AS FILED WITH THE SECURITIES AND EXCHANGE COMMISSION ON JULY 23, 2003

1933 ACT FILE NO. 333-105808

1940 ACT FILE NO. 811-21319


U.S. SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549

FORM N-2
(CHECK APPROPRIATE BOXES)

[ ]     REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933
[X]     PRE-EFFECTIVE AMENDMENT NO. 1
[ ]     POST-EFFECTIVE AMENDMENT NO.
                                                   AND/OR
[ ]     REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940
[X]     AMENDMENT NO. 4

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
Exact Name of Registrant as Specified in Charter

1111 East Warrenville Road, Naperville, Illinois 60563-1493
Address of Principal Executive Offices (Number, Street, City, State, ZIP Code)

(630) 245-7200
Registrant's Telephone Number, including Area Code

James S. Hamman, Jr.,
Secretary
Calamos Asset Management, Inc.
1111 East Warrenville Road
Naperville, Illinois 60563-1493

Name and Address (Number, Street, City, State, ZIP Code) of Agent for Service

COPIES OF COMMUNICATIONS TO:

       David A. Sturms                Cameron S. Avery                Cynthia G. Cobden
  Vedder, Price, Kaufman &         Bell, Boyd & Lloyd, LLC     Simpson Thacher & Bartlett LLP
       Kammholz, P.C.              70 West Madison Street,          425 Lexington Avenue
  222 North LaSalle Street               Suite 3300               New York, New York 10017
Chicago, Illinois 60601-1003    Chicago, Illinois 60602-4207

APPROXIMATE DATE OF PROPOSED PUBLIC OFFERING: As soon as practicable after
the effective date of this Registration Statement

If any of the securities being registered on this Form will be offered on a delayed or continuous basis in reliance on Rule 415 under the Securities Act of 1933, as amended (the "Securities Act"), other than securities offered in connection with a dividend or interest reinvestment plan, check the following box. [ ]

It is proposed that this filing will become effective (check appropriate box)

[ ] when declared effective pursuant to section 8(c).

CALCULATION OF REGISTRATION FEE UNDER THE SECURITIES ACT OF 1933

-------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------
                                                       PROPOSED MAXIMUM     PROPOSED MAXIMUM        AMOUNT OF
     TITLE OF SECURITIES            AMOUNT BEING        OFFERING PRICE         AGGREGATE           REGISTRATION
       BEING REGISTERED              REGISTERED            PER UNIT          OFFERING PRICE         FEE(1)(2)
-------------------------------------------------------------------------------------------------------------------
Preferred Shares (no par
  value)......................     17,200 shares           $25,000            $430,000,000           $34,787
-------------------------------------------------------------------------------------------------------------------
-------------------------------------------------------------------------------------------------------------------

(1) $80.90 has been previously paid.

(2) Transmitted prior to filing.
THE REGISTRANT HEREBY AMENDS THIS REGISTRATION STATEMENT ON SUCH DATE OR DATES AS MAY BE NECESSARY TO DELAY ITS EFFECTIVE DATE UNTIL THE REGISTRANT SHALL FILE A FURTHER AMENDMENT, WHICH SPECIFICALLY STATES THAT THIS REGISTRATION STATEMENT SHALL THEREAFTER BECOME EFFECTIVE IN ACCORDANCE WITH SECTION 8(a) OF THE SECURITIES ACT OR UNTIL THE REGISTRATION STATEMENT SHALL BECOME EFFECTIVE ON SUCH DATE AS THE COMMISSION, ACTING PURSUANT TO SAID SECTION 8(a), MAY DETERMINE.



THE INFORMATION IN THIS PROSPECTUS IS NOT COMPLETE AND MAY BE CHANGED. WE MAY NOT SELL THESE SECURITIES UNTIL THE REGISTRATION STATEMENT FILED WITH THE SECURITIES AND EXCHANGE COMMISSION IS EFFECTIVE. THIS PROSPECTUS IS NOT AN OFFER TO SELL THESE SECURITIES AND IS NOT SOLICITING AN OFFER TO BUY THESE SECURITIES IN ANY STATE WHERE THE OFFER OR SALE IS NOT PERMITTED.

SUBJECT TO COMPLETION, DATED JULY 22, 2003

PROSPECTUS

$430,000,000

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
PREFERRED SHARES

3,000 SHARES, SERIES M

3,000 SHARES, SERIES TU

3,000 SHARES, SERIES W

3,000 SHARES, SERIES TH

3,000 SHARES, SERIES F

2,200 SHARES, SERIES A

LIQUIDATION PREFERENCE $25,000 PER SHARE

Calamos Convertible and High Income Fund (the "Fund") is a recently organized, diversified, closed-end management investment company. The Fund's investment objective is to provide total return through a combination of capital appreciation and current income. Under normal circumstances, the Fund will invest at least 80% of its managed assets in a diversified portfolio of convertible securities and below investment grade (high yield/high risk) non- convertible debt securities. The portion of the Fund's assets invested in convertible securities and below investment grade (high yield/high risk) non-convertible debt securities will vary from time to time consistent with the Fund's investment objective, changes in equity prices and changes in interest rates and other economic and market factors, although, under normal circumstances, the Fund will invest at least 20% of its managed assets in convertible securities and at least 20% of its managed assets in below investment grade (high yield/high risk) non-convertible debt securities (so long as the combined total equals at least 80% of the Fund's managed assets). "Managed assets" means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). For this purpose, the liquidation preference on any preferred shares will not constitute a liability. Below investment grade (high yield/high risk) securities are rated Ba or lower by Moody's Investors Service, Inc. ("Moody's") or BB or lower by Standard & Poor's Corporation, a division of The McGraw-Hill Companies ("Standard & Poor's") or are unrated securities of comparable quality as determined by the Fund's investment adviser. Below investment grade securities are commonly referred to as "junk bonds" and are considered speculative with respect to the issuer's capacity to pay interest and repay principal. They involve greater risk of loss, are subject to greater price volatility and are less liquid, especially during periods of economic uncertainty or change, than higher rated securities. There can be no assurance that the Fund will achieve its investment objective.

INVESTING IN THE FUND'S PREFERRED SHARES INVOLVES RISKS THAT ARE DESCRIBED

IN "RISK FACTORS" BEGINNING ON PAGE 22 OF THIS PROSPECTUS.

Neither the Securities and Exchange Commission nor any State Securities Commission has approved or disapproved of these securities or determined if this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

                                                              PER SHARE           TOTAL
                                                              ---------           -----
Public Offering Price                                          $25,000
Sales Load
Proceeds, before expenses, to the Fund(1)

(1) Total expenses of issuance and distribution are estimated to be $ .

The underwriters are offering the Preferred Shares subject to various conditions. The underwriters expect to deliver Preferred Shares in book-entry form, through the facilities of The Depository Trust Company on or about , 2003.


CITIGROUP

RBC CAPITAL MARKETS

WACHOVIA SECURITIES


, 2003.

(continued from previous page)

This prospectus sets forth concisely the information about the Fund that a prospective investor ought to know before investing. You should read this prospectus, which contains important information about the Fund, before deciding whether to invest in the Preferred Shares and retain it for future reference. A statement of additional information, dated , 2003, containing additional information about the Fund, has been filed with the Securities and Exchange Commission and is incorporated by reference in its entirety into this prospectus. You may request a free copy of the statement of additional information, the table of contents of which is on page 53 of this prospectus, by calling 1-800-582-6959 or by writing to the Fund. You can review and copy documents the Fund has filed at the Securities and Exchange Commission's Public Reference Room in Washington, D.C. Call 1-202-942-8090 for information. The Commission charges a fee for copies. You can get the same information free from the Commission's EDGAR database on the Internet (http://www.sec.gov). You may also e-mail requests for these documents to publicinfo@sec.gov or make a request in writing to the Commission's Public Reference Section, Washington, D.C. 20549-0102.

The Fund is offering 3,000 shares of Series M Preferred Shares, 3,000 shares of Series TU Preferred Shares, 3,000 shares of Series W Preferred Shares, 3,000 shares of Series TH Preferred Shares, 3,000 shares of Series F Preferred Shares and 2,200 shares of Series A Preferred Shares. The shares are referred to in this prospectus as "Preferred Shares." The offering of the Preferred Shares represents the Fund's use of leverage. The Preferred Shares have a liquidation preference of $25,000 per share, plus any accumulated, unpaid dividends. The Preferred Shares also have priority over the Fund's common shares as to distribution of assets as described in this prospectus. It is a condition of closing this offering that the Preferred Shares be offered with a rating of "Aaa" from Moody's and "AAA" from Fitch Ratings ("Fitch").

The dividend rate for the initial dividend rate period will be % for Series M, % for Series TU, % for Series W, % for Series TH, % for Series F and % for Series A. The initial rate period is from the date of issuance through, , 2003 for Series M, , 2003 for Series TU, , 2003 for Series W, , 2003 for Series TH, , 2003 for Series F and , 2003 for Series A. Series M, TU, W, TH and F will have initial rate periods of , , , and days, respectively. Series A will have an initial rate period of days. For subsequent rate periods, Preferred Shares pay dividends based on a rate set at auction, usually held weekly in the case of Series M, TU, W, TH and F or every 28 days in the case of Series A. Dividends on the Preferred Shares will be cumulative. Prospective purchasers should carefully review the auction procedures described in this prospectus and should note: (1) a buy order (called a "bid order") or sell order is a commitment to buy or sell Preferred Shares based on the results of an auction; (2) auctions will be conducted by telephone; and (3) purchases and sales will be settled on the next business day after the auction.

The Preferred Shares are redeemable, in whole or in part, at the option of the Fund on the second business day prior to any date dividends are paid on the Preferred Shares, and will be subject to mandatory redemption in certain circumstances at a redemption price of $25,000 per share, plus accumulated, unpaid dividends to the date of redemption, plus a premium in certain circumstances. The Preferred Shares are not redeemable by the Fund's shareholders.

The Preferred Shares will not be listed on an exchange. You may only buy or sell Preferred Shares through an order placed at an auction with or through a broker-dealer that has entered into an agreement with the auction agent and the Trust or in a secondary market maintained by certain broker-dealers. These broker-dealers are not required to maintain this market, and it may not provide you with liquidity.

The Preferred Shares do not represent a deposit or obligation of, and are not guaranteed or endorsed by, any bank or other insured depository institution and are not federally insured by the Federal Deposit Insurance Corporation, the Federal Reserve Board or any other government agency.


YOU SHOULD RELY ONLY ON THE INFORMATION CONTAINED OR INCORPORATED BY REFERENCE IN THIS PROSPECTUS. WE HAVE NOT, AND THE UNDERWRITERS HAVE NOT, AUTHORIZED ANY OTHER PERSON TO PROVIDE YOU WITH DIFFERENT INFORMATION. IF ANYONE PROVIDES YOU WITH DIFFERENT OR INCONSISTENT INFORMATION, YOU SHOULD NOT RELY ON IT. WE ARE NOT, AND THE UNDERWRITERS ARE NOT, MAKING AN OFFER TO SELL THESE SECURITIES IN ANY JURISDICTION WHERE THE OFFER OR SALE IS NOT PERMITTED. YOU SHOULD ASSUME THAT THE INFORMATION APPEARING IN THIS PROSPECTUS IS ACCURATE ONLY AS OF THE DATE OF THIS PROSPECTUS.

TABLE OF CONTENTS

                                                              PAGE
                                                              ----
Prospectus Summary..........................................    1
Financial Highlights........................................   12
The Fund....................................................   13
Use of Proceeds.............................................   13
Capitalization..............................................   14
Portfolio Composition.......................................   14
The Fund's Investments......................................   15
Leverage....................................................   19
Interest Rate Transactions..................................   20
Risk Factors................................................   22
Management of the Fund......................................   29
Description of Preferred Shares.............................   32
The Auction.................................................   42
Description of Borrowings...................................   45
Description of Common Shares................................   46
U.S. Federal Income Tax Matters.............................   46
Certain Provisions of the Agreement and Declaration of Trust
  and By-Laws...............................................   49
Custodian, Auction Agent, Transfer Agent, Dividend Paying
  Agent and Registrar.......................................   50
Underwriting................................................   51
Legal Opinions..............................................   52
Available Information.......................................   52
Table of Contents for Statement of Additional Information...   53

i

PROSPECTUS SUMMARY

This is only a summary. This summary may not contain all of the information that you should consider before investing in the Fund's Preferred Shares. You should review the more detailed information contained in this prospectus and in the Statement of Additional Information, especially the information set forth under the heading "Risk Factors." Capitalized terms used but not defined in this prospectus shall have the meanings given to such terms in the Statement of Preferences of Preferred Shares, attached as Appendix A to the Statement of Additional Information.

THE FUND......................   Calamos Convertible and High Income Fund is a
                                 recently organized, diversified, closed-end
                                 management investment company. Throughout the

prospectus, we refer to Calamos Convertible and High Income Fund as the "Fund" or as "we," "us," or "our." See "The Fund." The Fund's common shares are traded on the New York Stock Exchange under the symbol "CHY." As of July 15, 2003, the Fund had 60,013,451 common shares outstanding and net assets of $868,309,715. The Fund's principal offices are located at 1111 East Warrenville Road, Naperville, Illinois 60563.

THE OFFERING..................   We are offering 3,000 Series M Preferred
                                 Shares, 3,000 Series TU Preferred Shares, 3,000
                                 Series W Preferred Shares, 3,000 Series TH
                                 Preferred Shares, 3,000 Series F Preferred
                                 Shares and 2,200 Series A Preferred Shares,
                                 each at a purchase price of $25,000 per share.
                                 The Preferred Shares are offered through a
                                 group of underwriters led by Citigroup Global
                                 Markets Inc., RBC Dain Rauscher Inc. and
                                 Wachovia Capital Markets, LLC.

The Preferred Shares entitle their holders to receive cash dividends at an annual rate that may vary for the successive dividend periods for the Preferred Shares. In general, except as described under "-- Dividends and Rate Periods" below and "Description of Preferred Shares -- Dividends and Rate Periods," the dividend period for the Series M, TU, W, TH and F Preferred Shares will each be seven days and for the Series A Preferred Shares the dividend period will be 28 days. The auction agent will determine the dividend rate for a particular period by an auction conducted on the business day immediately prior to the start of that rate period. See "The Auction."

Generally, investors in Preferred Shares will not receive certificates representing ownership of their shares. The securities depository (The Depository Trust Company or any successor) or its nominee for the account of the investor's broker-dealer will maintain record ownership of Preferred Shares in book-entry form. An investor's broker-dealer, in turn, will maintain records of that investor's beneficial ownership of Preferred Shares.

An investor should consider whether to invest in a particular series based on the series' rate of return, the investor's time horizon for investment, and the investor's liquidity preference. Investors can choose between six tranches. Normally, the Series M, TU, W, TH and F Preferred Shares will have a seven-day dividend period. Normally, the Series A Preferred Shares will have a 28-day dividend period. The Series A Preferred

1

Shares may be suited for investors with a longer investment time horizon.

INVESTMENT OBJECTIVE..........   The Fund's investment objective is to provide
                                 total return, through a combination of capital
                                 appreciation and current income. There can be
                                 no assurance that the Fund will achieve its
                                 investment objective. See "The Fund's
                                 Investments -- Investment Objective."

INVESTMENT POLICIES...........   Primary Investments.  Under normal
                                 circumstances, the Fund will invest at least
                                 80% of its managed assets in a diversified
                                 portfolio of convertible securities and below
                                 investment grade (high yield/high risk)
                                 non-convertible debt securities. The portion of
                                 the Fund's assets invested in convertible
                                 securities and below investment grade (high
                                 yield/high risk) non-convertible debt
                                 securities will vary from time to time
                                 consistent with the Fund's investment
                                 objective, changes in equity prices and changes
                                 in interest rates and other economic and market
                                 factors, although, under normal circumstances,
                                 the Fund will invest at least 20% of its
                                 managed assets in convertible securities and at
                                 least 20% of its managed assets in below
                                 investment grade (high yield/high risk)
                                 non-convertible debt securities (so long as the
                                 combined total equals at least 80% of the
                                 Fund's managed assets). The Fund invests in
                                 securities with a broad range of maturities.
                                 The average term to maturity of the Fund's
                                 securities typically will range from five to
                                 ten years. See "The Fund's
                                 Investment -- Principal Investment Strategies."

                                 Convertible Securities.  Investment in
                                 convertible securities forms an important part
                                 of the Fund's investment strategies. Under
                                 normal circumstances, the Fund will invest at
                                 least 20% of its managed assets in convertible
                                 securities. A convertible security is a debt
                                 security or preferred stock that is
                                 exchangeable for an equity security of the
                                 issuer at a predetermined price (the
                                 "conversion price"). Depending upon the
                                 relationship of the conversion price to the
                                 market value of the underlying security, a
                                 convertible security may trade more like an
                                 equity security than a debt instrument. The
                                 Fund may invest in convertible securities of
                                 any rating. See "The Fund's
                                 Investments -- Principal Investment
                                 Strategies -- Convertible Securities."

                                 Synthetic Convertible Securities.  Calamos
                                 Asset Management, Inc. ("Calamos"), the Fund's
                                 investment adviser, may also create a
                                 "synthetic" convertible security by combining
                                 separate securities that possess the two
                                 principal characteristics of a true convertible
                                 security, i.e., a fixed-income security
                                 ("fixed-income component") and the right to
                                 acquire an equity security ("convertible
                                 component"). The fixed-income component is
                                 achieved by investing in non-convertible,
                                 fixed-income securities such as bonds,
                                 preferred stocks and money market instruments.
                                 The convertible component is achieved by
                                 investing in warrants or options to buy common
                                 stock at a certain exercise price, or options
                                 on a stock index. The Fund may also purchase
                                 synthetic securities created by other parties,
                                 typically investment banks, including
                                 convertible structured notes. Different
                                 companies may

                                        2

                                 issue the fixed-income and convertible
                                 components which may be purchased separately,
                                 and at different times. The Fund's holdings of
                                 synthetic convertible securities are considered
                                 convertible securities for purposes of the
                                 Fund's policy to invest at least 20% of its
                                 managed assets in convertible securities and
                                 80% of its managed assets in a diversified
                                 portfolio of convertible securities and below
                                 investment grade (high yield/high risk)
                                 non-convertible debt securities. See "The
                                 Fund's Investments -- Principal Investment
                                 Strategies -- Synthetic Convertible
                                 Securities."

                                 High Yield Securities.  Investment in high
                                 yield securities forms an important part of the
                                 Fund's investment strategies. The Fund will
                                 invest in high yield securities for either
                                 current income or capital appreciation or both.
                                 Under normal circumstances, the Fund will
                                 invest at least 20% of its managed assets in
                                 high yield non-convertible debt securities.
                                 These securities are rated Ba or lower by
                                 Moody's or BB or lower by Standard & Poor's or
                                 are unrated securities of comparable quality as
                                 determined by Calamos, the Fund's investment
                                 adviser. The Fund may invest in high yield
                                 securities of any rating. The Fund may, but
                                 currently does not intend to, invest up to 5%
                                 of its total assets in distressed securities
                                 that are in default or the issuers of which are
                                 in bankruptcy. Non-convertible debt securities
                                 rated below investment grade are commonly
                                 referred to as "junk bonds" and are considered
                                 speculative with respect to the issuer's
                                 capacity to pay interest and repay principal.
                                 They involve greater risk of loss, are subject
                                 to greater price volatility and are less
                                 liquid, especially during periods of economic
                                 uncertainty or change, than higher rated
                                 securities. See "The Fund's
                                 Investments -- Principal Investment
                                 Strategies -- High Yield Securities."

                                 Foreign Issuers.  Although the Fund primarily
                                 invests in securities of U.S. issuers, the Fund
                                 may invest up to 25% of its managed assets in
                                 securities of foreign issuers, including debt
                                 and equity securities of corporate issuers and
                                 debt securities of government issuers in
                                 developed and emerging markets. The Fund may
                                 invest up to 15% of its managed assets in
                                 securities of foreign issuers in emerging
                                 markets. A foreign issuer is a company
                                 organized under the laws of a foreign country
                                 that is principally traded in the financial
                                 markets of a foreign country. For purposes of
                                 these percentage limitations, foreign
                                 securities do not include securities
                                 represented by American Depository Receipts
                                 ("ADRs") or securities guaranteed by a U.S.
                                 person. See "The Fund's
                                 Investments -- Principal Investment
                                 Strategies -- Foreign Securities."

                                 Rule 144A Securities.  The Fund may invest
                                 without limit in securities that have not been
                                 registered for public sale, but that are
                                 eligible for purchase and sale by certain
                                 qualified institutional buyers ("Rule 144A
                                 Securities"). Calamos, under the supervision of
                                 the Board of Trustees, will determine whether
                                 securities purchased under Rule 144A are
                                 illiquid (that is, not readily marketable) and
                                 thus subject to the Fund's limit on

                                        3

                                 investing no more than 15% of its managed
                                 assets in illiquid securities. See "The Fund's
                                 Investments -- Principal Investment
                                 Strategies -- Rule 144A Securities."

                                 Other Securities.  The Fund may invest in other
                                 securities of various types. Normally, the Fund
                                 invests substantially all of its assets to meet
                                 its investment objective. For temporary
                                 defensive purposes, the Fund may depart from
                                 its principal investment strategies and invest
                                 part or all of its assets in securities with
                                 remaining maturities of less than one year,
                                 cash equivalents, or may hold cash. During such
                                 periods, the Fund may not be able to achieve
                                 its investment objective. See "The Fund's
                                 Investments -- Principal Investment
                                 Strategies."


USE OF LEVERAGE BY THE FUND...   The Fund may, but is not required to, use
                                 financial leverage for investment purposes. In
                                 addition to issuing Preferred Shares, the Fund
                                 may borrow money or issue debt securities such
                                 as commercial paper or notes. Throughout the
                                 prospectus, borrowing money and issuing debt
                                 securities sometimes may be collectively
                                 referred to as "Borrowings." Any Borrowings
                                 will have seniority over Preferred Shares and
                                 payments to holders of Preferred Shares in
                                 liquidation or otherwise will be subject to the
                                 prior payment of any Borrowings. As a
                                 non-fundamental policy, financial leverage (the
                                 total of Preferred Shares or other preferred
                                 shares and any Borrowings) may not exceed 38%
                                 of the Fund's total assets. Since Calamos's fee
                                 is based upon a percentage of the Fund's
                                 managed assets, which include assets
                                 attributable to any outstanding leverage, the
                                 investment management fee will be higher if the
                                 Fund is leveraged and Calamos will have an
                                 incentive to be more aggressive and leverage
                                 the Fund. Calamos intends only to leverage the
                                 Fund when it believes that the potential return
                                 on such additional investments is likely to
                                 exceed the costs incurred in connection with
                                 the borrowing. See "Leverage."


INTEREST RATE TRANSACTIONS....   In connection with the Fund's use of leverage
                                 through the sale of Preferred Shares or
                                 Borrowings, the Fund, if market conditions are
                                 deemed favorable, likely will enter into
                                 interest rate swap or cap transactions to
                                 attempt to protect itself from increasing
                                 dividend or interest expenses on its leverage.
                                 The use of interest rate swaps and caps is a
                                 highly specialized activity that involves
                                 investment techniques and risks different from
                                 those associated with ordinary portfolio
                                 security transactions.

                                 In an interest rate swap, the Fund would agree
                                 to pay to the other party to the interest rate
                                 swap (which is known as the "counterparty") a
                                 fixed rate payment in exchange for the
                                 counterparty agreeing to pay to the Fund a
                                 variable rate payment obligation on Preferred
                                 Shares or any variable rate Borrowings. The
                                 payment obligations would be based on the
                                 notional amount of the swap. The Fund's payment
                                 obligations under the swap are general
                                 unsecured obligations of the Fund and are
                                 ranked senior to distributions under the common
                                 shares and the Preferred Shares.

                                        4

                                 In an interest rate cap, the Fund would pay a
                                 premium to the counterparty to the interest
                                 rate cap and, to the extent that a specified
                                 variable rate index exceeds a predetermined
                                 fixed rate, would receive from the counterparty
                                 payments of the difference based on the
                                 notional amount of such cap. If the
                                 counterparty to an interest rate swap or cap
                                 defaults, the Fund would be obligated to make
                                 the payments that it had intended to avoid.
                                 Depending on the state of interest rates in
                                 general, this default could negatively impact
                                 the Fund's ability to make dividend payments on
                                 the Preferred Shares.

                                 In addition, at the time an interest rate swap
                                 or cap transaction reaches its scheduled
                                 termination date, there is a risk that the Fund
                                 would not be able to obtain a replacement
                                 transaction or that the terms of the
                                 replacement would not be as favorable as on the
                                 expiring transaction. If this occurs, it could
                                 have a negative impact on the Fund's ability to
                                 make dividend payments on the Preferred Shares
                                 or interest payments on Borrowings. If the Fund
                                 fails to meet an asset coverage ratio required
                                 by law or if the Fund does not meet a rating
                                 agency guideline in a timely manner, the Fund
                                 may be required to redeem some or all of the
                                 Preferred Shares. See "Redemption" below.
                                 Similarly, the Fund could be required to prepay
                                 the principal amount of Borrowings, if any.
                                 Such redemption or prepayment would likely
                                 result in the Fund seeking to terminate early
                                 all or a portion of any swap or cap
                                 transaction. Early termination of a swap could
                                 result in a termination payment by or to the
                                 Fund. A termination payment by the Fund would
                                 result in a reduction in common share net
                                 earnings. Early termination of a cap could
                                 result in a termination payment to the Fund.
                                 The Fund intends to maintain in a segregated
                                 account with its custodian, cash or liquid
                                 securities having a value at least equal to the
                                 Fund's net payment obligations under any swap
                                 transaction, marked to market daily. Under
                                 certain circumstances, the Fund may be required
                                 to pledge the assets in such segregated account
                                 to the counter-party. The Fund will not enter
                                 into interest rate swap or cap transactions
                                 having a notional amount that exceeds the
                                 outstanding amount of the Fund's leverage. See
                                 "Interest Rate Transactions" for additional
                                 information.


INVESTMENT ADVISER............   Calamos Asset Management, Inc. ("Calamos") is
                                 the Fund's investment adviser. Calamos is
                                 responsible on a day-to-day basis for
                                 investment of the Fund's portfolio in
                                 accordance with its investment objective and
                                 policies. Calamos makes all investment
                                 decisions for the Fund and places purchase and
                                 sale orders for the Fund's portfolio
                                 securities. As of June 30, 2003, Calamos
                                 managed approximately $17.8 billion in assets
                                 of individuals and institutions. Calamos is a
                                 wholly-owned subsidiary of Calamos Holdings,
                                 Inc. ("Holdings"). Holdings is controlled by
                                 John P. Calamos, who has been engaged in the
                                 investment advisory business since 1977.


PORTFOLIO MANAGER.............   John P. Calamos and Nick P. Calamos are
                                 responsible for managing the portfolio of the
                                 Fund. During the past five years,

                                        5

                                 John P. Calamos has been president of Calamos
                                 and Calamos Financial Services, Inc. ("CFS"),
                                 an affiliate of Calamos, and Nick P. Calamos
                                 has been senior executive vice president of
                                 Calamos and CFS.

FUND ACCOUNTANT...............   U.S. Bancorp Fund Services, LLC, will provide
                                 fund accounting and financial accounting
                                 services to the Fund.


RISK FACTORS..................   Risk is inherent in all investing. Therefore,
                                 before investing in the Preferred Shares you
                                 should consider certain risks carefully. The
                                 primary risks of investing in the Preferred
                                 Shares are:


                                 - the Fund will not be permitted to declare
                                   dividends or other distributions with respect
                                   to your Preferred Shares or redeem your
                                   Preferred Shares unless the Fund meets
                                   certain asset coverage requirements;


                                 - if you try to sell your Preferred Shares
                                   between auctions you may not be able to sell
                                   any or all of your shares or you may not be
                                   able to sell them for $25,000 per share or
                                   $25,000 per share plus accumulated dividends.
                                   If the Fund has designated a special rate
                                   period, changes in interest rates could
                                   affect the price you would receive if you
                                   sold your shares in the secondary market. You
                                   may transfer shares outside of auction only
                                   to or through a broker-dealer that has
                                   entered into an agreement with the auction
                                   agent and the Fund or other person as the
                                   Fund permits;


                                 - if an auction fails you may not be able to
                                   sell some or all of your shares;

                                 - because of the nature of the market for
                                   Preferred Shares, you may receive less than
                                   the price you paid for your shares if you
                                   sell them outside of the auction, especially
                                   when market interest rates are rising;

                                 - a rating agency could downgrade the rating
                                   assigned to the Preferred Shares, which could
                                   affect liquidity;

                                 - the Fund may be forced to redeem your shares
                                   at a time when it is not advantageous to meet
                                   regulatory or rating agency requirements or
                                   may voluntarily redeem your shares in certain
                                   circumstances;

                                 - in certain circumstances, the Fund may not
                                   earn sufficient income from its investments
                                   to pay dividends;

                                 - the Preferred Shares will be junior to any
                                   Borrowings;

                                 - any Borrowing may constitute a substantial
                                   lien and burden on the Preferred Shares by
                                   reason of its priority claim against the
                                   income of the Fund and against the net assets
                                   of the Fund in liquidation;

                                 - if the Fund leverages through Borrowings, the
                                   Fund may not be permitted to declare
                                   dividends or other distributions with respect
                                   to the Preferred Shares or purchase Preferred
                                   Shares unless at the time thereof the Fund
                                   meets certain asset

                                        6

                                   coverage requirements and the payments of
                                   principal and of interest on any such
                                   Borrowings are not in default.


                                 - the value of the Fund's investment portfolio
                                   may decline, particularly during a rising
                                   interest rate environment, reducing the asset
                                   coverage for the Preferred Shares. Market
                                   interest rates currently are at historical
                                   lows.


                                 - certain events, such as terrorist attacks
                                   (including the terrorist attacks in the
                                   United States on September 11, 2001), war and
                                   other geopolitical events have led to
                                   increased short-term market volatility and
                                   may have long-term effects on U.S. and world
                                   economies and markets. The Fund cannot
                                   predict the effects of similar events in the
                                   future on the U.S. economy. Similar
                                   disruptions of the financial markets could
                                   impact interest rates, auctions, secondary
                                   trading, ratings, credit risk, inflation and
                                   other factors relating to securities or other
                                   financial interests.

                                 For additional information about the risks of
                                 investing in Preferred Shares and in the Fund,

see "Risk Factors."

In addition to the risks associated with investing in the Preferred Shares, an investor in the Preferred Shares will also be subject to the general risks associated with the Fund's investment policy, including the risks associated with convertible securities, synthetic convertible securities, high yield securities, illiquid investments, foreign securities and interest rate transactions. These risks are described in more detail in "General Risks of Investing in the Fund."

TRADING MARKET................   The Preferred Shares will not be listed on an
                                 exchange. Instead, you may buy or sell the
                                 Preferred Shares at an auction that normally is
                                 held every seven days for the Series M, TU, W,
                                 TH and F and every 28 days for the Series A by
                                 submitting orders to a broker-dealer that has
                                 entered into an agreement with the auction
                                 agent and the Trust (a "Broker-Dealer"), or to
                                 a broker-dealer that has entered into a
                                 separate agreement with a Broker-Dealer. In
                                 addition to the auctions, Broker-Dealers and
                                 other broker-dealers may maintain a secondary
                                 trading market in Preferred Shares outside of
                                 auctions, but may discontinue this activity at
                                 any time. There is no assurance that a
                                 secondary market will be created or, if
                                 created, that it will provide shareholders with
                                 liquidity or that the trading price in any
                                 secondary market would be $25,000. You may
                                 transfer shares outside of auctions only to or
                                 through a Broker-Dealer or a broker-dealer that
                                 has entered into a separate agreement with a
                                 Broker-Dealer.


                                 The table below shows the first auction date
                                 for each series of Preferred Shares and the day
                                 of the week on which each subsequent auction,
                                 if any, will normally be held for each series
                                 of Preferred Shares. The first auction date for
                                 each series of Preferred Shares will be the
                                 business day before the dividend payment date
                                 for the initial rate period for that series of
                                 Preferred Shares. The start date for subsequent
                                 rate periods will

                                        7

                                 normally be the business day following the
                                 auction date unless the then-current rate
                                 period is a special rate period or the first
                                 day of the subsequent rate period is not a
                                 business day.

                         FIRST AUCTION            SUBSEQUENT
SERIES                       DATE                AUCTION DAY
------                   -------------      ----------------------
M....................                               Monday
TU...................                              Tuesday
W....................                             Wednesday
TH...................                              Thursday
F....................                               Friday
A....................                       every fourth Wednesday

DIVIDENDS AND RATE PERIODS....   The table below shows the initial dividend
                                 rates, the dividend payment dates and the day
                                 of the week upon which subsequent dividends, if
                                 any, will be paid for each series and number of
                                 days for the initial rate periods on each
                                 series of Preferred Shares offered in this
                                 prospectus. For subsequent rate periods, each
                                 series of Preferred Shares will pay dividends
                                 based on a rate set at auctions, normally held
                                 every seven days in the case of Series M, TU,
                                 W, TH and F and every 28 days in the case of
                                 Series A. In most instances, dividends are
                                 payable on the first business day following the
                                 end of the rate period. The rate set at auction
                                 will not exceed the maximum applicable rate.

See "Description of Preferred Shares -- Dividends and Rate Periods."

                                                   DIVIDEND                   NUMBER OF
                                    DATE OF        PAYMENT                     DAYS OF
                       INITIAL    ACCUMULATION     DATE FOR      SUBSEQUENT    INITIAL
                       DIVIDEND    AT INITIAL    INITIAL RATE     DIVIDEND      RATE
SERIES                   RATE         RATE          PERIOD      PAYMENT DAY    PERIOD
------                 --------   ------------   ------------   ------------  ---------
M....................                                             Tuesday
TU...................                                            Wednesday
W....................                                             Thursday
TH...................                                              Friday
F....................                                              Monday
A....................                                           every fourth
                                                                  Thursday

Dividends on the Preferred Shares will be cumulative from the date the shares are first issued and will be paid out of legally available funds.

The Fund may, subject to certain conditions, designate special rate periods of more than seven or 28 days. A requested special rate period will not be effective unless sufficient clearing bids were made in the auction immediately preceding the special rate period. In addition, full cumulative dividends, any amounts due with respect to mandatory redemptions and any additional dividends payable prior to such date must be paid in full. The dividend payment date for special rate periods will be set out in the notice designating a special rate period. See "Description of Preferred Shares -- Dividends and Rate Periods -- Designation of Special Rate Periods" and "The Auction."

RATINGS.......................   The Fund will issue Preferred Shares only if
                                 such shares have received a credit quality
                                 rating of "AAA" from Fitch and "Aaa"

8

from Moody's. These ratings are an assessment of the capacity and willingness of an issuer to pay preferred stock obligations. The ratings are not a recommendation to purchase, hold or sell those shares inasmuch as the ratings do not comment as to market price or suitability for a particular investor. The ratings described above also do not address the likelihood that an owner of Preferred Shares will be able to sell such shares in an auction or otherwise. The ratings are based on current information furnished to Fitch and Moody's by the Fund and Calamos and information obtained from other sources. The ratings may be changed, suspended or withdrawn in the rating agencies' discretion as a result of changes in, or the unavailability of, such information. See "Description of Preferred Shares -- Rating Agency Guidelines."

ASSET MAINTENANCE.............   Under the Fund's Statement of Preferences for
                                 Preferred Shares (the "Statement"), which
                                 establishes and fixes the rights and
                                 preferences of the shares of each series of
                                 Preferred Shares, the Fund must maintain:

                                 - asset coverage of the Preferred Shares as
                                   required by the rating agency or agencies
                                   rating the Preferred Shares, and

                                 - asset coverage of at least 200% with respect
                                   to senior securities that are stock,
                                   including the Preferred Shares.

                                 In the event that the Fund does not maintain or
                                 cure these coverage tests, some or all of the
                                 Preferred Shares will be subject to mandatory
                                 redemption. See "Description of Preferred
                                 Shares -- Redemption."


                                 Based on the composition of the Fund's
                                 portfolio as of July 15, 2003, the asset
                                 coverage of the Preferred Shares as measured
                                 pursuant to the 1940 Act would be approximately
                                 301% if the Fund were to issue all of the
                                 Preferred Shares offered in this Prospectus,
                                 representing approximately 33% of the Fund's
                                 managed assets.

RESTRICTIONS ON DIVIDENDS,
REDEMPTION AND OTHER

  PAYMENTS....................   If the Fund issues any Borrowings that
                                 constitute senior securities representing
                                 indebtedness (as defined in the 1940 Act),
                                 under the 1940 Act, the Fund would not be
                                 permitted to declare any dividend on Preferred
                                 Shares unless, after giving effect to such
                                 dividend, asset coverage with respect to the
                                 Fund's Borrowings that constitute senior
                                 securities representing indebtedness, if any,
                                 is at least 200%. In addition, the Fund would
                                 not be permitted to declare any distribution on
                                 or purchase or redeem Preferred Shares unless,
                                 after giving effect to such distribution,
                                 purchase or redemption, asset coverage with
                                 respect to the Fund's Borrowings that
                                 constitute senior securities representing
                                 indebtedness, if any, is at least 300%.
                                 Dividends or other distributions on or
                                 redemptions or purchases of Preferred Shares
                                 may also be prohibited (i) at any time when an
                                 event of default under any Borrowings has
                                 occurred and is continuing; or (ii) after
                                 giving effect to such declaration, the Fund
                                 would not have eligible portfolio holdings with
                                 an aggregated discounted

                                        9

                                 value at least equal to any asset coverage
                                 requirements associated with such Borrowings;
                                 or (iii) the Fund has not redeemed the full
                                 amount of Borrowings, if any, required to be
                                 redeemed by any provision for mandatory
                                 redemption. See "Description of Preferred
                                 Shares -- Restrictions on Dividend, Redemption
                                 and Other Payments."

REDEMPTION....................   The Fund may be required to redeem shares if,
                                 for example, the Fund does not meet an asset
                                 coverage ratio required by law or to correct a
                                 failure to meet a rating agency guideline in a
                                 timely manner. The Fund voluntarily may redeem
                                 Preferred Shares under certain conditions. See
                                 "Description of Preferred Shares -- Redemption"
                                 and "Description of Preferred Shares -- Rating
                                 Agency Guidelines."

LIQUIDATION PREFERENCE........   The liquidation preference for shares of each
                                 series of Preferred Shares will be $25,000 per
                                 share plus accumulated but unpaid dividends, if
                                 any, whether or not declared. See "Description
                                 of Preferred Shares -- Liquidation."


VOTING RIGHTS.................   Except as otherwise indicated, holders of
                                 Preferred Shares have one vote per share. The
                                 holders of preferred shares, including
                                 Preferred Shares, voting as a separate class,
                                 have the right to elect at least two trustees
                                 of the Fund at all times. The Board of Trustees
                                 will determine to which class or classes the
                                 trustees elected by the holders of Preferred
                                 Shares will be assigned, and the holders of the
                                 Preferred Shares will only be entitled to elect
                                 the trustees so designated as being elected by
                                 the holders of the Preferred Shares, when their
                                 term will have expired and such trustees
                                 appointed by the holders of Preferred Shares
                                 will be allocated as evenly as possible among
                                 the classes of trustees. Holders of Preferred
                                 Shares also have the right to elect a majority
                                 of the trustees in the event that two years'
                                 dividends on the preferred shares are unpaid.
                                 In each case, the remaining trustees will be
                                 elected by holders of common shares and
                                 preferred shares, including Preferred Shares,
                                 voting together as a single class. The holders
                                 of preferred shares, including Preferred
                                 Shares, will vote as a separate class or
                                 classes on certain other matters as required
                                 under the Fund's Agreement and Declaration of
                                 Trust, the Investment Company Act of 1940 (the
                                 "Investment Company Act") and Delaware law. See
                                 "Description of Preferred Shares -- Voting
                                 Rights," and "Certain Provisions in the
                                 Agreement and Declaration of Trust and By-
                                 Laws."



FEDERAL INCOME TAXES..........   Distributions with respect to the Preferred
                                 Shares will generally be subject to U.S.
                                 federal income taxation. In addition, because
                                 of the Fund's anticipated portfolio holdings,
                                 corporate investors in the Preferred Shares
                                 should not anticipate that the Fund's
                                 distributions will qualify for the corporate
                                 dividends received deduction. The Internal
                                 Revenue Service ("IRS") currently requires that
                                 a regulated investment company, which has two
                                 or more classes of stock, allocate to each such
                                 class proportionate amounts of each type of its
                                 income (such as ordinary income and capital
                                 gain) based upon the percentage of total
                                 dividends distributed to each class for the tax
                                 year. Accordingly, the Fund

10

intends each year to allocate ordinary income dividends and capital gain dividends between its common shares and the Preferred Shares in proportion to the total dividends paid to each class during or with respect to such year. See "U.S. Federal Income Tax Matters."

CUSTODIAN, AUCTION AGENT,
TRANSFER AGENT, DIVIDEND
PAYING AGENT AND

REGISTRAR...................   The Bank of New York serves as custodian of the
                               Fund's securities and cash. The Bank of New
                               York also serves as auction agent with respect
                               to the Preferred Shares, and transfer agent,
                               dividend paying agent and registrar for the
                               Fund's common shares and Preferred Shares.

11

FINANCIAL HIGHLIGHTS
(UNAUDITED)

Information contained in the table below shows the unaudited operating performance of the Fund from the commencement of the Fund's investment operations on May 27, 2003 through June 20, 2003. Since the Fund was recently organized and commenced investment operations on May 27, 2003, the table covers approximately one month of operations, during which a substantial portion of the Fund's portfolio was held in temporary investments pending investment in securities that meet the Fund's investment objectives and policies. Accordingly, the information presented may not provide a meaningful picture of the Fund's future operating performance.

                                                              FOR THE PERIOD
                                                               MAY 27, 2003
                                                                 THROUGH
                                                              JUNE 20, 2003
                                                              --------------
PER COMMON SHARE OPERATING PERFORMANCE:
Net asset value, beginning of period........................     $  14.32(a)
                                                                 --------
Offering costs..............................................         (.02)
Income from investment operations:
  Net investment income(b)..................................         0.01
  Net realized and unrealized gain (loss) on investments and
     foreign currency transactions..........................         0.14
                                                                 --------
Total from investment operations                                     0.15
                                                                 --------
Net asset value, end of period..............................     $  14.45
                                                                 ========
Market value, end of period.................................     $  15.50
TOTAL INVESTMENT RETURN BASED ON(C):
  Net asset value...........................................         1.05%
  Market Value..............................................         3.33%
RATIO TO AVERAGE NET ASSETS APPLICABLE TO COMMON
  SHAREHOLDERS/SUPPLEMENTARY DATA:
Net assets applicable to common shareholders, end of period
  (000's omitted)...........................................     $812,230
Ratio of net expenses to average net assets(d)..............         0.79%
Ratio of net investment income to average net assets(d).....         1.51%
Ratio of gross expenses to average net assets prior to
  waiver of expense by the advisor(d).......................         0.89%
Portfolio turnover rate(d)..................................         4.59%


(a) Net of sales load of $0.68 per share.

(b) Based on average shares outstanding.

(c) Total investment return is calculated assuming a purchase of common stock on the opening of the first day and a sale on the closing of the last day of the period reported. Dividends and distributions are assumed, for purposes of this calculation, to be reinvested at prices obtained under the Fund's dividend reinvestment plan. Total return is not annualized for periods less than one year. Brokerage commissions are not reflected.

(d) Annualized.

The information above represents the unaudited operating performance per outstanding common share, total investment return, ratios to average net assets and other supplemental data for the periods indicated. This information has been determined based upon financial information provided in the financial statements and market value data for the Fund's common shares.

12

THE FUND

Calamos Convertible and High Income Fund is a recently organized, diversified, closed-end management investment company. The Fund was organized under the laws of the state of Delaware on March 12, 2003, and has registered under the 1940 Act. On May 27, 2003, the Fund issued an aggregate of 52,200,000 common shares of beneficial interest, no par value, pursuant to the initial public offering and commenced its investment operations. On June 11, 2003 and July 15, 2003, the Fund issued an aggregate of 4,000,000 and 3,800,000 common shares, respectively, in connection with the exercise by the underwriters of the over-allotment option. The Fund's common shares are traded on the New York Stock Exchange under the symbol "CHY." The Fund's principal office is located at 1111 East Warrenville Road, Naperville, Illinois 60563-1493, and its telephone number is 1-800-582-6959.

The following provides information about the Fund's authorized and outstanding shares as of July 15, 2003.

                                              AMOUNT       AMOUNT HELD BY THE        AMOUNT
TITLE OF CLASS                              AUTHORIZED   FUND OR FOR ITS ACCOUNT   OUTSTANDING
--------------                              ----------   -----------------------   -----------
Common....................................  Unlimited               0              60,013,451
Preferred.................................  Unlimited               0                       0
Series M..................................      3,000               0                       0
Series TU.................................      3,000               0                       0
Series W..................................      3,000               0                       0
Series TH.................................      3,000               0                       0
Series F..................................      3,000               0                       0
Series A..................................      2,200               0                       0

USE OF PROCEEDS

The Fund estimates the net proceeds of the offering of Preferred Shares after payment of sales load and offering expenses, will be $425,296,000. The Fund will invest the net proceeds of the offering in accordance with the Fund's investment objective and policies as stated below. It is presently anticipated that the Fund will be able to invest substantially all of the net proceeds in securities that meet these investment objectives and policies within 3 months after completion of this offering. Pending such investment, the Fund anticipates that all or a portion of the proceeds will be invested in U.S. government securities or high grade, short-term money market instruments. If necessary, the Fund may also purchase, as temporary investments, securities of other open- or closed-end investment companies that invest primarily in the types of securities in which the Fund may invest directly. See "The Fund's Investments."

13

CAPITALIZATION
(UNAUDITED)

The following table sets forth the capitalization of the Fund as of July 15, 2003, and as adjusted, to give effect to the issuance of all the Preferred Shares offered hereby (including estimated offering expenses and sales load of $4,704,000).

                                                              ACTUAL      AS ADJUSTED
                                                           ------------   ------------
Preferred Shares, no par value per share, $25,000 stated
  value per share, at liquidation value; unlimited shares
  authorized (no shares issued and 17,200 shares issued
  as adjusted, respectively).............................  $         --   $430,000,000
                                                           ============   ============
COMMON SHAREHOLDERS' EQUITY:
  Common shares, no par value per share; unlimited shares
     authorized, 60,013,451 shares outstanding*..........  $858,408,511   $853,704,511
  Undistributed net investment income....................     4,073,796      4,073,796
  Accumulated net realized gain (loss) from
     investments.........................................      (209,375)      (209,375)
  Net unrealized appreciation (depreciation) of
     investments.........................................     6,036,783      6,036,783
                                                           ------------   ------------
  Net assets applicable to common shares.................  $868,309,715   $863,605,715
                                                           ============   ============


* None of these outstanding shares are held by or for the account of the Fund.

PORTFOLIO COMPOSITION

As of July 15, 2003, approximately 83.5% of the market value of the Fund's portfolio was invested in convertible securities and high yield debt securities and approximately 16.5% of the market value of the Fund's portfolio was invested in short-term investment grade debt securities. The following table sets forth certain information with respect to the composition of the Fund's investment portfolio as of July 15, 2003, based on the highest rating assigned each investment by either Moody's or S&P.

                                                               VALUE
CREDIT RATING                                                  (000)     PERCENT
-------------                                                 --------   -------
Aaa/AAA.....................................................        --     0.0%
Aa/AA.......................................................        --     0.0%
A/A.........................................................  $ 50,340     5.8%
Baa/BBB.....................................................    23,897     2.8%
Ba/BB.......................................................   188,609    21.8%
B/B.........................................................   413,187    47.8%
Caa/CCC.....................................................     6,650     0.8%
Unrated+....................................................    39,312     4.5%
Short-Term..................................................   142,892    16.5%
                                                              --------   ------
  Total.....................................................  $864,887   100.0%
                                                              ========   ======


+ Refers to securities that have not been rated by Moody's or S&P.

14

THE FUND'S INVESTMENTS

INVESTMENT OBJECTIVE

The Fund's investment objective is to provide total return, through a combination of capital appreciation and current income. The Fund's investment objective may be changed by the Board of Trustees without a shareholder vote. The Fund makes no assurance that it will realize its objective. An investment in the Fund may be speculative in that it involves a high degree of risk and should not constitute a complete investment program. See "Risk Factors."

PRINCIPAL INVESTMENT STRATEGIES

Under normal circumstances, the Fund will invest at least 80% of its managed assets in a diversified portfolio of convertible securities and below investment grade (high yield/high risk) non-convertible debt securities. This is a non-fundamental policy and may be changed by the Board of Trustees of the Fund provided that shareholders are provided with at least 60 days' prior written notice of any change as required by the rules under the 1940 Act. The portion of the Fund's assets invested in convertible securities and below investment grade (high yield/high risk) non-convertible debt securities will vary from time to time consistent with the Fund's investment objective, changes in equity prices and changes in interest rates and other economic and market factors, although, under normal circumstances, the Fund will invest at least 20% of its managed assets in convertible securities and at least 20% of its managed assets in below investment grade (high yield/high risk) non-convertible debt securities (so long as the combined total equals at least 80% of the Fund's managed assets). The Fund invests in securities with a broad range of maturities. The average term to maturity of the Fund's securities typically will range from five to ten years.

We start from a universe of primarily convertible and high yield non-convertible debt securities, and perform fundamental research to assess credit. We filter out securities with high probability of bankruptcy, declining credits, or distressed credits. We also screen issues based on equity characteristics of the security, such as intrinsic/economic business value, cash flow generation, and sufficient access to capital. We then ensure there is sufficient return potential, and assess relative risk/reward. Finally, we perform top-down portfolio construction by actively managing the security mix, overlay macro/industry themes, and diversify by sector and industry.

CONVERTIBLE SECURITIES. Investment in convertible securities forms an important part of the Fund's investment strategies. Under normal circumstances, the Fund will invest at least 20% of its managed assets in convertible securities. A convertible security is a debt security or preferred stock that is exchangeable for an equity security of the issuer at a predetermined price. Depending upon the relationship of the conversion price to the market value of the underlying security, a convertible security may trade more like an equity security than a debt instrument. The Fund may invest in convertible securities of any rating.

SYNTHETIC CONVERTIBLE SECURITIES. Calamos may also create a "synthetic" convertible security by combining separate securities that possess the two principal characteristics of a true convertible security, i.e., a fixed-income security ("fixed-income component") and the right to acquire an equity security ("convertible component"). The fixed-income component is achieved by investing in non-convertible, fixed-income securities such as bonds, preferred stocks and money market instruments. The convertible component is achieved by investing in warrants or options to buy common stock at a certain exercise price, or options on a stock index. Different companies may issue the fixed-income and convertible components, which may be purchased separately and at different times. The Fund may also purchase synthetic securities created by other parties, typically investment banks, including convertible structured notes. Convertible structured notes are fixed income debentures linked to equity. Convertible structured notes have the attributes of a convertible security, however, the investment bank that issued the convertible note assumes the credit risk associated with the investment, rather than the issuer of the underlying common stock into which the note is convertible. The Fund's holdings of synthetic convertible securities are considered convertible securities for purposes of the Fund's policy to invest at least 20% of its managed

15

assets in convertible securities and 80% of its managed assets in a diversified portfolio of convertible securities and below investment grade (high yield/high risk) non-convertible debt securities.

HIGH YIELD SECURITIES. Investment in high yield non-convertible debt securities forms an important part of the Fund's investment strategies. The Fund will invest in high yield securities for either current income or capital appreciation or both. Under normal circumstances, the Fund will invest at least 20% of its managed assets in high yield non-convertible debt securities. The high yield securities in which the Fund invests are rated Ba or lower by Moody's or BB or lower by Standard & Poor's or are unrated but determined by Calamos to be of comparable quality. The Fund may invest in high yield securities of any rating. The Fund may, but currently does not intend to, invest up to 5% of its total assets in distressed securities that are in default or the issuers of which are in bankruptcy. Non-convertible debt securities rated below investment grade are commonly referred to as "junk bonds" and are considered speculative with respect to the issuer's capacity to pay interest and repay principal. Below investment grade non-convertible debt securities involve greater risk of loss, are subject to greater price volatility and are less liquid, especially during periods of economic uncertainty or change, than higher rated debt securities.

OTHER INCOME SECURITIES. The Fund may also invest in investment grade income securities. The Fund's investments in investment grade income securities may have fixed or variable principal payments and all types of interest rate and dividend payment and reset terms, including fixed rate, adjustable rate, zero coupon, contingent, deferred, payment in kind and auction rate features.

PREFERRED SHARES. The Fund may invest in preferred shares. The preferred shares in which the Fund typically will invest will be convertible securities. Preferred shares are equity securities, but they have many characteristics of fixed income securities, such as a fixed dividend payment rate and/or a liquidity preference over the issuer's common shares. However, because preferred shares are equity securities, they may be more susceptible to risks traditionally associated with equity investments than the Fund's fixed income securities.

FOREIGN SECURITIES. Although the Fund primarily invests in securities of U.S. issuers, the Fund may invest up to 25% of its managed assets in securities of foreign issuers, including debt and equity securities of corporate issuers and debt securities of government issuers in developed and emerging markets. The Fund may invest up to 15% of its managed assets in securities of foreign issuers in emerging markets. A foreign issuer is a company organized under the laws of a foreign country that is principally traded in the financial markets of a foreign country. For purposes of these percentage limitations, foreign securities do not include securities represented by American Depository Receipts ("ADRs") or securities guaranteed by a U.S. person.

RULE 144A SECURITIES. The Fund may invest without limit in securities that have not been registered for public sale, but that are eligible for purchase and sale by certain qualified institutional buyers ("Rule 144A Securities"). Calamos, under the supervision of the Board of Trustees, will consider whether securities purchased under Rule 144A are illiquid and thus subject to the Fund's limit of investing no more than 15% of its managed assets in illiquid securities. A determination of whether a Rule 144A security is liquid or not is a question of fact. In making this determination, Calamos will consider the trading markets for the specific security, taking into account the unregistered nature of a Rule 144A security. In addition, Calamos could consider the (1) frequency of trades and quotes, (2) number of dealers and potential purchasers,
(3) dealer undertakings to make a market and (4) nature of a security and of marketplace trades (e.g., the time needed to dispose of the security, the method of soliciting offers and the mechanics of transfer). The liquidity of Rule 144A securities will be monitored and, if as a result of changed conditions, it is determined that a Rule 144A security is no longer liquid, the Fund's holdings of illiquid securities would be reviewed to determine what, if any, steps are required to assure that the Fund does not invest more than 15% of its assets in illiquid securities. Investing in Rule 144A securities could have the effect of increasing the amount of the portfolio's assets invested in illiquid securities if qualified institutional buyers are unwilling to purchase such securities.

REITS. The Fund may invest in real estate investment trusts ("REITs"). REITs primarily invest in income producing real estate or real estate related loans or interests. REITs are generally classified as

16

equity REITs, mortgage REITs or a combination of equity and mortgage REITs. Equity REITs invest the majority of their assets directly in real property and derive income primarily from the collection of rents. Equity REITs can also realize capital gains by selling properties that have appreciated in value. Mortgage REITs invest the majority of their assets in real estate mortgages and derive income from the collection of interest payments. REITs are not taxed on income distributed to shareholders; provided, they comply with the applicable requirements of the Internal Revenue Code of 1986, as amended (the "Code"). The Fund will indirectly bear its proportionate share of any management and other expenses paid by REITs in which it invests in addition to the expenses paid by the Fund. Debt securities issued by REITs are, for the most part, general and unsecured obligations and are subject to risks associated with REITs.

U.S. GOVERNMENT SECURITIES. U.S. government securities in which the Fund invests include debt obligations of varying maturities issued by the U.S. Treasury or issued or guaranteed by an agency or instrumentality of the U.S. government, including the Federal Housing Administration, Federal Financing Bank, Farmers Home Administration, Export-Import Bank of the United States, Small Business Administration, Government National Mortgage Association, General Services Administration, Central Bank for Cooperatives, Federal Farm Credit Banks, Federal Home Loan Banks, Federal Home Loan Mortgage Corporation, Federal National Mortgage Association ("FNMA"), Maritime Administration, Tennessee Valley Authority, District of Columbia Armory Board, Student Loan Marketing Association, Resolution Fund Corporation and various institutions that previously were or currently are part of the Farm Credit System (which has been undergoing reorganization since 1987). Some U.S. government securities, such as U.S. Treasury bills, Treasury notes and Treasury bonds, which differ only in their interest rates, maturities and times of issuance, are supported by the full faith and credit of the United States. Others are supported by: (i) the right of the issuer to borrow from the U.S. Treasury, such as securities of the Federal Home Loan Banks; (ii) the discretionary authority of the U.S. government to purchase the agency's obligations, such as securities of the FNMA; or (iii) only the credit of the issuer. No assurance can be given that the U.S. government will provide financial support in the future to U.S. government agencies, authorities or instrumentalities that are not supported by the full faith and credit of the United States. Securities guaranteed as to principal and interest by the U.S. government, its agencies, authorities or instrumentalities include: (i) securities for which the payment of principal and interest is backed by an irrevocable letter of credit issued by the U.S. government or any of its agencies, authorities or instrumentalities; and (ii) participations in loans made to non-U.S. governments or other entities that are so guaranteed. The secondary market for certain of these participations is limited and, therefore, may be regarded as illiquid. U.S. government securities include STRIPS and CUBES, which are issued by the U.S. Treasury as component parts of U.S. Treasury bonds and represent scheduled interest and principal payments on the bonds.

ZERO COUPON SECURITIES. The securities in which the Fund invests may include zero coupon securities, which are debt obligations that are issued or purchased at a significant discount from face value. The discount approximates the total amount of interest the security will accrue and compound over the period until maturity or the particular interest payment date at a rate of interest reflecting the market rate of the security at the time of issuance. Zero coupon securities do not require the periodic payment of interest. These investments benefit the issuer by mitigating its need for cash to meet debt service, but generally require a higher rate of return to attract investors who are willing to defer receipt of cash. These investments may experience greater volatility in market value than U.S. government securities that make regular payments of interest. The Fund accrues income on these investments for tax and accounting purposes, which is distributable to shareholders and which, because no cash is received at the time of accrual, may require the liquidation of other portfolio securities to satisfy the Fund's distribution obligations, in which case the Fund will forgo the purchase of additional income producing assets with these funds. Zero coupon U.S. government securities include STRIPS and CUBES, which are issued by the U.S. Treasury as component parts of U.S. Treasury bonds and represent scheduled interest and principal payments on the bonds.

INVESTMENTS IN EQUITY SECURITIES. Consistent with its objective, the Fund may invest in equity securities. Equity securities, such as common stock, generally represent an ownership interest in a

17

company. Although equity securities have historically generated higher average returns than fixed income securities, equity securities have also experienced significantly more volatility in those returns. An adverse event, such as an unfavorable earnings report, may depress the value of a particular equity security held by the Fund. Also, the prices of equity securities, particularly common stocks, are sensitive to general movements in the stock market. A drop in the stock market may depress the price of equity securities held by the Fund.

OTHER INVESTMENT COMPANIES. The Fund may invest in the securities of other investment companies to the extent that such investments are consistent with the Fund's investment objective and policies and are permissible under the 1940 Act. Under the 1940 Act, the Fund may not acquire the securities of other domestic or non-U.S. investment companies if, as a result, (1) more than 10% of the Fund's total assets would be invested in securities of other investment companies, (2) such purchase would result in more than 3% of the total outstanding voting securities of any one investment company being held by the Fund, or (3) more than 5% of the Fund's total assets would be invested in any one investment company. These limitations do not apply to the purchase of shares of any investment company in connection with a merger, consolidation, reorganization or acquisition of substantially all the assets of another investment company.

The Fund, as a holder of the securities of other investment companies, will bear its pro rata portion of the other investment companies' expenses, including advisory fees. These expenses are in addition to the direct expenses of the Fund's own operations.

TEMPORARY DEFENSIVE INVESTMENTS. Under unusual market or economic conditions or for temporary defensive purposes, the Fund may invest up to 100% of its total assets in securities issued or guaranteed by the U.S. government or its instrumentalities or agencies, certificates of deposit, bankers' acceptances and other bank obligations, commercial paper rated in the highest category by a nationally recognized statistical rating organization or other fixed income securities deemed by Calamos to be consistent with a defensive posture, or may hold cash. The yield on such securities may be lower than the yield on lower rated fixed income securities.

REPURCHASE AGREEMENTS. The Fund may enter into repurchase agreements with broker-dealers, member banks of the Federal Reserve System and other financial institutions. Repurchase agreements are arrangements under which the Fund purchases securities and the seller agrees to repurchase the securities within a specific time and at a specific price. The repurchase price is generally higher than the Fund's purchase price, with the difference being income to the Fund. The counterparty's obligations under the repurchase agreement are collateralized with U.S. Treasury and/or agency obligations with a market value of not less than 100% of the obligations, valued daily. Collateral is held by the Fund's custodian in a segregated, safekeeping account for the benefit of the Fund. Repurchase agreements afford the Fund an opportunity to earn income on temporarily available cash at low risk. In the event of commencement of bankruptcy or insolvency proceedings with respect to the seller of the security before repurchase of the security under a repurchase agreement, the Fund may encounter delay and incur costs before being able to sell the security. Such a delay may involve loss of interest or a decline in price of the security. If the court characterizes the transaction as a loan and the Fund has not perfected a security interest in the security, the Fund may be required to return the security to the seller's estate and be treated as an unsecured creditor of the seller. As an unsecured creditor, the Fund would be at risk of losing some or all of the principal and interest involved in the transaction.

LENDING OF PORTFOLIO SECURITIES. The Fund may lend portfolio securities to registered broker-dealers or other institutional investors deemed by Calamos to be of good standing under agreements which require that the loans be secured continuously by collateral in cash, cash equivalents or U.S. Treasury bills maintained on a current basis at an amount at least equal to the market value of the securities loaned. The Fund continues to receive the equivalent of the interest or dividends paid by the issuer on the securities loaned as well as the benefit of an increase and the detriment of any decrease in the market value of the securities loaned and would also receive compensation based on investment of the collateral. The Fund would not, however, have the right to vote any securities having voting rights during the existence of the

18

loan, but would call the loan in anticipation of an important vote to be taken among holders of the securities or of the giving or withholding of consent on a material matter affecting the investment.

As with other extensions of credit, there are risks of delay in recovery or even loss of rights in the collateral should the borrower of the securities fail financially. At no time would the value of the securities loaned exceed 33 1/3% of the value of the Fund's total assets.

PORTFOLIO TURNOVER. It is the policy of the Fund not to engage in trading for short-term profits although portfolio turnover rate is not considered a limiting factor in the execution of investment decisions for the Fund.

LEVERAGE

The Fund may issue preferred shares, including Preferred Shares, or borrow or issue short-term debt securities to increase its assets available for investment. The Fund is authorized to issue preferred shares, borrow or issue debt obligations. The Preferred Shares will have a liquidation preference of $25,000 per share plus an amount equal to accumulated but unpaid dividends. As a non-fundamental policy, such preferred shares, including Preferred Shares, or Borrowings may not exceed 38% of the Fund's total assets. However, the Board of Trustees reserves the right to issue preferred shares or borrow to the extent permitted by the 1940 Act. Before issuing any additional preferred shares to increase its assets available for investment, the Fund must have received confirmation from Moody's and Fitch or any substitute rating agency that the proposed issuance will not adversely affect such rating agency's then-current rating on the Preferred Shares. The Fund generally will not issue preferred shares or borrow unless Calamos expects that the Fund will achieve a greater return on such borrowed funds than the additional costs the Fund incurs as a result of such borrowing. The Fund also may borrow money as a temporary measure for extraordinary or emergency purposes, including the payment of dividends and the settlement of securities transactions which otherwise might require untimely dispositions of the Fund's holdings. When the Fund leverages its assets, the fees paid to Calamos for investment management services will be higher than if the Fund did not borrow because Calamos's fees are calculated based on the Fund's managed assets, which include the proceeds of the issuance of preferred shares or any outstanding Borrowings. Consequently, the Fund and Calamos may have differing interests in determining whether to leverage the Fund's assets.

The Fund's use of leverage is premised upon the expectation that the Fund's preferred share dividends or borrowing cost will be lower than the return the Fund achieves on its investments with the proceeds of the issuance of preferred shares or borrowing. Such difference in return may result from the Fund's higher credit rating or the short-term nature of its borrowing compared to the long-term nature of its investments. Since the total assets of the Fund (including the assets obtained from leverage) will be invested in the higher yielding portfolio investments or portfolio investments with the potential for capital appreciation, the holders of common shares will be the beneficiaries of the incremental return. Should the differential between the underlying assets and cost of leverage narrow, the incremental return "pick up" will be reduced. Furthermore, if long-term interest rates rise or the Fund otherwise incurs losses on its investments, the Fund's net asset value attributable to its common shares will reflect the decline in the value of portfolio holdings resulting therefrom.

To the extent the income or capital appreciation derived from securities purchased with funds received from leverage exceeds the cost of leverage, the Fund's return to common shareholders will be greater than if leverage had not been used. Conversely, if the income or capital appreciation from the securities purchased with such funds is not sufficient to cover the cost of leverage or if the Fund incurs capital losses, the return of the Fund to common shareholders will be less than if leverage had not been used. Calamos may determine to maintain the Fund's leveraged position if it expects that the long-term benefits to the Fund's common shareholders of maintaining the leveraged position will outweigh the current reduced return. Capital raised through the issuance of preferred shares or borrowing will be subject to dividend payments or interest costs that may or may not exceed the income and appreciation on the assets purchased. The Fund also may be required to maintain minimum average balances in connection

19

with Borrowings or to pay a commitment or other fee to maintain a line of credit; either of these requirements would increase the cost of borrowing over the stated interest rate.

Under the 1940 Act, the Fund is not permitted to issue preferred shares unless immediately after such issuance the net asset value of the Fund's portfolio is at least 200% of the liquidation value of the outstanding preferred shares (i.e., such liquidation value may not exceed 50% of the value of the Fund's total assets). In addition, the Fund is not permitted to declare any cash dividend or other distribution on its common shares unless, at the time of such declaration, the net asset value of the Fund's portfolio (determined after deducting the amount of such dividend or distribution) is at least 200% of such liquidation value. In the event preferred shares are issued, the Fund intends, to the extent possible, to purchase or redeem preferred shares from time to time to maintain coverage of any preferred shares of at least 200%. Under the 1940 Act, the Fund is not permitted to incur indebtedness unless immediately after such borrowing the Fund has an asset coverage of at least 300% of the aggregate outstanding principal balance of indebtedness (i.e., such indebtedness may not exceed 33 1/3% of the value of the Fund's total assets). Additionally, under the 1940 Act, the Fund may not declare any dividend or other distribution upon any class of its shares, or purchase any such shares, unless the aggregate indebtedness of the Fund has, at the time of the declaration of any such dividend or distribution or at the time of any such purchase, an asset coverage of at least 300% after deducting the amount of such dividend, distribution, or purchase price, as the case may be.

The Fund may be subject to certain restrictions on investments imposed by guidelines of one or more nationally recognized rating organizations which may issue ratings for the preferred shares or short-term debt instruments issued by the Fund. These guidelines may impose asset coverage or portfolio composition requirements that are more stringent than those imposed by the 1940 Act. Certain types of Borrowings may result in the Fund being subject to covenants in credit agreements, including those relating to asset coverage, borrowing base and portfolio composition requirements and additional covenants. The Fund may also be required to pledge its assets to the lenders in connection with certain types of Borrowings. Calamos does not anticipate that these covenants or restrictions will adversely affect its ability to manage the Fund's portfolio in accordance with the Fund's investment objective and policies. Due to these covenants or restrictions, the Fund may be forced to liquidate investments at times and at prices that are not favorable to the Fund, or the Fund may be forced to forgo investments that Calamos otherwise views as favorable.

If and to the extent that the Fund employs leverage will depend on many factors, the most important of which are investment outlook, market conditions and interest rates.

INTEREST RATE TRANSACTIONS

In connection with the Fund's anticipated use of leverage through its sale of Preferred Shares or Borrowings, the Fund may enter into interest rate swap or cap transactions. Interest rate swaps involve the Fund's agreement with the swap counterparty to pay a fixed rate payment in exchange for the counterparty paying the Fund a variable rate payment that is expected to approximate the rate of any variable rate payment obligation on Preferred Shares or any variable rate borrowing. The payment obligation would be based on the notional amount of the swap. The Fund's payment obligations under the swap are general unsecured obligations of the Fund and are ranked senior to distributions under the common shares and Preferred Shares.

The Fund may use an interest rate cap, which would require it to pay a premium to the cap counterparty and would entitle it, to the extent that a specified variable rate index exceeds a predetermined fixed rate, to receive from the counterparty payment of the difference based on the notional amount. The Fund would use interest rate swaps or caps only with the intent to reduce or eliminate the risk that an increase in short-term interest rates could have on common share net earnings as a result of leverage.

The Fund will usually enter into swaps or caps on a net basis; that is, the two payment streams will be netted out in a cash settlement on the payment date or dates specified in the instrument, with the Fund receiving or paying, as the case may be, only the net amount of the two payments. The Fund intends to

20

maintain in a segregated account with its custodian cash or liquid securities having a value at least equal to the Fund's net payment obligations under any swap transaction, marked to market daily. Under certain circumstances, the Fund may be required to pledge the assets in such segregated account to the counter- party. Any such pledge will result in the counterparty having a lien on the assets in the segregated account and the Fund's ability to make use of those assets will be limited.

The use of interest rate swaps and caps is a highly specialized activity that involves investment techniques and risks different from those associated with ordinary portfolio security transactions. Depending on the state of interest rates in general, the Fund's use of interest rate swaps or caps could enhance or harm the overall performance on the common shares. To the extent there is a decline in interest rates, the value of the interest rate swap or cap could decline, and could result in a decline in the net asset value of the common shares. In addition, if short-term interest rates are lower than the Fund's fixed rate of payment on the interest rate swap, the swap will reduce common share net earnings. If, on the other hand, short-term interest rates are higher than the fixed rate of payment on the interest rate swap, the swap will enhance common share net earnings. Buying interest rate caps could enhance the performance of the common shares by providing a maximum leverage expense. Buying interest rate caps could also decrease the net earnings of the common shares in the event that the premium paid by the Fund to the counterparty exceeds the additional amount the Fund would have been required to pay had it not entered into the cap agreement. The Fund has no current intention of selling an interest rate swap or cap. The Fund will not enter into interest rate swap or cap transactions in an aggregate notional amount that exceeds the outstanding amount of the Fund's leverage.

Interest rate swaps and caps do not involve the delivery of securities or other underlying assets or principal. Accordingly, the risk of loss with respect to interest rate swaps is limited to the net amount of interest payments that the Fund is contractually obligated to make. If the counterparty defaults, the Fund would not be able to use the anticipated net receipts under the swap or cap to offset the dividend payments on Preferred Shares or interest payments on Borrowings. Depending on whether the Fund would be entitled to receive net payments from the counterparty on the swap or cap, which in turn would depend on the general state of short-term interest rates at that point in time, such a default could negatively impact the performance of the common shares.

Although this will not guarantee that the counterparty does not default, the Fund will not enter into an interest rate swap or cap transaction with any counterparty that Calamos believes does not have the financial resources to honor its obligation under the interest rate swap or cap transaction. Further, Calamos will continually monitor the financial stability of a counterparty to an interest rate swap or cap transaction in an effort to proactively protect the Fund's investments.

In addition, at the time the interest rate swap or cap transaction reaches its scheduled termination date, there is a risk that the Fund will not be able to obtain a replacement transaction or that the terms of the replacement will not be as favorable as on the expiring transaction. If this occurs, it could have a negative impact on the performance of the common shares.

The Fund may choose or be required to redeem some or all Preferred Shares or prepay any Borrowings. This redemption would likely result in the Fund seeking to terminate early all or a portion of any swap or cap transaction. Such early termination of a swap could result in a termination payment by or to the Fund. A termination payment by the Fund would result in a reduction in common share net earnings. An early termination of a cap could result in a termination payment to the Fund.

21

RISK FACTORS

Risk is inherent in all investing. Investing in any investment company security involves risk, including the risk that you may receive little or no return on your investment or that you may lose part or all of your investment. Therefore, before investing you should consider carefully the following risks that you assume when you invest in Preferred Shares.

RISKS OF INVESTING IN PREFERRED SHARES

INTEREST RATE RISK. The Fund issues Preferred Shares, which pay dividends based on short-term interest rates. The Fund purchases convertible securities, high yield securities and other securities that pay dividends that are based on the performance of the issuing companies, and/or that pay interest, based on longer term yields. These dividends and interest payments are typically, although not always higher than short-term interest rates. Such dividends and interest payments, as well as long-term and short-term interest rates, fluctuate. If short-term interest rates rise, dividend rates on the Preferred Shares may rise so that the amount of dividends paid to shareholders of Preferred Shares exceeds the income from the portfolio securities. Because income from the Fund's entire investment portfolio (not just the portion of the portfolio purchased with the proceeds of the Preferred Shares offering) is available to pay dividends on the Preferred Shares, dividend rates on the Preferred Shares would need to greatly exceed the Fund's net portfolio income before the Fund's ability to pay dividends on the Preferred Shares would be jeopardized. If long-term interest rates rise, this could negatively impact the value of the Fund's investment portfolio, reducing the amount of assets serving as asset coverage for the Preferred Shares. Market interest rates currently are at historically low levels.

AUCTION RISK. You may not be able to sell your Preferred Shares at an auction if the auction fails; that is, if there are more Preferred Shares offered for sale than there are buyers for those shares. Also, if you place hold orders (orders to retain Preferred Shares) at an auction only at a specified rate, and that bid rate exceeds the rate set at the auction, you will not retain your Preferred Shares. Additionally, if you buy shares or elect to retain shares without specifying a rate below which you would not wish to continue to hold those shares, and the auction sets a below-market rate, you may receive a lower rate of return on your shares than the market rate. Finally, the dividend periods for the Preferred Shares may be changed by the Fund, subject to certain conditions with notice to the holders of Preferred Shares, which could also affect the liquidity of your investment. See "Description of Preferred Shares" and "The Auction -- Auction Procedures."

SECONDARY MARKET RISK. If you try to sell your Preferred Shares between auctions, you may not be able to sell any or all of your shares, or you may not be able to sell them for $25,000 per share or $25,000 per share plus accumulated dividends. If the Fund has designated a special dividend period (a rate period other than 7 days in the case of Series M, TU, W, TH and F and other than 28 days in the case of Series A), changes in interest rates could affect the price you would receive if you sold your shares in the secondary market.
Broker-dealers that maintain a secondary trading market for Preferred Shares are not required to maintain that market, and the Fund is not required to redeem shares either if an auction or an attempted secondary market sale fails because of a lack of buyers. Preferred Shares are not listed on a stock exchange or the Nasdaq stock market. You may transfer shares outside of auctions only to or through a Broker-Dealer that has entered into an agreement with the Fund's auction agent, The Bank of New York, and the Fund or such other persons as the Fund permits. If you sell your Preferred Shares to a broker-dealer between auctions, you may receive less than the price you paid for them, especially if market interest rates have risen since the last auction. Accumulated Preferred Shares dividends, however, should at least partially compensate for the increased market interest rates.

RATINGS AND ASSET COVERAGE RISK. Although it is expected that Moody's will assign a rating of "Aaa" to the Preferred Shares and Fitch will assign a rating of "AAA" to the Preferred Shares, such ratings do not eliminate or necessarily mitigate the risks of investing in Preferred Shares. Moody's or Fitch could downgrade its rating of the Preferred Shares or withdraw its rating of the Preferred Shares at any time, which may make your shares less liquid at an auction or in the secondary market. If Moody's or Fitch

22

downgrades the Preferred Shares, the Fund may alter its portfolio or redeem Preferred Shares in an effort to improve the rating, although there is no assurance that it will be able to do so to the extent necessary to restore the prior rating. If the Fund fails to satisfy the asset coverage ratios discussed under "Description of Preferred Shares -- Rating Agency Guidelines," the Fund will be required to redeem a sufficient number of Preferred Shares in order to return to compliance with the asset coverage ratios. The Fund may be required to redeem Preferred Shares at a time when it is not advantageous for the Fund to make such redemption or to liquidate portfolio securities in order to have available cash for such redemption. The Fund may voluntarily redeem Preferred Shares under certain circumstances in order to meet asset maintenance tests. Although a sale of substantially all the assets of the Fund or the merger of the Fund into another entity would require the approval of the holders of the Preferred Shares voting as a separate class as discussed under "Description of the Preferred Shares -- Voting Rights," a sale of substantially all of the assets of the Fund or the merger of the Fund with or into another entity would not be treated as a liquidation of the Fund nor require that the Fund redeem the Preferred Shares, in whole or in part, provided that the Fund continued to comply with the asset coverage ratios discussed under "Description of Preferred Shares -- Rating Agency Guidelines." See "Description of Preferred Shares -- Rating Agency Guidelines" for a description of the asset maintenance tests the Fund must meet.

INFLATION RISK. Inflation is the reduction in the purchasing power of money resulting from the increase in the price of goods and services. Inflation risk is the risk that the inflation adjusted (or "real") value of your Preferred Shares investment or the income from that investment will be worth less in the future. As inflation occurs, the real value of the Preferred Shares and distributions declines. In an inflationary period, however, it is expected that, through the auction process, Preferred Shares dividend rates would increase, tending to offset this risk.

INCOME RISK. The Fund's income is based primarily on the income it earns from its investments, which vary widely over the short- and long-term. If the Fund's income drops, over time the Fund's ability to make dividend payments with respect to the Preferred Shares may be impaired. See "-- General Risks of Investing in the Fund" below for the general risks affecting the Fund.

DECLINE IN NET ASSET VALUE RISK. A material decline in the Fund's net asset value may impair the Fund's ability to maintain required levels of asset coverage. For a description of risks affecting the Fund, see "-- General Risks of Investing in the Fund" below.

PAYMENT RESTRICTIONS. The Fund is prohibited from declaring, paying or making any dividends or distributions on Preferred Shares unless it satisfies certain conditions. See "Description of Preferred Shares -- Restrictions on Dividend, Redemption and Other Payments." The Fund is also prohibited from declaring, paying or making any dividends or distributions on common shares unless it satisfies certain conditions. These prohibitions on the payment of dividends or distributions might impair the Fund's ability to maintain its qualification as a regulated investment company for federal income tax purposes. The Fund intends, however, to redeem Preferred Shares if necessary to comply with the asset coverage requirements. There can be no assurance, however, that such redemptions can be effected in time to permit the Fund to distribute its income as required to maintain its qualification as a regulated investment company under the Code. See "U.S. Federal Income Tax Matters" in the Statement of Additional Information.

LEVERAGE RISK. The Fund uses financial leverage for investment purposes. In addition to issuing Preferred Shares, the Fund may make further use of financial leverage through borrowing, including the issuance of commercial paper or notes. As a non-fundamental policy, financial leverage (including Preferred Shares and Borrowings) may not exceed 38% of the Funds' total assets. Included in the 38% non-fundamental limitation, the Fund may also borrow funds (a) in connection with a loan made by a bank or other party that is privately arranged and not intended to be publicly distributed or (b) in an amount equal to up to 5% of its total assets for temporary purposes only.

If the Fund issues any senior securities representing indebtedness (as defined in the 1940 Act), under the requirements of the 1940 Act, the value of the Fund's total assets, less all liabilities and indebtedness of the Fund not represented by such senior securities, must be at least equal, immediately after any such senior securities representing indebtedness, to 300% of the aggregate value of such senior securities. Upon

23

the issuance of Preferred Shares, the value of the Fund's total assets, less all liabilities and indebtedness of the Fund not represented by senior securities must be at least equal, immediately after the issuance of the Preferred Shares, to 200% of the aggregate value of any senior securities and the Preferred Shares.

If the Fund seeks an investment grade rating from one or more nationally recognized statistical rating organizations for any commercial paper and notes (which the Fund expects to do if it issues any such commercial paper or notes), asset coverage or portfolio composition provisions in addition to and more stringent than those required by the 1940 Act may be imposed in connection with the issuance of such a rating. In addition, restrictions may be imposed on certain investment practices in which the Fund may otherwise engage. Any lender with respect to Borrowings by the Fund may require additional asset coverage and portfolio composition provisions as well as restrictions on the Fund's investment practices.

The money borrowed pursuant to any Borrowings may constitute a substantial lien and burden on the Preferred Shares by reason of their prior claim against the income of the Fund and against the net assets of the Fund in liquidation. The Fund may not be permitted to declare dividends or other distributions, including with respect to Preferred Shares or purchase or redeem shares, including Preferred Shares unless (i) at the time thereof the Fund meets certain asset coverage requirements and (ii) there is no event of default under any Borrowings, that is continuing. See "Description of Preferred Shares -- Restrictions on Dividend, Redemption and Other Payments." In the event of a default under any Borrowings, the lenders may have the right to cause a liquidation of the collateral (i.e., sell portfolio securities) and if any such default is not cured, the lenders may be able to control the liquidation as well.

The Fund reserves the right at any time, if it believes that market conditions are appropriate, to increase its level of debt or other senior securities to maintain or increase the Fund's current level of leverage to the extent permitted by the 1940 Act and existing agreements between the Fund and third parties. However, as a non-fundamental policy, financial leverage (the total of Preferred Shares or other preferred shares and any Borrowings) may not exceed 38% of the Fund's total assets.

Because the fee paid to Calamos will be calculated on the basis of managed assets, the fee will be higher when leverage is utilized, giving Calamos an incentive to utilize leverage.

GENERAL RISKS OF INVESTING IN THE FUND

LIMITED OPERATING HISTORY. The Fund is a recently organized closed-end management investment company with a limited operating history.

CONVERTIBLE SECURITIES. Investment in convertible securities form an important part of the Fund's investment strategies. Under normal circumstances, the Fund will invest at least 20% of its managed assets in convertible securities. Convertible securities generally offer lower interest or dividend yields than non-convertible securities of similar quality. The market values of convertible securities tend to decline as interest rates increase and, conversely, to increase as interest rates decline. However, the convertible's market value tends to reflect the market price of the common stock of the issuing company when that stock price is greater than the convertible's "conversion price." The conversion price is defined as the predetermined price at which the convertible could be exchanged for the associated stock. As the market price of the underlying common stock declines, the price of the convertible security tends to be influenced more by the yield of the convertible security. Thus, it may not decline in price to the same extent as the underlying common stock. In the event of a liquidation of the issuing company, holders of convertible securities would be paid before the company's common stockholders. Consequently, the issuer's convertible securities generally entail less risk than its common stock.

SYNTHETIC CONVERTIBLE SECURITIES. The value of a synthetic convertible security will respond differently to market fluctuations than a convertible security because a synthetic convertible is composed of two or more separate securities, each with its own market value. In addition, if the value of the underlying common stock or the level of the index involved in the convertible component falls below the exercise price of the warrant or option, the warrant or option may lose all value.

24

HIGH YIELD SECURITIES. Investment in high yield non-convertible debt securities forms an important part of the Fund's investment strategies. Under normal circumstances, the Fund will invest at least 20% of its managed assets in high yield non-convertible debt securities. The Fund may invest in high yield securities of any rating. The Fund may, but currently does not intend to, invest up to 5% of its total assets in distressed securities. Investment in high yield securities involves substantial risk of loss. Below investment grade non-convertible debt securities or comparable unrated securities are commonly referred to as "junk bonds" and are considered predominantly speculative with respect to the issuer's ability to pay interest and principal and are susceptible to default or decline in market value due to adverse economic and business developments. The market values for high yield securities tend to be very volatile, and these securities are less liquid than investment grade debt securities. For these reasons, your investment in the Fund is subject to the following specific risks:

- increased price sensitivity to changing interest rates and to a deteriorating economic environment;

- greater risk of loss due to default or declining credit quality;

- adverse company specific events are more likely to render the issuer unable to make interest and/or principal payments; and

- if a negative perception of the high yield market develops, the price and liquidity of high yield securities may be depressed. This negative perception could last for a significant period of time.

Securities rated below investment grade are speculative with respect to the capacity to pay interest and repay principal in accordance with the terms of such securities. A rating of C from Moody's means that the issue so rated can be regarded as having extremely poor prospects of ever attaining any real investment standing. Standard & Poor's assigns a rating of C to issues that are currently highly vulnerable to nonpayment, and the C rating may be used to cover a situation where a bankruptcy petition has been filed or similar action taken, but payments on the obligation are being continued (a C rating is also assigned to a preferred stock issue in arrears on dividends or sinking fund payments, but that is currently paying). See the Statement of Additional Information for a description of Moody's and Standard & Poor's ratings.

Adverse changes in economic conditions are more likely to lead to a weakened capacity of a high yield issuer to make principal payments and interest payments than an investment grade issuer. The principal amount of high yield securities outstanding has proliferated in the past decade as an increasing number of issuers have used high yield securities for corporate financing. An economic downturn could severely affect the ability of highly leveraged issuers to service their debt obligations or to repay their obligations upon maturity. Similarly, downturns in profitability in specific industries could adversely affect the ability of high yield issuers in those industries to meet their obligations. The market values of lower quality debt securities tend to reflect individual developments of the issuer to a greater extent than do higher quality securities, which react primarily to fluctuations in the general level of interest rates. Factors having an adverse impact on the market value of lower quality securities may have an adverse effect on the Fund's net asset value and the market value of its common shares. In addition, the Fund may incur additional expenses to the extent it is required to seek recovery upon a default in payment of principal or interest on its portfolio holdings. In certain circumstances, the Fund may be required to foreclose on an issuer's assets and take possession of its property or operations. In such circumstances, the Fund would incur additional costs in disposing of such assets and potential liabilities from operating any business acquired.

The secondary market for high yield securities may not be as liquid as the secondary market for more highly rated securities, a factor which may have an adverse effect on the Fund's ability to dispose of a particular security when necessary to meet its liquidity needs. There are fewer dealers in the market for high yield securities than investment grade obligations. The prices quoted by different dealers may vary significantly and the spread between the bid and asked price is generally much larger than for higher quality instruments. Under adverse market or economic conditions, the secondary market for high yield securities could contract further, independent of any specific adverse changes in the condition of a

25

particular issuer, and these instruments may become illiquid. As a result, the Fund could find it more difficult to sell these securities or may be able to sell the securities only at prices lower than if such securities were widely traded. Prices realized upon the sale of such lower rated or unrated securities, under these circumstances, may be less than the prices used in calculating the Fund's net asset value.

Since investors generally perceive that there are greater risks associated with lower quality debt securities of the type in which the Fund may invest a portion of its assets, the yields and prices of such securities may tend to fluctuate more than those for higher rated securities. In the lower quality segments of the debt securities market, changes in perceptions of issuers' creditworthiness tend to occur more frequently and in a more pronounced manner than do changes in higher quality segments of the debt securities market, resulting in greater yield and price volatility.

If the Fund invests in high yield securities that are rated C or below, the Fund will incur significant risk in addition to the risks associated with investments in high yield securities and corporate loans. Distressed securities frequently do not produce income while they are outstanding. The Fund may purchase distressed securities that are in default or the issuers of which are in bankruptcy. The Fund may be required to bear certain extraordinary expenses in order to protect and recover its investment.

INTEREST RATE RISK. Fixed income securities, including high yield securities, are subject to certain common risks, including:

- if interest rates go up, the value of debt securities in the Fund's portfolio generally will decline. Market interest rates currently are at historically low levels;

- during periods of declining interest rates, the issuer of a security may exercise its option to prepay principal earlier than scheduled, forcing the Fund to reinvest in lower yielding securities. This is known as call or prepayment risk. Debt securities frequently have call features that allow the issuer to repurchase the security prior to its stated maturity. An issuer may redeem an obligation if the issuer can refinance the debt at a lower cost due to declining interest rates or an improvement in the credit standing of the issuer; and

- during periods of rising interest rates, the average life of certain types of securities may be extended because of slower than expected principal payments. This may lock in a below market interest rate, increase the security's duration (the estimated period until the security is paid in full) and reduce the value of the security. This is known as extension risk.

ILLIQUID INVESTMENTS. The Fund may invest up to 15% of its managed assets in securities that, at the time of investment, are illiquid (determined using the Commission's standard applicable to investment companies, i.e., securities that cannot be disposed of within 7 days in the ordinary course of business at approximately the value at which the Fund has valued the securities). The Fund may also invest without limitation in securities that have not been registered for public sale, but that are eligible for purchase and sale by certain qualified institutional buyers. Calamos, under the supervision of the Board of Trustees, will determine whether securities purchased under Rule 144A are illiquid (that is, not readily marketable) and thus subject to the Fund's limit of investing no more than 15% of its managed assets in illiquid securities. Investments in Rule 144A Securities could have the effect of increasing the amount of the Fund's assets invested in illiquid securities if qualified institutional buyers are unwilling to purchase these Rule 144A Securities. Illiquid securities may be difficult to dispose of at a fair price at the times when the Fund believes it is desirable to do so. The market price of illiquid securities generally is more volatile than that of more liquid securities, which may adversely affect the price that the Fund pays for or recovers upon the sale of illiquid securities. Illiquid securities are also more difficult to value and Calamos' judgment may play a greater role in the valuation process. Investment of the Fund's assets in illiquid securities may restrict the Fund's ability to take advantage of market opportunities. The risks associated with illiquid securities may be particularly acute in situations in which the Fund's operations require cash and could result in the Fund borrowing to meet its short-term needs or incurring losses on the sale of illiquid securities.

26

FOREIGN SECURITIES. Investments in non-U.S. issuers may involve unique risks compared to investing in securities of U.S. issuers. These risks are more pronounced to the extent that the Fund invests a significant portion of its non-U.S. investments in one region or in the securities of emerging market issuers. These risks may include:

- less information about non-U.S. issuers or markets may be available due to less rigorous disclosure or accounting standards or regulatory practices;

- many non-U.S. markets are smaller, less liquid and more volatile. In a changing market, Calamos may not be able to sell the Fund's portfolio securities at times, in amounts and at prices it considers reasonable;

- the adverse effect of currency exchange rates or controls on the value of the Fund's investments;

- the economies of non-U.S. countries may grow at slower rates than expected or may experience a downturn or recession;

- economic, political and social developments may adversely affect the securities markets, including expropriation and nationalization;

- the difficulty in obtaining or enforcing a court judgment in non-U.S. countries;

- restrictions on foreign investments in non-U.S. jurisdictions;

- difficulties in effecting the repatriation of capital invested in non-U.S. countries; and

- withholding and other non-U.S. taxes may decrease the Fund's return.

There may be less publicly available information about non-U.S. markets and issuers than is available with respect to U.S. securities and issuers. Non-U.S. companies generally are not subject to accounting, auditing and financial reporting standards, practices and requirements comparable to those applicable to U.S. companies. The trading markets for most non-U.S. securities are generally less liquid and subject to greater price volatility than the markets for comparable securities in the United States. The markets for securities in certain emerging markets are in the earliest stages of their development. Even the markets for relatively widely traded securities in certain non-U.S. markets, including emerging market countries, may not be able to absorb, without price disruptions, a significant increase in trading volume or trades of a size customarily undertaken by institutional investors in the United States.

Additionally, market making and arbitrage activities are generally less extensive in such markets, which may contribute to increased volatility and reduced liquidity.

Economies and social and political conditions in individual countries may differ unfavorably from the United States. Non-U.S. economies may have less favorable rates of growth of gross domestic product, rates of inflation, currency valuation, capital reinvestment, resource self-sufficiency and balance of payments positions. Many countries have experienced substantial, and in some cases extremely high, rates of inflation for many years. Inflation and rapid fluctuations in inflation rates have had, and may continue to have, very negative effects on the economies and securities markets of certain emerging countries. Unanticipated political or social developments may also affect the values of the Fund's investments and the availability to the Fund of additional investments in such countries.

CURRENCY RISKS. The value of the securities denominated or quoted in foreign currencies may be adversely affected by fluctuations in the relative currency exchange rates and by exchange control regulations. The Fund's investment performance may be negatively affected by a devaluation of a currency in which the Fund's investments are denominated or quoted. Further, the Fund's investment performance may be significantly affected, either positively or negatively, by currency exchange rates because the U.S. dollar value of securities denominated or quoted in another currency will increase or decrease in response to changes in the value of such currency in relation to the U.S. dollar.

INTEREST RATE TRANSACTIONS RISK. The Fund may enter into an interest rate swap or cap transaction to attempt to protect itself from increasing dividend or interest expenses on its preferred shares, debt

27

securities or other borrowings resulting from increasing short-term interest rates. A decline in interest rates may result in a decline in the value of the swap or cap, which may result in a decline in the net asset value of the Fund.

REITS. Investing in REITs involves certain unique risks in addition to those risks associated with investing in the real estate industry in general. An equity REIT may be affected by changes in the value of the underlying properties owned by the REIT. A mortgage REIT may be affected by changes in interest rates and the ability of the issuers of its portfolio mortgages to repay their obligations. REITs are dependent upon the skills of their managers and are not diversified. REITs are generally dependent upon maintaining cash flows to repay borrowings and to make distributions to shareholders and are subject to the risk of default by lessees or borrowers. REITs whose underlying assets are concentrated in properties used by a particular industry, such as health care, are also subject to risks associated with such industry.

REITs (especially mortgage REITs) are also subject to interest rate risks. When interest rates decline, the value of a REIT's investment in fixed rate obligations can be expected to rise. Conversely, when interest rates rise, the value of a REIT's investment in fixed rate obligations can be expected to decline. If the REIT invests in adjustable rate mortgage loans the interest rates on which are reset periodically, yields on a REIT's investment in such loans will gradually align themselves to reflect changes in market interest rates. This causes the value of such investments to fluctuate less dramatically in response to interest rate fluctuations than would investments in fixed rate obligations.

REITs may have limited financial resources, may trade less frequently and in a limited volume and may be subject to more abrupt or erratic price movements than larger company securities. Historically, REITs have been more volatile in price than the larger capitalization stocks included in Standard & Poor's 500 Stock Index.

TAX RISK. The Fund may invest in convertible securities or other securities the federal income tax treatment of which may not be clear or may be subject to recharacterization by the Internal Revenue Service. It could be more difficult for the Fund to comply with the tax requirements applicable to regulated investment companies if the tax characterization of the Fund's investments or the tax treatment of the income from such investments were successfully challenged by the Internal Revenue Service. See "U.S. Federal Income Tax Matters."

MANAGEMENT RISK. Calamos' judgment about the attractiveness, relative value or potential appreciation of a particular sector, security or investment strategy may prove to be incorrect.

ANTITAKEOVER PROVISIONS. The Fund's Agreement and Declaration of Trust and By-laws include provisions that could limit the ability of other entities or persons to acquire control of the Fund or to change the composition of its Board of Trustees. Such provisions could limit the ability of shareholders to sell their shares at a premium over prevailing market prices by discouraging a third party from seeking to obtain control of the Fund. These provisions include staggered terms of office for the Trustees, advance notice requirements for shareholder proposals, and super-majority voting requirements for certain transactions with affiliates, conversion of the Fund to an open-end investment company or a merger, asset sale or similar transaction. Holders of preferred shares will have voting rights in addition to and separate from the voting rights of common shareholders with respect to certain of these matters. See "Description of Shares -- Preferred Shares" and "Certain Provisions of the Agreement and Declaration of Trust and By-Laws." The holders of preferred shares, on the one hand, and the holders of the common shares, on the other, may have interests that conflict in these situations.

MARKET DISRUPTION RISK. Certain events have a disruptive effect on the securities markets, such as terrorist attacks (including the terrorist attacks in the United States on September 11, 2001), war and other geopolitical events. The Fund cannot predict the effects of similar events in the future on the U.S. economy. High yield securities tend to be more volatile than higher rated debt securities so that these events and any actions resulting from them may have a greater impact on the prices and volatility of high yield securities than on higher rated securities.

28

MANAGEMENT OF THE FUND

TRUSTEES AND OFFICERS

The Fund's Board of Trustees provides broad supervision over the affairs of the Fund. The officers of the Fund are responsible for the Fund's operations. There are seven Trustees of the Fund, two of whom are "interested persons" of the Trust (as defined in the 1940 Act) and five of whom are not "interested persons." The names and business addresses of the trustees and officers of the Fund and their principal occupations and other affiliations during the past five years are set forth under "Management of the Fund" in the Statement of Additional Information.

INVESTMENT ADVISER

The Fund's investments are managed by Calamos, 1111 E. Warrenville Road, Naperville, IL. On June 30, 2003 Calamos managed approximately $17.8 billion in assets of individuals and institutions. Calamos is a wholly-owned subsidiary of Holdings. Holdings is controlled by John P. Calamos, who has been engaged in the investment advisory business since 1977.

INVESTMENT MANAGEMENT AGREEMENT

Subject to the overall authority of the Board of Trustees, Calamos regularly provides the Fund with investment research, advice and supervision and furnishes continuously an investment program for the Fund. In addition, Calamos furnishes for use of the Fund such office space and facilities as the Fund may require for its reasonable needs, supervises the business and affairs of the Fund and provides, on behalf of the Fund, the following other services to the extent that such services are not provided by persons who are not a party to the investment management agreement: (a) preparing or assisting in the preparation of reports to and meeting materials for the Trustees; (b) supervising, negotiating contractual arrangements with, to the extent appropriate, and monitoring the performance of, accounting agents, custodians, depositories, transfer agents and pricing agents, accountants, attorneys, printers, underwriters, broker-dealers, insurers and other persons in any capacity deemed to be necessary or desirable to Fund operations; (c) assisting in the preparation and making of filings with the Commission and other regulatory and self-regulatory organizations, including, but not limited to, preliminary and definitive proxy materials, amendments to the Fund's registration statement on Form N-2 and semi-annual reports on Form N-SAR; (d) overseeing the tabulation of proxies by the Fund's transfer agent; (e) assisting in the preparation and filing of the Fund's federal, state and local tax returns; (f) assisting in the preparation and filing of the Fund's federal excise tax return pursuant to
Section 4982 of the Code, if any; (g) providing assistance with investor and public relations matters; (h) monitoring the valuation of portfolio securities and the calculation of net asset value; (i) monitoring the registration of shares of beneficial interest of the Fund under applicable federal and state securities laws; (j) maintaining or causing to be maintained for the Fund all books, records and reports and any other information required under the 1940 Act, to the extent that such books, records and reports and other information are not maintained by the Fund's custodian or other agents of the Fund; (k) assisting in establishing the accounting policies of the Fund; (l) assisting in the resolution of accounting issues that may arise with respect to the Fund's operations and consulting with the Fund's independent accountants, legal counsel and the Fund's other agents as necessary in connection therewith; (m) reviewing the Fund's bills; (n) assisting the Fund in determining the amount of dividends and distributions available to be paid by the Fund to its shareholders, preparing and arranging for the printing of dividend notices to shareholders, and providing the transfer and dividend paying agent, the custodian, and the accounting agent with such information as is required for such parties to effect the payment of dividends and distributions; and (o) otherwise assisting the Fund as it may reasonably request in the conduct of the Fund's business, subject to the direction and control of the Trustees.

Under the investment management agreement, the Fund will pay to Calamos a fee based on the average weekly managed assets that is accrued daily and paid on a monthly basis. The fee paid by the Fund is at the annual rate of 0.80% of managed assets. Because the fees paid to Calamos are determined

29

on the basis of the Fund's managed assets, Calamos' interest in determining whether to leverage the Fund may differ from the interests of the Fund and its common shareholders.

Under the terms of its investment management agreement, except for the services and facilities provided by Calamos as set forth therein, the Fund shall assume and pay all expenses for all other Fund operations and activities and shall reimburse Calamos for any such expenses incurred by Calamos. The expenses borne by the Fund shall include, without limitation: (a) organization expenses of the Fund (including out-of-pocket expenses, but not including Calamos' overhead or employee costs); (b) fees payable to Calamos; (c) legal expenses;
(d) auditing and accounting expenses; (e) maintenance of books and records that are required to be maintained by the Fund's custodian or other agents of the Fund; (f) telephone, telex, facsimile, postage and other communications expenses; (g) taxes and governmental fees; (h) fees, dues and expenses incurred by the Fund in connection with membership in investment company trade organizations and the expense of attendance at professional meetings of such organizations; (i) fees and expenses of accounting agents, custodians, subcustodians, transfer agents, dividend disbursing agents and registrars; (j) payment for portfolio pricing or valuation services to pricing agents, accountants, bankers and other specialists, if any; (k) expenses of preparing share certificates; (l) expenses in connection with the issuance, offering, distribution, sale, redemption or repurchase of securities issued by the Fund;
(m) expenses relating to investor and public relations provided by parties other than Calamos; (n) expenses and fees of registering or qualifying shares of beneficial interest of the Fund for sale; (o) interest charges, bond premiums and other insurance expenses; (p) freight, insurance and other charges in connection with the shipment of the Fund's portfolio securities; (q) the compensation and all expenses (specifically including travel expenses relating to Fund business) of Trustees, officers and employees of the Fund who are not affiliated persons of Calamos; (r) brokerage commissions or other costs of acquiring or disposing of any portfolio securities of the Fund; (s) expenses of printing and distributing reports, notices and dividends to shareholders; (t) expenses of preparing and setting in type, printing and mailing prospectuses and statements of additional information of the Fund and supplements thereto; (u) costs of stationery; (v) any litigation expenses; (w) indemnification of Trustees and officers of the Fund; (x) costs of shareholders' and other meetings; (y) interest on borrowed money, if any; and (z) the fees and other expenses of listing the Fund's shares on the New York Stock Exchange or any other national stock exchange.

For the first eight years of the Fund's operations, Calamos has contractually agreed to waive a portion of its management fee at the annual rate, and for the time periods, set forth below:

                            FEE WAIVED (AS                                 FEE WAIVED (AS
                            A PERCENTAGE OF                                A PERCENTAGE OF
                            AVERAGE WEEKLY                                 AVERAGE WEEKLY
PERIOD ENDING MAY 31,       MANAGED ASSETS)     PERIOD ENDING MAY 31,      MANAGED ASSETS)
---------------------       ---------------     ---------------------      ---------------
2003(1)...................      0.10%         2008......................       0.10%
2004......................      0.10%         2009......................       0.07%
2005......................      0.10%         2010......................       0.05%
2006......................      0.10%         2011......................       0.03%
2007......................      0.10%


(1) From the commencement of operations.

Calamos has not agreed to waive any portion of its management fee beyond May 31, 2011.

PORTFOLIO MANAGER

John P. Calamos and Nick P. Calamos are responsible for managing the portfolio of the Fund. During the past five years, John P. Calamos has been president of Calamos and CFS, an affiliate of Calamos, and Nick P. Calamos has been senior executive vice president of Calamos and CFS. For over 20 years, the Calamos management team has managed money for their clients in convertible, high yield and global strategies.

30

Furthermore, Calamos has extensive experience investing in foreign markets through its convertible securities and high yield securities strategies. Such experience has included investments in established as well as emerging foreign markets.

FUND ACCOUNTANT

Under the terms of a fund accounting servicing agreement ("Fund Accounting Servicing Agreement"), U.S. Bancorp Fund Services, LLC ("USB") provides certain administrative and accounting services, including but not limited to, accounting, valuation, financial reporting and tax accounting services to the Fund and to the Calamos Investment Trust and Calamos Advisors Trust (the Fund, Calamos Investment Trust and Calamos Advisors Trust are collectively referred to as the "Calamos Funds") as described more fully in the Statement of Additional Information. For the services rendered to the Calamos Funds, USB receives fees based on the combined managed assets of the Calamos Funds ("Combined Assets"). Each fund of the Calamos Funds pays its pro rata share of the fees payable to USB described below based on relative managed assets of each fund.

For the fund accounting services USB receives a fee at the annual rate of $750,000 on the first $2.5 billion of Combined Assets; 0.02% on the next $2.5 billion of Combined Assets; 0.01% on the next $2.5 billion of Combined Assets; 0.0075% on the next $2.5 billion of Combined Assets and 0.005% on Combined Assets above $10 billion ("fund accounting service fee"). For the financial accounting services USB receives a fee at the annual rate of 0.0200% on the first $1 billion of Combined Assets; 0.0175% on the next $1 billion of Combined Assets and 0.0125% on Combined Assets above $2 billion ("financial accounting service fee").

Management has proposed to the Boards of Trustees of the Calamos Funds, including the Fund, that Calamos provide the financial accounting services to the Calamos Funds described more fully in the Statement of Additional Information, rather than USB. For providing those services, it is proposed that Calamos will receive a fee at the annual rate of 0.0175% on the first $1 billion of Combined Assets; 0.0150% on the next $1 billion of Combined Assets; and 0.0110% on Combined Assets above $2 billion ("proposed financial accounting service fee"). Each fund of the Calamos Funds will pay its pro rata share of the proposed financial accounting service fee to Calamos based on relative managed assets of each fund.

Under management's proposal, Calamos will replace USB solely with respect to certain financial accounting services described in the Statement of Additional Information. Calamos will receive the proposed financial accounting service fee described above. Under the proposal, USB will continue to provide the fund accounting services described in the Statement of Additional Information and receive the fund accounting service fee described above. The Boards of Trustees at a meeting held on April 14, 2003 were supportive of management's proposal; however, as of the date hereof no final determination with respect to management's proposal has been made.

31

DESCRIPTION OF PREFERRED SHARES

The following is a brief description of the terms of the Preferred Shares. For the complete terms of the Preferred Shares, please refer to the detailed description of the Preferred Shares in the Statement of Preferences for Preferred Shares (the "Statement") attached as Appendix A to the Statement of Additional Information.

GENERAL

The Fund's Agreement and Declaration of Trust authorizes the issuance of preferred shares, no par value per share, in one or more classes or series with rights as determined by the Board of Trustees without the approval of common shareholders. The Statement currently authorizes the issuance of 3,000 Preferred Shares, Series M, 3,000 Preferred Shares, Series TU, 3,000 Preferred Shares, Series W, 3,000 Preferred Shares, Series TH, 3,000 Preferred Shares, Series F and 2,200 Preferred Shares, Series A. All Preferred Shares will have a liquidation preference of $25,000 per share, plus an amount equal to accumulated but unpaid dividends (whether or not earned or declared).

The Preferred Shares of each series will rank on parity with any other series of Preferred Shares and any other series of preferred shares of the Fund as to the payment of dividends and the distribution of assets upon liquidation. Each Preferred Shares carries one vote on matters on which Preferred Shares can be voted. The Preferred Shares, when issued by the Fund and paid for pursuant to the terms of this prospectus, will be fully paid and non-assessable and will have no preemptive, exchange or conversion rights. Any Preferred Shares repurchased or redeemed by the Fund will be classified as authorized and unissued Preferred Shares. The Board of Trustees may by resolution classify or reclassify any authorized and unissued Preferred Shares from time to time by setting or changing the preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications or terms or conditions of redemption of such shares. The Preferred Shares will not be subject to any sinking fund, but will be subject to mandatory redemption under certain circumstances described below.

DIVIDENDS AND RATE PERIODS

The following is a general description of dividends and rate periods for the Preferred Shares.

RATE PERIODS. The initial rate period and rate for each series of Preferred Shares is as set forth below:

SERIES                  INITIAL RATE PERIOD   INITIAL DIVIDEND RATE
------                  -------------------   ---------------------
M....................            days                    %
TU...................            days
W....................            days
TH...................            days
F....................            days
A....................            days

Any subsequent rate periods of a series of Preferred Shares will generally be seven or, in the case of Series A Preferred Shares, 28 days. The Fund, subject to certain conditions, may change the length of subsequent rate periods by designating them as special rate periods. See "-- Designation of Special Rate Periods" below. The Board of Trustees may also amend the rate periods of one or more series of Preferred Shares on a permanent basis without the approval of the Preferred Shareholders.

DIVIDEND PAYMENT DATES. Dividends on each series of Preferred Shares will be payable, when, as and if declared by the Board of Trustees, out of legally available funds in accordance with the Agreement and Declaration of Trust, the Statement and applicable law. Dividends so declared and payable shall be paid to the extent permitted under the Code, and to the extent available and in preference to and priority over any

32

dividend declared and payable on the common shares. The initial dividend payment date and the day of the week upon which subsequent dividends, if any, will be paid for each series are as follows:

                        INITIAL DIVIDEND   SUBSEQUENT DIVIDEND
SERIES                    PAYMENT DATE         PAYMENT DAY
------                  ----------------   -------------------
M....................
TU...................
W....................
TH...................
F....................
A....................

Dividend periods generally will begin on the first business day after an auction. If dividends are payable on a day that is not a business day, then dividends will generally be payable on the next day if such day is a business day, or as otherwise specified in the Statement. In addition, the Fund may specify different dividend payment dates for any special rate period of more than seven days in the case of Series M, TU, W, TH and F Preferred Shares and more than 28 days in the case of Series A Preferred Shares, provided that such dates shall be set forth in the notice of special rate period relating to such special rate period.

Dividends will be paid through the Depository Trust Company ("DTC") on each dividend payment date. The dividend payment date will normally be the first business day after the dividend period ends. DTC, in accordance with its current procedures, is expected to distribute dividends received from the auction agent in same-day funds on each dividend payment date to agent members (members of DTC that will act on behalf of existing or potential holders of Preferred Shares). These agent members are in turn expected to distribute such dividends to the persons for whom they are acting as agents. However, each of the current Broker-Dealers has indicated to the Fund that dividend payments will be available in same-day funds on each dividend payment date to customers that use a Broker-Dealer or a Broker-Dealer's designee as agent member.

CALCULATION OF DIVIDEND PAYMENT. The amount of dividends per share payable (if declared) on each Dividend Payment Date of each Dividend Period of less than one (1) year (or in respect of dividends on another date in connection with a redemption during such Dividend Period) shall be computed by multiplying the Applicable Rate (or the Default Rate) for such Dividend Period (or a portion thereof) by a fraction, the numerator of which will be the number of days in such Dividend Period (or portion thereof) that such share was Outstanding and for which the Applicable Rate or the Default Rate was applicable and the denominator of which will be 360 for each Series, multiplying the amount so obtained by $25,000, and rounding the amount so obtained to the nearest cent. During any Dividend Period of one (1) year or more, the amount of dividends per share payable on any Dividend Payment Date (or in respect of dividends on another date in connection with a redemption during such Dividend Period) shall be computed as described in the preceding sentence, except that it will be determined on the basis of a year consisting of twelve 30-day months.

Dividends on Preferred Shares will accumulate from the date of their original issue, which is , 2003. For each dividend payment period after the initial rate period, the dividend will be the dividend rate determined at auction. The dividend rate that results from an auction will not be greater than the maximum applicable rate described below. Prior to each auction, Broker-Dealers will notify holders of the term of the next succeeding dividend period as soon as practicable after the Broker-Dealers have been so advised by the Fund. After each auction, on the auction date, Broker-Dealers will notify holders of the applicable rate for the next succeeding dividend period and of the auction date of the next succeeding auction.

The maximum applicable rate for any standard rate period will be the applicable percentage (set forth in the table below) of the applicable "AA" Financial Commercial Paper Rate. In the case of a special rate period, the maximum applicable rate will be specified by the Fund in the notice of the special rate period for such dividend payment period. The applicable percentage will be determined based on the lower

33

of the credit rating or ratings assigned to the Preferred Shares by Fitch and Moody's. If Fitch or Moody's or both do not make such rating available, the rate will be determined by reference to equivalent ratings issued by a substitute rating agency.

CREDIT RATINGS FOR PREFERRED SHARES      APPLICABLE
------------------------------------     PERCENTAGE:
     MOODY'S             FITCH         NO NOTIFICATION
-----------------   ----------------   ---------------
 Aa3 or higher      AA- or higher           150%
   A3 to A1            A- to A+             200%
 Baa3 to Baa1        BBB- to BBB+           250%
  Below Baa3          Below BBB-            275%

On each dividend payment date, the Fund is required to deposit with the paying agent sufficient funds for the payment of declared dividends. The failure to make such deposit will not result in the cancellation of any auction. The Fund does not intend to establish any reserves for the payment of dividends.

DEFAULT PERIOD. Subject to the applicable cure provisions, a "Default Period" with respect to a particular Series will commence on any date the Fund fails to deposit irrevocably in trust in same-day funds, with the Paying Agent by 12:00 noon, New York City time, (A) the full amount of any declared dividend on that Series payable on the Dividend Payment Date (a "Dividend Default") or (B) the full amount of any redemption price (the "Redemption Price") payable on the date fixed for redemption (the "Redemption Date") (a "Redemption Default") and together with a Dividend Default, hereinafter referred to as "Default").

Subject to the applicable cure provisions, a Default Period with respect to a Dividend Default or a Redemption Default shall end on the Business Day on which, by 12:00 noon, New York City time, all unpaid dividends and any unpaid Redemption Price shall have been deposited irrevocably in trust in same-day funds with the Paying Agent. In the case of a Dividend Default, the Applicable Rate for each Dividend Period commencing during a Default Period will be equal to the Default Rate, and each subsequent Dividend Period commencing after the beginning of a Default Period shall be a Standard Dividend Period; provided, however, that the commencement of a Default Period will not by itself cause the commencement of a new Dividend Period. No Auction shall be held during a Default Period applicable to that Series.

No Default Period with respect to a Dividend Default or Redemption Default shall be deemed to commence if the amount of any dividend or any Redemption Price due (if such default is not solely due to the willful failure of the Fund) is deposited irrevocably in trust, in same-day funds with the Paying Agent by 12:00 noon, New York City time within three Business Days after the applicable Dividend Payment Date or Redemption Date, together with an amount equal to the Default Rate applied to the amount of such non-payment based on the actual number of days comprising such period divided by 360 for each Series. The Default Rate shall be equal to the Reference Rate multiplied by three (3).

RESTRICTIONS ON DIVIDEND, REDEMPTION AND OTHER PAYMENTS. Under the 1940 Act, the Fund may not (i) declare any dividend with respect to the Preferred Shares if, at the time of such declaration (and after giving effect thereto), asset coverage with respect to the Fund's Borrowings that are senior securities representing indebtedness (as defined in the 1940 Act) would be less than 200% (or such other percentage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities representing indebtedness of a closed-end investment company as a condition of declaring dividends on its preferred shares) or (ii) declare any other distribution on the Preferred Shares or purchase or redeem Preferred Shares if at the time of the declaration (and after giving effect thereto), asset coverage with respect to the Fund's senior securities representing indebtedness would be less than 300% (or such other percentage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities representing indebtedness of a closed-end investment company as a condition of declaring distributions, purchases or redemptions of its shares of beneficial interest). "Senior securities representing indebtedness" generally means any bond, debenture, note or similar obligation or instrument constituting a security (other than shares of beneficial interest) and

34

evidencing indebtedness and could include the Fund's obligations under any Borrowings. For purposes of determining asset coverage for senior securities representing indebtedness in connection with the payment of dividends or other distributions on or purchases or redemptions of stock, the term "senior security" does not include any promissory note or other evidence of indebtedness issued in consideration of any loan, extension or renewal thereof, made by a bank or other person and privately arranged, and not intended to be publicly distributed. The term "senior security" also does not include any such promissory note or other evidence of indebtedness in any case where such a loan is for temporary purposes only and in an amount not exceeding 5% of the value of the total assets of the Fund at the time when the loan is made; a loan is presumed under the 1940 Act to be for temporary purposes if it is repaid within 60 days and is not extended or renewed; otherwise it is presumed not to be for temporary purposes. For purposes of determining whether the 200% and 300% asset coverage requirements described above apply in connection with dividends or distributions on or purchases or redemptions of Preferred Shares, such asset coverages may be calculated on the basis of values calculated as of a time within 48 hours (not including Sundays or holidays) next preceding the time of the applicable determination.

In addition, a declaration of a dividend or other distribution on or purchase or redemption of Preferred Shares may be prohibited (i) at any time when an event of default under any Borrowings has occurred and is continuing; or
(ii) after giving effect to such declaration, the Fund would not have eligible portfolio holdings with an aggregated discounted value at least equal to any asset coverage requirements associated with such Borrowings; or (iii) the Fund has not redeemed the full amount of Borrowings, if any, required to be redeemed by any provision for mandatory redemption.

While any of the Preferred Shares are outstanding, the Fund generally may not declare, pay or set apart for payment, any dividend or other distribution in respect of its common shares (other than in additional common shares or rights to purchase common shares) or repurchase any of its common shares (except by conversion into or exchange for shares of the Fund ranking junior to the Preferred Shares as to the payment of dividends and the distribution of assets upon liquidation) unless each of the following conditions has been satisfied:

- In the case of Moody's coverage requirements, immediately after such transaction, the aggregate Discounted Value (i.e., the aggregate value of the Fund's portfolio discounted according to Moody's criteria) would be equal to or greater than the Preferred Shares Basic Maintenance Amount (i.e., the amount necessary to pay all outstanding obligations of the Fund with respect to the Preferred Shares, any preferred stock outstanding expenses for the next 90 days and any other liabilities of the Fund) (see "Rating Agency Guidelines" below);

- In the case of Fitch's coverage requirements, immediately after such transaction, the aggregate Discounted Value (i.e., the aggregate value of the Fund's portfolio discounted according to Fitch criteria) would be equal to or greater than the Preferred Shares Basic Maintenance Amount;

- Immediately after such transaction, the 1940 Act Preferred Shares Asset Coverage (as defined in this Prospectus under "Rating Agency Guidelines" below) is met;

- Full cumulative dividends on the Preferred Shares due on or prior to the date of the transaction have been declared and paid or have been declared and sufficient funds for the payment thereof deposited with the auction agent; and

- The Fund has redeemed the full number of Preferred Shares required to be redeemed by any provision for mandatory redemption contained in the Statement.

The Fund generally will not declare, pay or set apart for payment any dividend on any shares of the Fund ranking, as to the payment of dividends, on a parity with Preferred Shares unless the Fund has declared and paid or contemporaneously declares and pays full cumulative dividends on the Preferred Shares through its most recent dividend payment date. However, if the Fund has not paid dividends in full on the Preferred Shares through the most recent dividend payment date or upon any shares of the Fund ranking, as to the payment of dividends, on a parity with Preferred Shares through their most recent respective dividend payment dates, the amount of dividends declared per share on Preferred Shares and

35

such other class or series of shares will in all cases bear to each other the same ratio that accumulated dividends per share on the Preferred Shares and such other class or series of shares bear to each other.

DESIGNATION OF SPECIAL RATE PERIODS. The Fund may, in certain situations, declare a special rate period. Prior to declaring a special rate period, the Fund will give notice (a "notice of special rate period") to the auction agent and to each Broker-Dealer. The notice will state that the next succeeding rate period for the Preferred Shares will be a number of days as specified in such notice. The Fund may not designate a special rate period unless sufficient clearing bids were made in the most recent auction (that is, in general, the number of shares subject to buy orders by potential holders is at least equal to the number of shares subject to sell orders by existing holders). In addition, full cumulative dividends, any amounts due with respect to mandatory redemptions and any additional dividends payable prior to such date must be paid in full or deposited with the auction agent. Prior to declaring a special rate period, the Fund will confirm that, as of the auction date next preceding the first day of such special rate period, it has eligible assets with an aggregate discounted value at least equal to the Preferred Shares Basic Maintenance Amount (as defined below). The Fund also intends to consult with the Broker-Dealers and provide notice to each rating agency which is then rating the Preferred Shares and so requires. A notice of special rate period also will specify whether the Preferred Shares will be subject to optional redemption during such special rate period and, if so, the redemption premium, if any, required to be paid by the Fund in connection with such optional redemption.

If the Fund proposes to designate any Special Dividend Period, not fewer than seven Business Days (or two Business Days in the event the duration of the Dividend Period prior to such Special Dividend Period is fewer than eight days) nor more than 30 Business Days prior to the first day of such Special Dividend Period, notice shall be (i) made by press release and (ii) communicated by the Fund by telephonic or other means to the Auction Agent and each Broker-Dealer and the Rating Agency and confirmed in writing promptly thereafter. Each such notice shall state (A) that the Fund proposes to exercise its option to designate a succeeding Special Dividend Period, specifying the first and last days thereof and the Maximum Rate for such Special Dividend Period and (B) that the Fund will by 3:00 P.M., New York City time, on the second Business Day next preceding the first day of such Special Dividend Period, notify the Auction Agent, who will promptly notify the Broker-Dealers, of either (x) its determination, subject to certain conditions, to proceed with such Special Dividend Period, subject to the terms of any Specific Redemption Provisions, or
(y) its determination not to proceed with such Special Dividend Period, in which latter event the succeeding Dividend Period shall be a Standard Dividend Period. No later than 3:00 P.M., New York City time, on the second Business Day next preceding the first day of any proposed Special Dividend Period, the Fund shall deliver to the Auction Agent, who will promptly deliver to the Broker-Dealers and Existing Holders, either:

(i) a notice stating (A) that the Fund has determined to designate the next succeeding Dividend Period as a Special Dividend Period, specifying the first and last days thereof and (B) the terms of any Specific Redemption Provisions; or

(ii) a notice stating that the Fund has determined not to exercise its option to designate a Special Dividend Period.

If the Fund fails to deliver either such notice with respect to any designation of any proposed Special Dividend Period to the Auction Agent by 3:00 P.M., New York City time, on the second Business Day next preceding the first day of such proposed Special Dividend Period, the Fund shall be deemed to have delivered a notice to the Auction Agent with respect to such Dividend Period to the effect set forth in clause (ii) above, thereby resulting in a Standard Dividend Period.

In addition, the Board of Trustees may amend the rate periods of one or more Series of Preferred Shares on a permanent basis.

VOTING RIGHTS

Except as noted below, the Fund's common shares and Preferred Shares have equal voting rights of one vote per share. In elections of trustees, the holders of outstanding Preferred Shares vote, as a class, to

36

elect two trustees. The Board of Trustees will determine to which class or classes the trustees elected by the holders of Preferred Shares will be assigned and the holders of the Preferred Shares shall only be entitled to elect the trustees so designated as being elected by the holders of the Preferred Shares when their term shall have expired and such trustees appointed by the holders of Preferred Shares will be allocated as evenly as possible among the classes of trustees. The holders of the common shares and holders of Preferred Shares vote together as a single class to elect the remaining trustees. In addition, during any period ("Voting Period") in which the Fund has not paid dividends on the Preferred Shares in an amount equal to two full years' dividends, the holders of Preferred Shares, voting as a single class, are entitled to elect (in addition to the two trustees set forth above) the smallest number of additional trustees as is necessary to ensure that a majority of the trustees has been elected by the holders of Preferred Shares. The holders of Preferred Shares will continue to have these rights until all dividends in arrears have been paid or otherwise provided for.

In an instance when the Fund has not paid dividends as set forth in the immediately preceding paragraph, the terms of office of all persons who are trustees of the Fund at the time of the commencement of a Voting Period will continue, notwithstanding the election by the holders of the Preferred Shares of the number of trustees that such holders are entitled to elect. The persons elected by the holders of the Preferred Shares, together with the incumbent trustees, will constitute the duly elected trustees of the Fund. When all dividends in arrears on the Preferred Shares have been paid or provided for, the terms of office of the additional trustees elected by the holders of the Preferred Shares will terminate.

So long as any of the Preferred Shares are outstanding, the Fund will not, without the affirmative vote of the holders of a majority of the outstanding Preferred Shares, (i) institute any proceedings to be adjudicated bankrupt or insolvent, or consent to the institution of bankruptcy or insolvency proceedings against it, or file a petition seeking or consenting to reorganization or relief under any applicable federal or state law relating to bankruptcy or insolvency, or consent to the appointment of a receiver, liquidator, assignee, trustee, sequestrator (or other similar official) of the Fund or a substantial part of its property, or make any assignment for the benefit of creditors, or, except as may be required by applicable law, admit in writing its inability to pay its debts generally as they become due or take any corporate action in furtherance of any such action; (ii) create, incur or suffer to exist, or agree to create, incur or suffer to exist, or consent to cause or permit in the future (upon the happening of a contingency or otherwise) the creation, incurrence or existence of any material lien, mortgage, pledge, charge, security interest, security agreement, conditional sale or trust receipt or other material encumbrance of any kind upon any of the Fund's assets as a whole, except (A) liens the validity of which are being contested in good faith by appropriate proceedings, (B) liens for taxes that are not then due and payable or that can be paid thereafter without penalty, (C) liens, pledges, charges, security interests, security agreements or other encumbrances arising in connection with any indebtedness senior to the Preferred Shares, or arising in connection with any futures contracts or options thereon, interest rate swap or cap transactions, forward rate transactions, put or call options or other similar transactions, (D) liens, pledges, charges, security interests, security agreements or other encumbrances arising in connection with any indebtedness permitted under clause (iii) below and (E) liens to secure payment for services rendered including, without limitation, services rendered by the Fund's Paying Agent and the auction agent; or (iii) create, authorize, issue, incur or suffer to exist any indebtedness for borrowed money or any direct or indirect guarantee of such indebtedness for borrowed money, except the Fund may borrow as may be permitted by the Fund's investment restrictions; provided, however, that transfers of assets by the Fund subject to an obligation to repurchase will not be deemed to be indebtedness for purposes of this provision to the extent that after any such transaction the Fund has eligible assets with an aggregate discounted value at least equal to the Preferred Shares Basic Maintenance Amount as of the immediately preceding valuation date.

In addition, the affirmative vote of the holders of a majority, as defined in the 1940 Act, of the outstanding preferred shares, including the Preferred Shares, is required to approve any plan of reorganization (as such term is used in the 1940 Act) adversely affecting such shares or any action requiring a vote of security holders of the Fund under Section 13(a) of the 1940 Act.

37

The affirmative vote of the holders of a majority, as defined in the 1940 Act, of the outstanding Preferred Shares of any series, voting separately from any other series, shall be required with respect to any matter that materially and adversely affects the rights, preferences, or powers of that series in a manner different from that of other series or classes of the Fund's shares of beneficial interest. For purposes of the foregoing, no matter will be deemed to adversely affect any right, preference or power unless such matter (i) alters or abolishes any preferential right of such series; (ii) creates, alters or abolishes any right in respect of redemption of such series; or (iii) creates or alters (other than to abolish) any restriction on transfers applicable to such series. The vote of holders of any series described in this paragraph will in each case be in addition to a separate vote of the requisite percentage of common shares and/or preferred shares necessary to authorize the action in question.

The common shares and the Preferred Shares also will vote separately to the extent otherwise required under Delaware law or the 1940 Act as in effect from time to time. The class votes of holders of Preferred Shares described above will in each case be in addition to any separate vote of the requisite percentage of common shares and Preferred Shares, voting together as a single class, necessary to authorize the action in question.

For purpose of any right of the holders of Preferred Shares to vote on any matter, whether the right is created by the Agreement and Declaration of Trust, by statute or otherwise, a holder of a Preferred Share is not entitled to vote and the Preferred Shares will not be deemed to be outstanding for the purpose of voting or determining the number of Preferred Shares required to constitute a quorum, if prior to or concurrently with a determination of the Preferred Shares entitled to vote or of Preferred Shares deemed outstanding for quorum purposes, as the case may be, a notice of redemption was given in respect of those Preferred Shares and sufficient Deposit Securities for the redemption of those Preferred Shares were deposited.

RATING AGENCY GUIDELINES

The Fund is required under Fitch and Moody's guidelines to maintain assets having in the aggregate a discounted value at least equal to the Preferred Shares Basic Maintenance Amount (as defined below). Fitch and Moody's have each established separate guidelines for determining discounted value. To the extent any particular portfolio holding does not satisfy the applicable rating agency's guidelines, all or a portion of such holding's value will not be included in the calculation of discounted value (as defined by the rating agency). The Fitch and Moody's guidelines also impose certain diversification requirements on the Fund's overall portfolio. "Preferred Shares Basic Maintenance Amount" means as of any Valuation Date as the dollar amount equal to the sum of:

(i) (A) the sum of the products resulting from multiplying the number of Outstanding Preferred Shares on such date by the Liquidation Preference (and redemption premium, if any) per share; (B) the aggregate amount of dividends that will have accumulated at the Applicable Rate (whether or not earned or declared) for each Outstanding Preferred Shares to the 30th day after such Valuation Date; (C) the amount of anticipated Fund non-interest expenses for the 90 days subsequent to such Valuation Date; (D) the amount of the current outstanding balances of any indebtedness which is senior to the Preferred Shares plus interest actually accrued together with 30 days additional interest on the current outstanding balances calculated at the current rate; and (E) any other current liabilities payable during the 30 days subsequent to such Valuation Date, including, without limitation, indebtedness due within one year and any redemption premium due with respect to Preferred Shares for which a Notice of Redemption has been given, as of such Valuation Date, to the extent not reflected in any of
(i)(A) through (i)(D); less

(ii) the sum of any cash plus the value of any of the Fund's assets irrevocably deposited by the Trust for the payment of any (i)(B) through
(i)(E) ('value,' for purposes of this clause (ii), means the Discounted Value of the security, except that if the security matures prior to the relevant redemption payment date and is either fully guaranteed by the U.S. Government or is rated at least P-1 by Moody's and A-1 by S&P, it will be valued at its face value).

38

The Fund also is required to maintain, with respect to the Preferred Shares, as of the last business day of each month in which Preferred Shares are outstanding, asset coverage of at least 200% (or such other asset coverage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities that are shares of a closed-end investment company as a condition of declaring dividends on its Common Shares) ("1940 Act Preferred Shares Asset Coverage"). Based on the Fund's assets and liabilities as of July 15, 2003, and assuming the issuance of all Preferred Shares offered hereby and the use of the proceeds as intended, the 1940 Act Preferred Shares Asset Coverage with respect to Preferred Shares would be:

Value of Fund assets less liabilities not constituting             $1,293,605,715
senior securities                                              =   --------------    =   301%
------------------------------------------------------------         $430,000,000
Senior securities representing indebtedness plus liquidation
value of the Preferred Shares

If the Fund does not timely cure a failure to maintain (1) a discounted value of its portfolio equal to the Preferred Shares Basic Maintenance Amount in accordance with the requirements of the rating agency or agencies then rating the Preferred Shares, or (2) the 1940 Act Preferred Shares Asset Coverage, the Fund will be required to redeem Preferred Shares as described below under "-- Redemption."

The Fund may, but is not required to, adopt any modifications to the guidelines that may hereafter be established by Fitch or Moody's. Failure to adopt any such modifications, however, may result in a change or a withdrawal of the ratings altogether. In addition, any rating agency providing a rating for the Preferred Shares may, at any time, change or withdraw any such rating. The Board of Trustees may, without shareholder approval, amend, alter, add to or repeal any or all of the definitions and related provisions that have been adopted by the Fund pursuant to the rating agency guidelines in the event the Fund receives written confirmation from Fitch or Moody's, or both, as appropriate, that any such change would not impair the ratings then assigned by Fitch or Moody's (or both, as the case may be) to the Preferred Shares.

The Board of Trustees may amend the definition of Maximum Rate to increase the percentage amount by which the Reference Rate is multiplied to determine the Maximum Rate without the vote or consent of the holders of Preferred Shares, including each series, or any other shareholder of the Fund, but only with confirmation from each rating agency, and after consultation with the Broker-Dealers, provided that immediately following any such increase the Fund could meet the Preferred Shares Basic Maintenance Amount test.

The Board of Trustees may amend the definition of Standard Dividend Period to change the Dividend Period with respect to one or more Series without the vote or consent of the holders of the Preferred Shares.

As described by Fitch and Moody's, the Preferred Shares rating is an assessment of the capacity and willingness of the Fund to pay obligations with respect to the Preferred Shares. The ratings on the Preferred Shares are not recommendations to purchase, hold or sell the Preferred Shares, inasmuch as the ratings do not comment as to market price or suitability for a particular investor. The rating agency guidelines also do not address the likelihood that an owner of the Preferred Shares will be able to sell such shares in an auction or otherwise. The ratings are based on current information furnished to Fitch and Moody's by the Fund and Calamos and information obtained from other sources. The ratings may be changed, suspended or withdrawn as a result of changes in, or the unavailability of, such information.

The rating agency guidelines will apply to the Preferred Shares only so long as such rating agency is rating these shares. The Fund will pay fees to Fitch and Moody's for rating the Preferred Shares.

The Fund shall deliver to the Auction Agent and each Rating Agency a certificate which sets forth a determination regarding the Preferred Shares Basic Maintenance Amount (a "Preferred Shares Basic Maintenance Certificate") as of (A) within seven Business Days after the Date of Original Issue, (B) the last Valuation Date of each month, (C) any date requested by any Rating Agency, (D) a Business Day on or before any Asset Coverage Cure Date relating to the Fund's cure of a failure to meet the Preferred

39

Shares Basic Maintenance Amount Test, (E) any day that common shares or Preferred Shares are redeemed, (F) any day the Fitch Eligible Assets have an aggregate discounted value less than or equal to 110% of the Preferred Shares Basic Maintenance Amount and (G) weekly if Moody's Eligible Assets have an aggregate discounted value less than 1.30 times the Preferred Shares Basic Maintenance Amount. Such Preferred Shares Basic Maintenance Certificate shall be delivered in the case of (A) above on or before the seventh Business Day after the Date of Original Issue and in the case of B-G above on or before the seventh Business Day after the relevant Valuation Date or Asset Coverage Cure Date.

The Fund shall deliver to the Auction Agent and each Rating Agency a certificate which sets forth a determination regarding the 1940 Act Asset Coverage (a "1940 Act Preferred Shares Asset Coverage Certificate") (i) as of the Date of Original Issue, and (ii) as of (A) the last Valuation Date of each quarter thereafter, and (B) as of a Business Day on or before any Asset Coverage Cure Date relating to the failure to meet the 1940 Act Preferred Shares Asset Coverage. Such 1940 Act Preferred Shares Asset Coverage Certificate shall be delivered in the case of clause (i) on or before the seventh Business Day after the Date of Original Issue and in the case of clause (ii) on or before the seventh Business Day after the relevant Valuation Date or the Asset Coverage Cure Date. The certificates required by the Statement may be combined into a single certificate.

Within ten Business Days of the Date of Original Issue, the Fund shall deliver to the Auction Agent and each Rating Agency a letter prepared by the Fund's independent auditors (an "Auditor's Certificate") regarding the accuracy of the calculations made by the Trust in the Preferred Shares Basic Maintenance Certificate and the 1940 Act Preferred Shares Asset Coverage Certificate required to be delivered by the Trust on or before the seventh Business Day after the Date of Original Issue. Within ten Business Days after delivery of the Preferred Shares Basic Maintenance Certificate and the 1940 Act Preferred Shares Asset Coverage Certificate relating to the last Valuation Date of each fiscal quarter of the Fund, the Fund will deliver to the Auction Agent and each Rating Agency an Auditor's Certificate regarding the accuracy of the calculations made by the Fund in such Certificates and in one other Preferred Shares Basic Maintenance Certificate randomly selected by the Fund's independent auditors during such fiscal quarter. In addition, the Fund will deliver to the persons specified in the preceding sentence an Auditor's Certificate regarding the accuracy of the calculations made by the Fund on each Preferred Shares Basic Maintenance Certificate and 1940 Act Preferred Shares Asset Coverage Certificate delivered in relation to an Asset Coverage Cure Date within ten days after the relevant Asset Coverage Cure Date. If an Auditor's Certificate shows that an error was made in any such report, the calculation or determination made by the Fund's independent auditors will be conclusive and binding on the Fund.

REDEMPTION

MANDATORY REDEMPTION. If the Fund does not timely cure a failure to (1) maintain a discounted value of its portfolio equal to the Preferred Shares Basic Maintenance Amount, (2) maintain the 1940 Act Preferred Shares Asset Coverage, or (3) file certain certificates related to asset coverage on time, the Preferred Shares will be subject to mandatory redemption out of funds legally available therefor in accordance with the Statement and applicable law, at the redemption price of $25,000 per share plus an amount equal to accumulated but unpaid dividends thereon (whether or not earned or declared) to (but not including) the date fixed for redemption plus (in the case of a dividend period of more than one year) a redemption premium, if any, determined by the Board of Trustees after consultation with the Broker-Dealers and set forth in any applicable specific redemption provisions. Any such redemption will be limited to the number of Preferred Shares necessary to restore the required discounted value or the 1940 Act Preferred Shares Asset Coverage, as the case may be.

In determining the number of Preferred Shares required to be redeemed in accordance with the foregoing, the Fund will allocate the number of shares required to be redeemed to satisfy the Preferred Shares Basic Maintenance Amount or the 1940 Act Preferred Shares Asset Coverage, as the case may be, pro rata among the Preferred Shares of the Fund and any other preferred shares of the Fund, subject to redemption or retirement. If fewer than all outstanding shares of any series are, as a result, to be

40

redeemed, the Fund may redeem such shares pro rata, by lot or other method that it deems fair and equitable.

OPTIONAL REDEMPTION. To the extent permitted under the 1940 Act and Delaware law, the Fund at its option may without the consent of the holders of Preferred Shares, redeem Preferred Shares having a dividend period of one year or less, in whole or in part, on the business day after the last day of such dividend period upon not less than 15 calendar days and not more than 40 calendar days prior notice. The optional redemption price per share will be $25,000 per share, plus an amount equal to accumulated but unpaid dividends thereon (whether or not earned or declared) to the date fixed for redemption. The redemption price for Preferred Shares having a dividend period of more than one year may include the payment of redemption premiums to the extent required under any applicable specific redemption provisions. The Fund will not make any optional redemption unless, after giving effect thereto, (i) the Fund has available certain deposit securities with maturities or tender dates not later than the day preceding the applicable redemption date and having a value not less than the amount (including any applicable premium) due to holders of the Preferred Shares by reason of the redemption of the Preferred Shares on such date fixed for the redemption and (ii) the Fund has eligible assets with an aggregate discounted value at least equal to the Preferred Shares Basic Maintenance Amount.

Notwithstanding the foregoing, Preferred Shares may not be redeemed at the option of the Fund unless all dividends in arrears on the outstanding Preferred Shares, and any other outstanding preferred shares, have been or are being contemporaneously paid or set aside for payment. This would not prevent the lawful purchase or exchange offer for Preferred Shares made on the same terms to holders of all outstanding preferred shares.

LIQUIDATION

Subject to the rights of holders of any series or class or classes of shares ranking on a parity with Preferred Shares with respect to the distribution of assets upon liquidation of the Fund, upon a liquidation of the Fund, whether voluntary or involuntary, the holders of Preferred Shares then outstanding will be entitled to receive and to be paid out of the assets of the Fund available for distribution to its shareholders, after disposition of any claims of creditors, but before any payment or distribution is made on the common shares, an amount equal to the liquidation preference with respect to such shares ($25,000 per share), plus an amount equal to all dividends thereon (whether or not earned or declared by the Fund, but excluding the interest thereon) accumulated but unpaid to and including the date of final distribution in same-day funds in connection with the liquidation of the Fund. After the payment to the holders of Preferred Shares of the full preferential amounts provided for as described herein, the holders of Preferred Shares as such will have no right or claim to any of the remaining assets of the Fund.

If, upon any such liquidation, dissolution or winding up of the affairs of the Fund, whether voluntary or involuntary, the assets of the Fund available for distribution among the holders of all outstanding preferred shares, including each Series, shall be insufficient to permit the payment in full to such holders of the amounts to which they are entitled, then such available assets shall be distributed among the holders of all outstanding preferred shares, including each Series, ratably in any such distribution of assets according to the respective amounts which would be payable on all such shares if all amounts thereon were paid in full. Unless and until payment in full has been made to the holders of all outstanding preferred shares, including each Series, of the liquidation distributions to which they are entitled, no dividends or distributions will be made to holders of common shares or any shares of beneficial interest of the Fund ranking junior to the preferred shares as to liquidation.

Neither the sale of all or substantially all the property or business of the Fund, nor the merger or consolidation of the Fund into or with any other entity nor the merger or consolidation of any other entity into or with the Fund, will be a liquidation, whether voluntary or involuntary, for the purposes of the foregoing paragraph.

41

THE AUCTION

GENERAL

The Statement provides that, except as otherwise described in this prospectus, the applicable rate for the Preferred Shares for each rate period after the initial rate period will be the rate that results from an auction conducted as set forth in the Statement and summarized below. In such an auction, persons determine to hold or offer to sell or, based on dividend rates bid by them, offer to purchase or sell Preferred Shares. See the Statement included in the Statement of Additional Information for a more complete description of the auction process.

AUCTION AGENCY AGREEMENT. The Fund will enter into an auction agency agreement with the auction agent (currently, The Bank of New York) which provides, among other things, that the auction agent will follow the auction procedures to determine the applicable rate for Preferred Shares, so long as the applicable rate for Preferred Shares is to be based on the results of an auction.

The auction agent may terminate the auction agency agreement upon notice to the Fund no earlier than 60 days after the delivery of such notice. If the auction agent should resign, the Fund will use its best efforts to enter into an agreement with a successor auction agent containing substantially the same terms and conditions as the auction agency agreement. The Fund may remove the auction agent provided that, prior to such removal, the Fund has entered into such an agreement with a successor auction agent.

BROKER-DEALER AGREEMENTS. Each auction requires the participation of one or more Broker-Dealers. The auction agent will enter into agreements with several Broker-Dealers selected by the Fund, which provide for the participation of those Broker-Dealers in auctions for Preferred Shares.

The auction agent will pay to each Broker-Dealer after each auction from funds provided by the Fund, a service charge at the annual rate of 1/4 of 1% in the case of any auction immediately preceding the dividend period of less than one year, or a percentage agreed to by the Fund and the Broker-Dealer in the case of any auction immediately preceding a dividend period of one year or longer, of the liquidation preference ($25,000 per share) of the Preferred Shares held by that Broker-Dealer's customer upon settlement in an auction.

The Fund may request that the auction agent terminate one or more Broker-Dealer agreements at any time upon five days' notice, provided that at least one Broker-Dealer agreement is in effect after termination of the agreement or agreements.

AUCTION PROCEDURES

On or prior to the submission deadline on each auction date for the Preferred Shares, each customer of a Broker-Dealer who is listed on the records of that Broker-Dealer (or, if applicable, the auction agent) as a beneficial owner of Preferred Shares may submit the following types of orders with respect to shares of such series of Preferred Shares to that Broker-Dealer:

1. Hold Order -- indicating its desire to hold Preferred Shares without regard to the applicable rate for the next rate period.

2. Bid -- indicating its desire to sell shares of such series at $25,000 per share if the applicable rate for shares of such series for the next period is less than the rate or spread specified in the bid.

3. Sell Order -- indicating its desire to sell shares of such series at $25,000 per share without regard to the applicable rate for shares of such series for the next period.

A beneficial owner of Preferred Shares may submit different types of orders to its Broker-Dealer with respect to Preferred Shares then held by the beneficial owner. A beneficial owner that submits a bid to its Broker-Dealer having a rate higher than the maximum applicable rate on the auction date will be treated as having submitted a sell order to its Broker-Dealer. A beneficial owner that fails to submit an order to its Broker-Dealer will ordinarily be deemed to have submitted a hold order to its Broker-Dealer. However, if a beneficial owner fails to submit an order for some or all of its shares to its Broker-Dealer for an auction

42

relating to a rate period of more than 91 days, such beneficial owner will be deemed to have submitted a sell order for such shares to its Broker-Dealer. A sell order constitutes an irrevocable offer to sell the Preferred Shares subject to the sell order. A beneficial owner that offers to become the beneficial owner of additional Preferred Shares is, for the purposes of such offer, a potential holder as discussed below.

A potential holder is either a customer of a Broker-Dealer that is not a beneficial owner of Preferred Shares but that wishes to purchase shares of such series or that is a beneficial owner of shares of such series that wishes to purchase additional shares of such series. A potential holder may submit bids to its Broker-Dealer in which it offers to purchase shares of such series at $25,000 per share if the applicable rate for the next dividend period is not less than the specified rate in such bid. A bid placed by a potential holder specifying a rate higher than the maximum rate for shares of such series on the auction date will not be accepted.

The Broker-Dealers in turn will submit the orders of their respective customers who are beneficial owners and potential holders to the auction agent. They will designate themselves (unless otherwise permitted by the Fund) as existing holders of shares subject to orders submitted or deemed submitted to them by beneficial owners. They will designate themselves as potential holders of shares subject to orders submitted to them by potential beneficial owners. However, neither the Fund nor the auction agent will be responsible for a Broker-Dealer's failure to comply with these procedures. Any order placed with the auction agent by a Broker-Dealer as or on behalf of an existing holder or a potential holder will be treated the same way as an order placed with a Broker-Dealer by a beneficial owner or potential holder. Similarly, any failure by a Broker-Dealer to submit to the auction agent an order for any Preferred Shares held by it or customers who are beneficial owners will be treated as a beneficial owner's failure to submit to its Broker-Dealer an order in respect of Preferred Shares held by it. A Broker-Dealer may also submit orders to the auction agent for its own account as an existing holder or potential holder, provided it is not an affiliate of the Fund.

There are sufficient clearing bids in an auction if the number of shares subject to bids submitted or deemed submitted to the auction agent by Broker-Dealers for potential holders with rates or spreads equal to or lower than the maximum applicable rate is at least equal to the number of shares of such series subject to sell orders and the number of shares of such series subject to bids specifying rates or spreads higher than the maximum applicable rate for such series submitted or deemed submitted to the auction agent by Broker-Dealers for existing holders of such series. If there are sufficient clearing bids, the applicable rate for shares of such series for the next succeeding rate period thereof will be the lowest rate specified in the submitted bids which, taking into account such rate and all lower rates bid by Broker-Dealers as or on behalf of existing holders and potential holders, would result in existing holders and potential holders owning the shares of such series available for purchase in the auction.

If there are not sufficient clearing bids for such series, the applicable rate for the next rate period will be the maximum rate on the auction date. However, if the Fund has declared a special rate period and there are not sufficient clearing bids, the election of a special rate period will not be effective and the applicable rate for the next rate period will be the same as during the current rate period. If there are not sufficient clearing bids, beneficial owners of Preferred Shares that have submitted or are deemed to have submitted sell orders may not be able to sell in the auction all shares subject to such sell orders. If all of the outstanding Preferred Shares are the subject of submitted hold orders, then the rate period following the auction will automatically be the same length as the preceding rate period and the applicable rate for the next rate period will be the seven-day AA Financial Commercial Paper Rate in the case of a standard dividend period for Series M, TU, W, TH and F Preferred Shares and the 30-day AA Financial Commercial Paper Rate for Series A Preferred Shares.

The auction procedures include a pro rata allocation of shares for purchase and sale which may result in an existing holder continuing to hold or selling, or a potential holder purchasing, a number of Preferred Shares that is different than the number of shares specified in its order. To the extent the allocation procedures have that result, Broker-Dealers that have designated themselves as existing holders or potential

43

holders in respect of customer orders will be required to make appropriate pro rata allocations among their respective customers.

Settlement of purchases and sales will be made on the next business day (which is also a dividend payment date) after the auction date through DTC. Purchasers will make payment through their agent members in same-day funds to DTC against delivery to their respective Agent Members. DTC will make payment to the sellers' Agent Members in accordance with DTC's normal procedures, which now provide for payment against delivery by their Agent Members in same-day funds.

The auctions for Series M, TU, W, TH and F Preferred Shares will normally be held every seven days and the auctions for Series A Preferred Shares will normally be held every 28 days unless rate periods for one or more series are amended pursuant to the Statement. Each subsequent rate period will normally begin on the following business day.

If an Auction Date is not a business day because the New York Stock Exchange is closed for business for more than three consecutive business days due to an act of God, natural disaster, act of war, civil or military disturbance, act of terrorism, sabotage, riots or a loss or malfunction of utilities or communications services, or the auction agent is not able to conduct an auction in accordance with the Auction Procedures for any reason, then the Auction Rate for the next dividend period will be the Auction Rate determined on the previous Auction Date.

If a Dividend Payment Date is not a business day because the New York Stock Exchange is closed for business for more than three consecutive business days due to an act of God, natural disaster, act of war, civil or military disturbance, act of terrorism, sabotage, riots or a loss or malfunction of utilities or communications services, or the dividend payable on such date can not be paid for any such reason, then:

- the Dividend Payment Date for the affected dividend period will be the next business day on which the trust and its paying agent, if any, can pay the dividend;

- the affected dividend period will end on the day it otherwise would have ended; and

- the next dividend period will begin and end on the dates on which it otherwise would have begun and ended.

The following is a simplified example of how a typical auction works. Assume that the Fund has 1,000 outstanding Preferred Shares of any series, and three current holders. The three current holders and three potential holders submit orders through Broker-Dealers at the auction:

Current Holder A........  Owns 500 shares, wants to sell  Bid order of 1.5% rate for all
                          all 500 shares if auction rate  500 Shares
                          is less than 1.5%
Current Holder B........  Owns 300 shares, wants to hold  Hold order -- will take the
                                                          auction rate
Current Holder C........  Owns 200 shares, wants to sell  Bid order of 1.3% rate for all
                          all 200 shares if auction rate  200 shares
                          is less than 1.3%
Potential Holder D......  Wants to buy 200 shares         Places order to buy at or
                                                          above 1.4%
Potential Holder E......  Wants to buy 300 shares         Places order to buy at or
                                                          above 1.3%
Potential Holder F......  Wants to buy 200 shares         Places order to buy at or
                                                          above 1.5%

The lowest dividend rate that will result in all 1,000 Preferred Shares continuing to be held is 1.4% (the offer by D). Therefore, the dividend rate will be 1.4%. Current holders B and C will continue to own their shares. Current holder A will sell its shares because A's dividend rate bid was higher than the dividend rate. Potential holder D will buy 200 shares and potential holder E will buy 300 shares because

44

their bid rates were at or below the dividend rate. Potential holder F will not buy any shares because its bid rate was above the dividend rate.

SECONDARY MARKET TRADING AND TRANSFER OF PREFERRED SHARES

The underwriters are not required to make a market in the Preferred Shares. The Broker-Dealers (including the underwriters) may maintain a secondary trading market for outside of auctions, but they are not required to do so. There can be no assurance that a secondary trading market for Preferred Shares will develop or, if it does develop, that it will provide owners with liquidity of investment. Preferred Shares will not be registered on any stock exchange or on the Nasdaq market.

Investors who purchase Preferred Shares in an auction for a special rate period should note that because the dividend rate on such shares will be fixed for the length of that dividend period, the value of such shares may fluctuate in response to the changes in interest rates, and may be more or less than their original cost if sold on the open market in advance of the next auction thereof, depending on market conditions.

A beneficial owner or an existing holder may sell, transfer or otherwise dispose of Preferred Shares only in whole shares and only:

- pursuant to a bid or sell order placed with the auction agent in accordance with the auction procedures;

- to a Broker-Dealer; or

- to such other persons as may be permitted by the Fund; provided, however, that (x) if you hold your Preferred Shares in the name of a Broker-Dealer, a sale or transfer of your Preferred Shares to that Broker-Dealer, or to another customer of that Broker-Dealer, will not be considered a sale or transfer for purposes of the foregoing if that Broker-Dealer remains the existing holder of the Preferred Shares immediately after the transaction and (y) in the case of all transfers, other than through an auction, the Broker-Dealer (or other person, if the Fund permits) receiving the transfer will advise the auction agent of the transfer.

Further description of the auction procedures can be found in the Statement.

DESCRIPTION OF BORROWINGS

The Agreement and Declaration of Trust authorizes the Fund, without prior approval of holders of common and preferred shares, including Preferred Shares, to borrow money. In this connection, the Fund may issue notes or other evidence of indebtedness (including bank borrowings or commercial paper) and may secure any such Borrowings by mortgaging, pledging or otherwise subjecting as security the Fund's assets. In connection with such borrowing, the Fund may be required to maintain minimum average balances with the lender or to pay a commitment or other fee to maintain a line of credit. Any such requirements will increase the cost of borrowing over the stated interest rate.

LIMITATIONS. Under the requirements of the 1940 Act, the Fund, immediately after issuing any Borrowings that are senior securities representing indebtedness (as defined in the 1940 Act), must have an asset coverage of at least 300%. With respect to any such Borrowings, asset coverage means the ratio which the value of the total assets of the Fund, less all liabilities and indebtedness not represented by senior securities, bears to the aggregate amount of any such Borrowings that are senior securities representing indebtedness, issued by the Fund. Certain types of Borrowings may also result in the Fund being subject to covenants in credit agreements relating to asset coverages or portfolio composition or otherwise. In addition, the Fund may be subject to certain restrictions imposed by guidelines of one or more rating agencies which may issue ratings for commercial paper or notes issued by the Fund. Such restrictions may be more stringent than those imposed by the 1940 Act.

45

DISTRIBUTION PREFERENCE. The rights of lenders to the Fund to receive interest on and repayment of principal of any such Borrowings will be senior to those of the Preferred Shares shareholders, and the terms of any such Borrowings may contain provisions which limit certain activities of the Fund, including the payment of dividends to Preferred Shares shareholders in certain circumstances.

VOTING RIGHTS. The 1940 Act does (in certain circumstances) grant to the lenders to the Fund certain voting rights in the event of default in the payment of interest on or repayment of principal. In the event that such provisions would impair the Fund's status as a regulated investment company under the Code, the Fund, subject to its ability to liquidate its relatively illiquid portfolio, intends to repay the Borrowings. Any Borrowing will likely be ranked senior or equal to all other existing and future borrowings of the Fund, including Preferred Shares.

The discussion above describes the Board of Trustees' present intention with respect to a possible offering of Borrowings. If the Board of Trustees determines to authorize any of the foregoing, the terms may be the same as, or different from, the terms described above, subject to applicable law and the Fund's Declaration of Trust.

DESCRIPTION OF COMMON SHARES

The Fund is authorized to issue an unlimited number of common shares, without par value. The Board of Trustees is authorized, however, to classify and reclassify any unissued shares into one or more additional classes or series of shares. The Board of Trustees may establish such series or class, including preferred shares, from time to time by setting or changing in any one or more respects the designations, preferences, conversion or other rights, voting powers, restrictions, limitations as to dividends, qualifications or terms or conditions of redemption of such shares and pursuant to such classification or reclassification to increase or decrease the number of authorized shares of any existing class or series. The Board of Trustees, without shareholder approval, is authorized to amend the Agreement and Declaration of Trust and By-laws to reflect the terms of any such class or series.

Common shares, when issued and outstanding, will be fully paid and non-assessable. Common shareholders are entitled to share pro rata in the net assets of the Fund available for distribution to common shareholders upon liquidation of the Fund. Common shareholders are entitled to one vote for each share held.

So long as any Preferred Shares of the Fund are outstanding, holders of common shares will not be entitled to receive any net income of or other distributions from the Fund unless all accumulated dividends on Preferred Shares have been paid, and unless asset coverage (as defined in the 1940 Act) with respect to Preferred Shares would be at least 200% after giving effect to such distributions.

The Fund's common shares are listed on the New York Stock Exchange.

U.S. FEDERAL INCOME TAX MATTERS

The following is a description of certain U.S. federal income tax consequences to a shareholder that acquires, holds and/or disposes of Preferred Shares of the Fund. The discussion reflects applicable tax laws of the United States as of the date of this prospectus, which tax laws may be changed or subject to new interpretations by the courts or the Internal Revenue Service ("IRS") retroactively or prospectively. No attempt is made to present a detailed explanation of U.S. federal income tax concerns affecting the Fund and its shareholders, and the discussion set forth herein does not constitute tax advice. In addition, no attempt is made to present state, local or foreign tax concerns or tax concerns applicable to an investor with a special tax status such as a financial institutional or non-U.S. investors. INVESTORS ARE URGED TO CONSULT THEIR OWN TAX ADVISORS TO DETERMINE THE TAX CONSEQUENCES TO THEM OF INVESTING IN THE FUND.

The Fund intends to elect to be treated, and to qualify each year, as a "regulated investment company" under Subchapter M of the Code, so that it will not pay U.S. federal income tax on income and capital gains timely distributed to shareholders. If the Fund qualifies as a regulated investment company

46

and distributes to its shareholders at least 90% of the sum of (i) its "investment company taxable income" as that term is defined in the Code (which includes, among other things, dividends, taxable interest, the excess of any net short-term capital gains over net long-term capital losses and certain net foreign exchange gains as reduced by certain deductible expenses) without regard to the deduction for dividends paid and (ii) the excess of its gross tax-exempt interest, if any, over certain disallowed deductions, the Fund will be relieved of U.S. federal income tax on any income of the Fund, including long-term capital gains, distributed to shareholders. However, if the Fund retains any investment company taxable income or "net capital gain" (the excess of net long-term capital gain over net short-term capital loss), it will be subject to U.S. federal income tax at regular corporate rates (currently at the maximum rate of 35%) on the amount retained. The Fund intends to distribute at least annually all or substantially all of its investment company taxable income, net tax-exempt interest, and net capital gain. In addition, the Fund will generally be subject to a nondeductible 4% federal excise tax on the portion of its undistributed ordinary income and capital gains if it fails to meet certain distribution requirements with respect to each calendar year. The Fund intends to make distributions in a timely manner and accordingly does not expect to be subject to this excise tax.

If for any taxable year the Fund did not qualify as a regulated investment company for U.S. federal income tax purposes, it would be treated as a U.S. corporation subject to U.S. federal income tax and distributions to its shareholders would not be deducted by the Fund in computing its taxable income. In addition, in the event of a failure to qualify as a regulated investment company, the Fund's distributions, to the extent derived from the Fund's current or accumulated earnings and profits, would generally constitute ordinary dividends, which generally would be eligible for the dividends received deduction available to corporate holders and the reduced rate of taxation for "qualified dividend income" available to noncorporate holders.

It is anticipated that Preferred Shares will constitute stock of the Fund, and thus distributions with respect to Preferred Shares (other than capital gain distributions and distributions in redemption of Preferred Shares subject to
Section 302(b) of the Code) will generally constitute dividends to the extent of the Fund's current or accumulated earnings and profits, as calculated for federal income tax purposes. Such dividends generally will be taxable as ordinary income to holders and a portion of such dividends, if any, may qualify for either the dividends received deduction available to corporations under
Section 243 of the Code or the reduced rate of taxation for "qualified dividend income" available to noncorporate holders under Section 1(h)(11)(B) of the Code. Dividends designated by the Fund as capital gain distributions will be treated as long-term capital gains in the hands of holders regardless of the length of time such holders have held their shares. Distributions in excess of current and accumulated earnings and profits of the Fund are treated first as return of capital to the extent of the shareholder's basis in the Preferred Shares and, thereafter, as capital gain. The IRS currently requires that a regulated investment company that has two or more classes of stock allocate to each such class proportionate amounts of each type of its income (such as ordinary income and capital gains). Accordingly, the Fund intends to designate distributions made with respect to Preferred Shares as capital gain distributions in proportion to the Preferred Shares' share of total dividends paid during the year. See "U.S. Federal Income Tax Matters" in the Statement of Additional Information.

If the Fund retains any net capital gain, the Fund may designate the retained amount as undistributed capital gains in a notice to shareholders who, if subject to U.S. federal income tax on long-term capital gains, (i) will be required to include in income as long-term capital gain, their proportionate share of such undistributed amount and (ii) will be entitled to credit their proportionate share of the tax paid by the Fund on the undistributed amount against their U.S. federal income tax liabilities, if any, and to claim refunds to the extent the credit exceeds such liabilities. If such an event occurs, the tax basis of shares owned by a shareholder of the Fund will for U.S. federal income tax purposes, generally be increased by the difference between the amount of undistributed net capital gain included in the shareholder's gross income and the tax deemed to have been paid by the shareholders.

Sales and other dispositions of the Preferred Shares are taxable events for shareholders that are subject to federal income tax. Shareholders should consult their own tax advisors with reference to their

47

individual circumstances to determine whether any particular transaction in the Preferred Shares is properly treated as a sale for tax purposes, as the following discussion assumes, and the tax treatment of any gains or losses recognized in such transactions. Any loss realized by a shareholder upon the sale or other disposition of shares with a tax holding period of six months or less will be treated as a long-term capital loss to the extent of any amounts treated as distributions of long-term capital gain with respect to such shares. Losses on sales or other dispositions of shares may be disallowed under the "wash sale" rules in the event of other investments in the Fund (including those made pursuant to reinvestment of dividends) within a period of 61 days beginning 30 days before and ending 30 days after a sale or other disposition of shares. In such a case, the disallowed portion of any loss generally would be included in the U.S. federal tax basis of the shares acquired in the other investments.

The Fund is required in certain circumstances to backup withhold at a rate of 28% on reportable payments including dividends, capital gain distributions and proceeds of sales or other dispositions of the Preferred Shares paid to certain holders of the Preferred Shares who do not furnish the Fund with their correct social security number or other taxpayer identification number and certain other certifications, or who are otherwise subject to backup withholding. Backup withholding is not an additional tax. Any amounts withheld from payments made to a shareholder may be refunded or credited against such shareholder's U.S. federal income tax liability, if any, provided that the required information is furnished to the IRS.

THE FOREGOING IS A GENERAL AND ABBREVIATED SUMMARY OF THE PROVISIONS OF THE CODE AND THE TREASURY REGULATIONS IN EFFECT AS THEY DIRECTLY GOVERN THE TAXATION OF THE FUND AND ITS SHAREHOLDERS. THESE PROVISIONS ARE SUBJECT TO CHANGE BY LEGISLATIVE OR ADMINISTRATIVE ACTION, AND ANY SUCH CHANGE MAY BE RETROACTIVE. A MORE COMPLETE DISCUSSION OF THE TAX RULES APPLICABLE TO THE FUND CAN BE FOUND IN THE STATEMENT OF ADDITIONAL INFORMATION WHICH IS INCORPORATED BY REFERENCE INTO THIS PROSPECTUS. SHAREHOLDERS ARE URGED TO CONSULT THEIR TAX ADVISORS REGARDING SPECIFIC QUESTIONS AS TO U.S. FEDERAL, FOREIGN, STATE, AND LOCAL INCOME OR OTHER TAXES.

48

CERTAIN PROVISIONS OF THE AGREEMENT AND
DECLARATION OF TRUST AND BY-LAWS

The Fund's Agreement and Declaration of Trust includes provisions that could have the effect of limiting the ability of other entities or persons to acquire control of the Fund or to change the composition of its Board of Trustees and could have the effect of depriving shareholders of an opportunity to sell their shares at a premium over prevailing market prices by discouraging a third party from seeking to obtain control of the Fund. These provisions, however, have the advantage of potentially requiring persons seeking control of the Fund to negotiate with its management regarding the price to be paid and facilitating the continuity of the Fund's investment objective and policies. The Board of Trustees of the Fund has considered these provisions and concluded that they are in the best interests of the Fund.

The Board of Trustees is divided into three classes of approximately equal size. The terms of the trustees of the different classes are staggered so that approximately one third of the Board of Trustees is elected by shareholders each year. A trustee may be removed from office with or without cause by a vote of at least a majority of the then trustees if such removal is approved by the holders of at least 75% of the shares entitled to be voted with respect to the election of such trustee and present in person or by proxy at a meeting of shareholders called for such purpose.

In addition, the Agreement and Declaration of Trust requires the affirmative vote of at least 75% of the outstanding shares entitled to vote on the matter for the Trust to merge or consolidate with any other corporation, association, trust or other organization or to sell, lease or exchange all or substantially all of the Fund's assets when and as authorized by a majority of the trustees; unless such action has been approved, adopted or authorized by the affirmative vote of at least 75% of the trustees then in office, in which case, the affirmative vote of a majority of the shares entitled to vote on the matter is required.

In addition, conversion of the Fund to an open-end investment company would require an amendment to the Fund's Agreement and Declaration of Trust. Such an amendment would require the favorable vote of a majority of the then trustees followed by a favorable vote of the holders of at least 75% of the shares entitled to vote on the matter, voting as separate classes or series (or a majority of such shares if the amendment was previously approved by 75% of the trustees). Such a vote also would satisfy a separate requirement in the 1940 Act that the change be approved by the shareholders. The Fund would be required to redeem all of its outstanding Preferred Shares prior to its conversion to an open-end investment company.

Shareholders of an open-end investment company may require the company to redeem their shares of common stock at any time (except in certain circumstances as authorized by or under the 1940 Act) at their net asset value, less such redemption charge, if any, as might be in effect at the time of a redemption. If the Fund is converted to an open-end investment company, it could be required to liquidate portfolio securities to meet requests for redemption, and the common shares would no longer be listed on the New York Stock Exchange. Conversion to an open-end investment company would also require changes in certain of the Fund's investment policies and restrictions, such as those relating to the purchase of illiquid securities.

In addition, the Agreement and Declaration of Trust requires the affirmative vote of consent of a majority of the then trustees followed by the affirmative vote or consent of the holders of at least 75% of the shares of each affected class or series of the Fund, voting separately as a class or series, to approve, adopt or authorize certain transactions with 5% or greater holders of a class or series of shares and their associates, unless the transaction has been approved by at least 75% of the trustees, in which case "a majority of the outstanding voting securities" (as defined in the 1940 Act) entitled to vote shall be required. For purposes of these provisions, a 5% or greater holder of a class or series of shares (a "Principal Shareholder") refers to any person who, whether directly or indirectly and whether alone or together with its affiliates and associates, beneficially owns 5% or more of the outstanding shares of any

49

class or series of shares of beneficial interest of the Fund. The 5% holder transactions subject to these special approval requirements are:

- the merger or consolidation of the Fund or any subsidiary of the Fund with or into any Principal Shareholder;

- the issuance of any securities of the Fund to any Principal Shareholder for cash; or

- the sale, lease or exchange to the Fund or any subsidiary of the Fund, in exchange for securities of the Fund, of any assets of any Principal Shareholder, except assets having an aggregate fair market value of less than $1,000,000, aggregating for purposes of such computation all assets sold, leased or exchanged in any series of similar transactions within a 12-month period.

The Fund may be terminated by the affirmative vote of not less than 75% of the Trustees then in office by written notice to the shareholders.

The Agreement and Declaration of Trust and By-laws provide that the Board of Trustees has the power, to the exclusion of shareholders, to make, alter or repeal any of the By-laws (except for any By-law specified not to be amended or repealed by the Board), subject to the requirements of the 1940 Act. Neither this provision of the Agreement and Declaration of Trust, nor any of the foregoing provisions thereof requiring the affirmative vote of 75% of outstanding shares of the Fund, can be amended or repealed except by the vote of such required number of shares.

The Fund's By-laws generally require that advance notice be given to the Fund in the event a shareholder desires to nominate a person for election to the Board of Trustees or to transact any other business at an annual meeting of shareholders. Notice of any such nomination or business must be delivered to or received at the principal executive offices of the Fund not less than 90 calendar days nor more than 120 calendar days prior to the first anniversary of the date of mailing of the notice for the preceding year's annual meeting (subject to certain exceptions). In the case of the first annual meeting of shareholders, the notice must be given no later than the tenth calendar day following public disclosure as specified in the By-laws of the date of the meeting. Any notice by a shareholder must be accompanied by certain information as provided in the By-laws.

CUSTODIAN, AUCTION AGENT, TRANSFER AGENT,
DIVIDEND PAYING AGENT AND REGISTRAR

The Fund's securities and cash are held under a custodian agreement with The Bank of New York, One Wall Street, New York, New York 10286. The Bank of New York is also the transfer agent, dividend paying agent and registrar for the Fund's common shares and the Preferred Shares. In addition, The Bank of New York is the auction agent with respect to Preferred Shares.

50

UNDERWRITING

Citigroup Global Markets Inc. is acting as representative of the underwriters named below. Subject to the terms and conditions stated in the underwriting agreement dated the date hereof, each underwriter named below has severally agreed to purchase, and the Fund has agreed to sell to such underwriter, the number of Preferred Shares set forth opposite the name of such underwriter.

                                                         NUMBER OF SHARES
                                 -----------------------------------------------------------------
UNDERWRITERS                     SERIES M   SERIES TU   SERIES W   SERIES TH   SERIES F   SERIES A
------------                     --------   ---------   --------   ---------   --------   --------
Citigroup Global Markets
  Inc. ........................
RBC Dain Rauscher Inc. ........
Wachovia Capital Markets,
  LLC..........................
                                  -----       -----      -----       -----      -----      -----
          Total................

The underwriting agreement provides that the obligations of the several underwriters to purchase the shares included in this offering are subject to approval of certain legal matters by counsel and to certain other conditions. The underwriters are obligated to purchase all the Preferred Shares if they purchase any of the shares.

The underwriters propose to offer some of the shares directly to the public at the public offering price set forth on the cover page of this prospectus and some of the shares to certain dealers at the public offering price less a concession not in excess of $ per share. The sales load the Fund will pay of $ per share is equal to % of the initial offering price. The underwriters may allow, and such dealers may reallow, a concession not in excess of $ per share on sales to certain other dealers. If all of the Preferred Shares are not sold at the initial offering price, the representatives may change the public offering price and other selling terms. Investors must pay for any Preferred Shares purchased on or before , 2003.

The Fund anticipates that from time to time the underwriters may act as brokers or dealers in connection with the execution of the Fund's portfolio transactions after they have ceased to be underwriters and, subject to certain restrictions, may act as brokers while they are underwriters. The underwriters are active underwriters of, and dealers in, securities and act as market makers in a number of such securities, and therefore can be expected to engage in portfolio transactions with, and perform services for the Fund, subject to applicable law.

The Fund anticipates that the underwriters or one of their respective affiliates may, from time to time, act in auctions as Broker-Dealers and receive fees as set forth under "The Auction" and in the Statement of Additional Information.

The Fund, and Calamos have agreed to indemnify the underwriters against certain liabilities, including liabilities arising under the Securities Act of 1933, or to contribute to payments the underwriters may be required to make because of any of those liabilities. Insofar as indemnification for liability arising under the Securities Act of 1933 may be permitted to directors, officers and controlling persons of the Fund pursuant to the foregoing provisions, or otherwise, the Fund has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Fund of expenses incurred or paid by a director, officer or controlling person of the Fund in the successful defense of any action, suit or proceeding) is asserted by such director, officer or controlling person in connection with the securities being registered, the Fund will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

The principal business address of Citigroup Global Markets Inc. is 388 Greenwich Street, New York, New York 10013.

51

LEGAL OPINIONS

Bell, Boyd & Lloyd LLC, Chicago, Illinois, serves as counsel to the Fund and to the non-interested Trustees. Vedder, Price, Kaufman & Kammholz, P.C. ("Vedder Price"), Chicago, Illinois, which is serving as special counsel to the Fund in connection with the offering, will pass on the legality of the shares offered hereby. Vedder Price is also counsel to Calamos. Certain matters will be passed upon for the underwriters by Simpson Thacher & Bartlett LLP, New York, New York. Vedder Price and Simpson Thacher & Bartlett LLP may rely on the opinion of Morris, Nichols, Arsht & Tunnell, Wilmington, Delaware on certain matters of Delaware law.

AVAILABLE INFORMATION

The Fund is subject to the informational requirements of the Securities Exchange Act of 1934 and the Investment Company Act and is required to file reports, proxy statements and other information with the Securities and Exchange Commission. These documents can be inspected and copied for a fee at the SEC's public reference room, 450 Fifth Street, N.W., Washington, D.C. 20549, and at the SEC's Chicago Regional Office, Suite 1400, Northwestern Atrium Center, 500 West Madison Street, Chicago, Illinois 60661-2511. Reports, proxy statements, and other information about the Trust can be inspected at the offices of the New York Stock Exchange, 20 Broad Street, New York, New York 10005.

This prospectus does not contain all of the information in the Fund's registration statement, including amendments, exhibits, and schedules. Statements in this prospectus about the contents of any contract or other document are not necessarily complete and in each instance reference is made to the copy of the contract or other document filed as an exhibit to the registration statement, each such statement being qualified in all respects by this reference.

Additional information about the Fund and Preferred Shares can be found in the Fund's registration statement (including amendments, exhibits, and schedules) on Form N-2 filed with the SEC. The SEC maintains a web site (http://www.sec.gov) that contains the Trust's registration statement, other documents incorporated by reference, and other information the Trust has filed electronically with the Commission, including proxy statements and reports filed under the Securities Exchange Act of 1934.

52

TABLE OF CONTENTS FOR STATEMENT OF ADDITIONAL INFORMATION

Use of Proceeds.............................................    S-2
Investment Objective and Policies...........................    S-2
Investment Restrictions.....................................   S-20
Management of the Fund......................................   S-20
Portfolio Transactions......................................   S-28
Net Asset Value.............................................   S-28
Additional Information Concerning The Auctions for Preferred
  Shares....................................................   S-29
Repurchase of Common Shares.................................   S-30
U.S. Federal Income Tax Matters.............................   S-32
Custodian, Transfer Agent, Dividend Paying Agent and
  Registrar.................................................   S-38
Experts.....................................................   S-38
Additional Information......................................   S-38
Financial Statement and Independent Auditors' Report........    F-1
Appendix A -- Statement of Preferences of Preferred
  Shares....................................................    A-1
Appendix B -- Description of Ratings........................    B-1

53




CALAMOS CONVERTIBLE AND HIGH
INCOME FUND

PREFERRED SHARES

3,000 SHARES, SERIES M

3,000 SHARES, SERIES TU

3,000 SHARES, SERIES W

3,000 SHARES, SERIES TH

3,000 SHARES, SERIES F

2,200 SHARES, SERIES A


PROSPECTUS

, 2003


CITIGROUP

RBC CAPITAL MARKETS

WACHOVIA SECURITIES



[RECYCLED BUG]


The information in this Statement of Additional Information is not complete and may be changed. We may not sell these securities until the registration statement filed with the Securities and Exchange Commission is effective. This Statement of Additional Information is not an offer to sell these securities and is not soliciting an offer to buy these securities in any state where the offer or sale is not permitted.

SUBJECT TO COMPLETION, DATED JULY 22, 2003

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

STATEMENT OF ADDITIONAL INFORMATION

Calamos Convertible and High Income Fund (the "Fund") is a recently organized, diversified, closed-end management investment company. This Statement of Additional Information relating to Preferred Shares ("Preferred Shares") does not constitute a prospectus, but should be read in conjunction with the prospectus relating thereto dated ___________ ____, 2003. This Statement of Additional Information does not include all information that a prospective investor should consider before purchasing and investors should obtain and read the Prospectus prior to purchasing such shares. A copy of the prospectus may be obtained without charge by calling 1-800-582-6959. You may also obtain a copy of the prospectus on the Securities and Exchange Commission's web site (http://www.sec.gov). Capitalized terms used but not defined in this Statement of Additional Information have the same meanings ascribed to them in the prospectus or the Statement of Preferences of Preferred Shares (the "Statement") attached as Appendix A.

TABLE OF CONTENTS FOR STATEMENT OF ADDITIONAL INFORMATION

Use of Proceeds..............................................................S-2
Investment Objective and Policies............................................S-2
Investment Restrictions.....................................................S-20
Management of the Fund......................................................S-20
Portfolio Transactions......................................................S-28
Net Asset Value.............................................................S-28
Additional Information Concerning The Auctions for Preferred Shares.........S-29
Repurchase of Common Shares.................................................S-30
U.S. Federal Income Tax Matters.............................................S-32
Custodian, Transfer Agent, Dividend Paying Agent and Registrar..............S-38
Experts  ...................................................................S-38
Additional Information......................................................S-38
Financial Statement and Independent Auditors' Report.........................F-1
Appendix A-- Statement of Preferences of Preferred Shares....................A-1
Appendix B-- Description of Ratings..........................................B-1

This Statement of Additional Information is dated _______, 2003.

S-1

USE OF PROCEEDS

The Fund will invest the net proceeds of the offering in accordance with the Fund's investment objective and policies as stated below. It is presently anticipated that the Fund will be able to invest substantially all of the net proceeds in securities that meet the investment objective and policies within three months after completion of the offering. Pending such investment, the net proceeds may be invested in U.S. government securities high grade, short-term money market instruments. If necessary, the Fund may also purchase, as temporary investments, securities of other open- or closed-end investment companies that invest primarily the types of securities in which the Fund may invest directly.

INVESTMENT OBJECTIVE AND POLICIES

The prospectus presents the investment objective and the principal investment strategies and risks of the Fund. This section supplements the disclosure in the Fund's prospectus and provides additional information on the Fund's investment policies or restrictions. Restrictions or policies stated as a maximum percentage of the Fund's assets are only applied immediately after a portfolio investment to which the policy or restriction is applicable (other than the limitations on borrowing). Accordingly, any later increase or decrease resulting from a change in values, net assets or other circumstances will not be considered in determining whether the investment complies with the Fund's restrictions and policies.

PRIMARY INVESTMENTS

Under normal circumstances, the Fund will invest at least 80% of its managed assets in a diversified portfolio of convertible securities and below investment grade (high yield/high risk) non-convertible debt securities. The Fund will provide written notice to shareholders at least 60 days prior to any change to the requirement that it invest at least 80% of its managed assets as described in the sentence above. The portion of the Fund's assets invested in convertible securities and below investment grade (high yield/high risk) non-convertible debt securities will vary from time to time in light of the Fund's investment objective, changes in equity prices and changes in interest rates and other economic and market factors, although, under normal circumstances, the Fund will invest at least 20% of its managed assets in convertible securities and at least 20% of its managed assets in below investment grade (high yield/high risk) non-convertible debt securities (so long as the combined total equals at least 80% of the Fund's managed assets). "Managed assets" means the total assets of the Fund (including any assets attributable to any leverage that may be outstanding) minus the sum of accrued liabilities (other than debt representing financial leverage). For this purpose, the liquidation preference on the preferred shares will not constitute a liability.

CONVERTIBLE SECURITIES

Investment in convertible securities forms an important part of the Fund's investment strategies. Under normal circumstances, the Fund will invest at least 20% of its managed assets in convertible securities. Convertible securities include any corporate debt security or preferred stock that may be converted into underlying shares of common stock. The common stock underlying convertible securities may be issued by a different entity than the issuer of the convertible securities. Convertible securities entitle the holder to receive interest payments paid on corporate debt securities or the dividend preference on a preferred stock until such time as the convertible security matures or is redeemed or until the holder elects to exercise the conversion privilege. As a result of the conversion feature, however, the interest rate or dividend preference on a convertible security is generally less than would be the case if the securities were issued in non-convertible form.

The value of convertible securities is influenced by both the yield of non-convertible securities of comparable issuers and by the value of the underlying common stock. The value of a convertible security viewed without regard to its conversion feature (i.e., strictly on the basis of its yield) is sometimes

S-2

referred to as its "investment value." The investment value of the convertible security typically will fluctuate inversely with changes in prevailing interest rates. However, at the same time, the convertible security will be influenced by its "conversion value," which is the market value of the underlying common stock that would be obtained if the convertible security were converted. Conversion value fluctuates directly with the price of the underlying common stock.

If, because of a low price of the common stock, the conversion value is substantially below the investment value of the convertible security, the price of the convertible security is governed principally by its investment value. If the conversion value of a convertible security increases to a point that approximates or exceeds its investment value, the value of the security will be principally influenced by its conversion value. A convertible security will sell at a premium over its conversion value to the extent investors place value on the right to acquire the underlying common stock while holding a fixed income security. Holders of convertible securities have a claim on the assets of the issuer prior to the common stockholders, but may be subordinated to holders of similar non-convertible securities of the same issuer.

SYNTHETIC CONVERTIBLE SECURITIES

Calamos Asset Management, Inc. ("Calamos") may create a "synthetic" convertible security by combining fixed income securities with the right to acquire equity securities. More flexibility is possible in the assembly of a synthetic convertible security than in the purchase of a convertible security. Although synthetic convertible securities may be selected where the two components are issued by a single issuer, thus making the synthetic convertible security similar to the true convertible security, the character of a synthetic convertible security allows the combination of components representing distinct issuers, when Calamos believes that such a combination would better promote the Fund's investment objective. A synthetic convertible security also is a more flexible investment in that its two components may be purchased separately. For example, the Fund may purchase a warrant for inclusion in a synthetic convertible security but temporarily hold short-term investments while postponing the purchase of a corresponding bond pending development of more favorable market conditions.

A holder of a synthetic convertible security faces the risk of a decline in the price of the security or the level of the index involved in the convertible component, causing a decline in the value of the call option or warrant purchased to create the synthetic convertible security. Should the price of the stock fall below the exercise price and remain there throughout the exercise period, the entire amount paid for the call option or warrant would be lost. Because a synthetic convertible security includes the fixed-income component as well, the holder of a synthetic convertible security also faces the risk that interest rates will rise, causing a decline in the value of the fixed-income instrument.

The Fund may also purchase synthetic convertible securities manufactured by other parties, including convertible structured notes. Convertible structured notes are fixed income debentures linked to equity, and are typically issued by investment banks. Convertible structured notes have the attributes of a convertible security, however, the investment bank that issued the convertible note assumes the credit risk associated with the investment, rather than the issuer of the underlying common stock into which the note is convertible.

The Fund's holdings of synthetic convertible securities are considered convertible securities for purposes of the Fund's policy to invest at least 50% of its assets in convertible securities and 80% of its managed assets in a diversified portfolio of convertible and non-convertible income securities.

HIGH YIELD SECURITIES

Investment in high yield non-convertible debt securities forms an important part of the Fund's investment strategy. Under normal circumstances, the Fund will invest at least 20% of its managed assets in high yield non-convertible debt securities. The high yield securities in which the Fund invests are rated Ba or lower by Moody's or BB or lower by Standard & Poor's or are unrated but determined by Calamos to be of comparable quality. Non-convertible debt securities rated below investment grade are commonly referred to as "junk bonds" and are considered speculative with respect to the issuer's capacity to pay interest and repay principal.

S-3

INVESTMENT IN HIGH YIELD SECURITIES INVOLVES SUBSTANTIAL RISK OF LOSS. Below investment grade debt securities or comparable unrated securities are commonly referred to as "junk bonds" and are considered predominantly speculative with respect to the issuer's ability to pay interest and principal and are susceptible to default or decline in market value due to adverse economic and business developments. The market values for high yield securities tend to be very volatile, and these securities are less liquid than investment grade debt securities. For these reasons, your investment in the Fund is subject to the following specific risks:

- increased price sensitivity to changing interest rates and to a deteriorating economic environment;

- greater risk of loss due to default or declining credit quality;

- adverse company specific events are more likely to render the issuer unable to make interest and/or principal payments; and

- if a negative perception of the high yield market develops, the price and liquidity of high yield securities may be depressed. This negative perception could last for a significant period of time.

Debt securities rated below investment grade are speculative with respect to the capacity to pay interest and repay principal in accordance with the terms of such securities. A rating of C from Moody's means that the issue so rated can be regarded as having extremely poor prospects of ever attaining any real investment standing. Standard & Poor's assigns a rating of C to issues that are currently highly vulnerable to nonpayment, and the C rating may be used to cover a situation where a bankruptcy petition has been filed or similar action taken, but payments on the obligation are being continued (a C rating is also assigned to a preferred stock issue in arrears on dividends or sinking fund payments, but that is currently paying). See Appendix A to this statement of additional information for a description of Moody's and Standard & Poor's ratings.

Adverse changes in economic conditions are more likely to lead to a weakened capacity of a high yield issuer to make principal payments and interest payments than an investment grade issuer. The principal amount of high yield securities outstanding has proliferated in the past decade as an increasing number of issuers have used high yield securities for corporate financing. An economic downturn could severely affect the ability of highly leveraged issuers to service their debt obligations or to repay their obligations upon maturity. Similarly, down-turns in profitability in specific industries could adversely affect the ability of high yield issuers in that industry to meet their obligations. The market values of lower quality debt securities tend to reflect individual developments of the issuer to a greater extent than do higher quality securities, which react primarily to fluctuations in the general level of interest rates. Factors having an adverse impact on the market value of lower quality securities may have an adverse effect on the Fund's net asset value and the market value of its common shares. In addition, the Fund may incur additional expenses to the extent it is required to seek recovery upon a default in payment of principal or interest on its portfolio holdings. In certain circumstances, the Fund may be required to foreclose on an issuer's assets and take possession of its property or operations. In such circumstances, the Fund would incur additional costs in disposing of such assets and potential liabilities from operating any business acquired.

S-4

The secondary market for high yield securities may not be as liquid as the secondary market for more highly rated securities, a factor which may have an adverse effect on the Fund's ability to dispose of a particular security when necessary to meet its liquidity needs. There are fewer dealers in the market for high yield securities than investment grade obligations. The prices quoted by different dealers may vary significantly and the spread between the bid and asked price is generally much larger than higher quality instruments. Under adverse market or economic conditions, the secondary market for high yield securities could contract further, independent of any specific adverse changes in the condition of a particular issuer, and these instruments may become illiquid. As a result, the Fund could find it more difficult to sell these securities or may be able to sell the securities only at prices lower than if such securities were widely traded. Prices realized upon the sale of such lower rated or unrated securities, under these circumstances, may be less than the prices used in calculating the Fund's net asset value.

Since investors generally perceive that there are greater risks associated with lower quality debt securities of the type in which the Fund may invest a portion of its assets, the yields and prices of such securities may tend to fluctuate more than those for higher rated securities. In the lower quality segments of the debt securities market, changes in perceptions of issuers' creditworthiness tend to occur more frequently and in a more pronounced manner than do changes in higher quality segments of the debt securities market, resulting in greater yield and price volatility.

If the Fund invests in high yield securities that are rated C or below, the Fund will incur significant risk in addition to the risks associated with investments in high yield securities and corporate loans. Distressed securities frequently do not produce income while they are outstanding. The Fund may purchase distressed securities that are in default or the issuers of which are in bankruptcy. The Fund may be required to bear certain extraordinary expenses in order to protect and recover its investment.

DISTRESSED SECURITIES

The Fund may, but currently does not intend to, invest up to 5% of its total assets in distressed securities, including corporate loans, which are the subject of bankruptcy proceedings or otherwise in default as to the repayment of principal and/or payment of interest at the time of acquisition by the Fund or are rated in the lower rating categories (Ca or lower by Moody's or CC or lower by Standard & Poor's) or which are unrated investments considered by Calamos to be of comparable quality. Investment in distressed securities is speculative and involves significant risk. Distressed securities frequently do not produce income while they are outstanding and may require the Fund to bear certain extraordinary expenses in order to protect and recover its investment. Therefore, to the extent the Fund seeks capital appreciation through investment in distressed securities, the Fund's ability to achieve current income for its shareholders may be diminished. The Fund also will be subject to significant uncertainty as to when and in what manner and for what value the obligations evidenced by the distressed securities will eventually be satisfied (e.g., through a liquidation of the obligor's assets, an exchange offer or plan of reorganization involving the distressed securities or a payment of some amount in satisfaction of the obligation). In addition, even if an exchange offer is made or a plan of reorganization is adopted with respect to distressed securities held by the Fund, there can be no assurance that the securities or other assets received by the Fund in connection with such exchange offer or plan of reorganization will not have a lower value or income potential than may have been anticipated when the investment was made. Moreover, any securities received by the Fund upon completion of an exchange offer or plan of reorganization may be restricted as to resale. As a result of the Fund's participation in negotiations with respect to any exchange offer or plan of reorganization with respect to an issuer of distressed securities, the Fund may be restricted from disposing of such securities.

S-5

LOANS

The Fund may invest up to 5% of its total assets in loan participations and other direct claims against a borrower. The corporate loans in which the Fund invests primarily consist of direct obligations of a borrower and may include debtor in possession financings pursuant to Chapter 11 of the U.S. Bankruptcy Code, obligations of a borrower issued in connection with a restructuring pursuant to Chapter 11 of the U.S. Bankruptcy Code, leveraged buy-out loans, leveraged recapitalization loans, receivables purchase facilities, and privately placed notes. The Fund may invest in a corporate loan at origination as a co-lender or by acquiring in the secondary market participations in, assignments of or novations of a corporate loan. By purchasing a participation, the Fund acquires some or all of the interest of a bank or other lending institution in a loan to a corporate or government borrower. The participations typically will result in the Fund having a contractual relationship only with the lender not the borrower. The Fund will have the right to receive payments of principal, interest and any fees to which it is entitled only from the lender selling the participation and only upon receipt by the lender of the payments from the borrower. Many such loans are secured, although some may be unsecured. Such loans may be in default at the time of purchase. Loans that are fully secured offer the Fund more protection than an unsecured loan in the event of non-payment of scheduled interest or principal. However, there is no assurance that the liquidation of collateral from a secured loan would satisfy the corporate borrower's obligation, or that the collateral can be liquidated. Direct debt instruments may involve a risk of loss in case of default or insolvency of the borrower and may offer less legal protection to the Fund in the event of fraud or misrepresentation. In addition, loan participations involve a risk of insolvency of the lending bank or other financial intermediary. The markets in loans are not regulated by federal securities laws or the Securities and Exchange Commission (SEC).

As in the case of other high yield investments, such corporate loans may be rated in the lower rating categories of the established rating services (Ba or lower by Moody's or BB or lower by Standard & Poor's), or may be unrated investments considered by Calamos to be of comparable quality. As in the case of other high yield investments, such corporate loans can be expected to provide higher yields than lower yielding, higher rated fixed income securities, but may be subject to greater risk of loss of principal and income. There are, however, some significant differences between corporate loans and high yield bonds. Corporate loan obligations are frequently secured by pledges of liens and security interests in the assets of the borrower, and the holders of corporate loans are frequently the beneficiaries of debt service subordination provisions imposed on the borrower's bondholders. These arrangements are designed to give corporate loan investors preferential treatment over high yield investors in the event of a deterioration in the credit quality of the issuer. Even when these arrangements exist, however, there can be no assurance that the borrowers of the corporate loans will repay principal and/or pay interest in full. Corporate loans generally bear interest at rates set at a margin above a generally recognized base lending rate that may fluctuate on a day-to-day basis, in the case of the prime rate of a U.S. bank, or which may be adjusted on set dates, typically 30 days but generally not more than one year, in the case of the London Interbank Offered Rate. Consequently, the value of corporate loans held by the Fund may be expected to fluctuate significantly less than the value of other fixed rate high yield instruments as a result of changes in the interest rate environment. On the other hand, the secondary dealer market for certain corporate loans may not be as well developed as the secondary dealer market for high yield bonds, and therefore presents increased market risk relating to liquidity and pricing concerns.

FOREIGN SECURITIES

The Fund may invest up to 25% of its net assets, in securities of foreign issuers. For this purpose, foreign securities do not include American Depositary Receipts ("ADRs") or securities guaranteed by a United States person, but may include foreign securities in the form of European Depositary Receipts ("EDRs"), Global Depositary Receipts ("GDRs") or other securities representing underlying shares of

S-6

foreign issuers. Positions in those securities are not necessarily denominated in the same currency as the common stocks into which they may be converted. ADRs are receipts typically issued by an American bank or trust company evidencing ownership of the underlying securities. EDRs are European receipts listed on the Luxembourg Stock Exchange evidencing a similar arrangement. GDRs are U.S. dollar-denominated receipts evidencing ownership of foreign securities. Generally, ADRs, in registered form, are designed for the U.S. securities markets and EDRs and GDRs, in bearer form, are designed for use in foreign securities markets. The Fund may invest in sponsored or unsponsored ADRs. In the case of an unsponsored ADR, the Fund is likely to bear its proportionate share of the expenses of the depository and it may have greater difficulty in receiving shareholder communications than it would have with a sponsored ADR.

To the extent positions in portfolio securities are denominated in foreign currencies, the Fund's investment performance is affected by the strength or weakness of the U.S. dollar against those currencies. For example, if the dollar falls in value relative to the Japanese yen, the dollar value of a Japanese stock held in the portfolio will rise even though the price of the stock remains unchanged. Conversely, if the dollar rises in value relative to the yen, the dollar value of the Japanese stock will fall. (See discussion of transaction hedging and portfolio hedging below under "Currency Exchange Transactions.")

Investors should understand and consider carefully the risks involved in foreign investing. Investing in foreign securities, which are generally denominated in foreign currencies, and utilization of forward foreign currency exchange contracts involve certain considerations comprising both risks and opportunities not typically associated with investing in U.S. securities. These considerations include: fluctuations in exchange rates of foreign currencies; possible imposition of exchange control regulation or currency restrictions that would prevent cash from being brought back to the United States; less public information with respect to issuers of securities; less governmental supervision of stock exchanges, securities brokers, and issuers of securities; lack of uniform accounting, auditing and financial reporting standards; lack of uniform settlement periods and trading practices; less liquidity and frequently greater price volatility in foreign markets than in the United States; possible imposition of foreign taxes; and sometimes less advantageous legal, operational and financial protections applicable to foreign sub-custodial arrangements.

Although the Fund intends to invest in companies and government securities of countries having stable political environments, there is the possibility of expropriation or confiscatory taxation, seizure or nationalization of foreign bank deposits or other assets, establishment of exchange controls, the adoption of foreign government restrictions, or other adverse political, social or diplomatic developments that could affect investment in these nations.

The Fund expects that substantially all of its investments will be in developed nations. However, the Fund may invest in the securities of emerging countries. The securities markets of emerging countries are substantially smaller, less developed, less liquid and more volatile than the securities markets of the U.S. and other more developed countries. Disclosure and regulatory standards in many respects are less stringent than in the U.S. and other major markets. There also may be a lower level of monitoring and regulation of emerging markets and the activities of investors in such markets, and enforcement of existing regulations has been extremely limited. Economies in individual emerging markets may differ favorably or unfavorably from the U.S. economy in such respects as growth of gross domestic product, rates of inflation, currency depreciation, capital reinvestment, resource self-sufficiency and balance of payments positions. Many emerging market countries have experienced high rates of inflation for many years, which has had and may continue to have very negative effects on the economies and securities markets of those countries.

S-7

CURRENCY EXCHANGE TRANSACTIONS

Currency exchange transactions may be conducted either on a spot (i.e., cash) basis at the spot rate for purchasing or selling currency prevailing in the foreign exchange market or through forward currency exchange contracts ("forward contracts"). Forward contracts are contractual agreements to purchase or sell a specified currency at a specified future date (or within a specified time period) and price set at the time of the contract. Forward contracts are usually entered into with banks, foreign exchange dealers or broker-dealers, are not exchange traded, and are usually for less than one year, but may be renewed.

Forward currency exchange transactions may involve currencies of the different countries in which the Fund may invest and serve as hedges against possible variations in the exchange rate between these currencies. Currency exchange transactions are limited to transaction hedging and portfolio hedging involving either specific transactions or portfolio positions, except to the extent described below under "Synthetic Foreign Money Market Positions." Transaction hedging is the purchase or sale of forward contracts with respect to specific receivables or payables of the Fund accruing in connection with the purchase and sale of its portfolio securities or the receipt of dividends or interest thereon. Portfolio hedging is the use of forward contracts with respect to portfolio security positions denominated or quoted in a particular foreign currency. Portfolio hedging allows the Fund to limit or reduce its exposure in a foreign currency by entering into a forward contract to sell such foreign currency (or another foreign currency that acts as a proxy for that currency) at a future date for a price payable in U.S. dollars so that the value of the foreign denominated portfolio securities can be approximately matched by a foreign denominated liability. The Fund may not engage in portfolio hedging with respect to the currency of a particular country to an extent greater than the aggregate market value (at the time of making such sale) of the securities held in its portfolio denominated or quoted in that particular currency, except that the Fund may hedge all or part of its foreign currency exposure through the use of a basket of currencies or a proxy currency where such currencies or currency act as an effective proxy for other currencies. In such a case, the Fund may enter into a forward contract where the amount of the foreign currency to be sold exceeds the value of the securities denominated in such currency. The use of this basket hedging technique may be more efficient and economical than entering into separate forward contracts for each currency held in the Fund. The Fund may not engage in "speculative" currency exchange transactions.

If the Fund enters into a forward contract, the Fund's custodian will segregate liquid assets of the Fund having a value equal to the Fund's commitment under such forward contract. At the maturity of the forward contract to deliver a particular currency, the Fund may either sell the portfolio security related to the contract and make delivery of the currency, or it may retain the security and either acquire the currency on the spot market or terminate its contractual obligation to deliver the currency by purchasing an offsetting contract with the same currency trader obligating it to purchase on the same maturity date the same amount of the currency. It is impossible to forecast with absolute precision the market value of portfolio securities at the expiration of a forward contract. Accordingly, it may be necessary for a Fund to purchase additional currency on the spot market (and bear the expense of such purchase) if the market value of the security is less than the amount of currency the Fund is obligated to deliver and if a decision is made to sell the security and make delivery of the currency. Conversely, it may be necessary to sell on the spot market some of the currency received upon the sale of the portfolio security if its market value exceeds the amount of currency the Fund is obligated to deliver.

If the Fund retains the portfolio security and engages in an offsetting transaction, the Fund will incur a gain or a loss to the extent that there has been movement in forward contract prices. If the Fund engages in an offsetting transaction, it may subsequently enter into a new forward contract to sell the currency. Should forward prices decline during the period between the Fund's entering into a forward contract for the sale of a currency and the date it enters into an offsetting contract for the purchase of the

S-8

currency, the Fund will realize a gain to the extent the price of the currency it has agreed to sell exceeds the price of the currency it has agreed to purchase. Should forward prices increase, the Fund will suffer a loss to the extent the price of the currency it has agreed to purchase exceeds the price of the currency it has agreed to sell. A default on the contract would deprive the Fund of unrealized profits or force the Fund to cover its commitments for purchase or sale of currency, if any, at the current market price.

Hedging against a decline in the value of a currency does not eliminate fluctuations in the value of a portfolio security traded in that currency or prevent a loss if the value of the security declines. Hedging transactions also preclude the opportunity for gain if the value of the hedged currency should rise. Moreover, it may not be possible for a Fund to hedge against a devaluation that is so generally anticipated that the Fund is not able to contract to sell the currency at a price above the devaluation level it anticipates. The cost to the Fund of engaging in currency exchange transactions varies with such factors as the currency involved, the length of the contract period, and prevailing market conditions. Because currency exchange transactions are usually conducted on a principal basis, no fees or commissions are involved.

SYNTHETIC FOREIGN MONEY MARKET POSITIONS

The Fund may invest in money market instruments denominated in foreign currencies. In addition to, or in lieu of, such direct investment, the Fund may construct a synthetic foreign money market position by (a) purchasing a money market instrument denominated in one currency, generally U.S. dollars, and (b) concurrently entering into a forward contract to deliver a corresponding amount of that currency in exchange for a different currency on a future date and at a specified rate of exchange. For example, a synthetic money market position in Japanese yen could be constructed by purchasing a U.S. dollar money market instrument, and entering concurrently into a forward contract to deliver a corresponding amount of U.S. dollars in exchange for Japanese yen on a specified date and at a specified rate of exchange. Because of the availability of a variety of highly liquid short-term U.S. dollar money market instruments, a synthetic money market position utilizing such U.S. dollar instruments may offer greater liquidity than direct investment in foreign currency and a concurrent construction of a synthetic position in such foreign currency, in terms of both income yield and gain or loss from changes in currency exchange rates, in general should be similar, but would not be identical because the components of the alternative investments would not be identical.

DEBT OBLIGATIONS OF NON-U.S. GOVERNMENTS

An investment in debt obligations of non-U.S. governments and their political subdivisions (sovereign debt) involves special risks that are not present in corporate debt obligations. The non-U.S. issuer of the sovereign debt or the non-U.S. governmental authorities that control the repayment of the debt may be unable or unwilling to repay principal or interest when due, and the Fund may have limited recourse in the event of a default. During periods of economic uncertainty, the market prices of sovereign debt may be more volatile than prices of debt obligations of U.S. issuers. In the past, certain non-U.S. countries have encountered difficulties in servicing their debt obligations, withheld payments of principal and interest and declared moratoria on the payment of principal and interest on their sovereign debt.

A sovereign debtor's willingness or ability to repay principal and pay interest in a timely manner may be affected by, among other factors, its cash flow situation, the extent of its foreign currency reserves, the availability of sufficient non-U.S. currency, the relative size of the debt service burden, the sovereign debtor's policy toward its principal international lenders and local political constraints. Sovereign debtors may also be dependent on expected disbursements from non-U.S. governments, multilateral agencies and other entities to reduce principal and interest arrearages on their debt. The failure of a sovereign debtor to implement economic reforms, achieve specified levels of economic performance or repay principal or interest when due may result in the cancellation of third-party

S-9

commitments to lend funds to the sovereign debtor, which may further impair such debtor's ability or willingness to service its debts.

EURODOLLAR INSTRUMENTS AND SAMURAI AND YANKEE BONDS. The Fund may invest in Eurodollar instruments and Samurai and Yankee bonds. Eurodollar instruments are bonds of corporate and government issuers that pay interest and principal in U.S. dollars but are issued in markets outside the United States, primarily in Europe. Samurai bonds are yen-denominated bonds sold in Japan by non-Japanese issuers. Yankee bonds are U.S. dollar-denominated bonds typically issued in the U.S. by non-U.S. governments and their agencies and non-U.S. banks and corporations. The Fund may also invest in Eurodollar Certificates of Deposit ("ECDs"), Eurodollar Time Deposits ("ETDs") and Yankee Certificates of Deposit ("Yankee CDs"). ECDs are U.S. dollar-denominated certificates of deposit issued by non-U.S. branches of domestic banks; ETDs are U.S. dollar-denominated deposits in a non-U.S. branch of a U.S. bank or in a non-U.S. bank; and Yankee CDs are U.S. dollar-denominated certificates of deposit issued by a U.S. branch of a non-U.S. bank and held in the U.S. These investments involve risks that are different from investments in securities issued by U.S. issuers, including potential unfavorable political and economic developments, non-U.S. withholding or other taxes, seizure of non-U.S. deposits, currency controls, interest limitations or other governmental restrictions which might affect payment of principal or interest.

LENDING OF PORTFOLIO SECURITIES

The Fund may lend its portfolio securities to broker-dealers and banks. Any such loan must be continuously secured by collateral in cash or cash equivalents maintained on a current basis in an amount at least equal to the market value of the securities loaned by the Fund. The Fund would continue to receive the equivalent of the interest or dividends paid by the issuer on the securities loaned, and would also receive an additional return that may be in the form of a fixed fee or a percentage of the collateral. The Fund may pay reasonable fees to persons unaffiliated with the Fund for services in arranging these loans. The Fund would have the right to call the loan and obtain the securities loaned at any time on notice of not more than five business days. The Fund would not have the right to vote the securities during the existence of the loan but would call the loan to permit voting of the securities, if, in Calamos's judgment, a material event requiring a shareholder vote would otherwise occur before the loan was repaid. In the event of bankruptcy or other default of the borrower, the Fund could experience both delays in liquidating the loan collateral or recovering the loaned securities and losses, including
(a) possible decline in the value of the collateral or in the value of the securities loaned during the period while the Fund seeks to enforce its rights thereto, (b) possible subnormal levels of income and lack of access to income during this period, and (c) expenses of enforcing its rights.

OPTIONS ON SECURITIES, INDEXES AND CURRENCIES

The Fund may purchase and sell put options and call options on securities, indexes or foreign currencies. The Fund may purchase agreements, sometimes called cash puts, that may accompany the purchase of a new issue of bonds from a dealer.

A put option gives the purchaser of the option, upon payment of a premium, the right to sell, and the writer the obligation to buy, the underlying security, commodity, index, currency or other instrument at the exercise price. For instance, the Fund's purchase of a put option on a security might be designed to protect its holdings in the underlying instrument (or, in some cases, a similar instrument) against a substantial decline in the market value by giving the Fund the right to sell such instrument at the option exercise price. A call option, upon payment of a premium, gives the purchaser of the option the right to buy, and the seller the obligation to sell, the underlying instrument at the exercise price. The Fund's purchase of a call option on a security, financial future, index, currency or other instrument might be intended to protect a fund against an increase in the price of the underlying instrument that it intends to purchase in the future by fixing the price at which it may purchase such instrument.

The Fund is authorized to purchase and sell exchange listed options and over-the-counter options ("OTC options"). Exchange listed options are issued by a regulated intermediary such as the Options Clearing Corporation ("OCC"), which guarantees the performance of the obligations of the parties to such options. The discussion below uses the OCC as an example, but is also applicable to other financial intermediaries.

With certain exceptions, OCC issued and exchange listed options generally settle by physical delivery of the underlying security or currency, although in the future cash settlement may become available. Index options and Eurodollar instruments are cash settled for the net amount, if any, by which the option is "in-the-money" (i.e., where the value of the underlying instrument exceeds, in the case of a call option, or is less than, in the case of a put option, the exercise price of the option) at the time the option is exercised. Frequently, rather than taking or making delivery of the underlying instrument through the process of exercising the option, listed options are closed by entering into offsetting purchase or sale transactions that do not result in ownership of the new option.

S-10

OTC options are purchased from or sold to securities dealers, financial institutions or other parties ("Counterparties") through direct bilateral agreement with the Counterparty. In contrast to exchange listed options, which generally have standardized terms and performance mechanics, all the terms of an OTC option, including such terms as method of settlement, term, exercise price, premium, guarantees and security, are set by negotiation of the parties. The Fund may sell OTC options (other than OTC currency options) that are subject to a buy-back provision permitting the Fund to require the Counterparty to sell the option back to a fund at a formula price within seven days. The Fund expects generally to enter into OTC options that have cash settlement provisions, although it is not required to do so. The staff of the SEC currently takes the position that OTC options purchased by a fund, and portfolio securities "covering" the amount of a fund's obligation pursuant to an OTC option sold by it (or the amount of assets equal to the formula price for the repurchase of the option, if any, less the amount by which the option is in the money) are illiquid, and are subject to a fund's limitation on investing no more than 15% of its net assets in illiquid securities.

The Fund may also purchase and sell options on securities indices and other financial indices. Options on securities indices and other financial indices are similar to options on a security or other instrument except that, rather than settling by physical delivery of the underlying instrument, they settle by cash settlement, i.e., an option or an index gives the holder the right to receive, upon exercise of the option, an amount of cash if the closing level of the index upon which the option is based exceeds, in the case of a call, or is less than, in the case of a put, the exercise price of the option (except if, in the case of an OTC option, physical delivery is specified). This amount of cash is equal to the excess of the closing price of the index over the exercise price of the option, which also may be multiplied by a formula value. The seller of the option is obligated, in return for the premium received, to make delivery of this amount. The gain or loss on an option on an index depends on price movements in the instruments making upon the market, market segment, industry or other composite on which the underlying index is based, rather than price movements in individual securities, as is the case with respect to options on securities.

The Fund will write call options and put options only if they are "covered." For example, a call option written by the Fund will require the Fund to hold the securities subject to the call (or securities convertible into the needed securities without additional consideration) or to segregate cash or liquid assets sufficient to purchase and deliver the securities if the call is exercised. A call option sold by a fund on an index will require the Fund to own portfolio securities which correlate with the index or to segregate cash or liquid assets equal to the excess of the index value over the exercise price on a current basis. A put option written by the Fund requires the Fund to segregate cash or liquid assets equal to the exercise price.

OTC options entered into by the Fund and OCC issued and exchange listed index options will generally provide for cash settlement. As a result, when the Fund sells these instruments it will only segregate an amount of cash or liquid assets equal to its accrued net obligations, as there is no requirement for payment or delivery of amounts in excess of the net amount. These amounts will equal 100% of the exercise price in the case of a non cash-settled put, the same as an OCC guaranteed listed option sold by the Fund, or the in-the-money amount plus any sell-back formula amount in the case of a cash-settled put or call. In addition, when the Fund sells a call option on an index at a time when the in-the-money amount exceeds the exercise price, the Fund will segregate, until the option expires or is closed out, cash or cash equivalents equal in value to such excess. OCC issued and exchange listed options sold by the Fund other than those above generally settle with physical delivery, or with an election of either physical delivery or cash settlement and the Fund will segregate an amount of cash or liquid assets equal to the full value of the option. OTC options settling with physical delivery, or with an election of either physical delivery or cash settlement, will be treated the same as other options settling with physical delivery.

If an option written by the Fund expires, the Fund realizes a capital gain equal to the premium received at the time the option was written. If an option purchased by the Fund expires, the Fund realizes a capital loss equal to the premium paid.

The Fund will realize a capital gain from a closing purchase transaction if the cost of the closing option is less than the premium received from writing the option, or, if it is more, the Fund will realize a capital loss. If the premium received from a closing sale transaction is more than the premium paid to purchase the option, the Fund will realize a capital gain or, if it is less, the Fund will realize a capital loss. The principal factors affecting the market value of a put or a call option include supply and demand, interest rates, the current market price of the underlying security or index in relation to the exercise price of the option, the volatility of the underlying security or index, and the time remaining until the expiration date.

A put or call option purchased by the Fund is an asset of the Fund, valued initially at the premium paid for the option. The premium received for an option written by the Fund is recorded as a deferred credit. The value of an option purchased or written is marked-to-market daily and is valued at the closing price on the exchange on which it is traded or, if not traded on an exchange or if no closing price is available, at the mean between the last bid and asked prices.

S-11

RISKS ASSOCIATED WITH OPTIONS

There are several risks associated with transactions in options. For example, there are significant differences between the securities markets, the currency markets and the options markets that could result in an imperfect correlation among these markets, causing a given transaction not to achieve its objectives. A decision as to whether, when and how to use options involves the exercise of skill and judgment, and even a well-conceived transaction may be unsuccessful to some degree because of market behavior or unexpected events. The ability of the Fund to utilize options successfully will depend on Calamos' ability to predict pertinent market investments, which cannot be assured.

The Fund's ability to close out its position as a purchaser or seller of an OCC or exchange listed put or call option is dependent, in part, upon the liquidity of the option market. Among the possible reasons for the absence of a liquid option market on an exchange are: (i) insufficient trading interest in certain options; (ii) restrictions on transactions imposed by an exchange; (iii) trading halts, suspensions or other restrictions imposed with respect to particular classes or series of options or underlying securities including reaching daily price limits; (iv) interruption of the normal operations of the OCC or an exchange; (v) inadequacy of the facilities of an exchange or OCC to handle current trading volume; or (vi) a decision by one or more exchanges to discontinue the trading of options (or a particular class or series of options), in which event the relevant market for that option on that exchange would cease to exist, although outstanding options on that exchange would generally continue to be exercisable in accordance with their terms. If the Fund were unable to close out an option that it has purchased on a security, it would have to exercise the option in order to realize any profit or the option would expire and become worthless. If the Fund were unable to close out a covered call option that it had written on a security, it would not be able to sell the underlying security until the option expired. As the writer of a covered call option on a security, the Fund foregoes, during the option's life, the opportunity to profit from increases in the market value of the security covering the call option above the sum of the premium and the exercise price of the call. As the writer of a covered call option on a foreign currency, the Fund foregoes, during the option's life, the opportunity to profit from currency appreciation.

The hours of trading for listed options may not coincide with the hours during which the underlying financial instruments are traded. To the extent that the option markets close before the markets for the underlying financial instruments, significant price and rate movements can take place in the underlying markets that cannot be reflected in the option markets.

Unless the parties provide for it, there is no central clearing or guaranty function in an OTC option. As a result, if the Counterparty (as described above under "Options on Securities, Indexes and Currencies") fails to make or take delivery of the security, currency or other instrument underlying an OTC option it has entered into with a fund or fails to make a cash settlement payment due in accordance with the terms of that option, a fund will lose any premium it paid for the option as well as any anticipated benefit of the transaction. Accordingly, Calamos must assess the creditworthiness of each such Counterparty or any guarantor or credit enhancement of the Counterparty's credit to determine the likelihood that the terms of the OTC option will be satisfied. The Fund will engage in OTC option transactions only with U.S. government securities dealers recognized by the Federal Reserve Bank of New York as "primary dealers" or broker/dealers, domestic or foreign banks or other financial institutions which have received (or the guarantors of the obligation of which have received) a short-term credit rating of A-1 from S&P or P-1 from Moody's or an equivalent rating from any nationally recognized statistical rating organization ("NRSRO") or, in the case of OTC currency transactions, are determined to be of equivalent credit quality by Calamos.

The Fund may purchase and sell call options on securities indices and currencies. All calls sold by the Fund must be "covered." Even though the Fund will receive the option premium to help protect it against loss, a call sold by the Fund exposes the Fund during the term of the option to possible loss of opportunity to realize appreciation in the market price of the underlying security or instrument and may require a fund to hold a security or instrument which it might otherwise have sold. The Fund may purchase and sell put options on securities indices and currencies. In selling put options, there is a risk that the Fund may be required to buy the underlying security at a disadvantageous price above the market price.

S-12

If trading were suspended in an option purchased or written by the Fund, the Fund would not be able to close out the option. If restrictions on exercise were imposed, the Fund might not be able to exercise an option it has purchased.

FUTURES CONTRACTS AND OPTIONS ON FUTURES CONTRACTS

The Fund may use interest rate futures contracts, index futures contracts and foreign currency futures contracts. An interest rate, index or foreign currency futures contract provides for the future sale by one party and purchase by another party of a specified quantity of a financial instrument or the cash value of an index(1) at a specified price and time. A public market exists in futures contracts covering a number of indexes (including, but not limited to: the Standard & Poor's 500 Index, the Russell 2000 Index, the Value Line Composite Index, and the New York Stock Exchange Composite Index) as well as financial instruments (including, but not limited to: U.S. Treasury bonds, U.S. Treasury notes, Eurodollar certificates of deposit and foreign currencies). Other index and financial instrument futures contracts are available and it is expected that additional futures contracts will be developed and traded.

The Fund may purchase and write call and put futures options. Futures options possess many of the same characteristics as options on securities, indexes and foreign currencies (discussed above). A futures option gives the holder the right, in return for the premium paid, to assume a long position
(call) or short position (put) in a futures contract at a specified exercise price at any time during the period of the option. Upon exercise of a call option, the holder acquires a long position in the futures contract and the writer is assigned the opposite short position. In the case of a put option, the opposite is true. The Fund might, for example, use futures contracts to hedge against or gain exposure to fluctuations in the general level of stock prices, anticipated changes in interest rates or currency fluctuations that might adversely affect either the value of the Fund's securities or the price of the securities that the Fund intends to purchase. Although other techniques could be used to reduce or increase the Fund's exposure to stock price, interest rate and currency fluctuations, the Fund may be able to achieve its desired exposure more effectively and perhaps at a lower cost by using futures contracts and futures options.

The Fund will only enter into futures contracts and futures options that are standardized and traded on an exchange, board of trade or similar entity, or quoted on an automated quotation system.

The success of any futures transaction depends on the investment manager correctly predicting changes in the level and direction of stock prices, interest rates, currency exchange rates and other factors. Should those predictions be incorrect, the Fund's return might have been better had the transaction not been attempted; however, in the absence of the ability to use futures contracts, the investment manager might have taken portfolio actions in anticipation of the same market movements with similar investment results, but, presumably, at greater transaction costs. When a purchase or sale of a futures contract is made by the Fund, the Fund is required to deposit with its custodian (or broker, if legally permitted) a specified amount of cash or U.S. Government securities or other securities acceptable to the broker ("initial margin"). The margin required for a futures contract is set by the exchange on which the contract is traded and may be modified during the term of the contract, although the Fund's broker may require margin deposits in excess of the minimum required by the exchange. The initial margin is in the nature of a performance bond or good faith deposit on the futures contract, which is returned to the Fund upon termination of the contract, assuming all contractual obligations have been satisfied. The Fund expects to earn interest income on its initial margin deposits. A futures contract held by the Fund is valued daily at


(1) A futures contract on an index is an agreement pursuant to which two parties agree to take or make delivery of an amount of cash equal to the difference between the value of the index at the close of the last trading day of the contract and the price at which the index contract was originally written. Although the value of a securities index is a function of the value of certain specified securities, no physical delivery of those securities is made.

S-13

the official settlement price of the exchange on which it is traded. Each day the Fund pays or receives cash, called "variation margin," equal to the daily change in value of the futures contract. This process is known as "marking-to-market." Variation margin paid or received by the Fund does not represent a borrowing or loan by the Fund but is instead settlement between the Fund and the broker of the amount one would owe the other if the futures contract had expired at the close of the previous day. In computing daily net asset value, the Fund will mark-to-market its open futures positions.

The Fund is also required to deposit and maintain margin with respect to put and call options on futures contracts written by it. Such margin deposits will vary depending on the nature of the underlying futures contract (and the related initial margin requirements), the current market value of the option and other futures positions held by the Fund.

Although some futures contracts call for making or taking delivery of the underlying securities, usually these obligations are closed out prior to delivery by offsetting purchases or sales of matching futures contracts (same exchange, underlying security or index, and delivery month). If an offsetting purchase price is less than the original sale price, the Fund engaging in the transaction realizes a capital gain, or if it is more, the Fund realizes a capital loss. Conversely, if an offsetting sale price is more than the original purchase price, the Fund engaging in the transaction realizes a capital gain, or if it is less, the Fund realizes a capital loss. The transaction costs must also be included in these calculations.

RISKS ASSOCIATED WITH FUTURES

There are several risks associated with the use of futures contracts and futures options. A purchase or sale of a futures contract may result in losses in excess of the amount invested in the futures contract. In trying to increase or reduce market exposure, there can be no guarantee that there will be a correlation between price movements in the futures contract and in the portfolio exposure sought. In addition, there are significant differences between the securities and futures markets that could result in an imperfect correlation between the markets, causing a given transaction not to achieve its objectives. The degree of imperfection of correlation depends on circumstances such as: variations in speculative market demand for futures, futures options and the related securities, including technical influences in futures and futures options trading and differences between the securities markets and the securities underlying the standard contracts available for trading. For example, in the case of index futures contracts, the composition of the index, including the issuers and the weighing of each issue, may differ from the composition of the Fund's portfolio, and, in the case of interest rate futures contracts, the interest rate levels, maturities and creditworthiness of the issues underlying the futures contract may differ from the financial instruments held in the Fund's portfolio. A decision as to whether, when and how to use futures contracts involves the exercise of skill and judgment, and even a well-conceived transaction may be unsuccessful to some degree because of market behavior or unexpected stock price or interest rate trends.

Futures exchanges may limit the amount of fluctuation permitted in certain futures contract prices during a single trading day. The daily limit establishes the maximum amount that the price of a futures contract may vary either up or down from the previous day's settlement price at the end of the current trading session. Once the daily limit has been reached in a futures contract subject to the limit, no more trades may be made on that day at a price beyond that limit. The daily limit governs only price movements during a particular trading day and therefore does not limit potential losses because the limit may work to prevent the liquidation of unfavorable positions. For example, futures prices have occasionally moved to the daily limit for several consecutive trading days with little or no trading, thereby preventing prompt liquidation of positions and subjecting some holders of futures contracts to substantial losses. Stock index futures contracts are not normally subject to such daily price change limitations.

There can be no assurance that a liquid market will exist at a time when the Fund seeks to close out a futures position or futures option position. The Fund would be exposed to possible loss on the position

S-14

during the interval of inability to close, and would continue to be required to meet margin requirements until the position is closed. In addition, many of the contracts discussed above are relatively new instruments without a significant trading history. As a result, there can be no assurance that an active secondary market will develop or continue to exist.

LIMITATIONS ON OPTIONS AND FUTURES

If other options, futures contracts or futures options of types other than those described herein are traded in the future, the Fund may also use those investment vehicles, provided the Board of Trustees determines that their use is consistent with the Fund's investment objective.

When purchasing a futures contract or writing a put option on a futures contract, the Fund must maintain with its custodian (or broker, if legally permitted) cash or cash equivalents (including any margin) equal to the market value of such contract. When writing a call option on a futures contract, the Fund similarly will maintain with its custodian cash or cash equivalents (including any margin) equal to the amount by which such option is in-the-money until the option expires or is closed by the Fund.

The Fund may not maintain open short positions in futures contracts, call options written on futures contracts or call options written on indexes if, in the aggregate, the market value of all such open positions exceeds the current value of the securities in its portfolio, plus or minus unrealized gains and losses on the open positions, adjusted for the historical relative volatility of the relationship between the portfolio and the positions. For this purpose, to the extent the Fund has written call options on specific securities in its portfolio, the value of those securities will be deducted from the current market value of the securities portfolio.

In order to comply with Commodity Futures Trading Commission Regulation 4.5 and thereby avoid being deemed a "commodity pool operator," the Fund will use commodity futures or commodity options contracts solely for bona fide hedging purposes within the meaning and intent of Regulation 1.3(z), or, with respect to positions in commodity futures and commodity options contracts that do not come within the meaning and intent of 1.3(z), the aggregate initial margin and premiums required to establish such positions will not exceed 5% of the fair market value of the assets of the Fund, after taking into account unrealized profits and unrealized losses on any such contracts it has entered into. In the case of an option that is in-the-money at the time of purchase, the in-the-money amount (as defined in Section 190.01(x) of the Commission Regulations) may be excluded in computing such 5%.

Recently, the CFTC proposed amendments to Regulation 4.5 to include an alternative to the 5 percent test for positions that do not come within the meaning and intent of 1.3(z). Under the alternative test, the aggregate notational value of such non-hedge positions must not exceed the liquidation value of the Fund's portfolio. Notational value will be calculated for each such futures position by multiplying the size of the contract, in contract units, by the current market price per unit and for each such option position by multiplying the size of the contract, in contract units, by the stock price per unit.

Although the proposed amendment to Regulation 4.5 is not effective as of the date of this Statement of Additional Information, the CFTC has indicated that it will take a no-action position if a fund, pending final action on the amendments, operates in accordance with the amendments.

WARRANTS

The Fund may invest in warrants. A warrant is a right to purchase common stock at a specific price (usually at a premium above the market value of the underlying common stock at time of issuance) during a specified period of time. A warrant may have a life ranging from less than a year to twenty years or longer, but a warrant becomes worthless unless it is exercised or sold before expiration. In addition, if the market price of the common stock does not exceed the warrant's exercise price during the life of the warrant, the warrant will expire worthless. Warrants have no voting rights, pay no dividends and have no rights with respect to the assets of the corporation issuing them. The percentage increase or decrease in the value of a warrant may be greater than the percentage increase or decrease in the value of the underlying common stock.

PORTFOLIO TURNOVER

Although the Fund does not purchase securities with a view to rapid turnover, there are no limitations on the length of time that portfolio securities must be held. Portfolio turnover can occur for a number of reasons, including calls for redemption, general conditions in the securities markets, more

S-15

favorable investment opportunities in other securities, or other factors relating to the desirability of holding or changing a portfolio investment. The portfolio turnover rates may vary greatly from year to year. A high rate of portfolio turnover in the Fund would result in increased transaction expenses, which must be borne by that Fund. High portfolio turnover may also result in the realization of capital gains or losses and, to the extent net short-term capital gains are realized, any distributions resulting from such gains will be considered ordinary income for federal income tax purposes.

SHORT SALES

The Fund may attempt to hedge against market risk and to enhance income by selling short "against the box," that is: (1) entering into short sales of securities that it currently has the right to acquire through the conversion or exchange of other securities that it owns, or to a lesser extent, entering into short sales of securities that it currently owns; and (2) entering into arrangements with the broker-dealers through which such securities are sold short to receive income with respect to the proceeds of short sales during the period the Fund's short positions remain open. The Fund may make short sales of securities only if at all times when a short position is open the Fund owns an equal amount of such securities or securities convertible into or exchangeable for, without payment of any further consideration, securities of the same issue as, and equal in amount to, the securities sold short.

In a short sale against the box, the Fund does not deliver from its portfolio the securities sold and does not receive immediately the proceeds from the short sale. Instead, the Fund borrows the securities sold short from a broker-dealer through which the short sale is executed, and the broker-dealer delivers such securities, on behalf of the Fund, to the purchaser of such securities. Such broker-dealer is entitled to retain the proceeds from the short sale until the Fund delivers to such broker-dealer the securities sold short. In addition, the Fund is required to pay to the broker-dealer the amount of any dividends paid on shares sold short. Finally, to secure its obligation to deliver to such broker-dealer the securities sold short, the Fund must deposit and continuously maintain in a separate account with the Fund's custodian an equivalent amount of the securities sold short or securities convertible into or exchangeable for such securities without the payment of additional consideration. The Fund is said to have a short position in the securities sold until it delivers to the broker-dealer the securities sold, at which time the Fund receives the proceeds of the sale. Because the Fund ordinarily will want to continue to hold securities in its portfolio that are sold short, the Fund will normally close out a short position by purchasing on the open market and delivering to the broker-dealer an equal amount of the securities sold short, rather than by delivering portfolio securities.

A short sale works the same way, except that the Fund places in the segregated account cash or U.S. government securities equal in value to the difference between (i) the market value of the securities sold short at the time they were sold short and (ii) any cash or U.S. government securities required to be deposited with the broker as collateral. In addition, so long as the short position is open, the Fund must adjust daily the value of the segregated account so that the amount deposited in it, plus any amount deposited with the broker as collateral, will equal the current market value of the security sold short. However, the value of the segregated account may not be reduced below the point at which the segregated account, plus any amount deposited with the broker, is equal to the market value of the securities sold short at the time they were sold short.

Short sales may protect the Fund against the risk of losses in the value of its portfolio securities because any unrealized losses with respect to such portfolio securities should be wholly or partially offset by a corresponding gain in the short position. However, any potential gains in such portfolio securities should be wholly or partially offset by a corresponding loss in the short position. The extent to which such gains or losses are offset will depend upon the amount of securities sold short relative to the amount

S-16

the Fund owns, either directly or indirectly, and, in the case where the Fund owns convertible securities, changes in the conversion premium.

Short sale transactions of the Fund involve certain risks. In particular, the imperfect correlation between the price movements of the convertible securities and the price movements of the underlying common stock being sold short creates the possibility that losses on the short sale hedge position may be greater than gains in the value of the portfolio securities being hedged. In addition, to the extent that the Fund pays a conversion premium for a convertible security, the Fund is generally unable to protect against a loss of such premium pursuant to a short sale hedge. In determining the number of shares to be sold short against the Fund's position in the convertible securities, the anticipated fluctuation in the conversion premiums is considered. The Fund will also incur transaction costs in connection with short sales. Certain provisions of the Internal Revenue Code (and related Treasury Regulations thereunder) may limit the degree to which the Fund is able to enter into short sales and other transactions with similar effects without triggering adverse tax consequences, which limitations might impair the Fund's ability to achieve its investment objective. See "U.S. Federal Income Tax Matters."

In addition to enabling the Fund to hedge against market risk, short sales may afford the Fund an opportunity to earn additional current income to the extent the Fund is able to enter into arrangements with broker-dealers through which the short sales are executed to receive income with respect to the proceeds of the short sales during the period the Fund's short positions remain open.

"WHEN-ISSUED" AND DELAYED DELIVERY SECURITIES AND REVERSE REPURCHASE AGREEMENTS

The Fund may purchase securities on a when-issued or delayed-delivery basis. Although the payment and interest terms of these securities are established at the time the Fund enters into the commitment, the securities may be delivered and paid for a month or more after the date of purchase, when their value may have changed. The Fund makes such commitments only with the intention of actually acquiring the securities, but may sell the securities before settlement date if Calamos deems it advisable for investment reasons. The Fund may utilize spot and forward foreign currency exchange transactions to reduce the risk inherent in fluctuations in the exchange rate between one currency and another when securities are purchased or sold on a when-issued or delayed-delivery basis.

The Fund may enter into reverse repurchase agreements with banks and securities dealers. A reverse repurchase agreement is a repurchase agreement in which the Fund is the seller of, rather than the investor in, securities and agrees to repurchase them at an agreed-upon time and price. Use of a reverse repurchase agreement may be preferable to a regular sale and later repurchase of securities because it avoids certain market risks and transaction costs.

At the time when the Fund enters into a binding obligation to purchase securities on a when-issued basis or enters into a reverse repurchase agreement, liquid assets (cash, U.S. Government securities or other "high-grade" debt obligations) of the Fund having a value at least as great as the purchase price of the securities to be purchased will be segregated on the books of the Fund and held by the custodian throughout the period of the obligation. The use of these investment strategies may increase net asset value fluctuation.

ILLIQUID SECURITIES

The Fund may invest up to 15% of its managed assets in securities that, at the time of investment, are illiquid (determined using the Commission's standard applicable to investment companies, i.e., securities that cannot be disposed of within 7 days in the ordinary course of business at approximately the value at which the Fund has valued the securities). The Fund may invest without limitation in securities that have not been registered for public sale, but that are eligible for purchase and sale by certain qualified institutional buyers. Calamos, under the supervision of the Board of Trustees, will determine whether securities purchased under Rule 144A are illiquid (that is, not readily marketable) and thus subject to the Fund's limit on investing no more than 15% of its managed assets in illiquid securities. Investments in Rule 144A Securities could have the effect of increasing the amount of the Fund's assets invested in illiquid securities if qualified institutional buyers are unwilling to purchase these Rule 144A Securities. Illiquid securities may be difficult to dispose of at a fair price at the times when the Fund believes it is desirable to do so. The market price of illiquid securities generally is more volatile than that of more liquid securities, which may adversely affect the price that the Fund pays for or recovers upon the sale of illiquid securities. Illiquid securities are also more difficult to value and Calamos' judgment may play a greater role in the valuation process. Investment of the Fund's assets in illiquid securities may restrict the Fund's ability to take advantage of market opportunities. The risks associated with illiquid securities may be particularly acute in situations in which the Fund's operations require cash and could result in the Fund borrowing to meet its short-term needs or incurring losses on the sale of illiquid securities.

The Fund may invest in bonds, corporate loans, convertible securities, preferred stocks and other securities that lack a secondary trading market or are otherwise considered illiquid. Liquidity of a security relates to the ability to easily dispose of the security and the price to be obtained upon disposition of the security, which may be less than would be obtained for a comparable more liquid security. Such investments may affect the Fund's ability to realize the net asset value in the event of a voluntary or involuntary liquidation of its assets.

S-17

TEMPORARY DEFENSIVE INVESTMENTS

The Fund may make temporary investments without limitation when Calamos determines that a defensive position is warranted. Such investments may be in money market instruments, consisting of obligations of, or guaranteed as to principal and interest by, the U.S. Government or its agencies or instrumentalities; certificates of deposit, bankers' acceptances and other obligations of domestic banks having total assets of at least $500 million and that are regulated by the U.S. Government, its agencies or instrumentalities; commercial paper rated in the highest category by a recognized rating agency; and repurchase agreements.

REPURCHASE AGREEMENTS

As part of its strategy for the temporary investment of cash, the Fund may enter into "repurchase agreements" pertaining to U.S. Government securities with member banks of the Federal Reserve System or primary dealers (as designated by the Federal Reserve Bank of New York) in such securities. A repurchase agreement arises when the Fund purchases a security and simultaneously agrees to resell it to the vendor at an agreed upon future date. The resale price is greater than the purchase price, reflecting an agreed upon market rate of return that is effective for the period of time the Fund holds the security and that is not related to the coupon rate on the purchased security. Such agreements generally have maturities of no more than seven days and could be used to permit the Fund to earn interest on assets awaiting long term investment. The Fund requires continuous maintenance by the custodian for the Fund's account in the Federal Reserve/Treasury Book Entry System of collateral in an amount equal to, or in excess of, the market value of the securities that are the subject of a repurchase agreement. Repurchase agreements maturing in more than seven days are considered illiquid securities. In the event of a bankruptcy or other default of a seller of a repurchase agreement, the Fund could experience both delays in liquidating the underlying security and losses, including: (a) possible decline in the value of the underlying security during the period while the Fund seeks to enforce its rights thereto; (b) possible subnormal levels of income and lack of access to income during this period; and (c) expenses of enforcing its rights.

PREFERRED SHARES

The Fund may invest in preferred shares. The preferred shares that the Fund will invest in will typically be convertible securities. Preferred shares are equity securities, but they have many characteristics of fixed income securities, such as a fixed dividend payment rate and/or a liquidity preference over the issuer's common shares.

S-18

REAL ESTATE INVESTMENT FUNDS ("REITS") AND ASSOCIATED RISK FACTORS

REITs are pooled investment vehicles which invest primarily in income producing real estate or real estate related loans or interests. REITs are generally classified as equity REITs, mortgage REITs or a combination of equity and mortgage REITs. Equity REITs invest the majority of their assets directly in real property and derive income primarily from the collection of rents. Equity REITs can also realize capital gains by selling properties that have appreciated in value. Mortgage REITs invest the majority of their assets in real estate mortgages and derive income from the collection of interest payments. REITs are not taxed on income distributed to shareholders provided they comply with the applicable requirements of the Internal Revenue Code of 1986, as amended (the "Code"). The Fund will indirectly bear its proportionate share of any management and other expenses paid by REITs in which it invests in addition to the expenses paid by the Fund. Debt securities issued by REITs are, for the most part, general and unsecured obligations and are subject to risks associated with REITs.

Investing in REITs involves certain unique risks in addition to those risks associated with investing in the real estate industry in general. An equity REIT may be affected by changes in the value of the underlying properties owned by the REIT. A mortgage REIT may be affected by changes in interest rates and the ability of the issuers of its portfolio mortgages to repay their obligations. REITs are dependent upon the skills of their managers and are not diversified. REITs are generally dependent upon maintaining cash flows to repay borrowings and to make distributions to shareholders and are subject to the risk of default by lessees or borrowers. REITs whose underlying assets are concentrated in properties used by a particular industry, such as health care, are also subject to risks associated with such industry.

REITs (especially mortgage REITs) are also subject to interest rate risks. When interest rates decline, the value of a REIT's investment in fixed rate obligations can be expected to rise. Conversely, when interest rates rise, the value of a REIT's investment in fixed rate obligations can be expected to decline. If the REIT invests in adjustable rate mortgage loans the interest rates on which are reset periodically, yields on a REIT's investments in such loans will gradually align themselves to reflect changes in market interest rates. This causes the value of such investments to fluctuate less dramatically in response to interest rate fluctuations than would investments in fixed rate obligations.

REITs may have limited financial resources, may trade less frequently and in a limited volume and may be subject to more abrupt or erratic price movements than larger company securities. Historically REITs have been more volatile in price than the larger capitalization stocks included in Standard & Poor's 500 Stock Index.

OTHER INVESTMENT COMPANIES

The Fund may invest in the securities of other investment companies to the extent that such investments are consistent with the Fund's investment objective and policies and permissible under the Investment Company Act of 1940, as amended (the "1940 Act"). Under the 1940 Act, the Fund may not acquire the securities of other domestic or non-U.S. investment companies if, as a result,
(i) more than 10% of the Fund's total assets would be invested in securities of other investment companies, (ii) such purchase would result in more than 3% of the total outstanding voting securities of any one investment company being held by the Fund, or (iii) more than 5% of the Fund's total assets would be invested in any one investment company. These limitations do not apply to the purchase of shares of any investment company in connection with a merger, consolidation, reorganization or acquisition of substantially all the assets of another investment company.

The Fund, as a holder of the securities of other investment companies, will bear its pro rata portion of the other investment companies' expenses, including advisory fees. These expenses are in addition to the direct expenses of the Fund's own operations.

S-19

INVESTMENT RESTRICTIONS

The following are the Fund's fundamental investment restrictions. These restrictions may not be changed without the approval of the holders of a majority of the Fund's outstanding voting securities (which for this purpose and under the 1940 Act means the lesser of (i) 67% of the common shares represented at a meeting at which more than 50% of the outstanding common shares are represented or (ii) more than 50% of the outstanding common shares). If the Fund were to issue a class of preferred shares, the investment restrictions could not be changed without the approval of a majority of the outstanding common and preferred shares, voting together as a class, and the approval of a majority of the outstanding preferred shares, voting separately by class.

The Fund may not:

(1) Issue senior securities, except as permitted by the 1940 Act and the rules and interpretive positions of the SEC thereunder.

(2) Borrow money, except as permitted by the 1940 Act and the rules and interpretive positions of the SEC thereunder.

(3) Invest in real estate, except that the Fund may invest in securities of issuers that invest in real estate or interests therein, securities that are secured by real estate or interests therein, securities of real estate investment funds and mortgage-backed securities.

(4) Make loans, except by the purchase of debt obligations, by entering into repurchase agreements or through the lending of portfolio securities and as otherwise permitted by the 1940 Act and the rules and interpretive positions of the SEC thereunder.

(5) Invest in physical commodities or contracts relating to physical commodities.

(6) Act as an underwriter, except as it may be deemed to be an underwriter in a sale of securities held in its portfolio.

(7) Make any investment inconsistent with the Fund's classification as a diversified investment company under the 1940 Act and the rules and interpretive positions of the SEC thereunder.

(8) Concentrate its investments in securities of companies in any particular industry as defined in the 1940 Act and the rules and interpretive positions of the SEC thereunder.

All other investment policies of the Fund are considered non-fundamental and may be changed by the Board of Trustees without prior approval of the Fund's outstanding voting shares.

Currently under the 1940 Act, the Fund is not permitted to issue preferred shares unless immediately after such issuance the net asset value of the Fund's portfolio is at least 200% of the liquidation value of the outstanding preferred shares (i.e., such liquidation value may not exceed 50% of the value of the Fund's total assets). In addition, currently under the 1940 Act, the Fund is not permitted to declare any cash dividend or other distribution on its common shares unless, at the time of such declaration, the net asset value of the Fund's portfolio (determined after deducting the amount of such dividend or distribution) is at least 200% of such liquidation value. Currently under the 1940 Act, the Fund is not permitted to incur indebtedness unless immediately after such borrowing the Fund has asset coverage of at least 300% of the aggregate outstanding principal balance of indebtedness (i.e., such indebtedness may not exceed 33 1/3% of the value of the Fund's total assets). Additionally, currently under the 1940 Act, the Fund may not declare any dividend or other distribution upon any class of its shares, or purchase any such shares, unless the aggregate indebtedness of the Fund has, at the time of the declaration of any such dividend or distribution or at the time of any such purchase, an asset coverage of at least 300% after deducting the amount of such dividend, distribution, or purchase price, as the case may be.

Currently under the 1940 Act, the Fund is not permitted to lend money or property to any person, directly or indirectly, if such person controls or is under common control with the Fund, except for a loan from the Fund to a company which owns all of the outstanding securities of the Fund, except directors' qualifying shares.

Currently, under interpretive positions of the SEC, the Fund may not have on loan at any time Securities representing more than one third of its total assets.

Currently under the 1940 Act, a "senior security" does not include any promissory note or evidence of indebtedness where such loan is for temporary purposes only and in an amount not exceeding 5% of the value of the total assets of the issuer at the time the loan is made. A loan is presumed to be for temporary purposes if it is repaid within sixty days and is not extended or renewed.

Currently, the Fund would be deemed to "concentrate" in a particular industry if it invested 25% or more of its total assets in that industry.

Currently under the 1940 Act, a "diversified company" means a management company which meets the following requirements: at least 75% of the value of its total assets is represented by cash and cash items (including receivables), government securities, securities of other investment companies, and other securities for the purposes of this calculation limited in respect of any one issuer to an amount not greater in value than 5% of the value of the total assets of such management company and not more than 10% of the outstanding voting securities of such issuer.

Under the 1940 Act, the Fund may invest up to 10% of its total assets in the aggregate in shares of other investment companies and up to 5% of its total assets in any one investment company, provided the investment does not represent more than 3% of the voting stock of the acquired investment company at the time such shares are purchased. As a shareholder in any investment company, the Fund will bear its ratable share of that investment company's expenses, and would remain subject to payment of the Fund's advisory fees and other expenses with respect to assets so invested. Holders of common shares would therefore be subject to duplicative expenses to the extent the Fund invests in other investment companies. In addition, the securities of other investment companies may also be leveraged and will therefore be subject to the same leverage risks described herein and in the Prospectus. As described in the prospectus in the section entitled "Risk Factors," the net asset value and market value of leveraged shares will be more volatile and the yield to shareholders will tend to fluctuate more than the yield generated by unleveraged shares.

In addition, to comply with federal income tax requirements for qualification as a "regulated investment company," the Fund's investments will be limited by both an income and an asset test. See "U.S. Federal Income Tax Matters."

As a non-fundamental policy, the Fund may not issue preferred shares, borrow money or issue debt securities in an aggregate amount exceeding 38% of the Fund's total assets.

MANAGEMENT OF THE FUND

TRUSTEES AND OFFICERS

The Fund's Board of Trustees provides broad supervision over the Fund's affairs. The officers of the Fund are responsible for the Fund's operations. The Fund's trustees ("Trustees") and officers are listed below, together with their age, positions held with the Fund, term of office and length of service and principal occupations during the past five years. Asterisks indicates those Trustees who are interested persons of the Fund within the meaning of the 1940 Act, and they are referred to as "Interested Trustees". Trustees who are not interested persons of the Fund are referred to as "Independent Trustees". Each of the Trustees serves as a Trustee of other investment companies (10 U.S. registered investment portfolios in total) for which Calamos serves as investment adviser (collectively, the "Calamos Funds"). The address for all Trustees and all officers of the Fund is 1111 East Warrenville Road, Naperville, Illinois 60563-1493.

S-20

                                                                                                                     NUMBER OF
                                                  TERM OF                                                          PORTFOLIOS IN
                            POSITIONS            OFFICE AND         PRINCIPAL OCCUPATION DURING PAST FIVE          FUND COMPLEX
  NAME AND AGE              HELD WITH            LENGTH OF          YEARS AND OTHER DIRECTORSHIPS HELD BY          OVERSEEN BY
AT MARCH 31, 2003           THE FUND              SERVICE                        THE TRUSTEE                         TRUSTEE
-----------------           --------              -------                        -----------                         -------
INTERESTED TRUSTEES:

*John P. Calamos (62)        Trustee and      Trustee since         President, Calamos Holdings, Inc.,                  10
                             President        March 2003. Term      Calamos and Calamos Financial Services,
                                              expires in 2005.      Inc. ("CFS"); President of the Calamos
                                                                    Funds.

*Nick P. Calamos (41)        Trustee          Trustee since         Senior Executive Vice President, Calamos            10
                                              March 2003. Term      Holdings, Inc., Calamos and CFS; Vice
                                              expires in 2004.      President of the Calamos Funds.
INDEPENDENT TRUSTEES:

Richard J. Dowen (58)        Trustee          Trustee since         Chair and Professor of Finance, Northern            10
                                              March 2003. Term      Illinois University.
                                              expires in 2004.

Joe F. Hanauer (66)          Trustee          Trustee since         Director, MAF Bancorp (banking); Director,          10
                                              March 2003. Term      Homestore.com, Inc., (Internet provider of
                                              expires in 2006.      real estate information and products);
                                                                    Director, Combined Investments, L.P.
                                                                    (investment management); Director, Loopnet,
                                                                    Inc. (internet company).

+Weston W. Marsh (53)        Trustee          Trustee since         Partner, Freeborn & Peters (law firm);              10
                                              March 2003. Term      Director, Telesource International
                                              expires in 2005.

John E. Neal (53)            Trustee          Trustee since         Managing Director, Bank One Capital                 10
                                              March 2003. Term      Markets (investment banking) (2000-2001);
                                              expires in 2006.      Executive Vice President and Head of
                                                                    Real Estate Department, Bank One (1998-2000)
                                                                    President, Kemper Mutual Funds, prior
                                                                    thereto.

William R. Rybak (52)        Trustee          Trustee since         Executive Vice President and CFO, Van               10
                                              March 2003. Term      Kampen Investments, Inc. (and subsidiaries)
                                              expires in 2005.      (investment manager) (1986-2000); Director,
                                                                    Alliance Bancorp (formerly Hinsdale
                                                                    Financial Corporation) (savings & loan
                                                                    holding company) (1986-2001); Director,
                                                                    Howe Barnes Investments (since January
                                                                    2002).

FUND OFFICERS:

Rhowena Blank (35)           Treasurer        Since                 Treasurer of the Calamos Funds; Vice
                                              March 2003.           President-Operations, Calamos (since 1999);
                                              Serves at the         Vice President, CFS (since 2000); Director of
                                              discretion of the     Operations, Christian Brothers Investment
                                              Board.                Services (1998-1999); and Audit Manager,
                                                                    Ernst & Young, LP (1994-1998).

Patrick H. Dudasik (48)      Vice President   Since                 Vice President of the Calamos Funds (since 2001);
                                              March 2003.           Executive Vice President, Chief Financial
                                              Serves at the         and Administrative Officer and Treasurer
                                              discretion of the     of Calamos Holdings, Inc., Calamos and
                                              Board.                CFS (since 2001); Chief Financial
                                                                    Officer, David Gomez and Associates, Inc.
                                                                    (executive search firm)
                                                                    (1998-2001); and Chief Financial Officer,
                                                                    Scudder Kemper Investments, Inc., prior
                                                                    thereto.

James S. Hamman, Jr. (33)    Secretary        Since                 Secretary of the Calamos Funds;
                                              March 2003.           Executive Vice President and General
                                              Serves at the         Counsel, Calamos Holdings, Inc., Calamos
                                              discretion of the     and CFS (since 1998).
                                              Board.

Jeff Lotito (31)             Assistant        Since                 Assistant Treasurer of the Calamos Funds (since 2000);
                             Treasurer        March 2003.           Operations Manager, CFS (since 2000);
                                              Serves at the         Manager-Fund Administration, Van Kampen Investments, Inc.
                                              discretion of the     (1999-2000); Supervisor-Corporate
                                              Board.                Accounting, Stein Roe and Farnham (investment manager)
                                                                    (1998-1999); and Supervisor-Financial
                                                                    Reporting, Scudder Kemper Investments,
                                                                    Inc. prior thereto.

Ian J. McPheron (32)        Assistant        Since                  Associate Counsel and Director of Compliance
                            Secretary        June 2003.             of Calamos and CFS (since 2002);
                                             Serves at the          Associate Gardner, Carton & Douglas (law firm)
                                             discretion of the      (2002); Vice President, Associate General Counsel
                                             Board.                 and Assistant Secretary Van Kampen Investments, Inc.
                                                                    (2000-2002); Associate Wildman, Harrold, Allen & Dixon
                                                                    (1997-2000).


* John P. Calamos and Nick P. Calamos are trustees who are "interested persons" of the Fund as defined in the Investment Company Act of 1940 because of their position with Calamos. Nick P. Calamos is the nephew of John P. Calamos.

+        Mr. Marsh is a partner at a law firm that has performed work
         for John P. Calamos, the chief executive and a controlling person of
         Calamos (such work was not with respect to 1940 Act or Investment
         Advisers Act of 1940 matters). Upon the advice of counsel to the Fund,
         the Fund does not believe that Mr. Marsh is an "interested person" of
         Calamos.

         The Fund's Board of Trustees consists of seven members. The term of

one class expires each year commencing with the first annual meeting following this public offering and no term shall continue for more than three years after the applicable election. The terms of Nick P. Calamos and Richard J. Dowen expire at the first annual meeting following this public offering, the terms of John P. Calamos, Weston W. Marsh and William Rybak expire at the second annual meeting, and the terms of Joe F. Hanauer and John E. Neal

S-21

expire at the third annual meeting. Subsequently, each class of Trustees will stand for election at the conclusion of its respective term. Such classification may prevent replacement of a majority of the Trustees for up to a two-year period. Each officer serves until his or her successor is chosen and qualified or until his or her resignation or removal by the Board of Trustees.

S-22

COMMITTEES OF THE BOARD OF TRUSTEES. The Fund's Board of Trustees currently has three standing committees:

EXECUTIVE COMMITTEE. Messrs. John Calamos and Nick Calamos are members of the Executive Committee, which has authority during intervals between meetings of the Board of Trustees to exercise the powers of the board, with certain exceptions.

AUDIT COMMITTEE. Messrs. Dowen, Hanauer, Neal and Rybak serve on the Audit Committee. The Audit Committee recommends independent auditors to the trustees, monitors the auditors' performance, reviews the results of the Fund's audit, and responds to other matters deemed appropriate by the Board of Trustees.

GOVERNANCE COMMITTEE. Messrs. Dowen, Hanauer, Neal and Rybak serve on the Governance Committee. The Governance Committee oversees the independence and effective functioning of the Board of Trustees and endeavors to be informed about good practices for fund boards. The members of the Governance Committee who are not interested persons of the Fund make recommendations to the Board of Trustees regarding candidates for election as non-interested Trustees. The Governance Committee will not consider shareholder recommendations regarding candidates for election as Trustees.

In addition to the above committees, there is a pricing committee comprised of officers of the Fund and employees of Calamos.

The Fund's Agreement and Declaration of Trust provides that the Fund will indemnify the Trustees and officers against liabilities and expenses incurred in connection with any claim in which they may be involved because of their offices with the Fund, unless it is determined in the manner specified in the Agreement and Declaration of Trust that they have not acted in good faith in the reasonable belief that their actions were in the best interests of the Fund or that such indemnification would relieve any officer

S-23

or Trustee of any liability to the Fund or its shareholders by reason of willful misfeasance, bad faith, gross negligence or reckless disregard of his or her duties.

COMPENSATION OF OFFICERS AND TRUSTEES

The Fund pays no salaries or compensation to any of its officers or to the Trustees who are affiliated persons of Calamos.

The following table sets forth certain information with respect to the compensation paid to each Trustee by the Fund and the Calamos Funds as a group. Compensation from the Fund is for the current calendar year and is estimated. Total compensation from the Calamos Funds as a group is for the calendar year ended December 31, 2002.

                       ESTIMATED
                       AGGREGATE
                      COMPENSATION         TOTAL COMPENSATION FROM THE FUND AND
NAME OF TRUSTEE        FROM FUND                  OTHER CALAMOS FUNDS(9)**
---------------       ------------         ------------------------------------
John P. Calamos         $    0                         $     0
Nick P. Calamos              0                               0
Richard. J. Dowen        3,425                          44,000+
Joe F. Hanauer           3,425                          44,000
Weston W. Marsh*         3,425                          35,250
John E. Neal             3,425                          44,000+
William Rybak*           3,425                          35,250

+ Includes fees that may have been deferred during the year pursuant to a deferred compensation plan with Calamos Investment Trust. Deferred amounts are treated as though such amounts have been invested and reinvested in shares of one or more of the Calamos Funds selected by the trustee. As of December 31, 2002, the values of Messrs. Dowen's and Neal's deferred compensation accounts were $32,195 and $44,693, respectively.

* Messrs. Marsh and Rybak were appointed trustees of the Calamos Investment Trust and Calamos Advisors Trust in March 2002.

** The Fund Complex includes the Calamos Investment Trust, the Calamos Advisors Trust, the Calamos Convertibles Opportunities and Income Fund and the Calamos Convertibles and High Income Fund.

The Fund has adopted a deferred compensation plan (the "Plan"). Under the Plan, a Trustee who is not an "interested person" of Calamos and who has elected to participate in the Plan ("participating Trustees") may defer receipt of all or a portion of his compensation from the Fund in order to defer payment of income taxes or for other reasons. The deferred compensation payable to the participating Trustee is credited to the Trustee's deferral account as of the business day such compensation would have been paid to the Trustee. The value of a Trustee's deferred compensation account at any time is equal to what would be the value if the amounts credited to the account had instead been invested in shares of one or more of the portfolios of Calamos Investment Trust as designated by the Trustee. Thus, the value of the account increases with contributions to the account or with increases in the value of the measuring shares, and the value of the account decreases with withdrawals from the account or with declines in the value of the measuring shares. If a participating trustee retires, the Trustee may elect to receive payments under the plan in a lump sum or in equal installments over a period of five years. If a participating Trustee dies, any amount payable under the Plan will be paid to the Trustee's beneficiaries.

OWNERSHIP OF SHARES OF THE FUND AND OTHER CALAMOS FUNDS

The following table indicates the value of shares that each Trustee beneficially owns in the Fund and the Calamos Funds in the aggregate. The value of shares of the Calamos Funds is determined on the basis of the net asset value of the class of shares held as of December 31, 2002. The value of the shares held are stated in ranges in accordance with the requirements of the Securities and Exchange Commission (the "Commission"). The table reflects the Trustee's beneficial ownership of shares of the Calamos Funds. Beneficial ownership is determined in accordance with the rules of the SEC.

                                                                     AGGREGATE DOLLAR RANGE OF EQUITY
                                            DOLLAR RANGE OF            SECURITIES IN ALL REGISTERED
                                           EQUITY SECURITIES           INVESTMENT COMPANIES IN THE
                NAME OF TRUSTEE               IN THE FUND                     CALAMOS FUNDS
                ---------------            -----------------         --------------------------------
INTERESTED TRUSTEES:
John P. Calamos........................          None                         $  over 100,000
Nick P. Calamos........................          None                            over 100,000

NON-INTERESTED TRUSTEES:
Richard. J. Dowen......................          None                          50,001 - 100,000
Joe F. Hanauer.........................          None                                None
Weston W. Marsh........................          None                                None
John E. Neal...........................          None                            over 100,000
William Rybak..........................          None                                None

The officers and Trustees of the Fund, as a group, are less than 1% of the Fund's Securities.

S-24

CODE OF ETHICS

The Fund and Calamos have adopted a code of ethics under Rule 17j-1 of the 1940 Act which is applicable to officers, directors/Trustees and designated employees of Calamos and CFS. Employees of Calamos and CFS are permitted to make personal securities transactions, including transactions in securities that the Fund may purchase, sell or hold, subject to requirements and restrictions set forth in the code of ethics of Calamos and CFS. The code of ethics contains provisions and requirements designed to identify and address certain conflicts of interest between personal investment activities of Calamos and CFS employees and the interests of investment advisory clients such as the Fund. Among other things, the code of ethics prohibits certain types of transactions absent prior approval, imposes time periods during which personal transaction of duplicate broker confirmations and statements and quarterly reporting of securities transactions. Additional restrictions apply to portfolio managers, traders, research analysts and others involved in the investment advisory process. Exceptions to these and other provisions of the code of ethics may be granted in particular circumstances after review by appropriate personnel. The code of ethics can be reviewed and copied at the Commission's Public Reference Room in Washington, D.C. Information on the operation of the Public Reference Room may be obtained by calling the Commission at 1-202-942-8090. The code of ethics is also available on the EDGAR Database on the Commission's Internet site at http://www.sec.gov, and copies of the code of ethics may be obtained, after paying a duplicating fee, by electronic request at the following e-mail address: publicinfo@sec.gov, or by writing the Commission's Public Reference Section, Washington, D.C. 20549-0102.

PROXY VOTING POLICY

The Fund has delegated proxy voting responsibilities to Calamos, subject to the Board's general oversight. The Fund expects Calamos to vote proxies related to the Fund's portfolio securities for which the Fund has voting authority consistent with the Fund's best economic interests. Calamos has adopted its own Proxy Voting Policies and Procedures ("Policies"). The Policies address, among other things, conflicts of interest that may arise between the interests of the Fund, and the interests of the adviser and its affiliates, including the Fund's principal underwriter.

The following is a summary of the proxy voting Policies used by Calamos to follow in voting proxies.

To assist it in voting proxies, Calamos has established a Committee comprised of members of its Portfolio Management and Research Departments. The committee and/or its members will vote proxies using the following guidelines.

In general, if Calamos believes that a company's management and board have interests sufficiently aligned with the Fund's interest, Calamos will vote in favor of proposals recommended by a company's board. More specifically, Calamos seeks to ensure that the board of directors of a company is sufficiently aligned with security holders' interests and provides proper oversight of the company's management. In many cases this may be best accomplished by having a majority of independent board members. Although Calamos will examine board member elections on a case-by-case basis, Calamos will generally vote for the election of directors that would result in a board comprised of a majority of independent directors.

Because of the enormous variety and complexity of transactions that are presented to shareholders, such as mergers, acquisitions, reincorporations, adoptions of anti-take over measures (including adoption of a shareholder rights plan, requiring supermajority voting on particular issues, adoption of fair price provisions, issuance of blank check preferred stocks and the creation of a separate class of stock with unequal voting rights), changes to capital structures (including authorizing additional shares, repurchasing stock or approving a stock split), executive compensation and option plans, that occur in a variety of industries, companies and market cycles, it is extremely difficult to foresee exactly what would be in the best interests of the Fund in all circumstances. Moreover, voting on such proposals involves considerations unique to each transaction. Accordingly, Calamos will vote on a case-by-case basis on proposals presenting these transactions.

Finally, Calamos has established procedures to help resolve conflicts of interests that might arise when voting proxies for the Fund. This procedure provides that the Committee, along with Calamos' Legal Department, will examine conflicts of interests with the Fund of which Calamos is aware and seek to resolve such conflicts in the best interests of the Fund, irrespective of any such conflict.

You may obtain a copy of the Calamos' Policies by calling (800) 582-6959, by visiting its website at www.calamos.com or by writing Calamos at:
Calamos Investments, Attn: Client Services, 111 East Warrenville Road, Naperville, IL 60653.

INVESTMENT ADVISER AND INVESTMENT MANAGEMENT AGREEMENT

Subject to the overall authority of the board of trustees, Calamos provides the Fund with investment research, advice and supervision and furnishes continuously an investment program for the Fund. Calamos is a wholly-owned subsidiary of Holdings, Inc. Holdings, Inc. is controlled by John P. Calamos, who has been engaged in the investment advisory business since 1977. In addition, Calamos furnishes for use of the Fund such office space and facilities as the Fund may require for its reasonable needs and supervises the business and affairs of the Fund and provides the following other services on behalf of the Fund and not provided by persons not a party to the investment management agreement: (i) preparing or assisting in the preparation of reports to and meeting materials for the Trustees; (ii) supervising, negotiating contractual arrangements with, to the extent appropriate, and monitoring the performance of, accounting agents, custodians, depositories, transfer agents and pricing agents, accountants, attorneys, printers, underwriters, brokers and dealers, insurers and other persons in any capacity deemed to be necessary or desirable to Fund operations; (iii) assisting in the preparation and making of filings with the Commission and other regulatory and self-regulatory organizations, including, but not limited to, preliminary and definitive proxy materials, amendments to the Fund's registration statement on Form N-2 and semi-annual reports on Form N-SAR; (iv) overseeing the tabulation of proxies by the Fund's transfer agent;
(v) assisting in the preparation and filing of the Fund's federal, state and local tax returns; (vi) assisting in the preparation and filing of the Fund's federal excise tax return pursuant to Section 4982 of the Code; (vii) providing assistance with investor and public relations matters; (viii) monitoring the valuation of portfolio securities and the calculation of net asset value; (ix) monitoring the registration of shares of beneficial interest of the Fund under applicable federal and state securities laws; (x) maintaining or causing to be maintained for the Fund all books, records and reports and any other information required under the 1940 Act, to the extent that such books, records and reports and other information are not maintained by the Fund's custodian or other agents of the Fund; (xi) assisting in establishing the accounting policies of the Fund;
(xii) assisting in the resolution of accounting issues that may arise with respect to the Fund's operations and consulting with the Fund's independent accountants, legal counsel and the Fund's other agents as necessary in connection therewith; (xiii) reviewing the Fund's bills; (xiv) assisting the Fund in determining the amount of dividends and distributions available to be paid by the Fund to its shareholders, preparing and arranging for the printing of dividend notices to shareholders, and providing the transfer and dividend paying agent, the custodian, and the accounting agent with such information as is required for such parties to effect the payment of dividends and distributions; and (xv) otherwise assisting the Fund as it may reasonably request in the conduct of the Fund's business, subject to the direction and control of the Trustees.

Under the investment management agreement, the Fund pays to Calamos a fee based on the average weekly managed assets that is accrued daily and paid on a monthly basis. The fee paid by the Fund is at the annual rate of 0.80% of managed assets. Because the fees paid to Calamos are determined

S-25

on the basis of the Fund's managed assets, Calamos's interest in determining whether to leverage the Fund may differ from the interests of the Fund.

For the first eight years of the Fund's operations, Calamos has contractually agreed to waive its management fee in the annual amounts, and for the time periods, set forth below:

                                     FEE WAIVED (AS A                                          FEE WAIVED (AS A
        PERIOD ENDING              PERCENTAGE OF AVERAGE            PERIOD ENDING            PERCENTAGE OF AVERAGE
           JUNE 30                WEEKLY MANAGED ASSETS)               JUNE 30              WEEKLY MANAGED ASSETS)
        -------------             ----------------------            -------------           ----------------------
2003(1)....................                  0.10%           2008.......................               0.10%
2004.......................                  0.10%           2009.......................               0.07%
2005.......................                  0.10%           2010.......................               0.05%
2006.......................                  0.10%           2011.......................               0.03%
2007.......................                  0.10%


(1) From the commencement of operations.

Calamos has not agreed to waive any portion of its management fees beyond May 31, 2011.

Under the terms of its investment management agreement with the Fund, except for the services and facilities provided by Calamos as set forth therein, the Fund shall assume and pay all expenses for all other Fund operations and activities and shall reimburse Calamos for any such expenses incurred by Calamos. The expenses borne by the Fund shall include, without limitation: (a) organizational expenses of the Fund (including out-of-pocket expenses, but not including the Manager's overhead or employee costs); (b) fees payable to Calamos; (c) legal expenses; (d) auditing and accounting expenses; (e) maintenance of books and records that are required to be maintained by the Fund's custodian or other agents of the Fund; (f) telephone, telex, facsimile, postage and other communications expenses; (g) taxes and governmental fees; (h) fees, dues and expenses incurred by the Fund in connection with membership in investment company trade organizations and the expense of attendance at professional meetings of such organizations; (i) fees and expenses of accounting agents, custodians, subcustodians, transfer agents, dividend disbursing agents and registrars; (j) payment for portfolio pricing or valuation services to pricing agents, accountants, bankers and other specialists, if any; (k) expenses of preparing share certificates; (l) expenses in connection with the issuance, offering, distribution, sale, redemption or repurchase of securities issued by the Fund; (m) expenses relating to investor and public relations provided by parties other than Calamos; (n) expenses and fees of registering or qualifying shares of beneficial interest of the Fund for sale; (o) interest charges, bond premiums and other insurance expenses; (p) freight, insurance and other charges in connection with the shipment of the Fund's portfolio securities; (q) the compensation and all expenses (specifically including travel expenses relating to Fund business) of Trustees, officers and employees of the Fund who are not affiliated persons of Calamos; (r) brokerage commissions or other costs of acquiring or disposing of any portfolio securities of the Fund; (s) expenses of printing and distributing reports, notices and dividends to shareholders; (t) expenses of preparing and setting in type, printing and mailing prospectuses and statements of additional information of the Fund and supplements thereto; (u) costs of stationery; (v) any litigation expenses; (w) indemnification of Trustees and officers of the Fund; (x) costs of shareholders' and other meetings; (y) interest on borrowed money, if any; and (z) the fees and other expenses of listing the Fund's shares on the New York Stock Exchange or any other national stock exchange.

Unless earlier terminated as described below, the investment management agreement will remain in effect until August 1, 2004 and will continue in effect from year to year thereafter so long as such continuation is approved at least annually by (1) the board of trustees or the vote of a majority of the outstanding voting securities (as defined in the 1940 Act) of the Fund, and (2) a majority of the trustees

S-26

who are not interested persons of any party to the investment management agreement, cast in person at a meeting called for the purpose of voting on such approval. The investment management agreement may be terminated at any time, without penalty, by either the Fund or Calamos upon 60 days' written notice, and is automatically terminated in the event of its assignment as defined in the 1940 Act.

FACTORS CONSIDERED BY THE INDEPENDENT TRUSTEES IN APPROVING THE INVESTMENT MANAGEMENT AGREEMENT. The Fund's investment management agreement is required to be approved before it is entered into and thereafter annually both by the Board of Trustees and a majority of the Independent Trustees voting separately. The Independent Trustees have determined that the terms of the Fund's investment management agreement are fair and reasonable and that the agreement is in the Fund's best interests. The Independent Trustees believe that the investment management agreement will enable the Fund to enjoy high quality investment management services at a cost which they deem appropriate, reasonable and in the best interests of the Fund. In making such determinations, the Independent Trustees relied upon the assistance of counsel to the Independent Trustees.

In evaluating the investment management agreement, the Independent Trustees considered Calamos, its affiliates and their personnel, operations and financial condition. The Independent Trustees discussed with representatives of Calamos the Fund's operations and Calamos's ability to provide advisory and other services to the Fund. The Independent Trustees also reviewed, among other things:

- the investment performance of other Calamos funds with similar investment strategies;

- the proposed fees to be charged by Calamos for investment management services;

- the Fund's projected total operating expenses;

- the investment performance, fees and total expenses of investment companies with similar objectives and strategies managed by other investment advisers;

- the experience of the investment advisory and other personnel providing services to the Fund and the historical quality of the services provided by Calamos; and

The Independent Trustees considered the following as relevant to their recommendations: (1) the favorable history, reputation, qualification and background of Calamos, as well as the qualifications of its personnel and its financial condition; (2) that the fee and expense ratios of the Fund are reasonable given the quality of services expected to be provided and are comparable to the fee and expense ratios of similar investment companies; (3) the relative performance of other funds managed by Calamos with similar objectives compared to the results of other comparable investment companies and unmanaged indices; and (4) other factors that the Independent Trustees deemed relevant.

The use of the name "Calamos" in the name of the Fund is pursuant to licenses granted by Calamos, and the Fund has agreed to change the names to remove those references if Calamos ceases to act as investment adviser to the Fund.

FUND ACCOUNTANT

Under the terms of a fund accounting servicing agreement ("Fund Accounting Servicing Agreement"), U.S. Bancorp Fund Services, LLC ("USB") provides certain administration and accounting services, including but not limited to, fund accounting and financial accounting services to the Fund and to the Calamos Investment Trust and Calamos Advisors Trust (the Fund, Calamos Investment Trust and Calamos Advisors Trust are collectively referred to as the "Calamos Funds"). For the services rendered to the Calamos Funds, USB receives fees based on the combined managed assets of the Calamos Funds ("Combined Assets"). Each fund of the Calamos Funds pays their pro rata share of the fees payable to USB described below based on relative managed assets of each fund.

Under the Fund Accounting Servicing Agreement, USB maintains portfolio records on a trade date plus one basis using security trade information; obtains prices from a pricing service and applies those prices to portfolio positions; identifies interest and dividend accrual balances as of each valuation date and calculates gross earnings on investments for the accounting period; determines gain/loss on security sales and identifies them as short-term or long-term; accounts for periodic distributions of gains or losses to shareholders and maintains undistributed gain or loss balances as of each valuation date; for each valuation date, calculates the expense accrual amounts as directed by the Fund as to methodology, rate or dollar amount; records payments for expenses upon receipt of written authorization from the Fund; accounts for expenditures and maintains expense accrual balances; provides expense accrual and payment reporting; accounts for fund share repurchases, tenders, sales, exchanges, transfers, dividend reinvestments, and other fund share activity; applies equalization accounting as directed by the Fund; determines net investment income for the Fund as of each valuation date and accounts for periodic distributions of earnings to shareholders and maintains undistributed net investment income balances as of each valuation date; maintains a general ledger and other accounts, books and financial records for the Fund; determines the NAV, per share earnings and other per share amounts reflective of fund operations; communicates the per share price to parties as agreed upon; prepares monthly reports that document the adequacy of accounting detail to support month-end ledger balances; maintains accounting records for the investment portfolio of the Fund to support the tax reporting required for IRS-defined regulated investment companies; maintains tax lot detail for the Fund's investment portfolio; calculates taxable gain/loss on security sales using the tax lot relief method designate by the Fund; provides the necessary financial information to support the taxable components of income and capital gains distributions to the Fund's transfer agent to support tax reporting to the shareholders; supports reporting to regulatory bodies and support financial statement preparation by making the Fund's accounting records available to the Fund, the SEC and outside auditors; maintains accounting records; reconciles cash and investment balances of the Fund with the Fund's custodian and provides the Fund with the beginning cash balance available for investment purposes; transmits or mails a copy of the portfolio valuation to the Fund; reviews the impact of current day's activity on a per share basis and reviews changes in market value; prepares monthly security transactions listings; supplies various statistical data as requested by the Fund; provides alternative verification of corporate actions for preferred securities and private placements; provides Morningstar/Lipper quarterly portfolio reporting and monthly NAV reporting; compares manual prices provided by Calamos to pricing vendor quotations; prepares monthly a reconciliation between the Fund's cash portfolio, NAV data delivery services, pre-tax and post-tax monthly performance calculations, and reporting and benchmark comparisons ("fund accounting services"). For providing the fund accounting services, USB receives a fee payable monthly at the annual rate of $750,000 on the first $2.5 billion of Combined Assets; 0.02% on the next $2.5 billion of Combined Assets; 0.01% on the next $2.5 billion of Combined Assets; 0.0075% on the next $2.5 billion of Combined Assets and 0.005% on Combined Assets above $10 billion ("fund accounting service fee").

Under the Fund Accounting Servicing Agreement, USB also provides: fund expense management; fund expense payment processing; expense accrual monitoring, analysis and modifications; expense reimbursement and management fee waiver coordination; 1099 MISC for the Board members and service providers; SEC yield calculations; deferred compensation plan monitoring; calculation of quarterly net investment income distributions and annual long-term capital gains distributions; year-end dividend disclosure information; tax adjustment calculation, tracking and reporting on all contingent debt obligations and on all trust preferred obligations; excise and fiscal distribution schedules; tax footnote information required for financial statements; preparation of all state and federal tax returns; and specialized calculation of amortization on convertible securities for financial statements; ("financial accounting services"). For providing financial accounting services, USB receives a fee payable monthly at the annual rate of 0.0200% on the first $1 billion of Combined Assets; 0.0150% on the next $1 billion of Combined Assets and 0.0125% on Combined Assets above $2 billion ("financial accounting service fee").

Management has proposed to the Boards of Trustees of the Calamos Funds, including the Fund, that Calamos provide the following financial accounting services to the Calamos Funds, rather than USB: management of expenses and expense payment processing; monitor the calculation of expense accrual amounts for any fund and make any necessary modifications; coordinate any expense reimbursement calculations and payment; calculate yields on the funds in accordance with rules and regulations of the SEC; calculate net investment income dividends and capital gains distributions; calculate track and report tax adjustments on all assets of each fund, including but not limited to contingent debt and preferred trust obligations; prepare excise tax and fiscal year distributions schedules; prepare tax information required for financial statement footnotes; prepare state and federal income tax returns; prepare specialized calculations of amortization on convertible securities; prepare year-end dividend disclosure information; monitor trustee deferred compensation plan accruals and valuations; and prepare Form 1099 information statements for Board members and service providers. For providing those financial accounting services, it is proposed that Calamos will receive a fee payable monthly at the annual rate of 0.0175% on the first $1 billion of Combined Assets; 0.0150% on the next $1 billion of Combined Assets; and 0.0110% on Combined Assets above $2 billion ("proposed financial accounting service fee"). Each fund of the Calamos Funds will pay its pro rata share of the proposed financial accounting service fee payable to Calamos based on relative managed assets of each fund.

Under management's proposal, Calamos would replace USB solely with respect to financial accounting services. Calamos would receive the proposed financial accounting service fee described above. Under the proposal, USB would continue to provide the fund accounting services described above and receive the fund accounting service fee described above and would not receive the financial accounting service fee described above. The Boards of Trustees at a meeting held on April 14, 2003 were supportive of management's proposal; however, as of the date hereof no final determination with respect to management's proposal has been made.

S-27

PORTFOLIO TRANSACTIONS

Portfolio transactions on behalf of the Fund effected on stock exchanges involve the payment of negotiated brokerage commissions. There is generally no stated commission in the case of securities traded in the over-the-counter markets, but the price paid by the Fund usually includes an undisclosed dealer commission or mark-up. In underwritten offerings, the price paid by the Fund includes a disclosed, fixed commission or discount retained by the underwriter or dealer.

In executing portfolio transactions, Calamos uses its best efforts to obtain for the Fund the most favorable combination of price and execution available. In seeking the most favorable combination of price and execution, Calamos considers all factors it deems relevant, including price, the size of the transaction, the nature of the market for the security, the amount of commission, the timing of the transaction taking into account market prices and trends, the execution capability of the broker-dealer and the quality of service rendered by the broker-dealer in other transactions.

The Trustees have determined that portfolio transactions for the Fund may be executed through Calamos Financial Services, Inc. ("CFS"), an affiliate of Calamos, if, in the judgment of Calamos, the use of CFS is likely to result in prices and execution at least as favorable to the Funds as those available from other qualified brokers and if, in such transactions, CFS charges the Fund commission rates consistent with those charged by CFS to comparable unaffiliated customers in similar transactions. The Board of Trustees, including a majority of the Trustees who are not Interested Trustees, has adopted procedures that are reasonably designed to provide that any commissions, fees or other remuneration paid to CFS are consistent with the foregoing standard. The Fund will not effect principal transactions with CFS.

Consistent with the Rules of Fair Practice of the National Association of Securities Dealers, Inc. and subject to seeking the most favorable combination of net price and execution available and such other policies as the Trustees may determine, Calamos may consider sales of shares of the Fund as a factor in the selection of broker-dealers to execute portfolio transactions for that Fund.

In allocating the Fund's portfolio brokerage transactions to unaffiliated broker-dealers, Calamos may take into consideration the research, analytical, statistical and other information and services provided by the broker-dealer, such as general economic reports and information, reports or analyses of particular companies or industry groups, market timing and technical information, and the availability of the brokerage firm's analysts for consultation. Although Calamos believes these services have substantial value, they are considered supplemental to Calamos's own efforts in the performance of its duties under the management agreement. As permitted by Section 28(e) of the Securities Exchange Act of 1934 ("1934 Act"), Calamos may cause the Fund to pay a broker-dealer that provides brokerage and research services an amount of commission for effecting a securities transaction for the Fund in excess of the commission that another broker-dealer would have charged for effecting that transaction if the amount is believed by Calamos to be reasonable in relation to the value of the overall quality of the brokerage and research services provided. Other clients of Calamos may indirectly benefit from the provision of these services to Calamos, and the Fund may indirectly benefit from services provided to Calamos as a result of transactions for other clients.

NET ASSET VALUE

Net asset value per share is determined as of the close of regular session trading on the New York Stock Exchange (usually 4:00 p.m., Eastern time), on the last business day in each week. Net asset value is calculated by dividing the value of all of the securities and other assets of the Fund, less its liabilities (including accrued expenses and indebtedness) and the aggregate liquidation value of any outstanding

S-28

preferred shares, by the total number of common shares outstanding. Currently, the net asset values of shares of publicly traded closed-end investment companies investing in debt securities are published in Barron's, the Monday edition of The Wall Street Journal and the Monday and Saturday editions of The New York Times.

The values of the securities in the Fund are based on market prices from the primary market in which they are traded. As a general rule, equity securities listed on a U.S. securities exchange or Nasdaq National Market are valued at the last quoted sale priced on the day the valuation is made. Bonds and other fixed-income securities that are traded over the counter and on an exchange will be valued according to the broadest and most representative market, and it is expected this will ordinarily be the over-the-counter market. The foreign securities held by the Fund are traded on exchanges throughout the world. Trading on these foreign securities exchanges is completed at various times throughout the day and often does not coincide with the close of trading on the New York Stock Exchange. The value of foreign securities is determined at the close of trading of the exchange on which the securities are traded or at the close of trading on the New York Stock Exchange, whichever is earlier. If market prices are not readily available or the Fund's valuation methods do not produce a value reflective of the fair value of the security, securities and other assets are priced at a fair value as determined by the Board of Trustees or a committee thereof.

ADDITIONAL INFORMATION CONCERNING THE AUCTIONS FOR PREFERRED SHARES

GENERAL

The Depository Trust Company ("DTC") will act as the Securities Depository with respect to the Preferred Shares. One certificate for all of the shares of each series will be registered in the name of Cede & Co., as nominee of the Securities Depository. Such certificate will bear a legend to the effect that such certificate is issued subject to the provisions restricting transfers of shares of the Preferred Shares contained in the Statement. The Fund will also issue stop-transfer instructions to the transfer agent for the Preferred Shares. Prior to the commencement of the right of holders of the Preferred Shares to elect a majority of the Fund's Trustees, as described under "Description of the Preferred Shares -- Voting Rights" in the prospectus, Cede & Co. will be the holder of record of the Preferred Shares and owners of such shares will not be entitled to receive certificates representing their ownership interest in such shares.

DTC, a New York-chartered limited purpose trust company, performs services for its participants, some of whom (and/or their representatives) own DTC. DTC maintains lists of its participants and will maintain the positions (ownership interests) held by each such participant in the Preferred Shares, whether for its own account or as a nominee for another person.

CONCERNING THE AUCTION AGENT

The auction agent (the "Auction Agent") will act as agent for the Fund in connection with the auctions of the Preferred Shares (the "Auctions"). In the absence of willful misconduct or gross negligence on its part, the Auction Agent will not be liable for any action taken, suffered, or omitted or for any error of judgment made by it in the performance of its duties under the auction agency agreement between the Fund and the Auction Agent and will not be liable for any error of judgment made in good faith unless the Auction Agent was grossly negligent in ascertaining the pertinent facts.

The Auction Agent may conclusively rely upon, as evidence of the identities of the holders of the Preferred Shares, the Auction Agent's registry of holders, and the results of Auctions and notices from any Broker-Dealer (or other person, if permitted by the Fund) with respect to transfers described under

S-29

"The Auction -- Secondary Market Trading and Transfers of the Preferred Shares" in the prospectus and notices from the Fund. The Auction Agent is not required to accept any such notice for an Auction unless it is received by the Auction Agent by 3:00 p.m., New York City time, on the business day preceding such Auction.

The Auction Agent may terminate its auction agency agreement with the Fund upon notice to the Fund on a date no earlier than 60 days after such notice or the date on which a successor Auction Agent is appointed by the Fund. If the auction agent should resign, the Fund will use its best efforts to enter into an agreement with a successor auction agent containing substantially the same terms and conditions as the auction agency agreement. The Fund may remove the Auction Agent provided that prior to such removal the Fund has entered into such an agreement with a successor Auction Agent.

BROKER-DEALERS

The Auction Agent after each Auction for the Preferred Shares will pay to each Broker-Dealer, from funds provided by the Fund, a service charge at the annual rate of 1/4 of 1% in the case of any auction immediately preceding a dividend period of less than one year, or a percentage agreed to by the Fund and the Broker-Dealer in the case of any Auction immediately preceding a dividend period of one year or longer, of the purchase price of the Preferred Shares placed by such Broker-Dealer at such auction. For the purposes of the preceding sentence, the Preferred Shares will be placed by a Broker-Dealer if such shares were (a) the subject of hold orders deemed to have been submitted to the Auction Agent by the Broker-Dealer and were acquired by such Broker-Dealer for its customers who are beneficial owners or (b) the subject of an order submitted by such Broker-Dealer that is (i) a submitted bid of an existing holder that resulted in the existing holder continuing to hold such shares as a result of the Auction or (ii) a submitted bid of a potential bidder that resulted in the potential holder purchasing such shares as a result of the auction or (iii) a valid hold order.

The Fund may request the Auction Agent to terminate one or more Broker-Dealer agreements at any time upon five days' notice, provided that at least one Broker-Dealer agreement is in effect after such termination.

The Broker-Dealer agreement provides that a Broker-Dealer (other than an affiliate of the Fund) may submit orders in Auctions for its own account, unless the Trust notifies all Broker-Dealers that they may no longer do so, in which case Broker-Dealers may continue to submit hold orders and sell orders for their own accounts. Any Broker-Dealer that is an affiliate of the Fund may submit orders in Auctions, but only if such orders are not for its own account. If a Broker-Dealer submits an order for its own account in any Auction, it might have an advantage over other bidders because it would have knowledge of all orders submitted by it in that Auction; such Broker-Dealer, however, would not have knowledge of orders submitted by other Broker-Dealers in that Auction.

REPURCHASE OF COMMON SHARES

The Fund is a closed-end investment company and as such its shareholders will not have the right to cause the Fund to redeem their shares. Instead, the Fund's common shares will trade in the open market at a price that will be a function of several factors, including dividend levels (which are in turn affected by expenses), net asset value, call protection, dividend stability, relative demand for and supply of such shares in the market, general market and economic conditions and other factors. Because shares of a closed-end investment company may frequently trade at prices lower than net asset value, the Fund's Board of Trustees may consider action that might be taken to reduce or eliminate any material discount from net asset value in respect of common shares, which may include the repurchase of such shares in the open market or in private transactions, the making of a tender offer for such shares, or the conversion of

S-30

the Fund to an open-end investment company. The Board of Trustees may decide not to take any of these actions. In addition, there can be no assurance that share repurchases or tender offers, if undertaken, will reduce market discount.

Notwithstanding the foregoing, at any time when the Fund's preferred shares are outstanding, the Fund may not purchase, redeem or otherwise acquire any of its common shares unless (1) all accumulated preferred shares dividends have been paid and (2) at the time of such purchase, redemption or acquisition, the net asset value of the Fund's portfolio (determined after deducting the acquisition price of the common shares) is at least 200% of the liquidation value of the outstanding preferred shares (expected to equal the original purchase price per share plus any accrued and unpaid dividends thereon). Any service fees incurred in connection with any tender offer made by the Fund will be borne by the Fund and will not reduce the stated consideration to be paid to tendering shareholders.

Subject to its investment restrictions, the Fund may borrow to finance the repurchase of shares or to make a tender offer. Interest on any borrowings to finance share repurchase transactions or the accumulation of cash by the Fund in anticipation of share repurchases or tenders will reduce the Fund's net income. Any share repurchase, tender offer or borrowing that might be approved by the Fund's Board of Trustees would have to comply with the Exchange Act, the 1940 Act and the rules and regulations thereunder.

Although the decision to take action in response to a discount from net asset value will be made by the Board of Trustees at the time it considers such issue, it is not currently anticipated that the Board of Trustees would authorize repurchases of common shares or a tender offer for such shares if: (1) such transactions, if consummated, would (a) result in the delisting of the common shares from the New York Stock Exchange, or (b) impair the Fund's status as a regulated investment company under the Code (which would make the Fund a taxable entity, causing the Fund's income to be taxed at the corporate level in addition to the taxation of shareholders who receive dividends from the Fund) or as a registered closed-end investment company under the 1940 Act; (2) the Fund would not be able to liquidate portfolio securities in an orderly manner and consistent with the Fund's investment objective and policies in order to repurchase shares; or (3) there is, in the board's judgment, any (a) material legal action or proceeding instituted or threatened challenging such transactions or otherwise materially adversely affecting the Fund, (b) general suspension of or limitation on prices for trading securities on the New York Stock Exchange, (c) declaration of a banking moratorium by federal or state authorities or any suspension of payment by United States or New York banks, (d) material limitation affecting the Fund or the issuers of its portfolio securities by federal or state authorities on the extension of credit by lending institutions or on the exchange of foreign currency, (e) commencement of war, armed hostilities or other international or national calamity directly or indirectly involving the United States, or (f) other event or condition which would have a material adverse effect (including any adverse tax effect) on the Fund or its shareholders if shares were repurchased.

The repurchase by the Fund of its shares at prices below net asset value will result in an increase in the net asset value of those shares that remain outstanding. However, there can be no assurance that share repurchases or tender offers at or below net asset value will result in the Fund's shares trading at a price equal to their net asset value. Nevertheless, the fact that the Fund's shares may be the subject of repurchase or tender offers from time to time, or that the Fund may be converted to an open-end investment company, may reduce any spread between market price and net asset value that might otherwise exist.

In addition, a purchase by the Fund of its common shares will decrease the Fund's total managed assets which would likely have the effect of increasing the Fund's expense ratio. Any purchase by the

S-31

Fund of its common shares at a time when preferred shares are outstanding will increase the leverage applicable to the outstanding common shares then remaining.

Before deciding whether to take any action if the common shares trade below net asset value, the Fund's Board of Trustees would likely consider all relevant factors, including the extent and duration of the discount, the liquidity of the Fund's portfolio, the impact of any action that might be taken on the Fund or its shareholders and market considerations. Based on these considerations, even if the Fund's shares should trade at a discount, the Board of Trustees may determine that, in the interest of the Fund and its shareholders, no action should be taken.

U.S. FEDERAL INCOME TAX MATTERS

The following is a summary discussion of certain U.S. federal income tax consequences that may be relevant to a shareholder that acquires, holds and/or disposes of Preferred Shares of the Fund. This discussion only addresses U.S. federal income tax consequences to U.S. shareholders who hold their shares as capital assets and does not address all of the U.S. federal income tax consequences that may be relevant to particular shareholders in light of their individual circumstances. This discussion also does not address the tax consequences to shareholders who are subject to special rules, including, without limitation, financial institutions, insurance companies, dealers in securities or foreign currencies, foreign holders, persons who hold their shares as or in a hedge against currency risk, a constructive sale, or conversion transaction, holders who are subject to the alternative minimum tax, or tax- exempt or tax-deferred plans, accounts, or entities. In addition, the discussion does not address any state, local, or foreign tax consequences. The discussion reflects applicable tax laws of the United States as of the date of this prospectus, which tax laws may be changed or subject to new interpretations by the courts or the Internal Revenue Service ("IRS") retroactively or prospectively. No attempt is made to present a detailed explanation of all U.S. federal income tax concerns affecting the Fund and its shareholders, and the discussion set forth herein does not constitute tax advice. INVESTORS ARE URGED TO CONSULT THEIR OWN TAX ADVISERS TO DETERMINE THE SPECIFIC TAX CONSEQUENCES TO THEM OF INVESTING IN THE FUND, INCLUDING THE APPLICABLE FEDERAL, STATE, LOCAL AND FOREIGN TAX CONSEQUENCES TO THEM AND THE EFFECT OF POSSIBLE CHANGES IN TAX LAWS.

The Fund intends to elect to be treated, and to qualify each year, as a "regulated investment company" under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"), so that it will not pay U.S. federal income tax on income and capital gains timely distributed to shareholders. If a Fund qualifies as a regulated investment company and distributes to its shareholders at least 90% of the sum of (i) its "investment company taxable income" as that term is defined in the Code (which includes, among other things, dividends, taxable interest, and the excess of any net short-term capital gains over net long-term capital losses as reduced by certain deductible expenses) without regard to the deduction for dividends paid and (ii) the excess of its gross tax-exempt interest, if any, over certain disallowed deductions, the Fund will be relieved of U.S. federal income tax on any income of the Fund, including long-term capital gains, distributed to shareholders. However, if the Fund retains any investment company taxable income or "net capital gain" (the excess of net long-term capital gain over net short-term capital loss), it will be subject to U.S. federal income tax at regular corporate rates on the amount retained. The Fund intends to distribute at least annually all or substantially all of its investment company taxable income, net tax-exempt interest, and net capital gain.

If for any taxable year the Fund does not qualify as a regulated investment company for U.S. federal income tax purposes, it would be treated as a U.S. corporation subject to U.S. federal income tax (currently at a maximum rate of 35%) and distributions to its shareholders would not be deductible by the Fund in computing its taxable income. In addition, in the event that the Fund does not so qualify, the Fund's distributions, to the extent derived from the Fund's current or accumulated earnings and profits, would generally constitute ordinary dividends, a portion of which may be eligible either for the dividends received deduction available to corporations or the reduced rate of taxation for "qualified dividend income" available to noncorporate shareholders.

S-32

Under the Code, the Fund will be subject to a nondeductible 4% federal excise tax on a portion of its undistributed ordinary income and capital gains for any year if it fails to meet certain distribution requirements with respect to that year. The Fund intends to make distributions in a timely manner and accordingly does not expect to be subject to this excise tax.

In order to qualify as a regulated investment company under Subchapter M of the Code, the Fund must, among other things, derive at least 90% of its gross income for each taxable year from dividends, interest, payments with respect to securities loans, gains from the sale or other disposition of stock, securities or foreign currencies, or other income (including gains from options, futures and forward contracts) derived with respect to its business of investing in such stock, securities or currencies (the "90% income test"). For purposes of the 90% income test, the character of income earned by certain entities in which the Fund invests that are not treated as corporations (e.g., partnerships) for U.S. federal income tax purposes will generally pass through to the Fund. Consequently, the Fund may be required to limit its equity investments in such entities that earn fee income, rental income or other nonqualifying income.

In addition to the 90% income test, the Fund must also diversify its holdings (commonly referred to as the "asset test") so that, at the end of each quarter of its taxable year (i) at least 50% of the market value of the Fund's total assets is represented by cash and cash items, U.S. government securities, securities of other regulated investment companies and other securities, with such other securities of any one issuer limited for the purposes of this calculation to an amount not greater in value than 5% of the value of the Fund's total assets and to not more than 10% of the outstanding voting securities of such issuer, and (ii) not more than 25% of the value of its total assets is invested in the securities of any one issuer (other than U.S. government securities or securities of other regulated investment companies) or of two or more issuers controlled by the Fund and engaged in the same, similar or related trades or businesses.

Dividends from investment company taxable income, which includes net investment income, net short-term capital gain in excess of net long-term capital loss and certain net foreign exchange gains, are taxable as ordinary income to the extent of the Fund's current and accumulated earnings and profits. Dividends from net capital gain (i.e. net long-term capital gain in excess of net short-term capital loss), if any, are taxable as long-term capital gains for U.S. federal income tax purposes without regard to the length of time the shareholder has held shares of the Fund. Dividends derived from "qualified dividend income" (i.e., generally, dividends paid by domestic corporations and certain foreign corporations), if any, will generally be subject to the tax rate equivalent to net capital gain. The U.S. federal income tax status of all distributions will be designated by the Fund and reported to the shareholders annually. Any dividend declared by the Fund as of a record date in October, November or December and paid during the following January will be treated for U.S. federal income tax purposes as received by shareholders on December 31 of the calendar year in which it is declared.

If the Fund retains any net capital gain, the Fund may designate the retained amount as undistributed capital gains in a notice to shareholders who, if subject to U.S. federal income tax on long-term capital gains (i) will be required to include in income, as long-term capital gain, their proportionate share of such undistributed amount, and (ii) will be entitled to credit their proportionate share of the tax paid by the Fund on the undistributed amount against their U.S. federal income tax liabilities, if any, and to claim refunds to the extent the credit exceeds such liabilities. For U.S. federal income tax purposes, the tax basis of shares owned by a shareholder of the Fund will be increased by the difference between the amount of undistributed net capital gain included in the shareholder's gross income and the tax deemed paid by the shareholders.

S-33

Foreign exchange gains and losses realized by the Fund in connection with certain transactions involving foreign currency-denominated debt securities, certain options and futures contracts relating to foreign currency, foreign currency forward contracts, foreign currencies, or payables or receivables denominated in a foreign currency are subject to Section 988 of the Code, which generally causes such gains and losses to be treated as ordinary income and losses and may affect the amount, timing and character of distributions to shareholders.

If the Fund acquires any equity interest (under proposed Treasury regulations, generally including not only stock but also an option to acquire stock such as is inherent in a convertible bond) in certain foreign corporations that receive at least 75% of their annual gross income from passive sources (such as interest, dividends, certain rents and royalties, or capital gains) or that hold at least 50% of their assets in investments producing such passive income ("passive foreign investment companies"), the Fund could be subject to U.S. federal income tax and additional interest charges on "excess distributions" received from such companies or on gain from the sale of stock in such companies, even if all income or gain actually received by the Fund is timely distributed to its shareholders. The Fund would not be able to pass through to its shareholders any credit or deduction for such a tax. An election may generally be available that would ameliorate these adverse tax consequences, but any such election could require the Fund to recognize taxable income or gain (subject to tax distribution requirements) without the concurrent receipt of cash. These investments could also result in the treatment of associated capital gains as ordinary income. The Fund may limit and/or manage its holdings in passive foreign investment companies to limit its tax liability or maximize its return from these investments.

The Fund may invest to a significant extent in debt obligations that are in the lowest rating categories or are unrated, including debt obligations of issuers not currently paying interest or who are in default. Investments in debt obligations that are at risk of or in default present special tax issues for the Fund. Tax rules are not entirely clear about issues such as when the Fund may cease to accrue interest, original issue discount or market discount, when and to what extent deductions may be taken for bad debts or worthless securities and how payments received on obligations in default should be allocated between principal and income. These and other related issues will be addressed by the Fund when, as and if it invests in such securities, in order to seek to ensure that it distributes sufficient income to preserve its status as a regulated investment company and does not become subject to U.S. federal income or excise taxes.

If the Fund utilizes leverage through borrowing, asset coverage limitations imposed by the 1940 Act as well as additional restrictions that may be imposed by certain lenders on the payment of dividends

S-34

or distributions potentially could limit or eliminate the Fund's ability to make distributions on its common shares and/or Preferred Shares until the asset coverage is restored. These limitations could prevent the Fund from distributing at least 90% of its investment company taxable income as is required under the Code and therefore might jeopardize the Fund's qualification for the reduced rates of taxation available to regulated investment companies and/or might subject the Fund to the nondeductible 4% excise tax. Upon any failure to meet the asset coverage requirements imposed by the 1940 Act, the Fund may, in its sole discretion and to the extent permitted under the 1940 Act, purchase or redeem Preferred Shares in order to maintain or restore the requisite asset coverage and avoid the adverse consequences to the Fund and its shareholders of failing to meet the distribution requirements. There can be no assurance, however, that any such action would achieve these objectives. The Fund will endeavor to avoid restrictions on its ability to distribute dividends.

If the Fund invests in certain pay-in-kind securities, zero coupon securities, deferred interest securities or, in general, any other securities with original issue discount (or with market discount if the Fund elects to include market discount in income currently), the Fund must accrue income on such investments for each taxable year, which generally will be prior to the receipt of the corresponding cash payments. However, the Fund must distribute, at least annually, all or substantially all of its net income, including such accrued income, to shareholders to avoid U.S. federal income and excise taxes. Therefore, the Fund may have to dispose of its portfolio securities under disadvantageous circumstances to generate cash, or may have to leverage itself by borrowing the cash, to satisfy distribution requirements.

At the time of an investor's purchase of the Preferred Shares, a portion of the purchase price may be attributable to realized or unrealized appreciation in the Fund's portfolio or undistributed taxable income of the Fund. Consequently, subsequent distributions by the Fund with respect to these shares from such appreciation or income may be taxable to such investor even if the net asset value of the investor's shares is, as a result of the distributions, reduced below the investor's cost for such shares and the distributions economically represent a return of a portion of the investment.

Under present law and based in part on the fact that there is no express or implied agreement between or among a Broker-Dealer or any other party, and the Fund or any owners of Preferred Shares, that the Broker-Dealer or any other party will guarantee or otherwise arrange to ensure that an owner of Preferred Shares will be able to sell his or her shares, it is anticipated that the Preferred Shares will constitute stock of the Fund, and thus distributions with respect to the Preferred Shares (other than capital gain distributions and distributions in redemption of the Preferred Shares subject to section 302(b) of the Code) will generally constitute dividends to the extent of the Fund's current or accumulated earnings and profits, as calculated for U.S. federal income tax purposes. The following discussion assumes such treatment will apply. Distributions in excess of current and accumulated earnings and profits of the Fund are treated first as return of capital to the extent of the shareholder's basis in the Preferred Shares and, after the adjusted basis is reduced to zero, will be treated as capital gain to a holder of Preferred Shares that holds such shares as a capital asset.

The Fund's income will consist of net investment income and may also consist of net capital gain. The character of the Fund's income will not affect the amount of dividends to which the holders of the Preferred Shares are entitled. Holders of the Preferred Shares are entitled to receive only the amount of dividends as determined by periodic auctions. For U.S. federal income tax purposes, however, the Internal Revenue Service currently requires that a regulated investment company that has two or more classes of shares allocate to each such class proportionate amounts of each type of its income (such as ordinary income and net capital gain) for each tax year. Accordingly, the Fund intends to designate distributions made with respect to the common shares and the Preferred Shares as consisting of particular types of income (e.g. net capital gain and ordinary income), in accordance with each class's proportionate share of the total dividends paid to both classes. Thus, each dividend paid with respect to the Preferred Shares during a year will be designated as ordinary income dividends and, if the Fund designates any dividend as a capital gains dividend, capital gains in proportion to the Preferred Shares proportionate share of the total distributions paid on the Preferred Shares during the year to the total distributions paid on both the Preferred Shares

S-35

and the Common Shares during the year. Each holder of the Preferred Shares during the year will be notified of the allocation within 60 days after the end of the year. The amount of the net capital gain realized by the Fund may not be significant, and there is no assurance that any such income will be realized by the Fund in any year. Distributions of the Fund's net investment income are taxable to shareholders as ordinary income. Distributions of the Fund's net capital gain, if any, are taxable to shareholders at rates applicable to long- term capital gains, regardless of the length of time the Preferred Shares have been held by holders. Distributions in excess of the Fund's earnings and profits will first reduce a shareholder's adjusted tax basis in his or her shares of Preferred Shares and, after the adjusted tax basis is reduced to zero, will constitute capital gains to a holder of shares of Preferred Shares who holds his or her shares of Preferred Shares as a capital asset.

Although the Fund is required to distribute annually at least 90% of its investment company taxable income, the Fund is not required to distribute net capital gain to the shareholders. The Fund may retain and reinvest such gains and pay federal income taxes on such gains (the "net undistributed capital gain"). However, it is unclear whether a portion of the net undistributed capital gain would have to be allocated to the Preferred Shares for U.S. federal income tax purposes. Until and unless the Fund receives acceptable guidance from the Internal Revenue Service as to the allocation of the net undistributed capital gain between the Common Shares and the Preferred Shares, the Fund intends to distribute its net capital gain for any year during which it has shares of Preferred Shares outstanding. Such distribution will affect the tax character but not the amount of dividends to which holders of shares of Preferred Shares are entitled.

Sales and other dispositions of the Preferred Shares are taxable events for shareholders that are subject to U.S. federal income tax. Shareholders should consult their own tax advisors with reference to their individual circumstances to determine whether any particular transaction in the Preferred Shares is properly treated as a sale for tax purposes (as the following discussion assumes) and the tax treatment of any gains or losses recognized in such transactions. Any loss realized by a shareholder upon the sale or other disposition of shares with a tax holding period of six months or less will be treated as a long-term capital loss to the extent of any amounts treated as distributions of long-term capital gain with respect to such shares. Losses on sales or other dispositions of shares may be disallowed under "wash sale" rules in the event of other investments in the Fund (including those made pursuant to reinvestment of dividends) within a period of 61 days beginning 30 days before and ending 30 days after a sale or other disposition of shares. In such a case, the disallowed portion of any loss generally would be included in the U.S. federal tax basis of the shares acquired in the other investments in the Fund.

The Fund may engage in various transactions utilizing options, futures contracts, forward contracts, hedge instruments, straddles, and other similar transactions. Such transactions may be subject to special provisions of the Code that, among other things, affect the character of any income realized by the Fund from such investments, accelerate recognition of income to the Fund, defer Fund losses, and affect the determination of whether capital gain and loss is characterized as long-term or short-term capital gain or loss. These rules could therefore affect the character, amount and timing of distributions to shareholders. These provisions may also require the Fund to mark-to-market certain types of the positions in its portfolio (i.e., treat them as if they were closed out), which may cause the Fund to recognize income without receiving cash with which to make distributions in amounts necessary to satisfy the distribution requirements for avoiding U.S. federal income and excise taxes. The Fund will monitor its transactions, will make the appropriate tax elections, and will make the appropriate entries in its books and records when it acquires an option, futures contract, forward contract, hedge instrument or other similar investment in order to mitigate the effect of these rules, prevent disqualification of the Fund as a regulated investment company and minimize the imposition of U.S. federal income and excise taxes.

Certain distributions by the Fund to its corporate shareholders may qualify for the corporate dividends-received deduction subject to certain holding period requirements and limitations on debt

S-36

financings under the Code, but only to the extent the Fund earned dividend income from stock investments in U.S. domestic corporations and certain other requirements are satisfied. The Fund is permitted to acquire stocks of U.S. domestic corporations, and it is therefore possible that a small portion of the Fund's distributions, from the dividends attributable to such stocks, may qualify for the dividends-received deduction. Such qualifying portion, if any, may affect a corporate shareholder's liability for alternative minimum tax and/or result in basis reductions and other consequences in certain circumstances.

In addition, certain distributions of "qualified dividend income" (generally dividends received from U.S. domestic corporations and qualified foreign corporations) by the Fund to its noncorporate shareholders may qualify for reduced rates of taxation subject to certain holding period and other requirements under the Code. Because the Fund is permitted to acquire stock of U.S. domestic corporations, it is therefore possible that a small portion of the Fund's distributions from dividends attributable to such stocks, may constitute qualified dividend income and may therefore qualify for such reduced rates of taxation.

The Fund may invest in REITs that hold residual interests in real estate mortgage investment conduits ("REMICs"). Under Treasury regulations a portion of the Fund's income from a REIT that is attributable to the REIT's residual interest in a REMIC (referred to in the Code as an "excess inclusion") will be subject to U.S. federal income tax in all events. These regulations also provide that excess inclusion income of a regulated investment company, such as the Fund, will be allocated to shareholders of the regulated investment company in proportion to the dividends received by such shareholders, with the same consequences as if the shareholders held the related REMIC residual interest directly. In general, excess inclusion income allocated to shareholders (i) cannot be offset by net operating losses (subject to a limited exception for certain thrift institutions), (ii) will constitute unrelated business taxable income to entities (including a qualified pension plan, an individual retirement account, a 401(k) plan, a Keogh plan or other tax-exempt entity) subject to tax on unrelated business income, thereby potentially requiring such an entity that is allocated excess inclusion income, and otherwise might not be required to file a tax return, to file a tax return and pay tax on such income, and (iii) in the case of a foreign shareholder, will not qualify for any reduction in U.S. federal withholding tax. In addition, if at any time during any taxable year a "disqualified organization" (as defined in the Code) is a record holder of a share in a regulated investment company, then the regulated investment company will be subject to a tax equal to that portion of its excess inclusion income for the taxable year that is allocable to the disqualified organization, multiplied by the highest federal income tax rate imposed on corporations. The Fund does not intend to invest in REITs in which a substantial portion of the assets will consist of residual interests in REMICs.

The Fund may be subject to withholding and other taxes imposed by foreign countries, including taxes on interest, dividends and capital gains with respect to its investments in those countries, which would, if imposed, reduce the yield on or return from those investments. Tax treaties between certain countries and the U.S. may reduce or eliminate such taxes in some cases. The Fund does not expect to satisfy the requirements for passing through to its shareholders their pro rata shares of qualified foreign taxes paid by the Fund, with the result that shareholders will not include such taxes in their gross incomes and will not be entitled to a tax deduction or credit for such taxes on their own tax returns.

Federal law requires that the Fund withhold, as "backup withholding" 28% of reportable payments, including dividends, capital gain distributions and the proceeds of sales or other dispositions of the Preferred Shares paid to shareholders who have not complied with IRS requirements. In order to avoid this withholding requirement, shareholders must certify on their Account Applications, or on a separate IRS Form W-9, that the Social Security Number or other Taxpayer Identification Number they provide is their correct number and that they are not currently subject to backup withholding, or that they are exempt from backup withholding. The Fund may nevertheless be required to withhold if it receives notice from the IRS or a broker that the number provided is incorrect or backup withholding is applicable as a result of previous underreporting of interest or dividend income.

The description of certain federal tax provisions above relates only to U.S. federal income tax consequences for shareholders who are U.S. persons, (i.e., U.S. citizens or residents or U.S. corporations, partnerships, trusts or estates and who are subject to U.S. federal income tax). Investors other than U.S. persons may be subject to different U.S. tax treatment, including a non-resident alien U.S. federal withholding

S-37

tax at the rate of 30% or at a lower treaty rate on amounts treated as ordinary dividends from the Fund and, unless an effective IRS Form W-8BEN, or other authorized withholding certificate is on file, to backup withholding on certain other payments from the Fund. SHAREHOLDERS SHOULD CONSULT THEIR OWN TAX ADVISORS ON THESE MATTERS AND ON ANY SPECIFIC QUESTION OF U.S. FEDERAL, STATE, LOCAL, FOREIGN AND OTHER APPLICABLE TAX LAWS, BEFORE MAKING AN INVESTMENT IN THE FUND.

CUSTODIAN, TRANSFER AGENT, DIVIDEND PAYING AGENT AND REGISTRAR

The Fund's securities and cash are held under a custodian agreement with The Bank of New York, One Wall Street, New York, New York 10286. The auction agent, transfer agent, dividend paying agent and registrar for the Fund's shares is also The Bank of New York.

EXPERTS

The Statement of Assets and Liabilities and Statement of Operations of the Fund as of May 27, 2003 appearing in this Statement of Additional Information have been audited by Deloitte & Touche LLP independent auditors, as set forth in their report thereon appearing elsewhere herein, and are included in reliance upon such report given upon the authority of such firm as experts in accounting and auditing.

ADDITIONAL INFORMATION

A Registration Statement on Form N-2, including amendments thereto, relating to the shares offered hereby, has been filed by the Fund with the Commission, Washington, D.C. The prospectus and this Statement of Additional Information do not contain all of the information set forth in the Registration Statement, including any exhibits and schedules thereto. For further information with respect to the Fund and the shares offered hereby, reference is made to the Registration Statement. Statements contained in the prospectus and this Statement of Additional Information as to the contents of any contract or other document referred to are not necessarily complete and in each instance reference is made to the copy of such contract or other document filed as an exhibit to the Registration Statement, each such statement being qualified in all respects by such reference. A copy of the Registration Statement may be inspected without charge at the Commission's principal office in Washington, D.C., and copies of all or any part thereof may be obtained from the Commission upon the payment of certain fees prescribed by the Commission.

S-38

FINANCIAL STATEMENTS AND INDEPENDENT AUDITORS' REPORT

F-1

[Deloitte & Touche Letterhead]

REPORT OF INDEPENDENT AUDITORS

To the Board of Directors and Shareholders of

Calamos Convertible and High Income Fund:

We have audited the accompanying statement of assets and liabilities of Calamos Convertible and High Income Fund (the "Fund"), as of May 27, 2003, and the related statement of operations for the period from March 12, 2003 (date of organization) through May 27, 2003. These financial statements are the responsibility of the Fund's management. Our responsibility is to express an opinion on these financial statements based on our audit.

We conducted our audit in accordance with auditing standards generally accepted in the United States of America. Those standards require that we plan and perform the audit to obtain reasonable assurance about whether the financial statements are free of material misstatement. An audit includes examining, on a test basis, evidence supporting the amounts and disclosures in the financial statements. Our procedures included confirmation of securities owned as May 27, 2003, by correspondence with the Fund's custodian. An audit also includes assessing the accounting principles used and significant estimates made by management, as well as evaluating the overall financial statement presentation. We believe that our audit provides a reasonable basis for our opinion.

In our opinion, the financial statements referred to above present fairly, in all material respects, the financial position of Calamos Convertible and High Income Fund as of May 27, 2003 and the results of its operations for the period from March 12, 2003 (date of organization) through May 27, 2003 in conformity with accounting principles generally accepted in the United States of America.

/s/ Deloitte & Touche LLP

May 27, 2003

F-2

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
STATEMENT OF ASSETS AND LIABILITIES
May 27, 2003

Assets:
Cash......................................................  $  192,275
Deferred offering costs...................................   1,283,764
                                                             ---------
Total assets..............................................   1,476,039
                                                             =========
Liabilities:
Accrued offering costs....................................   1,283,764
Accrued organizational expenses...........................      92,000
                                                             ---------
                                                             1,375,764
                                                             =========
Net assets (13,450.507 shares of beneficial interest
  issued and outstanding; unlimited shares authorized)....  $  100,275
                                                            ==========
Net asset value per share                                   $    7.455
                                                            ==========

STATEMENT OF OPERATIONS
For the Period From March 12, 2003 (Date of Organization) Through May 27, 2003

Investment income.........................................  $       --
                                                             ---------
Organizational expenses...................................      92,000
Less: reimbursement from investment advisor...............          --
                                                             ---------
Net expenses..............................................  $   92,000
                                                             ---------
Net investment income.....................................  $  (92,000)
                                                             =========

NOTES

1. Organization

Calamos Convertible and High Income Fund (the "Fund") is a diversified, closed-end management investment company incorporated on March 12, 2003, which has had no operations other than the sale and issuance of 13,450.507 shares of beneficial interest at an aggregate purchase price of $192,275 to Calamos Asset Management, Inc. (the "Investment Adviser"). The Investment Adviser has agreed to reimburse the amount by which the aggregate of all of the Fund's organizational expenses and all offering costs (other than the sales load) exceeds $0.03 per share. Accordingly, the Fund's share of offering costs will be recorded as a reduction of the proceeds from the sale of its Common Shares upon the commencement of the Fund's operations. Estimated offering costs to be borne by the Fund total $1,283,764. Additionally, if the Fund completes an offering of Preferred Shares, the Fund will also pay expenses in connection with such offering.

2. Accounting Policies

The preparation of the financial statements in accordance with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of income and expenses during the reporting period. Actual results could differ from these estimates.

3. Agreements

The Fund has entered into an Investment Advisory Agreement with the Investment Adviser, which provides for payment of a monthly fee computed at the annual rate of 0.80% of the Fund's average weekly Total Managed Assets. Total Managed Assets means the total assets of the Fund (including any assets attributable to leverage) minus accrued liabilities (other than liabilities representing leverage). For purposes of calculating "Total Managed Assets", the liquidation preference of any preferred shares outstanding is not considered a liability. The Investment Adviser has contractually agreed to waive a portion of its management fee for the first eight years of the Fund's operations. Calamos will waive 0.10% of average weekly Total Managed Assets through May 30, 2008. The waiver is then reduced to 0.07% through May 30, 2009, 0.05% through May 30, 2010, and 0.03% through May 30, 2011.

The Fund entered into a Fund Accounting Servicing Agreement with U.S. Bancorp Fund Services LLC (the "Administrator"). The Fund will pay the Administrator a monthly fee based on the combined assets at the average annual rate of 0.032%. Combined assets include the Calamos Investment Trust, Calamos Advisors Trust, and the Calamos Convertible and High Income Fund. "Total Managed Assets" means the total assets of the Fund (including any asset attributable to leverage) minus accrued liabilities (other than liabilities representing leverage). For purposes of calculating "Total Managed Assets", the liquidation preference of any preferred shares outstanding is not considered a liability.

4. Federal Income Taxes

The Fund intends to qualify as a "regulated investment company" and as such (and by complying with the applicable provisions of the Internal Revenue Code of 1986, as amended) will not be subject to Federal income tax on taxable income (including realized capital gains) that is distributed to shareholders.

F-3

Calamos Convertible and High Income Fund

SCHEDULE OF INVESTMENTS JUNE 20, 2003 (UNAUDITED)
PRINCIPAL
AMOUNT                                                                 VALUE
-----------------------------------------------------------------------------
CORPORATE BONDS (45.1%)
                       BASIC INDUSTRIES (5.9%)
$     6,750,000        Dan River, Inc. (a)
                       12.750%, 04/15/2009                      $   6,075,000
      4,850,000        Freeport-McMoRan Copper & Gold Inc.
                       10.125%, 02/01/2010                          5,492,625
     15,000,000        Georgia-Pacific Corp. (a)
                       8.000%, 01/15/2014                          15,225,000
      4,000,000        Ipsco, Inc. (a)
                       8.750%, 06/01/2013                           4,140,000
     13,000,000        PolyOne Corp. (a)
                       10.625%, 05/15/2010                         12,870,000
      4,400,000        Pope & Talbot, Inc.
                       8.375%, 06/01/2013                           4,180,000
                                                                -------------
                                                                   47,982,625
                       CAPITAL GOODS - INDUSTRIAL (0.9%)
      7,500,000        SPX Corp
                       6.250%, 06/15/2011                           7,593,750

                       CAPITAL GOODS - TECHNOLOGY (5.0%)
      1,500,000        Advanced Energy Industries, Inc.
                       5.250%, 11/15/2006                           1,355,625
      3,000,000        Esterline Technologies Corporation (a)
                       7.750%, 06/15/2013                           3,157,500
      1,000,000    EUR Legrand, SA (a)
                       11.000%, 02/15/2013                          1,324,965
      5,000,000        Legrand, SA
                       10.500%, 02/15/2013                          5,650,000
      4,000,000        Legrand, SA (a)
                       8.500%, 02/15/2025                           4,140,000
      1,000,000        Sequa Corporation
                       9.000%, 08/01/2009                           1,072,500
      4,000,000        Sequa Corporation
                       8.875%, 04/01/2008                           4,210,000
     19,500,000        Xerox Corporation
                       7.625%, 06/15/2013                          19,743,750
                                                                -------------
                                                                   40,654,340
                       CONSUMER CYCLICAL (5.9%)
      3,500,000        Delta Air Lines, Inc.
                       10.125%, 05/15/2010                          2,852,500
     14,750,000        Delta Air Lines, Inc.
                       7.900%, 12/15/2009                          11,873,750
      5,500,000        Delta Air Lines, Inc.
                       7.700%, 12/15/2005                           4,895,000

See accompanying Notes to Schedule of Investments

F-4

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

SCHEDULE OF INVESTMENTS JUNE 20, 2003 (UNAUDITED)
PRINCIPAL
AMOUNT                                                                                                  VALUE
-------------------------------------------------------------------------------------------------------------
$     3,000,000    GBP          EMI Group PLC
                                9.750%, 05/20/2008                                              $   5,206,342
      9,828,000                 Oxford Industries, Inc. (a)
                                8.875%, 06/01/2011                                                 10,343,970
      6,000,000                 Tower Automotive, Inc. (a)
                                12.000%, 06/01/2013                                                 5,910,000
      7,000,000                 Warnaco Group, Inc. (a)
                                8.875%, 06/15/2013                                                  7,332,500
                                                                                                -------------
                                                                                                   48,414,062

                                CONSUMER GROWTH STAPLES (5.8%)
      2,000,000                 Alpharma, Inc. (a)
                                8.625%, 05/01/2011                                                  2,120,000
      7,625,000                 AmeriPath, Inc. (a)
                                10.500%, 04/01/2013                                                 8,215,938
     13,000,000                 Bausch & Lomb, Inc.
                                7.125%, 08/01/2028                                                 12,496,250
        500,000                 CBD Media, Inc. (a)
                                8.625%, 06/01/2011                                                    522,500
     12,500,000                 Mediacom Communications Corporation
                                9.500%, 01/15/2013                                                 13,531,250
      1,250,000                 Psychiatric Solutions (a)
                                10.625%, 06/15/2013                                                 1,293,750
      9,000,000                 Rite Aid Corporation
                                6.875%, 08/15/2013                                                  7,875,000
                                                                                                -------------
                                                                                                   46,054,688

                                CONSUMER STAPLES (1.9%)
     10,000,000                 Dole Food Company, Inc. (a)
                                8.875%, 03/15/2011                                                 10,825,000
      4,460,000                 Dole Food Company, Inc.
                                8.625%, 05/01/2009                                                  4,794,500
                                                                                                -------------
                                                                                                   15,619,500

                                CREDIT CYCLICALS (3.1%)
     23,350,000                 Texas Industries, Inc. (a)
                                10.250%, 06/15/2011                                                24,867,750



                                ENERGY (5.3%)
      2,000,000                 Arch Coal, Inc. (a)
                                6.750%, 07/01/2013                                                  2,065,000
      8,500,000                 Frontier Escrow Corp. (a)
                                8.000%, 04/15/2013                                                  9,010,000
      3,000,000                 Houston Exploration Company (a)
                                7.000%, 06/15/2013                                                  3,135,000
     16,500,000                 Premcor Refining Group, Inc. (a)
                                7.500%, 06/15/2015                                                 16,582,500
     12,000,000                 Williams Companies, Inc. (a)
                                8.625%, 06/01/2010                                                 12,720,000
                                                                                                -------------
                                                                                                   43,512,500

See accompanying Notes to Schedule of Investments

F-5

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

SCHEDULE OF INVESTMENTS JUNE 20, 2003 (UNAUDITED)
PRINCIPAL
AMOUNT                                                                          VALUE
---------------------------------------------------------------------------------------
                             FINANCIAL (1.3%)
$ 10,000,000                 Leucadia National Corporation (a)
                             7.000%, 08/15/2013                          $ 10,150,000

                             TELECOMMUNICATIONS (3.3%)
  16,050,000                 Lucent Technologies, Inc.
                             7.250%, 07/15/2006                            15,408,000
   5,000,000                 Lucent Technologies, Inc.
                             5.500%, 11/15/2008                             4,350,000
   5,000,000                 Nortel Networks Corporation
                             7.400%, 06/15/2006                             4,975,000
   2,500,000                Nortel Networks Corporation
                             6.125%, 02/15/2006                             2,443,750
                                                                       ---------------
                                                                           27,176,750


                             TRANSPORTATION (0.8%)
   6,000,000                 General Maritime Corp. (a)
                             10.000%, 03/15/2013                            6,570,000

                             UTILITIES (5.9%)
   7,250,000                 AES Corporation
                             8.500%, 11/01/2007                             6,996,250
  28,000,000                 Calpine Corporation
                             8.500%, 02/15/2011                            21,000,000
   9,000,000                 Edison Mission Energy
                             10.000%, 08/15/2008                            8,685,000
  10,500,000                 Edison Mission Energy
                             9.875%, 04/15/2011                             9,922,500
   1,000,000                 TECO Energy, Inc.
                             7.500%, 06/15/2010                             1,035,000
                                                                       ---------------
                                                                           47,638,750
                                                                       ---------------

                             TOTAL CORPORATE BONDS
                             (Cost $360,793,251)                          366,234,715





PRINCIPAL
AMOUNT                                                                          VALUE
---------------------------------------------------------------------------------------
CONVERTIBLE BONDS (2.8%)
                             CAPITAL GOODS - TECHNOLOGY (1.6%)
   3,000,000                 Amkor Technology, Inc.
                             5.000%, 03/15/2007                          $  2,508,750
   7,000,000                 Amkor Technology, Inc.
                             5.750%, 06/01/2006                             6,413,750
   5,000,000                 Conexant Systems, Inc.
                             4.000%, 02/01/2007                             4,050,000
                                                                       ---------------
                                                                           12,972,500

See accompanying Notes to Schedule of Investments

F-6

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

SCHEDULE OF INVESTMENTS JUNE 20, 2003 (UNAUDITED)
PRINCIPAL
AMOUNT                                                      VALUE
-----------------------------------------------------------------

                 CONSUMER STAPLES (1.2%)
$ 9,400,000 EUR  Parmalat Soparfi, SA
                 6.125%, 05/23/2032                   $ 9,491,225
                                                     ------------
                 TOTAL CONVERTIBLE BONDS
                 (Cost $22,635,735)                    22,463,725

NUMBER OF
SHARES                                                      VALUE
-----------------------------------------------------------------
CONVERTIBLE PREFERRED STOCKS (13.1%)

                 CAPITAL GOODS - INDUSTRIAL (3.4%)
    590,000      Ford Motor Company Capital Trust II
                 6.500%                                27,730,000

                 CAPITAL GOODS - TECHNOLOGY (3.2%)
    525,000      Electronic Data Systems Corp.
                 7.625%                                12,384,750
    235,000      Raytheon Company
                 8.250%                                13,554,800
                                                     ------------
                                                       25,939,550
                 CONSUMER GROWTH STAPLES (3.6%)
    610,000      Equity Securities Trust I
                 6.500%                                14,518,000
    330,000      Cendant Corp.
                 7.750%                                14,764,200
                                                     ------------
                                                       29,282,200

                 FINANCIAL (1.3%)
    260,000      National Australia Bank, Ltd.
                 7.875%                                10,171,200


                 UTILITIES (1.6%)
    450,000      Ameren Corporation
                 9.750%                                12,933,000
                                                     ------------
                 TOTAL CONVERTIBLE
                 PREFERRED STOCKS                     106,055,950
                 (Cost $103,698,682)
PRINCIPAL
AMOUNT                                                      VALUE
-----------------------------------------------------------------

COMMERCIAL PAPER (50.8%)
$50,000,000      AIG Funding, Inc.
                 1.040%, 06/23/2003                    49,997,111
 63,006,000      Exxon Mobil Corporation
                 1.040%, 06/23/2003                    63,002,360

See accompanying Notes to Schedule of Investments

F-7

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

SCHEDULE OF INVESTMENTS JUNE 20, 2003 (UNAUDITED)

PRINCIPAL
AMOUNT                                                                    VALUE
-------------------------------------------------------------------------------
$ 300,000,000       Federal Home Loan Bank Discount Note
                    0.900%, 06/23/2003                            $ 299,985,000
                                                                  -------------
                    TOTAL COMMERCIAL PAPER
                    (Cost $412,984,471)                             412,984,471

                TOTAL INVESTMENTS (111.8%)
                (Cost $900,112,139)                                 907,738,861

                OTHER ASSETS, LESS LIABILITIES (-11.8%)             (95,509,184)
                                                                  -------------
                NET ASSETS (100.0%)                               $ 812,229,677
                                                                  -------------

                NET ASSET VALUE PER SHARE                         $       14.45
                (56,213,451 shares outstanding)                   -------------

NOTES TO SCHEDULE OF INVESTMENTS
All securities are shown in U.S. Dollars
(a) 144A securities are those that are exempt from registration under Rule 144A of the Securities Act of 1933, as amended. These securities generally are issued to qualified institutional buyers, such as the Fund, and any resale by the Fund must be exempt transactions, normally to other qualified institutional investors, or exchanged to the registered form, pursuant to sale. At June 20, 2003 the market value of 144A securities that cannot be exchanged to the registered form is $178,595,873 or 21.99% of net assets of the Fund.

FOREIGN CURRENCY ABBREVIATIONS
GBP: British Pound Sterling
EUR: European Monetary Unit

F-8

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

STATEMENT OF ASSETS AND LIABILITIES
JUNE 20, 2003 (UNAUDITED)

ASSETS
Investments, at value ($900,112,139)..........................$  907,738,861
Cash with custodian (interest bearing)........................    14,193,838
Accrued interest and dividends receivable.....................     5,543,316
Other assets..................................................           428
                                                              --------------
   Total Assets...............................................   927,476,443

LIABILITIES AND NET ASSETS
Payable for investments purchased.............................   113,600,896
Payable for offering and organizational fees..................     1,275,814
Payable to investment advisor.................................       326,684
Payable to administrator......................................        22,528
Accrued expense and other liabilities.........................        20,844
                                                              --------------
   Total Liabilities..........................................   115,246,766
                                                              --------------

NET ASSETS....................................................$  812,229,677
                                                              --------------


ANALYSIS OF NET ASSETS
Common stock, no par value, 60,000,000 shares
  authorized, 56,213,451 shares issued and outstanding........$  803,973,511
Undistributed net investment income...........................       613,572
Accumulated net realized gain (loss) on investments and
  foreign currency transactions...............................        14,824
Unrealized appreciation (depreciation) of investments and
  foreign currency transactions...............................     7,627,770
                                                              --------------

NET ASSETS....................................................$  812,229,677
                                                              --------------

Net asset value per share of common stock:
  ($812,229,677 / 56,213,451 shares of common
  stock issued and outstanding)...............................$        14.45
                                                              --------------

See accompanying Notes to Financial Statements.

F-9

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

STATEMENT OF OPERATIONS
FOR THE PERIOD ENDED JUNE 20, 2003 * (UNAUDITED)
INVESTMENT INCOME
Interest........................................................$     966,426
Dividends.......................................................      108,774
                                                                -------------
         Total Investment Income................................    1,075,200
                                                                -------------

EXPENSES
Investment advisory fees........................................      373,353
Administration fees.............................................       22,528
Shareholder reports.............................................        4,708
Audit and legal fees............................................        4,598
Custodian fees..................................................        3,674
Registration fees...............................................        2,508
Transfer agent fees.............................................        1,804
Trustees' fees..................................................        1,210
Other...........................................................        1,914
                                                                -------------
           Total Expenses.......................................      416,297
                                                                -------------
           Less expense waived or absorbed......................       46,669
                                                                -------------
           Net Expenses.........................................      369,628
                                                                -------------

NET INVESTMENT INCOME...........................................      705,572
                                                                -------------


UNREALIZED GAIN (LOSS)
Net realized gain (loss) on investments and foreign
  currency transactions.........................................       14,824
Change in net unrealized appreciation/depreciation
  on investments and forward foreign currency transactions......    7,627,770
                                                                -------------
NET GAIN (LOSS) ON INVESTMENTS..................................    7,642,594
                                                                -------------
NET INCREASE (DECREASE) IN NET ASSETS
  RESULTING FROM OPERATIONS.....................................$   8,348,166
                                                                -------------

*May 27, 2003 (commencement of operations)

See accompanying Notes to Financial Statements.

F-10

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

STATEMENT OF CHANGES IN NET ASSETS (UNAUDITED)

                                                                            FOR THE
                                                                          PERIOD ENDED
                                                                         JUNE 20, 2003*
                                                                          (UNAUDITED)
                                                                         --------------
CHANGE IN NET ASSETS:
  Net investment income ...............................................  $     705,572
  Net realized gain (loss) on investments and foreign currency
    transactions ......................................................         14,824
  Change in net unrealized appreciation/depreciation on investments
    and forward foreign currency contract .............................      7,627,770
                                                                         -------------
  Net Increase (Decrease) in net assets resulting from operations .....      8,348,166
                                                                         -------------
CAPITAL TRANSACTIONS
  Proceeds from initial offering ......................................    805,065,000
  Offering costs ......................................................     (1,283,764)

TOTAL INCREASE (DECREASE) IN NET ASSETS                                    812,129,402
                                                                         -------------
NET ASSETS
  Beginning of period                                                          100,275
  End of period                                                          $ 812,229,677
                                                                         -------------
  Undistributed net investment income                                    $     613,572
                                                                         -------------

*May 27, 2003 (commencement of operations)

See accompanying Notes to Financial Statements.

F-11

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
FINANCIAL HIGHLIGHTS

Selected data for a common share outstanding throughout the period was as follows:

                                                                   FOR THE PERIOD
                                                                 ENDED JUNE 20, 2003*
                                                                     (UNAUDITED)
                                                                 -------------------
Net asset value, beginning of period ...........................  $        14.32 (a)
                                                                  --------------
Income from investment operations:
  Net investment income (b) ....................................            0.01
  Net realized and unrealized gain (loss) on investments
     and foreign currency transactions .........................            0.12
                                                                  --------------
Total from investment operations ...............................            0.13
                                                                  --------------
Net asset value, end of period .................................  $        14.45
                                                                  ==============
Market value, end of period ....................................  $        15.50

TOTAL INVESTMENT RETURN BASED ON(C):
  Net Asset Value                                                          0.91%
  Market Value                                                             3.33%

RATIO TO AVERAGE NET ASSETS APPLICABLE TO COMMON
  SHAREHOLDERS/SUPPLEMENTARY DATA:
Net assets applicable to common shareholders, end of period
  (000's omitted)                                                 $      812,230
Ratio of net expenses to average net assets (d)                            0.79%
Ratio of net investment income to average net assets (d)                   1.51%
Ratio of gross expenses to average net assets prior to waiver
  of expense by the advisor (d)                                            0.89%
Portfolio turnover rate (d)                                                4.59%

*May 27, 2003 (commencement of operations)
(a) Net of sales load of $0.68 on initial shares issued.
(b) Based on average shares outstanding.
(c) Total investment return is calculated assuming a purchase of common stock on the opening of the first day and a sale on the closing of the last day of the period reported. Dividends and distributions are assumed, for purposes of this calculation, to be reinvested at prices obtained under the Fund's dividend reinvestment plan. Total return is not annualized for periods less than one year. Brokerage commissions are not reflected.
(d) Annualized.

F-12

Appendix A

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
STATEMENT OF PREFERENCES OF
AUCTION RATE CUMULATIVE PREFERRED SHARES ("PREFERRED SHARES")


TABLE OF CONTENTS

                                                                                                                 PAGE
DESIGNATION......................................................................................................A-1

PART I:  TERMS OF PREFERRED SHARES...............................................................................A-2
1.       Number of Shares; Ranking...............................................................................A-2
2.       Dividends...............................................................................................A-2
3.       Redemption..............................................................................................A-5
4.       Designation of Dividend Period..........................................................................A-9
5.       Restrictions on Transfer................................................................................A-9
6.       Voting Rights..........................................................................................A-10
7.       Liquidation Rights.....................................................................................A-13
8.       Auction Agent..........................................................................................A-14
9.       1940 Act Preferred Shares Asset Coverage...............................................................A-14
10.      Preferred Shares Basic Maintenance Amount..............................................................A-14
11.      Certain Other Restrictions.............................................................................A-14
12.      Compliance Procedures for Asset Maintenance Tests......................................................A-15
13.      Notices................................................................................................A-17
14.      Waiver.................................................................................................A-17
15.      Termination............................................................................................A-17
16.      Amendment..............................................................................................A-17
17.      Definitions............................................................................................A-17
18.      Interpretation.........................................................................................A-38

PART II:  AUCTION PROCEDURES....................................................................................A-39
1.       Certain Definitions....................................................................................A-39
2.       Orders.................................................................................................A-39
3.       Submission of Orders by Broker-Dealers to Auction Agent................................................A-41
4.       Determination of Sufficient Clearing Bids, Winning Bid Rate and Applicable Rate........................A-43
5.       Acceptance and Rejection of Submitted Bids and Submitted Sell Orders and Allocation....................A-44
6.       Transfer of Preferred Shares...........................................................................A-47

i

Calamos Convertible and High Income Fund, a Delaware statutory trust (the "Trust"), certifies that:

FIRST: Pursuant to authority expressly vested in the Board of Trustees of the Trust by Article V of its Agreement and Declaration of Trust (which as hereafter amended, restated and supplemented from time to time, is together with this Statement, the "Declaration"), the Board of Trustees has duly authorized the creation and issuance of, 17,202 shares of the preferred shares (no par value) and has further classified 3,000 of such shares as "Series M Preferred Shares," liquidation preference $25,000 per share, 3,000 of such shares as "Series TU Preferred Shares", liquidation preference $25,000 per share, 3,000 of such shares as "Series W Preferred Shares", liquidation preference $25,000 per share, 3,000 of such shares as "Series TH Preferred Shares", liquidation preference $25,000 per share, 3,000 of such shares as "Series F Preferred Shares," liquidation preference $25,000 per share, and 2,200 of such shares as "Series A Preferred Shares", liquidation preference $25,000 per share (each a "Series" of Preferred Shares, and together, the "Preferred Shares").

SECOND: The preferences, voting powers, restrictions, limitations as to dividends, qualifications, and terms and conditions of redemption, of the Preferred Shares are as follows:

DESIGNATION

Series M Preferred Shares: a Series of 3,000 Preferred Shares, no par value, liquidation preference $25,000 per share, is hereby designated "Series M Preferred Shares" ("Series _ Preferred Shares"). Each share of Series M Preferred Shares shall have an initial dividend rate per annum equal to ____% and an initial Dividend Payment Date of _________ __, 2003 and have such other preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption, in addition to those required by applicable law, or as are set forth in Part I and Part II of this Statement. The Series M Preferred Shares shall constitute a separate Series of Preferred Shares of the Trust.

Series TU Preferred Shares: a Series of 3,000 Preferred Shares, no par value, liquidation preference $25,000 per share, is hereby designated "Series TU Preferred Shares" ("Series TU Preferred Shares"). Each share of Series TU Preferred Shares shall have an initial dividend rate per annum equal to ____% and an initial Dividend Payment Date of _________ __, 2003 and have such other preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption, in addition to those required by applicable law, or as are set forth in Part I and Part II of this Statement. The Series TU Preferred Shares shall constitute a separate Series of Preferred Shares of the Trust.

Series W Preferred Shares: a Series of 3,000 Preferred Shares, no par value, liquidation preference $25,000 per share, is hereby designated "Series W Preferred Shares" ("Series W Preferred Shares"). Each share of Series W Preferred Shares shall have an initial dividend rate per annum equal to ____% and an initial Dividend Payment Date of _________ __, 2003 and have such other preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption, in addition to those required by applicable law, or as are set forth in Part I and Part II of this Statement. The Series W Preferred Shares shall constitute a separate Series of Preferred Shares of the Trust.

Series TH Preferred Shares: a Series of 3,000 Preferred Shares, no par value, liquidation preference $25,000 per share, is hereby designated "Series TH Preferred Shares" ("Series TH Preferred Shares"). Each share of Series TH Preferred Shares shall have an initial dividend rate per annum equal to ____% and an initial Dividend Payment Date of _________ __, 2003 and have such other preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption, in addition to those required by applicable law, or as are set forth in Part I and Part II of this Statement. The Series TH Preferred Shares shall constitute a separate Series of Preferred Shares of the Trust.

Series F Preferred Shares: a Series of 3,000 Preferred Shares, no par value, liquidation preference $25,000 per share, is hereby designated "Series F Preferred Shares" ("Series F Preferred Shares"). Each share of Series F Preferred Shares shall have an initial dividend rate per annum equal to ____% and an initial Dividend Payment Date of _________ __, 2003 and have such other preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption, in addition to those required by applicable law, or as are set forth in Part I and Part II of this Statement. The Series F Preferred Shares shall constitute a separate Series of Preferred Shares of the Trust.

Series A Preferred Shares: a Series of 2,200 Preferred Shares, no par value, liquidation preference $25,000 per share, is hereby designated "Series A Preferred Shares" ("Series A Preferred Shares"). Each share of Series A Preferred Shares shall have an initial dividend rate per annum equal to ____% and an initial Dividend Payment Date of _________ __, 2003 and have such other preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption, in addition to those required by applicable law, or as are set forth in Part I and Part II of this Statement. The Series A Preferred Shares shall constitute a separate Series of Preferred Shares of the Trust.

Subject to the provisions of Section 11(b) of Part I hereof, the Board of Trusts of the Trust may, in the future, reclassify additional shares of the Trust's unissued common shares as preferred shares, with

A-1

the same preferences, rights, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption and other terms herein described, except that the dividend rate for its initial Dividend Period, its initial Dividend Payment Date and any other changes in the terms herein set forth shall be as set forth in this Statement with respect to the additional shares.

As used in Part I and Part II of this Statement, capitalized terms shall have the meanings provided in Section 17 of Part I and Section 1 of Part II of this Statement.

PART I: TERMS OF PREFERRED SHARES

1. Number of Shares; Ranking.

(a) The initial number of authorized shares constituting the Series M Preferred Shares is 3,000 shares, Series TU Preferred Shares is 3,000 shares, Series W Preferred Shares is 3,000 shares, Series TH Preferred Shares is shares, Series F Preferred Shares is 3,000 shares and Series A Preferred Shares is 2,200 shares. No fractional shares of any Series shall be issued.

(b) Shares of each Series that at any time have been redeemed or purchased by the Trust shall, after such redemption or purchase, have the status of authorized but unissued preferred shares of beneficial interest.

(c) Shares of each Series shall rank on parity with shares of any other Series of preferred shares of the Trust (including any other Preferred Shares) as to the payment of dividends to which such shares are entitled.

(d) No Holder of shares of any Series shall have, solely by reason of being such a holder, any preemptive exchange, conversion or other right to acquire, purchase or subscribe for any shares of any Series, Common Shares or other securities of the Trust which it may hereafter issue or sell. The Preferred Shares shall not be subject to any sinking fund.

2. Dividends.

(a) The Holders of shares of each Series shall be entitled to receive, when, as and if declared by the Board of Trustees, out of funds legally available therefor, cumulative cash dividends on their shares at the Applicable Rate, determined as set forth in paragraph (c) of this Section 2, and no more, payable on the respective dates determined as set forth in paragraph (b) of this
Section 2. Dividends on the Outstanding shares of each Series issued on the Date of Original Issue shall accumulate from the Date of Original Issue.

(b) (i) Dividends shall be payable when, as and if declared by the Board of Trustees following the initial Dividend Payment Date, subject to subparagraph (b)(ii) of this Section 2, on the shares of each Series, as follows:

(A) with respect to any Dividend Period of one year or less, on the Business Day following the last day of such Dividend Period; provided, however, if the Dividend Period is more than 91 days then on the 91st, 181st and 271st days within such period, if applicable, and on the Business Day following the last day of such Dividend Period; and

(B) with respect to any Dividend Period of more than one year, on a quarterly basis on each January 1, April 1, July 1 and October 1 within such Dividend Period and on the Business Day following the last day of such Dividend Period.

A-2

(ii) If a day for payment of dividends resulting from the application of subparagraph (b) above is not a Business Day, then the Dividend Payment Date shall be the first Business Day following such day for payment of dividends.

(iii) The Trust shall pay to the Paying Agent not later than 12:00 noon, New York City time, on each Dividend Payment Date for a Series, an aggregate amount of immediately available funds equal to the dividends to be paid to all Holders of such Series on such Dividend Payment Date. The Trust shall not be required to establish any reserves for the payment of dividends.

(iv) All moneys paid to the Paying Agent for the payment of dividends shall be held in trust for the payment of such dividends by the Paying Agent for the benefit of the Holders specified in subparagraph (b)(v) of this Section 2. Any moneys paid to the Paying Agent in accordance with the foregoing but not applied by the Paying Agent to the payment of dividends will, upon request and to the extent permitted by law, be repaid to the Trust at the end of 90 days from the date on which such moneys were to have been so applied.

(v) Each dividend on each Series shall be paid on the Dividend Payment Date therefor to the Holders of that Series as their names appear on the share ledger or share records of the Trust on the Business Day next preceding such Dividend Payment Date; provided, however, if dividends are in arrears, they may be declared and paid at any time to Holders as their names appear on the share ledger or share records of the Trust on such date not exceeding 15 days preceding the payment date thereof, as may be fixed by the Board of Trustees. No interest will be payable in respect of any dividend payment or payments which may be in arrears.

(c) (i) The dividend rate on Outstanding shares of each Series during the period from and after the Date of Original Issue to and including the last day of the initial Dividend Period therefor shall be equal to the rate set forth under "Designation" above. For each subsequent Dividend Period for each Series, the dividend rate shall be equal to the rate per annum that results from an Auction (but the rate set at the Auction will not exceed the Maximum Rate); provided, however, that if an Auction for any subsequent Dividend Period of a Series is not held for any reason or if Sufficient Clearing Orders have not been made in an Auction (other than as a result of all shares of any Series being the subject of Submitted Hold Orders and other than in an auction for a Special Dividend Period), then the dividend rate on the shares of that Series for any such Dividend Period shall be the Maximum Rate (except (i) during a Default Period when the dividend rate shall be the Default Rate, as set forth in Section 2(c)(ii) below or (ii) after a Default Period and prior to the beginning of the next Dividend Period when the dividend rate shall be the Maximum Rate at the close of business on the last day of such Default Period). If the Fund has declared a Special Dividend Period and there are not Sufficient Clearing Orders, the dividend rate for the next rate period will be the same as during the current rate period. If as a result of an unforeseeable disruption of the financial markets, an Auction cannot be held, the dividend rate for the subsequent Dividend Period will be the same as the dividend rate for the current Dividend Period.

(ii) Subject to the cure provisions in Section 2(c)(iii) below, a "Default Period" with respect to a particular Series will commence on any date the Trust fails to deposit irrevocably in trust in same-day funds, with the Paying Agent by 12:00 noon, New York City time, (A) the full amount of any declared dividend on that Series payable on the Dividend Payment Date (a "Dividend Default") or (B) the full amount of any redemption price (the "Redemption Price") payable on the date fixed for redemption (the "Redemption Date") (a

A-3

"Redemption Default") and together with a Dividend Default, hereinafter referred to as "Default").

Subject to the cure provisions of Section 2(c)(iii) below, a Default Period with respect to a Dividend Default or a Redemption Default shall end on the Business Day on which, by 12:00 noon, New York City time, all unpaid dividends and any unpaid Redemption Price shall have been deposited irrevocably in trust in same-day funds with the Paying Agent. In the case of a Dividend Default, the Applicable Rate for each Dividend Period commencing during a Default Period will be equal to the Default Rate, and each subsequent Dividend Period commencing after the beginning of a Default Period shall be a Standard Dividend Period; provided, however, that the commencement of a Default Period will not by itself cause the commencement of a new Dividend Period. No Auction shall be held during a Default Period applicable to that Series.

(iii) No Default Period with respect to a Dividend Default or Redemption Default shall be deemed to commence if the amount of any dividend or any Redemption Price due (if such default is not solely due to the willful failure of the Trust) is deposited irrevocably in trust, in same-day funds with the Paying Agent by 12:00 noon, New York City time within three Business Days after the applicable Dividend Payment Date or Redemption Date, together with an amount equal to the Default Rate applied to the amount of such non-payment based on the actual number of days comprising such period divided by 360 for each Series. The Default Rate shall be equal to the Reference Rate multiplied by three (3).

(iv) The amount of dividends per share payable (if declared) on each Dividend Payment Date of each Dividend Period of less than one (1) year (or in respect of dividends on another date in connection with a redemption during such Dividend Period) shall be computed by multiplying the Applicable Rate (or the Default Rate) for such Dividend Period (or a portion thereof) by a fraction, the numerator of which will be the number of days in such Dividend Period (or portion thereof) that such share was Outstanding and for which the Applicable Rate or the Default Rate was applicable and the denominator of which will be 360 for each Series, multiplying the amount so obtained by $25,000, and rounding the amount so obtained to the nearest cent. During any Dividend Period of one (1) year or more, the amount of dividends per share payable on any Dividend Payment Date (or in respect of dividends on another date in connection with a redemption during such Dividend Period) shall be computed as described in the preceding sentence, except that it will be determined on the basis of a year consisting of twelve 30-day months.

(d) Any dividend payment made on shares of any Series shall first be credited against the earliest accumulated but unpaid dividends due with respect to that Series.

(e) For so long as the Preferred Shares are Outstanding, except as otherwise contemplated by Part I of this Statement, the Trust will not declare, pay or set apart for payment any dividend or other distribution (other than a dividend or distribution paid in shares of, or options, warrants or rights to subscribe for or purchase, Common Shares or other shares ranking junior to the Preferred Shares as to dividends or upon liquidation) with respect to Common Shares or any other shares of beneficial interest of the Trust ranking junior to the Preferred Shares as to dividends or upon liquidation, or call for redemption, redeem, purchase or otherwise acquire for consideration any Common Shares or other shares of beneficial interest ranking junior to the Preferred Shares (except by conversion into or exchange for shares of the Trust ranking junior to the Preferred Shares as to dividends and upon liquidation), unless (i) immediately after such transaction, the Trust would have Eligible Assets with an aggregate Discounted Value at least equal to the Preferred Shares Basic Maintenance Amount and the 1940 Act Preferred Shares Asset Coverage would be achieved, (ii) all cumulative and unpaid dividends due on or prior to the date of the transaction have been declared and paid in full with

A-4

respect to the Trust's preferred shares, including the Preferred Shares, or shall have been declared and sufficient funds for the payment thereof deposited with the Paying Agent, and (iii) the Trust has redeemed the full number of preferred shares required to be redeemed by any provision for mandatory redemption including the Preferred Shares required to be redeemed by any provision for mandatory redemption contained in Section 3(a)(ii) of Part I of this Statement.

(f) For so long as the Preferred Shares are Outstanding, except as set forth in the next sentence, the Trust will not declare, pay or set apart for payment on any series of shares of beneficial interest of the Trust ranking, as to the payment of dividends, on a parity with the Preferred Shares for any period unless full cumulative dividends have been or contemporaneously are declared and paid on each Series through their most recent Dividend Payment Date. When dividends are not paid in full upon the Preferred Shares through their most recent Dividend Payment Dates or upon any other series of shares of beneficial interest ranking on parity as to the payment of dividends with Preferred Shares through their most recent respective Dividend Payment Dates, all dividends declared upon the Preferred Shares and any other such series of shares of beneficial interest ranking on parity as to the payment of dividends with the Preferred Shares shall be declared pro rata so that the amount of dividends declared per share on the Preferred Shares and such other series of shares of beneficial interest ranking on parity therewith shall in all cases bear to each other the same ratio that accumulated dividends per share on the Preferred Shares and such other series of shares of beneficial interest ranking on parity therewith bear to each other.

3. Redemption.

(a) (i) After the initial Dividend Period, subject to the provisions of this Section 3 and to the extent permitted under the 1940 Act and Delaware law, the Trust may, at its option, redeem in whole or in part out of funds legally available therefor shares of any Series herein designated as (A) having a Dividend Period of one year or less, on the Business Day after the last day of such Dividend Period by delivering a notice of redemption not less than 15 calendar days and not more than 40 calendar days prior to the Redemption Date, at a redemption price per share equal to $25,000, plus an amount equal to accumulated but unpaid dividends thereon (whether or not earned or declared) to the Redemption Date ("Redemption Price"), or (B) having a Dividend Period of more than one year, on any Business Day prior to the end of the relevant Dividend Period by delivering a notice of redemption not less than 15 calendar days and not more than 40 calendar days prior to the Redemption Date, at the Redemption Price, plus a redemption premium, if any, determined by the Board of Trustees after consultation with the Broker-Dealers and set forth in any applicable Specific Redemption Provisions at the time of the designation of such Dividend Period as set forth in Section 4 of Part I of this Statement; provided, however, that during a Dividend Period of more than one year, no shares of any Series will be subject to optional redemption except in accordance with any Specific Redemption Provisions approved by the Board of Trustees after consultation with the Broker-Dealers at the time of the designation of such Dividend Period. Notwithstanding the foregoing, the Trust shall not give a notice of or effect any redemption pursuant to this Section 3(a)(i) unless, on the date on which the Trust gives such notice and on the Redemption Date, (a) the Trust has available Deposit Securities with maturity or tender dates not later than the day preceding the applicable Redemption Date and having a value not less than the amount (including any applicable premium) due to Holders of each Series by reason of the redemption of each Series on the Redemption Date and (b) the Trust would have Eligible Assets with an aggregate Discounted Value at least equal to the Preferred Shares Basic Maintenance Amount immediately subsequent to such redemption, if such redemption were to occur on such date, it being understood that the provisions of paragraph (d) of this Section 3 shall be applicable in such circumstances in the event the Trust makes the deposit and gives a notice of redemption to the Auction Agent under paragraph (b) of this Section 3.

A-5

(ii) If the Trust fails as of any Valuation Date to meet the Preferred Shares Basic Maintenance Amount Test or, as of the last Business Day of any month, the 1940 Act Preferred Shares Asset Coverage, and such failure is not cured within ten Business Days following the relevant Valuation Date, in the case of a failure to meet the Preferred Shares Basic Maintenance Amount Test, or the last Business Day of the following month in the case of a failure to meet the 1940 Act Preferred Shares Asset Coverage (each an "Asset Coverage Cure Date"), the Preferred Shares will be subject to mandatory redemption out of funds legally available therefor. The number of Preferred Shares to be redeemed in such circumstances will be equal to the lesser of (A) the minimum number of Preferred Shares the redemption of which, if deemed to have occurred immediately prior to the opening of business on the relevant Asset Coverage Cure Date, would result in the Trust meeting the Preferred Shares Basic Maintenance Amount Test, and the 1940 Act Preferred Shares Asset Coverage, as the case may be, in either case as of the relevant Asset Coverage Cure Date (provided that, if there is no such minimum number of shares the redemption of which would have such result, all Preferred Shares then Outstanding will be redeemed) and (B) the maximum number of Preferred Shares that can be redeemed out of funds expected to be available therefor on the Mandatory Redemption Date at the Mandatory Redemption Price set forth in subparagraph (a)(iii) of this Section 3.

(iii) In determining the Preferred Shares required to be redeemed in accordance with the foregoing Section 3(a)(ii), the Trust shall allocate the number of Preferred Shares required to be redeemed to satisfy the Preferred Shares Basic Maintenance Amount Test or the 1940 Act Preferred Shares Asset Coverage, as the case may be, pro rata or among the Holders of the Preferred Shares in proportion to the number of shares they hold and other preferred shares subject to mandatory redemption provisions similar to those contained in this
Section 3, subject to the further provisions of this subparagraph
(iii). The Trust shall effect any required mandatory redemption pursuant to: (A) the Preferred Shares Basic Maintenance Amount Test, as described in subparagraph (a)(ii) of this Section 3, no later than 30 days after the Trust last met the Preferred Shares Basic Maintenance Amount Test, or (B) the 1940 Act Preferred Shares Asset Coverage, as described in subparagraph (a)(ii) of this Section 3, no later than 30 days after the Asset Coverage Cure Date (the "Mandatory Redemption Date"), except that if the Trust does not have funds legally available for the redemption of, or is not otherwise legally permitted to redeem, the number of Preferred Shares which would be required to be redeemed by the Trust under clause (A) of subparagraph (a)(ii) of this Section 3 if sufficient funds were available, together with other preferred shares which are subject to mandatory redemption under provisions similar to those contained in this Section 3, or the Trust otherwise is unable to effect such redemption on or prior to such Mandatory Redemption Date, the Trust shall redeem those Preferred Shares, and other preferred shares which it was unable to redeem, on the earliest practicable date on which the Trust will have such funds available, upon notice pursuant to Section 3(b) to record owners of Preferred Shares to be redeemed and the Paying Agent. The Trust will deposit with the Paying Agent funds sufficient to redeem the specified number of Preferred Shares with respect to a redemption required under subparagraph (a)(ii) of this Section 3, by 1:00 P.M., New York City time, of the Business Day immediately preceding the Mandatory Redemption Date. If fewer than all of the Outstanding Preferred Shares are to be redeemed pursuant to this Section 3(a)(iii), the number of shares to be redeemed shall be redeemed pro rata from the Holders of such shares in proportion to the number of the Preferred Shares held by such Holders, by lot or by such other method as the Trust shall deem fair and equitable, subject, however, to the terms of any applicable Specific Redemption Provisions. "Mandatory Redemption Price" means the Redemption Price plus (in the case of a Dividend Period of one year or more only) a redemption premium, if any, determined by the Board of Trustees after consultation with the Broker-Dealers and set forth in any applicable Specific Redemption Provisions.

A-6

(b) In the event of a redemption pursuant to the foregoing
Section 3(a), the Trust will file a notice of its intention to redeem with the Securities and Exchange Commission so as to provide at least the minimum notice required under Rule 23c-2 under the 1940 Act or any successor provision. In addition, the Trust shall deliver a notice of redemption to the Auction Agent (the "Notice of Redemption") containing the information set forth below (i) in the case of an optional redemption pursuant to Section 3(a)(i) above, one Business Day prior to the giving of notice to the Holders and (ii) in the case of a mandatory redemption pursuant to Section 3(a)(ii) above, on or prior to the 10th day preceding the Mandatory Redemption Date. Only with respect to shares held by the Securities Depository, the Auction Agent will use its reasonable efforts to provide telephonic notice to each Holder of shares of any Series called for redemption not later than the close of business on the Business Day immediately following the day on which the Auction Agent determines the shares to be redeemed (or, during a Default Period with respect to such shares, not later than the close of business on the Business Day immediately following the day on which the Auction Agent receives Notice of Redemption from the Trust). The Auction Agent shall confirm such telephonic notice in writing not later than the close of business on the third Business Day preceding the date fixed for redemption by providing the Notice of Redemption to each Holder of shares called for redemption, the Paying Agent (if different from the Auction Agent) and the Securities Depository. Notice of Redemption will be addressed to the registered owners of shares of any Series at their addresses appearing on the share records of the Trust. Such Notice of Redemption will set forth (i) the date fixed for redemption, (ii) the number and identity of shares of each Series to be redeemed, (iii) the redemption price (specifying the amount of accumulated dividends to be included therein), (iv) that dividends on the shares to be redeemed will cease to accumulate on such date fixed for redemption, and (v) the provision under which redemption shall be made. No defect in the Notice of Redemption or in the transmittal or mailing thereof will affect the validity of the redemption proceedings, except as required by applicable law. If fewer than all shares held by any Holder are to be redeemed, the Notice of Redemption mailed to such Holder shall also specify the number of shares to be redeemed from such Holder. The Trust shall provide Moody's (if Moody's is then rating the Preferred Shares) written notice of the Trust's intent to redeem shares pursuant to Section 3(a) above.

(c) Notwithstanding the provisions of paragraph (a) of this
Section 3, no preferred shares, including the Preferred Shares, may be redeemed at the option of the Trust unless all dividends in arrears on the Outstanding Preferred Shares and any other preferred shares have been or are being contemporaneously paid or set aside for payment; provided, however, that the foregoing shall not prevent the purchase or acquisition of outstanding preferred shares pursuant to the successful completion of an otherwise lawful purchase or exchange offer made on the same terms to holders of all outstanding preferred shares.

(d) Upon the deposit of funds sufficient to redeem shares of any Series with the Paying Agent and the giving of the Notice of Redemption to the Auction Agent under paragraph (b) of this Section 3, dividends on such shares shall cease to accumulate and such shares shall no longer be deemed to be Outstanding for any purpose (including, without limitation, for purposes of calculating whether the Trust has met the Preferred Shares Basic Maintenance Amount Test or the 1940 Act Preferred Shares Asset Coverage), and all rights of the Holders of the shares so called for redemption shall cease and terminate, except the right of such Holder to receive the Redemption Price specified herein, but without any interest or other additional amount. Such Redemption Price shall be paid by the Paying Agent to the nominee of the Securities Depository. The Trust shall be entitled to receive from the Paying Agent, promptly after the date fixed for redemption, any cash deposited with the Paying Agent in excess of (i) the aggregate Redemption Price of the shares of any Series called for redemption on such date and (ii) such other amounts, if any, to which Holders of shares of any Series called for redemption may be entitled. Any funds so deposited that are unclaimed at the end of two years from such redemption date shall, to the extent permitted by law, and upon request, be paid to the Trust, after which time the Holders of shares of each Series so called for redemption may look only to the Trust for payment of the Redemption Price and all other amounts, if any, to which they may be entitled; provided, however, that the

A-7

Paying Agent shall notify all Holders whose funds are unclaimed by placing a notice in The Wall Street Journal concerning the availability of such funds once each week for three consecutive weeks.

(e) To the extent that any redemption for which Notice of Redemption has been given is not made by reason of the absence of legally available funds therefor, or is otherwise prohibited, such redemption shall be made as soon as practicable to the extent such funds become legally available or such redemption is no longer otherwise prohibited. Failure to redeem shares of any Series shall be deemed to exist at any time after the date specified for redemption in a Notice of Redemption when the Trust shall have failed, for any reason whatsoever, to deposit in trust with the Paying Agent the Redemption Price with respect to any shares for which such Notice of Redemption has been given. Notwithstanding the fact that the Trust may not have redeemed shares of each Series for which a Notice of Redemption has been given, dividends may be declared and paid on shares of any Series and shall include those shares of any Series for which Notice of Redemption has been given but for which deposit of funds has not been made.

(f) All moneys paid to the Paying Agent for payment of the Redemption Price of shares of any Series called for redemption shall be held in trust by the Paying Agent for the benefit of holders of shares so to be redeemed.

(g) So long as any shares of any Series are held of record by the nominee of the Securities Depository, the redemption price for such shares will be paid on the date fixed for redemption to the nominee of the Securities Depository for distribution to Agent Members for distribution to the persons for whom they are acting as agent.

(h) Except for the provisions described above, nothing contained in this Statement limits any right of the Trust to purchase or otherwise acquire any shares of each Series outside of an Auction at any price, whether higher or lower than the price that would be paid in connection with an optional or mandatory redemption, so long as, at the time of any such purchase, there is no arrearage in the payment of dividends on, or the mandatory or optional redemption price with respect to, any shares of each Series for which Notice of Redemption has been given and the Trust meets the 1940 Act Preferred Shares Asset Coverage and the Preferred Shares Basic Maintenance Amount Test after giving effect to such purchase or acquisition on the date thereof. Any shares which are purchased, redeemed or otherwise acquired by the Trust shall have no voting rights. If fewer than all the Outstanding shares of any Series are redeemed or otherwise acquired by the Trust, the Trust shall give notice of such transaction to the Auction Agent, in accordance with the procedures agreed upon by the Board of Trustees.

(i) In the case of any redemption pursuant to this Section 3, only whole shares of each Series shall be redeemed, and in the event that any provision of the Charter would require redemption of a fractional share, the Auction Agent shall be authorized to round up so that only whole shares are redeemed.

(j) Notwithstanding anything herein to the contrary, including, without limitation, Section 6 of Part I of this Statement, the Board of Trustees, upon notification to each Rating Agency, may authorize, create or issue other Series of preferred shares, including other Series of Preferred Shares, series of preferred shares ranking on parity with the Preferred Shares with respect to the payment of dividends or the distribution of assets upon dissolution, liquidation or winding up of the affairs of the Trust, and senior securities representing indebtedness as defined in the 1940 Act, to the extent permitted by the 1940 Act, if upon issuance of any such series, either (A) the net proceeds from the sale of such shares (or such portion thereof needed to redeem or repurchase the Outstanding Preferred Shares) are deposited with the Paying Agent in accordance with Section 3(d) of Part I of this Statement, Notice of Redemption as contemplated by Section 3(b) of Part I of this Statement has been delivered prior thereto or is sent promptly thereafter, and

A-8

such proceeds are used to redeem all Outstanding Preferred Shares or (B) the Trust would meet the 1940 Act Preferred Shares Asset Coverage, the Preferred Shares Basic Maintenance Amount Test and the requirements of Section 11 of Part I of this Statement.

4. Designation of Dividend Period.

(a) The initial Dividend Period for each Series shall be the period from the Date of Original Issue to the initial Dividend Payment Date set forth under "Designation" above. The Trust will designate the duration of subsequent Dividend Periods of each Series; provided, however, that no such designation is necessary for a Standard Dividend Period and, provided further, that any designation of a Special Dividend Period shall be effective only if (i) notice thereof shall have been given as provided herein, (ii) any failure to pay in a timely manner to the Auction Agent the full amount of any dividend on, or the Redemption Price of, each Series shall have been cured as provided above,
(iii) Sufficient Clearing Orders shall have existed in an Auction held on the Auction Date immediately preceding the first day of such proposed Special Dividend Period, and (iv) if the Trust shall have mailed a Notice of Redemption with respect to any shares, the Redemption Price with respect to such shares shall have been deposited with the Paying Agent.

(b) If the Trust proposes to designate any Special Dividend Period, not fewer than seven Business Days (or two Business Days in the event the duration of the Dividend Period prior to such Special Dividend Period is fewer than eight days) nor more than 30 Business Days prior to the first day of such Special Dividend Period, notice shall be (i) made by press release and (ii) communicated by the Trust by telephonic or other means to the Auction Agent and each Broker-Dealer and the Rating Agency and confirmed in writing promptly thereafter. Each such notice shall state (A) that the Trust proposes to exercise its option to designate a succeeding Special Dividend Period, specifying the first and last days thereof and the Maximum Rate for such Special Dividend Period and (B) that the Trust will by 3:00 P.M., New York City time, on the second Business Day next preceding the first day of such Special Dividend Period, notify the Auction Agent, who will promptly notify the Broker-Dealers, of either (x) its determination, subject to certain conditions, to proceed with such Special Dividend Period, subject to the terms of any Specific Redemption Provisions, or (y) its determination not to proceed with such Special Dividend Period, in which latter event the succeeding Dividend Period shall be a Standard Dividend Period. No later than 3:00 P.M., New York City time, on the second Business Day next preceding the first day of any proposed Special Dividend Period, the Trust shall deliver to the Auction Agent, who will promptly deliver to the Broker-Dealers and Existing Holders, either:

(i) a notice stating (A) that the Trust has determined to designate the next succeeding Dividend Period as a Special Dividend Period, specifying the first and last days thereof and (B) the terms of any Specific Redemption Provisions; or

(ii) a notice stating that the Trust has determined not to exercise its option to designate a Special Dividend Period.

If the Trust fails to deliver either such notice with respect to any designation of any proposed Special Dividend Period to the Auction Agent by 3:00 P.M., New York City time, on the second Business Day next preceding the first day of such proposed Special Dividend Period, the Trust shall be deemed to have delivered a notice to the Auction Agent with respect to such Dividend Period to the effect set forth in clause (ii) above, thereby resulting in a Standard Dividend Period.

5. Restrictions on Transfer. Shares of each Series may be transferred only (a) pursuant to an order placed in an Auction, (b) to or through a Broker-Dealer or (c) to the Trust or any Affiliate.

A-9

Notwithstanding the foregoing, a transfer other than pursuant to an Auction will not be effective unless the selling Existing Holder or the Agent Member of such Existing Holder, in the case of an Existing Holder whose shares are listed in its own name on the books of the Auction Agent, or the Broker-Dealer or Agent Member of such Broker-Dealer, in the case of a transfer between persons holding shares of any Series through different Broker-Dealers, advises the Auction Agent of such transfer. The certificates representing the shares of each Series issued to the Securities Depository will bear legends with respect to the restrictions described above and stop-transfer instructions will be issued to the Transfer Agent and/or Registrar.

6. Voting Rights.

(a) Except as otherwise provided in the Declaration or as otherwise required by applicable law, (i) each Holder of shares of any Series shall be entitled to one vote for each share of any Series held on each matter on which the Holders of the Preferred Shares are entitled to vote, and (ii) the holders of the outstanding preferred shares, including each Series, and holders of shares of Common Shares shall vote together as a single class on all matters submitted to the shareholders; provided, however, that, with respect to the election of trustees, the holders of the outstanding preferred shares, including each Series, represented in person or by proxy at a meeting for the election of trustees, shall be entitled, as a class, to the exclusion of the holders of all other securities and classes of shares, including the Common Shares, to elect two trustees of the Trust, each share of preferred, including each Series, entitling the holder thereof to one vote. The identities of the nominees of such trusteeships may be fixed by the Board of Trustees. The Board of Trustees will determine to which class or classes the trustees elected by the outstanding preferred shares will be assigned and the holders of outstanding preferred shares shall only be entitled to elect the trustees so designated as being elected by the holders of preferred shares when their term shall have expired and such trustees appointed by the holders of preferred shares will be allocated as evenly as possible among the classes of trustees. Subject to paragraph (b) of this Section 6, the holders of outstanding shares of Common Shares and outstanding preferred shares, including each Series, voting together as a single class, shall be entitled to elect the balance of the trustees.

(b) If at any time dividends on the Preferred Shares shall be unpaid in an amount equal to two full years' dividends on the Preferred Shares (a "Voting Period"), the number of trustees constituting the Board of Trustees shall be automatically increased by the smallest number of additional trustees that, when added to the number of trustees then constituting the Board of Trustees, shall (together with the two trustees elected by the holders of preferred shares, including each Series, pursuant to paragraph (a) of this
Section 6) constitute a majority of such increased number, and the holders of any shares of preferred shares, including each Series, shall be entitled, voting as a single class on a one-vote-per-share basis (to the exclusion of the holders of all other securities and classes of shares of the Trust), to elect the smallest number of such additional trustees of the Trust that shall constitute a majority of the total number of trustees of the Trust so increased. The Voting Period and the voting rights so created upon the occurrence of the conditions set forth in this paragraph (b) of Section 6 shall continue unless and until all dividends in arrears on each Series shall have been paid or declared and sufficient cash or specified securities are set apart for the payment of such dividends. Upon the termination of a Voting Period, the voting rights described in this paragraph (b) of Section 6 shall cease, subject always, however, to the revesting of such voting rights in the holders of preferred shares, including each Series, upon the further occurrence of any of the events described in this paragraph (b) of Section 6.

(c) As soon as practicable after the accrual of any right of the holders of preferred shares, including each Series, to elect additional trustees as described in paragraph (b) of this Section 6, the Trust shall notify the Auction Agent, and the Auction Agent shall call a special meeting of such holders, by mailing a notice of such special meeting to such holders, such meeting to be held not less than ten nor more than 90 days after the date of mailing of such notice. If the Trust fails to send such notice to

A-10

the Auction Agent or if the Auction Agent does not call such a special meeting, it may be called by any such holder on like notice. The record date for determining the holders entitled to notice of and to vote at such special meeting shall be the close of business on the fifth Business Day preceding the day on which such notice is mailed. At any such special meeting and at each meeting of holders of preferred shares, including each Series, held during a Voting Period at which trustees are to be elected, such holders, voting together as a class (to the exclusion of the holders of all other securities and classes of shares of the Trust), shall be entitled to elect the number of trustees prescribed in paragraph (b) of this Section 6 on a one-vote-per-share basis. At any such meeting or adjournment thereof in the absence of a quorum, a majority of the holders of preferred shares, including Holders of the Preferred Shares, present in person or by proxy shall have the power to adjourn the meeting without notice, other than an announcement at the meeting, until a quorum is present.

(d) For purposes of determining any rights of the holders of the shares of preferred shares, including each Series, to vote on any matter, whether such right is created by this Statement, by statute or otherwise, if redemption of some or all of the preferred shares, including each Series, is required, no holder of preferred shares, including each Series, shall be entitled to vote and no preferred shares, including each Series, shall be deemed to be "outstanding" for the purpose of voting or determining the number of shares required to constitute a quorum, if prior to or concurrently with the time of determination, sufficient Deposit Securities for the redemption of such shares have been deposited in the case of Preferred Shares in trust with the Paying Agent for that purpose and the requisite Notice of Redemption with respect to such shares shall have been given as provided in Section 3(b) of Part I of this Statement and in the case of other preferred shares, the Trust has otherwise met the conditions for redemption applicable to such shares.

(e) The terms of office of all persons who are trustees of the Trust at the time of a special meeting of Holders of the Preferred Shares and holders of other preferred shares to elect trustees pursuant to paragraph (b) of this Section 6 shall continue, notwithstanding the election at such meeting by the holders of the number of trustees that they are entitled to elect.

(f) Simultaneously with the termination of a Voting Period, the terms of office of the additional trustees elected by the Holders of the Preferred Shares and holders of other preferred shares pursuant to paragraph (b) of this Section 6 shall terminate, the remaining trustees shall constitute the trustees of the Trust and the voting rights of such holders to elect additional trustees pursuant to paragraph (b) of this Section 6 shall cease, subject to the provisions of the last sentence of paragraph (b) of this Section 6.

(g) Unless otherwise required by law or in the Trust's Declaration, the Holders of Preferred Shares shall not have any relative rights or preferences or other special rights other than those specifically set forth herein. In the event that the Trust fails to pay any dividends on the Preferred Shares or fails to redeem any Preferred Shares which it is required to redeem, or any other event occurs which requires the mandatory redemption of Preferred Shares and the required Notice of Redemption has not been given, other than the rights set forth in paragraph (a) of Section 3 of Part I of this Statement, the exclusive remedy of the Holders of Preferred Shares shall be the right to vote for trustees pursuant to the provisions of paragraph (b) of this
Section 6. In no event shall the Holders of Preferred Shares have any right to sue for, or bring a proceeding with respect to, such dividends or redemptions or damages for the failure to receive the same.

(h) For so long as any preferred shares, including each Series, are outstanding, the Trust will not, without the affirmative vote of the Holders of a majority of the outstanding preferred shares, (i) institute any proceedings to be adjudicated bankrupt or insolvent, or consent to the institution of bankruptcy or insolvency proceedings against it, or file a petition seeking or consenting to reorganization or relief under any applicable federal or state law relating to bankruptcy or insolvency, or consent to the appointment of a receiver, liquidator, assignee, trustee, sequestrator (or other similar

A-11

official) of the Trust or a substantial part of its property, or make any assignment for the benefit of creditors, or, except as may be required by applicable law, admit in writing its inability to pay its debts generally as they become due or take any corporate action in furtherance of any such action;
(ii) create, incur or suffer to exist, or agree to create, incur or suffer to exist, or consent to cause or permit in the future (upon the happening of a contingency or otherwise) the creation, incurrence or existence of any material lien, mortgage, pledge, charge, security interest, security agreement, conditional sale or trust receipt or other material encumbrance of any kind upon any of the Trust's assets as a whole, except (A) liens the validity of which are being contested in good faith by appropriate proceedings, (B) liens for taxes that are not then due and payable or that can be paid thereafter without penalty, (C) liens, pledges, charges, security interests, security agreements or other encumbrances arising in connection with any indebtedness senior to the Preferred Shares, or arising in connection with any futures contracts or options thereon, interest rate swap or cap transactions, forward rate transactions, put or call options or other similar transactions, (D) liens, pledges, charges, security interests, security agreements or other encumbrances arising in connection with any indebtedness permitted under clause (iii) below and (E) liens to secure payment for services rendered including, without limitation, services rendered by the Trust's Paying Agent and the Auction Agent; or (iii) create, authorize, issue, incur or suffer to exist any indebtedness for borrowed money or any direct or indirect guarantee of such indebtedness for borrowed money or any direct or indirect guarantee of such indebtedness, except the Trust may borrow as may be permitted by the Trust's investment restrictions; provided, however, that transfers of assets by the Trust subject to an obligation to repurchase shall not be deemed to be indebtedness for purposes of this provision to the extent that after any such transaction the Trust has Eligible Assets with an aggregate Discounted Value at least equal to the Preferred Shares Basic Maintenance Amount as of the immediately preceding Valuation Date.

(i) The affirmative vote of the holders of a majority, as defined in the 1940 Act, of the outstanding preferred shares, including each Series, voting as a separate class, shall be required to approve any plan of reorganization (as such term is used in the 1940 Act) adversely affecting such shares or any action requiring a vote of security holders of the Trust under
Section 13(a) of the 1940 Act. In the event a vote of holders of preferred shares is required pursuant to the provisions of Section 13(a) of the 1940 Act, the Trust shall, not later than ten Business Days prior to the date on which such vote is to be taken, notify each Rating Agency that such vote is to be taken and the nature of the action with respect to which such vote is to be taken and shall, not later than ten Business Days after the date on which such vote is taken, notify each Rating Agency of the results of such vote.

(j) The affirmative vote of the Holders of a majority, as defined in the 1940 Act, of the outstanding preferred shares of any series, voting separately from any other series, shall be required with respect to any matter that materially and adversely affects the rights, preferences, or powers of that series in a manner different from that of other series or classes of the Trust's shares of beneficial interest. For purposes of the foregoing, no matter shall be deemed to adversely affect any rights, preference or power unless such matter (i) alters or abolishes any preferential right of such series; (ii) creates, alters or abolishes any right in respect of redemption of such series; or (iii) creates or alters (other than to abolish) any restriction on transfer applicable to such series. The vote of holders of any series described in this
Section (j) will in each case be in addition to a separate vote of the requisite percentage of Common Shares and/or preferred shares necessary to authorize the action in question.

(k) The Board of Trustees, without the vote or consent of any holder of preferred shares, including each Series, or any other shareholder of the Trust, may from time to time amend, alter or repeal any or all of the definitions contained herein, add covenants and other obligations of the Trust, or confirm the applicability of covenants and other obligations set forth herein, all in connection with obtaining or maintaining the rating of any Rating Agency with respect to each Series, and any such amendment, alteration or repeal will not be deemed to affect the preferences, rights or powers of Preferred Shares or the Holders thereof, provided that the Board of Trustees receives written confirmation from each relevant Rating Agency (with such confirmation in no event being required to be obtained from a

A-12

particular Rating Agency with respect to definitions or other provisions relevant only to and adopted in connection with another Rating Agency's rating of the Series) that any such amendment, alteration or repeal would not adversely affect the rating then assigned by such Rating Agency.

In addition, subject to compliance with applicable law, the Board of Trustees may amend the definition of Maximum Rate to increase the percentage amount by which the Reference Rate is multiplied to determine the Maximum Rate shown therein without the vote or consent of the holders of preferred shares, including each Series, or any other shareholder of the Trust, but only with confirmation from each Rating Agency, and after consultation with the Broker-Dealers, provided that immediately following any such increase the Trust would meet the Preferred Shares Basic Maintenance Amount test.

The Board of Trustees may amend the definition of Standard Dividend Period to change the Dividend Period with respect to one or more Series without the vote or consent of the holders of shares of preferred including each Series, or any other shareholders of the Trust, and any such change will not be deemed to affect the preference rights or powers of Preferred Shares or the holders thereof.

7. Liquidation Rights.

(a) In the event of any liquidation, dissolution or winding up of the affairs of the Trust, whether voluntary or involuntary, the holders of preferred shares, including each Series, shall be entitled to receive out of the assets of the Trust available for distribution to shareholders, after claims of creditors but before distribution or payment shall be made in respect of the Common Shares or to any other shares of beneficial interest of the Trust ranking junior to the preferred shares, as to liquidation payments, a liquidation distribution in the amount of $25,000 per share (the "Liquidation Preference"), plus an amount equal to all unpaid dividends accrued to and including the date fixed for such distribution or payment (whether or not declared by the Board of Trustees, but excluding interest thereon), but such Holders shall be entitled to no further participation in any distribution or payment in connection with any such liquidation, dissolution or winding up. Each Series shall rank on a parity with shares of any other series of preferred shares of the Trust (including each Series) as to the distribution of assets upon dissolution, liquidation or winding up of the affairs of the Trust.

(b) If, upon any such liquidation, dissolution or winding up of the affairs of the Trust, whether voluntary or involuntary, the assets of the Trust available for distribution among the holders of all outstanding preferred shares, including each Series, shall be insufficient to permit the payment in full to such holders of the amounts to which they are entitled, then such available assets shall be distributed among the holders of all outstanding preferred shares, including each Series, ratably in any such distribution of assets according to the respective amounts which would be payable on all such shares if all amounts thereon were paid in full. Unless and until payment in full has been made to the holders of all outstanding preferred shares, including each Series, of the liquidation distributions to which they are entitled, no dividends or distributions will be made to holders of Common Shares or any shares of beneficial interest of the Trust ranking junior to the preferred shares as to liquidation.

(c) Neither the consolidation nor merger of the Trust with or into any other business entity, nor the sale, lease, exchange or transfer by the Trust of all or substantially all of its property and assets, shall be deemed to be a liquidation, dissolution or winding up of the Trust for purposes of this
Section 7.

(d) After the payment to Holders of Preferred Shares of the full preferential amounts provided for in this Section 7, the Holders of the Preferred Shares as such shall have no right or claim to any of the remaining assets of the Trust.

(e) In the event the assets of the Trust or proceeds thereof available for distribution to the Holders of Preferred Shares, upon dissolution, liquidation or winding up of the affairs of the Trust, whether voluntary or involuntary, shall be insufficient to pay in full all amounts to which such Holders are entitled pursuant to paragraph (a) of this Section 7, no such distribution shall be made on account of any shares of any other series of preferred shares unless proportionate distributive amounts shall be paid on account of

A-13

the Preferred Shares, ratably, in proportion to the full distributable amounts to which holders of all preferred shares are entitled upon such dissolution, liquidation or winding up.

(f) Subject to the rights of the holders of other preferred shares or after payment shall have been made in full to the Holders of Preferred Shares as provided in paragraph (a) of this Section 7, but not prior thereto, any other series or class of shares ranking junior to the Preferred Shares with respect to the distribution of assets upon dissolution, liquidation or winding up of the affairs of the Trust shall, subject to any respective terms and provisions (if any) applying thereto, be entitled to receive any and all assets remaining to be paid or distributed, and the Holders of the Preferred Shares shall not be entitled to share therein.

8. Auction Agent. For so long as any Preferred Shares are Outstanding, the Auction Agent, duly appointed by the Trust to so act, shall be in each case a commercial bank, trust company or other financial institution independent of the Trust and its Affiliates (which, however, may engage or have engaged in business transactions with the Trust or its Affiliates) and at no time shall the Trust or any of its Affiliates act as the Auction Agent in connection with the Auction Procedures. If the Auction Agent resigns or for any reason its appointment is terminated during any period that any shares of any Series are Outstanding, the Trust will use its best efforts to enter into an agreement with a successor auction agent containing substantially the same terms and conditions as the auction agency agreement. The Fund may remove the Auction Agent provided that prior to such removal the Fund shall have entered into such an agreement with a successor auction agent.

9. 1940 Act Preferred Shares Asset Coverage. The Trust shall maintain, as of the last Business Day of each month in which any Preferred Shares are Outstanding, the 1940 Act Preferred Shares Asset Coverage; provided, however, that Section 3(a)(ii) shall be the sole remedy in the event the Trust fails to do so.

10. Preferred Shares Basic Maintenance Amount. So long as any Preferred Shares are Outstanding and any Rating Agency so requires, the Trust shall maintain, as of each Valuation Date, Moody's Eligible Assets, as applicable, equal to or exceeding 1.30 times the Preferred Shares Basic Maintenance Amount and Fitch Eligible Assets, as applicable, having an aggregate Discounted Value equal to or greater than the Preferred Shares Basic Maintenance Amount; provided, however, that Section 3(a)(ii) shall be the sole remedy in the event the Trust fails to do so.

11. Certain Other Restrictions. So long as any Preferred Shares are Outstanding and Fitch, Moody's or any Other Rating Agency that is rating such shares so requires, the Trust will not, unless it has received written confirmation from Fitch (if Fitch is then rating the Preferred Shares), Moody's (if Moody's is then rating the Preferred Shares) and (if applicable) such Other Rating Agency, that any such action would not impair the rating then assigned by such Rating Agency to the Preferred Shares, engage in any one or more of the following transactions:

(a) except in connection with a refinancing of the Preferred Shares, issue additional shares of any Series of preferred shares, including any Series or reissue any preferred shares, including any Series previously purchased or redeemed by the Trust;

(b) issue senior securities representing indebtedness as defined under the 1940 Act;

(c) engage in any short sales of securities;

(d) lend portfolio securities;

(e) merge or consolidate into or with any other fund.

A-14

12. Compliance Procedures for Asset Maintenance Tests. For so long as any Preferred Shares are Outstanding and any Rating Agency so requires:

(a) As of each Valuation Date, the Trust shall determine (i) the Market Value of each Eligible Asset owned by the Trust on that date, (ii) the Discounted Value of each such Eligible Asset, (iii) whether the Preferred Shares Basic Maintenance Amount Test is met as of that date, (iv) the value (as used in the 1940 Act) of the total assets of the Trust, less all liabilities, and (v) whether the 1940 Act Preferred Shares Asset Coverage is met as of that date.

(b) Upon any failure to meet the Preferred Shares Basic Maintenance Amount Test or 1940 Act Preferred Shares Asset Coverage on any Valuation Date, the Trust may use reasonable commercial efforts (including, without limitation, altering the composition of its portfolio, purchasing Preferred Shares outside of an Auction or, in the event of a failure to file a certificate on a timely basis, submitting the requisite certificate), to meet (or certify in the case of a failure to file a certificate on a timely basis, as the case may be) the Preferred Shares Basic Maintenance Amount Test or 1940 Act Preferred Shares Asset Coverage on or prior to the Asset Coverage Cure Date.

(c) Compliance with the Preferred Shares Basic Maintenance Amount and 1940 Act Preferred Shares Asset Coverage tests shall be determined with reference to those Preferred Shares which are deemed to be Outstanding hereunder.

(d) In the case of the asset coverage requirements for Moody's and Fitch, the auditors must certify once per annum, or as requested by a Rating Agency, the asset coverage test on a date randomly selected by the auditor.

(e) The Trust shall deliver to the Auction Agent and each Rating Agency a certificate which sets forth a determination of items (i)-(iii) of paragraph (a) of this Section 12 (a "Preferred Shares Basic Maintenance Certificate") as of (A) within seven Business Days after the Date of Original Issue, (B) the last Valuation Date of each month, (C) any date requested by any Rating Agency,

A-15

(D) a Business Day on or before any Asset Coverage Cure Date relating to the Trust's cure of a failure to meet the Preferred Shares Basic Maintenance Amount Test, (E) any day that Common Shares or Preferred Shares are redeemed, (F) any day the Fitch Eligible Assets have an aggregate discounted value less than or equal to 110% of the Preferred Shares Basic Maintenance Amount and (G) weekly if Moody's Eligible Assets have an aggregate discounted value less than 1.30 times the Preferred Shares Basic Maintenance Amount. Such Preferred Shares Basic Maintenance Certificate shall be delivered in the case of clause (i)(A) on or before the seventh Business Day after the Date of Original Issue and in the case of all other clauses above on or before the seventh Business Day after the relevant Valuation Date or Asset Coverage Cure Date.

(f) The Trust shall deliver to the Auction Agent and each Rating Agency a certificate which sets forth a determination of items (iv) and
(v) of paragraph (a) of this Section 12 (a "1940 Act Preferred Shares Asset Coverage Certificate") (i) as of the Date of Original Issue, and (ii) as of (A) the last Valuation Date of each quarter thereafter, and (B) as of a Business Day on or before any Asset Coverage Cure Date relating to the failure to meet the 1940 Act Preferred Shares Asset Coverage. Such 1940 Act Preferred Shares Asset Coverage Certificate shall be delivered in the case of clause (i) on or before the seventh Business Day after the Date of Original Issue and in the case of clause (ii) on or before the seventh Business Day after the relevant Valuation Date or the Asset Coverage Cure Date. The certificates required by paragraphs
(d) and (e) of this Section 12 may be combined into a single certificate.

(g) Within ten Business Days of the Date of Original Issue, the Trust shall deliver to the Auction Agent and each Rating Agency a letter prepared by the Trust's independent auditors (an "Auditor's Certificate") regarding the accuracy of the calculations made by the Trust in the Preferred Shares Basic Maintenance Certificate and the 1940 Act Preferred Shares Asset Coverage Certificate required to be delivered by the Trust on or before the seventh Business Day after the Date of Original Issue. Within ten Business Days after delivery of the Preferred Shares Basic Maintenance Certificate and the 1940 Act Preferred Shares Asset Coverage Certificate relating to the last Valuation Date of each fiscal quarter of the Trust, the Trust will deliver to the Auction Agent and each Rating Agency an Auditor's Certificate regarding the accuracy of the calculations made by the Trust in such Certificates and in one other Preferred Shares Basic Maintenance Certificate randomly selected by the Trust's independent auditors during such fiscal quarter. In addition, the Trust will deliver to the persons specified in the preceding sentence an Auditor's Certificate regarding the accuracy of the calculations made by the Trust on each Preferred Shares Basic Maintenance Certificate and 1940 Act Preferred Shares Asset Coverage Certificate delivered in relation to an Asset Coverage Cure Date within ten days after the relevant Asset Coverage Cure Date. If an Auditor's Certificate shows that an error was made in any such report, the calculation or determination made by the Trust's independent auditors will be conclusive and binding on the Trust.

(h) The Auditor's Certificates referred to in paragraph (g) above will confirm, based upon the independent auditor's review of portfolio data provided by the Trust, (i) the mathematical accuracy of the calculations reflected in the related Preferred Shares Basic Maintenance Amount Certificates and 1940 Act Preferred Shares Asset Coverage Certificates and (ii) that, based upon such calculations, the Trust had, at such Valuation Date, met the Preferred Shares Basic Maintenance Amount Test.

(i) In the event that a Preferred Shares Basic Maintenance Certificate or 1940 Act Preferred Shares Asset Coverage Certificate with respect to an applicable Valuation Date is not delivered within the time periods specified in this Section 12, the Trust shall be deemed to have failed to meet the Preferred Shares Basic Maintenance Amount Test or the 1940 Act Preferred Shares Asset Coverage, as the case may be, on such Valuation Date for purposes of Section 12(b) of Part I of this Statement. In the event that a Preferred Shares Basic Maintenance Certificate, a 1940 Act Preferred Shares Asset Coverage

A-16

Certificate or an applicable Auditor's Certificate with respect to an Asset Coverage Cure Date is not delivered within the time periods specified herein, the Trust shall be deemed to have failed to meet the Preferred Shares Basic Maintenance Amount Test or the 1940 Preferred Shares Asset Coverage, as the case may be, as of the related Valuation Date.

13. Notices. All notices or communications hereunder, unless otherwise specified in this Statement, shall be sufficiently given if in writing and delivered in person, by facsimile or mailed by first-class mail, postage prepaid. Notices delivered pursuant to this Section 13 shall be deemed given on the earlier of the date received or the date five days after which such notice is mailed, except as otherwise provided in this Statement or by the Delaware law for notices of shareholders' meetings.

14. Waiver. To the extent permitted by Delaware law, Holders of at least two-thirds of the Outstanding Preferred Shares, acting collectively, or each Series, acting as a separate series, may waive any provision hereof intended for their respective benefit in accordance with such procedures as may from time to time be established by the Board of Trustees.

15. Termination. In the event that no Preferred Shares are Outstanding, all rights and preferences of such shares established and designated hereunder shall cease and terminate, and all obligations of the Trust under this Statement shall terminate.

16. Amendment. Subject to the provisions of this Statement, the Board of Trustees may, by resolution duly adopted without shareholder approval (except as otherwise provided by this Statement or required by applicable law), amend this Statement to reflect any amendments hereto which the Board of Trustees is entitled to adopt pursuant to the terms of Section 6(k) of Part I of this Statement without shareholder approval. To the extent permitted by applicable law, the Board of Trustees may interpret, amend or adjust the provisions of this Statement to resolve any inconsistency or ambiguity or to remedy any patent defect.

17. Definitions. As used in Part I and Part II of this Statement, the following terms shall have the following meanings (with terms defined in the singular having comparable meanings when used in the plural and vice versa), unless the context otherwise requires:

"'AA' Financial Commercial Paper Rate" on any date means (i) the interest equivalent of the 7-day rate, in the case of a Dividend Period which is 7 days or shorter; for Dividend Periods greater than 7 days but fewer than or equal to 31 days, the 30-day rate; for Dividend Periods greater than 31 days but fewer than or equal to 61 days, the 60-day rate; for Dividend Periods greater than 61 days but fewer than or equal to 91 days, the 90 day rate; for Dividend Periods greater than 91 days but fewer than or equal to 270 days, the rate described in clause (ii) below; for Dividend Periods greater than 270 days, the Treasury Index Rate; on commercial paper on behalf of financial issuers whose corporate bonds are rated "AA" by S&P, or the equivalent of such rating by another nationally recognized rating agency, as announced by the Federal Reserve Bank of New York for the close of business on the Business Day immediately preceding such date; or (ii) if the Federal Reserve Bank of New York does not make available such a rate, then the arithmetic average of the interest equivalent of such rates on commercial paper placed on behalf of such issuers, as quoted on a discount basis or otherwise by the Commercial Paper Dealers to the Auction Agent for the close of business on the Business Day immediately preceding such date (rounded to the next highest .001 of 1%). If any Commercial Paper Dealer does not quote a rate required to determine the "AA" Financial Commercial Paper Rate, such rate shall be determined on the basis of the quotations (or quotation) furnished by the remaining Commercial Paper Dealers (or Dealer), if any, or, if there are no such Commercial Paper Dealers, by the Auction Agent as agreed to by Citigroup Global Markets Inc. For purposes of this definition, (A) "Commercial Paper Dealers" shall mean (1) Citigroup Global Markets Inc., Lehman Brothers Inc., Merrill Lynch, Pierce, Fenner & Smith Incorporated and Goldman Sachs & Co.; (2) in lieu

A-17

of any thereof, its respective Affiliate or successor; and (3) in the event that any of the foregoing shall cease to quote rates for commercial paper of issuers of the sort described above, in substitution therefor, a nationally recognized dealer in commercial paper of such issuers then making such quotations selected by the Trust, and (B) "interest equivalent" of a rate stated on a discount basis for commercial paper of a given number of days' maturity shall mean a number equal to the quotient (rounded upward to the next higher one-thousandth of 1%) of (1) such rate expressed as a decimal, divided by (2) the difference between
(x) 1.00 and (y) a fraction, the numerator of which shall be the product of such rate expressed as a decimal, multiplied by the number of days in which such commercial paper shall mature and the denominator of which shall be 360.

"Affiliate" means any person actually known to the Auction Agent to be controlled by, in control of or under common control with the Trust; provided, however, that no Broker-Dealer controlled by, in control of or under common control with the Trust shall be deemed to be an Affiliate nor shall any corporation or any Person controlled by, in control of or under common control with such corporation, one of the directors or executive officers of which is a trustee of the Trust be deemed to be an Affiliate solely because such director or executive officer is also a trustee of the Trust.

"Agent Member" means a member of or a participant in the Securities Depository that will act on behalf of a Bidder.

"All Hold Rate" means the 7-day "AA" Financial Commercial Paper Rate in the case of the Series M, TU, W, TH, and F Preferred Shares and the 30-day "AA" Financial Commercial Paper Rate in the case of Series A Preferred Shares.

"Applicable Rate" means, with respect to each Series for each Dividend Period (i) if Sufficient Clearing Orders exist for the Auction in respect thereof, the Winning Bid Rate, (ii) if Sufficient Clearing Orders do not exist for the Auction in respect thereof, the Maximum Rate, and (iii) in the case of any Dividend Period if all the shares of a Series are the subject of Submitted Hold Orders for the Auction in respect thereof, the All Hold Rate corresponding to that Series.

"Asset Coverage Cure Date" has the meaning set forth in Section 3(a)(ii) of this Statement.

"Auction" means each periodic operation of the Auction Procedures.

"Auction Agent" means The Bank of New York unless and until another commercial bank, trust company, or other financial institution appointed by a resolution of the Board of Trustees enters into an agreement with the Trust to follow the Auction Procedures for the purpose of determining the Applicable Rate.

"Auction Date" means the first Business Day next preceding the first day of a Dividend Period for each Series.

"Auction Procedures" means the procedures for conducting Auctions as set forth in Part II of this Statement.

"Auditor's Certificate" has the meaning set forth in Section 12(g) of

Part I of this Statement.

"Beneficial Owner," with respect to shares of each Series, means a customer of a Broker-Dealer who is listed on the records of that Broker-Dealer (or, if applicable, the Auction Agent) as a holder of shares of such series.

A-18

"Bid" has the meaning set forth in Section 2(a)(ii) of Part II of this Statement.

"Bidder" has the meaning set forth in Section 2(a)(ii) of Part II of this Statement, provided, however, that neither the Trust nor any Affiliate shall be permitted to be a Bidder in an Auction.

"Board of Trustees" or "Board" means the Board of Trustees of the Trust or any duly authorized committee thereof as permitted by applicable law.

"Broker-Dealer" means any broker-dealer or broker-dealers, or other entity permitted by law to perform the functions required of a Broker-Dealer by the Auction Procedures, that has been selected by the Trust and has entered into a Broker-Dealer Agreement that remains effective.

"Broker-Dealer Agreement" means an agreement between the Auction Agent and a Broker-Dealer, pursuant to which such Broker-Dealer agrees to follow the Auction Procedures.

"Business Day" means a day on which the New York Stock Exchange is open for trading and which is not a Saturday, Sunday or other day on which banks in The City of New York, New York are authorized or obligated by law to close.

"Code" means the Internal Revenue Code of 1986, as amended.

"Commission" means the Securities and Exchange Commission.

"Common Shares" means the shares of the Trust common shares of beneficial interest, no par value.

"Date of Original Issue" means the date on which a Series is originally issued by the Trust.

"Default" has the meaning set forth in Section 2(c)(ii) of Part I of this Statement.

"Default Period" has the meaning set forth in Sections 2(c)(ii) or
(iii) of Part I of this Statement.

"Default Rate" has the meaning set forth in Section 2(c)(iii) of Part I of this Statement.

"Deposit Securities" means cash and any obligations or securities, including Short Term Money Market Instruments that are Eligible Assets, rated at least AAA or A-1 by S&P, except that, for purposes of optional redemption, such obligations or securities will be considered "Deposit Securities" only if they also are rated at least P-1 by Moody's.

"Discount Factor" means the Fitch Discount Factor (if Fitch is then rating the Preferred Shares), the Moody's Discount Factor (if Moody's is then rating the Preferred Shares) or the discount factor established by any Other Rating Agency which is then rating the Preferred Shares and which so requires, whichever is applicable.

"Discounted Value" means the quotient of the Market Value of an Eligible Asset divided by the applicable Discount Factor, provided that with respect to an Eligible Asset that is currently callable, Discounted Value will be equal to the quotient as calculated above or the call price, whichever is lower, and that with respect to an Eligible Asset that is prepayable, Discounted Value will be equal to the quotient as calculated above or the par value, whichever is lower.

"Dividend Default" has the meaning set forth in Section 2(c)(iii) of

Part I of this Statement.

"Dividend Payment Date" with respect to the Preferred Shares means any date on which dividends are payable pursuant to Section 2(b) of Part I of this Statement.

A-19

"Dividend Period" means, with respect to each Series, the initial period from the Date of Original Issue to the initial Dividend Payment Date set forth under "Designation" above, and thereafter, as to such Series, the period commencing on the Business Day following each Dividend Period for such Series and ending on the calendar day immediately preceding the next Dividend Payment Date for such Series.

"Eligible Assets" means Moody's Eligible Assets (if Moody's is then rating the Preferred Shares), Fitch Eligible Assets (if Fitch is then rating the Preferred Shares), and/or Other Rating Agency Eligible Assets if any Other Rating Agency is then rating the Preferred Shares, whichever is applicable.

"Existing Holder" has the meaning set forth in Section 1(d) of Part II of this Statement.

"Fitch" means Fitch Ratings.

"Fitch Discount Factor" means, for the purposes of determining the Discounted Value of any Fitch Eligible Asset, the percentage determined as follows. The Fitch Discount Factor for any Fitch Eligible Asset other than the securities set forth below will be the percentage provided in writing by Fitch.

(i) Corporate debt securities. The percentage determined by reference to the rating of a corporate debt security in accordance with the table set forth below.

                                                                                                          NOT
                                                                                                         RATED
                                                                                                          OR
        TERM TO MATURITY OF CORPORATE                                                                    BELOW
           DEBT SECURITY UNRATED(1)                 AAA       AA          A         BBB       BB          BB
----------------------------------------------    --------  -------    -------    -------   -------    ---------
3 years or less (but longer than 1 year)......    106.38%   108.11%    109.89%    111.73%   129.87%     151.52%
5 years or less (but longer than 3 years).....    111.11    112.99     114.94     116.96    134.24      151.52
7 years or less (but longer than 5 years).....    113.64    115.61     117.65     119.76    135.66      151.52
10 years or less (but longer than 7 years)....    115.61    117.65     119.76     121.95    136.74      151.52
15 years or less (but longer than 10 years)...    119.76    121.95     124.22     126.58    139.05      151.52
More than 15 years............................    124.22    126.58     129.03     131.58    144.55      151.52


(1) If a security is not rated by Fitch but is rated by two other Rating Agencies, then the lower of the ratings on the security from the two other Rating Agencies will be used to determine the Fitch Discount Factor (e.g., where the S&P rating is A- and the Moody's rating is Baa1, a Fitch rating of BBB+ will be used). If a security is not rated by Fitch but is rated by only one other Rating Agency, then the rating on the security from the other Rating Agency will be used to determine the Fitch Discount Factor (e.g., where the only rating on a security is an S&P rating of AAA, a Fitch rating of AAA will be used, and where the only rating on a security is a Moody's rating of Ba3, a Fitch rating of BB- will be used). If a security is not rated by any Rating Agency, the Trust will use the percentage set forth under "Unrated" in this table.

(ii) Convertible securities. The Fitch Discount Factor applied to convertible securities is (A) 200% for investment grade convertibles and (B) 222% for below investment grade convertibles so long as such convertible securities have neither (x) conversion premium greater than 100% nor (y) have a yield to maturity or yield to worst of >15.00% above the relevant Treasury curve.

A-20

The Fitch Discount Factor applied to convertible securities which have conversion premiums of greater than 100% is (A) 152% for investment grade convertibles and (B) 179% for below investment grade convertibles so long as such convertible securities do not have a yield to maturity or yield to worst of > 15.00% above the relevant Treasury curve.

The Fitch Discount Factor applied to convertible securities which have a yield to maturity or yield to worst of > 15.00% above the relevant Treasury curve is 370%.

If a security is not rated by Fitch but is rated by two other Rating Agencies, then the lower of the ratings on the security from the two other Rating Agencies will be used to determine the Fitch Discount Factor (e.g., where the S&P rating is A- and the Moody's rating is Baa1, a Fitch rating of BBB+ will be used). If a security is not rated by Fitch but is rated by only one other Rating Agency, then the rating on the security from the other Rating Agency will be used to determine the Fitch Discount Factor (e.g., where the only rating on a security is an S&P rating of AAA, a Fitch rating of AAA will be used, and where the only rating on a security is a Moody's rating of Ba3, a Fitch rating of BB- will be used). If a security is not rated by any Rating Agency, the Trust will treat the security as if it were below investment grade.

(iii) Preferred securities: The percentage determined by reference to the rating of a preferred security in accordance with the table set forth below.

                                                                                                         NOT
                                                                                                        RATED
                                                                                                         OR
                                                                                                        BELOW
                   PREFERRED SECURITY(1)             AAA       AA          A        BBB        BB        BB
-----------------------------------------------    -------   -------    -------   --------   -------   -------
             Taxable Preferred.............        130.58%   133.19%    135.91%   138.73%    153.23%   161.08%
             Dividend-Received Deduction
                (DRD) Preferred............        163.40%   163.40%    163.40%   163.40%    201.21%   201.21%


(1) If a security is not rated by Fitch but is rated by two other Rating Agencies, then the lower of the ratings on the security from the two other Rating Agencies will be used to determine the Fitch Discount Factor (e.g., where the S&P rating is A- and the Moody's rating is Baa1, a Fitch rating of BBB+ will be used). If a security is not rated by Fitch but is rated by only one other Rating Agency, then the rating on the security from the other Rating Agency will be used to determine the Fitch Discount Factor (e.g., where the only rating on a security is an S&P rating of AAA, a Fitch rating of AAA will be used, and where the only rating on a security is a Moody's rating of Ba3, a Fitch rating of BB- will be used). If a security is not rated by any Rating Agency, the Trust will use the percentage set forth under "Unrated" in this table.

(iv) U.S. Government Securities and U.S. Treasury Strips:

                                                 DISCOUNT
          TIME REMAINING TO MATURITY              FACTOR
-----------------------------------------------  ---------
1 year or less.................................     100%
2 years or less (but longer than 1 year).......     103%
3 years or less (but longer than 2 years)......     105%
4 years or less (but longer than 3 years)......     107%
5 years or less (but longer than 4 years)......     109%
7 years or less (but longer than 5 years)......     112%
10 years or less (but longer than 7 years).....     114%
15 years or less (but longer than 10 years)....     122%
20 years or less (but longer than 15 years)....     130%
25 years or less (but longer than 20 years)....     146%
Greater than 30 years..........................     154%

A-21

(v) Short-Term Investments and Cash: The Fitch Discount Factor applied to short-term portfolio securities, including without limitation Debt Securities, Short Term Money Market Instruments and municipal debt obligations, will be (A) 100%, so long as such portfolio securities mature or have a demand feature at par exercisable within the Fitch Exposure Period; (B) 115%, so long as such portfolio securities mature or have a demand feature at par not exercisable within the Fitch Exposure Period; and (C) 125%, so long as such portfolio securities neither mature nor have a demand feature at par exercisable within the Fitch Exposure Period. A Fitch Discount Factor of 100% will be applied to cash.

(vi) Rule 144A Securities: The Fitch Discount Factor applied to Rule 144A Securities will be 110% of the Fitch Discount Factor which would apply were the securities registered under the Securities Act.

(vii) Foreign Bonds: The Fitch Discount Factor (A) for a Foreign Bond the principal of which (if not denominated in U.S. dollars) is subject to a currency hedging transaction will be the Fitch Discount Factor that would otherwise apply to such Foreign Bonds in accordance with this definition and (B) for (1) a Foreign Bond the principal of which (if not denominated in U.S. dollars) is not subject to a currency hedging transaction and (2) a bond issued in a currency other than U.S. dollars by a corporation, limited liability company or limited partnership domiciled in, or the government or any agency, instrumentality or political subdivision of, a nation other than an Approved Foreign Nation, will be 370%.

"Fitch Eligible Assets" means:

(i) cash (including interest and dividends due on assets rated (A) BBB or higher by Fitch or the equivalent by another Rating Agency if the payment date is within five Business Days of the Valuation Date, (B) A or higher by Fitch or the equivalent by another Rating Agency if the payment date is within thirty days of the Valuation Date, and (C) A+ or higher by Fitch or the equivalent by another Rating Agency if the payment date is within the Fitch Exposure Period) and receivables for Fitch Eligible Assets sold if the receivable is due within five Business Days of the Valuation Date, and if the trades which generated such receivables are settled within five business days;

(ii) Short Term Money Market Instruments so long as (A) such securities are rated at least F1+ by Fitch or the equivalent by another Rating Agency, (B) in the case of demand deposits, time deposits and overnight funds, the supporting entity is rated at least A by Fitch or the equivalent by another Rating Agency, or (C) in all other cases, the supporting entity (1) is rated at least A by Fitch or the equivalent by another Rating Agency and the security matures within one month, (2) is rated at least A by Fitch or the equivalent by another Rating Agency and the security matures within three months or (3) is rated at least AA by Fitch or the equivalent by another Rating Agency and the security matures within six months;

(iii) U.S. Government Securities and U.S. Treasury Strips;

(iv) debt securities if such securities have been registered under the Securities Act or are restricted as to resale under federal securities laws but are eligible for resale pursuant to Rule 144A under the Securities Act as determined by the Trust's investment manager or portfolio manager acting pursuant to procedures approved by the Board of Trustees of the Trust; and such securities are issued by (1) a U.S. corporation, limited liability company or limited partnership, (2) a corporation, limited liability company or limited partnership domiciled in Argentina, Australia, Brazil, Chile, France, Germany, Italy, Japan, Korea, Mexico, Spain or the

A-22

United Kingdom (the "Approved Foreign Nations"), (3) the government of any Approved Foreign Nation or any of its agencies, instrumentalities or political subdivisions (the debt securities of Approved Foreign Nation issuers being referred to collectively as "Foreign Bonds"), (4) a corporation, limited liability company or limited partnership domiciled in Canada or (5) the Canadian government or any of its agencies, instrumentalities or political subdivisions (the debt securities of Canadian issuers being referred to collectively as "Canadian Bonds"). Foreign Bonds held by the Trust will qualify as Fitch Eligible Assets only up to a maximum of 20% of the aggregate Market Value of all assets constituting Fitch Eligible Assets. Similarly, Canadian Bonds held by the Trust will qualify as Fitch Eligible Assets only up to a maximum of 20% of the aggregate Market Value of all assets constituting Fitch Eligible Assets. Notwithstanding the limitations in the two preceding sentences, Foreign Bonds and Canadian Bonds held by the Trust will qualify as Fitch Eligible Assets only up to a maximum of 30% of the aggregate Market Value of all assets constituting Fitch Eligible Assets. In addition, bonds which are issued in connection with a reorganization under U.S. federal bankruptcy law ("Reorganization Bonds") will be considered debt securities constituting Fitch Eligible Assets if (a) they provide for periodic payment of interest in cash in U.S. dollars or euros; (b) they do not provide for conversion or exchange into equity capital at any time over their lives; (c) they have been registered under the Securities Act or are restricted as to resale under federal securities laws but are eligible for trading under Rule 144A promulgated pursuant to the Securities Act as determined by the Trust's investment manager or portfolio manager acting pursuant to procedures approved by the Board of Trustees of the Trust; (d) they were issued by a U.S. corporation, limited liability company or limited partnership; and (e) at the time of purchase at least one year had elapsed since the issuer's reorganization. Reorganization Bonds may also be considered debt securities constituting Fitch Eligible Assets if they have been approved by Fitch, which approval shall not be unreasonably withheld. All debt securities satisfying the foregoing requirements and restrictions of this paragraph (iv) are herein referred to as "Debt Securities."

(v) Preferred stocks if (A) dividends on such preferred stock are cumulative, (B) such securities provide for the periodic payment of dividends thereon in cash in U.S. dollars or euros and do not provide for conversion or exchange into, or have warrants attached entitling the holder to receive equity capital at any time over the respective lives of such securities, (C) the issuer of such a preferred stock has common stock listed on either the New York Stock Exchange or the American Stock Exchange, (D) the issuer of such a preferred stock has a senior debt rating or preferred stock rating from Fitch of BBB- or higher or the equivalent rating by another Rating Agency. In addition, the preferred stocks issue must be at least $50 million;

(vi) Asset-backed and mortgage-backed securities;

(vii) Rule 144A Securities;

(viii) Bank Loans;

(ix) Municipal debt obligation that (A) pays interest in cash (B) is part of an issue of municipal debt obligations of at least $5 million, except for municipal debt obligations rated below A by Fitch or the equivalent rating by another Rating Agency, in which case the minimum issue size is $10 million;

(x) Tradable credit baskets (e.g., Traded Custody Receipts or TRACERS and Targeted Return Index Securities Trust or TRAINS);

(xi) Convertible debt and convertible preferred stocks;

A-23

(xii) Financial contracts, as such term is defined in Section 3(c)(2)(B)(ii) of the Investment Company Act, not otherwise provided for in this definition may be included in Fitch Eligible Assets, but, with respect to any financial contract, only upon receipt by the Trust of a writing from Fitch specifying any conditions on including such financial contract in Fitch Eligible Assets and assuring the Trust that including such financial contract in the manner so specified would not affect the credit rating assigned by Fitch to the Preferred Shares;

(xiii) Interest rate swaps entered into according to International Swap Dealers Association ("ISDA") standards if (1) the counterparty to the swap transaction has a short-term rating of not less than F1 by Fitch or the equivalent by another, NRSRO, or, if the swap counterparty does not have a short-term rating, the counterparty's senior unsecured long-term debt rating is AA or higher by Fitch or the equivalent by another NRSRO and (2) the original aggregate notional amount of the interest rate swap transaction or transactions is not greater than the liquidation preference of the Preferred Shares originally issued.

Where the Trust sells an asset and agrees to repurchase such asset in the future, the Discounted Value of such asset will constitute a Fitch Eligible Asset and the amount the Trust is required to pay upon repurchase of such asset will count as a liability for the purposes of the Preferred Shares Basic Maintenance Amount. Where the Trust purchases an asset and agrees to sell it to a third party in the future, cash receivable by the Trust thereby will constitute a Fitch Eligible Asset if the long-term debt of such other party is rated at least A- by Fitch or the equivalent by another Rating Agency and such agreement has a term of 30 days or less; otherwise the Discounted Value of such purchased asset will constitute a Fitch Eligible Asset.

Notwithstanding the foregoing, an asset will not be considered a Fitch Eligible Asset to the extent that it has been irrevocably deposited for the payment of (i)(A) through (i)(E) under the definition of Preferred Shares Basic Maintenance Amount or to the extent it is subject to any Liens, except for (A) Liens which are being contested in good faith by appropriate proceedings and which Fitch has indicated to the Trust will not affect the status of such asset as a Fitch Eligible Asset, (B) Liens for taxes that are not then due and payable or that can be paid thereafter without penalty, (C) Liens to secure payment for services rendered or cash advanced to the Trust by its investment manager or portfolio manager, the Trust's custodian, transfer agent or registrar or the Auction Agent and (D) Liens arising by virtue of any repurchase agreement.

Portfolio holdings as described above must be within the following diversification and issue size requirements in order to be included in Fitch's Eligible Assets:

                                                                    MINIMUM
      SECURITY              MAXIMUM             MAXIMUM            ISSUE SIZE
        RATED                SINGLE              SINGLE              ($ IN
      AT LEAST             ISSUER(1)         INDUSTRY(1)(2)       MILLION)(3)
----------------------     ----------        --------------       -------------
          AAA                  100%                100%                $100
          AA-                   20                  75                  100
           A-                   10                  50                  100
         BBB-                    6                  25                  100
          BB-                    4                  16                   50
           B-                    3                  12                   50
          CCC                    2                   8                   50


(1) Percentages represent a portion of the aggregate market value of corporate debt securities.
(2) Industries are determined according to Fitch's Industry Classifications, as defined herein.
(3) Preferred stock has a minimum issue size of $50 million.

A-24

"Fitch Exposure Period" means the period commencing on (and including) a given Valuation Date and ending 41 days thereafter.

"Fitch Hedging Transactions" means purchases or sales of exchange-traded financial futures contracts based on any index approved by Fitch or Treasury Bonds, and purchases, writings or sales of exchange-traded put options on such futures contracts, any index approved by Fitch or Treasury Bonds and purchases, writings or sales of exchange-traded call options on such financial futures contracts, any index approved by Fitch or Treasury bonds ("Fitch Hedging Transactions"), subject to the following limitations:

(i) The Fund may not engage in any Fitch Hedging Transaction based on any index approved by Fitch (other than transactions that terminate a futures contract or option held by the Fund by the Fund's taking the opposite position thereto ("closing transactions")) that would cause the Fund at the time of such transaction to own or have sold outstanding financial futures contracts based on such index exceeding in number 10% of the average number of daily traded financial futures contracts based on such index in the 30 days preceding the time of effecting such transaction as reported by The Wall Street Journal.

(ii) The Fund will not engage in any Fitch Hedging Transaction based on Treasury Bonds (other than closing transactions) that would cause the Fund at the time of such transaction to own or have sold:

(A) Outstanding financial futures contracts based on Treasury Bonds with such contracts having an aggregate market value exceeding 20% of the aggregate market value of Fitch Eligible Assets owned by the Fund and rated AA by Fitch (or, if not rated by Fitch Ratings, rated Aa by Moody's; or, if not rated by Moody's, rated AAA by S&P) or

(B) Outstanding financial futures contracts based on Treasury Bonds with such contracts having an aggregate market value exceeding 40% of the aggregate market value of all Fitch Eligible Assets owned by the Fund (other than Fitch Eligible Assets already subject to a Fitch Hedging Transaction) and rated A or BBB by Fitch (or, if not rated by Fitch Ratings, rated Baa by Moody's; or, if not rated by Moody's, rated A or AA by S&P) (for purposes of the foregoing clauses (i) and
(ii), the Fund shall be deemed to own futures contracts that underlie any outstanding options written by the Fund);

(iii) The Fund may engage in closing transactions to close out any outstanding financial futures contract based on any index approved by Fitch if the amount of open interest in such index as reported by The Wall Street Journal is less than an amount to be mutually determined by Fitch and the Fund.

(iv) The Fund may not enter into an option or futures transaction unless, after giving effect thereto, the Fund would continue to have Fitch Eligible Assets with an aggregate Discounted Value equal to or greater than the Preferred Shares Basic Maintenance Amount.

"Fitch Industry Classification" means, for the purposes of determining Fitch Eligible Assets, each of the following industry classifications:

Fitch Industry Classifications                  SIC Code (Major Groups)
1.       Aerospace & Defense                         37, 45
2.       Automobiles                                 37, 55

A-25

3.       Banking, Finance and Real Estate       60, 65, 67
4.       Broadcasting and Media                 27, 48
5.       Building and Materials                 15-17, 32, 52
6.       Cable                                  48
7.       Chemicals                              28, 30
8.       Computers and Electronics              35, 36
9.       Consumer Products                      23, 51
10.      Energy                                 13, 29, 49
11.      Environmental Services                 87
12.      Farming and Agriculture                1-3, 7-9
13.      Food, Beverage and Tobacco             20, 21, 54
14.      Gaming, Lodging and Restaurants        70, 58
15.      Health Care and Pharmaceutical         38, 28, 80
16.      Industrial/Manufacturing               35
17.      Insurance                              63, 64
18.      Leisure and Entertainment              78, 79
19.      Metals and Mining                      10, 12, 14, 33, 34
20.      Miscellaneous                          50, 72-76, 99
21.      Paper and Forest Products              8, 24, 26
22.      Retail                                 53, 56, 59
23.      Sovereign                              NA
24.      Supermarkets and Drug Stores           54
25.      Telecommunications                     48
26.      Textiles and Furniture                 22, 25, 31, 57
27.      Transportation                         40, 42-47
28.      Utilities                              49
29.      Structured Finance Obligations         NA
30.      Packaging and Containers               26, 32, 34
31.      Business Services                      73, 87

The Trust shall use its discretion in determining which industry classification is applicable to a particular investment.

"Hold Order" has the meaning set forth in Section 2(a)(ii) of Part II of this Statement.

"Holder" means, with respect to the Preferred Shares, the registered holder of shares of each Series as the same appears on the share ledger or share records of the Trust.

"Investment Manager" means Calamos Asset Management, Inc.

"Liquidation Preference" means $25,000 per preferred share.

"Mandatory Redemption Date" has meaning set forth in Section 3(a)(iv) of Part I of this Statement.

"Mandatory Redemption Price" has the meaning set forth in Section 3(a)(iii) of Part I of this Statement.

"Market Value" means the fair market value of an asset of the Trust as computed as follows:

The values of the securities in the Trust are based on market prices from the primary market in which they are traded. As a general rule, equity securities listed on a U.S. securities exchange or Nasdaq National Market are valued at the last quoted sale priced on the day the valuation is made. Bonds and other fixed-income securities that are traded over the counter and on an exchange will be valued according to the broadest and most representative market, and it is expected this will ordinarily be the over-the-counter market. The foreign securities held by the Trust are traded on exchanges throughout the world. Trading on these foreign securities exchanges is completed at various times throughout the day and often does not coincide with the close of trading on the New York Stock Exchange. The value of foreign securities is determined at the close of trading of the exchange on which the securities are traded or at the close of trading on the New York Stock Exchange, whichever is earlier. If market prices are not readily available or the Trust's valuation methods do not produce a value reflective of the fair value of the security, securities and other assets are priced at a fair value as determined by the Board of Trustees or a committee thereof.

"Maximum Rate" means, on any date on which the Applicable Rate is determined, the applicable percentage of the "AA" Financial Commercial Paper Rate on the date of such Auction determined as set forth below based on the lower of the credit ratings assigned to the Preferred Shares by Moody's and Fitch subject to upward but not downward adjustment in the discretion of the Board of Trustees after consultation with the Broker-Dealers; provided that immediately following any such increase the Trust would be in compliance with the Preferred Shares Basic Maintenance Amount.

A-26

             MOODY'S CREDIT RATING         FITCH CREDIT RATING        APPLICABLE PERCENTAGE
------------------------------------      --------------------        ---------------------
             Aa3 or Above                 AA- or Above                            150%
             A3 or a1                     A- to A+                                200%
             baa3 to baa1                 BBB- to BBB+                            250%
             Below baa3                   Below BBB-                              275%

"Moody's" means Moody's Investors Service, Inc. and its successors at law.

"Moody's Discount Factor" means, for purposes of determining the Discounted Value of any Moody's Eligible Asset, the percentage determined as follows. According to Moody's guidelines, in addition to standard monthly reporting, the Fund must notify Moody's if the portfolio coverage ratio of the discounted value of Moody's Eligible Assets to liabilities is less than 130%. Computation of rating agency asset coverage ratio requires use of the Diversification Table prior to applying discount factors noted below and after identifying Moody's eligible assets for purposes of completing basic maintenance tests. The Moody's Discount Factor for any Moody's Eligible Asset other than the securities set forth below will be the percentage provided in writing by Moody's.

(i) Convertible securities (including convertible preferreds):

                                        DISCOUNT FACTORS(1)
                      --------------------------------------------------------
    RATINGS(2)        UTILITY       INDUSTRIAL    FINANCIAL     TRANSPORTATION
------------------    ---------     ----------    ---------     --------------
Aaa............          162%          256%          233%             250%
Aa.............          167%          261%          238%             265%
A..............          172%          266%          243%             275%
Baa............          188%          282%          259%             285%
Ba.............          195%          290%          265%             290%
B..............          199%          293%          270%             295%
NR.............          300%          300%          300%             300%


(1) Discount factors are for 7-week exposure period.

(2) Unless conclusions regarding liquidity risk as well as estimates of both the probability and severity of default for the Fund's assets can be derived from other sources, securities rated below B by Moody's and unrated securities, which are securities rated by neither Moody's, S&P nor Fitch, are limited to 10% of Moody's Eligible Assets. If a corporate, municipal or other debt security is unrated by Moody's, S&P or Fitch, the Fund will use the percentage set forth under "Below B and Unrated" in this table. Ratings assigned by S&P or Fitch are generally accepted by Moody's at face value. However, adjustments to face value may be made to particular categories of credits for which the S&P and/or Fitch rating does not seem to approximate a Moody's rating equivalent.

Upon conversion to common stock, the discount Factors applicable to common stock will apply:

        COMMON STOCKS              UTILITY       INDUSTRIAL      FINANCIAL
-----------------------------      ---------     ----------      ---------
7 week exposure period.....           170%           264%            241%

(ii) Corporate Debt Securities (non-convertible): The percentage determined by reference to the rating on such asset with reference to the remaining term to maturity of such asset, in accordance with the table set forth below.

A-27

                                                                       MOODY'S RATING CATEGORY(1)
                                                  -----------------------------------------------------------

  TERMS TO MATURITY OF CORPORATE DEBT
                  SECURITY                         AAA      AA       A      BAA      BA       B     UNRATED
---------------------------------------------     ------  -----   ------    -----   -----    ----   -------
1 year or less...............................      109%    112%    115%     118%    137%     150%      250%
2 years or less (but longer than 1 year).....      115     118     122      125     146      160       250
3 years or less (but longer than 2 years)....      120     123     127      131     153      168       250
4 years or less (but longer than 3 years)....      126     129     133      138     161      176       250
5 years or less (but longer than 4 years)....      132     135     139      144     168      185       250
7 years or less (but longer than 5 years)....      139     143     147      152     179      197       250
10 years or less (but longer than 7 years)...      145     150     155      160     189      208       250
15 years or less (but longer than 10 years)..      150     155     160      165     196      216       250
20 years or less (but longer than 15 years)..      150     155     160      165     196      228       250
30 years or less (but longer than 20 years)..      150     155     160      165     196      229       250
Greater than 30 years........................      165     173     181      189     205      240       250


(1) Unless conclusions regarding liquidity risk as well as estimates of both the probability and severity of default for the Fund's assets can be derived from other sources, securities rated below B by Moody's and unrated securities, which are securities rated by neither Moody's, S&P nor Fitch, are limited to 10% of Moody's Eligible Assets. If a corporate, municipal or other debt security is unrated by Moody's, S&P or Fitch, the Fund will use the percentage set forth under "Below B and Unrated" in this table. Ratings assigned by S&P or Fitch are generally accepted by Moody's at face value. However, adjustments to face value may be made to particular categories of credits for which the S&P and/or Fitch rating does not seem to approximate a Moody's rating equivalent.

The Moody's Discount Factors presented in the immediately preceding table will also apply to corporate debt securities that do not pay interest in U.S. dollars or euros, provided that the Moody's Discount Factor determined from the table shall be multiplied by a factor of 120% for purposes of calculating the Discounted Value of such securities.

(iii) Preferred Stock: The Moody's Discount Factor for preferred stock shall be (A) for preferred stocks issued by a utility, 146%; (B) for preferred stocks of industrial and financial issuers, 209%; (C) for preferred stocks issued by real estate related issuers, 154%; and (D) for auction rate preferred stocks, 350%.

(iv) U.S. Government Securities and U.S. Treasury Strips:

                                                    U.S. GOVERNMENT SECURITIES           U.S. TREASURY STRIPS
          REMAINING TERM TO MATURITY                     DISCOUNT FACTOR                   DISCOUNT FACTOR
--------------------------------------------        --------------------------           --------------------
1 year or less..............................                   107%                              107%
2 years or less (but longer than 1 year)....                   113                               115
3 years or less (but longer than 2 years)...                   118                               121
4 years or less (but longer than 3 years)...                   123                               128
5 years or less (but longer than 4 years)...                   128                               135
7 years or less (but longer than 5 years)...                   135                               147
10 years or less (but longer than 7 years)..                   141                               163
15 years or less (but longer than 10 years).                   146                               191
20 years or less (but longer than 15 years).                   154                               218
30 years or less (but longer than 20 years).                   154                               244

(v) Short-Term Instruments and Cash: The Moody's Discount Factor applied to short-term portfolio securities, including without limitation short-term corporate debt securities, Short Term Money Market Instruments and short-term municipal debt obligations, will be (A) 100%, so long as such portfolio securities mature or have a demand feature at par exercisable within the Moody's Exposure Period; (B) 115%, so long as such portfolio securities mature or have a demand feature at par not exercisable within the Moody's Exposure Period; and

A-28

(C) 125%, if such securities are not rated by Moody's, so long as such portfolio securities are rated at least A-1+/AA or SP-1+/AA by S&P and mature or have a demand feature at par exercisable within the Moody's Exposure Period. A Moody's Discount Factor of 100% will be applied to cash. Moody's rated Rule 2a-7 money market funds will also have a discount factor of 100%.

(vi) Rule 144A Securities: The Moody's Discount Factor applied to Rule 144A Securities for Rule 144A Securities will be 130% of the Moody's Discount Factor which would apply were the securities registered under the Securities Act.

"Moody's Eligible Assets" means:

(i) cash (including interest and dividends due on assets rated (A) Baa3 or higher by Moody's if the payment date is within five Business Days of the Valuation Date, (B) A2 or higher if the payment date is within thirty days of the Valuation Date, and (C) A1 or higher if the payment date is within the Moody's Exposure Period) and receivables for Moody's Eligible Assets sold if the receivable is due within five Business Days of the Valuation Date, and if the trades which generated such receivables are (A) settled through clearing house firms with respect to which the Fund has received prior written authorization from Moody's or (B) (1) with counterparties having a Moody's long-term debt rating of at least Baa3 or (2) with counterparties having a Moody's Short Term Money Market Instrument rating of at least P-1;

(ii) Short Term Money Market Instruments, so long as (A) such securities are rated at least P-1, (B) in the case of demand deposits, time deposits and overnight funds, the supporting entity is rated at least A2, or (C) in all other cases, the supporting entity (1) is rated A2 and the security matures within one month, (2) is rated A1 and the security matures within three months or (3) is rated at least Aa3 and the security matures within six months. In addition, Moody's rated Rule 2a-7 money market funds are also eligible investments.

(iii) U.S. Government Securities and U.S. Treasury Strips;

(iv) Rule 144A Securities;

(v) Corporate debt securities if (A) such securities are rated B3 or higher by Moody's; (B) such securities provide for the periodic payment of interest in cash in U.S. dollars or euros, except that such securities that do not pay interest in U.S. dollars or euros shall be considered Moody's Eligible Assets if they are rated by Moody's or S&P or Fitch; (C) for debt securities rated Ba1 and below, no more than 10% of the original amount of such issue may constitute Moody's Eligible Assets; (D) such securities have been registered under the Securities Act or are restricted as to resale under federal securities laws but are eligible for resale pursuant to Rule 144A under the Securities Act as determined by the Fund's investment manager or portfolio manager acting pursuant to procedures approved by the Board of Trustees, except that such securities that are not subject to U.S. federal securities laws shall be considered Moody's Eligible Assets if they are publicly traded; and (E) such securities are not subject to extended settlement.

A-29

(vi) Convertible bonds, provided that (A) the issuer of common stock must have a Moody's senior unsecured debt of B3 or better, or an S&P or Fitch rating of B- or better, (B) the common stocks must be traded on the NYSE, AMEX, or NASDAQ, (C) dividends must be paid in U.S. dollars, (D) the portfolio of convertible bonds must be diversified as set forth in Figure 1 below, (E) the company shall not hold shares exceeding the average weekly trading volume during the preceding month and (F) synthetic convertibles are excluded from asset eligibility.

FIGURE 1

                   CONVERTIBLE BONDS DIVERSIFICATION GUIDELINES
--------------------------------------------------------------------------------
                       MAXIMUM SINGLE       MAXIMUM SINGLE       MAXIMUM SINGLE
       TYPE            ISSUER (%) (1)        INDUSTRY (%)         STATE (%) (1)
--------------------   ---------------      ---------------    -----------------
Utility........                4                    50                    7 (2)
Other..........                6                    20                  n/a

(1) Percentages represent a portion of the aggregate portfolio market value.
(2) Utility companies operating in more than one state should be diversified according to the state in which they generate the largest part of their revenues. Publicly available information on utility company revenues by state is available from the Uniform Statistical Report (USR) or the Federal Energy Regulation commission (FERC).

(vii) Preferred stocks if (A) dividends on such preferred stock are cumulative or if non-cumulative discount factor should be amplified by a factor of 1.10x Moody's listed discount factor, (B) such securities provide for the periodic payment of dividends thereon in cash in U.S. dollars or euros and do not provide for conversion or exchange into, or have warrants attached entitling the holder to receive, equity capital at any time over the respective lives of such securities, (C) the issuer of such a preferred stock has common stock listed on either the New York Stock Exchange or the American Stock Exchange, (D) the issuer of such a preferred stock has a senior debt rating from Moody's of Baa1 or higher or a preferred stock rating from Moody's of Baa3 or higher and (E) such preferred stock has paid consistent cash dividends in U.S. dollars or euros over the last three years or has a minimum rating of A1 (if the issuer of such preferred stock has other preferred issues outstanding that have been paying dividends consistently for the last three years, then a preferred stock without such a dividend history would also be eligible). In addition, the preferred stocks must have the following diversification requirements: (X) the preferred stock issue must be greater than $50 million and (Y) the minimum holding by the Fund of each issue of preferred stock is $500,000 and the maximum holding of preferred stock of each issue is $5 million. In addition, preferred stocks issued by transportation companies will not be considered Moody's Eligible Assets.

(viii) Financial contracts, as such term is defined in Section 3(c)(2)(B)(ii) of the Investment Company Act, not otherwise provided for in this definition but only upon receipt by the Fund of a letter from Moody's specifying any conditions on including such financial contract in Moody's Eligible Assets and assuring the Fund that including such financial contract in the manner so specified would not affect the credit rating assigned by Moody's to the Preferred Shares.

A-30

(ix) Interest rate swaps entered into according to International Swap Dealers Association ("ISDA") standards if (i) the counterparty to the swap transaction has a short-term rating of not less than P-1 or, if the counterparty does not have a short-term rating, the counterparty's senior unsecured long-term debt rating is A3 or higher and (ii) the original aggregate notional amount of the interest rate swap transaction or transactions is not to be greater than the liquidation preference of the Preferred Shares originally issued. The interest rate swap transaction will be marked-to-market daily.

In addition, portfolio holdings as described above must be within the following diversification and issue size requirements in order to be included in Moody's Eligible Assets:

                                           MAXIMUM           MAXIMUM          MINIMUM
                          MAXIMUM           SINGLE            SINGLE         ISSUE SIZE
                           SINGLE         INDUSTRY(3)(4)   INDUSTRY(3)(4)     ($ IN
     RATINGS(1)         ISSUER(2)(3)      NON-UTILITY        UTILITY         MILLION)(5)
----------------------  ------------      --------------   --------------   ------------
Aaa................           100%              100%             100%             $100
Aa.................            20                60               30               100
A..................            10                40               25               100
Baa................             6                20               20               100
Ba.................             4                12               12                50(6)
B1--B2..............            3                 8                8                50(6)
B3 or below........             2                 5                5                50(6)


(1) Refers to the preferred stock and senior debt rating of the portfolio holding.
(2) Companies subject to common ownership of 25% or more are considered as one issuer.
(3) Percentages represent a portion of the aggregate Market Value of corporate debt securities.
(4) Industries are determined according to Moody's Industry Classifications, as defined herein.
(5) Except for preferred stock, which has a minimum issue size of $50 million.
(6) Portfolio holdings from issues ranging from $50 million to $100 million are limited to 20% of the Fund's total assets.

Where the Fund sells an asset and agrees to repurchase such asset in the future, the Discounted Value of such asset will constitute a Moody's Eligible Asset and the amount the Fund is required to pay upon repurchase of such asset will count as a liability for the purposes of the Preferred Shares Basic Maintenance Amount. Here the Fund purchases an asset and agrees to sell it to a third party in the future, cash receivable by the Fund thereby will constitute a Moody's Eligible Asset if the long-term debt of such other party is rated at least A2 by Moody's and such agreement has a term of 30 days or less; otherwise the Discounted Value of such purchased asset will constitute a Moody's Eligible Asset. For the purposes of calculation of Moody's Eligible Assets, portfolio securities which have been called for redemption by the issuer thereof shall be valued at the lower of Market Value or the call price of such portfolio securities.

Notwithstanding the foregoing, an asset will not be considered a Moody's Eligible Asset to the extent that it has been irrevocably deposited for the payment of (i)(A) through (i)(E) under the definition of Preferred Shares Basic Maintenance Amount or to the extent it is subject to any Liens including without limitation assets segregated under margin requirements of any outstanding financial contract, except for (A) Liens which are being contested in good faith by appropriate proceedings and which Moody's has indicated to the Fund will not affect the status of such asset as a Moody's Eligible Asset, (B) Liens for taxes that are not then due and payable or that can be paid thereafter without penalty, (C) Liens to secure payment for services rendered or cash advanced to the Fund by its investment manager or portfolio manager, the Fund's custodian, transfer agent or registrar or the Auction Agent and (D) Liens arising by virtue of any repurchase agreement.

Notwithstanding the foregoing limitations, assets not rated at least B3 by Moody's or B- by S&P or Fitch shall be considered to be Moody's Eligible Assets only to the extent the Market Value of such corporate debt securities does not exceed 10% of the aggregate Market Value of all Moody's Eligible Assets. Assets deemed eligible by Moody's will be issued by entities that (i) have not filed for bankruptcy within the past three years, (ii) are current on all principal and interest in their fixed income obligations, (iii) are current on all preferred stock dividends, and (iv) possess a current, unqualified auditor's report without qualified, explanatory language.

"Moody's Hedging Transactions" means purchases or sales of exchange-traded financial futures contracts based on any index approved by Moody's or Treasury Bonds, and purchases, writings or sales of exchange-traded put options on such financial futures contracts, any index approved by Moody's or Treasury Bonds, and purchases, writings or sales of exchange-traded call options on such financial futures contracts, any index approved by Moody's or Treasury Bonds, subject to the following limitations:

(i) the Fund will not engage in any Moody's Hedging Transaction based on any index approved by Moody's (other than Closing Transactions) that would cause the Fund at the time of such transaction to own or have sold:

(A) Outstanding financial futures contracts based on such index exceeding in number 10% of the average number of daily traded financial futures contracts based on such index in the 30 days preceding the time of effecting such transaction as reported by The Wall Street Journal; or

(B) Outstanding financial futures contracts based on any index approved by Moody's having a Market Value exceeding 50% of the Market Value of all portfolio securities of the Fund constituting Moody's Eligible Assets owned by the Fund;

(ii) The Fund will not engage in any Moody's Hedging Transaction based on Treasury Bonds (other than Closing Transactions) that would cause the Fund at the time of such transaction to own or have sold:

A-31

(A) Outstanding financial futures contracts based on Treasury Bonds with such contracts having an aggregate Market Value exceeding 20% of the aggregate Market Value of Moody's Eligible Assets owned by the Fund and rated Aa by Moody's (or, if not rated by Moody's but rated by S&P, rated AAA by S&P); or

(B) Outstanding financial futures contracts based on Treasury Bonds with such contracts having an aggregate Market Value exceeding 50% of the aggregate Market Value of all portfolio securities of the Fund constituting Moody's Eligible Assets owned by the Fund (other than Moody's Eligible Assets already subject to a Moody's Hedging Transaction) and rated Baa or A by Moody's (or, if not rated by Moody's but rated by S&P, rated A or AA by S&P);

(iii) The Fund will engage in Closing Transactions to close out any outstanding financial futures contract based on any index approved by Moody's if the amount of open interest in such index as reported by The Wall Street Journal is less than an amount to be mutually determined by Moody's and the Fund;

(iv) The Fund will engage in a Closing Transaction to close out any outstanding financial futures contract by no later than the fifth Business Day of the month in which such contract expires and will engage in a Closing Transaction to close out any outstanding option on a financial futures contract by no later than the first Business Day of the month in which such option expires;

(v) The Fund will engage in Moody's Hedging Transactions only with respect to financial futures contracts or options thereon having the next settlement date or the settlement date immediately thereafter;

(vi) The Fund (A) will not engage in options and futures transactions for leveraging or speculative purposes, except that an option or futures transaction shall not for these purposes be considered a leveraged position or speculative and (B) will not write any call options or sell any financial futures contracts for the purpose of hedging the anticipated purchase of an asset prior to completion of such purchase;

(vii) The Fund will not enter into an option or futures transaction unless, after giving effect thereto, the Fund would continue to have Moody's Eligible Assets with an aggregate Discounted Value equal to or greater than the Preferred Shares Basic Maintenance Amount; and

(viii) For purposes of valuation of Moody's Eligible Assets: (A) if the Fund writes a call option, the underlying asset will be valued as follows: (1) if the option is exchange-traded and may be offset readily or if the option expires before the earliest possible redemption of the Preferred Shares, at the lower of the Discounted Value of the underlying security of the option and the exercise price of the option or (2) otherwise, it has no value; (B) if the Fund writes a put option, the underlying asset will be valued as follows: the lesser of (1) exercise price and (2) the Discounted Value of the underlying security; and (C) call or put option contracts which the Fund buys have no value.

(b) "Moody's Industry Classifications" means, for the purposes of determining Moody's Eligible Assets, each of the following industry classifications (or such other classifications as Moody's may from time to time approve for application to the Preferred Shares).

1. Aerospace and Defense: Major Contractor, Subsystems, Research, Aircraft Manufacturing, Arms, Ammunition.

2. Automobile: Automobile Equipment, Auto-Manufacturing, Auto Parts Manufacturing, Personal Use Trailers, Motor Homes, Dealers.

3. Banking: Bank Holding, Savings and Loans, Consumer Credit, Small Loan, Agency, Factoring, Receivables.

A-32

4. Beverage, Food and Tobacco: Beer and Ale, Distillers, Wines and Liquors, Distributors, Soft Drink Syrup, Bottlers, Bakery, Mill Sugar, Canned Foods, Corn Refiners, Dairy Products, Meat Products, Poultry Products, Snacks, Packaged Foods, Distributors, Candy, Gum, Seafood, Frozen Food, Cigarettes, Cigars, Leaf/Snuff, Vegetable Oil.

5. Buildings and Real Estate: Brick, Cement, Climate Controls, Contracting, Engineering, Construction, Hardware, Forest Products (building-related only), Plumbing, Roofing, Wallboard, Real Estate, Real Estate Development, REITs, Land Development.

6. Chemicals, Plastics and Rubber: Chemicals (non-agricultural), Industrial Gases, Sulphur, Plastics, Plastic Products, Abrasives, Coatings, Paints, Varnish, Fabricating Containers.

7. Packaging and Glass: Glass, Fiberglass, Containers made of: Glass, Metal, Paper, Plastic, Wood or Fiberglass.

8. Personal and Non-Durable Consumer Products (Manufacturing Only): Soaps, Perfumes, Cosmetics, Toiletries, Cleaning Supplies, School Supplies.

9. Diversified/Conglomerate Manufacturing.

10. Diversified/Conglomerate Service.

11. Diversified Natural Resources, Precious Metals and Minerals: Fabricating, Distribution.

12. Ecological: Pollution Control, Waste Removal, Waste Treatment and Waste Disposal.

13. Electronics: Computer Hardware, Electric Equipment, Components, Controllers, Motors, Household Appliances, Information Service Communication Systems, Radios, TVs, Tape Machines, Speakers, Printers, Drivers, Technology.

14. Finance: Investment Brokerage, Leasing, Syndication, Securities.

15. Farming and Agriculture: Livestock, Grains, Produce, Agriculture Chemicals, Agricultural Equipment, Fertilizers.

16. Grocery: Grocery Stores, Convenience Food Stores.

17. Healthcare, Education and Childcare: Ethical Drugs, Proprietary Drugs, Research, Health Care Centers, Nursing Homes, HMOs, Hospitals, Hospital Supplies, Medical Equipment.

18. Home and Office Furnishings, Housewares, and Durable Consumer Products: Carpets, Floor Coverings, Furniture, Cooking, Ranges.

19. Hotels, Motels, Inns and Gaming.

20. Insurance: Life, Property and Casualty, Broker, Agent, Surety.

A-33

21. Leisure, Amusement, Motion Pictures, Entertainment:
Boating, Bowling, Billiards, Musical Instruments, Fishing, Photo Equipment, Records, Tapes, Sports, Outdoor Equipment (Camping), Tourism, Resorts, Games, Toy Manufacturing, Motion Picture Production Theaters, Motion Picture Distribution.

22. Machinery (Non-Agricultural, Non-Construction, Non-Electronic): Industrial, Machine Tools, Steam Generators.

23. Mining, Steel, Iron and Non-Precious Metals: Coal, Copper, Lead, Uranium, Zinc, Aluminum, Stainless Steel, Integrated Steel, Ore Production, Refractories, Steel Mill Machinery, Mini-Mills, Fabricating, Distribution and Sales of the foregoing.

24. Oil and Gas: Crude Producer, Retailer, Well Supply, Service and Drilling.

25. Printing, Publishing, and Broadcasting: Graphic Arts, Paper, Paper Products, Business Forms, Magazines, Books, Periodicals, Newspapers, Textbooks, Radio, T.V., Cable Broadcasting Equipment.

26. Cargo Transport: Rail, Shipping, Railroads, Rail-car Builders, Ship Builders, Containers, Container Builders, Parts, Overnight Mail, Trucking, Truck Manufacturing, Trailer Manufacturing, Air Cargo, Transport.

27. Retail Stores: Apparel, Toy, Variety, Drugs, Department, Mail Order Catalog, Showroom.

28. Telecommunications: Local, Long Distance, Independent, Telephone, Telegraph, Satellite, Equipment, Research, Cellular.

29. Textiles and Leather: Producer, Synthetic Fiber, Apparel Manufacturer, Leather Shoes.

30. Personal Transportation: Air, Bus, Rail, Car Rental.

31. Utilities: Electric, Water, Hydro Power, Gas.

32. Diversified Sovereigns: Semi-sovereigns, Canadian Provinces, Supra-national Agencies.

The Fund will use SIC codes in determining which industry classification is applicable to a particular investment in consultation with the Independent Accountant and Moody's, to the extent the Fund considers necessary.

"1933 Act" means the Securities Act of 1933, as amended.

"1940 Act" means the Investment Company Act of 1940, as amended.

"1940 Act Preferred Shares Asset Coverage" means asset coverage, as determined in accordance with Section 18(h) of the 1940 Act, of at least 200% with respect to all outstanding senior securities of the Trust which are stock, including all Outstanding Preferred Shares (or such other asset coverage as may in the future be specified in or under the 1940 Act as the minimum asset coverage for senior securities which are stock of a closed-end investment company as a condition of declaring dividends on its common shares),

A-34

determined on the basis of values calculated as of a time within 48 hours (not including Sundays or holidays) next preceding the time of such determination.

"1940 Act Preferred Shares Asset Coverage Certificate" means the certificate required to be delivered by the Trust pursuant to Section 12(e) of this Statement.

"Notice of Redemption" means any notice with respect to the redemption of Preferred Shares pursuant to Section 3 of Part I of this Statement.

"Order" has the meaning set forth in Section 2(a)(ii) of Part II of this Statement.

"Other Rating Agency" means any rating agency other than Fitch or Moody's then providing a rating for the Preferred Shares pursuant to the request of the Trust.

"Other Rating Agency Eligible Assets" means assets of the Trust designated by any Other Rating Agency as eligible for inclusion in calculating the discounted value of the Trust's assets in connection with such Other Rating Agency's rating of the Preferred Shares.

"Outstanding" means, as of any date, Preferred Shares theretofore issued by the Trust except, without duplication, (i) any Preferred Shares theretofore canceled, redeemed or repurchased by the Trust, or delivered to the Auction Agent for cancellation or with respect to which the Trust has given notice of redemption and irrevocably deposited with the Paying Agent sufficient funds to redeem such shares and (ii) any Preferred Shares represented by any certificate in lieu of which a new certificate has been executed and delivered by the Trust. Notwithstanding the foregoing, (A) for purposes of voting rights (including the determination of the number of shares required to constitute a quorum), any Preferred Shares as to which the Trust or any Affiliate is the Existing Holder will be disregarded and not deemed Outstanding; (B) in connection with any Auction, any Preferred Shares as to which the Trust or any person known to the Auction Agent to be an Affiliate is the Existing Holder will be disregarded and not deemed Outstanding; and (C) for purposes of determining the Preferred Shares Basic Maintenance Amount, Preferred Shares held by the Trust will be disregarded and not deemed Outstanding, but shares held by any Affiliate will be deemed Outstanding.

"Paying Agent" means The Bank of New York unless and until another entity appointed by a resolution of the Board of Trustees enters into an agreement with the Trust to serve as paying agent, which paying agent may be the same as the Auction Agent.

"Person" or "Persons" means and includes an individual, a partnership, the Trust, a trust, a corporation, a limited liability company, an unincorporated association, a joint venture or other entity or a government or any agency or political subdivision thereof.

"Potential Beneficial Owner" or "Potential Beneficial Holder" has the meaning set forth in Section 1 of Part II of this Statement.

"Preferred Shares" has the meaning set forth in paragraph FIRST of Part I of this Statement.

"Preferred Shares Basic Maintenance Amount" means as of any Valuation Date as the dollar amount equal to the sum of:

(i) (A) the sum of the products resulting from multiplying the number of Outstanding Preferred Shares on such date by the Liquidation Preference (and redemption premium, if any) per share; (B) the aggregate amount of dividends that will have accumulated at the Applicable Rate (whether or not earned or declared) for each Outstanding Preferred Shares to the 30th day after such Valuation Date;
(C) the amount of anticipated Trust non-interest expenses for the 90 days subsequent to such Valuation Date; (D) the amount of the current outstanding balances of any indebtedness which is senior to the Preferred Shares plus interest actually accrued together with 30 days

A-35

additional interest on the current outstanding balances calculated at the current rate; and (E) any other current liabilities payable during the 30 days subsequent to such Valuation Date, including, without limitation, indebtedness due within one year and any redemption premium due with respect to Preferred Shares for which a Notice of Redemption has been given, as of such Valuation Date, to the extent not reflected in any of (i)(A) through (i)(D): less

(ii) the sum of any cash plus the value of any of the Trust's assets irrevocably deposited by the Trust for the payment of any (i)(B) through (i)(E) ("value," for purposes of this clause (ii), means the Discounted Value of the security, except that if the security matures prior to the relevant redemption payment date and is either fully guaranteed by the U.S. Government or is rated at least P-1 by Moody's and A-1 by S&P, it will be valued at its face value).

"Preferred Shares Basic Maintenance Amount Test" means a test which is met if the lower of the aggregate Discounted Values of the Moody's Eligible Assets or the Fitch Eligible Assets meets or exceeds the Preferred Shares Basic Maintenance Amount.

"Preferred Shares Basic Maintenance Certificate" has the meaning set forth in Section 12(d) of Part I of this Statement.

"Rating Agency" means Moody's and Fitch, as long as such rating agency is then rating the Preferred Shares and any Other Rating Agency then rating the Preferred Shares.

"Redemption Date" has the meaning set forth in Section 2(c)(ii) of Part II of this Statement.

"Redemption Default" has the meaning set forth in Section 2(c)(ii) of

Part I of this Statement.

"Redemption Price" has the meaning set forth in Section 3(a)(i) of Part I of this Statement.

"Reference Rate" means, with respect to the determination of the Default Rate, the applicable "AA" Financial Commercial Paper Rate (for a Dividend Period of fewer than 184 days) or the applicable Treasury Index Rate (for a Dividend Period of 184 days or more).

"Registrar" means The Bank of New York, unless and until another entity appointed by a resolution of the Board of Trustees enters into an agreement with the Trust to serve as transfer agent.

"S&P" means Standard & Poor's, a division of The McGraw-Hill Companies, Inc., or its successors at law.

"Securities Depository" means The Depository Trust Company and its successors and assigns or any successor securities depository selected by the Trust that agrees to follow the procedures required to be followed by such securities depository in connection with the Preferred Shares.

"Sell Order" has the meaning set forth in Section 2(b) of Part II of this Statement.

"Short-Term Money Market Instrument" means the following types of instruments if, on the date of purchase or other acquisition thereof by the Trust, the remaining term to maturity thereof is not in excess of 180 days:

(i) commercial paper rated A-1 if such commercial paper matures in 30 days or A-1+ if such commercial paper matures in over 30 days;

A-36

(ii) demand or time deposits in, and banker's acceptances and certificates of deposit of (A) a depository institution or trust company incorporated under the laws of the United States of America or any state thereof or the District of Columbia or (B) a United States branch office or agency of a foreign depository institution (provided that such branch office or agency is subject to banking regulation under the laws of the United States, any state thereof or the District of Columbia);

(iii) overnight funds; and

(iv) U.S. Government Securities.

"Special Dividend Period" means a Dividend Period that is not a Standard Dividend Period.

"Specific Redemption Provisions" means, with respect to any Special Dividend Period of more than one year, either, or any combination of (i) a period (a "Non-Call Period") determined by the Board of Trustees after consultation with the Broker-Dealers, during which the shares subject to such Special Dividend Period are not subject to redemption at the option of the Trust, and (ii) a period (a "Premium Call Period"), consisting of a number of whole years, as determined by the Board of Trustees after consultation with the Broker-Dealers, during each year of which the shares subject to such Special Dividend Period will be redeemable at the Trust's option at a price per share equal to the Liquidation Preference plus accumulated but unpaid dividends (whether or not earned or declared) plus a premium expressed as a percentage or percentages of the Liquidation Preference or expressed as a formula using specified variables as determined by the Board of Trustees after consultation with the Broker-Dealers.

"Standard Dividend Period" means a Dividend Period of _____ days in the case of Series M, TU, W, TH, and F Preferred Shares and __ days in the case of Series A Preferred Shares unless such _______ day or ____ day is not a Business Day, then the number of days ending on the Business Day next Business Day following such _______ day or ____ day.

"Submission Deadline" means 1:00 p.m., New York City time, on any Auction Date or such other time on any Auction Date by which Broker-Dealers are required to submit Orders to the Auction Agent as specified by the Auction Agent from time to time.

"Transfer Agent" means The Bank of New York, unless and until another entity appointed by a resolution of the Board of Trustees enters into an agreement with the Trust to serve as Transfer Agent.

"Treasury Index Rate" means the average yield to maturity for actively traded marketable U.S. Treasury fixed interest rate securities having the same number of 30-day periods to maturity as the length of the applicable Dividend Period, determined, to the extent necessary, by linear interpolation based upon the yield for such securities having the next shorter and next longer number of 30-day periods to maturity treating all Dividend Periods with a length greater than the longest maturity for such securities as having a length equal to such longest maturity, in all cases based upon data set forth in the most recent weekly statistical release published by the Board of Governors of the Federal Reserve System (currently in H.15 (519)); provided, however, if the most recent such statistical release shall not have been published during the 15 days preceding the date of computation, the foregoing computations shall be based upon the average of comparable data as quoted to the Trust by at least three recognized dealers in U.S. Government Securities selected by the Trust.

"U.S. Government Securities" means direct obligations of the United States or of its agencies or instrumentalities that are entitled to the full faith and credit of the United States and that, other than United States Treasury Bills, provide for the periodic payment of interest and the full payment of principal at maturity or call for redemption.

A-37

"Valuation Date" means the last Business Day of each week, or such other date as to which the Trust and Rating Agencies may agree for purposes of determining the Preferred Shares Basic Maintenance Amount.

"Voting Period" has the meaning set forth in Section 6(b) of Part I of this Statement.

"Winning Bid Rate" has the meaning set forth in Section 4(a)(iii) of

Part II of this Statement.

18. Interpretation. References to sections, subsections, clauses, sub-clauses, paragraphs and subparagraphs are to such sections, subsections, clauses, sub-clauses, paragraphs and subparagraphs contained in this Part I or Part II hereof, as the case may be, unless specifically identified otherwise.

A-38

PART II: AUCTION PROCEDURES

1. Certain Definitions. As used in Part II of this Statement, the following terms shall have the following meanings, unless the context otherwise requires and all section references below are to Part II of this Statement except as otherwise indicated. Capitalized terms not defined in Section 1 of Part II of this Statement shall have the respective meanings specified in Part I of this Statement.

"Agent Member" means a member of or participant in the Securities Depository that will act on behalf of existing or potential holders of Preferred Shares.

"Available Preferred Shares" has the meaning set forth in Section 4(a)(i) of Part II of this Statement.

"Existing Holder" with respect to shares of a series of Preferred Shares means a Broker-Dealer (or any such other Person as may be permitted by the Trust) that is listed on the records of the Auction Agent as a holder of such series.

"Hold Order" has the meaning set forth in Section 2(a) of Part II of this Statement.

"Order" has the meaning set forth in Section 2(a) of Part II of this Statement.

"Potential Beneficial Holder" or "Potential Beneficial Owner" means (a) any Existing Holder who may be interested in acquiring additional Preferred Shares, or (b) any other person who may be interested in acquiring Preferred Shares or whose shares will be listed under such person's Broker-Dealer's name on the records of the Auction Agent.

"Sell Order" has the meaning set forth in Section 2(a) of Part II of this Statement.

"Submitted Bid Order" has the meaning set forth in Section 4(a) of Part II of this Statement.

"Submitted Hold Order" has the meaning set forth in Section 4(a) of

Part II of this Statement.

"Submitted Order" has the meaning set forth in Section 4(a) of Part II of this Statement.

"Submitted Sell Order" has the meaning set forth in Section 4(a) of

Part II of this Statement.

"Sufficient Clearing Orders" means that all Preferred Shares are the subject of Submitted Hold Orders or that the number of Preferred Shares that are the subject of Submitted Buy Orders by Potential Holders specifying one or more rates equal to or less than the Maximum Rate exceeds or equals the sum of (A) the number of Preferred Shares that are subject of Submitted Hold/Sell Orders by Existing Holders specifying one or more rates higher than the Maximum Rate and (B) the number of Preferred Shares that are subject to Submitted Sell Orders.

"Winning Bid Rate" means the lowest rate specified in the Submitted Orders which, if (A) each Submitted Hold/Sell Order from Existing Holders specifying such lowest rate and all other Submitted Hold/Sell Orders from Existing Holders specifying lower rates were accepted and (B) each Submitted Buy Order from Potential Holders specifying such lowest rate and all other Submitted Buy Orders from Potential Holders specifying lower rates were accepted, would result in the Existing Holders described in clause (A) above continuing to hold an aggregate number of Preferred Shares which, when added to the number of Preferred Shares to be purchased by the Potential Holders described in clause (B) above and the number of Preferred Shares subject to Submitted Hold Orders, would be equal to the number of Preferred Shares.

2. Orders.

(a) On or prior to the Submission Deadline on each Auction Date for shares of a Series of Preferred Shares:

A-39

(i) each Beneficial Owner of shares of such Series may submit to its Broker-Dealer by telephone or otherwise information as to:

(A) the number of Outstanding shares, if any, of such Series held by such Beneficial Owner which such Beneficial Owner desires to continue to hold without regard to the Applicable Rate for shares of such Series for the next succeeding Dividend Period of such shares;

(B) the number of Outstanding shares, if any, of such Series held by such Beneficial Owner which such Beneficial Owner offers to sell if the Applicable Rate for shares of such Series for the next succeeding Dividend Period of shares of such Series shall be less than the rate per annum specified by such Beneficial Owner; and/or

(C) the number of Outstanding shares, if any, of such Series held by such Beneficial Owner which such Beneficial Owner offers to sell without regard to the Applicable Rate for shares of such Series for the next succeeding Dividend Period of shares of such series; and

(ii) each Broker-Dealer, using lists of Potential Beneficial Owners, shall in good faith for the purpose of conducting a competitive Auction in a commercially reasonable manner, contact Potential Beneficial Owners (by telephone or otherwise), including Persons that are not Beneficial Owners, on such lists to determine the number of shares, if any, of such Series which each such Potential Beneficial Owner offers to purchase if the Applicable Rate for shares of such Series for the next succeeding Dividend Period of shares of such Series shall not be less than the rate per annum specified by such Potential Beneficial Owner.

For the purposes hereof, the communication by a Beneficial Owner or Potential Beneficial Owner to a Broker-Dealer, or by a Broker-Dealer to the Auction Agent, of information referred to in clause (i)(A), (i)(B), (i)(C) or (ii) of this paragraph (a) is hereinafter referred to as an "Order" and collectively as "Orders" and each Beneficial Owner and each Potential Beneficial Owner placing an Order with a Broker-Dealer, and such Broker-Dealer placing an Order with the Auction Agent, is hereinafter referred to as a "Bidder" and collectively as "Bidders"; an Order containing the information referred to in clause (i)(A) of this paragraph (a) is hereinafter referred to as a "Hold Order" and collectively as "Hold Orders"; an Order containing the information referred to in clause
(i)(B) or (ii) of this paragraph (a) is hereinafter referred to as a "Bid" and collectively as "Bids"; and an Order containing the information referred to in clause (i)(C) of this paragraph (a) is hereinafter referred to as a "Sell Order" and collectively as "Sell Orders."

(b) (i) A Bid by a Beneficial Owner or an Existing Holder of shares of a Series of Preferred Shares subject to an Auction on any Auction Date shall constitute an irrevocable offer to sell:

(A) the number of Outstanding shares of such Series specified in such Bid if the Applicable Rate for shares of such Series determined on such Auction Date shall be less than the rate specified therein;

(B) such number or a lesser number of Outstanding shares of such Series to be determined as set forth in clause (iv) of paragraph (a) of Section 5 of this Part II if the Applicable Rate for shares of such Series determined on such Auction Date shall be equal to the rate specified therein; or

A-40

(C) the number of Outstanding shares of such Series specified in such Bid if the rate specified therein shall be higher than the Maximum Rate for shares of such series, or such number or a lesser number of Outstanding shares of such Series to be determined as set forth in clause (iii) of paragraph (b) of Section 5 of this Part II if the rate specified therein shall be higher than the Maximum Rate for shares of such Series and Sufficient Clearing Bids for shares of such Series do not exist.

(ii) A Sell Order by a Beneficial Owner or an Existing Holder of shares of a Series of Preferred Shares subject to an Auction on any Auction Date shall constitute an irrevocable offer to sell:

(A) the number of Outstanding shares of such Series specified in such Sell Order; or

(B) such number or a lesser number of Outstanding shares of such series as set forth in clause (iii) of paragraph (b) of Section 5 of this Part II if Sufficient Clearing Bids for shares of such Series do not exist;

provided, however, that a Broker-Dealer that is an Existing Holder with respect to shares of a Series of Preferred Shares shall not be liable to any Person for failing to sell such shares pursuant to a Sell Order described in the proviso to paragraph (c) of Section 3 of this Part II if (1) such shares were transferred by the Beneficial Owner thereof without compliance by such Beneficial Owner or its transferee Broker-Dealer (or other transferee person, if permitted by the Trust) with the provisions of Section 6 of this Part II or (2) such Broker-Dealer has informed the Auction Agent pursuant to the terms of its Broker-Dealer Agreement that, according to such Broker-Dealer's records, such Broker-Dealer believes it is not the Existing Holder of such shares.

(iii) A Bid by a Potential Holder of shares of a Series of Preferred Shares subject to an Auction on any Auction Date shall constitute an irrevocable offer to purchase:

(A) the number of Outstanding shares of such Series specified in such Bid if the Applicable Rate for shares of such Series determined on such Auction Date shall be higher than the rate specified therein; or (B) such number or a lesser number of Outstanding shares of such Series as set forth in clause (v) of paragraph (a) of Section 5 of this Part II if the Applicable Rate for shares of such Series determined on such Auction Date shall be equal to the rate specified therein.

(d) No Order for any number of Preferred Shares other than whole shares shall be valid.

3. Submission of Orders by Broker-Dealers to Auction Agent.

(a) Each Broker-Dealer shall submit in writing to the Auction Agent prior to the Submission Deadline on each Auction Date all Orders for Preferred Shares of a Series subject to an Auction on such Auction Date obtained by such Broker-Dealer, designating itself (unless otherwise permitted by the Trust) as an Existing Holder in respect of shares subject to Orders submitted or deemed submitted to it by Beneficial Owners and as a Potential Holder in respect of shares subject to Orders submitted to it by Potential Beneficial Owners, and shall specify with respect to each Order for such shares:

(i) the name of the Bidder placing such Order (which shall be the Broker-Dealer unless otherwise permitted by the Trust);

A-41

(ii) the aggregate number of shares of such Series that are the subject of such Order;

(iii) to the extent that such Bidder is an Existing Holder of shares of such series:

(A) the number of shares, if any, of such Series subject to any Hold Order of such Existing Holder;

(B) the number of shares, if any, of such Series subject to any Bid of such Existing Holder and the rate specified in such Bid; and

(C) the number of shares, if any, of such Series subject to any Sell Order of such Existing Holder; and

(D) to the extent such Bidder is a Potential Holder of shares of such series, the rate and number of shares of such Series specified in such Potential Holder's Bid.

(b) If any rate specified in any Bid contains more than three figures to the right of the decimal point, the Auction Agent shall round such rate up to the next highest one thousandth (.001) of 1%.

(c) If an Order or Orders covering all of the Outstanding Preferred Shares of a Series held by any Existing Holder is not submitted to the Auction Agent prior to the Submission Deadline, the Auction Agent shall deem a Hold Order to have been submitted by or on behalf of such Existing Holder covering the number of Outstanding shares of such Series held by such Existing Holder and not subject to Orders submitted to the Auction Agent; provided, however, that if an Order or Orders covering all of the Outstanding shares of such Series held by any Existing Holder is not submitted to the Auction Agent prior to the Submission Deadline for an Auction relating to a Special Dividend Period consisting of more than 91 Dividend Period days, the Auction Agent shall deem a Sell Order to have been submitted by or on behalf of such Existing Holder covering the number of Outstanding shares of such Series held by such Existing Holder and not subject to Orders submitted to the Auction Agent.

(d) If one or more Orders of an Existing Holder is submitted to the Auction Agent covering in the aggregate more than the number of Outstanding Preferred Shares of a Series subject to an Auction held by such Existing Holder, such Orders shall be considered valid in the following order of priority:

(i) all Hold Orders for shares of such Series shall be considered valid, but only up to and including in the aggregate the number of Outstanding shares of such Series held by such Existing Holder, and if the number of shares of such Series subject to such Hold Orders exceeds the number of Outstanding shares of such Series held by such Existing Holder, the number of shares subject to each such Hold Order shall be reduced pro rata to cover the number of Outstanding shares of such Series held by such Existing Holder;

(ii) (A) any Bid for shares of such Series shall be considered valid up to and including the excess of the number of Outstanding shares of such Series held by such Existing Holder over the number of shares of such series subject to any Hold Orders referred to in clause (i) above;

A-42

(B) subject to subclause (A), if more than one Bid of an Existing Holder for shares of such Series is submitted to the Auction Agent with the same rate and the number of Outstanding shares of such Series subject to such Bids is greater than such excess, such Bids shall be considered valid up to and including the amount of such excess, and the number of shares of such Series subject to each Bid with the same rate shall be reduced pro rata to cover the number of shares of such Series equal to such excess;

(C) subject to subclauses (A) and (B), if more than one Bid of an Existing Holder for shares of such Series is submitted to the Auction Agent with different rates, such Bids shall be considered valid in the ascending order of their respective rates up to and including the amount of such excess; and

(D) in any such event, the number, if any, of such Outstanding shares of such Series subject to any portion of Bids considered not valid in whole or in part under this clause
(ii) shall be treated as the subject of a Bid for shares of such Series by or on behalf of a Potential Holder at the rate therein specified; and

(iii) all Sell Orders for shares of such Series shall be considered valid up to and including the excess of the number of Outstanding shares of such Series held by such Existing Holder over the sum of shares of such Series subject to valid Hold Orders referred to in clause (i) above and valid Bids referred to in clause (ii) above.

(e) If more than one Bid for one or more shares of a Series of Preferred Shares is submitted to the Auction Agent by or on behalf of any Potential Holder, each such Bid submitted shall be a separate Bid with the rate and number of shares therein specified.

(f) Any Order submitted by a Beneficial Owner or a Potential Beneficial Owner to its Broker-Dealer, or by a Broker-Dealer to the Auction Agent, prior to the Submission Deadline on any Auction Date, shall be irrevocable.

4. Determination of Sufficient Clearing Bids, Winning Bid Rate and Applicable Rate.

(a) Not earlier than the Submission Deadline on each Auction Date for shares of a Series of Preferred Shares, the Auction Agent shall assemble all valid Orders submitted or deemed submitted to it by the Broker-Dealers in respect of shares of such Series (each such Order as submitted or deemed submitted by a Broker-Dealer being hereinafter referred to individually as a "Submitted Hold Order," a "Submitted Bid" or a "Submitted Sell Order," as the case may be, or as a "Submitted Order" and collectively as "Submitted Hold Orders," "Submitted Bids" or "Submitted Sell Orders," as the case may be, or as "Submitted Orders") and shall determine for such series:

(i) the excess of the number of Outstanding shares of such Series over the number of Outstanding shares of such Series subject to Submitted Hold Orders (such excess being hereinafter referred to as the "Available Preferred Shares" of such series);

(ii) from the Submitted Orders for shares of such Series whether:

(A) the number of Outstanding shares of such Series subject to Submitted Bids of Potential Holders specifying one or more rates equal to or lower than the Maximum Rate (for all Dividend Periods) for shares of such series;

A-43

exceeds or is equal to the sum of

(B) the number of Outstanding shares of such Series subject to Submitted Bids of Existing Holders specifying one or more rates higher than the Maximum Rate (for all Dividend Periods) for shares of such Series; and

(C) the number of Outstanding shares of such Series subject to Submitted Sell Orders

(in the event such excess or such equality exists (other than because the number of shares of such Series in subclauses (B) and (C) above is zero because all of the Outstanding shares of such Series are subject to Submitted Hold Orders), such Submitted Bids in subclause (A) above being hereinafter referred to collectively as "Sufficient Clearing Bids" for shares of such series); and

(iii) if Sufficient Clearing Bids for shares of such Series exist, the lowest rate specified in such Submitted Bids (the "Winning Bid Rate" for shares of such series) which if:

(A) (I) each such Submitted Bid of Existing Holders specifying such lowest rate and (II) all other such Submitted Bids of Existing Holders specifying lower rates were rejected, thus entitling such Existing Holders to continue to hold the shares of such Series that are subject to such Submitted Bids; and

(B) (I) each such Submitted Bid of Potential Holders specifying such lowest rate and (II) all other such Submitted Bids of Potential Holders specifying lower rates were accepted;

would result in such Existing Holders described in subclause (A) above continuing to hold an aggregate number of Outstanding shares of such Series which, when added to the number of Outstanding shares of such Series to be purchased by such Potential Holders described in subclause (B) above, would equal not less than the Available Preferred Shares of such series.

(b) Promptly after the Auction Agent has made the determinations pursuant to paragraph (a) of this Section 4, the Auction Agent shall advise the Trust of the Maximum Rate for shares of the Series of Preferred Shares for which an Auction is being held on the Auction Date and, based on such determination, the Applicable Rate for shares of such Series for the next succeeding Dividend Period thereof as follows:

(i) if Sufficient Clearing Bids for shares of such Series exist, that the Applicable Rate for all shares of such Series for the next succeeding Dividend Period thereof shall be equal to the Winning Bid Rate for shares of such Series so determined;

(ii) if Sufficient Clearing Bids for shares of such Series do not exist (other than because all of the Outstanding shares of such Series are subject to Submitted Hold Orders), that the Applicable Rate for all shares of such Series for the next succeeding Dividend Period thereof shall be equal to the Maximum Rate for shares of such series; or

(iii) if all of the Outstanding shares of such Series are subject to Submitted Hold Orders, that the Applicable Rate for all shares of such Series for the next succeeding Dividend Period thereof shall be the All Hold Rate.

5. Acceptance and Rejection of Submitted Bids and Submitted Sell Orders and Allocation. Existing Holders shall continue to hold the Preferred Shares that are subject to Submitted Hold Orders, and, based

A-44

on the determinations made pursuant to paragraph (a) of Section 4 of this Part II, the Submitted Bids and Submitted Sell Orders shall be accepted or rejected by the Auction Agent and the Auction Agent shall take such other action as set forth below:

(a) If Sufficient Clearing Bids for shares of a Series of Preferred Shares have been made, all Submitted Sell Orders with respect to shares of such Series shall be accepted and, subject to the provisions of paragraphs (d) and
(e) of this Section 5, Submitted Bids with respect to shares of such Series shall be accepted or rejected as follows in the following order of priority and all other Submitted Bids with respect to shares of such Series shall be rejected:

(i) Existing Holders' Submitted Bids for shares of such series specifying any rate that is higher than the Winning Bid Rate for shares of such Series shall be accepted, thus requiring each such Existing Holder to sell the Preferred Shares subject to such Submitted Bids;

(ii) Existing Holders' Submitted Bids for shares of such series specifying any rate that is lower than the Winning Bid Rate for shares of such Series shall be rejected, thus entitling each such Existing Holder to continue to hold the Preferred Shares subject to such Submitted Bids;

(iii) Potential Holders' Submitted Bids for shares of such series specifying any rate that is lower than the Winning Bid Rate for shares of such Series shall be accepted;

(iv) each Existing Holder's Submitted Bid for shares of such series specifying a rate that is equal to the Winning Bid Rate for shares of such Series shall be rejected, thus entitling such Existing Holder to continue to hold the Preferred Shares subject to such Submitted Bid, unless the number of Outstanding Preferred Shares subject to all such Submitted Bids shall be greater than the number of Preferred Shares ("remaining shares") in the excess of the Available Preferred Shares of such Series over the number of Preferred Shares subject to Submitted Bids described in clauses (ii) and (iii) of this paragraph (a), in which event such Submitted Bid of such Existing Holder shall be rejected in part, and such Existing Holder shall be entitled to continue to hold Preferred Shares subject to such Submitted Bid, but only in an amount equal to the Preferred Shares of such Series obtained by multiplying the number of remaining shares by a fraction, the numerator of which shall be the number of Outstanding Preferred Shares held by such Existing Holder subject to such Submitted Bid and the denominator of which shall be the aggregate number of Outstanding Preferred Shares subject to such Submitted Bids made by all such Existing Holders that specified a rate equal to the Winning Bid Rate for shares of such series; and

(v) each Potential Holder's Submitted Bid for shares of such series specifying a rate that is equal to the Winning Bid Rate for shares of such Series shall be accepted but only in an amount equal to the number of shares of such Series obtained by multiplying the number of shares in the excess of the Available Preferred Shares of such Series over the number of Preferred Shares subject to Submitted Bids described in clauses (ii) through (iv) of this paragraph (a) by a fraction, the numerator of which shall be the number of Outstanding Preferred Shares subject to such Submitted Bid and the denominator of which shall be the aggregate number of Outstanding Preferred Shares subject to such Submitted Bids made by all such Potential Holders that specified a rate equal to the Winning Bid Rate for shares of such series.

(b) If Sufficient Clearing Bids for shares of a Series of Preferred Shares have not been made (other than because all of the Outstanding shares of such series are subject to Submitted Hold Orders), subject to the provisions of paragraph (d) of this Section 5, Submitted Orders for shares of such series shall be accepted or rejected as follows in the following order of priority and all other Submitted Bids for shares of such Series shall be rejected:

A-45

(i) Existing Holders' Submitted Bids for shares of such series specifying any rate that is equal to or lower than the Maximum Rate for shares of such Series shall be rejected, thus entitling such Existing Holders to continue to hold the Preferred Shares subject to such Submitted Bids;

(ii) Potential Holders' Submitted Bids for shares of such series specifying any rate that is equal to or lower than the Maximum Rate for shares of such Series shall be accepted; and

(iii) each Existing Holder's Submitted Bid for shares of such series specifying any rate that is higher than the Maximum Rate for shares of such Series and the Submitted Sell Orders for shares of such Series of each Existing Holder shall be accepted, thus entitling each Existing Holder that submitted or on whose behalf was submitted any such Submitted Bid or Submitted Sell Order to sell the shares of such Series subject to such Submitted Bid or Submitted Sell Order, but in both cases only in an amount equal to the number of shares of such Series obtained by multiplying the number of shares of such Series subject to Submitted Bids described in clause (ii) of this paragraph
(b) by a fraction, the numerator of which shall be the number of Outstanding shares of such Series held by such Existing Holder subject to such Submitted Bid or Submitted Sell Order and the denominator of which shall be the aggregate number of Outstanding shares of such Series subject to all such Submitted Bids and Submitted Sell Orders.

(c) If all of the Outstanding shares of a Series of Preferred Shares are subject to Submitted Hold Orders, all Submitted Bids for shares of such Series shall be rejected.

(d) If, as a result of the procedures described in clause (iv) or (v) of paragraph (a) or clause (iii) of paragraph (b) of this Section 5, any Existing Holder would be entitled or required to sell, or any Potential Holder would be entitled or required to purchase, a fraction of a share of a Series of Preferred Shares on any Auction Date, the Auction Agent shall, in such manner as it shall determine in its sole discretion, round up or down the number of Preferred Shares of such Series to be purchased or sold by any Existing Holder or Potential Holder on such Auction Date as a result of such procedures so that the number of shares so purchased or sold by each Existing Holder or Potential Holder on such Auction Date shall be whole shares of a Series of Preferred Shares.

(e) If, as a result of the procedures described in clause (v) of paragraph (a) of this Section 5 any Potential Holder would be entitled or required to purchase less than a whole share of a Series of Preferred Shares on any Auction Date, the Auction Agent shall, in such manner as it shall determine in its sole discretion, allocate Preferred Shares of such Series for purchase among Potential Holders so that only whole Preferred Shares of such Series are purchased on such Auction Date as a result of such procedures by any Potential Holder, even if such allocation results in one or more Potential Holders not purchasing Preferred Shares of such Series on such Auction Date.

(f) Based on the results of each Auction for shares of a Series of Preferred Shares, the Auction Agent shall determine the aggregate number of shares of such Series to be purchased and the aggregate number of shares of such Series to be sold by Potential Holders and Existing Holders and, with respect to each Potential Holder and Existing Holder, to the extent that such aggregate number of shares to be purchased and such aggregate number of shares to be sold differ, determine to which other Potential Holder(s) or Existing Holder(s) they shall deliver, or from which other Potential Holder(s) or Existing Holder(s) they shall receive, as the case may be, Preferred Shares of such series. Notwithstanding any provision of the Auction Procedures or the Settlement Procedures to the contrary, in the event an Existing Holder or Beneficial Owner of shares of a Series of Preferred Shares with respect to whom a Broker-Dealer submitted a Bid

A-46

to the Auction Agent for such shares that was accepted in whole or in part, or submitted or is deemed to have submitted a Sell Order for such shares that was accepted in whole or in part, fails to instruct its Agent Member to deliver such shares against payment therefor, partial deliveries of Preferred Shares that have been made in respect of Potential Holders' or Potential Beneficial Owners' Submitted Bids for shares of such Series that have been accepted in whole or in part shall constitute good delivery to such Potential Holders and Potential Beneficial Owners.

(g) Neither the Trust nor the Auction Agent nor any affiliate of either shall have any responsibility or liability with respect to the failure of an Existing Holder, a Potential Holder, a Beneficial Owner, a Potential Beneficial Owner or its respective Agent Member to deliver Preferred Shares of any Series or to pay for Preferred Shares of any Series sold or purchased pursuant to the Auction Procedures or otherwise.

6. Transfer of Preferred Shares. Unless otherwise permitted by the Trust, a Beneficial Owner or an Existing Holder may sell, transfer or otherwise dispose of Preferred Shares only in whole shares and only pursuant to a Bid or Sell Order placed with the Auction Agent in accordance with the procedures described in this Part II or to a Broker-Dealer; provided, however, that (a) a sale, transfer or other disposition of Preferred Shares from a customer of a Broker-Dealer who is listed on the records of that Broker-Dealer as the holder of such shares to that Broker-Dealer or another customer of that Broker-Dealer shall not be deemed to be a sale, transfer or other disposition for purposes of this Section 6 if such Broker-Dealer remains the Existing Holder of the shares so sold, transferred or disposed of immediately after such sale, transfer or disposition and (b) in the case of all transfers other than pursuant to Auctions, the Broker-Dealer (or other Person, if permitted by the Trust) to whom such transfer is made shall advise the Auction Agent of such transfer.

[Remainder of page left blank]

A-47

IN WITNESS WHEREOF, CALAMOS CONVERTIBLE AND HIGH INCOME FUND has caused these presents to be signed in its name and on its behalf by its _____________ and witnessed by its ____________________ as of this __ day of _____________, 2003.

CALAMOS CONVERTIBLE AND HIGH
INCOME FUND

By: _____________________________
Name:
Title:

WITNESS:

By: _____________________________________ Name:
Title:

A-48

APPENDIX B -- DESCRIPTION OF RATINGS(1)

MOODY'S PRIME RATING SYSTEM

Moody's short-term ratings are opinions of the ability of issuers to honor senior financial obligations and contracts. Such obligations generally have an original maturity not exceeding one year, unless explicitly noted.

Moody's employs the following designations, all judged to be investment grade, to indicate the relative repayment ability of rated issuers:

PRIME-1: Issuers rated Prime-1 (or supporting institutions) have a superior ability for repayment of senior short-term debt obligations. Prime-1 repayment ability will often be evidenced by many of the following characteristics:

Leading market positions in well-established industries. High rates of return on funds employed. Conservative capitalization structure with moderate reliance on debt and ample asset protection. Broad margins in earnings coverage of fixed financial charges and high internal cash generation. Well-established access to a range of financial markets and assured sources of alternate liquidity.

PRIME-2: Issuers (or supporting institutions) rated Prime-2 have a strong ability to repay senior short-term debt obligations. This will normally be evidenced by many of the characteristics cited above, but to a lesser degree. Earnings trends and coverage ratios, while sound, may be more subject to variation than is the case for Prime-1 securities. Capitalization characteristics, while still appropriate, may be more affected by external conditions. Ample alternate liquidity is maintained.

PRIME-3: Issuers (or supporting institutions) rated Prime-3 have an acceptable ability for repayment of senior short-term obligations. The effect of industry characteristics and market compositions may be more pronounced. Variability in earnings and profitability may result in changes in the level of debt-protection measurements and may require relatively high financial leverage. Adequate alternate liquidity is maintained.

NOT PRIME: Issuers rated Not Prime do not fall within any of the Prime rating categories.

In addition, in certain countries the prime rating may be modified by the issuer's or guarantor's senior unsecured long-term debt rating.

MOODY'S DEBT RATINGS

Aaa: Bonds and preferred stock which are rated Aaa are judged to be of the best quality. They carry the smallest degree of investment risk and are generally referred to as "gilt edged." Interest payments are protected by a large or by an exceptionally stable margin and principal is secure. While the various protective elements are likely to change, such changes as can be visualized are most unlikely to impair the fundamentally strong position of such issues.

Aa: Bonds and preferred stock which are rated Aa are judged to be of high quality by all standards. Together with the Aaa group they comprise what are generally known as high-grade bonds.


(1) The ratings indicated herein are believed to be the most recent ratings available at the date of this prospectus for the securities listed. Ratings are generally given to securities at the time of issuance. While the rating agencies may from time to time revise such ratings, they undertake no obligation to do so, and the ratings indicated do not necessarily represent ratings which will be given to these securities on the date of the fund's fiscal year-end.

B-1

They are rated lower than the best bonds because margins of protection may not be as large as in Aaa securities or fluctuation of protective elements may be of greater amplitude or there may be other elements present which make the long-term risk in Aa-rated securities appear somewhat larger than those securities rated Aaa.

A: Bonds and preferred stock which are rated A possess many favorable investment attributes and are to be considered as upper-medium-grade obligations. Factors giving security to principal and interest are considered adequate, but elements may be present which suggest a susceptibility to impairment some time in the future.

Baa: Bonds and preferred stock which are rated Baa are considered as medium-grade obligations (i.e., they are neither highly protected nor poorly secured). Interest payments and principal security appear adequate for the present but certain protective elements may be lacking or may be characteristically unreliable over any great length of time. Such bonds lack outstanding investment characteristics and in fact have speculative characteristics as well.

Ba: Bonds and preferred stock which are rated Ba are judged to have speculative elements; their future cannot be considered as well-assured. Often the protection of interest and principal payments may be very moderate, and thereby not well safeguarded during both good and bad times over the future. Uncertainty of position characterizes bonds in this class.

B: Bonds and preferred stock which are rated B generally lack characteristics of the desirable investment. Assurance of interest and principal payments or of maintenance of other terms of the contract over any long period of time may be small.

Caa: Bonds and preferred stock which are rated Caa are of poor standing. Such issues may be in default or there may be present elements of danger with respect to principal or interest.

Ca: Bonds and preferred stock which are rated Ca represent obligations which are speculative in a high degree. Such issues are often in default or have other marked shortcomings.

C: Bonds and preferred stock which are rated C are the lowest rated class of bonds, and issues so rated can be regarded as having extremely poor prospects of ever attaining any real investment standing.

Moody's assigns ratings to individual debt securities issued from medium-term note (MTN) programs, in addition to indicating ratings to MTN programs themselves. Notes issued under MTN programs with such indicated ratings are rated at issuance at the rating applicable to all pari passu notes issued under the same program, at the program's relevant indicated rating, provided such notes do not exhibit any of the characteristics listed below. For notes with any of the following characteristics, the rating of the individual note may differ from the indicated rating of the program:

1) Notes containing features which link the cash flow and/or market value to the credit performance of any third party or parties.

2) Notes allowing for negative coupons, or negative principal.

3) Notes containing any provision which could obligate the investor to make any additional payments.

Market participants must determine whether any particular note is rated, and if so, at what rating level.

B-2

Note: Moody's applies numerical modifiers 1, 2, and 3 in each generic rating classification from Aa through Caa. The modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a mid-range ranking; and the modifier 3 indicates a ranking in the lower end of that generic rating category.

STANDARD & POOR'S SHORT-TERM ISSUE CREDIT RATINGS

A-1: A short-term obligation rated A-1 is rated in the highest category by Standard & Poor's. The obligor's capacity to meet its financial commitment on the obligation is strong. Within this category, certain obligations are designated with a plus sign (+). This indicates that the obligor's capacity to meet its financial commitment on these obligations is extremely strong.

A-2: A short-term obligation rated A-2 is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher rating categories. However, the obligor's capacity to meet its financial commitment on the obligation is satisfactory.

A-3: A short-term obligation rated A-3 exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.

B: A short-term obligation rated B is regarded as having significant speculative characteristics. The obligor currently has the capacity to meet its financial commitment on the obligation; however, it faces major ongoing uncertainties which could lead to the obligor's inadequate capacity to meet its financial commitment on the obligation.

C: A short-term obligation rated C is currently vulnerable to nonpayment and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitment on the obligation.

D: A short-term obligation rated D is in payment default. The D rating category is used when payments on an obligation are not made on the date due even if the applicable grace period has not expired, unless Standard & Poor's believes that such payments will be made during such grace period. The D rating also will be used upon the filing of a bankruptcy petition or the taking of a similar action if payments on an obligation are jeopardized.

STANDARD & POOR'S LONG-TERM ISSUE CREDIT RATINGS

Issue credit ratings are based, in varying degrees, on the following considerations:

- Likelihood of payment-capacity and willingness of the obligor to meet its financial commitment on an obligation in accordance with the terms of the obligation;

- Nature of and provisions of the obligation;

- Protection afforded by, and relative position of, the obligation in the event of bankruptcy, reorganization, or other arrangement under the laws of bankruptcy and other laws affecting creditors' rights.

The issue rating definitions are expressed in terms of default risk. As such, they pertain to senior obligations of an entity. Junior obligations are typically rated lower than senior obligations, to reflect the lower priority in bankruptcy, as noted above. (Such differentiation applies when an entity has both senior and subordinated obligations, secured and unsecured obligations, or operating company and holding

B-3

company obligations.) Accordingly, in the case of junior debt, the rating may not conform exactly with the category definition.

AAA: An obligation rated AAA has the highest rating assigned by Standard & Poor's. The obligor's capacity to meet its financial commitment on the obligation is extremely strong.

AA: An obligation rated AA differs from the highest rated obligations only in small degree. The obligor's capacity to meet its financial commitment on the obligation is very strong.

A: An obligation rated A is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher rated categories. However, the obligor's capacity to meet its financial commitment on the obligation is still strong.

BBB: An obligation rated BBB exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.

Obligations rated BB, B, CCC, CC, and C are regarded as having significant speculative characteristics. BB indicates the least degree of speculation and C the highest. While such obligations will likely have some quality and protective characteristics, these may be outweighed by large uncertainties or major exposures to adverse conditions.

BB: An obligation rated BB is less vulnerable to nonpayment than other speculative issues. However, it faces major ongoing uncertainties or exposure to adverse business, financial, or economic conditions which could lead to the obligor's inadequate capacity to meet its financial commitment on the obligation.

B: An obligation rated B is more vulnerable to nonpayment than obligations rated BB, but the obligor currently has the capacity to meet its financial commitment on the obligation. Adverse business, financial, or economic conditions will likely impair the obligor's capacity or willingness to meet its financial commitment on the obligation.

CCC: An obligation rated CCC is currently vulnerable to nonpayment, and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitment on the obligation. In the event of adverse business, financial, or economic conditions, the obligor is not likely to have the capacity to meet its financial commitment on the obligation.

CC: An obligation rated CC is currently highly vulnerable to nonpayment.

C: A subordinated debt or preferred stock obligation rated C is CURRENTLY HIGHLY VULNERABLE to nonpayment. The C rating may be used to cover a situation where a bankruptcy petition has been filed or similar action taken, but payments on this obligation are being continued. A C also will be assigned to a preferred stock issue in arrears on dividends or sinking fund payments, but that is currently paying.

D: An obligation rated D is in payment default. The D rating category is used when payments on an obligation are not made on the date due even if the applicable grace period has not expired, unless Standard & Poor's believes that such payments will be made during such grace period. The D rating also will be used upon the filing of a bankruptcy petition or the taking of a similar action if payments on an obligation are jeopardized.

B-4

PLUS (+) OR MINUS (-): The ratings from AA to CCC may be modified by the addition of a plus or minus sign to show relative standing within the major rating categories.

r: This symbol is attached to the ratings of instruments with significant noncredit risks. It highlights risks to principal or volatility of expected returns which are not addressed in the credit rating.

N.R.: This indicates that no rating has been requested, that there is insufficient information on which to base a rating, or that Standard & Poor's does not rate a particular obligation as a matter of policy.

LOCAL CURRENCY AND FOREIGN CURRENCY RISKS

Country risk considerations are a standard part of Standard & Poor's analysis for credit ratings on any issuer or issue. Currency of repayment is a key factor in this analysis. An obligor's capacity to repay foreign currency obligations may be lower than its capacity to repay obligations in its local currency due to the sovereign government's own relatively lower capacity to repay external versus domestic debt. These sovereign risk considerations are incorporated in the debt ratings assigned to specific issues. Foreign currency issuer ratings are also distinguished from local currency issuer ratings to identify those instances where sovereign risks make them different for the same issuer.

B-5

PART C - OTHER INFORMATION

ITEM 24: FINANCIAL STATEMENT AND EXHIBITS

1. Financial Statement

The Registrant's statement of assets and liabilities, dated May 27, 2003, and notes thereto, schedule of investments, statement of operations, statement of changes in net assets, financial highlights (unaudited) dated June 20, 2003, and report of independent auditors thereon are filed herewith and appear in the statement of Additional Information.

2. Exhibits:

a.1.       Agreement and Declaration of Trust. (1)
a.2.       Certificate of Trust. (1)
b.         By-laws. (1)
c.         None.
d.         Form of Share Certificate. (*)
e.         Terms and Conditions of the Dividend Reinvestment
           Plan. (2)
f.         None.
g.1        Investment Management Agreement with Calamos Asset
           Management, Inc. (2)
g.2        Management Fee Waiver Agreement with Calamos Asset
           Management, Inc. (2)
h.1.       Form of Underwriting Agreement. (*)
h.2        Form of Standard Dealer Agreement. (*)
h.3.       Form of Master Agreement Among Underwriters. (*)
i.         None.
j.1.       Custody Agreement. (2)
j.2.       Foreign Custody Manager Agreement. (2)
k.1        Stock Transfer Agency Agreement. (2)
k.2        Form of Auction Agency Agreement. (*)
k.3        Form of Broker-Dealer Agreement. (*)
k.4        Form of DTC Representation Letter. (*)
l.1.       Opinion of Vedder, Price, Kaufman & Kammholz,
           P.C. (*)
l.2.       Opinion of Morris, Nichols, Arsht & Tunnell. (*)
m.         None.
n.         Consent of Auditors. (*)
o.         Not applicable.
p.         Subscription Agreement. (2)
q.         None.
r.         Code of Ethics. (2)
s.         Powers of Attorney. (2)

(*) Filed herewith.
(1) Incorporated herein by reference to the initial filing to Registrant's Registration Statement on Form N-2, File Number 333-103824, as filed on March 14, 2003.
(2) Incorporated herein by reference to Pre-Effective Amendment Number 2 to Registrant's Registration Statement on Form N-2, File Number 333-103824, as filed on May 27, 2003.

ITEM 25: MARKETING ARRANGEMENTS

Reference will be made to the underwriting agreement for the Registrant's shares of beneficial interest, filed herewith.

C-1

ITEM 26: OTHER EXPENSES AND DISTRIBUTION

The following table sets forth the estimated expenses to be incurred in connection with the offering described in this Registration Statement:

Registration fees.......................................   $  34,000
Printing and Mailing....................................      90,000
Accounting fees and expenses............................       7,500
Legal fees and expenses.................................     120,000
Trustee fees............................................      20,000
Rating Agency fees......................................     132,500
                                                           ---------
   Total................................................   $ 404,000
                                                           =========

ITEM 27. PERSONS CONTROLLED BY OR UNDER COMMON CONTROL

None.

ITEM 28. NUMBER OF HOLDERS OF SECURITIES

As of June 20, 2003, the number or record holders of each class of securities of the Registrant was

               TITLE OF CLASS                   NUMBER OF RECORD HOLDERS
               --------------                   ------------------------

Common Shares (no par value).............                 9

ITEM 29. INDEMNIFICATION

The Registrant's Agreement and Declaration of Trust (the "Declaration") provides that every person who is, or has been, a Trustee or an officer, employee or agent of the Registrant (including any individual who serves at its request as director, officer, partner, employee, Trustee, agent or the like of another organization in which it has any interest as a shareholder, creditor or otherwise ("Covered Person") shall be indemnified by the Registrant to the fullest extent permitted by law against liability and against all expenses reasonably incurred or paid by such Covered Person in connection with any claim, action, suit or proceeding in which such Covered Person becomes involved as a party or otherwise by virtue of being or having been a Covered Person and against amounts paid or incurred by such Covered Person in the settlement thereof; provided that no indemnification shall be provided to a Covered Person
(i) who shall have been adjudicated by a court or body before which the proceeding was brought (A) to be liable to the Registrant or its shareholders by reason of willful misfeasance, bad faith, gross negligence or reckless disregard of the duties involved in the conduct of his office, or (B) not to have acted in good faith and in a manner the person reasonably believed to be or not opposed to the best interest of the Registrant; or (ii) in the event of a settlement, unless there has been a determination that such Covered Person did not engage in willful misfeasance, bad faith, gross negligence or reckless disregard of the duties involved in the conduct of his office; (A) by the court or other body approving the settlement; (B) by at least a majority of those Trustees who are neither Interested Persons of the Trust nor are parties to the matter based upon a review of readily available facts (as opposed to a full trial-type inquiry);
(C) by written opinion of independent legal counsel based upon a review of readily available facts (as opposed to a full trial-type inquiry); or (D) by a vote of a majority of the Outstanding Shares entitled to vote (excluding any Outstanding Shares owned of record or beneficially by such individual).

C-2

The Declaration also provides that if any shareholder or former shareholder of any series of the Registrant shall be held personally liable solely by reason of being or having been a shareholder and not because of acts or omissions or for some other reason, the shareholder or former shareholder (or his heirs, executors, administrators or other legal representatives or in the case of any entity, its general successor) shall be entitled out of the assets belonging to the applicable series of the Registrant to be held harmless from and indemnified against all loss and expense arising from such liability. The Registrant, on behalf of its affected series, shall, upon request by such shareholder, assume the defense of any claim made against such shareholder for any act or obligation of the series and satisfy any judgment thereon from the assets of the series.

Insofar as indemnification for liability arising under the Securities Act of 1933, as amended (the "1933 Act"), may be available to Trustees, officers and controlling persons of the Registrant pursuant to the foregoing provisions, or otherwise, the Registrant has been advised that in the opinion of the SEC such indemnification is against public policy as expressed in the 1933 Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant's expenses incurred or paid by a Trustee, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such Trustee, officer or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question whether such indemnification by it is against public policy as expressed in the 1933 Act and will be governed by the final adjudication of such issue.

The registrant, its trustees and officers, its investment adviser, the other investment companies advised by the adviser and certain persons affiliated with them are insured, within the limits and subject to the limitations of the insurance, against certain expenses in connection with the defense of actions, suits or proceedings, and certain liabilities that might be imposed as a result of such actions, suits or proceedings. The insurance expressly excludes coverage for any trustee or officer whose personal dishonesty, fraudulent breach of trust, lack of good faith, or intention to deceive or defraud has been finally adjudicated or may be established or who willfully fails to act prudently.

ITEM 30. BUSINESS AND OTHER CONNECTIONS OF INVESTMENT ADVISER

The information in the Statement of Additional Information under the caption "Management of the Fund--Trustees and Officers" is incorporated by reference.

ITEM 31. LOCATION OF ACCOUNTS AND RECORDS

All such accounts, books, and other documents are maintained at the offices of the Registrant, at the offices of the Registrant's investment manager, Calamos Asset Management, Inc., 1111 East Warrenville Road, Naperville, Illinois 60563, at the offices of the custodian and/or the transfer agent, One Wall Street, New York, New York, 10286.

ITEM 32. MANAGEMENT SERVICES

Not applicable.

ITEM 33. UNDERTAKINGS

1. Not applicable.

2. Not applicable.

3. Not applicable.

4. Not applicable.

C-3

5. (a) For the purposes of determining any liability under the 1933 Act, the information omitted from the form of prospectus filed as part of a registration statement in reliance upon Rule 430A and contained in the form of prospectus filed by the Registrant under Rule 497(h) under the 1933 Act shall be deemed to be part of the Registration Statement as of the time it was declared effective.

(b) For the purpose of determining any liability under the 1933 Act, each post-effective amendment that contains a form of prospectus shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of the securities at that time shall be deemed to be the initial bona fide offering thereof.

6. The Registrant undertakes to send by first class mail or other means designed to ensure equally prominent delivery within two business days of receipt of a written or oral request the Registrant's statement of additional information.

C-4

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and Investment Company Act of 1940, the Registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized, in this City of Naperville and State of Illinois, on the 23rd day of July, 2003.

Calamos Convertible and High Income Fund

By: /s/ John P. Calamos
   --------------------------------------
   John P. Calamos, Trustee and President

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities and on the date(s) indicated.

/s/ John P. Calamos        Trustee and President (Principal
------------------------          Executive Officer)              July 23, 2003
John P. Calamos

/s/ Patrick H. Dudasik    Vice President (Principal Financial
------------------------          and Accounting Officer)         July 23, 2003
Patrick H. Dudasik

Richard J. Dowen*         Trustee

Joe E. Hanauer*           Trustee

John E. Neal*             Trustee

Weston W. Marsh*          Trustee

William Rybak*            Trustee


By: /s/ James S. Hamman, Jr.    Attorney-In-Fact                  July 23, 2003
----------------------------
James S. Hamman, Jr.

* Original powers of attorney authorizing James S. Hamman, Jr. and John P. Calamos among others, to execute this Registration Statement, and Amendments thereto, for each of the trustees of the Registrant on whose behalf this Registration Statement is filed, have been executed and filed with Amendment #2 under the Investment Company Act of 1940 to the Registration Statement filed on May 27, 2003, and are hereby incorporated by reference.

C-5

EXHIBIT INDEX

EXHIBIT       DOCUMENT
-------       --------
 a.1.       Agreement and Declaration of Trust. (*)
 a.2.       Certificate of Trust. (*)
 b.         By-laws. (*)
 c.         None.
 d.         Form of Share Certificate. (**)
 e.         Terms and Conditions of the Dividend Reinvestment
            Plan. (*)
 f.         None.
 g.1        Investment Management Agreement with Calamos Asset
            Management, Inc. (*)
 g.2        Management Fee Waiver Agreement with Calamos Asset
            Management, Inc. (*)
 h.1.       Form of Underwriting Agreement. (**)
 h.2.       Form of Standard Dealer Agreement. (**)
 h.3.       Form of Master Agreement Among Underwriters. (**)
 i.         None.
 j.1.       Custody Agreement. (*)
 j.2.       Foreign Custody Manager Agreement. (*)
 k.1        Stock Transfer Agency Agreement. (*)
 k.2        Form of Auction Agency Agreement. (**)
 k.3        Form of Broker-Dealer Agreement. (**)
 k.4        Form of DTC Representation Letter. (**)
 l.1.       Opinion of Vedder, Price, Kaufman & Kammholz, P.C.. (**)
 l.2.       Opinion of Morris, Nichols, Arsht & Tunnell. (**)
 m.         None.
 n.         Consent of Auditors. (**)
 o.         Not applicable.
 p.         Subscription Agreement. (*)
 q.         None.
 r.         Code of Ethics. (*)
 s.         Powers of Attorney. (*)

(*) Previously filed.

(**) Filed herewith.


EXHIBIT D

CERTIFICATE NUMBER NUMBER OF SHARES

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
Preferred Shares - Series ___
No Par Value
$25,000 Liquidation Preference Per Share

Cusip No.

This certifies that Cede & Co. is the registered owner of _________________ fully paid and non-assessable shares of Preferred Shares - Series ____, no par value, $25,000 liquidation preference per share, of Calamos Convertible Opportunities and High Income Fund (the "Trust") transferable only on the books of the Trust by the record holder thereof in person or by duly authorized agent upon delivery to the Trustees or the Trust's transfer agent of this Certificate properly endorsed. This Certificate is not valid unless countersigned by the transfer agent and registrar.

A statement in full, of all the designations, preferences, qualifications, limitations, restrictions and special or relative rights of the shares of each class authorized to be issued, will be furnished by the Trust to any shareholders upon request and without charge.

IN WITNESS WHEREOF, the Trust has caused this Certificate to be signed by its duly authorized officers this __th day of July, 2003.

THE BANK OF NEW YORK                    CALAMOS CONVERTIBLE AND HIGH INCOME FUND
as Transfer Agent and Registrar

                                        By:
                                           -------------------------------------

By:
   -----------------------------

ATTEST:

By

FOR VALUE RECEIVED, __________________________ hereby sells, assigns and transfers unto _________________________________ Shares represented by this Certificate, and do hereby irrevocably constitute and appoint ______________ Attorney to transfer the said Shares on the books of the within named Trust with full power of substitution in the premises.

Dated             ,
     ------------- -----

In presence of

_______________________________________  _______________________________________

Shares of Preferred Shares evidenced by this Certificate may be sold, transferred, or otherwise disposed of only pursuant to the provisions of the Trust's Agreement and Declaration of Trust and the Trust's Statement of Preferences.

The Trust will furnish to any shareholder, upon request and without charge, the Trust's Agreement and Declaration of Trust and a full statement of the designations, preferences, limitations and relative rights of the shares of each class or series of shares of beneficial interest of the Trust authorized to be issued, so far as they have been determined, and the authority of the Board of Trustees to determine the relative rights and preferences of subsequent classes or series. Any such request should be addressed to the Secretary of the Trust.

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to the Trust or its agent for registration of transfer, exchange, or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

2

EXHIBIT h.1

AUCTION RATE CUMULATIVE PREFERRED SHARES

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

3,000 SHARES, SERIES M
3,000 SHARES, SERIES TU
3,000 SHARES, SERIES W
3,000 SHARES, SERIES TH
3,000 SHARES, SERIES F
2,200 SHARES, SERIES A
LIQUIDATION PREFERENCE $25,000 PER SHARE

UNDERWRITING AGREEMENT

July 22, 2003

Citigroup Global Markets Inc.
RBC Dain Rauscher Inc.
Wachovia Capital Markets, LLC
As Representatives of the Several Underwriters

c/o Citigroup Global Markets Inc.
388 Greenwich Street
New York, New York 10013

Dear Sirs:

The undersigned, Calamos Convertible and High Income Fund, a Delaware statutory trust (the "Fund") and Calamos Asset Management, Inc., an Illinois corporation (the "Investment Adviser") address you as Underwriters and as the representatives (the "Representatives") of each of the other persons, firms and corporations, if any, listed in Schedule I hereto (herein collectively called "Underwriters"). The Fund proposes to issue and sell an aggregate of (i) 3,000 shares of its Series M Preferred Shares, (ii) 3,000 shares of its Series TU Preferred Shares, (iii) 3,000 shares of its Series W Preferred Shares, (iv) 3,000 shares of its Series TH Preferred Shares, (v) 3,000 shares of its Series F Preferred Shares and (vi) 2,200 shares of its Series A Preferred Shares, each no par value per share, with a liquidation preference of $25,000 per share (collectively, the "Preferred Shares"), to the several Underwriters. The Preferred Shares will be authorized by, and subject to the terms and conditions of, the Statement of


Preferences of Preferred Shares adopted in connection with the issuance of the Preferred Shares and as amended through the date hereof ("Statement") and the Agreement and Declaration of Trust dated March 12, 2003, as it may be amended (the "Declaration of Trust") in the forms filed as exhibits to the Registration Statement referred to in Section 1 of this Agreement.

The Fund and the Investment Adviser wish to confirm as follows their agreements with you and the other several Underwriters on whose behalf you are acting in connection with the several purchases of the Preferred Shares by the Underwriters.

The Fund has entered into an Investment Management Agreement with the Investment Adviser dated as of May 1, 2003, a Fund Accounting Servicing Agreement with U.S. Bancorp Fund Services, LLC dated as of May 1, 2003, a Custody Agreement with The Bank of New York dated as of March 21, 2003, a Stock Transfer Agency Agreement with The Bank of New York dated as of May 30, 2003, and is entering into an Auction Agency Agreement with The Bank of New York to be dated July __, 2003, and such agreements are herein referred to as the "Management Agreement", the "Servicing Agreement", the "Custodian Agreement", the "Transfer Agency Agreement" and the "Auction Agency Agreement," respectively. Collectively, the Management Agreement, the Servicing Agreement, the Custodian Agreement, the Transfer Agency Agreement and the Auction Agency Agreement are herein referred to as the "Fund Agreements". This Underwriting Agreement is herein referred to as the "Agreement".
1. Registration Statement and Prospectus. The Fund has prepared and filed with the Securities and Exchange Commission (the "Commission") in accordance with the provisions of the Securities Act of 1933, as amended (the "1933 Act"), the Investment Company Act of 1940, as amended (the "1940 Act"), and the rules and regulations of the Commission under the 1933 Act (the "1933 Act Rules and Regulations") and the 1940 Act (the "1940 Act Rules and Regulations" and together with the 1933 Act Rules and Regulations, the "Rules and Regulations") a registration statement on Form N-2 (File Nos. 333-105808 and 811-21319) under the 1933 Act and the 1940 Act and may pursuant to the Rules and Regulations prepare and file an additional registration statement relating to a portion of the Preferred Shares pursuant to Rule 462(b) of the 1933 Act Rules and Regulations (a "462(b) Registration Statement") (collectively, the "registration statement"), including a prospectus (including any statement of additional information) relating to the Preferred Shares, and a notification of registration of the Fund as an investment company under the 1940 Act on Form N-8A (the "1940 Act Notification"). The term "Registration Statement" as used in this Agreement means the registration statement (including all financial schedules and exhibits), as amended at the time it becomes effective under the 1933 Act or, if the registration statement became effective under the 1933 Act prior to the execution of this Agreement, as amended or supplemented at the time it became effective prior to the execution of this Agreement, and includes any information deemed to be included by Rule 430A under the 1933 Act Rules and Regulations. If it is contemplated, at the time this Agreement is executed, that a post-effective amendment to the registration statement will be filed under the 1933 Act and must be declared effective before the offering of the Preferred Shares may commence, the term "Registration Statement" as used in this Agreement means the registration statement as amended by said post-effective amendment. For the avoidance of doubt, if the Fund has filed a 462(b) Registration Statement, the term "Registration Statement" as used in this Agreement shall include such 462(b) Registration Statement. The term "Prospectus" as used in

2

this Agreement means the prospectus (including the statement of additional information) in the form included in the Registration Statement or, if the prospectus (including the statement of additional information) included in the Registration Statement omits information in reliance on Rule 430A and such information is included in a prospectus (including the statement of additional information) filed with the Commission pursuant to Rule 497(h) under the 1933 Act Rules and Regulations, the term "Prospectus" as used in this Agreement means the prospectus (including the statement of additional information) in the form included in the Registration Statement as supplemented by the addition of the information contained in the prospectus (including the statement of additional information) filed with the Commission pursuant to Rule 497(h). The term "Prepricing Prospectus" as used in this Agreement means the prospectus (including the statement of additional information) subject to completion in the form included in the registration statement at the time of the initial filing of the registration statement with the Commission and as such prospectus (including the statement of additional information) shall have been amended from time to time prior to the date of the Prospectus, together with any other prospectus (including any other statement of additional information) relating to the Fund other than the Prospectus.

The Fund has furnished the Representatives with copies of such registration statement, each amendment to such registration statement filed with the Commission and each Prepricing Prospectus.

2. Agreements to Sell and Purchase. The Fund hereby agrees, subject to all the terms and conditions set forth herein, to issue and to sell to each Underwriter and, upon the basis of the representations, warranties and agreements of the Fund and the Investment Adviser herein contained and subject to all of the other terms and conditions set forth herein, each Underwriter agrees, severally and not jointly, to purchase from the Fund at a purchase price per share of $_______ (the "purchase price per share"), the number of Preferred Shares set forth opposite the name of such Underwriter in Schedule I hereto (or such number of Preferred Shares increased as set forth in Section 10 hereof).

3. Terms of Public Offering. The Fund and the Investment Adviser have been advised by you that the Underwriters propose to make a public offering of their respective portions of the Preferred Shares as soon after the Registration Statement and this Agreement have become effective as in your judgment is advisable and initially to offer the Preferred Shares upon the terms set forth in the Prospectus.

4. Delivery of Preferred Shares and Payments Therefor.

(a) Delivery to the Underwriters of and payment to the Fund for the Preferred Shares shall be made at the office of Citigroup Global Markets Inc., 388 Greenwich Street, New York, New York 10013 or through the facilities of the Depository Trust Company or another mutually agreeable facility, at 9:00 A.M., New York City time, on July ___, 2003 (the "Closing Date"). The place of closing for the Preferred Shares and the Closing Date may be varied by agreement between you and the Fund.

3

(b) Certificates in definitive form, each representing one series of the Preferred Shares registered in the name of Cede & Co., as nominee for the Depository Trust Company, shall be delivered by or on behalf of the Fund to the Depository Trust Company for the account of the Underwriters on the Closing Date.

5. Agreements of the Fund and the Investment Adviser. The Fund and the Investment Adviser, jointly and severally, agree with the several Underwriters as follows:

(a) If, at the time this Agreement is executed and delivered, it is necessary for the Registration Statement or a post-effective amendment thereto to be declared effective under the 1933 Act before the offering of the Preferred Shares may commence, the Fund will use its reasonable best efforts to cause the Registration Statement or such post-effective amendment to become effective under the 1933 Act as soon as possible. If the Registration Statement has become effective and the Prospectus contained therein omits certain information at the time of effectiveness pursuant to Rule 430A of the 1933 Act Rules and Regulations, the Fund will file a Prospectus including such information pursuant to Rule 497(h) of the 1933 Act Rules and Regulations, as promptly as practicable, but no later than the second business day following the earlier of the date of the determination of the offering price of the Preferred Shares or the date the Prospectus is first used after the effective date of the Registration Statement. If the Registration Statement has become effective and the Prospectus contained therein does not so omit such information, the Fund will file a Prospectus pursuant to Rule 497 (c) or a certification pursuant to Rule 497(j) of the 1933 Act Rules and Regulations as promptly as practicable, but no later than the fifth business day following the date of the later of the effective date of the Registration Statement or the commencement of the public offering of the Preferred Shares after the effective date of the Registration Statement. The Fund will advise you promptly and, if requested by you, will confirm such advice in writing (i) when the Registration Statement or such post-effective amendment has become effective and (ii) when the Prospectus has been timely filed pursuant to Rule 497(c) or Rule 497(h) of the 1933 Act Rules and Regulations or the certification permitted pursuant to Rule 497(j) of the 1933 Act Rules and Regulations has been timely filed, whichever is applicable.

(b) The Fund will advise you promptly and, if requested by you, will confirm such advice in writing: (i) of any request made by the Commission for amendment of or a supplement to the Registration Statement, any Prepricing Prospectus or the Prospectus (or any amendment or supplement to any of the foregoing) or for additional information, (ii) of the issuance by the Commission, the National Association of Securities Dealers, Inc. (the "NASD"), any state securities commission, any national securities exchange, any arbitrator, any court or any other governmental, regulatory, self-regulatory or administrative agency or any official of any order suspending the effectiveness of the Registration Statement, prohibiting or suspending the use of the Prospectus, any Prepricing Prospectus or any sales material (as hereinafter defined), of any notice pursuant to
Section 8(e) of the 1940 Act, of the suspension of qualification of the Preferred Shares for offering or sale in any jurisdiction, or the initiation or contemplated initiation of any proceeding for any such purposes, (iii) of receipt by the Fund, the

4

Investment Adviser, any affiliate of the Fund or the Investment Adviser or any representative or attorney of the Fund or the Investment Adviser of any other material communication from the Commission, the NASD, any state securities commission, any national securities exchange, any arbitrator, any court or any other governmental, regulatory, self-regulatory or administrative agency or any official relating to the Fund (if such communication relating to the Fund is received by such person within three years after the date of this Agreement, and excluding any routine correspondence with the Commission the contents of which could not reasonably be expected to have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund), the Registration Statement, the 1940 Act Notification, the Prospectus, any Prepricing Prospectus, any sales material (as hereinafter defined) (or any amendment or supplement to any of the foregoing), this Agreement or any of the Fund Agreements and (iv) within the period of time referred to in paragraph (f) below, of any material, adverse change in the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund or the Investment Adviser or of the happening of any event which makes any statement of a material fact made in the Registration Statement, the Prospectus, any Prepricing Prospectus or any sales material (as hereinafter defined) (or any amendment or supplement to any of the foregoing) untrue or which requires the making of any additions to or changes in the Registration Statement, the Prospectus, any Prepricing Prospectus or any sales materials (as hereinafter defined) (or any amendment or supplement to any of the foregoing) in order to state a material fact required by the 1933 Act, the 1940 Act or the Rules and Regulations to be stated therein or necessary in order to make the statements therein (in the case of a prospectus, in light of the circumstances under which they were made) not misleading or of the necessity to amend or supplement the Registration Statement, the Prospectus, any Prepricing Prospectus or any sales material (as hereinafter defined) (or any amendment or supplement to any of the foregoing) to comply with the 1933 Act, the 1940 Act, the Rules and Regulations or any other law or order of any court or regulatory body. If at any time the Commission, the NASD, any state securities commission, any national securities exchange, any arbitrator, any court or any other governmental, regulatory, self-regulatory or administrative agency or any official shall issue any order suspending the effectiveness of the Registration Statement, prohibiting or suspending the use of the Prospectus, any Prepricing Prospectus or any sales material (as hereinafter defined) (or any amendment or supplement to any of the foregoing) or suspending the qualification of the Preferred Shares for offering or sale in any jurisdiction, the Fund will use its reasonable best efforts to obtain the withdrawal of such order at the earliest possible time.
(c) The Fund will furnish to you, without charge, three signed copies of the Registration Statement and the 1940 Act Notification as originally filed with the Commission and of each amendment thereto, including financial statements and all exhibits thereto (except any post-effective amendment required by Rule 8b-16 of the 1940 Act Rules and Regulations which is filed with the Commission after the later of
(x) one year from the date of this Agreement and (y) the date on which the distribution of the Preferred Shares is completed) and will also furnish to you, without charge, such number

5

of conformed copies of the registration statement as originally filed and of each amendment thereto (except any post-effective amendment required by Rule 8b-16 of the 1940 Act Rules and Regulations which is filed with the Commission after the later of (x) one year from the date of this Agreement and (y) the date on which the distribution of the Preferred Shares is completed), with or without exhibits, as you may reasonably request.

(d) The Fund will not (i) file any amendment to the Registration Statement or make any amendment or supplement to the Prospectus, any Prepricing Prospectus or any sales material (as hereinafter defined) (or any amendment or supplement to any of the foregoing) of which you shall not previously have been advised or to which you shall reasonably object within a reasonable time after being so advised or (ii) so long as, in the opinion of counsel for the Underwriters, a Prospectus is required to be delivered in connection with sales by any Underwriter or dealer, file any information, documents or reports pursuant to the Securities Exchange Act of 1934, as amended (the "1934 Act"), without delivering a copy of such information, documents or reports to you, as Representatives of the Underwriters, prior to or concurrently with such filing.

(e) Prior to the execution and delivery of this Agreement, the Fund has delivered to you, without charge, in such quantities as you have reasonably requested, copies of each form of any Prepricing Prospectus. The Fund consents to the use, in accordance with the provisions of the 1933 Act and with the securities or Blue Sky laws of the jurisdictions in which the Preferred Shares are offered by the several Underwriters and by dealers, prior to the date of the Prospectus, of each Prepricing Prospectus so furnished by the Fund.

(f) As soon after the execution and delivery of this Agreement as possible and thereafter from time to time, for such period as in the opinion of counsel for the Underwriters a prospectus is required by the 1933 Act to be delivered in connection with sales of Preferred Shares by any Underwriter or dealer, the Fund will expeditiously deliver to each Underwriter and each dealer, without charge, as many copies of the Prospectus (and of any amendment or supplement thereto) as you may reasonably request. The Fund consents to the use of the Prospectus (and of any amendments or supplements thereto) in accordance with the provisions of the 1933 Act, with the securities or Blue Sky laws of the jurisdictions in which the Preferred Shares are offered by the several Underwriters and by all dealers to whom Preferred Shares may be sold and with other applicable laws and regulations, both in connection with the offering or sale of the Preferred Shares and for such period of time thereafter as the Prospectus is required by law to be delivered in connection with sales of Preferred Shares by any Underwriter or dealer. If during such period of time any event shall occur that in the judgment of the Fund or in the opinion of counsel for the Underwriters is required to be set forth in the Prospectus (as then amended or supplemented) or should be set forth therein in order to make the statements therein, in light of the circumstances under which they were made, not misleading or if it is necessary to supplement or amend the Prospectus to comply with the 1933 Act, the 1940 Act, the Rules and Regulations or any other law, rule or regulation, the Fund will forthwith prepare and, subject to the provisions of paragraph (d) above, file with the Commission an appropriate amendment or supplement thereto and

6

will expeditiously furnish to the Underwriters and dealers, without charge, such number of copies thereof as they shall reasonably request. In the event that the Prospectus is to be amended or supplemented, the Fund, if requested by you, and to the extent consistent with applicable law, will promptly issue a press release announcing or disclosing the matters to be covered by the proposed amendment or supplement.
(g) The Fund will cooperate with you and with counsel for the Underwriters in connection with the registration or qualification of the Preferred Shares for offering and sale by the several Underwriters and by dealers under the securities or Blue Sky laws of such jurisdictions as you may designate and will file such consents to service of process or other documents necessary or appropriate in order to effect such registration or qualification; provided that in no event shall the Fund be obligated to qualify to do business in any jurisdiction where it is not now so qualified or to take any action which would subject it to service of process in suits, other than those arising out of the offering or sale of the Preferred Shares, in any jurisdiction where it is not now so subject.

(h) The Fund will make generally available to its security holders an earnings statement, which need not be audited, covering a twelve-month period commencing after the effective date of the Registration Statement and ending not later than 15 months thereafter, as soon as practicable after the end of such period, which earnings statement shall satisfy the provisions of Section 11(a) of the 1933 Act and Rule 158 of the 1933 Act Rules and Regulations.

(i) The Fund will comply with the undertaking set forth in paragraph 6 of Item 33 of Part C of the Registration Statement.

(j) During the period of three years hereafter, the Fund will furnish or make available to you (i) as soon as available, a copy of each report of the Fund mailed to shareholders or filed with the Commission and (ii) from time to time such other information concerning the Fund as you may reasonably request.

(k) If this Agreement shall terminate or shall be terminated after its execution pursuant to any provisions hereof (other than pursuant to the second paragraph of Section 10 hereof or by notice given by you terminating this Agreement pursuant to Section 10 or
Section 11 hereof) or if this Agreement shall be terminated by the Underwriters because of any failure or refusal on the part of the Fund or the Investment Adviser to comply with the terms or fulfill any of the conditions of this Agreement, the Fund and the Investment Adviser, jointly and severally, agree to reimburse the Representatives for all reasonable out-of-pocket expenses (including reasonable fees and expenses of counsel for the Underwriters) incurred by you in connection herewith, but the Fund and the Investment Adviser shall in no event be liable for any internal cost of the Underwriters or any loss of anticipated profits or speculative, consequential or similar damages for such termination.

(l) The Fund will direct the investment of the net proceeds of the offering of the Preferred Shares in such a manner as to comply with the investment objectives, policies and restrictions of the Fund as described in the Prospectus.

7

(m) Except as provided in this Agreement, the Fund will not sell, contract to sell or otherwise dispose of, any senior securities (as defined in the 1940 Act) or grant any options or warrants to purchase senior securities of the Fund, for a period of 180 days after the date of the Prospectus, without the prior written consent of Citigroup Global Markets Inc.
(n) The Fund will use its reasonable best efforts to cause the Preferred Shares, prior to the Closing Date, to be assigned a rating of `Aaa' by Moody's Investors Service, Inc. ("Moody's") and `AAA' by Fitch, Inc. ("Fitch", and together with Moody's, the "Rating Agencies").

(o) Except as stated in this Agreement and in the Prospectus (and any amendment or supplement thereto), neither the Fund, the Investment Adviser nor their affiliates will take, directly or indirectly, any action designed to or which reasonably should be expected to cause or result in or which will constitute stabilization or manipulation of the price of the Preferred Shares or the common shares of the Fund in violation of federal securities laws.
6. Representations and Warranties of the Fund and the Investment Adviser. The Fund and the Investment Adviser, jointly and severally, represent and warrant to each Underwriter that:

(a) Each Prepricing Prospectus included as part of the registration statement as originally filed or as part of any amendment or supplement thereto, complied when so filed in all material respects with the provisions of the 1933 Act, the 1940 Act and the Rules and Regulations.

(b) The Registration Statement, in the form in which it became or becomes effective and also in such form as it may be when any post-effective amendment thereto shall become effective, and the Prospectus and any amendment or supplement thereto when filed with the Commission under Rule 497 of the 1933 Act Rules and Regulations, and the 1940 Act Notification when originally filed with the Commission and any amendment or supplement thereto when filed with the Commission (i) complied or will comply in all material respects with the provisions of the 1933 Act, the 1940 Act and the Rules and Regulations and (ii) did not or will not at any such times contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein (in the case of a prospectus, in light of the circumstances under which they were made) not misleading; except that this representation and warranty does not apply to statements in or omissions from the Registration Statement or the Prospectus (or any amendment or supplement thereto) made in reliance upon and in conformity with information relating to any Underwriter furnished

8

to the Fund in writing by or on behalf of any Underwriter through you expressly for use therein.

(c) All the issued and outstanding common shares of the Fund have been duly authorized and validly issued, are fully paid and, except as described in the registration statement relating to the common shares, nonassessable and are free of any preemptive or similar rights; the Preferred Shares have been duly authorized and, when issued and delivered to the Underwriters against payment therefor in accordance with the terms hereof, will be validly issued, fully paid and, except as described in the Registration Statement, nonassessable and free of any preemptive or similar rights. The Preferred Shares conform to the description thereof in the Registration Statement and the Prospectus (and any amendment or supplement to either of them); and the common shares conform to the description thereof in the Registration Statement and the Prospectus (and any amendment or supplement to either of them).

(d) The Fund has been duly formed and is validly existing in good standing as a statutory trust under the laws of the State of Delaware, with full power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement and the Prospectus (and any amendment or supplement to either of them) and is duly registered and qualified to conduct business and is in good standing in each jurisdiction or place where the nature of its properties or the conduct of its business requires such registration or qualification, except where the failure so to register or to qualify does not have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund. The Fund has no subsidiaries.

(e) There are no legal or governmental proceedings pending or, to the knowledge of the Fund, threatened, against the Fund or to which the Fund or any of its properties is subject, that are required to be described in the Registration Statement or the Prospectus (or any amendment or supplement to either of them) but are not described as required by the 1933 Act, the 1940 Act or the Rules and Regulations and there are no agreements, contracts, indentures, leases or other instruments that are required to be described in the Registration Statement or the Prospectus (or any amendment or supplement to either of them) or to be filed as an exhibit to the Registration Statement that are not described or filed as required by the 1933 Act, the 1940 Act or the Rules and Regulations.

(f) The Fund is not in violation of the Statement, the Declaration of Trust or the by-laws of the Fund ("By-Laws") or in material violation of any material law, ordinance, administrative or governmental rule or regulation applicable to the Fund, including, without limitation, the applicable provisions of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith, or of any material decree of the Commission, the NASD, any state securities commission, any national securities exchange, any arbitrator, any court or any other governmental, regulatory, self-regulatory or administrative agency or any official having jurisdiction over the Fund or in breach or default in any material respect in the performance of any obligation, agreement or

9

condition contained in any material bond, debenture, note or any other evidence of indebtedness or in any agreement, indenture, lease or other instrument to which the Fund is a party or by which it or any of its properties may be bound.

(g) Neither the issuance and sale of the Preferred Shares, the execution, delivery or performance of this Agreement nor any of the Fund Agreements by the Fund, nor the consummation by the Fund of the transactions contemplated hereby or thereby (A) requires any consent, approval, authorization or other order of or registration or filing which has not yet been obtained or made with the Commission, the NASD, any national securities exchange, any arbitrator, any court or any other governmental, regulatory, self-regulatory or administrative agency or any official (except compliance with the securities or Blue Sky laws of various jurisdictions which have been or will be effected in accordance with this Agreement and except for compliance with the filing requirements of the NASD Division of Corporate Finance) or conflicts or will conflict with or constitutes or will constitute a breach of the Statement, the Declaration of Trust or By-Laws of the Fund or (B) conflicts or will conflict with or constitutes or will constitute a breach of or a default under, any material agreement, indenture, lease or other instrument to which the Fund is a party or by which it or any of its properties may be bound or materially violates or will materially violate any material statute, law, regulation or filing or judgment, injunction, order or decree applicable to the Fund or any of its properties or will result in the creation or imposition of any material lien, charge or encumbrance upon any property or assets of the Fund pursuant to the terms of any agreement or instrument to which it is a party or by which it may be bound or to which any of the property or assets of the Fund is subject.

(h) Since the respective dates as of which information is given in the Registration Statement and the Prospectus (and any amendment or supplement to either of them), except as otherwise stated therein, (A) there has been no material, adverse change in the condition (financial or other), business, properties, net assets or results of operations of the Fund or business prospects (other than as a result of a change in the financial markets generally) of the Fund, whether or not arising in the ordinary course of business, and (B) there have been no transactions entered into by the Fund which are material to the Fund other than those in the ordinary course of its business as described in the Prospectus (and any amendment or supplement thereto).

(i) The accountants, Deloitte & Touche LLP, who have audited or shall audit at or prior to the Closing Date the Statement of Assets and Liabilities included in the Registration Statement and the Prospectus (and any amendment or supplement to either of them), are an independent public accounting firm as required by the 1933 Act, the 1940 Act and the Rules and Regulations.

(j) The financial statements, together with related schedules and notes, included in the Registration Statement and the Prospectus (or any amendment or supplement to either of them) present fairly the financial position of the Fund on the basis stated in the

10

Registration Statement and the Prospectus at the respective dates or for the respective periods to which they apply, and such statements and related schedules and notes have been prepared in accordance with generally accepted accounting principles consistently applied throughout the periods involved except as disclosed therein.

(k) The Fund, subject to the Registration Statement having been declared effective and the filing of the Prospectus or a certification under Rule 497 under the Rules and Regulations, has taken all required action under the 1933 Act, the 1940 Act and the Rules and Regulations to make the public offering and consummate the sale of the Preferred Shares as contemplated by this Agreement.

(l) The execution and delivery of, and the performance by the Fund of its obligations under, this Agreement and the Fund Agreements have been duly and validly authorized by the Fund and this Agreement and the Fund Agreements have been duly executed and delivered by the Fund and constitute the valid and legally binding agreements of the Fund, enforceable against the Fund in accordance with their terms, except as rights to indemnity and contribution hereunder may be limited by federal or state securities laws and subject to the qualification that the enforceability of the Fund's obligations hereunder and thereunder may be limited by bankruptcy, insolvency, reorganization, moratorium and other laws relating to or affecting creditors' rights generally and by general equitable principles.

(m) Except as disclosed in the Registration Statement and the Prospectus (and any amendment or supplement to either of them), subsequent to the respective dates as of which such information is given in the Registration Statement and the Prospectus (and any amendment or supplement to either of them), the Fund has not incurred any liability or obligation, direct or contingent, that is material to the Fund and there has not been any change in the capital stock or material increase in the short-term debt or long-term debt of the Fund.

(n) The Fund has not distributed and, prior to the later to occur of (i) the Closing Date and (ii) completion of the distribution of the Preferred Shares, will not distribute to the public in either printed or electronic form any offering material in connection with the offering and sale of the Preferred Shares other than the Registration Statement, the Prepricing Prospectus included in Pre-Effective Amendment No.1 to the Registration Statement, and the Prospectus.

(o) The Fund has such licenses, permits, and authorizations of governmental or regulatory authorities ("permits") as are necessary to own its property and to conduct its business in the manner described in the Prospectus (and any amendment or supplement thereto), except where the failure to hold any such permit does not have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund; the Fund has fulfilled and performed all its material obligations with respect to such permits and no event has occurred which allows or, after notice or lapse of time, would allow, revocation or termination thereof or results in any other material impairment of the rights of the Fund under any such permit, subject

11

in each case to such qualification as may be set forth in the Prospectus (and any amendment or supplement thereto); and, except as described in the Prospectus (and any amendment or supplement thereto), none of such permits contains any restriction that is materially burdensome to the Fund.

(p) The Fund has filed all tax returns required to be filed and the Fund is not in material default in the payment of any taxes which were shown as payable on said returns or any assessments with respect thereto; and, as required by Subchapter M of the Code, the Fund is currently in compliance with the requirements to qualify as a regulated investment company under the Code.

(q) The Fund maintains and will maintain a system of internal accounting controls sufficient to provide reasonable assurances that
(i) transactions are executed in accordance with management's general or specific authorization and with the investment policies and restrictions of the Fund and the applicable requirements of the 1940 Act, the 1940 Act Rules and Regulations and the Internal Revenue Code of 1986, as amended (the "Code"); (ii) transactions are recorded as necessary to permit preparation of financial statements in conformity with generally accepted accounting principles, to calculate net asset value, to maintain accountability for assets and to maintain material compliance with the books and records requirements under the 1940 Act and the 1940 Act Rules and Regulations; (iii) access to assets is permitted only in accordance with management's general or specific authorization; and (iv) the recorded account for assets is compared with existing assets at reasonable intervals and appropriate action is taken with respect to any differences.

(r) The conduct by the Fund of its business (as described in the Prospectus) does not require it to be the owner, possessor or licensee of any patents, patent licenses, trademarks, service marks or trade names which it does not own, possess or license, except where the failure to own, possess or license any such patent, patent license, trademark, service mark or trade name does not have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund.

(s) Except as stated in this Agreement and in the Prospectus (and any amendment or supplement thereto), the Fund has not taken, directly or indirectly, any action designed to or which should reasonably be expected to cause or result in or which will constitute stabilization or manipulation of the price of Preferred Shares or the common shares of the Fund in violation of federal securities laws and the Fund is not aware of any such action taken or to be taken by any affiliates of the Fund.

(t) The Fund is duly registered under the 1940 Act as a closed-end, diversified management investment company and the 1940 Act Notification has been duly filed with the Commission and, at the time of filing thereof and at the time of filing any amendment or supplement thereto, conformed in all material respects with all applicable provisions of the 1940 Act and the 1940 Act Rules and Regulations. The Fund has not received any notice from the Commission pursuant to
Section 8(e) of the 1940 Act with respect to the

12

1940 Act Notification or the Registration Statement (or any amendment or supplement to either of them).

(u) All advertising, sales literature or other promotional material (including "prospectus wrappers" and "broker kits"), whether in printed or electronic form, authorized in writing by or prepared by the Fund or the Investment Adviser for use in connection with the offering and sale of the Preferred Shares (collectively, "sales material") complied and comply in all material respects with the applicable requirements of the 1933 Act, the 1933 Act Rules and Regulations and the rules and interpretations of the NASD and if required to be filed with the NASD under the NASD's conduct rules were so filed. No sales material contained or contains an untrue statement of a material fact or omitted or omits to state a material fact required to be stated therein or necessary to make the statements therein, in light of the circumstances under which they were made, not misleading.

(v) This Agreement and each of the Fund Agreements complies in all material respects with all applicable provisions of the 1940 Act, the 1940 Act Rules and Regulations, the Investment Advisers Act of 1940, as amended (the "Advisers Act") and the rules and regulations adopted by the Commission under the Advisers Act (the "Advisers Act Rules and Regulations").
(w) No holder of any security of the Fund has any right to require registration of common shares of the Fund, the Preferred Shares, or any other security of the Fund because of the filing of the Registration Statement or consummation of the transactions contemplated by this Agreement.
(x) The common shares of the Fund are duly listed on the New York Stock Exchange ("NYSE").

(y) The Fund intends to direct the investment of the proceeds of the offering of the Preferred Shares in such a manner as to comply with the requirements of Subchapter M of the Code.

(z) The statements in the Registration Statement and Prospectus, insofar as they are descriptions of contracts, agreements or other legal documents or refer to statements of law or legal conclusions, are accurate and present fairly the information required to be shown.

13

7. Representations and Warranties of the Investment Adviser. The Investment Adviser represents and warrants to each Underwriter as follows:

(a) The Investment Adviser is a corporation duly organized and validly existing in good standing under the laws of the State of Illinois, with full corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Registration Statement and the Prospectus (and any amendment or supplement to either of them) and is duly registered and qualified to conduct business and is in good standing in each jurisdiction or place where the nature of its properties or conduct of its business requires such registration or qualification, except where the failure so to register or to qualify would not have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Investment Adviser.

(b) The Investment Adviser is duly registered as an investment adviser under the Advisers Act and is not prohibited by the Advisers Act, the 1940 Act, the Advisers Act Rules and Regulations or the 1940 Act Rules and Regulations from acting under the Management Agreement for the Fund as contemplated by the Registration Statement and the Prospectus (or any amendment or supplement thereto).

(c) The Investment Adviser has full power and authority to enter into the Management Agreement; the execution and delivery of, and the performance by the Investment Adviser of its obligations under, this Agreement and the Management Agreement have been duly and validly authorized by the Investment Adviser; and this Agreement and the Management Agreement have been duly executed and delivered by the Investment Adviser and constitute the valid and legally binding agreements of the Investment Adviser, enforceable against the Investment Adviser in accordance with their terms, except as rights to indemnity and contribution hereunder may be limited by federal or state securities laws and subject to the qualification that the enforceability of the Investment Adviser's obligations hereunder and thereunder may be limited by bankruptcy, insolvency, reorganization, moratorium and other laws relating to or affecting creditors' rights generally and by general equitable principles.

(d) The Investment Adviser has the financial resources available to it necessary for the performance of its services and obligations as contemplated in the Registration Statement and the Prospectus (or any amendment or supplement thereto) and under this Agreement and the Management Agreement.

(e) The Investment Adviser is not in violation of its Certificate of Incorporation, By-Laws or other organizational documents or in violation of the applicable provisions of the Sarbanes-Oxley Act of 2002 and the rules and regulations promulgated in connection therewith, in default under any material agreement, indenture or instrument or in breach or violation of any judgment, decree, order, rule or regulation of any court or governmental or self-regulatory agency or body except where such violation would not have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Investment Adviser or on the ability

14

of the Investment Adviser to perform its obligations under this Agreement or the Management Agreement.

(f) The description of the Investment Adviser and its business, and the statements attributable to the Investment Adviser, in the Registration Statement and the Prospectus (and any amendment or supplement thereto) complied and comply in all material respects with the provisions of the 1933 Act, the 1940 Act, the Advisers Act, the Rules and Regulations and the Advisers Act Rules and Regulations and did not, do not and will not contain an untrue statement of a material fact or omit to state a material fact required to be stated therein or necessary to make the statements therein (in the case of a prospectus, in light of the circumstances under which they were made) not misleading.

(g) There are no legal or governmental proceedings pending or, to the knowledge of the Investment Adviser, threatened against the Investment Adviser or to which any of its properties is subject, that are required to be described in the Registration Statement or the Prospectus (or any amendment or supplement to either of them) but are not described as required or that reasonably should be expected to result in any material, adverse change in the condition (financial or other), business, prospects, properties, net assets or results of operations of the Investment Adviser or that reasonably should have a material, adverse effect on the ability of the Investment Adviser to fulfill its obligations hereunder or under the Management Agreement.
(h) Since the respective dates as of which information is given in the Registration Statement and the Prospectus (and any amendment or supplement to either of them), except as otherwise stated therein, (A) there has been no material, adverse change in the condition (financial or other), business, properties, net assets or results of operations or business prospects of the Investment Adviser, whether or not arising from the ordinary course of business and (B) there have been no transactions entered into by the Investment Adviser which are material to the Investment Adviser or the Fund other than those in the ordinary course of its business as described in the Prospectus.
(i) The Investment Adviser has such licenses, permits and authorizations of governmental or regulatory authorities ("permits") as are necessary to own its property and to conduct its business in the manner described in the Prospectus, except where the failure to hold any such permit does not have a material, adverse effect on the condition (financial or other), business, prospects, properties, net assets or results of operations of the Investment Adviser or on the ability of the Investment Adviser to perform its obligations under this Agreement or the Management Agreement; the Investment Adviser has fulfilled and performed all its material obligations with respect to such permits and no event has occurred which allows, or after notice or lapse of time would allow, revocation or termination thereof or results in any other material impairment of the rights of the Investment Adviser under any such permit.

(j) This Agreement and the Management Agreement comply in all material respects with all applicable provisions of the 1940 Act, the 1940 Act Rules and Regulations, the Advisers Act and the Advisers Act Rules and Regulations.

15

(k) Neither the execution, delivery or performance of this Agreement or the Management Agreement, nor the consummation by the Investment Adviser of the transactions contemplated hereby or thereby (A) requires any consent, approval, authorization or other order of or registration or filing with the Commission, the NASD, any state securities commission, any national securities exchange, any arbitrator, any court or any other governmental, regulatory, self-regulatory or administrative agency or any official (except if applicable, compliance with the securities or Blue Sky laws of various jurisdictions which have been or will be effected in accordance with this Agreement and compliance with the filing requirements, if any, of the NASD Division of Corporate Finance) or conflicts or will conflict with or constitutes or will constitute a breach of or a default under, the Certificate of Incorporation or By-Laws of the Investment Adviser or (B) conflicts or will conflict with or constitutes or will constitute a breach of or a default under, any material agreement, indenture, lease or other instrument to which the Investment Adviser is a party or by which it or any of its properties may be bound or materially violates or will materially violate any material statute, law, regulation or filing or judgment, injunction, order or decree applicable to the Investment Adviser or any of its properties or will result in the creation or imposition of any material lien, charge or encumbrance upon any property or assets of the Investment Adviser pursuant to the terms of any agreement or instrument to which it is a party or by which it may be bound or to which any of the property or assets of the Investment Adviser is subject.

(l) Except as stated in this Agreement and in the Prospectus (and in any amendment or supplement thereto), the Investment Adviser has not taken, directly or indirectly, any action designed to or which should reasonably be expected to cause or result in or which will constitute stabilization or manipulation of the price of the Preferred Shares or the common shares of the Fund in violation of federal securities laws and the Investment Adviser is not aware of any such action taken or to be taken by any affiliates of the Investment Adviser.

(m) In the event that the Fund or the Investment Adviser makes available any promotional materials intended for use only by qualified broker-dealers and registered representatives thereof by means of an Internet web site or similar electronic means, the Investment Adviser will install and maintain pre-qualification and password-protection or similar procedures which are reasonably designed to effectively prohibit access to such promotional materials by persons other than qualified broker-dealers and registered representatives thereof.

8. Indemnification and Contribution.

(a) The Fund and the Investment Adviser, jointly and severally, agree to indemnify and hold harmless each of you and each other Underwriter and each person, if any, who controls any Underwriter within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act, from and against any and all losses, claims, damages, liabilities and expenses, joint or several (including reasonable costs of investigation) arising out of or based upon any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, the Prospectus, any Prepricing

16

Prospectus, any sales material (or any amendment or supplement to any of the foregoing) or arising out of or based upon any omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein (in the case of a prospectus, in light of the circumstances under which they were made) not misleading, except insofar as such losses, claims, damages, liabilities or expenses arise out of or are based upon any untrue statement or omission or alleged untrue statement or omission which has been made therein or omitted therefrom in reliance upon and in conformity with the information relating to such Underwriters furnished in writing to the Fund by or on behalf of any Underwriter through you expressly for use in connection therewith; provided, however, that the foregoing indemnity with respect to the Registration Statement, the Prospectus or any Prepricing Prospectuses (or any amendment or supplement to any of the foregoing) shall not inure to the benefit of any Underwriter from whom the person asserting any loss, claim, damage, liability or expense purchased Preferred Shares, if it is shown that a copy of the Prospectus, as then amended or supplemented, which would have cured any defect giving rise to such loss, claim, damage, liability or expense was not sent or delivered to such person by or on behalf of such Underwriter, if required by law to be so delivered, at or prior to the confirmation of the sale of such Preferred Shares to such person and such Prospectus, amendments and supplements had been provided by the Fund to the Underwriters in the requisite quantity and on a timely basis to permit proper delivery. The foregoing indemnity agreement shall be in addition to any liability which the Fund or the Investment Adviser may otherwise have.

(b) If any action, suit or proceeding shall be brought against any Underwriter or any person controlling any Underwriter in respect of which indemnity may be sought against the Fund or the Investment Adviser, such Underwriter or such controlling person shall promptly notify the Fund or the Investment Adviser and the Fund or the Investment Adviser shall assume the defense thereof, including the employment of counsel and the payment of all fees and expenses. Such Underwriter or any such controlling person shall have the right to employ separate counsel in any such action, suit or proceeding and to participate in the defense thereof, but the fees and expenses of such counsel shall be at the expense of such Underwriter or controlling person unless (i) the Fund or the Investment Adviser have agreed in writing to pay such fees and expenses, (ii) the Fund and the Investment Adviser have failed within a reasonable time to assume the defense and employ counsel or (iii) the named parties to any such action, suit or proceeding (including any impleaded parties) include both such Underwriter or such controlling person and the Fund or the Investment Adviser and such Underwriter or such controlling person shall have been advised by its counsel that representation of such indemnified party and the Fund or the Investment Adviser by the same counsel would be inappropriate under applicable standards of professional conduct (whether or not such representation by the same counsel has been proposed) due to actual or potential differing interests between them (in which case the Fund and the Investment Adviser shall not have the right to assume the defense of such action, suit or proceeding on behalf of such Underwriter or such controlling person). It is understood, however, that the Fund and the Investment Adviser shall, in connection with any one such action, suit or proceeding or separate but

17

substantially similar or related actions, suits or proceedings in the same jurisdiction arising out of the same general allegations or circumstances be liable for the reasonable fees and expenses of only one separate firm of attorneys (in addition to any local counsel if there is any action, suit or proceeding in more than one jurisdiction) at any time for all such Underwriters and controlling persons not having actual or potential differing interests with you or among themselves, which firm shall be designated in writing by Citigroup Global Markets Inc. and that, subject to the requirements of 1940 Act Release No. 11330, all such fees and expenses shall be reimbursed promptly as they are incurred. The Fund and the Investment Adviser shall not be liable for any settlement of any such action, suit or proceeding effected without the written consent of the Fund or the Investment Adviser, but if settled with such written consent or if there be a final judgment for the plaintiff in any such action, suit or proceeding, the Fund and the Investment Adviser agree to indemnify and hold harmless any Underwriter, to the extent provided in the preceding paragraph, and any such controlling person from and against any loss, liability, damage or expense by reason by such settlement or judgment.

(c) Each Underwriter agrees, severally and not jointly, to indemnify and hold harmless the Fund and the Investment Adviser, their trustees, directors, any officers of the Fund who sign the Registration Statement and any person who controls the Fund or the Investment Adviser within the meaning of Section 15 of the 1933 Act or Section 20 of the 1934 Act, to the same extent as the foregoing indemnity from the Fund and the Investment Adviser to each Underwriter, but only with respect to information relating to such Underwriter furnished in writing by or on behalf of such Underwriter through you expressly for use in the Registration Statement, the Prospectus or the Prepricing Prospectus (or any amendment or supplement to any of the foregoing). If any action, suit or proceeding shall be brought against the Fund or the Investment Adviser, any of their trustees, directors, any such officer or any such controlling person, based on the Registration Statement, the Prospectus or the Prepricing Prospectus (or any amendment or supplement to any of the foregoing) and in respect of which indemnity may be sought against any Underwriter pursuant to this paragraph (c), such Underwriter shall have the rights and duties given to the Fund by paragraph (b) above (except that if the Fund or the Investment Adviser shall have assumed the defense thereof such Underwriter shall not be required to do so, but may employ separate counsel therein and participate in the defense thereof, but the fees and expenses of such counsel shall be at such Underwriter's expense) and the Fund and the Investment Adviser, their trustees, directors, any such officer and any such controlling person shall have the rights and duties given to the Underwriters by paragraph (b) above. The foregoing indemnity agreement shall be in addition to any liability which the Underwriters may otherwise have.

(d) If the indemnification provided for in this Section 8 is unavailable to an indemnified party under paragraphs (a) or (c) hereof in respect of any losses, claims, damages, liabilities or expenses referred to therein, then an indemnifying party, in lieu of indemnifying such indemnified party, shall contribute to the amount paid or payable by such indemnified party as a result of such losses, claims, damages, liabilities or expenses (i) in such proportion as is appropriate to reflect the relative benefits received by the Fund

18

and the Investment Adviser on the one hand (treated jointly for this purpose as one person) and the Underwriters on the other hand from the offering of the Preferred Shares or (ii) if the allocation provided by clause (i) above is not permitted by applicable law, in such proportion as is appropriate to reflect not only the relative benefits referred to in clause (i) above but also the relative fault of the Fund and the Investment Adviser on the one hand (treated jointly for this purpose as one person) and of the Underwriters on the other hand in connection with the statements or omissions which resulted in such losses, claims, damages, liabilities or expenses, as well as any other relevant equitable considerations. The relative benefits received by the Fund and the Investment Adviser on the one hand (treated jointly for this purpose as one person) and the Underwriters on the other hand shall be deemed to be in the same proportion as the total net proceeds from the offering (before deducting expenses) received by the Fund as set forth in the table on the cover page of the Prospectus bear to the total payments received by the Underwriters with respect to the Preferred Shares as set forth in the table on the cover page of the Prospectus. The relative fault of the Fund and the Investment Adviser on the one hand (treated jointly for this purpose as one person) and of the Underwriters on the other hand shall be determined by reference to, among other things, whether the untrue or alleged untrue statement of a material fact or the omission or alleged omission to state a material fact relates to information supplied by the Fund and the Investment Adviser on the one hand (treated jointly for this purpose as one person) or by the Underwriters on the other hand and the parties' relative intent, knowledge, access to information and opportunity to correct or prevent such statement or omission.
(e) The Fund, the Investment Adviser and the Underwriters agree that it would not be just and equitable if contribution pursuant to this Section 8 were determined by pro rata allocation (even if the Underwriters were treated as one entity for such purpose) or by any other method of allocation that does not take account of the equitable considerations referred to in paragraph (d) above. The amount paid or payable by an indemnified party as a result of the losses, claims, damages, liabilities and expenses referred to in paragraph (d) above shall be deemed to include, subject to the limitations set forth above, any legal or other expenses reasonably incurred by such indemnified party in connection with defending any such action, suit or proceeding. Notwithstanding the provisions of this Section 8, no Underwriter shall be required to contribute any amount in excess of the amount by which the total price of the Preferred Shares underwritten by it and distributed to the public exceeds the amount of any damages which such Underwriter has otherwise been required to pay by reason of such untrue or alleged untrue statement or omission or alleged omission. No person guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) shall be entitled to contribution from any person who was not guilty of such fraudulent misrepresentation. The Underwriters' obligations to contribute pursuant to this Section 8 are several in proportion to the respective number of Preferred Shares set forth opposite their names in Schedule I (or such numbers of Preferred Shares increased as set forth in Section 10 hereof) and not joint.

(f) No indemnifying party shall, without the prior written consent of the indemnified party, effect any settlement of any pending or threatened action, suit or

19

proceeding in respect of which any indemnified party is or could have been a party and indemnity could have been sought hereunder by such indemnified party, unless such settlement includes an unconditional release of such indemnified party from all liability from claimants on claims that are the subject matter of such action, suit or proceeding.

(g) Any losses, claims, damages, liabilities or expenses for which an indemnified party is entitled to indemnification or contribution under this Section 8 shall be paid by the indemnifying party to the indemnified party as such losses, claims, damages, liabilities or expenses are incurred. The indemnity and contribution agreements contained in this Section 8 and the representations and warranties of the Fund and the Investment Adviser set forth in this Agreement shall remain operative and in full force and effect, regardless of (i) any investigation made by or on behalf of any Underwriter or any person controlling any Underwriter, the Fund, the Investment Adviser or their trustees, directors or officers or any person controlling the Fund or the Investment Adviser, (ii) acceptance of any Preferred Shares and payment therefor hereunder and (iii) any termination of this Agreement. A successor to any Underwriter or to the Fund, the Investment Adviser or their trustees, directors or officers or any person controlling any Underwriter, the Fund or the Investment Adviser shall be entitled to the benefits of the indemnity, contribution and reimbursement agreements contained in this Section 8.

9. Conditions of Underwriters' Obligations. The several obligations of the Underwriters to purchase any Preferred Shares hereunder are subject to, in the good faith judgment of the Underwriters, the accuracy of and compliance with the representations, warranties and agreements of and by the Fund and the Investment Adviser contained herein on and as of the date hereof, the date on which the Registration Statement becomes or became effective, the date of the Prospectus (and of any amendment or supplement thereto), and the Closing Date to the accuracy and completeness of all statements made by the Fund, the Investment Adviser or any of their officers in any certificate delivered to the Representatives or their counsel pursuant to this Agreement and to the following conditions:

(a) If, at the time this Agreement is executed and delivered, it is necessary for the Registration Statement or a post-effective amendment thereto to be declared effective before the offering of the Preferred Shares may commence, the Registration Statement or such post-effective amendment shall have become effective not later than 5:30 p.m., New York City time, on the date hereof or at such later date and time as shall be consented to in writing by you and all filings, if any, required by Rules 497 and 430A under the 1933 Act Rules and Regulations shall have been timely made; no order suspending the effectiveness of the Registration Statement shall have been issued and no proceeding for that purpose shall have been instituted or, to the knowledge of the Fund, the Investment Adviser or any Underwriter, threatened by the Commission and any request of the Commission for additional information (to be included in the Registration Statement or the Prospectus or otherwise) shall have been complied with to your satisfaction.
(b) You shall have received on the Closing Date an opinion of Vedder, Price, Kaufman & Kammholz, P.C., special counsel for the Fund, dated the Closing Date and

20

addressed to you, as Representatives of the several Underwriters, in substantially the form attached hereto as Exhibit A.
(c) You shall have received on the Closing Date an opinion of Vedder, Price, Kaufman & Kammholz, P.C., special counsel for the Investment Adviser, dated the Closing Date and addressed to you, as Representatives of the several Underwriters, in substantially the form attached hereto as Exhibit B.

(d) You shall have received on the Closing Date an opinion of Simpson Thacher & Bartlett LLP, counsel for the Underwriters, dated the Closing Date and addressed to you, as Representatives of the several Underwriters, with respect to such matters as the Underwriters may require and the Fund, the Investment Adviser and their respective counsels shall have furnished to such counsel such documents as they may request for the purpose of enabling them to pass upon such matters.
(e) You shall have received letters addressed to you, as Representatives of the several Underwriters, and dated the date hereof and the Closing Date from Deloitte & Touche LLP, independent certified public accountants, substantially in the forms heretofore approved by you.

(f) (i) No order suspending the effectiveness of the Registration Statement or prohibiting or suspending the use of the Prospectus (or any amendment or supplement thereto) or any Prepricing Prospectus or any sales material shall have been issued and no proceedings for such purpose or for the purpose of commencing an enforcement action against the Fund, the Investment Adviser or, with respect to the transactions contemplated by the Prospectus (or any amendment or supplement thereto) and this Agreement, any Underwriter, may be pending before or, to the knowledge of the Fund, the Investment Adviser or any Underwriter or in the reasonable view of counsel to the Underwriters, shall be threatened or contemplated by the Commission at or prior to the Closing Date and that any request for additional information on the part of the Commission (to be included in the Registration Statement, the Prospectus or otherwise) be complied with to the satisfaction of the Representatives, (ii) there shall not have been any change in the capital stock of the Fund nor any material increase in debt of the Fund from that set forth in the Prospectus (and any amendment or supplement thereto) and the Fund shall not have sustained any material liabilities or obligations, direct or contingent, other than those reflected in the Prospectus (and any amendment or supplement thereto); (iii) since the date of the Prospectus there shall not have been any material, adverse change in the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund or the Investment Adviser; (iv) the Fund and the Investment Adviser must not have sustained any material loss or interference with its business from any court or from legislative or other governmental action, order or decree or from any other occurrence not described in the Registration Statement and the Prospectus (and any amendment or supplement to either of them); and (v) all of the representations and warranties of the Fund and the Investment Adviser contained in this Agreement shall be true and correct on and as of the date hereof and as of the Closing Date as if made on and as of the Closing Date.

21

(g) Subsequent to the effective date of this Agreement, there shall not have occurred (i) any change or any development involving a prospective change in or affecting the condition (financial or other), business, prospects, properties, net assets or results of operations of the Fund or the Investment Adviser not contemplated by the Prospectus (and any amendment or supplement thereto), which in your opinion, as Representatives of the several Underwriters, would materially, adversely affect the market for the Preferred Shares or (ii) any event or development relating to or involving the Fund, the Investment Adviser or any officer or trustee or director of the Fund or the Investment Adviser which makes any statement of a material fact made in the Prospectus (or any amendment or supplement thereto) untrue or which, in the opinion of the Fund and its counsel or the Underwriters and their counsel, requires the making of any addition to or change in the Prospectus (or any amendment or supplement thereto) in order to state a material fact required by the 1933 Act, the 1940 Act, the Rules and Regulations or any other law to be stated therein or necessary in order to make the statements therein (in the case of a prospectus, in light of the circumstances under which they were made) not misleading, if amending or supplementing the Prospectus (or any amendment or supplement thereto) to reflect such event or development would, in your opinion, as Representatives of the several Underwriters, materially, adversely affect the market for the Preferred Shares.

(h) Neither the Fund nor the Investment Adviser shall have failed at or prior to the Closing Date to have performed or complied with any of the agreements herein contained and required to be performed or complied with by them at or prior to the Closing Date.

(i) You shall have received on the Closing Date a certificate, dated such date, of the president, any managing director or any vice president and of the controller, treasurer or assistant treasurer of each of the Fund and the Investment Adviser certifying that (i) the signers have carefully examined the Registration Statement, the Prospectus (and any amendments or supplements to either of them) and this Agreement, (ii) the representations and warranties of the Fund (with respect to the certificates from such Fund officers) and the representations and warranties of the Investment Adviser (with respect to the certificates from such officers of the Investment Adviser) in this Agreement are true and correct on and as of the date of the certificate as if made on such date, (iii) since the date of the Prospectus (and any amendment or supplement thereto) there has not been any material, adverse change in the condition (financial or other), business, prospects (other than as a result of a change in the financial markets generally), properties, net assets or results of operations of the Fund (with respect to the certificates from such Fund officers) or the Investment Adviser (with respect to the certificates from such officers of the Investment Adviser), (iv) to the knowledge of such officers after reasonable investigation, no order suspending the effectiveness of the Registration Statement or prohibiting the sale of any of the Preferred Shares or having a material, adverse effect on the Fund (with respect to the certificates from such Fund officers) or the Investment Adviser (with respect to the certificates from such officers of the Investment Adviser) has been issued and no proceedings for any such purpose are pending before or

22

threatened by the Commission or any court or other regulatory body, the NASD, any state securities commission, any national securities exchange, any arbitrator, or any other governmental, regulatory, self-regulatory or administrative agency or any official, (v) each of the Fund (with respect to certificates from such Fund officers) and the Investment Adviser (with respect to certificates from such officers of the Investment Adviser) has performed and complied with all agreements that this Agreement requires it to perform by such Closing Date, (vi) neither the Fund (with respect to the certificate from such officers of the Fund) nor the Investment Adviser (with respect to the certificate from such officers of the Investment Adviser) has sustained any material loss or interference with its business from any court or from legislative or other governmental action, order or decree or from any other occurrence not described in the Registration Statement and the Prospectus and any amendment or supplement to either of them and (vii) with respect to the certificate from such officers of the Fund, there has not been any change in the capital stock of the Fund nor any material increase in the debt of the Fund from that set forth in the Prospectus (and any amendment or supplement thereto) and the Fund has not sustained any material liabilities or obligations, direct or contingent, other than those reflected in the Prospectus (and any amendment or supplement thereto).

(j) The Fund shall have furnished to you reports showing compliance with the asset coverage requirements of the 1940 Act and the Preferred Shares Basic Maintenance Amount Test (as defined in the Statement), each dated the Closing Date and in form and substance satisfactory to you. Each such report shall assume the receipt of the net proceeds from the sale of the Preferred Shares and may use portfolio holdings and valuations as of the close of business of any day not more than six business days preceding the Closing Date, provided, however, that the Fund represents in such report that its total net assets as of the Closing Date have not declined by 5% or more from such valuation date.

(k) The Fund shall have delivered and the Underwriters shall have received evidence satisfactory to the Underwriters that each series of Preferred Shares is rated `Aaa' by Moody's and `AAA' by Fitch as of the Closing Date, and there shall not have been given any notice of any intended or potential downgrading, or of any review for a potential downgrading, in the rating accorded to the shares of each series of the Preferred Shares by either Rating Agency.

(j) The Fund and the Investment Adviser shall have furnished to you such further certificates, documents and opinions of counsel as you shall reasonably request (including certificates of officers of the Fund and the Investment Adviser).

All such opinions, certificates, letters and other documents will be in compliance with the provisions hereof only if they are satisfactory in form and substance to you and your counsel acting in good faith.

Any certificate or document signed by any officer of the Fund or the Investment Adviser and delivered to you, as Representatives of the Underwriters or to Underwriters' counsel, shall be deemed a representation and warranty by the Fund or the Investment Adviser to each Underwriter as to the statements made therein.

23

10. Effective Date of Agreement. This Agreement shall become effective:
(i) upon the execution and delivery hereof by the parties hereto; or (ii) if, at the time this Agreement is executed and delivered, it is necessary for the Registration Statement or a post-effective amendment thereto to be declared effective before the offering of the Preferred Shares may commence, when notification of the effectiveness of the Registration Statement or such post-effective amendment has been released by the Commission. Until such time as this Agreement shall have become effective, it may be terminated by the Fund by notifying you or by you, as Representatives of the several Underwriters, by notifying the Fund.

If any one or more of the Underwriters shall fail or refuse to purchase Preferred Shares which it or they have agreed to purchase hereunder and the aggregate number of Preferred Shares which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase is not more than one-tenth of the aggregate number of the Preferred Shares, each non-defaulting Underwriter shall be obligated, severally, in the proportion which the aggregate number of Preferred Shares set forth opposite its name in Schedule I hereto bears to the aggregate number of Preferred Shares set forth opposite the names of all non-defaulting Underwriters or in such other proportion as you may specify in accordance with the Citigroup Global Markets Inc. Master Agreement Among Underwriters, to purchase Preferred Shares which such defaulting Underwriter or Underwriters agreed but failed or refused to purchase. If any Underwriter or Underwriters shall fail or refuse to purchase Preferred Shares and the aggregate number of Preferred Shares with respect to which such default occurs is more than one-tenth of the aggregate number of Preferred Shares and arrangements satisfactory to you and the Fund for the purchase of such Preferred Shares by one or more non-defaulting Underwriters or other party or parties approved by you and the Fund are not made within 36 hours after such default, this Agreement will terminate without liability on the part of any non-defaulting Underwriter or the Fund. In any such case which does not result in termination of this Agreement, either you or the Fund shall have the right to postpone the Closing Date, but in no event for longer than seven days, in order that the required changes, if any, in the Registration Statement and the Prospectus or any other documents or arrangements may be effected. Any action taken under this paragraph shall not relieve any defaulting Underwriter from liability in respect of any such default of any such Underwriter under this Agreement. The term "Underwriter" as used in this Agreement includes, for all purposes of this Agreement, any party not listed in Schedule I hereto who, with your approval and the approval of the Fund, purchases Preferred Shares which a defaulting Underwriter agreed, but failed or refused, to purchase.

Any notice under this Section 10 may be made by telegram, facsimile or telephone but shall be subsequently confirmed by letter.

11. Termination of Agreement. This Agreement shall be subject to termination in your absolute discretion, without liability on the part of the Underwriters to the Fund or the Investment Adviser, by notice given to the Fund or the Investment Adviser prior to delivery of and payment for the Preferred Shares if at any time prior to such time (i) trading in the Fund's common shares shall have been suspended by the Commission or the NYSE or trading in securities generally on the NYSE shall have been suspended or limited or minimum prices for trading in securities generally shall have been established on the NYSE, (ii) a commercial banking moratorium shall have been declared by either federal or New York state authorities, or

24

(iii) there shall have occurred any outbreak or escalation of hostilities, declaration by the United States of a national emergency or war, or other calamity or crisis the effect of which on financial markets in the United States is such as to make it, in your sole judgment, impracticable or inadvisable to proceed with the offering or delivery of the Preferred Shares as contemplated by the Prospectus (exclusive of any supplement thereto). Notice of such termination may be given to the Fund or the Investment Adviser by telegram, facsimile or telephone and shall be subsequently confirmed by letter.

12. Expenses. The Fund agrees to pay the following costs and expenses and all other costs and expenses incident to the performance by the Fund of its obligations hereunder: (a) the preparation, printing or reproduction, filing (including, without limitation, the filing fees prescribed by the 1933 Act, the 1940 Act and the Rules and Regulations) and distribution of the Registration Statement (including exhibits thereto), the Prospectus, each Prepricing Prospectus and the 1940 Act Notification and all amendments or supplements to any of them, (b) the printing (or reproduction) and delivery (including postage, air freight charges and charges for counting and packaging) of such copies of the Registration Statement, the Prospectus, each Prepricing Prospectus, any sales material and all amendments or supplements to any of them as may be reasonably requested for use in connection with the offering and sale of the Preferred Shares, (c) the preparation, printing, authentication, issuance and delivery of certificates for the Preferred Shares, including any stamp taxes and transfer agent and registrar fees payable in connection with the original issuance and sale of such Preferred Shares, (d) the registrations or qualifications, if necessary of the Preferred Shares for offer and sale under the securities or Blue Sky laws of the several states as provided in Section 5(g) hereof (including the reasonable fees, expenses and disbursements of counsel for the Underwriters relating to the preparation, printing or reproduction and delivery of the preliminary and supplemental Blue Sky Memoranda and such registration and qualification), (e) the fees and expenses of the Fund's independent accountants, counsel for the Fund and of the transfer agent and the auction agent, (f) the expenses of delivery to the Underwriters and dealers (including postage, air freight and the cost of counting and packaging) of copies of the Prospectus, the Prepricing Prospectus, any sales material and all amendments or supplements to the Prospectus as may be requested for use in connection with the offering and sale of the Preferred Shares, (g) the printing (or reproduction) and delivery of this Agreement, any dealer agreements, the preliminary and supplemental Blue Sky Memoranda and all other company-authorized agreements or other documents printed (or reproduced) and delivered in connection with the offering of the Preferred Shares, (h) the filing fees and the fees and expenses of counsel for the Underwriters in connection with any filings required to be made with the NASD and incurred with respect to the review of the offering of the Preferred Shares by the NASD, and (i) fees paid to the Rating Agencies.

Notwithstanding the foregoing, in the event that the sale of the Preferred Shares is not consummated pursuant to Section 2 hereof, the Investment Adviser will pay the costs and expenses of the Fund set forth above in this
Section 12 (a) through (i), and reimbursements of Underwriter expenses in connection with the offering shall be made in accordance with Section 5(k) hereof.

13. Information Furnished by the Underwriters. The names of the underwriters and numbers of Shares listed opposite such names in the first paragraph under the caption

25

"Underwriting" in the Prospectus, as well as, under the same caption, the third paragraph, the first sentence of the twelfth paragraph, the first sentence of the thirteenth paragraph, the fourteenth paragraph and the eighteenth paragraph constitute the only information relating to any Underwriter furnished to the Fund in writing by or on behalf of the Underwriters through you as such information is referred to herein, expressly for use in the Prospectus.
14. Miscellaneous. Except as otherwise provided in Sections 5, 10 and 11 hereof, notice given pursuant to any provision of this Agreement shall be in writing and shall be delivered (a) if to the Fund or the Investment Adviser, c/o Calamos Asset Management, Inc. at 1111 E. Warrenville Road, Naperville, Illinois 60563, Attention: Ian McPherson, or (b) if to you, as Representatives of the Underwriters, at the office of Citigroup Global Markets Inc. at 388 Greenwich Street, New York, New York 10013, Attention: Manager, Investment Banking Division. This Agreement has been and is made solely for the benefit of the several Underwriters, the Fund, the Investment Adviser, their trustees, directors and officers and the other controlling persons referred to in Section 8 hereof and their respective successors and assigns to the extent provided herein and no other person shall acquire or have any right under or by virtue of this Agreement. Neither the term "successor" nor the term "successors and assigns" as used in this Agreement shall include a purchaser from any Underwriter of any of the Preferred Shares in his status as such purchaser.

15. Applicable Law; Counterparts. This Agreement shall be governed by and construed in accordance with the laws of the State of New York.

This Agreement may be signed in various counterparts which together constitute one and the same instrument. If signed in counterparts, this Agreement shall not become effective unless at least one counterpart hereof shall have been executed and delivered on behalf of each party hereto.

26

Please confirm that the foregoing correctly sets forth the agreement among the Fund and the Investment Adviser and the several Underwriters.

Very truly yours,

CALAMOS CONVERTIBLE AND HIGH INCOME FUND

By:

Name:


Title:

CALAMOS ASSET MANAGEMENT, INC.

By:

Name:


Title:

27

Confirmed as of the date
first above written on
behalf of themselves and
the other several Underwriters
named in Schedule I hereto.

By:         CITIGROUP GLOBAL MARKETS INC.
            RBC DAIN RAUSCHER INC.
            WACHOVIA CAPITAL MARKETS, LLC

AS REPRESENTATIVES OF THE SEVERAL UNDERWRITERS

By: CITIGROUP GLOBAL MARKETS INC.

By:
Name:
Title:

28

July __, 2003

SCHEDULE I

NAME OF UNDERWRITER                                         NUMBER OF
                                                            PREFERRED SHARES

Citigroup Global Markets Inc.
RBC Dain Rauscher Inc.
Wachovia Capital Markets, LLC

_____________________________

Total Underwriters (__) [___________]


EXHIBIT A

[Form of Vedder, Price, Kaufman & Kammholz, P.C. Opinion] Based upon and subject to the qualifications, assumptions and limitations set forth herein, we are of the opinion that:

1. The Trust has been duly formed and is validly existing in good standing as a statutory trust under the Delaware Act. The Trust has the statutory trust power and authority to own property and conduct its business as described in the Prospectus;

2. Under the Delaware Act and the Declaration, the execution and delivery of the Underwriting Agreement and each of the Trust Agreements by the Trust, and the performance by the Trust of its obligations thereunder, have been duly authorized by all requisite statutory trust action on the part of the Trust; the Underwriting Agreement and each of the Trust Agreements have been duly executed and delivered by the Trust; each of the Trust Agreements constitute the valid and binding agreement of the Trust enforceable against the Trust in accordance with its terms; and the Underwriting Agreement and each of the Trust Agreements comply with all applicable provisions of the 1940 Act and the 1940 Act Rules and Regulations and the Advisers Act and the Advisers Act Rules and Regulations;

3. The Common Shares have been duly authorized for issuance by the Trust, are validly issued and, subject to the qualifications below, fully paid and non-assessable beneficial interests in the Common Series. The holders of Common Shares will be, subject to the terms of the Declaration, entitled to the same limitation of personal liability extended to stockholders of private corporations for profit organized under the General Corporation Law of the State of Delaware; provided, however, that we express no opinion with respect to the liability of any holder of Common Shares who is, was or may become a named Trustee of the Trust.

4. The Shares have been duly authorized for issuance by the Trust and, when issued and delivered against payment therefor in accordance with the terms, conditions, requirements and procedures set forth in the Underwriting Agreement, will be validly issued and, subject to the qualifications below, fully paid and non-assessable beneficial interests in the Trust. The holders of Shares will be, subject to the terms of the Declaration, entitled to the same limitation of personal liability extended to stockholders of private corporations for profit organized under the

A-1

General Corporation Law of the State of Delaware; provided, however, that we express no opinion with respect to the liability of any holder of Shares who is, was or may become a named Trustee of the Trust;

5. Under the Declaration and the Delaware Act, the issuance of the Shares is not subject to preemptive rights;

6. The form of certificate evidencing the Shares complies with all applicable requirements of the Delaware Act;

7. The execution and delivery by the Trust of the Underwriting Agreement and the Trust Agreements, the consummation by the Trust of the transactions contemplated by the Underwriting Agreement and the Trust Agreements, the performance by the Trust of its obligations thereunder and the issuance and sale by the Trust of the Shares will not violate (i) the Organizational Documents and (ii) any applicable Delaware law or administrative regulation;

8. None of the issuance and sale of the Shares by the Trust pursuant to the Underwriting Agreement, the execution and delivery of the Underwriting Agreement or any of the Trust Agreements by the Trust, or the performance by the Trust of its agreements under the Underwriting Agreement or any of the Trust Agreements (A) requires any consent, approval, authorization or other order of or registration or filing with, the Commission, the National Association of Securities Dealers, Inc., or any national securities exchange, or governmental body or agency, or arbitrator or court of the United States of America, or State of Illinois or State of Delaware or, based solely on the Docket Search, an order of any Delaware Court (as that term is defined in the opinion of Morris, Nichols, Arsht & Tunnell) (except (1) the absence of which, either individually or in the aggregate, would not have a material adverse effect on the Fund or the offering of the Shares as contemplated in the Underwriting Agreement; (2) such as may have been obtained prior to the date hereof; and (3) such as may be required for compliance with state securities or blue sky laws of various jurisdictions) or (B) violates or will violate or constitutes or will constitute a breach of any of the provisions of the Organizational Documents of the Trust or (C) violates or will violate or constitutes or will constitute a breach of, or a default under, any material agreement, indenture, lease or other instrument known to us to which the Trust is party or by which it or any of its properties may be bound, or violates any existing material United States of America or State of Illinois or State of Delaware statute, law or regulation (assuming compliance with all applicable state securities and blue sky laws, and except that, in the published opinion of the Commission, the indemnification provisions in the Underwriting Agreement and the Trust Agreements, insofar as they relate to indemnification for liabilities arising under the 1933 Act, are against public policy as expressed in the 1933 Act and therefore unenforceable), or violates any judgment, injunction, order or decree known to us to be applicable to the Trust or any of its properties, or will result in the creation or imposition of any material lien, charge or encumbrance upon any property or assets of the Trust pursuant to the terms of any agreement or instrument known to us to which the Trust is a party or by which any of its property or assets is bound. To the best of our knowledge, the Trust is not subject to any order of any court or of any arbitrator, governmental authority or administrative agency of the United States of America or the State of Illinois;

A-2

9. Based solely on the Docket Search, there is not any Delaware court action, suit or proceeding pending against the Trust.

10. The Registration Statement is effective under the 1933 Act and was filed under the 1940 Act; any required filing of the Prospectus pursuant to Rule 497 of the 1933 Act Rules and Regulations has been made within the time periods required by Rule 497; no stop-order suspending the effectiveness of the Registration Statement or order pursuant to Section 8(e) of the 1940 Act has been issued and to the best of our knowledge, no proceeding for any such purpose has been instituted or is pending or threatened in writing by the Commission;

11. The Trust is registered under the 1940 Act as a closed-end diversified management investment company;

12. The description of the authorized shares of beneficial interest of the Trust under the captions "Description of Preferred Shares," "The Auction" and "Description of Common Shares" in the Prospectus conform in all material respects as to legal matters to the terms thereof contained in the Trust's Declaration and the Statement;

13. The statements made in the Prospectus under the captions "U.S. Federal Income Tax Matters," insofar as they constitute matters of law or legal conclusions, have been reviewed by us and constitute accurate statements of any such matters of law or legal conclusions;

14. The Registration Statement and the Prospectus and each amendment or supplement to the Registration Statement and the Prospectus as of their respective issue dates (except the financial statements and other financial data contained therein, as to which we express no opinion) comply as to form in all material respects with the requirements of the 1933 Act, the 1940 Act and the Rules and Regulations;

15. To the best of our knowledge, there are no legal or governmental proceedings pending or threatened in writing against the Trust, or to which the Trust or any of its properties is subject, that are required to be described in the Registration Statement or the Prospectus, but are not described therein as required;

16. To the best of our knowledge, there are no material agreements, contracts, indentures, leases or other instruments that are required to be described in the Registration Statement or the Prospectus, or to be filed as an exhibit to the Registration Statement that are not described or filed as required by the 1933 Act, the 1940 Act or the Rules and Regulations; and

17. The Trust's registration statement on Form 8-A under the 1934 Act is effective.

A-3

We have participated in conferences with officers and employees of the Trust, Adviser, representatives of the independent auditors for the Fund, special Delaware counsel to the Trust, the Underwriters and counsel for the Underwriters at which the contents of the Registration Statement and the Prospectus and related matters were discussed and, although we are not passing upon, and do not assume any responsibility for the accuracy, completeness or fairness of the statements contained in the Registration Statement or the Prospectus, except to the limited extent otherwise covered by paragraphs 12 and 13 hereof and have made no independent check or verification thereof, on the basis of the foregoing, no facts have come to our attention that would have led us to believe that (a) the Registration Statement, at the time it became effective, contained any untrue statement of a material fact or omitted to state any material fact required to be stated therein or necessary to make the statements therein not misleading, (b) the Prospectus, as of its date and as of the Closing Date, contained or contains an untrue statement of a material fact or omitted or omits to state a material fact necessary to make the statements contained therein, in the light of the circumstances under which they were made, not misleading, or (c) the 1940 Act Notification as of March 14, 2003 contained any untrue statement of a material fact or omitted to state any material fact required to be stated therein or necessary in order to make the statements therein not misleading, except that in each case we express no belief with respect to the financial statements, schedules and other financial information and statistical data included therein or excluded therefrom or the exhibits to the Registration Statement.

A-4

[Form of Morris, Nichols, Arsht & Tunnell Opinion]
1. The Trust has been duly formed and is validly existing in good standing as a statutory trust under the Delaware Act. The Trust has the statutory trust power and authority to own property and conduct its business as described in the Prospectus.

2. Under the Delaware Act and the Governing Instrument, the execution and delivery of the Underwriting Agreement and each of the Trust Agreements by the Trust, and the performance by the Trust of its obligations thereunder, have been duly authorized by all requisite statutory trust action on the part of the Trust.

3. The Common Shares have been duly authorized for issuance by the Trust, are validly issued and, subject to the qualifications below, fully paid and non-assessable beneficial interests in the Common Series. The holders of Common Shares will be, subject to the terms of the Governing Instrument, entitled to the same limitation of personal liability extended to stockholders of private corporations for profit organized under the General Corporation Law of the State of Delaware; provided, however, that we express no opinion with respect to the liability of any holder of Common Shares who is, was or may become a named Trustee of the Trust.

4. The Preferred Shares have been duly authorized for issuance by the Trust and, when issued and delivered against payment therefor in accordance with the terms, conditions,

A-5

requirements and procedures set forth in the Underwriting Agreement, will be validly issued and, subject to the qualifications below, fully paid and non-assessable beneficial interests in the Preferred Series. The holders of Preferred Shares will be, subject to the terms of the Governing Instrument, entitled to the same limitation of personal liability extended to stockholders of private corporations for profit organized under the General Corporation Law of the State of Delaware; provided, however, that we express no opinion with respect to the liability of any holder of Preferred Shares who is, was or may become a named Trustee of the Trust.

5. Under the Governing Instrument and the Delaware Act, the issuance of the Preferred Shares is not subject to preemptive rights.

6. The form of Preferred Shares Certificate complies with all applicable requirements of the Delaware Act.

7. No authorization, approval, consent or order of any governmental authority or agency of the State of Delaware or, based solely on the Docket Search, an order of any Delaware Court, is required to be obtained by the Trust solely as a result of the issuance and sale of the Preferred Shares, the consummation by the Trust of the transactions contemplated by the Underwriting Agreement and the Trust Agreements or the performance by the Trust of its obligations thereunder.

8. The execution and delivery by the Trust of the Underwriting Agreement and the Trust Agreements, the consummation by the Trust of the transactions contemplated by the Underwriting Agreement and the Trust Agreements, the performance by the Trust of its obligations thereunder and the issuance and sale by the Trust of the Preferred Shares will not violate (i) the Certificate, the By-laws or the Governing Instrument or (ii) any applicable Delaware law or administrative regulation.

9. Based solely on the Docket Search, there is not in any Delaware Court any action, suit or proceeding pending against the Trust.

A-6

Appendix B

[Form of Vedder, Price, Kaufman & Kammholz, P.C. Opinion]

1. The Adviser is validly existing as a corporation in good standing under the laws of the State of Illinois.

2. The Adviser has full corporate power and authority to own, lease and operate its properties and to conduct its business as described in the Prospectus and to enter into and perform its obligations under the Underwriting Agreement and the Management Agreement.

3. The Adviser is registered with the Commission as an investment adviser under the Advisers Act and is not prohibited by the Advisers Act, the Advisers Act Rules and Regulations, the 1940 Act or the 1940 Act Rules and Regulations from acting under the Management Agreement as contemplated by the Prospectus.

4. The Underwriting Agreement and the Management Agreement have been duly authorized by all requisite corporate action on the part of the Adviser, have each been duly executed and delivered on behalf of the Adviser, and the Management Agreement constitutes a valid and binding obligation of the Adviser, enforceable against the Adviser in accordance with its terms.

5. To the best of our knowledge, there is not pending or threatened in writing any action, suit, proceeding, inquiry or investigation, to which the Adviser is a party, or to which the property of the Adviser is subject, before or brought by any court or governmental agency or body, which might reasonably be expected to (i) result in any material adverse change in the condition, financial or otherwise, earnings, business affairs or business prospects of the Adviser, (ii) materially and adversely affect the properties or assets of the Adviser or (iii) materially impair or adversely affect the ability of the Adviser to function as an investment adviser or

B-1

perform its obligations under the Management Agreement, or which is required to be disclosed in the Registration Statement or the Prospectus.

6. No filing with, or authorization, approval, consent, license, order, registration, qualification or decree of, any court or governmental authority or agency of the United States of America or the State of Illinois (other than (i) under the 1933 Act, the 1940 Act and the Rules and Regulations; (ii) such as have been obtained; and (iii) as may be required under the securities or blue sky laws of the various states, as to each of which we express no opinion) is necessary or required in connection with the performance by the Adviser of its obligations under the Underwriting Agreement and the Management Agreement.

7. The execution and delivery of the Underwriting Agreement and the Management Agreement by the Adviser, and performance by the Adviser of its obligations thereunder do not and will not, whether with or without the giving of notice or lapse of time or both: (A) result in the creation or imposition of any lien, charge or encumbrance upon any property or assets of the Adviser, or (B) violate or constitute a breach of, or default under any material contract, indenture, mortgage, deed of trust, loan or credit agreement, note, lease or any other material agreement or instrument known to us and to which the Adviser is a party or by which it may be bound, or to which any of the property or assets of the Adviser is subject, or (C) violate any applicable federal or State of Illinois law, statute, rule, regulation, or any judgment, order, writ or decree, known to us, of any governmental authority or administrative agency of the United States of America or the State of Illinois (except in each case for such violations, breaches or defaults or liens, charges or encumbrances that would not have a material adverse effect on the ability of the Adviser to perform its obligations under the Management Agreement) nor will such action result in any violation of the provisions of the Organizational Documents of the Adviser.

B-2

EXHIBIT h.2

MASTER SELECTED DEALER AGREEMENT

July 1, 1999

Ladies and Gentlemen:

In connection with registered public offerings of securities for which we are acting as manager or co-manager of an underwriting syndicate or unregistered offerings of securities for which we are acting as manager or co-manager of the initial purchasers, you may be offered the right as a selected dealer to purchase as principal a portion of such securities. This will confirm our mutual agreement as to the general terms and conditions applicable to your participation in any such selected dealer group.

1. APPLICABILITY OF THIS AGREEMENT. The terms and conditions of this Agreement shall be applicable to any offering of securities ("Securities"), whether pursuant to a registration statement filed under the Securities Act of 1933, as amended (the "Securities Act"), or exempt from registration thereunder, in respect of which Salomon Smith Barney Inc. (acting for its own account or for the account of any underwriting or similar group or syndicate) is responsible for managing or otherwise implementing the sale of the Securities to selected dealers ("Selected Dealers") and has expressly informed you that such terms and conditions shall be applicable. Any such offering of Securities to you as a Selected Dealer is hereinafter called an "Offering". In the case of any Offering where we are acting for the account of any underwriting or similar group or syndicate ("Underwriters"), the terms and conditions of this Agreement shall be for the benefit of, and binding upon, such Underwriters, including, in the case of any Offering where we are acting with others as representatives of Underwriters, such other representatives.

2. CONDITIONS OF OFFERING; ACCEPTANCE AND PURCHASES. Any Offering will be subject to delivery of the Securities and their acceptance by us and any other Underwriters, may be subject to the approval of all legal matters by counsel and the satisfaction of other conditions, and may be made on the basis of reservation of Securities or an allotment against subscription. We will advise you by telecopy, telex or other form of written communication ("Written Communication", which term, in the case of any Offering described in Section 3(a) or 3(b) hereof, may include a prospectus or offering circular) of the particular method and supplementary terms and conditions (including, without limitation, the information as to prices and the offering date referred to in
Section 3(c) hereof) of any Offering in which you are invited to participate. To the extent such supplementary terms and conditions are inconsistent with any provision herein, such terms and conditions shall supersede any such provision. Unless otherwise indicated in any such Written Communication, acceptances and other communications


by you with respect to an Offering should be sent to the appropriate Syndicate Department of Salomon Smith Barney Inc. We may close the subscription books at any time in our sole discretion without notice, and we reserve the right to reject any acceptance in whole or in part.

Unless notified otherwise by us, Securities purchased by you shall be paid for on such date as we shall determine, on one day's prior notice to you, by wire transfer payable in immediately available funds to the order of Salomon Smith Barney Inc., in an amount equal to the Public Offering Price (as hereinafter defined) or, if we shall so advise you, at such Public Offering Price less the Concession (as hereinafter defined). If Securities are purchased and paid for at such Public Offering Price, such Concession will be paid after the termination of the provisions of Section 3(c) hereof with respect to such Securities. Unless notified otherwise by us, payment for and delivery of Securities purchased by you shall be made through the facilities of The Depository Trust Company, if you are a member, unless you have otherwise notified us prior to the date specified in a Written Communication to you from us or, if you are not a member, settlement may be made through a correspondent who is a member pursuant to instructions which you will send to us prior to such specified date.

3. REPRESENTATIONS, WARRANTIES AND AGREEMENTS.

(a) REGISTERED OFFERINGS. In the case of any Offering of Securities which are registered under the Securities Act ("Registered Offering"), we will make available to you as soon as practicable after sufficient copies are made available to us by the issuer of the Securities such number of copies of each preliminary prospectus and of the final prospectus relating thereto as you may reasonably request for the purposes contemplated by the Securities Act and the Securities Exchange Act of 1934, as amended (the "Exchange Act") and the applicable rules and regulations of the Securities and Exchange Commission thereunder.

You represent and warrant that you are familiar with Rule 15c2-8 under the Exchange Act relating to the distribution of preliminary and final prospectuses and agree that you will comply therewith. You agree to make a record of your distribution of each preliminary prospectus and when furnished with copies of any revised preliminary prospectus, you will promptly forward copies thereof to each person to whom you have theretofore distributed a preliminary prospectus.

You agree that in purchasing Securities in a Registered Offering you will rely upon no statement whatsoever, written or oral, other than the statements in the final prospectus delivered to you by us. You will not be authorized by the issuer or other seller of Securities offered pursuant to a prospectus or by any Underwriters to give any information or to make any representation not contained in the prospectus in connection with the sale of such Securities.

(b) OFFERINGS PURSUANT TO OFFERING CIRCULAR. In the case of any Offering of Securities, other than a Registered Offering, which is made pursuant to an offering circular or other document comparable to a prospectus in a Registered Offering, we will make available to you as soon as practicable after sufficient copies are made available to us by the issuer of the Securities such number of copies of each preliminary offering circular and of the final offering circular relating thereto as you may reasonably request. You agree that you will comply with applicable Federal, state and other laws, and the

2

applicable rules and regulations of any regulatory body promulgated thereunder, governing the use and distribution of offering circulars by brokers or dealers.

You agree that in purchasing Securities pursuant to an offering circular you will rely upon no statements whatsoever, written or oral, other than the statements in the final offering circular delivered to you by us. You will not be authorized by the issuer or other seller of Securities offered pursuant to an offering circular or by any Underwriters to give any information or to make any representation not contained in the offering circular in connection with the sale of such Securities.

(c) OFFER AND SALE TO THE PUBLIC. The Offering of Securities is made subject to the conditions referred to the prospectus or offering circular relating to the Offering and to the terms and conditions set forth in this Agreement. With respect to any Offering of Securities, we will inform you by a Written Communication of the public offering price, the selling concession, the reallowance (if any) to dealers and the time when you may commence selling Securities to the public. After such public offering has commenced, we may change the public offering price, the selling concession and the reallowance to dealers. The offering price, selling concession and reallowance (if any) to dealers at any time in effect with respect to an Offering are hereinafter referred to, respectively, as the "Public Offering Price", the "Concession" and the "Reallowance". With respect to each Offering of Securities, until the provisions of this Section 3(c) shall be terminated pursuant to Section 4 hereof, you agree to offer Securities to the public only at the Public Offering Price, except that if a Reallowance is in effect, a Reallowance from the Public Offering Price not in excess of such Reallowance may be allowed as consideration for services rendered in distribution to dealers who are actually engaged in the investment banking or securities business who are either members in good standing of the NASD who agree to abide by the applicable rules of the NASD (see
Section 3(e) below) or foreign banks, dealers or institutions not eligible for membership in the NASD who represent to you that they will promptly reoffer such Securities at the Public Offering Price and will abide by the conditions with respect to foreign banks, dealers and institutions set forth in Section 3(e) hereof.

(d) OVER-ALLOTMENT; STABILIZATION; UNSOLD ALLOTMENTS. We may, with respect to any Offering, be authorized to over-allot in arranging sales to Selected Dealers, to purchase and sell Securities for long or short account and to stabilize or maintain the market price of the Securities. You agree that upon our request at any time and from time to time prior to the termination of the provisions of Section 3(c) hereof with respect to any Offering, you will report to us the amount of Securities purchased by you pursuant to such Offering which then remain unsold by you and will, upon our request at any such time, sell to us for our account or the account of one or more Underwriters such amount of such unsold Securities as we may designate at the Public Offering Price less an amount to be determined by us not in excess of the Concession. If, prior to the later of (a) the termination of the provisions of Section 3(c) hereof with respect to any Offering, or (b) the covering by us of any short position created by us in connection with such Offering for our account or the account of one or more Underwriters, we purchase or contract to purchase for our account or the account of one or more Underwriters in the open market or otherwise any Securities purchased by you under this Agreement as part of such Offering, you agree to pay us on demand for the account of the Underwriters an amount equal to the Concession with respect to such Securities (unless you shall have purchased such Securities pursuant to Section 2 hereof at the Public Offering Price and you have not received or been credited with any Concession, in which case we shall not

3

be obligated to pay such Concession to you pursuant to Section 2) plus transfer taxes and broker's commissions or dealer's mark-up, if any, paid in connection with such purchase or contract to purchase.

(e) NASD. You represent and warrant that you are actually engaged in the investment banking or securities business and either are a member in good standing of the NASD or, if you are not such a member, you are a foreign bank, dealer or institution not eligible for membership in the NASD which agrees to make no sales within the United State, its territories or its possessions or to persons who are citizens thereof or residents therein, and in making other sales to comply with the NASD's interpretation with respect to free-riding and withholding. You further represent, by your participation in an Offering, that you have provided to us all documents and other information required to be filed with respect to you, any related person or any person associated with you or any such related person pursuant to the supplementary requirements of the NASD's interpretation with respect to review of corporate financing as such requirements relate to such Offering.

You agree that, in connection with any purchase or sale of the Securities wherein a selling concession, discount or other allowance is received or granted, you will (a) if you are a member of the NASD, comply with all applicable interpretive material ("IM") and Conduct Rules of the NASD, including, without limitation, IM 2110-1 (relating to Free-Riding and Withholding) and Conduct Rule 2740 (relating to Selling Concessions, Discounts and Other Allowances) or (b) if you are a foreign bank or dealer or institution not eligible for such membership, comply with IM 2110-1 and with Conduct Rules 2730 (relating to Securities Taken in Trade), 2740 (relating to Selling Concessions) and 2750 (relating to Transactions With Related Persons) as though you were such a member and Conduct Rule 2420 (relating to Dealing with Non-Members) as it applies to a non-member broker or dealer in a foreign country.

You further agree that, in connection with any purchase of securities from us that is not otherwise covered by the terms of this Agreement (whether we are acting as manager, as member of an underwriting syndicate or a selling group or otherwise), if a selling concession, discount or other allowance is granted to you, clauses (a) and (b) of the preceding paragraph will be applicable.

(f) RELATIONSHIP AMONG UNDERWRITERS AND SELECTED DEALERS. We may buy Securities from or sell Securities to any Underwriter or Selected Dealer and, with our consent, the Underwriters (if any) and the Selected Dealers may purchase Securities from and sell Securities to each other at the Public Offering Price less all or any part of the Concession. We shall have full authority to take such action as we deem advisable in all matters pertaining to any Offering under this Agreement. You are not authorized to act as agent for us, any Underwriter or the issuer or other seller of any Securities in offering Securities to the public or otherwise. Neither we nor any Underwriter shall be under any obligation to you except for obligations assumed hereby or in any Written Communication from us in connection with any Offering. Nothing contained herein or in any Written Communication from us shall constitute the Selected Dealers an association or partners with us or any Underwriter or with one another. If the Selected Dealers, among themselves or with the Underwriters, should be deemed to constitute a partnership for Federal income tax purposes, then you elect to be excluded from the application of Subchapter K, Chapter 1, Subtitle A of the Internal Revenue Code of 1986 and agree not to take any position inconsistent with that election. You authorize us, in

4

our discretion, to execute and file on your behalf such evidence of that election as may be required by the Internal Revenue Service. In connection with any Offering you shall be liable for your proportionate amount of any tax, claim, demand or liability that may be asserted against you alone or against one or more Selected Dealers participating in such Offering, or against us or the Underwriters, based upon the claim that the Selected Dealers, or any of them constitute an association, an unincorporated business or other entity, including, in each case, your proportionate amount of any expense incurred in defending against any such tax, claim, demand or liability.

(g) BLUE SKY LAWS. Upon application to us, we shall inform you as to any advice we have received from counsel concerning the jurisdictions in which Securities have been qualified for sale or are exempt under the securities or blue sky laws of such jurisdictions, but we do not assume any obligation or responsibility as to your right to sell Securities in any such jurisdiction.

(h) COMPLIANCE WITH LAW. You agree that in selling Securities pursuant to any Offering (which agreement shall also be for the benefit of the issuer or other seller of such Securities), you will comply with all applicable laws, rules and regulations, including the applicable provisions of the Securities Act and the Exchange Act, the applicable rules and regulations of the Securities and Exchange Commission thereunder, the applicable rules and regulations of the NASD, the applicable rules and regulations of any securities exchange or other regulatory authority having jurisdiction over the Offering and the applicable laws, rules and regulations specified in Section 3(b) hereof. Without limiting the foregoing, (a) you agree that, at all times since you were invited to participate in an Offering of Securities, you have complied with the provisions of Regulation M applicable to such Offering, in each case after giving effect to any applicable exemptions and (b) you represent that your incurrence of obligations hereunder in connection with any Offering of Securities will not result in the violation by you of Rule 15c3-1 under the Exchange Act, if such requirements are applicable to you.

4. TERMINATION; SUPPLEMENTS AND AMENDMENTS. This Agreement shall continue in full force and effect until terminated by a written instrument executed by each of the parties hereto. This Agreement may be supplemented or amended by us by written notice thereof to you, and any such supplement or amendment to this Agreement shall be effective with respect to any Offering to which this Agreement applies after the date of such supplement or amendment. Each reference to "this Agreement" herein shall, as appropriate, be to this Agreement as so amended and supplemented. The terms and conditions set forth in Section 3(c) hereof with regard to any Offering will terminate at the close of business on the 30th day after the commencement of the public offering of the Securities to which such Offering relates, but in our discretion may be extended by us for a further period not exceeding 30 days and in our discretion, whether or not extended, may be terminated at any earlier time.

5. SUCCESSORS AND ASSIGNS. This Agreement shall be binding on, and inure to the benefit of, the parties hereto and other persons specified in Section 1 hereof, and the respective successors and assigns of each of them.

6. GOVERNING LAW. This Agreement and the terms and conditions set forth herein with respect to any Offering together with such supplementary terms and conditions with respect to such Offering as may be contained in any Written Communication from us to you in connection therewith shall be governed by, and construed in accordance with, the

5

laws of the State of New York applicable to contracts made and to be performed within the State of New York.

Please confirm by signing and returning to us the enclosed copy of this Agreement that your subscription to or your acceptance of any reservation of any Securities pursuant to an Offering shall constitute (i) acceptance of and agreement to the terms and conditions of this Agreement (as supplemented and amended pursuant to Section 4 hereof; together with and subject to any supplementary terms and conditions contained in any Written Communication from us in connection with such Offering, all of which shall constitute a binding agreement between you and us, individually or as representative of any Underwriters, (ii) confirmation that your representations and warranties set forth in Section 3 hereof are true and correct at that time, (iii) confirmation that your agreements set forth in Sections 2 and 3 hereof have been and will be fully performed by you to the extent and at the times required thereby and (iv) in the case of any Offering described in Section 3(a) or 3(b) hereof, acknowledgment that you have requested and received from us sufficient copies of the final prospectus or offering circular, as the case may be, with respect to such Offering in order to comply with your undertakings in Section 3(a) or 3(b) hereof.

Very truly yours,

SALOMON SMITH BARNEY INC.

By:

Name:


Title:

CONFIRMED:..............................1999

............................................


(Name of Dealer)

by:.........................................
Name:
Title:

Address:


Telephone:

Fax:

6

EXHIBIT h.3

MASTER AGREEMENT AMONG UNDERWRITERS

REGISTERED SEC OFFERINGS
(INCLUDING MULTIPLE SYNDICATE OFFERINGS),
STANDBY UNDERWRITINGS AND EXEMPT OFFERINGS
(OTHER THAN OFFERINGS OF MUNICIPAL SECURITIES)

July 1, 1999

Ladies and Gentlemen:

From time to time SALOMON SMITH BARNEY INC. ("SALOMON SMITH BARNEY") may invite you (and others) to participate on the terms set forth herein as an underwriter or an initial purchaser, or in a similar capacity, in connection with certain offerings of securities that are managed solely by us or with one or more other co-managers. If we invite you to participate in a specific offering and sale (an "OFFERING") to which this Master Agreement Among Underwriters (the "SALOMON SMITH BARNEY MASTER AAU") shall apply, we will send the information set forth below in Section 1.1 to you by one or more wires, telexes, facsimile or electronic data transmissions or other written communications (each a "WIRE" and collectively, an "AAU"). Each Wire will indicate that it is a Wire pursuant to the SALOMON SMITH BARNEY MASTER AAU. The Wire inviting you to participate in an Offering is referred to herein as the "INVITATION WIRE". You and we hereby agree that by the terms hereof the provisions of this SALOMON SMITH BARNEY MASTER AAU automatically shall be incorporated by reference in each AAU, EXCEPT THAT ANY SUCH AAU MAY ALSO EXCLUDE OR REVISE ANY PROVISION OF THIS SALOMON SMITH BARNEY MASTER AAU OR MAY CONTAIN SUCH ADDITIONAL PROVISIONS AS MAY BE SPECIFIED IN SUCH AAU.

I. GENERAL

1.1. TERMS OF AAU; CERTAIN DEFINITIONS; CONSTRUCTION. Each AAU shall relate to an Offering and shall identify (i) the securities to be offered in the Offering (the "SECURITIES"), their principal terms, the issuer or issuers (each an "ISSUER") and any guarantor (each a "GUARANTOR") thereof and, if different from the Issuer, the seller or sellers (each a "SELLER") of the Securities, (ii) the underwriting agreement, purchase agreement, standby underwriting agreement, distribution agreement or similar agreement (as identified in such AAU and as amended or supplemented, including a terms agreement or pricing agreement pursuant to any of the foregoing, collectively, the "UNDERWRITING AGREEMENT") providing for the purchase, on a several and not joint basis, of the Securities by the several underwriters, initial purchasers or others acting in a similar capacity on whose behalf the Manager (as defined below) executes the


Underwriting Agreement (including the Manager and the Co-Managers (as defined below), the "UNDERWRITERS"), (iii) if applicable, that the Underwriting Agreement includes an option (an "OVER-ALLOTMENT OPTION") to purchase Additional Securities (as defined below) to cover over-allotments, if any, (iv) if applicable, that the Offering is part of an offering that includes concurrent offerings by two or more syndicates (an "INTERNATIONAL OFFERING"), each of which will offer and sell Securities subject to such restrictions as shall be specified in any Intersyndicate Agreement (as defined below) referred to in such AAU, (v) the price at which the Securities are to be purchased by the several Underwriters from any Issuer or Seller thereof (the "PURCHASE PRICE"), (vi) the offering terms, including, if applicable, the price or prices at which the Securities initially will be offered by the Underwriters (the "OFFERING PRICE"), any selling concession to dealers (the "SELLING CONCESSION"), reallowance (the "REALLOWANCE"), management fee, global coordinators' fee, praecipium or other similar fees, discounts or commissions (collectively, the "FEES AND COMMISSIONS") with respect to the Securities, (vii) the proposed pricing date ("PRICING DATE") and settlement date (the "SETTLEMENT DATE"), (viii) any contractual restrictions on the offer and sale of the Securities pursuant to the Underwriting Agreement, Intersyndicate Agreement or otherwise, (ix) any co-managers for such Offering (the "CO-MANAGERS"), (x) your proposed participation in the Offering, (xi) if applicable, the trustee, fiscal agent or similar agent (the "TRUSTEE") for the indenture, trust agreement, fiscal agency agreement or similar agreement (the "INDENTURE") under which such Securities will be issued and (xii) any other principal terms of the Offering.

The term "MANAGER" means SALOMON SMITH BARNEY. The term "UNDERWRITERS" includes the Manager and the Co-Managers. The term "FIRM SECURITIES" means the number or amount of Securities that the several Underwriters are initially committed to purchase under the Underwriting Agreement (which may be expressed as a percentage of an aggregate number or amount of Securities to be purchased by the Underwriters as in the case of a standby Underwriting Agreement). The term "ADDITIONAL SECURITIES" means the Securities, if any, that the several Underwriters have an option to purchase under the Underwriting Agreement to cover over-allotments, if any. The number, amount or percentage of Firm Securities set forth opposite each Underwriter's name in the Underwriting Agreement plus any additional Firm Securities that such Underwriter has become obligated to purchase under the Underwriting Agreement or Article XI hereof is hereinafter referred to as the "ORIGINAL PURCHASE OBLIGATION" of such Underwriter and the ratio which such Original Purchase Obligation bears to the total of all Firm Securities set forth in the Underwriting Agreement (or, in the case of a standby Underwriting Agreement, to 100%) is hereinafter referred to as the "UNDERWRITING PERCENTAGE" of such Underwriter.

References herein to statutory sections, rules, regulations, forms and interpretive materials shall be deemed to include any successor provisions.

1.2. ACCEPTANCE OF AAU. You shall have accepted an AAU for an Offering if we receive your acceptance, prior to the time specified in the Invitation Wire for such Offering, by wire, telex, facsimile or electronic data transmission or other written communication (any such manner of communication being deemed "IN WRITING") (or

2

orally, if promptly confirmed In Writing) in the manner specified in the Invitation Wire, of our invitation to participate in the Offering. If we receive your timely acceptance of the invitation to participate, such AAU shall constitute a valid and binding contract between us. Your acceptance of the Invitation Wire shall also constitute acceptance by you of the terms of subsequent Wires to you relating to the Offering unless we receive In Writing, within the time and in the manner specified in such subsequent Wire, a notice from you to the effect that you do not accept the terms of such subsequent Wire, in which case you shall be deemed to have elected not to participate in the Offering.

1.3. UNDERWRITERS' QUESTIONNAIRE. Your acceptance of the Invitation Wire shall confirm that you have no exceptions to the Underwriters' Questionnaire attached as Exhibit A hereto (or to any other questions addressed to you in any Wires relating to the Offering previously sent to you), other than exceptions noted by you In Writing in connection with the Offering and received from you by us before the time specified in the Invitation Wire or any subsequent Wire.

II. OFFERING MATERIALS

2.1. REGISTERED OFFERINGS. In the case of an Offering that will be registered in whole or in part (a "REGISTERED OFFERING") under the United States Securities Act of 1933, as amended (the "1933 ACT"), you understand that the Issuer has filed with the Securities and Exchange Commission (the "COMMISSION") a registration statement including a prospectus relating to the Securities. The term "REGISTRATION STATEMENT" means such registration statement as amended or deemed to be amended to the effective date of the Underwriting Agreement and, in the event that the Issuer files an abbreviated registration statement to register additional Securities pursuant to Rule 462(b) under the 1933 Act, such abbreviated registration statement. The term "PROSPECTUS" means the prospectus, together with the final prospectus supplement, if any, relating to the Offering first used to confirm sales of Securities and, in the case of a Registered Offering that is an International Offering, the term "PROSPECTUS" shall mean, collectively, each prospectus or offering circular, together with each final prospectus supplement or final offering circular supplement, if any, relating to the Offering, in the respective forms first used or made available for use to confirm sales of Securities. The term "PRELIMINARY PROSPECTUS" means any preliminary prospectus relating to the Offering or any preliminary prospectus supplement together with a prospectus relating to the Offering and, in the case of a Registered Offering that is an International Offering, the term "PRELIMINARY PROSPECTUS" shall mean, collectively, each preliminary prospectus or preliminary offering circular relating to the Offering or each preliminary prospectus supplement or preliminary offering circular supplement, together with a prospectus or offering circular, respectively, relating to the Offering. As used herein the terms "REGISTRATION STATEMENT", "PROSPECTUS" and "PRELIMINARY PROSPECTUS" shall include in each case the material, if any, incorporated by reference therein. The Manager will furnish to you, or make arrangements for you to obtain, copies of each Prospectus and Preliminary Prospectus (but excluding for this purpose, unless otherwise required pursuant to regulations under the 1933 Act, documents incorporated therein by reference) as soon as practicable after sufficient quantities thereof have been made available by the Issuer.

3

2.2. UNREGISTERED OFFERINGS. In the case of an Offering other than a Registered Offering, you understand that no registration statement has been filed with the Commission. The term "OFFERING CIRCULAR" means an offering circular or memorandum, if any, or any other written materials authorized by the Issuer to be used in connection with an Offering that is not a Registered Offering. The term "PRELIMINARY OFFERING CIRCULAR" means any preliminary offering circular or memorandum, if any, or any other written preliminary materials authorized by the Issuer to be used in connection with such an Offering. As used herein, the terms "OFFERING CIRCULAR" and "PRELIMINARY OFFERING CIRCULAR" shall include the material, if any, incorporated by reference therein. We will either, as soon as practicable after the later of the date of the Invitation Wire or the date made available to us by the Issuer, furnish to you (or make available for your review in our office) a copy of any Preliminary Offering Circular or any proof or draft of the Offering Circular. In any event, in any Offering involving an Offering Circular, the Manager will furnish to you, or make arrangements for you to obtain, as soon as practicable after sufficient quantities thereof are made available by the Issuer, copies of the final Offering Circular, as amended or supplemented, if applicable (but excluding for this purpose documents incorporated therein by reference).

III. MANAGER'S AUTHORITY

3.1. AUTHORITY OF MANAGER TO DETERMINE FORM OF DOCUMENTS, TERMS OF OFFERING, ETC. You authorize the Manager to act as lead manager of the Offering of the Securities by the Underwriters (the "UNDERWRITERS' SECURITIES") or by the Issuer or Seller pursuant to delayed delivery contracts (the "CONTRACT SECURITIES"), if any, contemplated by the Underwriting Agreement. You authorize the Manager, on your behalf, (a) to determine the form of the Underwriting Agreement, (b) to execute and deliver the Underwriting Agreement to the Issuer, Guarantor or Seller, (c) to determine the form of any agreement or agreements between or among the syndicates participating in the International Offering of which the Offering is a part (each an "INTERSYNDICATE AGREEMENT"), and (d) to execute and deliver any such Intersyndicate Agreement. You authorize the Manager
(i) to exercise any Over-allotment Option for the purchase any of or all the Additional Securities for the accounts of the several Underwriters pursuant to the Underwriting Agreement, (ii) to agree, on your behalf and on behalf of the Co-Managers, to any addition to, change in or waiver of any provision of, or the termination of, the Underwriting Agreement or any Intersyndicate Agreement (other than an increase in the Purchase Price or in your Original Purchase Obligation to purchase Securities, in either case from that contemplated by the applicable AAU), (iii) to add or remove prospective Underwriters to or from the syndicate, (iv) to exercise, in the Manager's discretion, all the authority vested in the Manager in the Underwriting Agreement and (v) except as described below in this Section 3.1, to take any other action as may seem advisable to the Manager in respect of the Offering (including, without limitation, actions and communications with the Commission, the National Association of Securities Dealers, Inc. (the "NASD"), state blue sky or securities commissions, stock exchanges and other regulatory bodies or organizations). If, in accordance with the terms of the applicable AAU, the Offering of the Securities is at varying prices based on prevailing market prices or prices related to prevailing market

4

prices or at negotiated prices, you authorize the Manager to determine, on your behalf in the Manager's discretion, any Offering Price and the Fees and Commissions applicable to the Offering from time to time. You authorize the Manager on your behalf to arrange for any currency transactions (including forward and hedging currency transactions) as the Manager deems necessary to facilitate settlement of the purchase of the Securities, but you do not authorize the Manager on your behalf to engage in any other forward or hedging transactions in connection with the Offering unless such transactions are specified in an applicable AAU or are otherwise consented to by you. You further authorize the Manager, subject to the provisions of Section 1.2 hereof, (i) to vary the offering terms of the Securities in effect at any time, including, if applicable, the Offering Price and Fees and Commissions set forth in the applicable AAU, (ii) to determine, on your behalf, the Purchase Price and (iii) to increase or decrease the number, amount or percentage of Securities being offered. Notwithstanding the foregoing provisions of this Section 3.1, the Manager shall notify the Underwriters, prior to the signing of the Underwriting Agreement, of any provision in the Underwriting Agreement that could result in an increase in the amount or percentage of Firm Securities set forth opposite each Underwriter's name in the Underwriting Agreement by more than 25% (or such other percentage as shall have been specified in the applicable Invitation Wire or otherwise consented to by you) as a result of the failure or refusal of another Underwriter or Underwriters to perform its or their obligations thereunder.

3.2. OFFERING DATE. The Offering is to be made as soon after the Underwriting Agreement is entered into by the Issuer, Guarantor or Seller and the Manager as in the Manager's judgment is advisable, on the terms and conditions set forth in the Prospectus or the Offering Circular, as the case may be, and the applicable AAU. You agree not to sell any Securities prior to the time the Manager releases such Securities for sale to purchasers. The date on which such Securities are released for sale is referred to herein as the "OFFERING DATE".

3.3. ADVERTISING; SUPPLEMENTAL OFFERING MATERIAL. Any public advertisement of the Offering shall be made by the Manager on behalf of the Underwriters on such date as the Manager shall determine. You agree not to advertise the Offering prior to the date of the Manager's advertisement thereof without the Manager's consent. If the offering is made in whole or in part in reliance on Rule 144A (or upon another exemption from registration), you agree not to engage in any general solicitation and to abide by any other restrictions in the AAU or the Underwriting Agreement in connection therewith relating to any advertising or publicity. Any advertisement you may make of the Offering after such date will be your own responsibility and at your own expense and risk. In addition to your agreement to comply with restrictions on the Offering pursuant to Sections 10.10 and 10.11 hereof, you also agree that you will not, in connection with the offer and sale of the Securities in the Offering, without the consent of the Manager, give to any prospective purchaser of the Securities or other person not in your employ any written information concerning the Offering, the Issuer, the Guarantor or the Seller, other than information contained in any Preliminary Prospectus, Prospectus, Preliminary Offering Circular or Offering Circular or in any computational materials ("COMPUTATIONAL MATERIALS") or other offering materials prepared by or with the consent of the Manager for use by the Underwriters in

5

connection with the Offering and, in the case of a Registered Offering, filed with the Commission or the NASD, as applicable (the "SUPPLEMENTAL OFFERING MATERIALS"). You further agree to cease distribution of any COMPUTATIONAL MATERIALS on the Offering Date.

3.4. INSTITUTIONAL AND RETAIL SALES. You authorize the Manager to sell to institutions or retail purchasers such Securities purchased by you pursuant to the Underwriting Agreement as the Manager shall determine. The Selling Concession on any such sales shall be credited to the accounts of the Underwriters as the Manager shall determine.

3.5. SALES TO DEALERS. You authorize the Manager to sell to Dealers (as defined below) such Securities purchased by you pursuant to the Underwriting Agreement as the Manager shall determine. A "DEALER" shall be a person who is
(a) a broker or dealer (as defined in the By-Laws of the NASD) actually engaged in the investment banking or securities business and (i) a member in good standing of the NASD or (ii) a foreign bank, broker, dealer or other institution not eligible for membership in the NASD that, in the case of either clause
(a)(i) or (a)(ii), makes the representations and agreements applicable to such institutions contained in Section 10.6 hereof or (b) in the case of Offerings of Securities that are exempt securities under Section 3(a)(12) of the Securities Exchange Act of 1934, as amended (the "1934 ACT"), and such other Securities as from time to time may be sold by a "bank" (as defined in Section 3(a)(6) of the 1934 Act (a "BANK")), a Bank that is not a member of the NASD and that makes the representations and agreements applicable to such institutions contained in
Section 10.6 hereof. If the price for any such sales by the Manager to Dealers exceeds an amount equal to the Offering Price less the Selling Concession set forth in the applicable AAU, the amount of such excess, if any, shall be credited to the accounts of the Underwriters as the Manager shall determine.

3.6. DIRECT SALES. The Manager will advise you promptly, on the date of the Offering, as to the Securities purchased by you pursuant to the Underwriting Agreement that you shall retain for direct sale. At any time prior to the termination of the applicable AAU, any such Securities that are held by the Manager for sale but not sold, may, on your request and at the Manager's discretion, be released to you for direct sale, and Securities so released to you shall no longer be deemed held for sale by the Manager. You may allow, and Dealers may reallow, a discount on sales to Dealers in an amount not in excess of the Reallowance set forth in the applicable AAU. You may not purchase Securities from, or sell Securities to, any other Underwriter or Dealer at any discount or concession other than the Reallowance, except with the consent of the Manager.

3.7. RELEASE OF UNSOLD SECURITIES. From time to time prior to the termination of the applicable AAU, on the request of the Manager, you shall advise the Manager of the amount of Securities remaining unsold which were retained by or released to you for direct sale and of the amount of Securities and Other Securities (as defined below) purchased for your account remaining unsold which were delivered to you pursuant to Article V hereof or pursuant to any Intersyndicate Agreement, and, on the request of the Manager, you shall release to the Manager any such Securities and

6

Other Securities remaining unsold (i) for sale by the Manager to institutions, Dealers or retail purchasers, (ii) for sale by the Issuer or Seller pursuant to delayed delivery contracts or (iii) if, in the Manager's opinion, such Securities or Other Securities are needed to make delivery against sales made pursuant to Article V hereof or any Intersyndicate Agreement.

3.8. INTERNATIONAL OFFERINGS. In the case of an International Offering, you authorize the Manager (i) to make representations on your behalf as set forth in any Intersyndicate Agreement or Underwriting Agreement and (ii) to purchase or sell for your account pursuant to the Intersyndicate Agreement
(a) Securities, (b) any other securities of the same class and series, or any securities into which the Securities may be converted or for which the Securities may be exchanged or exercised and (c) any other securities designated in the applicable AAU or applicable Intersyndicate Agreement (the securities referred to in clauses (b) and (c) above being referred to collectively as the "OTHER SECURITIES").

IV. DELAYED DELIVERY CONTRACTS

4.1. ARRANGEMENTS FOR SALES. You agree that arrangements for sales of Contract Securities will be made only through the Manager acting either directly or through Dealers (including Underwriters acting as Dealers), and you authorize the Manager to act on your behalf in making such arrangements. The aggregate amount of Securities to be purchased by the several Underwriters shall be reduced by the respective amounts of Contract Securities attributed to such Underwriters as hereinafter provided. Subject to the provisions of Section 4.2, the aggregate amount of Contract Securities shall be attributed to the Underwriters as nearly as practicable in their respective Underwriting Percentages, except that, as determined by the Manager in its discretion, (i) Contract Securities directed and allocated by a purchaser to specific Underwriters shall be attributed to such Underwriters and (ii) Contract Securities for which arrangements have been made for sale through Dealers shall be attributed to each Underwriter approximately in the proportion that Securities of such Underwriter held by the Manager for sales to Dealers bear to all Securities so held. The fee with respect to Contract Securities payable to the Manager for the accounts of the Underwriters pursuant to the Underwriting Agreement shall be credited to the accounts of the respective Underwriters in proportion to the Contract Securities attributed to such Underwriters pursuant to the provisions of this Section 4.1, less, in the case of each Underwriter, the concession to Dealers on Contract Securities sold through Dealers and attributed to such Underwriter.

4.2. EXCESS SALES. If the amount of Contract Securities attributable to an Underwriter pursuant to Section 4.1 would exceed such Underwriter's Original Purchase Obligation reduced by the amount of Underwriters' Securities sold by or on behalf of such Underwriter, such excess shall not be attributed to such Underwriter, and such Underwriter shall be regarded as having acted only as a Dealer with respect to, and shall receive only the concession to Dealers on, such excess.

7

V. PURCHASE AND SALE OF SECURITIES; FACILITATION OF DISTRIBUTION

5.1. PURCHASE AND SALE OF SECURITIES; FACILITATION OF DISTRIBUTION. In order to facilitate the distribution and sale of the Securities, you authorize the Manager to buy and sell Securities and any Other Securities, in addition to Securities sold pursuant to Article III hereof, in the open market or otherwise (including, without limitation, pursuant to any Intersyndicate Agreement), for long or short account, on such terms as it shall deem advisable, and to over-allot in arranging sales. Such purchases and sales and over-allotments shall be made for the accounts of the several Underwriters as nearly as practicable in their respective Underwriting Percentages or, in the case of an International Offering, such purchases and sales shall be for such accounts as set forth in the applicable Intersyndicate Agreement. Any securities which may have been purchased by the Manager for stabilizing purposes in connection with the Offering prior to the execution of the applicable AAU shall be treated as having been purchased pursuant to this Section 5.1 for the accounts of the several Underwriters or, in the case of an International Offering, for such accounts as are set forth in the applicable Intersyndicate Agreement. Your net commitment pursuant to the foregoing authorization shall not exceed at the close of business on any day an amount equal to 20% of your Underwriting Percentage of the aggregate initial Offering Price of the Firm Securities, it being understood that, in calculating such net commitment, the initial Offering Price shall be used with respect to the Securities so purchased or sold and, in the case of all Other Securities, shall be the purchase price thereof. Your net commitment for short account (i.e., "naked short") shall be calculated by assuming that all Securities that may be purchased upon exercise of any over-allotment option then exercisable are acquired (whether or not actually acquired) and, in the case of an International Offering, after giving effect to the purchase of any Securities or Other Securities that the Manager has agreed to purchase for your account pursuant to any applicable Intersyndicate Agreement. On demand you shall take up and pay for any Securities or Other Securities so purchased for your account and any Securities released to you pursuant to Section 3.7 hereof and you shall deliver to the Manager against payment any Securities or Other Securities so sold or over-allotted for your account or released to you. The Manager agrees to notify you if it engages in any stabilization transaction requiring reports to be filed pursuant to Rule 17a-2 under the 1934 Act and to notify you of the date of termination of stabilization. You agree not to stabilize or engage in any syndicate covering transaction (as defined in Rule 100 of Regulation M under the 1934 Act ("Regulation M")) in connection with the Offering without the prior consent of the Manager. You further agree to provide to Salomon Smith Barney any reports required of you pursuant to Rule 17a-2 not later than the date specified therein and you authorize Salomon Smith Barney to file on your behalf with the Commission any reports required by such Rule.

If the limitations of Rule 101 of Regulation M ("Rule 101") do not apply to you with respect to the Securities, Other Securities or other reference securities (as defined in Rule 100 of Regulation M) because they satisfy the exception for actively-traded securities in subsection (c)(1) of Rule 101 or the exception for Rule 144A securities in subsection (b)(10) of Rule 101, you agree that promptly upon notice from the Manager (or, if later, at the time stated in the notice) you will comply with Rule 101 as though such exception were not available but the other provisions of Rule 101 (as interpreted by

8

the Commission and after giving effect to any applicable exemptions) did apply. If the securities in question are NASDAQ securities (as defined in Rule 100 of Regulation M) you may engage in passive market making in accordance with Rule 103 of Regulation M (except that the daily net purchase volume limitation will not apply and the maximum displayed bid size shall be 5,000 shares excluding transactions effected in the SOES system) unless the notice from the Manager also states that passive market making is not permitted.

5.2. PENALTY WITH RESPECT TO SECURITIES REPURCHASED BY THE MANAGER. If pursuant to the provisions of Section 5.1 and prior to the termination of the Manager's authority to cover any short position incurred under the applicable AAU or such other date as the Manager shall specify in a Wire, either (A) the Manager purchases or contracts to purchase for the account of any Underwriter in the open market or otherwise any Securities which were retained by, or released to, you for direct sale or any Securities sold pursuant to Section 3.4 for which you received a portion of the Selling Concession set forth in the applicable AAU, or any Securities which may have been issued on transfer or in exchange for such Securities, and which Securities were therefore not effectively placed for investment or (B) if the Manager has advised you by Wire that trading in the Securities will be reported to the Manager pursuant to the "Initial Public Offering Tracking System" of The Depository Trust Company ("DTC") and the Manager determines, based on notices from DTC, that your customers sold an amount of Securities during any day that exceeds the amount previously notified to you by Wire, then you authorize the Manager either to charge your account with an amount equal to such portion of the Selling Concession set forth in the applicable AAU received by you with respect to such Securities or, in the case of clause (B), such Securities as exceed the amount specified in such Wire or to require you to repurchase such Securities or, in the case of clause (B), such Securities as exceed the amount specified in such Wire, at a price equal to the total cost of such purchase, including transfer taxes, accrued interest, dividends and commissions, if any.

5.3. COMPLIANCE WITH REGULATION M. You represent that, at all times since you were invited to participate in the Offering, you have complied with the provisions of Regulation M applicable to such Offering, in each case as interpreted by the Commission and after giving effect to any applicable exemptions. If you have been notified in a Wire that the Underwriters may conduct passive market making in compliance with Rule 103 of Regulation M in connection with the Offering, you represent that, at all times since your receipt of such Wire, you have complied with the provisions of such Rule applicable to such Offering, as interpreted by the Commission and after giving effect to any applicable exemptions.

5.4. STANDBY UNDERWRITINGS. You authorize the Manager in its discretion, at any time on, or from time to time prior to, the expiration of the conversion right of convertible securities identified in the applicable AAU in the case of securities called for redemption, or the expiration of rights to acquire securities in the case of rights offerings, for which, in either case, standby underwriting arrangements have been made: (i) to purchase convertible securities or rights to acquire Securities for your account, in the open market or otherwise, on such terms as the Manager determines and to convert convertible securities or exercise rights so purchased; and (ii) to offer and

9

sell the underlying common stock or depositary shares for your account, in the open market or otherwise, for long or short account (for purposes of such commitment, such common stock or depositary shares being considered the equivalent of convertible securities or rights), on such terms consistent with the terms of the Offering set forth in the Prospectus or Offering Circular as the Manager determines. On demand you shall take up and pay for any securities so purchased for your account or you shall deliver to the Manager against payment any securities so sold, as the case may be. During such period you may offer and sell the underlying common stock or depositary shares, but only at prices set by the Manager from time to time, and any such sales shall be subject to the Manager's right to sell to you the underlying common stock or depositary shares as above provided and to the Manager's right to reserve your Securities purchased, received or to be received upon conversion. You agree not to bid for, purchase, attempt to induce others to purchase, or sell, directly or indirectly, any convertible securities or rights or underlying common stock or depositary shares, provided, however, that no Underwriter shall be prohibited from (a) selling underlying common stock owned beneficially by such Underwriter on the day the convertible securities were first called for redemption, (b) converting convertible securities owned beneficially by such Underwriter on such date or selling underlying common stock issued upon conversion of convertible securities so owned, (c) exercising rights owned beneficially by such Underwriter on the record date for a rights offering or selling the underlying common stock or depositary shares issued upon exercise of rights so owned or (d) purchasing or selling convertible securities or rights or underlying common stock or depositary shares as a broker pursuant to unsolicited orders.

VI. PAYMENT AND SETTLEMENT

6.1. PAYMENT AND SETTLEMENT. You shall deliver to the Manager on the date and at the place and time specified in the applicable AAU (or on such later date and at such place and time as may be specified by the Manager in a subsequent Wire) the funds specified in the applicable AAU, payable to the order of Salomon Smith Barney Inc., for (i) an amount equal to the Offering Price plus (if not included in the Offering Price) accrued interest, amortization of original issue discount or dividends, if any, specified in the Prospectus or Offering Circular, less the applicable Selling Concession in respect of the Firm Securities to be purchased by you, (ii) an amount equal to the Offering Price plus (if not included in the Offering Price) accrued interest, amortization of original issue discount or dividends, if any, specified in the Prospectus or Offering Circular, less the applicable Selling Concession in respect of such of the Firm Securities to be purchased by you as shall have been retained by or released to you for direct sale as contemplated by Section 3.6 hereof or (iii) the amount set forth or indicated in the applicable AAU, as the Manager shall advise. You shall make similar payment as the Manager may direct for Additional Securities, if any, to be purchased by you on the date specified by the Manager for such payment. The Manager will make payment to the Issuer or Seller against delivery to the Manager for your account of the Securities to be purchased by you, and the Manager will deliver to you the Securities paid for by you which shall have been retained by or released to you for direct sale. If the Manager determines that transactions in the Securities are to be settled through the facilities of DTC or other clearinghouse facility, payment for and delivery of Securities

10

purchased by you shall be made through such facilities, if you are a member, or, if you are not a member, settlement shall be made through your ordinary correspondent who is a member.

VII. EXPENSES

7.1. MANAGEMENT FEE. You authorize the Manager to charge your account as compensation for the Manager's and Co-Managers' services in connection with the Offering, including the purchase from the Issuer or Seller of the Securities, as the case may be, and the management of the Offering, the amount, if any, set forth as the management fee, global coordinators fee, praecipium or other similar fee in the applicable AAU. Such amount shall be divided among the Manager and any Co-Managers named in the applicable AAU as they may determine.

7.2. GENERAL EXPENSES. You authorize the Manager to charge your account with your Underwriting Percentage of all expenses of a general nature incurred by the Manager and Co-Managers under the applicable AAU in connection with the Offering, including the negotiation and preparation thereof, or in connection with the purchase, carrying, marketing and sale of any securities under the applicable AAU and any Intersyndicate Agreement, including, without limitation, legal fees and expenses, transfer taxes, costs associated with approval of the Offering by the NASD and the costs of currency transactions (including forward and hedging currency transactions) entered into to facilitate settlement of the purchase of Securities permitted under Section 3.1 hereof.

VIII. MANAGEMENT OF SECURITIES AND FUNDS

8.1. ADVANCES; LOANS; PLEDGES. You authorize the Manager to advance the Manager's own funds for your account, charging current interest rates, or to arrange loans for your account for the purpose of carrying out the provisions of the applicable AAU and any Intersyndicate Agreement and in connection therewith, to hold or pledge as security therefor all or any securities which the Manager may be holding for your account under the applicable AAU and any Intersyndicate Agreement, to execute and deliver any notes or other instruments evidencing such advances or loans and to give all instructions to the lenders with respect to any such loans and the proceeds thereof. The obligations of the Underwriters under loans arranged on their behalf shall be several in proportion to their respective Original Purchase Obligations and not joint. Any lender is authorized to accept the Manager's instructions as to the disposition of the proceeds of any such loans. In the event of any such advance or loan, repayment thereof shall, in the discretion of the Manager, be effected prior to making any remittance or delivery pursuant to Section 8.2, 8.3 or 9.2 hereof.

8.2. RETURN OF AMOUNT PAID FOR SECURITIES. Out of payment received by the Manager for Securities sold for your account which have been paid for by you, the Manager will remit to you promptly an amount equal to the price paid by you for such Securities.

11

8.3. DELIVERY AND REDELIVERY OF SECURITIES FOR CARRYING PURPOSES. The Manager may deliver to you from time to time prior to the termination of the applicable AAU pursuant to Section 9.1 hereof against payment, for carrying purposes only, any Securities or Other Securities purchased by you under the applicable AAU or any Intersyndicate Agreement which the Manager is holding for sale for your account but which are not sold and paid for. You shall redeliver to the Manager against payment any Securities or Other Securities delivered to you for carrying purposes at such times as the Manager may demand.

IX. TERMINATION; INDEMNIFICATION

9.1. TERMINATION. Each AAU shall terminate at the close of business on the later of the date on which the Underwriters pay the Issuer or Seller for the Securities and 45 full days after the applicable Offering Date, unless sooner terminated by the Manager. The Manager may in its discretion by notice to you prior to the termination of such AAU alter any of the terms or conditions of the Offering to the extent permitted by Articles III or IV hereof, or terminate or suspend the effectiveness of Article V hereof, or any part thereof. No termination or suspension pursuant to this paragraph shall affect the Manager's authority under Section 3.1 hereof to take actions in respect of the Offering or under Article V hereof to cover any short position incurred under such AAU or in connection with covering any such short position to require you to repurchase Securities as specified in Section 5.2 hereof.

9.2. DELIVERY OR SALE OF SECURITIES; SETTLEMENT OF ACCOUNTS. Upon termination of each AAU or prior thereto at the Manager's discretion, the Manager shall deliver to you any Securities paid for by you pursuant to Section 6.1 hereof and held by the Manager for sale pursuant to Section 3.4 or 3.5 hereof but not sold and paid for and any Securities or Other Securities that are held by the Manager for your account pursuant to the provisions of Article V hereof or any Intersyndicate Agreement. Notwithstanding the foregoing, at the termination of such AAU, if the aggregate initial Offering Price of any such Securities and the aggregate purchase price of any Other Securities so held and not sold and paid for does not exceed an amount equal to 20% of the aggregate initial Offering Price of the Securities, the Manager may, in its discretion, sell such Securities and Other Securities for the accounts of the several Underwriters, at such prices, on such terms, at such times and in such manner as it may determine. Within the period specified by applicable NASD Rules or, if no period is so specified, as soon as practicable after termination of such AAU, your account shall be settled and paid. The Manager may reserve from distribution such amount as the Manager deems advisable to cover possible additional expenses. The determination by the Manager of the amount so to be paid to or by you shall be final and conclusive. Any of your funds in the Manager's hands may be held with the Manager's general funds without accountability for interest

Notwithstanding any provision of this Master AAU other than Section 10.12, upon termination of each AAU or prior thereto at the Manager's discretion, the Manager (i) may allocate to the accounts of the Underwriters the expenses described in

12

Section 7.2 hereof and any losses incurred upon the sale of Securities or Other Securities pursuant to the applicable AAU or any Intersyndicate Agreement (including any losses incurred upon the sale of securities referred to in
Section 5.4(ii) hereof), (ii) may deliver to the Underwriters any unsold Securities or Other Securities purchased pursuant to Section 5.1 hereof or any Intersyndicate Agreement and (iii) may deliver to the Underwriters any unsold Securities purchased pursuant to the applicable Underwriting Agreement, in each case in the Manager's discretion. The Manager shall have full discretion to allocate expenses and Securities to the accounts of any Underwriter as the Manager decides, except that (a) no Underwriter (other than the Manager or a Co-Manager) shall bear more than its share of such expenses, losses or Securities (such share shall not exceed such Underwriter's Underwriting Percentage and shall be determined pro rata among all such Underwriters based on their Underwriting Percentages), (b) no such Underwriter shall receive Securities that, together with any Securities purchased by such Underwriter pursuant to Section 6.1 (but excluding any Securities that such Underwriter is required to repurchase pursuant to Section 5.2) exceed such Underwriter's Original Purchase Obligation and (c) no Co-Manager shall bear more than its share, as among the Manager and the other Co-Managers, of such expenses, losses or Securities (such share to be determined pro rata among the Manager and all Co-Managers based on (1) their relative Underwriting Percentages as a percentage of the total combined Underwriting Percentages of the Manager and all Co-Managers, or (2) if the Manager so determines, their relative Offering Economics (as hereinafter defined) as a percentage of the combined Offering Economics of the Manager and all Co-Managers together. The Manager's or a Co-Manager's "OFFERING ECONOMICS" equals the sum of its Management Fee Share, its Underwriting Fee Share and its Selling Concession Share (each as hereinafter defined). The Manager's or a Co-Manager's "MANAGEMENT FEE SHARE" is the dollar amount of its share, as agreed among the Manager and any Co-Managers, of the amount payable by all Underwriters to some or all of the Manager and any Co-Manager as a global coordinators' fee, praecipium, management fee or other fee. The Manager's or a Co-Manager's "UNDERWRITING FEE SHARE" is the dollar amount of its Underwriting Percentage of the aggregate initial Offering Price of the Firm Securities less the Purchase Price thereof, less the Selling Concession thereon. The Manager's or a Co-Manager's "SELLING CONCESSION SHARE" is the dollar amount of any Selling Concession credited to it on sales from the institutional pot or on sales made for the account of any other Underwriter. If any Securities or Other Securities returned to you pursuant to clause (ii) or
(iii) above were not paid for by you pursuant to Section 6.1 hereof, you shall pay to the Manager an amount per security equal to the amount set forth in
Section 6.1(i), in the case of Securities returned to you pursuant to clause
(iii) above, or the purchase price of such securities, in the case of Securities or Other Securities returned to you pursuant to clause (ii) above.

9.3. POST-SETTLEMENT EXPENSES. Notwithstanding any settlement on the termination of the applicable AAU, you agree to pay any transfer taxes which may be assessed and paid after such settlement on account of any sales or transfers under such AAU or any Intersyndicate Agreement for your account and your Underwriting Percentage of (i) all expenses incurred by the Manager in investigating, preparing to defend or defending against any action, claim or proceeding which is asserted or instituted by any party (including any governmental or regulatory body) relating to (a) the

13

Registration Statement, any Preliminary Prospectus or Prospectus (or any amendment or supplement thereto), any Preliminary Offering Circular or Offering Circular (or any amendment or supplement thereto) or Supplemental Offering Materials, (b) the violation of any applicable restrictions on the offer, sale, resale or purchase of Securities or Other Securities imposed by United States Federal or state laws or foreign laws and the rules and regulations of any regulatory body promulgated thereunder or pursuant to the terms of such AAU, the Underwriting Agreement or any Intersyndicate Agreement or (c) any claim that the Underwriters constitute a partnership, an association or an unincorporated business or other separate entity and (ii) any liability, including attorneys' fees, incurred by the Manager in respect of any such action, claim or proceeding, whether such liability shall be the result of a judgment or arbitrator's determination or as a result of any settlement agreed to by the Manager, other than any such expense or liability as to which the Manager actually receives indemnity pursuant to Section 9.4, contribution pursuant to
Section 9.5, indemnity or contribution pursuant to the Underwriting Agreement or damages from an Underwriter for breach of its representations, warranties, agreements, or covenants contained in the applicable AAU. None of the foregoing provisions of this Section 9.3 shall relieve any defaulting or breaching Underwriter from liability for its defaults or breach.

9.4. INDEMNIFICATION. You agree to indemnify and hold harmless each other Underwriter and each person, if any, who controls any such Underwriter within the meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act, to the extent and upon the terms which you agree to indemnify and hold harmless any of the Issuer, the Guarantor, the Seller, any person controlling the Issuer, the Guarantor, the Seller, its directors and, in the case of a Registered Offering, its officers who signed the Registration Statement and, in the case of an Offering other than a Registered Offering, its officers, in each case as set forth in the Underwriting Agreement. You further agree to indemnify and hold harmless any investment banking firm identified in a Wire as the qualified independent underwriter as defined in Rule 2720 of the NASD's Conduct Rules ("QIU") for an Offering and each person, if any, who controls such QIU within the meaning of either Section 15 of the 1933 Act or Section 20 of the 1934 Act, from and against any and all losses, claims, damages and liabilities related to, arising out of or in connection with such investment banking firm's activities as QIU for the Offering. You agree with the other Underwriters to reimburse such QIU for all expenses, including fees and expenses of counsel as they are incurred, in connection with investigating, preparing for, or defending any action, claim or proceeding related to, arising out of, or in connection with such QIU's activities as a QIU for the Offering. Each Underwriter shall be responsible for its Underwriting Percentage of any amount due to such QIU on account of the foregoing indemnity. You agree that such QIU shall have no additional liability to any Underwriter or otherwise as a result of its serving as QIU in connection with the Offering. You further agree that to the extent the indemnification provided to a QIU under this Section 9.4 is unavailable to such QIU or insufficient in respect of any losses, claims, damages or liabilities (and expenses relating thereto), whether as a matter of law or public policy or as a result of the default of any Underwriter in performing its obligations under this Section 9.4, you and each other Underwriter shall contribute to the amount paid or payable by such QIU as a result of such losses, claims, damages or liabilities (and expenses relating thereto) in proportion to your Underwriting Percentage.

14

9.5. CONTRIBUTION. Notwithstanding any settlement on the termination of the applicable AAU, you agree to pay upon request of the Manager, as contribution, your Underwriting Percentage of any losses, claims, damages or liabilities, joint or several, paid or incurred by any Underwriter to any person other than an Underwriter, arising out of or based upon any untrue statement or alleged untrue statement of a material fact contained in the Registration Statement, any Preliminary Prospectus or Prospectus (or any amendment or supplement thereto), any Preliminary Offering Circular or Offering Circular (or any amendment or supplement thereto) or Supplemental Offering Materials or the omission or alleged omission to state therein a material fact required to be stated therein or necessary to make the statements therein not misleading (other than an untrue statement or alleged untrue statement or omission or alleged omission made in reliance upon and in conformity with information furnished to the Company in writing by the Underwriter on whose behalf the request for contribution is being made expressly for use therein) and your Underwriting Percentage of any legal or other expenses reasonably incurred by the Underwriter (with the approval of the Manager) on whose behalf the request for contribution is being made in connection with investigating or defending any such loss, claim, damage or liability or any action in respect thereof; provided that no request shall be made on behalf of any Underwriter guilty of fraudulent misrepresentation (within the meaning of Section 11(f) of the 1933 Act) from any Underwriter who was not guilty of such fraudulent misrepresentation. None of the foregoing provisions of this Section 9.5 shall relieve any defaulting or breaching Underwriter from liability for its defaults or breach.

9.6. SEPARATE COUNSEL. If any claim is asserted or action or proceeding commenced pursuant to which the indemnity provided in Section 9.4 may apply, the Manager may take such action in connection therewith as it deems necessary or desirable, including retention of counsel for the Underwriters, and in its discretion separate counsel for any particular Underwriter or group of Underwriters, and the fees and disbursements of any counsel so retained shall be allocated among the several Underwriters as determined by the Manager. Any Underwriter may elect to retain at its own expense its own counsel and, on advice of such counsel but only with the consent of the Manager, may settle or consent to the settlement of any such claim, action or proceeding. The Manager may settle or consent to the settlement of any such claim, action or proceeding. Whenever the Manager receives notice of the assertion of any claim, action or proceeding to which the provisions of Section 9.4 would apply, it will give prompt notice thereof to each Underwriter, and whenever you receive notice of the assertion of any claim or commencement of any action or proceeding to which the provisions of Section 9.4 would apply, you will give prompt notice thereof to the Manager. The Manager also will furnish each Underwriter with periodic reports, at such times as it deems appropriate, as to the status of such claim, action or proceeding, and the action taken by it in connection therewith.

9.7. SURVIVAL OF AGREEMENTS. Regardless of any termination of an AAU, your agreements contained in Article V and Sections 3.1, 9.3, 9.4, 9.5, 9.6 and 11.2 shall remain operative and in full force and effect regardless of (i) any termination of the Underwriting Agreement, (ii) any investigation made by or on behalf of any Underwriter or any person controlling any Underwriter or by or on behalf of the Issuer,

15

the Guarantor, the Seller, its directors or officers or any person controlling the Issuer, the Guarantor or the Seller and (iii) acceptance of any payment for any Securities.

X. REPRESENTATIONS AND COVENANTS OF UNDERWRITERS

10.1. KNOWLEDGE OF OFFERING. You understand that it is your responsibility to examine the Registration Statement, the Prospectus or the Offering Circular, as the case may be, relating to the Offering, any amendment or supplement thereto, any Preliminary Prospectus or Preliminary Offering Circular and the material, if any, incorporated by reference therein and any Supplemental Offering Materials and you will familiarize yourself with the terms of the Securities, any applicable Indenture and the other terms of the Offering thereof which are to be reflected in the Prospectus or the Offering Circular, as the case may be, and the applicable AAU and Underwriting Agreement. The Manager is authorized, with the advice of counsel for the Underwriters, to approve on your behalf any amendments or supplements to the Registration Statement and the Prospectus or the Offering Circular, as the case may be.

10.2. DISTRIBUTION OF MATERIALS. You will keep an accurate record of the names and addresses of all persons to whom you give copies of the Registration Statement, the Prospectus, any Preliminary Prospectus (or any amendment or supplement thereto) or any Offering Circular or any Preliminary Offering Circular and, when furnished with any subsequent amendment to the Registration Statement, any subsequent Prospectus, any subsequent Offering Circular or any memorandum outlining changes in the Registration Statement or any Prospectus or Offering Circular, you will, upon request of the Manager, promptly forward copies thereof to such persons.

10.3. ACCURACY OF UNDERWRITERS' INFORMATION. You confirm that the information that you have given or are deemed to have given in response to the Underwriters' Questionnaire attached as Exhibit A hereto (and to any other questions addressed to you in the Invitation Wire or other Wires), which information has been furnished to the Issuer for use in the Registration Statement and the Prospectus or the Offering Circular, as the case may be, or has otherwise been relied upon in connection with the Offering, is complete and accurate. You shall notify the Manager immediately of any development before the termination of the applicable AAU which makes untrue or incomplete any information that you have given or are deemed to have given in response to the Underwriters' Questionnaire (or such other questions).

10.4. NAME; ADDRESS. Unless you have promptly notified the Manager in writing otherwise, your name as it should appear in the Prospectus or the Offering Circular and any advertisement, if different, and your address are as set forth on the signature pages hereof.

10.5. CAPITAL REQUIREMENTS. You represent that your commitment to purchase the Securities will not result in a violation of the financial responsibility requirements of Rule 15c3-1 under the 1934 Act or of any similar provision of any applicable rules of any securities exchange to which you are subject or, if you are a financial institution subject to regulation by the Board of Governors of the United States

16

Federal Reserve System, the United States Comptroller of the Currency or the United States Federal Deposit Insurance Corporation, will not place you in violation of any applicable capital requirements or restrictions of such regulator or any other regulator to which you are subject.

10.6. COMPLIANCE WITH NASD REQUIREMENTS. You represent that you are a member in good standing of the NASD, a Bank that is not a member of the NASD or a foreign bank or dealer not eligible for membership in the NASD. In making sales of Securities, if you are such a member, you agree to comply with all applicable interpretive material ("IM") and rules of the NASD, including, without limitation, IM-2110-1 (the NASD's interpretation with respect to free-riding and withholding) and Rule 2740 of the NASD's Conduct Rules, or, if you are such a foreign bank or dealer, you agree to comply, as applicable, with IM-2110-1 and Rules 2730, 2740 and 2750 of the NASD's Conduct Rules as though you were such a member and Rule 2420 of the NASD's Conduct Rules as it applies to a nonmember broker or dealer in a foreign country. If you are a Bank, you agree, to the extent required by applicable law or the Conduct Rules of the NASD, that you will not, in connection with the public offering of any Securities that do not constitute "exempted securities" within the meaning of
Section 3(a)(12) of the 1934 Act or such other Securities as from time to time may be sold by a Bank, purchase any Securities at a discount from the Offering Price from any Underwriter or dealer or otherwise accept any Fees and Commissions from any Underwriter or Dealer, and you agree to comply, as applicable, with Rule 2420 of the NASD's Conduct Rules as though you were a member.

10.7. FURTHER STATE NOTICE. The Manager will file a Further State Notice with the Department of State of New York, if required.

10.8. COMPLIANCE WITH RULE 15C2-8. In the case of a Registered Offering and any other Offering to which the provisions of Rule 15c2-8 under the 1934 Act are made applicable pursuant to the AAU or otherwise, you agree to comply with such Rule in connection with the Offering. In the case of an Offering other than a Registered Offering, you agree to comply with applicable Federal and state laws and the applicable rules and regulations of any regulatory body promulgated thereunder governing the use and distribution of offering circulars by underwriters.

10.9. DISCRETIONARY ACCOUNTS. In the case of a Registered Offering of Securities issued by an Issuer that was not, immediately prior to the filing of the Registration Statement, subject to the requirements of Section 13(d) or 15(d) of the 1934 Act, you agree that you will not make sales to any account over which you exercise discretionary authority in connection with such sale except as otherwise permitted by the applicable AAU for such Offering.

10.10. OFFERING RESTRICTIONS. If you are a foreign bank or dealer and you are not registered as a broker-dealer under Section 15 of the 1934 Act, you agree that while you are acting as an Underwriter in respect of the Securities and in any event during the term of the applicable AAU, you will not directly or indirectly effect in, or with persons who are nationals or residents of, the United States, its territories or possessions any transactions (except for the purchases provided for in the Underwriting

17

Agreement and transactions contemplated by Articles III and V hereof) in Securities or any Other Securities.

It is understood that, except as specified in the applicable AAU, no action has been taken by the Manager, the Issuer, the Guarantor or the Seller to permit you to offer Securities in any jurisdiction other than the United States, in the case of a Registered Offering, where action would be required for such purpose.

10.11. REPRESENTATIONS, WARRANTIES AND AGREEMENTS. You agree to make to each other Underwriter participating in an Offering the same representations, warranties and agreements, if any, made by the Underwriters to the Issuer, the Guarantor or the Seller in the applicable Underwriting Agreement or any Intersyndicate Agreement and you authorize the Manager to make such representations, warranties and agreements to the Issuer, the Guarantor or the Seller on your behalf.

10.12. LIMITATION ON THE AUTHORITY OF THE MANAGER TO PURCHASE AND SELL SECURITIES FOR THE ACCOUNT OF CERTAIN UNDERWRITERS. Notwithstanding any provision of this AAU authorizing the Manager to purchase or sell any Securities or Other Securities (including arranging for the sale of Contract Securities) or over-allot in arranging sales of Securities for the accounts of the several Underwriters, the Manager may not, in connection with the Offering of any Securities, make any such purchases, sales and/or over-allotments for the account of any Underwriter that, not later than its acceptance of the Invitation Wire relating to such Offering, has advised the Manager that, due to its status as, or relationship to, a bank or bank holding company such purchases, sales and/or over-allotments are prohibited by applicable law. If any Underwriter so advises the Manager, the Manager may allocate any such purchases, sales and over-allotments (and the related expenses) which otherwise would have been allocated to your account based on your respective Underwriting Percentage to your account based on the ratio of your Original Purchase Obligation to the Original Purchase Obligations of all Underwriters other than the advising Underwriter or Underwriters or in such other manner as the Manager shall determine.

XI. DEFAULTING UNDERWRITERS

11.1. EFFECT OF TERMINATION. If the Underwriting Agreement is terminated as permitted by the terms thereof, your obligations hereunder with respect to the Offering of the Securities shall immediately terminate except (i) as set forth in Section 9.7, (ii) that you shall remain liable for your Underwriting Percentage (or such other percentage as may be specified pursuant to Section 9.2) of all expenses and for any purchases or sales which may have been made for your account pursuant to the provisions of Article V hereof or any Intersyndicate Agreement and (iii) that such termination shall not affect any obligations of any defaulting or breaching Underwriter.

11.2. SHARING OF LIABILITY. If any Underwriter shall default in its obligations (i) pursuant to Section 5.1, 5.2 or 5.4, (ii) to pay amounts charged to its account pursuant to Section 7.1, 7.2 or 8.1 or (iii) pursuant to Section 9.2, 9.3, 9.4, 9.5,

18

9.6 or 11.1, you will assume your proportionate share (determined on the basis of the respective Underwriting Percentages of the non-defaulting Underwriters) of such obligations, but no such assumption shall relieve any defaulting Underwriter from liability to the non-defaulting Underwriters, the Issuer, the Guarantor or the Seller for its default.

11.3. ARRANGEMENTS FOR PURCHASES. The Manager is authorized to arrange for the purchase by others (including the Manager or any other Underwriter) of any Securities not purchased by any defaulting Underwriter in accordance with the terms of the applicable Underwriting Agreement or, if the applicable Underwriting Agreement does not provide arrangements for defaulting Underwriters, in the discretion of the Manager. If such arrangements are made, the respective amounts of Securities to be purchased by the remaining Underwriters and such other person or persons, if any, shall be taken as the basis for all rights and obligations hereunder, but this shall not relieve any defaulting Underwriter from liability for its default.

XII. MISCELLANEOUS

12.1. OBLIGATIONS SEVERAL. Nothing contained in this Salomon Smith Barney Master AAU or any AAU constitutes you partners with the Manager or with the other Underwriters and the obligations of you and each of the other Underwriters are several and not joint. Each Underwriter elects to be excluded from the application of Subchapter K, Chapter 1, Subtitle A, of the United States Internal Revenue Code of 1986, as amended. Each Underwriter authorizes the Manager, on behalf of such Underwriter, to execute such evidence of such election as may be required by the United States Internal Revenue Service.

12.2. LIABILITY OF MANAGER. The Manager shall be under no liability to you for any act or omission except for obligations expressly assumed by the Manager in the applicable AAU.

12.3. TERMINATION OF MASTER AGREEMENT AMONG UNDERWRITERS. This SALOMON SMITH BARNEY Master AAU may be terminated by either party hereto upon five business days' written notice to the other party; provided that with respect to any Offering for which an AAU was sent prior to such notice, this Salomon Smith Barney Master AAU as it applies to such Offering shall remain in full force and effect and shall terminate with respect to such Offering in accordance with Section 9.1 hereof.

12.4. GOVERNING LAW. THIS SALOMON SMITH BARNEY MASTER AAU AND EACH AAU SHALL BE GOVERNED BY AND CONSTRUED IN ACCORDANCE WITH THE LAWS OF THE STATE OF NEW YORK APPLICABLE TO CONTRACTS MADE AND TO BE PERFORMED IN THE STATE OF NEW YORK.

12.5. AMENDMENTS. This Salomon Smith Barney Master AAU may be amended from time to time by consent of the parties hereto. Your consent shall be deemed to have been given to an amendment to this Salomon Smith Barney Master AAU, and such amendment shall be effective, five business days following written notice

19

to you of such amendment if you do not notify Salomon Smith Barney in writing prior to the close of business on such fifth business day that you do not consent to such amendment. Upon effectiveness, the provisions of this Salomon Smith Barney Master AAU as so amended shall apply to each AAU thereafter entered into except as otherwise specifically provided in any such AAU.

12.6. NOTICES. Any notice to any Underwriter shall be deemed to have been duly given if mailed, sent by wire, telex, facsimile or electronic transmission or other written communication or delivered in person to such Underwriter at the address which shall have been provided to Salomon Smith Barney as provided in Section 10.4 hereof. Any such notice shall take effect upon receipt thereof.

Please confirm your acceptance of this Salomon Smith Barney Master AAU by signing and returning to us the enclosed duplicate copy hereof.

Very truly yours,

SALOMON SMITH BARNEY INC.

By:

Name:


Title:

CONFIRMED:..............................1999

............................................


(Name of Underwriter)

By:......................................... Name:
Title:

(If person signing is not an officer or a partner, please attach instrument of authorization)

Address:



Telephone:

Fax:

20

EXHIBIT A
JUNE 1, 1999

SALOMON SMITH BARNEY INC.
UNDERWRITERS' QUESTIONNAIRE

In connection with each Offering covered by the Salomon Smith Barney Inc. Master Agreement Among Underwriters dated June 1, 1999, we confirm that except as set forth in a timely reply by us to the Invitation Wire:

(1) Neither we nor any of our directors, officers or partners have a material relationship (as "material" is defined in Regulation C under the 1933 Act) with the Issuer, the Guarantor or any Seller.

(2) (If the offer and sale of the Securities are to be registered under the 1933 Act pursuant to a Registration Statement on Form S-1 of Form F-1:) Neither we nor any "group" (as that term is used in Section 13(d)(3) of the Securities Exchange Act of 1934, as amended (the "Exchange Act")) of which we are a member is the beneficial owner (determined in accordance with Rule 13d-3 under the Exchange Act) of more than 5% of any class of voting securities of the Issuer or the Guarantor, nor do we have any knowledge that more than 5% of any class of voting securities of the Issuer or the Guarantor is held or to be held subject to any voting trust or other similar agreement.

(3) Other than as may be stated in the Salomon Smith Barney Master Agreement Among Underwriters dated June 1, 1999, the applicable AAU, the Intersyndicate Agreement or dealer agreement, if any, the Prospectus, the Registration Statement or the Offering Circular, we do not know and have no reason to believe that there is an intention to over-allot or that the price of any security may be stabilized to facilitate the offering of the Securities.

(4) Except as described in the Prospectus or Offering Circular, as the case may, be and the Invitation Wire, we do not know of any discounts or commissions to be allowed or paid to dealers, including all cash, securities, contracts or other consideration to be received by any dealer in connection with the sale of the securities.

21

(5) We have not prepared any report or memorandum for external use in connection with the Offering. (If there are any exceptions, (i) furnish four (4) copies of each report and memorandum to Salomon Smith Barney Inc., 388 Greenwich Street, New York, N.Y. 10013, Attention: Investment Banking Department/Transaction Structuring Group, (ii) identify each class of person who received such material and the number of copies distributed to each such class, and (iii) indicate when such distribution commenced and ceased.)

(6) (If the offer and sale of the Securities are to be registered under the 1933 Act pursuant to a Registration Statement on Form S-1 or Form F-1:) We have not within the past twelve months prepared or had prepared for us any engineering, management or similar report or memorandum relating to broad aspects of the business, operations or products of the Issuer or the Guarantor. (The immediately preceding sentence does not apply to reports solely comprised of recommendations to buy, sell or hold the Issuer's or the Guarantor's securities, unless such recommendations have changed within the past six months or to information already contained in documents filed with the Commission. If there are any exceptions, (i) furnish four (4) copies of each report and memorandum to Salomon Smith Barney Inc. 388 Greenwich Street, New York, N.Y. 10013, Attention: Investment Banking Department/Transaction Structuring Group,
(ii) identify each class of persons who received such material and the number of copies distributed to each such class, and (iii) indicate when such distribution commenced and ceased.)

(7) We are not an "affiliate" of the Issuer or the Guarantor for purposes of Rule 2720 of the National Association of Securities Dealers, Inc.'s ("NASD") Conduct Rules. We understand that under Rule 2720 (except as provided in Rule 2720(b)(1)(C) thereof) two entities are "affiliates" of each other if one entity controls, is controlled by, or is under common control with, the second entity and that "control" is presumed to exist if one entity (or, in the case of an NASD member, the entity and all "persons associated with" it (as defined in the NASD By-Laws)) beneficially owns 10% or more of the second entity's outstanding voting securities or, if the second entity is a partnership, if the first entity has a partnership interest in 10% or more of the second entity's distributable profits or losses.

(8) (If the Securities are not investment grade debt securities or preferred stock, or equity securities for which there exists a "bona fide independent market" (as defined in Rule 2720(b)(3) of the NASD's Conduct Rules) or otherwise exempted under Rule 2720(b)(7)(D) of the NASD's Conduct Rules:) We do not have a "conflict of interest" with the Issuer or the Guarantor under Rule 2720 of the NASD's Conduct Rules. In that regard, we specifically confirm that we, our "parent" (as defined in Rule 2720), affiliates and "persons associated with" us (as defined in the NASD By-Laws), in the aggregate do not (i) beneficially own 10% or more of the Issuer's or the Guarantor's "common equity", "preferred equity", or "subordinated debt" (as each such term is defined in Rule 2720), or (ii) in the case of an Issuer or Guarantor which is a partnership, beneficially own a general, limited or special partnership interest in 10% or more

22

of the Issuer's or Guarantor's distributable profits or losses.

(9) (If filing with the NASD is required:) Neither we nor any of our directors, officers, partners or "persons associated with" us (as defined in the NASD By-Laws) nor, to our knowledge, any "related person" (defined by the NASD to include counsel, financial consultants and advisors, finders, members of the selling or distribution group, any NASD member participating in the offering and any other persons associated with or related to and members of the immediate family of any of the foregoing) or any other broker-dealer, (a) within the last 12 months have purchased in private transactions, or intend before, at or within six months after the commencement of the public offering of the Securities to purchase in private transactions, any securities of the Issuer, the Guarantor or any Issuer Related Party (as hereinafter defined), (b) within the last 12 months had any dealings with the Issuer, the Guarantor, any Seller or any subsidiary or controlling person thereof (other than relating to the proposed Underwriting Agreement) as to which documents or information are required to be filed with the NASD pursuant to its Corporate Financing Rule, or (c) during the 12 months immediately preceding the filing of the Registration Statement (or, if there is none, the Offering Circular), have entered into any arrangement which provided or provides for the receipt of any item of value (including, but not limited to, cash payments and expense reimbursements) and/or the transfer of any warrants, options or other securities from the Issuer, the Guarantor or any Issuer Related Party to us or any related person.

(10) (If filing with the NASD is required:) There is no association or affiliation between us and (i) any officer or director of the Issuer, the Guarantor or any Issuer Related Party, or (ii) any securityholder of five percent or more (or, in the case of an initial public offering of equity securities, any securityholder) of any class of securities of the Issuer, the Guarantor or an Issuer Related Party; it being understood that for purposes of paragraph (9) above and this paragraph (10), the term "Issuer Related Party" includes any Seller, any affiliate of the Issuer the Guarantor or a Seller and the officers or general partners, directors, employees and securityholders thereof. (If there are any exceptions, state the identity of the person with whom the association or affiliation exists and, if relevant, the number of equity securities or the face value of debt securities owned by such person, the date such securities were acquired and the price paid for such securities).

(11) (If the Securities are not issued by a real estate investment trust:) No portion of the net offering proceeds from the sale of the Securities will be paid to us or any of our affiliates or "persons associated with" us (as defined in the NASD By-Laws) or members of the immediate family of any such person.

(12) (If the Securities are debt securities and their offer and sale is to be registered under the 1933 Act:) We are not an affiliate (as defined in Rule 0-2 under the Trust Indenture Act of 1939) of the Trustee for the Securities or of its parent, if any. Neither the Trustee nor its parent, if any, nor any of their directors or executive officers is a "director, officer, partner, employee, appointee or

23

representative" of ours (as those terms are defined in the Trust Indenture Act of 1939 or in the relevant instructions to Form T-1). We and our directors, partners, and executive officers, taken as a group, did not on the date specified in the Invitation Wire, and do not, own beneficially 1% or more of the shares of any class of voting securities of the Trustee or of its parent, if any. If we are a corporation, we do not have outstanding and have not assumed or guaranteed any securities issued otherwise than in our present corporate name.

(13) (If the Issuer is a public utility:) We are not a "holding company" or a "subsidiary company" or an "affiliate" of a "holding company" or of a "public-utility company", each as defined in the Public Utility Holding Company Act of 1935.

(14) If we are, or we are affiliated with, a U.S. or non-U.S. bank, we hereby represent that our participation in the offering of the Securities on the terms contemplated in the applicable AAU and the proposed Underwriting Agreement does not contravene any U.S. or state banking law restricting the exercise of securities powers in the United States.

Capitalized terms used but not defined herein shall have the respective meanings given to them in the applicable AAU.

24

EXHIBIT k.2

CALAMOS AUCTION AGENCY AGREEMENT

BASIC TERMS FOR ACTING AS AUCTION AGENT

RELATING TO

AUCTION RATE CUMULATIVE PREFERRED SHARES

__________________, 2003


TABLE OF CONTENTS

                                                                                                               PAGE


1.       DEFINITIONS AND RULES OF CONSTRUCTION...................................................................1
         1.1      Terms Defined by Reference to Statement........................................................1
         1.2      Terms Defined Herein...........................................................................1
         1.3      Rules of Construction..........................................................................2

2.       THE AUCTION.............................................................................................2
         2.1      Purpose; Incorporation by Reference of Auction Procedures and Settlement Procedures............2
         2.2      Preparation of Each Auction; Maintenance of Registry of Beneficial Owners......................3
         2.3      Information Concerning Rates...................................................................5
         2.4      Auction Schedule...............................................................................6
         2.5      Designation of Dividend Period.................................................................7
         2.6      Notice of Auction Results......................................................................8
         2.7      Broker-Dealers.................................................................................8
         2.8      Ownership of Preferred Shares..................................................................9
         2.9      Access to and Maintenance of Auction Records...................................................9
         2.10     Dividend and Redemption Price Deposit..........................................................9

3.       THE AUCTION AGENT AS DIVIDEND AND REDEMPTION PRICE DISBURSING AGENT....................................10

4.       THE AUCTION AGENT AS TRANSFER AGENT AND REGISTRAR......................................................10
         4.1      Issue of Share Certificates...................................................................10
         4.2      Registration of Transfer of Shares............................................................10
         4.3      Removal of Legend on Restricted Shares........................................................10
         4.4      Lost Share Certificates.......................................................................10
         4.5      Disposition of Canceled Certificates; Record Retention........................................11
         4.6      Share Transfer Books..........................................................................11
         4.7      Return of Funds...............................................................................11

5.       REPRESENTATIONS AND WARRANTIES OF THE FUND.............................................................11

6.       THE AUCTION AGENT......................................................................................12
         6.1      Duties and Responsibilities...................................................................12
         6.2      Rights of the Auction Agent...................................................................13
         6.3      Auction Agent's Disclaimer....................................................................14
         6.4      Compensation, Expenses and Indemnification....................................................14

7.       MISCELLANEOUS..........................................................................................14
         7.1      Term of Agreement.............................................................................14
         7.2      Force Majeure.................................................................................15
         7.3      Communications................................................................................15
         7.4      Entire Agreement..............................................................................16
         7.5      Benefits......................................................................................16

i

7.6      Amendment; Waiver.............................................................................16
7.7      Successors and Assigns........................................................................16
7.8      Severability..................................................................................16
7.9      Execution in Counterparts.....................................................................16
7.10     Governing Law.................................................................................16

EXHIBITS

EXHIBIT A  -  Form of Broker-Dealer Agreement
EXHIBIT B  -  Settlement Procedures
EXHIBIT C  -  Form of Notice of Auction Dates
EXHIBIT D  -  Form of Notice of Proposed Designation of Special Dividend Period
EXHIBIT E  -  Form of Notice of Designation of Special Dividend Period

EXHIBIT F - Form of Notice of Determination Not to Designate Special Dividend Period

ii

These basic terms ("Basic Terms") set forth the general terms and conditions pursuant to which a bank or trust company identified in a Request and Acceptance Letter will act as auction agent (an "Auction Agent") for Preferred Shares issued by an investment company registered under the Investment Company Act of 1940, as amended, as further identified by such Request and Acceptance Letter (a "Fund"), for which Calamos Asset Management, Inc. is the investment adviser.

The Fund proposes to issue shares of Preferred Shares pursuant to its Declaration of Trust, as amended or supplemented by the Statement. The Fund desires that the Auction Agent perform certain duties in connection with the Preferred Shares upon the terms and subject to the conditions of the Agreement.

1. Definitions and Rules of Construction

1.1 Terms Defined by Reference to Statement. Capitalized terms not defined herein shall have the respective meanings specified in the Statement.

1.2 Terms Defined Herein. As used herein and in the Settlement Procedures, the following terms shall have the following meanings, unless the context otherwise requires:

(a) "Adviser" shall mean Calamos Asset Management, Inc.

(b) "Agent Member" of any Person shall mean the member of, or participant in, the Securities Depository.

(c) "Agreement" shall mean the Basic Terms, together with the Request and Acceptance Letter relating to one or more series of Preferred Shares.

(d) "Auction" shall have the meaning specified in Section 2.1 hereof.

(e) "Auction Procedures" shall mean the auction procedures constituting Part II of the Statement.

(f) "Authorized Officer" shall mean each Vice President, Assistant Vice President and Assistant Treasurer of the Auction Agent assigned to the Dealing and Trading Group of its Corporate Trust and Division and every other officer or employee of the Auction Agent designated as an "Authorized Officer" for purposes hereof in a written communication to the Fund.

(g) "Broker-Dealer Agreement" shall mean each agreement between the Auction Agent and a Broker-Dealer substantially in the form attached hereto as Exhibit
A.

(h) "Fund Officer" shall mean the officers of the Fund.


(i) "Person" means and includes an individual, a partnership, a corporation, a trust, an unincorporated association, a joint venture or other entity or a government or any agency or political subdivision thereof.

(j) "Preferred Shares" shall mean the Preferred Shares, no par value, of the Fund designated as its "_______" and bearing such further designation as to series as the Board of Trustees of the Fund or any committee thereof shall specify; as set forth in the Request and Acceptance Letter.

(k) "Request and Acceptance Letter" shall mean the letter from the Fund to the Auction Agent pursuant to which the Fund appoints the Auction Agent and the Auction Agent accepts its appointment as auction agent for the Preferred Shares.

(l) "Settlement Procedures" shall mean the Settlement Procedures attached hereto as Exhibit B.

(m) "Statement" shall mean the Statement of Preferences of Preferred Shares, and authorizing the issuance of, one or more series of Preferred Shares, a copy of which is attached to the Request and Acceptance Letter, as the same may be amended, supplemented or modified from time to time.

1.3 Rules of Construction. Unless the context or use indicates another or different meaning or intent, the following rules shall apply to the construction of this Agreement:

(a) Words importing the singular number shall include the plural number and vice versa.

(b) The captions and headings herein are solely for convenience of reference and shall not constitute a part of this Agreement nor shall they affect its meaning, construction or effect.

(c) The words "hereof," "herein," "hereto" and other words of similar import refer to this Agreement as a whole.

(d) All references herein to a particular time of day shall be to New York City time.

2. The Auction

2.1 Purpose; Incorporation by Reference of Auction Procedures and Settlement Procedures.

(a) The Statement provides that the Applicable Rate per annum for each series of Preferred Shares for each Dividend Period after the initial Dividend Period with respect to each series of Preferred Shares shall, except under certain conditions, be equal to the rate per annum that a bank or trust

2

company appointed by the Fund advises has resulted on the Business Day preceding the first day of such Dividend Period from implementation of the Auction Procedures for such series. Each periodic operation of the Auction Procedures is hereinafter referred to as an "Auction." The Board of Trustees has adopted a resolution appointing The Bank of New York as Auction Agent for purposes of the Auction Procedures for each series of the Preferred Shares. The Auction Agent accepts such appointment and agrees to follow the procedures set forth in this Section 2 and the Auction Procedures for the purpose of determining the Applicable Rate for each series of Preferred Shares for each Dividend Period thereof for which the Applicable Rate is to be determined by an Auction.

(b) All of the provisions contained in the Auction Procedures and the Settlement Procedures are incorporated herein by reference in their entirety and shall be deemed to be a part hereof to the same extent as if such provisions were fully set forth herein.

2.2 Preparation of Each Auction; Maintenance of Registry of Beneficial Owners.

(a) Not later than seven days prior to the first Auction Date for any series of Preferred Shares, the Fund shall provide the Auction Agent with a list of the Broker-Dealers. Not later than seven days prior to any Auction Date for any series of Preferred Shares for which any change in such list of Broker-Dealers is to be effective, the Fund will notify the Auction Agent in writing of such change and, if any such change involves the addition of a Broker-Dealer to such list, shall cause to be delivered to the Auction Agent for execution by the Auction Agent a Broker-Dealer Agreement signed by such Broker-Dealer; provided, however, that if the Fund proposes to designate any Special Dividend Period of any series of Preferred Shares pursuant to Section 4 of Part I of the Statement, not later than 11:00 A.M., New York City time, on the Business Day next preceding the Auction next preceding the first day of such Special Dividend Period, upon the written request of the Auction Agent, the Fund shall provide the Auction Agent with a list of the Broker-Dealers for such series. The Auction Agent and the Fund shall have entered into a Broker-Dealer Agreement with each Broker-Dealer prior to the participation of any such Broker-Dealer in any Auction.

(b) In the event that any Auction Date for any series of Preferred Shares shall be changed after the Auction Agent shall have given the notice referred to in clause (vi) or (vii) of paragraph (a) of the Settlement Procedures, or after the notice referred to in Section 2.5(a) hereof, if applicable, the Auction Agent, by such means as the Auction Agent deems practicable, shall give notice of such change to the Broker-Dealers for such series not later than the earlier of 9:15 A.M. on the new Auction Date or 9:15 A.M. on the original Auction Date.

3

(c) (i) The Auction Agent shall maintain a registry of the beneficial owners of the shares of each series of Preferred Shares who shall constitute Existing Holders of shares of such series of Preferred Shares for purposes of Auctions and shall indicate thereon the identity of the respective Broker-Dealer of each Existing Holder, if any, on whose behalf such Broker-Dealer submitted the most recent Order in any Auction which resulted in such Existing Holder continuing to hold or purchasing shares of such series of Preferred Shares. The Auction Agent shall keep such registry current and accurate based on information provided to it by Broker-Dealers. The Fund shall provide or cause to be provided to the Auction Agent at or prior to the Date of Original Issue of each series of Preferred Shares a list of the initial Existing Holders of the shares of each such series, the number of shares purchased by each such Existing Holder and the respective Broker-Dealer of each such Existing Holder or the affiliate thereof through which each such Existing Holder purchased such shares. The Auction Agent may rely upon, as conclusive evidence of the identities of the Existing Holders of shares of any series of Preferred Shares,
(A) such list, (B) the results of Auctions (C) notices from any Broker-Dealer as described in the first sentence of Section 2.2(c)(iii) hereof and (D) the results of any procedures approved by the Fund that have been devised for the purpose of determining the identities of Existing Holders in situations where shares of Preferred Shares may have been transferred without compliance with any restriction on the transfer thereof set forth in the Auction Procedures.

(ii) In the event of any partial redemption of any series of Preferred Shares, the Auction Agent shall, at least two Business Days prior to the next Auction for such series, request each Broker-Dealer to provide the Auction Agent with a list of Persons who such Broker-Dealer believes should remain Existing Holders after such redemption based upon inquiries of those Persons such Broker-Dealer believes are Beneficial Owners as a result of the most recent Auction and with respect to each such Person, the number of shares of Preferred Shares of such series such Broker-Dealer believes are owned by such Person after such redemption. In the absence of receiving any such information from any Broker-Dealer, the Auction Agent may continue to treat the Persons listed in its registry of Existing Holders as the beneficial owner of the number of shares of Preferred Shares of such series shown in such registry.

(iii) The Auction Agent shall be required to register a transfer of shares of Preferred Shares of any series from an Existing Holder of such shares of Preferred Shares only if such transfer is to another Existing Holder, or other Person if permitted by the Fund, and only if such transfer is made (A) pursuant to an Auction, (B) the Auction Agent has been notified in writing (I) in a notice

4

substantially in the form of Exhibit C to the Broker-Dealer Agreements by a Broker-Dealer of such transfer or (II) in a notice substantially in the form of Exhibit D to the Broker-Dealer Agreements by the Broker-Dealer of any Existing Holder, or other Person if permitted by the Fund, that purchased or sold such shares of Preferred Shares in an Auction of the failure of such shares of Preferred Shares to be transferred as a result of such Auction or (C) pursuant to procedures approved by the Fund that have been devised for the purpose of determining the identities of Existing Holders in situations where shares of Preferred Shares may have been transferred without compliance with any restriction on the transfer thereof set forth in the Auction Procedures. The Auction Agent is not required to accept any such notice for an Auction unless it is received by the Auction Agent by 3:00 P.M.

on the Business Day preceding such Auction.

(d) The Auction Agent may, but shall not be obligated to, request the Broker-Dealers, as set forth in the Broker-Dealer Agreements, to provide the Auction Agent with a list of Persons who such Broker-Dealer believes should be Existing Holders based upon inquiries of those Persons such Broker-Dealer believes are Beneficial Owners as a result of the most recent Auction and with respect to each such Person, the number of shares of such series of Preferred Shares such Broker-Dealer believes to be owned by such Person. The Auction Agent shall keep confidential such registry of Existing Holders and shall not disclose the identities of the Existing Holders of such shares of Preferred Shares to any Person other than the Fund and the Broker-Dealer that provided such information; provided, however, that the Auction Agent reserves the right and is authorized to disclose any such information if (a) it is ordered to do so by a court of competent jurisdiction or a regulatory body, judicial or quasi-judicial agency or authority having the authority to compel such disclosure, (b) it is advised by its counsel that its failure to do so would be unlawful or (c) failure to do so would expose the Auction Agent to loss, liability, claim, damage or expense for which it has not received indemnity or security satisfactory to it.

2.3 Information Concerning Rates.

(a) On each Auction Date, the Auction Agent shall determine the AA Financial Commercial Paper Rate or the Treasury Index Rate, as the case may be, and the Maximum Rate. If the AA Financial Commercial Paper Rate or the Treasury Index Rate, as the case may be, is not quoted on an interest basis, if the rate obtained by the Auction Agent is quoted on a discount basis, or if the rate obtained by the Auction Agent is quoted on another basis the Auction Agent shall convert the quoted rate to an interest rate after consultation with the Fund as to the method of such conversion. Not later than 9:30 A.M. on each Auction Date the Auction Agent shall

5

notify the Fund and the Broker-Dealers of the Maximum Rate so determined and the AA Financial Commercial Paper Rate or the Treasury Index Rate, as the case may be, used to make such determination.

(b) If any AA Financial Commercial Paper Rate is to be based on rates supplied by Commercial Paper Dealers and one or more of the Commercial Paper Dealers shall not provide a quotation for the determination of such AA Financial Commercial Paper Rate, the Auction Agent shall promptly notify the Fund so that the Fund can determine whether to select a substitute Commercial Paper Dealer or substitute Commercial Paper Dealers to provide the quotation or quotations not being supplied by any Commercial Paper Dealer or Commercial Paper Dealers. The Fund shall promptly advise the Auction Agent of any such selection.

(c) If any Treasury Index Rate is to be based on rates supplied by U.S. Government Securities Dealers and one or more of the U.S. Government Securities Dealers shall not provide a quotation for the determination of such Treasury Rate, the Auction Agent shall promptly notify the Fund so that the Fund can determine whether to select a Substitute U.S. Government Securities Dealer or Substitute U.S. Government Securities Dealers to provide the quotation or quotations not being supplied by any U.S. Government Securities Dealers. The Fund shall promptly advise the Auction Agent of any such selection.

(d) In the case of a Dividend Default, the Applicable Rate for each Dividend Period commencing during a Default Period will be equal to the Default Rate.

2.4 Auction Schedule. The Auction Agent shall conduct Auctions for each series of Preferred Shares in accordance with the schedule set forth below. Such schedule may be changed by the Auction Agent with the consent of the Fund, which consent shall not be unreasonably withheld or delayed. The Auction Agent shall give written notice of any such change to each Broker-Dealer. Such notice shall be given prior to the close of business on the Business Day next preceding the first Auction Date on which any such change shall be effective.

      Time                                        Event
-------------------            ---------------------------------------
By 9:30 A.M.                   Auction Agent advises the Fund and Broker-Dealers
                               of the applicable Maximum Rate and the AA Financial
                               Commercial Paper Rate used in determining such
                               Maximum Rate as set forth in Section 2.3(a) hereof.

9:30 A.M. - 1:00 P.M.          Auction Agent assembles information communicated
                               to it by Broker-Dealers as provided in Section 2(a)
                               of the Auction

6

      Time                                        Event
-------------------            ---------------------------------------
                               Procedures. Submission Deadline is 1:00 P.M.

Not earlier than 1:00 P.M.     Auction Agent makes determinations pursuant to
                               Section 3(a) of the Auction Procedures.

By approximately 3:00 P.M.     Auction Agent advises Fund of results of
                               Auction as provided in Section 3(b) of the Auction
                               Procedures. Submitted Bids and Submitted Sell
                               Orders are accepted and rejected and shares of
                               Preferred Shares allocated as provided in Section 4
                               of the Auction Procedures. Auction Agent gives
                               notice of Auction results as set forth in paragraph
                               (a) of the Settlement Procedures.

The Auction Agent shall follow the notification procedures set forth in paragraph (a) of the Settlement Procedures.

2.5 Designation of Dividend Period.

(a) The Statement provides that the Fund will designate the duration of subsequent Dividend Periods; provided, however, that no such designation is necessary for a Standard Dividend Period; provided, however, that any designation of a Special Rate Period shall be effective only if (i) notice thereof shall have been given as provided herein, (ii) any failure to pay in a timely manner to the Auction Agent the full amount of any dividend on, or the redemption price of, the Preferred Shares shall have been cured, (iii) Sufficient Clearing Bids shall have existed in an Auction held on the Auction Date immediately preceding the first day of such proposed Dividend Period other than a Standard Dividend Period, and (iv) if the Fund shall have mailed a Notice of Redemption with respect to any shares, the Redemption Price with respect to such shares shall have been deposited with the Paying Agent.

(b) Pursuant to the Statement, the Fund may, at its option, designate a Special Dividend Period for any series of Preferred Shares in the manner described

7

below and in Section 4 of Part I of the Statement. If the Fund proposes to designate any succeeding Special Dividend Period the Fund shall deliver to the Auction Agent:
(i) A notice of such proposed Special Dividend Period in the form of Exhibit D hereto not less than 7 (or 2 in the event the duration of the Dividend Period is fewer than 8 days) nor more than 30 Business Days prior to the first day of such proposed Special Dividend Period. The Auction Agent on behalf of the Fund shall deliver such notice by First Class Mail or by facsimile to each Existing Holder of shares of such series of Preferred Shares at the address or facsimile number set forth for such Existing Holder in the records of the Auction Agent and to the Broker-Dealers for such series as promptly as practicable after its receipt of such notice from the Fund.

(ii) A notice in the form of Exhibit E or F hereto not later than 11:00 A.M. on the second Business Day next preceding the first day of such proposed Special Dividend Period, of either (x) its determination, subject to certain conditions, to proceed with such Special Dividend Period, in which case the Fund shall specify the terms of the Specific Redemption Provisions, if any, or
(y) its determination not to proceed with such Special Dividend Period in which latter event the succeeding Dividend Period shall be a Standard Dividend Period. The Auction Agent shall promptly deliver such notice to the Broker-Dealers, but in no event later than 3:00 P.M. on the date of such notice.

(iii) If the Fund fails to deliver either such notice with respect to any designation of any proposed Special Dividend Period to the Auction Agent by 11:00 A.M., New York City time, on the second Business Day next preceding the first day of such proposed Special Dividend Period, the Fund shall be deemed to have delivered a notice to the Auction Agent with respect to such Dividend Period to the effect that it has determined not to proceed with the designation of a Special Dividend Period, thereby resulting in a Standard Dividend Period.

2.6 Notice of Auction Results. On each Auction Date for any series of Preferred Shares, the Auction Agent shall notify Broker-Dealers of the results of the Auction held on such date by telephone (or by other electronic means acceptable to the parties) as set forth in paragraph (a) of the Settlement Procedures.

2.7 Broker-Dealers.

(a) Not later than 12:00 Noon on each Auction Date for any series of Preferred Shares, the Fund shall pay to the Auction Agent an amount in cash equal to the aggregate fees payable to the Broker-Dealers for such

8

series pursuant to Section 2.6 of the Broker-Dealer Agreement for such series. The Auction Agent shall apply such moneys as set forth in Section 2.6 of each such Broker-Dealer Agreement.

(b) The Fund shall obtain the consent of the Auction Agent prior to selecting any Person to act as a Broker-Dealer, which consent shall not be unreasonably withheld.

(c) The Auction Agent shall terminate any Broker-Dealer Agreement as set forth therein if so directed in writing by the Fund.

(d) Subject to the Auction Agent's having consented to the selection of the relevant Broker-Dealer pursuant to Section 2.7(b) hereof, the Auction Agent shall from time to time enter into such Broker-Dealer Agreements with one or more Broker-Dealers as the Fund shall request, and shall enter into such schedules to any such Broker-Dealer Agreements as the Fund shall request, which schedules, among other things, shall set forth the series of Preferred Shares to which such Broker-Dealer Agreement relates.

2.8 Ownership of Preferred Shares. The Fund shall notify the Auction Agent if the Fund or any affiliate of the Fund acquires any shares of Preferred Shares of any series. Neither the Fund nor any affiliate of the Fund shall submit any Order in any Auction for Preferred Shares, except as set forth in the next sentence. Any Broker-Dealer that is an affiliate of the Fund may submit Orders in Auctions, but only if such Orders are not for its own account. For purposes of this
Section 2.8, a Broker-Dealer shall not be deemed to be an affiliate of the Fund solely because one or more of the directors or executive officers of such Broker-Dealer or of any Person controlled by, in control of or under common control with such Broker-Dealer is also a Trustee of the Fund. The Auction Agent shall have no duty or liability with respect to enforcement of this Section 2.8.

2.9 Access to and Maintenance of Auction Records. The Auction Agent shall, upon the receipt of prior written notice from the Fund, afford to the Fund, at no cost to the Auction Agent, access at reasonable times during normal business hours to all books, records, documents and other information concerning the conduct and results of Auctions. The Auction Agent shall maintain records relating to an Auction for a period of six years after such Auction and such records shall, in reasonable detail, accurately and fairly reflect the actions taken by the Auction Agent hereunder.

2.10 Dividend and Redemption Price Deposit. The Fund shall pay to the Auction Agent, not later than 12:00 noon, New York City time, on each Dividend Payment Date for any series of Preferred Shares, an aggregate amount of immediately available funds equal to the dividends to be paid on such Dividend Payment Date. The Fund will deposit with the Auction Agent funds sufficient to redeem the specified number of Preferred Shares with respect to a redemption required under subparagraph (a)(ii) of Section 3 of the Statement, by 1:00 P.M., New York City

9

time, of the Business Day immediately preceding the Mandatory Redemption Date.

3. The Auction Agent as Dividend and Redemption Price Disbursing Agent

The Auction Agent, as dividend and redemption price disbursing agent, shall pay to the Holders of shares of Preferred Shares of any series (i) on each Dividend Payment Date for such series, dividends on the shares of Preferred Shares of such series, (ii) on any date fixed for redemption of shares of Preferred Shares of any series, the Redemption Price of any shares of such series called for redemption and (iii) any late charge related to any payment of dividends or Redemption Price, in each case after receipt of the necessary funds from the Fund with which to pay such dividends, Redemption Price or late charge. The amount of dividends for any Dividend Period for any series of Preferred Shares to be paid by the Auction Agent to the Holders of such shares of such series will be determined by the Fund as set forth in Section 2 of Part I of the Statement with respect to such series. The Redemption Price of any shares to be paid by the Auction Agent to the Holders will be determined by the Fund as set forth in Section 3 of Part I of the Statement with respect to such series. The Fund shall notify the Auction Agent in writing of a decision to redeem shares of any series of Preferred Shares as provided in paragraph (b) of Section 3 of Part I of the Statement. Such notice by the Fund to the Auction Agent shall contain the information required by paragraph (b) of Section 3 of Part I of the Statement to be stated in the notice of redemption required to be mailed by the Auction Agent to such Holders.

4. The Auction Agent as Transfer Agent and Registrar

4.1 Issue of Share Certificates. Upon the Date of Original Issue of each series of Preferred Shares, one certificate representing all of the shares of each series issued on such date shall be issued by the Fund and, at the request of the Fund, registered in the name of Cede & Co. and countersigned by the Auction Agent.

4.2 Registration of Transfer of Shares. Shares of each series of Preferred Shares shall be registered solely in the name of the Securities Depository or its nominee.

4.3 Removal of Legend on Restricted Shares. All requests for removal of legends on shares of any series of Preferred Shares indicating restrictions on transfer shall be accompanied by an opinion of counsel stating that such legends may be removed and such shares freely transferred, such opinion to be delivered under cover of a letter from a Fund Officer authorizing the Auction Agent to remove the legend on the basis of said opinion.

4.4 Lost Share Certificates. The Auction Agent shall register replacement certificates for certificates represented to have been lost, stolen or destroyed upon the fulfillment of such requirements as shall be deemed appropriate by the Fund and the Auction Agent, subject at all times to provisions of law, the By-Laws of the Fund governing such matters and resolutions adopted by the Fund with respect to lost securities. The Auction Agent may issue new certificates in exchange for and upon the cancellation of mutilated certificates. Any request by the Fund to the Auction Agent to issue a replacement or new certificate pursuant to this

10

Section 4.4 shall be deemed to be a representation and warranty by the Fund to the Auction Agent that such issuance will comply with such provisions of law and the By-Laws and resolutions of the Fund.

4.5 Disposition of Canceled Certificates; Record Retention. The Auction Agent shall retain all share certificates which have been cancelled in transfer or exchange and all accompanying documentation in accordance with applicable rules and regulations of the Securities and Exchange Commission for two calendar years. The Fund also shall undertake to furnish to the Securities and Exchange Commission and to the Board of Governors of the Federal Reserve System, upon demand, at either the principal office or at any regional office, complete, correct and current hard copies of any and all such records. Thereafter such records shall not be destroyed by the Fund without the concurrence of the Auction Agent.

4.6 Share Transfer Books. For so long as the Auction Agent is acting as the transfer agent for any series of Preferred Shares pursuant to this Agreement, it shall maintain a share transfer book containing a list of the Holders of the shares of each series of Preferred Shares, the number of shares of each series held by such Holders and the address of each Holder based upon information provided to it by Broker-Dealers. The Auction Agent shall record in such share transfer books any change of address of a Holder upon notice by such Holder. In case of any request or demand for the inspection of the share transfer books of the Fund or any other books in the possession of the Auction Agent, the Auction Agent will notify the Fund and secure instructions as to permitting or refusing such inspection; provided, however, that the Auction Agent, in its capacity as transfer agent, reserves the right and is authorized to disclose any such information if (a) it is ordered to do so by a court of competent jurisdiction or a regulatory body, judicial or quasi-judicial agency or authority having the authority to compel such disclosure, (b) it is advised by its counsel that its failure to do so would be unlawful or (c) failure to do so would expose the Auction Agent to loss, liability, claim, damage or expense for which it has not received indemnity or security satisfactory to it.

4.7 Return of Funds. Any funds deposited with the Auction Agent hereunder by the Fund for any reason, including but not limited to redemption of shares of Preferred Shares of any series, that remain unpaid after 90 days shall be repaid to the Fund upon the written request of the Fund.

5. Representations and Warranties of the Fund

The Fund represents and warrants to the Auction Agent that:

(a) the Fund is a duly organized and existing business trust in good standing under the laws of the State of Delaware and has full corporate power or all requisite power to execute and deliver the Agreement and to authorize, create and issue the shares of Preferred Shares of each series and the

11

shares of Preferred Shares of each series when issued, will be duly authorized, validly issued, fully paid and nonassessable;

(b) the Agreement has been duly and validly authorized, executed and delivered by the Fund and constitutes the legal, valid and binding obligation of the Fund;

(c) the form of the certificate evidencing the shares of Preferred Shares of each series complies or will comply with all applicable laws of the State of Delaware;

(d) when issued, the shares of Preferred Shares of each series will have been duly registered under the Securities Act of 1933, as amended, and no further action by or before any governmental body or authority of the United States or of any state thereof is required in connection with the execution and delivery of the Agreement or will have been required in connection with the issuance of the shares of Preferred Shares of each series; and

(e) the execution and delivery of the Agreement and the issuance and delivery of the shares of Preferred Shares of each series do not and will not conflict with, violate or result in a breach of, the terms, conditions or provisions of, or constitute a default under, the Agreement and Declaration of Trust (as amended by one or more Statements) or the By-Laws of the Fund, any law or regulation, any order or decree of any court or public authority having jurisdiction, or any mortgage, indenture, contract, agreement or undertaking to which the Fund is a party or by which it is bound the effect of which conflict, violation, default or breach would be material to the Fund or the Fund and its subsidiaries taken as a whole.

6. The Auction Agent

6.1 Duties and Responsibilities.

(a) The Auction Agent is acting solely as non-fiduciary agent for the Fund hereunder and owes no duties, fiduciary or otherwise, to any other Person by reason of this Agreement.

(b) The Auction Agent undertakes to perform such duties and only such duties as are specifically set forth in this Agreement and the Broker-Dealer Agreements, and no implied covenants or obligations shall be read into this Agreement against the Auction Agent.

(c) In the absence of willful misconduct or gross negligence on its part, the Auction Agent shall not be liable for any action taken, suffered, or omitted or for any error of judgment made by it in the performance of its duties under this Agreement except that the Auction Agent shall be liable for any

12

error of judgment made in good faith if the Auction Agent shall have been grossly negligent in ascertaining the pertinent facts.

(d) Any funds deposited with the Auction Agent hereunder by the Fund for any reason, including the payment of dividends or the redemption of shares of Preferred Shares of any series, that remain with the Auction Agent after 90 days shall be repaid to the Fund as provided in Section 4.7 hereof.

6.2 Rights of the Auction Agent.

(a) The Auction Agent may conclusively rely and shall be protected in acting or refraining from acting upon any communication authorized hereby and upon any written instruction, notice, request, direction, consent, report, certificate, share certificate or other instrument, paper or document believed in good faith by it to be genuine. The Auction Agent shall not be liable for acting upon any telephone communication authorized hereby which the Auction Agent believes in good faith to have been given by the Fund or by any Broker-Dealer. The Auction Agent may record telephone communications with the Fund or with any Broker-Dealer.

(b) The Auction Agent may consult with counsel and the reasonable advice of such counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon.

(c) The Auction Agent shall not be required to advance, expend or risk its own funds or otherwise incur or become exposed to financial liability in the performance of its duties hereunder.

(d) The Auction Agent may perform its duties and exercise its rights hereunder either directly or by or through agents or attorneys and shall not be responsible for any misconduct or negligence on the part of any agent or attorney appointed by it with due care hereunder.

(e) The Auction Agent shall not be responsible or liable for any failure or delay in the performance of its obligations under this agreement arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes; fires, floods; wars; civil or military disturbances; sabotage; act of terrorism; epidemics; riots; interruptions, loss or malfunctions of utilities; computer (hardware or software) or communications services; accidents; labor disputes; acts of civil or military authority or governmental actions; it being understood that the Auction Agent shall use reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances.

13

(f) In no event shall the Auction Agent be responsible or liable for special, indirect or consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit), even if the Auction Agent has been advised of the likelihood of such loss or damage and regardless of the form of action.

6.3 Auction Agent's Disclaimer. The Auction Agent makes no representation as to the validity or adequacy of this Agreement (except as to the Auction Agent's duties hereunder and that the Auction Agent hereby represents that this Agreement has been duly authorized, executed and delivered by the Auction Agent and (if and when signed and delivered by the Fund) constitutes a legal and binding obligation of the Auction Agent), the Preferred Shares, or any other document related to the Preferred Shares.

6.4 Compensation, Expenses and Indemnification.

(a) The Fund shall pay the Auction Agent from time to time reasonable compensation for all services rendered by it under this Agreement and the Broker-Dealer Agreement in such amounts as may be agreed to by the Fund and the Auction Agent from time to time.

(b) The Fund shall reimburse the Auction Agent upon its request for all reasonable out-of-pocket expenses, disbursements and advances incurred or made by the Auction Agent in accordance with any provision of this Agreement and the Broker-Dealer Agreements (including the reasonable compensation and the expenses and disbursements of its agents and counsel), except any expense or disbursement attributable to its gross negligence or willful misconduct.

(c) The Fund shall indemnify the Auction Agent for and hold it harmless against, any loss, liability or expense incurred without gross negligence or willful misconduct on its part, arising out of or in connection with its agency under this Agreement and the Broker-Dealer Agreements, including the costs and expenses of defending itself against any claim or liability in connection with its exercise or performance of its duties hereunder and thereunder.

7. Miscellaneous

7.1 Term of Agreement.

(a) The term of this Agreement is unlimited unless it shall be terminated as provided in this Section 7.1. The Fund may terminate this Agreement any time by so notifying the Auction Agent, provided that the Fund has entered into an agreement in substantially the form of this Agreement with a successor auction agent. The Auction Agent may terminate this Agreement upon written notice to the Fund, such termination to be effective on the earlier of (i) the date specified in such notice which shall not be earlier than 45 days after the giving of such notice or (ii) the date on

14

which a successor Auction Agent is appointed by the Fund pursuant to an agreement containing substantially the same terms and conditions as this Agreement.

(b) Except as otherwise provided in this paragraph (b), the respective rights and duties of the Fund and the Auction Agent under this Agreement shall cease upon termination of this Agreement. The Fund's obligations under Section 6.4 hereof and its representations and warranties contained in Section 5 hereof and the Auction Agent's obligations and liabilities under Sections 2.9 and 4.5 hereof shall survive the termination hereof with respect to any Series of Preferred Shares. Upon termination of this Agreement, the Auction Agent shall, at the Fund's request, promptly deliver to the Fund copies of all books and records maintained by it in connection with its duties hereunder.

7.2 Force Majeure. Neither party to this Agreement shall be responsible or liable for any failure or delay in the performance of its obligations under this Agreement arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes; fires; floods; wars; civil or military disturbances; sabotage; epidemics; riots; interruptions, loss or malfunctions or utilities; computer (hardware or software) or communications services; accidents; labor disputes; acts of civil or military authority or governmental actions; it being understood that the parties shall use reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances.

7.3 Communications. Except for (a) communications authorized to be by telephone pursuant to this Agreement or the Auction Procedures and (b) communications in connection with Auctions (other than those expressly required to be in writing) and unless otherwise specified by the terms of this Agreement, all notices, requests and other communications to any party hereunder shall be in writing (including telecopy or similar writing) given to such person at its address or telecopy number set forth below:

If to the Fund, addressed:

Calamos Convertible and High Income Fund 1111 East Warrenville Road Naperville, Illinois 60563-1493

Attention: James S. Hamman, Jr.

Telephone No.: (630) 245-7296

If to the Auction Agent, to the address or telecopy number set forth in the Request and Acceptance Letter.

15

or to such other address as the party to whom the communication is addressed shall have previously communicated in writing to the other party. Communications shall be given on behalf of the Fund by a Fund Officer and on behalf of the Auction Agent by an Authorized Officer. Communications shall be effective when received at the proper address.

7.4 Entire Agreement. This Agreement contains the entire agreement among the parties relating to the subject matter hereof, and there are no other representations, endorsements, promises, agreements or understandings, oral, written or inferred, between the parties relating to the subject matter hereof except for agreements relating to compensation of the Auction Agent. This Agreement supersedes all prior agreements between the parties relating to the subject matter of this Agreement.

7.5 Benefits. Nothing herein, express or implied, shall give to any Person, other than the Fund, the Auction Agent and their respective successors and assigns, any benefit of any legal or equitable right, remedy or claim hereunder.

7.6 Amendment; Waiver.

(a) This Agreement shall not be deemed or construed to be modified, amended, rescinded, cancelled or waived, in whole or in part, except by a written instrument signed by a duly authorized representative of the party to be charged.

(b) Failure of either party hereto to exercise any right or remedy hereunder in the event of a breach hereof by the other party shall not constitute a waiver of any such rights or remedies with respect to any subsequent breach.

7.7 Successors and Assigns. This Agreement shall be binding upon, inure to the benefit of, and be enforceable by, the respective successors of each of the Fund and the Auction Agent.

7.8 Severability. If any clause, provision or section hereof shall be ruled invalid or unenforceable by any court of competent jurisdiction, the invalidity or unenforceability of such clause, provision or section shall not affect any of the remaining clauses, provisions or sections hereof.

7.9 Execution in Counterparts. This Agreement may be executed in several counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument.

7.10 Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York.

16

EXHIBIT A

BROKER-DEALER AGREEMENT

A-1

EXHIBIT B

SETTLEMENT PROCEDURES

B-1

EXHIBIT C

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
NOTICE OF AUCTION DATE FOR PREFERRED SHARES ("Preferred Shares")

NOTICE IS HEREBY GIVEN that the Auction Date of the next Auction for the Preferred Shares Series ___ of the Calamos Convertible and High Income Fund (the "Fund") is scheduled to be ____________ and the next Dividend Payment Date for Series ____ of the Fund's Preferred Shares will be _______________.

Dated: Calamos Convertible and High Income Fund

C-1

EXHIBIT D

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
NOTICE OF PROPOSED DESIGNATION OF
SPECIAL DIVIDEND PERIOD FOR
PREFERRED SHARES ("Preferred Shares")

NOTICE IS HEREBY GIVEN that Calamos Convertible and High Income Fund (the "Fund") proposes to exercise its option to designate the Dividend Period of its Series __ Preferred Shares commencing [the first day of the proposed Special Dividend Period] and ending [the last day of the proposed Special Dividend Period] as a Special Dividend Period and the Maximum Rate for such Special Dividend Period is proposed to be ___________.

By 3:00 P.M., New York City time, on the second Business Day next preceding the first day of such proposed Special Dividend Period, the Fund will notify the Auction Agent for the Preferred Shares of either (a) its determination to exercise such option, designating the length of such Special Dividend Period and the terms of the Specific Redemption Provisions, if any, or
(b) its determination not to exercise such option.

Dated: Calamos Convertible and High Income Fund

D-1

EXHIBIT E

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
NOTICE OF DESIGNATION OF SPECIAL DIVIDEND PERIOD OF
PREFERRED SHARES ("Preferred Shares")

NOTICE IS HEREBY GIVEN that Calamos Convertible and High Income Fund (the "Fund") has determined to designate the Dividend Period of its Series __ Preferred Shares commencing on [the first day of the Special Dividend Period] and ending on [the last day of the Special Dividend Period] as a Special Dividend Period.

The Special Dividend Period will be _____ [days] [year(s)].

The Auction Date for the Special Dividend Period is (the Business Day next preceding the first day of such Special Dividend Period].

The scheduled Dividend Payment Dates for such series of Preferred Shares during such Special Dividend Period will be ____________________.

[Specific Redemption Provisions, if applicable.]

[The Special Dividend Period shall not commence if on such Auction Date Sufficient Clearing Bids shall not exist.]

Dated: Calamos Convertible and High Income Fund

E-1

EXHIBIT F

CALAMOS CONVERTIBLE AND HIGH INCOME FUND
NOTICE OF DETERMINATION NOT TO DESIGNATE
SPECIAL DIVIDEND PERIOD OF
PREFERRED SHARES ("Preferred Shares")

NOTICE IS HEREBY GIVEN that Calamos Convertible and High Income Fund (the "Fund") has determined not to exercise its option to designate a Special Dividend Period of its Series __ Preferred Shares Accordingly, the next succeeding Dividend Period of such series will be a Standard Dividend Period.

Dated: Calamos Convertible and High Income Fund

F-1

EXHIBIT k.3

CALAMOS BROKER-DEALER AGREEMENT

BASIC TERMS FOR ACTING AS A BROKER-DEALER

RELATING TO

PREFERRED SHARES

________________, 2003


TABLE OF CONTENTS

                                                                                                               PAGE
1.       Definitions and Rules of Construction...................................................................1
         1.1      Terms Defined by Reference to Statement........................................................1
         1.2      Terms Defined Herein...........................................................................1
         1.3      Rules of Construction..........................................................................2

2.       The Auction.............................................................................................3
         2.1      Purposes; Incorporation by Reference of Auction Procedures and Settlement Procedures...........3
         2.2      Preparation of Each Auction....................................................................3
         2.3      Auction Schedule; Method of Submission of Order................................................5
         2.4      Notices........................................................................................7
         2.5      Designation of Special Rate Period.............................................................7
         2.6      Service Charge to be Paid to BD................................................................8
         2.7      Settlement.....................................................................................8

3.       The Auction Agent......................................................................................10
         3.1      Duties and Responsibilities...................................................................10
         3.2      Rights of the Auction Agent...................................................................10
         3.3      Auction Agent's Disclaimer....................................................................11

4.       Miscellaneous..........................................................................................11
         4.1      Termination...................................................................................11
         4.2      Force Majeure.................................................................................11
         4.3      Participant in Securities Depository..........................................................11
         4.4      Payment of Dividends in Same-Day Funds........................................................11
         4.5      Communications................................................................................12
         4.6      Entire Agreement..............................................................................12
         4.7      Benefits......................................................................................12
         4.8      Amendment; Waiver.............................................................................12
         4.9      Successors and Assigns........................................................................13
         4.10     Severability..................................................................................13
         4.11     Execution in Counterparts.....................................................................13
         4.12     Governing Law.................................................................................13

EXHIBITS

EXHIBIT A  - Settlement Procedures
EXHIBIT B  - Calamos Preferred Shares, Series___ Order Form
EXHIBIT C  - Calamos Preferred Shares, Series___ Transfer Form

EXHIBIT D - Calamos Preferred Shares, Series___ Notice of a Failure to Deliver EXHIBIT E - Form of Acceptance Letter

i

These basic terms ("Basic Terms") set forth the general terms and conditions pursuant to which a broker-dealer identified in a Acceptance Letter (together with its successors and assigns, a "BD") will act as a Broker-Dealer for Preferred Shares ("Preferred Shares") issued by investment companies, now or hereafter organized, registered under the Investment Company Act of 1940, as amended (the "Funds"), for which Calamos Asset Management, Inc. (the "Adviser") is the investment adviser.

Each Fund has issued or may issue shares of Preferred Shares, pursuant to its Agreement and Declaration of Trust, as amended or supplemented by the Statement of such Fund. A bank or trust company specified in the Request and Acceptance Letter will act as the auction agent (the "Auction Agent") of such Fund pursuant to authority granted it in the Auction Agency Agreement.

The Statement of each Fund will provide that, for each Rate Period of any series of Preferred Shares of such Fund then outstanding, the Applicable Rate for such series for such Rate Period shall, except under certain conditions, be the rate per annum that the Auction Agent of such Fund advises results from implementation of the Auction Procedures for such series. The Board of Trustees of each Fund will adopt a resolution appointing the Auction Agent as auction agent for purposes of the Auction Procedures for each series of Preferred Shares of such Fund.

The Auction Procedures of each Fund will require the participation of one or more Broker-Dealers for each series of Preferred Shares of such Fund. BD will act as a Broker-Dealer for each series of Preferred Shares of each Fund.

1. Definitions and Rules of Construction

1.1 Terms Defined by Reference to Statement. Capitalized terms not defined herein shall have the respective meanings specified in the Statement of the relevant Fund.

1.2 Terms Defined Herein. As used herein and in the Settlement Procedures, the following terms shall have the following meanings, unless the context otherwise requires:

(a) "Acceptance Letter" shall mean the letter from the Fund, Adviser and Auction Agent to BD pursuant to which the BD is appointed as a Broker-Dealer for each series of Preferred Shares issued by any Fund that has executed a Request Letter.

(b) "Agreement", with respect to any Fund, shall mean the Basic Terms, together with the Acceptance Letter and Request Letter relating to one or more series of Preferred Shares of such Fund.

(c) "Auction" shall have the meaning specified in Section 2.1 hereof.


(d) "Auction Agency Agreement" shall mean the Auction Agent Agreement between a Fund and the Auction Agent relating to one or more series of Preferred Shares of such Fund.

(e) "Auction Procedures" shall mean the auction procedures constituting Part II of the Statement.

(f) "Authorized Officer" shall mean each Vice President, Assistant Vice President and Assistant Treasurer of the Auction Agent assigned to the Dealing and Trading Group of its Corporate Trust Division and every other officer or employee of the Auction Agent designated as an "Authorized Officer" for purposes of this Agreement in a communication to the BD.

(g) "BD Officer" shall mean each officer or employee of BD designated as a "BD Officer" for purposes of this Agreement in a communication to the Auction Agent.

(h) "Broker-Dealer Agreement" shall mean this Agreement and any substantially similar agreement between the Auction Agent and a Broker-Dealer.

(i) "Existing Holder" shall have the meaning set forth in the Statement, and for purposes of this Broker-Dealer Agreement and with respect to the Auction Procedures as referred to in this Agreement, shall also include, as the circumstances may require, a Person who is listed as the beneficial owner of Preferred Shares in the records of a Broker-Dealer.

(j) "Potential Holder" shall have the meaning set forth in the Statement, and for purposes of this Broker-Dealer Agreement and with respect to the Auction Procedures as referred to in this Agreement, shall also include, as the circumstances may require, any other Person, including any Existing Holder of shares of Preferred Shares, who may be interested in acquiring shares of Preferred Shares (or, in the case of an Existing Holder, additional shares of Preferred Shares).

(k) "Request Letter" with respect to any Fund, shall mean the letter from such Fund to the Adviser and the Auction Agent for such Fund pursuant to which such Fund appoints BD as a Broker-Dealer for each series of Preferred Shares of such Fund.

(l) "Settlement Procedures" shall mean the Settlement Procedures attached hereto as Exhibit A.

(m) "Statement" shall mean the Statement of Preferences of Auction Market Preferred Shares and authorizing the issuance of, one or more series of Preferred Shares.

2

1.3 Rules of Construction. Unless the context or use indicates another or different meaning or intent, the following rules shall apply to the construction of this Agreement:

(a) Words importing the singular number shall include the plural number and vice versa.

(b) The captions and headings herein are solely for the convenience of reference and shall not constitute a part of this Agreement nor shall they affect its meaning, construction or effect.

(c) The words "hereof", "herein", "hereto", and other words of similar import refer to this Agreement as a whole.

(d) All references herein to a particular time of day shall be to New York City time.

2. The Auction

2.1 Purposes; Incorporation by Reference of Auction Procedures and Settlement Procedures.

(a) The provisions of the Auction Procedures will be followed by the Auction Agent for the purpose of determining the Applicable Rate for any Dividend Period of any series of Preferred Shares for which the Applicable Rate is to be determined by an Auction. Each periodic operation of such procedures is hereinafter referred to as an "Auction."

(b) All of the provisions contained in the Auction Procedures and the Settlement Procedures are incorporated herein by reference in their entirety and shall be deemed to be a part hereof to the same extent as if such provisions were fully set forth herein.

(c) The BD agrees to act as, and assumes the obligations of, and limitations and restrictions placed upon, a Broker-Dealer under this Agreement for each series of Preferred Shares. The BD understands that other Persons meeting the requirements specified in the definition of "Broker-Dealer" contained in the Auction Procedures may execute Broker-Dealer Agreements and participate as Broker-Dealers in Auctions.

2.2 Preparation of Each Auction.

(a) Not later than 9:30 A.M. on each Auction Date for any series of Preferred Shares, the Auction Agent shall advise the Broker-Dealers for such series by telephone of the Maximum Rate therefor and the AA Composite Commercial Paper Rate(s) and the Treasury Index Rate(s), as the case may be, used in determining the Maximum Rate.

3

(b) In the event that any Auction Date for any series of Preferred Shares shall be changed after the Auction Agent has given the notice referred to in clause (vi) of paragraph (a) of the Settlement Procedures, or after the notice referred to in Section 2.5(a) hereof, if applicable, the Auction Agent, by such means as the Auction Agent deems practicable shall give notice of such change to the BD, if it is a Broker-Dealer for such series, not later than the earlier of 9:15 A.M. on the new Auction Date or 9:15
A.M. on the original Auction Date. Thereafter, the BD shall notify customers of the BD who the BD believes are Existing Holders of shares of Preferred Shares of such change in the Auction Date.

(c) For purposes of maintaining its list of Existing Holders, the Auction Agent for any series of Preferred Shares from time to time may but shall have no obligation to request any Broker-Dealer to provide such Auction Agent with a list of Persons who such Broker-Dealer believes should be Existing Holders based upon inquiries of those Persons such Broker-Dealer believes are Beneficial Owners as a result of the most recent Auction and with respect to each such Person, the number of shares of such series of Preferred Shares such Broker-Dealer believes are owned by such Person. BD shall comply with any such request relating to a series of Preferred Shares in respect of which BD was named a Broker-Dealer, and the Auction Agent shall keep confidential any such information so provided by BD and shall not disclose any information so provided by BD to any Person other than the Fund and BD; provided, however, that the Auction Agent reserves the right and is authorized to disclose any such information if (a) it is ordered to do so by a court of competent jurisdiction or a regulatory body, judicial or quasi-judicial agency or authority having the authority to compel such disclosure, (b) it is advised by its counsel that its failure to do so would be unlawful or (c) failure to do so would expose the Auction Agent to loss, liability, claim, damage or expense for which it has not received indemnity or security satisfactory to it. In the event the Auction Agent is required to disclose information in accordance with the foregoing sentence, it shall provide written notice of such requirement to the Broker-Dealer as promptly as practicable.

(d) In the event the Auction Agent is required to disclose information in accordance with the foregoing sentence, it shall provide written notice of such requirement to the Broker-Dealer as promptly as possible.

(e) BD agrees to maintain a list of customers relating to a series of Preferred Shares and to use its best efforts, subject to existing laws and regulations, to contact the customers on such list whom BD believes may be interested in participating in the Auction on each Auction Date, as a Potential Holder or a Potential Beneficial Owner, for the purposes set forth in the Auction Procedures. Nothing herein shall require BD to submit an Order for any customer in any Auction.

4

(f) The Auction Agent's registry of Existing Holders of shares of a series of Preferred Shares shall be conclusive and binding on BD. BD may inquire of the Auction Agent between 3:00 P.M. on the Business Day preceding an Auction for shares of a series of Preferred Shares and 9:30 A.M. on the Auction Date for such Auction to ascertain the number of shares of such series in respect of which the Auction Agent has determined BD to be an Existing Holder. If BD believes it is the Existing Holder of fewer shares of such series than specified by the Auction Agent in response to BD's inquiry, BD may so inform the Auction Agent of that belief. BD shall not, in its capacity as Existing Holder of shares of such series, submit Orders in such Auction in respect of shares of such series covering in the aggregate more than the number of shares of such series specified by the Auction Agent in response to BD's inquiry.

2.3 Auction Schedule; Method of Submission of Order.

(a) The Auction Agent shall conduct Auctions for Preferred Shares in accordance with the schedule set forth below. Such schedule with respect to any series of Preferred Shares of the Fund may be changed by the Auction Agent for such series with the consent of the Fund, which consent shall not be unreasonably withheld. The Auction Agent shall give written notice of any such change to each Broker-Dealer of such series. Such notice shall be given prior to the close of business on the Business Day next preceding the first Auction Date on which such change shall be effective.

          Time                                                 Event
-----------------------------             -------------------------------------------------
By 9:30 A.M.                              Auction Agent for such series advises the Fund
                                          and the Broker-Dealers for such series of the
                                          applicable Maximum Rate and the Reference Rate(s)
                                          used in determining such Maximum Rate as set
                                          forth in Section 2.2(a) hereof.

9:30 A.M.  - 1:00 P.M.                    Auction Agent assembles information communicated
                                          to it by Broker-Dealers as provided in Section
                                          2(a) of the Auction Procedures of the Fund.
                                          Submission Deadline is 1:00 P.M.

Not earlier than 1:00 P.M.                Auction Agent makes determinations pursuant to
                                          Section 3(a) of the Auction Procedures.

By approximately 3:00 P.M.                Auction Agent advises the Fund of results of
                                          Auction as provided in Section 3(b) of the
                                          Auction Procedures.

                                          Submitted Bids and Submitted Sell Orders are
                                          accepted and rejected and shares of such series
                                          of Preferred Shares allocated as provided in
                                          Section 4 of the Auction Procedures.

5

          Time                                                 Event
-----------------------------             -------------------------------------------------
                                          Auction Agent gives notice of
                                          Auction results as set forth
                                          in Section 2.4(a) hereof.

(b) BD shall submit Orders to the appropriate Auction Agent in writing substantially in the form attached hereto as Exhibit B. BD shall submit a separate Order to such Auction Agent for each Potential Holder or Existing Holder with respect to whom BD is submitting an Order and shall not otherwise net or aggregate such Orders prior to their submission to such Auction Agent.

(c) BD shall deliver to the appropriate Auction Agent (i) a written notice in substantially the form attached hereto as Exhibit C of transfers of shares of Preferred Shares to BD from another Person other than pursuant to an Auction and (ii) a written notice substantially in the form attached hereto as Exhibit D, of the failure of any shares of Preferred Shares to be transferred to or by any Person that purchased or sold shares of Preferred Shares through BD pursuant to an Auction. Such Auction Agent is not required to accept any such notice described in clause (i) for an Auction unless it is received by the Auction Agent by 3:00 P.M. on the Business Day preceding such Auction.

(d) BD and other Broker-Dealers may submit Orders in Auctions for their own accounts (including Orders for their own accounts where the Order is placed beneficially for a customer) unless the relevant Fund shall have notified BD and all other Broker-Dealers that they may no longer do so, in which case Broker-Dealers may continue to submit Hold Orders and Sell Orders for their own accounts.

(e) BD agrees to handle its customers' orders in accordance with its duties under applicable securities laws and rules.

(f) To the extent that pursuant to Section 4 of the Auction Procedures of any Fund, BD continues to hold, sells, or purchases a number of shares that is fewer than the number of shares in an Order submitted by BD to the Auction Agent in which BD designated itself as an Existing Holder or Potential Holder in respect of customer Orders, BD shall make appropriate pro rata allocations among its customers for which it submitted Orders of similar tenor. If as a result of such allocations, any Beneficial Owner would be entitled or required to sell, or any Potential Beneficial Owner would be entitled or required to purchase, a fraction of a share of Preferred Shares on any Auction Date, BD shall, in such manner as it shall determine in its sole discretion, round up or down the number of shares of Preferred Shares to be purchased or sold on such Auction Date by any

6

Beneficial Owner or Potential Beneficial Owner on whose behalf BD submitted an Order so that the number of shares so purchased or sold by each such Beneficial Owner or Potential Beneficial Owner on such Auction Date shall be whole shares of Preferred Shares.

2.4 Notices.

(a) On each Auction Date for any series of Preferred Shares, the Auction Agent shall notify BD, if BD is a Broker-Dealer of such series, by telephone or other electronic means acceptable to the parties of the results of the Auction as set forth in paragraph (a) of the Settlement Procedures. By approximately 11:30
a.m., on the Business Day next succeeding such Auction Date, the Auction Agent shall confirm to BD in writing the disposition of all Orders submitted by BD in such Auction.

(b) BD shall notify each Existing Holder, Potential Holder, Beneficial Owner or Potential Beneficial Owner on whose behalf BD has submitted an Order as set forth in paragraph (a) of the Settlement Procedures and take such other action as is required of BD pursuant to the Settlement Procedures.

2.5 Designation of Special Rate Period.

(a) If any Fund delivers to the Auction Agent a notice of the Auction Date for any series of Preferred Shares for a Dividend Period thereof that next succeeds a Dividend Period that is not a Standard Rate Period in the form of Exhibit C to the Auction Agency Agreement, the Auction Agent shall deliver such notice to BD as promptly as practicable after its receipt of such notice from such Fund.

(b) If the Board of Trustees proposes to designate any succeeding Dividend Period of any series of Preferred Shares as a Special Rate Period and such Fund delivers to the Auction Agent a notice of such proposed Special Rate Period in the form of Exhibit D to the Auction Agency Agreement, the Auction Agent shall deliver such notice to BD as promptly as practicable after its receipt of such notice from the Fund.

(c) If the Board of Trustees determines to designate such succeeding Dividend Period as a Special Rate Period and such Fund delivers to the Auction Agent a notice of such Dividend Period in the form of Exhibit E to the Auction Agency Agreement not later than 3:00 p.m. on the second Business Day next preceding the first day of such proposed Special Rate Period, the Auction Agent shall deliver such notice to BD not later than 3:00 p.m. on the next succeeding Business Day.

(d) If the Fund shall deliver to the Auction Agent a notice not later than 3:00 p.m. on the second Business Day next preceding the first day of any Dividend Period stating that the Fund has determined not to exercise its option to designate such succeeding Dividend Period as a Special Rate

7

Period, in the form of Exhibit F to the Auction Agent Agreement, or shall fail to timely deliver either such notice or a notice in the form of Exhibit E to the Auction Agency Agreement, the Auction Agent shall deliver a notice in the form of Exhibit F to the Auction Agency Agreement to BD not later than 3:00
p.m. on such Business Day.

2.6 Service Charge to be Paid to BD.

On the Business Day next succeeding each Auction Date for any series of Preferred Shares of any Fund specified in the Request Letter of any Fund, the Auction Agent for such series shall pay to BD from moneys received from such Fund an amount equal to the product of (a) (i) in the case of any Auction Date immediately preceding a Rate Period of such series consisting of 364 Rate Period Days or fewer, 1/4 of 1%, or (ii) in the case of any Auction Date immediately preceding a Rate Period of such series consisting of more than 364 Rate Period Days, such percentage as may be agreed upon by such Fund and BD with respect to such Rate Period, times (b) a fraction, the numerator of which is the number of Rate Period Days in the Rate Period therefor beginning on such Business Day and the denominator of which is 365 if such Rate Period consists of 7 Rate Period Days and 360 for all other Rate Periods, times (c) $25,000 times
(d) the sum of (i) the aggregate number of shares of such series placed by BD in such Auction that were (A) the subject of Submitted Bids of Existing Holders submitted by BD and continued to be held as a result of such submission and (B) the subject of Submitted Bids of Potential Holders submitted by BD and purchased as a result of such submission plus (ii) the aggregate number of shares of such series subject to valid Hold Orders (determined in accordance with paragraph (d) of Section 2 of the Auction Procedures) submitted to the Auction Agent by BD plus (iii) the number of shares of Preferred Shares deemed to be subject to Hold Orders of Existing Holders pursuant to paragraph (c) of Section 2 of the Auction Procedures of such Fund that were acquired by BD for its own account or were acquired by BD for its customers who are Beneficial Owners.

For purposes of subclause (d)(iii) of the foregoing paragraph, if any Existing Holder or Beneficial Owner who acquired shares of any series of Preferred Shares through BD transfers those shares to another Person other than pursuant to an Auction, then the Broker-Dealer for the shares so transferred shall continue to be BD; provided, however, that if the transfer was effected by, or if the transferee is, a Broker-Dealer other than BD, then such Broker-Dealer shall be the Broker-Dealer for such shares.

2.7 Settlement.

(a) If any Existing Holder or Beneficial Owner with respect to whom BD has submitted a Bid or Sell Order for shares of Preferred Shares of any series that was accepted in whole or in part fails to instruct its Agent Member to deliver the shares of Preferred Shares subject to such Bid or Sell Order against payment therefor, BD, if it knows the identity of such Agent Member, shall instruct such Agent Member to deliver such shares against payment therefor and, if such Agent Member fails to comply with such instructions, BD may deliver to the Potential Holder or Potential Beneficial Owner with respect to whom BD submitted a Bid for shares of

8

Preferred Shares of such series that was accepted in whole or in part a number of shares of Preferred Shares of such series that is less than the number of shares of Preferred Shares of such series specified in such Bid to be purchased by such Potential Holder or Potential Beneficial Owner.

(b) Neither the Auction Agent nor the Fund shall have any responsibility or liability with respect to the failure of an Existing Holder, Beneficial Owner, Potential Holder or Potential Beneficial Owner or its respective Agent Member to deliver shares of Preferred Shares of any series or to pay for shares of Preferred Shares of any series sold or purchased pursuant to the Auction Procedures or otherwise.

(c) Notwithstanding any provision of the Auction Procedures or the Settlement Procedures to the contrary, in the event BD is an Existing Holder with respect to shares of a series of Preferred Shares and the Auction Procedures provide that BD shall be deemed to have submitted a Sell Order in an Auction with respect to such shares if BD fails to submit an Order in that Auction with respect to such shares, BD shall have no liability to any Person for failing to sell such shares pursuant to such a deemed Sell Order if (i) such shares were transferred by the beneficial owner thereof without notification of such transfer in compliance with the Auction Procedures or (ii) BD has indicated to the Auction Agent pursuant to
Section 2.2(e) of this Agreement that, according BD's records, BD is not the Existing Holder of such shares.

(d) Notwithstanding any provision of the Auction Procedures or the Settlement Procedures to the contrary, in the event an Existing Holder or Beneficial Owner of shares of a series of Preferred Shares with respect to whom a Broker-Dealer submitted a Bid to the Auction Agent for such shares that was accepted in whole or in part, or submitted or is deemed to have submitted a Sell Order for such shares that was accepted in whole or in part, fails to instruct its Agent Member to deliver such shares against payment therefor, partial deliveries of shares of Preferred Shares that have been made in respect of Potential Holders, or Potential Beneficial Owners' Submitted Bids for shares of such series that have been accepted in whole or in part shall constitute good delivery to such Potential Holders and Potential Beneficial Owners.

(e) Notwithstanding the foregoing terms of this Section, any delivery or non-delivery of shares of Preferred Shares of any series which represents any departure from the results of an Auction for shares of such series, as determined by the Auction Agent, shall be of no effect for purposes of the registry of Existing Holders maintained by the Auction Agent pursuant to the Auction Agency Agreement unless and until the Auction Agent shall have been notified of such delivery or non-delivery.

9

(f) The Auction Agent shall have no duty or liability with respect to enforcement of this Section 2.7.

3. The Auction Agent

3.1 Duties and Responsibilities.

(a) The Auction Agent is acting solely as agent for the Funds with whom such Auction Agent has entered into Request Letters hereunder and owes no duties, fiduciary or otherwise, to any other Person.

(b) The Auction Agent undertakes to perform such duties and only such duties as are specifically set forth in such agreements to which it is a party, and no implied covenants or obligations shall be read into the agreements against the Auction Agent.

(c) In the absence of willful misconduct or gross negligence on its part, the Auction Agent shall not be liable for any action taken, suffered, or omitted or for any error of judgment made by it in the performance of its duties under this agreements. The Auction Agent shall not be liable for any error of judgment made in good faith unless the Auction Agent shall have been grossly negligent in ascertaining the pertinent facts.

3.2 Rights of the Auction Agent.

(a) The Auction Agent may conclusively rely and shall be protected in acting or refraining from acting upon any communication authorized hereby and upon any written instruction, notice, request, direction, consent, report, certificate, share certificate or other instrument, paper or document believed in good faith by it to be genuine. The Auction Agent shall not be liable for acting upon any telephone communication authorized hereby which the Auction Agent believes in good faith to have been given by the Fund or by a Broker-Dealer. The Auction Agent may record telephone communications with the Broker-Dealers.

(b) The Auction Agent may consult with counsel of its choice and the advice of such counsel shall be full and complete authorization and protection in respect of any action taken, suffered or omitted by it hereunder in good faith and in reliance thereon.

(c) The Auction Agent shall not be required to advance, expend or risk its own funds or otherwise incur or become exposed to financial liability in the performance of its duties hereunder.

(d) The Auction Agent shall not be responsible or liable for any failure or delay in the performance of its obligations under this agreement arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God;

10

earthquakes; fires, floods; wars; civil or military disturbances; sabotage; acts of terrorism; epidemics; riots; interruptions, loss or malfunctions of utilities; computer (hardware or software) or communications services; accidents; labor disputes; acts of civil or military authority or governmental actions; it being understood that the Auction Agent shall use reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances.

(e) In no event shall the Auction Agent be responsible or liable for special, indirect or consequential loss or damage of any kind whatsoever (including, but not limited to, loss of profit), even if the Auction Agent has been advised of the likelihood of such loss or damage and regardless of the form of action.

3.3 Auction Agent's Disclaimer. The Auction Agent makes no representation as to the validity or adequacy of this Agreement, the Auction Agency Agreement or the shares of Preferred Shares of any series.

4. Miscellaneous

4.1 Termination. Any party to this Agreement may terminate the Agreement at any time on five days' notice to the other parties to such Agreement, provided that the Fund party to the Agreement shall not terminate the Agreement unless at least one Broker-Dealer Agreement would be in effect for each series of Preferred Shares of the Fund after such termination. Each Agreement shall automatically terminate with respect to any series of Preferred Shares with respect to which the Auction Agency Agreement has terminated.

4.2 Force Majeure. Neither party to this Agreement shall be responsible or liable for any failure or delay in the performance of its obligations under this Agreement arising out of or caused, directly or indirectly, by circumstances beyond its reasonable control, including, without limitation, acts of God; earthquakes; fires; floods; wars; civil or military disturbances; sabotage; epidemics; riots; interruptions, loss or malfunctions or utilities; computer (hardware or software) or communications services; accidents; labor disputes; acts of civil or military authority or governmental actions; it being understood that the parties shall use reasonable efforts which are consistent with accepted practices in the banking industry to resume performance as soon as practicable under the circumstances.

4.3 Participant in Securities Depository. BD is, and shall remain for the term of this Agreement, a member of, or participant in, the Securities Depository (or an affiliate of such a member participant).

4.4 Payment of Dividends in Same-Day Funds. BD represents that it
(or if BD does not act as Agent Member, one of its affiliates) shall make all dividend payments

11

on the Preferred Shares available in same-day funds on each Dividend Payment Date to customers that use BD or affiliate as Agent Member.

4.5 Communications. Except (i) communications authorized to be by telephone by this Agreement or the Auction Procedures and (ii) communications in connection with Auctions (other than those expressly required to be in writing), all notices, requests and other communications to any party hereunder shall be in writing (including telecopy or similar writing) and shall be given to such party, addressed to it, at its addressed or telecopy number set forth below:

If to BD, to the address or telecopy number as set forth in the Acceptance Letter.

If to the Auction Agent, to the address or telecopy number as set forth in the Request Letter.

If to the Fund, addressed:

Calamos Convertible and High Income Fund 1111 East Warrenville Road Naperville, Illinois 60563-1493 Attention: James S. Hamman, Jr.

Telephone No.: (630) 245-7296

or such other address or telecopy number as such party may hereafter specify for such purpose by notice to the other parties. Each such notice, request or communication shall be effective when delivered at the address specified herein. Communications shall be given on behalf of BD by a BD Officer and on behalf of the Auction Agent by an Authorized Officer. BD may record telephone communications with the Auction Agent.

4.6 Entire Agreement. This Agreement contains the entire agreement among the parties hereto relating to the subject matter hereof, and there are no other representations, endorsements, promises, agreements or understandings, oral, written or implied, among the parties hereto relating to the subject matter hereof. This Agreement supersedes and terminates all prior Broker-Dealer Agreements between the parties.

4.7 Benefits. Nothing in this Agreement, express or implied, shall give to any person, other than the Fund, the Auction Agent, BD and their respective successors and assigns, any benefit of any legal or equitable right, remedy or claim hereunder.

4.8 Amendment; Waiver.

(a) This Agreement shall not be deemed or construed to be modified, amended, rescinded, canceled or waived, in whole or in part, except by a written instrument signed by a duly authorized representative of the party to be charged.

12

(b) Failure of any party hereto to exercise any right or remedy hereunder in the event of a breach hereof by any other party shall not constitute a waiver of any such right or remedy with respect to any subsequent breach.

4.9 Successors and Assigns. This Agreement shall be binding upon, inure to the benefit of, and be enforceable by, the respective successors and assigns of each of the Auction Agent and BD. This Agreement may not be assigned by either party hereto absent the prior written consent of the other party; provided, however, that this Agreement may be assigned by the Auction Agent to a successor Auction Agent selected by the Fund without the consent of BD.

4.10 Severability. If any clause, provision or section hereof shall be ruled invalid or unenforceable by any court of competent jurisdiction, the invalidity or unenforceability of such clause, provision or section shall not affect any of the remaining clauses, provisions or sections thereof.

4.11 Execution in Counterparts. This Agreement may be executed in several counterparts, each of which shall be an original and all of which shall constitute but one and the same instrument.

4.12 Governing Law. This Agreement shall be governed by and construed in accordance with the laws of the State of New York applicable to agreements made and to be performed in said State.

13

EXHIBIT A

SETTLEMENT PROCEDURES

A-1

EXHIBIT B

[Name of Fund]

$_____ ______ PREFERRED SHARES

Series ____

AUCTION DATE: _____________

------------------------------------------------------------------------------------------------------------------------------------
ISSUE: ___________________     SERIES: _________
------------------------------------------------------------------------------------------------------------------------------------
THE UNDERSIGNED Broker-Dealer SUBMITS THE FOLLOWING ORDERS ON BEHALF OF THE BIDDER(S) LISTED BELOW:
------------------------------------------------------------------------------------------------------------------------------------
ORDERS BY EXISTING HOLDERS-                          NUMBER OF SHARES OF             ORDERS BY                    NUMBER OF SHARES
                                                      PREFERRED SHARES           POTENTIAL HOLDERS-             OF PREFERRED SHARES
------------------------------------------------------------------------------------------------------------------------------------
                                                                                  POTENTIAL HOLDER              BID/RATE
------------------------------------------------------------------------------------------------------------------------------------

EXISTING HOLDER                          HOLD        BID/RATE             SELL   1.                                      /
                                                                                    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
1.                                                            /                  2.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------

------------------------------------------------------------------------------------------------------------------------------------
2.                                                            /                  3.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
3.                                                            /                  4.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
4.                                                            /                  5.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
5.                                                            /                  6.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
6.                                                            /                  7.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
7.                                                            /                  8.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
8.                                                            /                  9.                                      /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
9.                                                            /                  10.                                     /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
10.                                                           /                  11.                                     /
   ------                      ------    ---------   ------------------  -------    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
                                                                                 12.                                     /
                                                                                    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
NOTES:                                                                           13.                                     /
                                                                                    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
                                                                                 14.                                     /
                                                                                    ------            -------    ------------------
------------------------------------------------------------------------------------------------------------------------------------
1.   If one or more Orders covering in the aggregate  more than the number of
     outstanding  shares of                                                      15.                                     /
                                                                                    ------            -------    ------------------
     Preferred  Shares held by any Existing holder are submitted, such Orders
     shall be considered  valid in the order of priority set forth in the
     Auction Procedures.

------------------------------------------------------------------------------------------------------------------------------------
2.   A Hold Order or Sell Order may be placed only by an Existing Holder
     covering a number of shares of Preferred Shares not greater than the
     number of shares of Preferred Shares currently held by such Existing
     Holder.

------------------------------------------------------------------------------------------------------------------------------------
3.   Potential Holders may make Bids only, each of which must specify a rate. If
     more than one Bid is submitted on behalf of any Potential Holder, each Bid
     submitted shall be a separate Bid with the rate specified.

4.   Bids may contain no more than three figures to the right of the decimal
     point (.001 of 1%).
------------------------------------------------------------------------------------------------------------------------------------

B-1

------------------------------------------------------------------------------------------------------------------------------------

[AUCTION AGENT] AUCTION BID FORM                                 NAME OF Broker-Dealer:
                                                                 AUTHORIZED
Submit to:                                                       SIGNATURE:

                                                                 TOTAL NUMBER OF ORDERS ON THIS BID FORM:  ____________________
------------------------------------------------------------------------------------------------------------------------------------

B-2

EXHIBIT C

(To be used only for transfers made
other than pursuant to in Auction)

[NAME OF FUND]
PREFERRED SHARES,
SERIES -- ("______")
TRANSFER FORM

We are (check one):

The Existing Holder named below;

The Broker-Dealer for such Existing Holding; or

The Agent Member for such Existing Holder.

We hereby notify you that such Existing Holder has transferred _____ shares of the above series of Preferred Shares to __________________________.


(Name of Existing Holder)


(Name of Broker-Dealer)


(Name of Agent Member)

By:
Printed Name:

C-1

EXHIBIT D

(To be used only for failures to
deliver shares of PREFERRED SHARES
sold pursuant to an Auction)

[NAME OF FUND]

PREFERRED SHARES, SERIES____ ("_____")

NOTICE OF A FAILURE TO DELIVER

Complete either I or II

I. We are a Broker-Dealer for _______________ (the "Purchaser"), which purchased ____ shares of the above series of Preferred Shares in the Auction held on _______________ from the seller of such shares.

II. We are a Broker-Dealer for ________________ (the "Seller"), which sold _____ shares of the above series of Preferred Shares in the Auction held on _______________ to the purchaser of such shares.

We hereby notify you that (check one) --

[ ] the Seller failed to deliver such shares of Preferred Shares to the Purchaser

[ ] the Purchaser failed to make payment to the Seller upon delivery of such shares of Preferred Shares

Name:

(Name of Broker-Dealer)

By:

Printed Name:


Title:

D-1

EXHIBIT E

[Form of Broker-Dealer Acceptance Letter]

Calamos Asset Management, Inc.

________________, 2003

[Broker-Dealer]
[Address]

Ladies and Gentlemen:

Reference is made to the Calamos Broker-Dealer Agreement-Basic Terms for Acting as a Broker-Dealer Relating to Preferred Shares ("Preferred Shares") dated , 2003, receipt of which is hereby acknowledged by you (the "Basic Terms"). For purposes of this letter ("Acceptance Letter") (a) "Fund" shall mean any closed-end investment company registered under the Investment Company Act of 1940, as amended, for which Calamos Asset Management, Inc. acts as investment adviser; (b) except as otherwise provided below, the Basic Terms are incorporated herein by reference, you shall be considered BD for all purposes thereof, The Bank of New York shall be considered the Auction Agent for all purposes thereof, and each Fund shall be considered a Fund for all purposes thereof.

We hereby request that you act as a Broker-Dealer for the Preferred Shares of each series, of each Fund that executes a letter, substantially in the form attached hereto as Exhibit A or Exhibit B, as appropriate, appointing you as a Broker-Dealer ("Request Letter"). You hereby (a) accept such appointment as a Broker-Dealer for each series of Preferred Shares of each Fund identified in a Request Letter and (b) agree to act as BD in accordance with the Basic Terms; provided, however, that:

(1) for purposes of the Basic Terms, and notwithstanding any provision to the contrary, your address, telecopy number and telephone number for communications pursuant to the Basic Terms shall be as follows:

and the address, telecopy number and telephone number of the Auction Agent for communications pursuant to the Basic Terms shall be as follows:

E-1

(2) notwithstanding any provisions of the Basic Terms to the contrary, except as otherwise set forth herein, your appointment as Broker-Dealer extends to each series of Preferred Shares issued by a Fund.

You hereby acknowledge that, notwithstanding any provision of the Basic Terms to the contrary, the Fund may (a) upon five business days' notice to the Auction Agent and you, amend, alter or repeal any of the provisions contained in the Basic Terms, it being understood and agreed that you shall be deemed to have accepted any such amendment, alteration or repeal if, after the expiration of such five business day period, you submit an Order to the Auction Agent in respect of the shares of Preferred Shares of a Fund or Funds to which such amendment, alteration or repeal relates, and (b) upon two business days' notice to the Auction Agent and you, exclude you from participating as a Broker-Dealer in any particular Auction for any particular series of Preferred Shares.

This Acceptance Letter shall be deemed to form part of the Basic Terms.

Capitalized Terms not defined in this Acceptance Letter shall have the meanings ascribed to them in the Basic Terms.

[Signature Page Follows]

E-2

If the foregoing terms are acceptable to you, please so indicate in the space provided below. This Acceptance Letter may be executed in any number of counterparts, each of which shall be an original, but all of which shall constitute one and the same instrument.

CALAMOS ASSET MANAGEMENT, INC.

By:

Name:


Title:

Accepted by and Agreed to as of
the date first written above:

THE BANK OF NEW YORK


[Broker-Dealer]

                                        By:
                                           ------------------------------------
By:                                        Name:
   ----------------------------            Title:
   Name:

Title:

E-3

EXHIBIT A TO ACCEPTANCE LETTER

                            [Form of Request Letter]

                                                         ----------------, -----

FROM:    All investment companies registered under the Investment Company Act of
         1940, as amended, for which Calamos Asset Management, Inc. acts as
         investment adviser and whose registration statements relating to shares
         of Preferred Shares have been declared effective by the Securities and
         Exchange Commission on or prior to the date hereof.

TO:      Calamos Asset Management, Inc.
         The Bank of New York

Ladies and Gentlemen:

Reference is made to (a) the Calamos Broker-Dealer Agreement -- Basic Terms for Acting as a Broker-Dealer relating to Preferred Shares ("Preferred Shares") dated ____________ __, 2003, receipt of which is hereby acknowledged by you (the "Broker-Dealer Basic Terms"); and (b) the Calamos Auction Agency Agreement -- Basic Terms for Acting as Auction Agent relating to Preferred Shares dated ____________ __, 2003, receipt of which is hereby acknowledged by you (the "Auction Agency Basic Terms"). For purposes of this letter ("Request Letter"), (a) "Fund" shall mean any closed-end investment company registered under the Investment Company Act of 1940, as amended, for which Calamos Asset Management, Inc. acts as investment adviser; (b) the Broker-Dealer Basic Terms are incorporated herein by reference, each Broker-Dealer listed on Exhibit A hereto shall be considered BD for all purposes thereof, The Bank of New York shall be considered the Auction Agent for all purposes thereof, and each Fund referred to on Exhibit B hereto shall be considered a Fund for all purposes thereof; (c) the Auction Agency Basic Terms are incorporated herein by reference, The Bank of New York shall be considered the Auction Agent for all purposes thereof, and each Fund referred to on Exhibit B hereto shall be considered a Fund for all purposes thereof.

We hereby appoint the Broker-Dealers listed on Exhibit A hereto as Broker-Dealers for the Preferred Shares of each series of each Fund referred to on Exhibit B hereto. Each such Broker-Dealer will act as BD in respect of such series in accordance with the Broker-Dealer Basic Terms; provided, however, that for purposes of any such Broker-Dealer Agreement or the Broker-Dealer Basic Terms, and notwithstanding any provision of any Broker-Dealer Agreement to the contrary, The Bank of New York's address, telecopy number and telephone number for communications pursuant to such Broker-Dealer Agreement or the Broker-Dealer Basic Terms shall be as follows:

A-1





The Bank of New York agrees to act as Auction Agent with respect to shares of each series of Preferred Shares of each Fund referred to on Exhibit B hereto in accordance with the Auction Agency Basic Terms.

This Request Letter shall be deemed to form part of the Auction Agency Basic Terms.

Capitalized terms not defined in this Request Letter shall have the meanings ascribed to them in the relevant Broker-Dealer Basic Terms or Auction Agency Basic Terms, as the case may be.

[Signature Page Follows]

A-2

If the foregoing terms are acceptable to you, please so indicate in the space provided below. This Request Letter may be executed in any number of counterparts, each of which shall be an original, but all of which shall constitute one and the same instrument.

All investment companies registered under the Investment Company Act of 1940, as amended, for which Calamos Asset Management, Inc. acts as investment adviser and whose registration statements relating to shares of Preferred Shares have been declared effective by the Securities and Exchange Commission on or prior to the date hereof.

By:
Name:


Title:

Accepted and Agreed to as of
the date first written above:

CALAMOS ASSET MANAGEMENT, INC.      THE BANK OF NEW YORK

By:                                 By:
   ----------------------------        ----------------------------------------
     Name:                             Name:
     Title:                            Title:

cc: [Broker-Dealers]

A-3

EXHIBIT A TO REQUEST LETTER

[LIST OF BROKER-DEALERS]

A-1

EXHIBIT B TO REQUEST LETTER

Each Fund whose registration statement relating to shares of Preferred Shares has been declared effective by the Securities and Exchange Commission on or prior to the date of the Request Letter to which this Exhibit B is attached.

B-1

EXHIBIT B TO ACCEPTANCE LETTER

[Form of Request Letter]

[Name(s) of Fund(s)]

--------------, -----

Ladies and Gentlemen:

Reference is made to (a) the Calamos Broker-Dealer Agreement -- Basic Terms for Acting as a Broker-Dealer relating to Preferred Shares ("Preferred Shares") dated ____________ __, 2003, receipt of which is hereby acknowledged by you (the "Broker-Dealer Basic Terms") and (b) the Calamos Auction Agency Agreement -- Basic Terms for Acting as Auction Agent dated ____________ __, 2003, receipt of which is hereby acknowledged by you (the "Auction Agency Basic Terms"). For purposes of this letter ("Request Letter"), (a) "Fund" shall mean each undersigned closed-end investment company registered under the Investment Company Act of 1940, as amended, for which Calamos Asset Management, Inc. acts as investment adviser; (b) the Broker-Dealer Basic Terms are incorporated herein by reference, each Broker-Dealer listed on Exhibit A hereto shall be considered Broker-Dealer for all purposes thereof, The Bank of New York shall be considered the Auction Agent for all purposes thereof, and each Fund shall be considered a Fund for all purposes thereof; and (c) the Auction Agency Basic Terms are incorporated herein by reference, The Bank of New York shall be considered the Auction Agent for all purposes thereof, and each Fund shall be considered a Fund for all purposes thereof.

Each Fund hereby appoints the Broker-Dealers listed on Exhibit A hereto as Broker-Dealers for each series of Preferred Shares of such Fund. Each such Broker-Dealer will act as Broker-Dealer in respect of each such series in accordance with the Broker-Dealer Basic Terms; provided, however, that for purposes of the Broker-Dealer Basic Terms, The Bank of New York's address, telecopy number and telephone number for communications pursuant to the Broker-Dealer Basic Terms shall be as follows:





The Bank of New York agrees to act as Auction Agent with respect to shares of each series of Preferred Shares of each Fund in accordance with the Auction Agency Basic Terms.

This Request Letter shall be deemed to form part of the Auction Agency Basic Terms.

B-1

Capitalized terms not defined in this Request Letter shall have the meanings ascribed to them in the Broker-Dealer Basic Terms or Auction Agency Basic Terms, as the case may be.

If the foregoing terms are acceptable to you, please so indicate in the space provided below. This Request Letter may be executed in any number of counterparts, each of which shall be an original, but all of which shall constitute one and the same instrument.

[NAME(S) OF FUND(S)]

By:
Name:


Title:

Accepted and Agreed to as of
the date first written above:

CALAMOS ASSET MANAGEMENT, INC.                THE BANK OF NEW YORK


By:                                           By:
   -------------------------------               -------------------------------
   Name:                                         Name:
   Title:                                        Title:

cc: [Broker-Dealers listed on Exhibit A]

B-2

EXHIBIT A TO REQUEST LETTER

[LIST OF BROKER-DEALERS]

A-1

EXHIBIT k.4

Book Entry Only Auction-Rate/Money Market Preferred/ and Remarketed Preferred Securities

LETTER OF REPRESENTATIONS

[To be Completed by Issuer and Trust Company]


[Name of Issuer]


[Name of Trust Company]


[Date]

Attention: General Counsel's Office
THE DEPOSITORY TRUST COMPANY
55 Water Street 49th Floor
New York, NY 10041-0099

Re:



[Issue description, including CUSIP number (the "Securities")]

Ladies and Gentlemen:

This letter sets forth our understanding with respect to certain matters relating to the Securities. Trust Company shall act as transfer agent, registrar, dividend disbursing agent, redemption agent or other such agent with respect to the Securities. The Securities have been issued pursuant to a prospectus, private placement memorandum, or other such document authorizing the issuance of the Securities dated ________________________ (the "Document"). _______________________________ is distributing the Securities through the
["Underwriter/Placement Agent"]


Depository Trust Company ("DTC").

To induce DTC to accept the Securities as eligible for deposit at DTC, and to act in accordance with its Rules with respect to the Securities, Issuer and Trust Company make the following representations to DTC:

1. Prior to closing on the Securities on _______________ there shall be deposited with DTC one or more Security certificates registered in the name of DTC's nominee, Cede & Co., which represents 100% of the offering value of the Securities. Said certificate(s) shall remain in DTC's custody as provided in the Document. If, however, the aggregate principal amount of the Securities exceeds $400 million, one certificate shall be issued with respect to each $400 million of principal amount and an additional certificate shall be issued with respect to any remaining principal amount. Each Security certificate shall bear the following legend:

Unless this certificate is presented by an authorized representative of The Depository Trust Company, a New York corporation ("DTC"), to Issuer or its agent for registration of transfer, exchange, or payment, and any certificate issued is registered in the name of Cede & Co. or in such other name as is requested by an authorized representative of DTC (and any payment is made to Cede & Co. or to such other entity as is requested by an authorized representative of DTC), ANY TRANSFER, PLEDGE, OR OTHER USE HEREOF FOR VALUE OR OTHERWISE BY OR TO ANY PERSON IS WRONGFUL inasmuch as the registered owner hereof, Cede & Co., has an interest herein.

2. Issuer: (a) understands that DTC has no obligation to, and will not, communicate to its participants ("Participants") or to any person having an interest in the Securities any information contained in the Security certificate(s); and (b) acknowledges that neither DTC's Participants nor any person having an interest in the Securities shall be deemed to have notice of the provisions of the Security certificate(s) by virtue of submission of such certificate(s) to DTC.

3. In the event of any solicitation of consents from or voting by holders of the Securities, Issuer shall establish a record date for such purposes (with no provision for revocation of consents or votes by subsequent holders) and shall send notice of such record date to DTC no fewer than 15 calendar days in advance of such record date. Notices to DTC pursuant to this Paragraph by telecopy shall be directed to DTC's Reorganization Department, Proxy Unit at (212) 855-5181 or (212) 855-5182. If the party sending the notice does not receive a telecopy receipt from DTC confirming that the notice has been received, such party shall telephone (212) 855-5202. Notices to DTC pursuant to this Paragraph, by mail or by any other means, shall be sent to:

Supervisor, Proxy Unit Reorganization Department The Depository Trust Company 55 Water Street 50th Floor New York, NY 10041-0099

-2-

4. In the event of a full or partial redemption of the Securities, Issuer or Trust Company shall send a notice to DTC specifying: (a) the number of Securities to be redeemed; and (b) the date such notice is to be distributed to Security holders (the "Publication Date"). Such notice shall be sent to DTC by a secure means (e.g., legible telecopy, registered or certified mail, overnight delivery) in a timely manner designed to assure that such notice is in DTC's possession no later than the close of business on the business day before or, if possible, two business days before the Publication Date. Issuer or Trust Company shall forward such notice either in a separate secure transmission for each CUSIP number or in a secure transmission for multiple CUSIP numbers (if applicable) which includes a manifest or list of each CUSIP number submitted in that transmission. (The party sending such notice shall have a method to verify subsequently the use of such means and the timeliness of such notice.) The Publication Date shall be no fewer than 30 days nor more than 60 days prior to the redemption date. Notices to DTC pursuant to this Paragraph by telecopy shall be directed to DTC's Call Notification Department at (516) 227-4164 or (516) 227-4190. If the party sending the notice does not receive a telecopy receipt from DTC confirming that the notice has been received, such party shall telephone (516) 227-4070. Notices to DTC pursuant to this Paragraph, by mail or by any other means, shall be sent to:

Manager, Call Notification Department The Depository Trust Company 711 Stewart Avenue Garden City, NY 11530-4719

5. In the event of an invitation to tender the Securities (including mandatory tenders, exchanges, and capital changes), notice by Issuer or Trust Company to Security holders specifying the terms of the tender and the Publication Date of such notice shall be sent to DTC by a secure means in the manner set forth in the preceding Paragraph. Notices to DTC pursuant to this Paragraph and notices of other corporate actions by telecopy shall be directed to DTC's Reorganization Department at (212) 855-5488. If the party sending the notice does not receive a telecopy receipt from DTC confirming that the notice has been received, such party shall telephone (212) 855-5290. Notices to DTC pursuant to this Paragraph, by mail or by any other means, shall be sent to:

Manager, Reorganization Department Reorganization Window The Depository Trust Company 55 Water Street 50th Floor New York, NY 10041-0099

6. All notices and payment advices sent to DTC shall contain the CUSIP number of the Securities.

7. The Document indicates that the dividend rate for the Securities may vary from time to time. Absent other existing arrangements with DTC, Issuer or Trust Company shall give DTC notice of each such change in the dividend rate, on the same day that the new rate is determined, by telephoning DTC's Dividend Announcement Section at (212) 855-4550, or by telecopy sent to (212) 855-4555. Such verbal or telecopy notice shall be followed by prompt written confirmation sent by

-3-

a secure means (e.g., legible telecopy, registered or certified mail, overnight delivery) in a timely manner designed to assure that such notice is in DTC's possession no later than the close of business on the business day before or, if possible, two business days before the Publication Date. Issuer or Agent shall forward such notice either in a separate secure transmission for each CUSIP number or in a secure transmission for multiple CUSIP numbers (if applicable) which includes a manifest or list of each CUSIP number submitted in that transmission. (The party sending such notice shall have a method to verify subsequently the use and timeliness of such notice.) Notices to DTC pursuant to this Paragraph, by mail or by any other means, shall be sent to:

Manager, Announcements Dividend Department
The Depository Trust Company 55 Water Street 25th Floor New York, NY 10041-0099

8. The Document indicates that each purchaser of Securities must sign a purchaser's letter which contains provisions restricting transfer of the Securities purchased. Issuer and Trust & Co. shall be entitled to all voting rights applicable to the Securities and to receive the full amount of all dividends, liquidation proceeds, and redemption proceeds payable with respect to the Securities, even if the credits of Securities to the DTC accounts of any DTC Participant result from transfers or failures to transfer in violation of the provisions of the purchaser's letter. Issuer and Trust Company acknowledge that DTC shall treat any Participant having Securities credited to its DTC accounts as entitled to the full benefits of ownership of such Securities. Without limiting the generality of the preceding sentence, Issuer and Trust Company acknowledge that DTC shall treat any Participant having Securities credited to its DTC accounts as entitled to receive dividends, distributions, and voting rights, if any, in respect of Securities and, subject to Paragraphs 12 and 13, to receive certificates evidencing Securities if such certificates are to be issued in accordance with Issuer's certificate of incorporation. (The treatment by DTC of the effects of the crediting by it of Securities to the accounts of Participants described in the preceding two sentences shall not affect the rights of Issuer, participants in auctions relating to the Securities, purchasers, sellers, or holders of Securities against any Participant.) DTC shall not have any responsibility to ascertain whether any transfer of Securities is made in accordance with the provisions of the purchaser's letter.

9. Issuer or Trust Company shall provide a written notice of dividend payment and distribution information to DTC as soon as the information is available. Issuer or Trust Company shall provide this information to DTC electronically, as previously arranged by Issuer or Trust Company and DTC, as soon as the information is available. If electronic transmission has not been arranged, absent any other arrangements between Issuer or Trust Company and DTC, such information shall be sent by telecopy to DTC's Dividend Department at
(212) 855-4555 or (212) 855-4556, and receipt of such notices shall be confirmed by telephoning (212) 855-4550. Notices to DTC pursuant to this Paragraph, by mail or by any other means, shall be addressed as indicated in Paragraph 7.

-4-

10. Dividend payments and distributions shall be received by Cede & Co., as nominee of DTC, or its registered assigns, in same-day funds no later than 2:30 p.m. (Eastern Time) on the payment date. Issuer shall remit by 1:00 p.m. (Eastern Time) on the payment date, dividend and distribution payments due Trust Company, or at such earlier time as may be required by Trust Company to guarantee that DTC shall receive payment in same-day funds no later than 2:30
p.m. (Eastern Time) on the payment date. Absent any other arrangements between Issuer or Trust Company and DTC, such funds shall be wired to the Dividend Deposit Account number that will be stamped on the signature page hereof at the time DTC executes this Letter of Representations.

11. Issuer or Trust Company shall provide DTC, no later than 12:00 noon (Eastern Time) on each payment date, automated notification of CUSIP-level detail. If the circumstances prevent the funds paid to DTC from equaling the dollar amount associated with the detail payments by 12:00 noon (Eastern Time), Issuer or Trust Company must provide CUSIP-level reconciliation to DTC no later than 2:30 p.m. (Eastern Time). Reconciliation must be provided by either automated means or written format. Such reconciliation notice, if sent by telecopy, shall be directed to DTC's Dividend Department at (212) 855-4633, and receipt of such reconciliation notice shall be confirmed by telephoning
(212) 855-4430.

12. Redemption payments shall be received by Cede & Co., as nominee of DTC, or its registered assigns, in same-day funds no later than 2:30 p.m. (Eastern Time) on the payment date. Issuer shall remit by 1:00 p.m. (Eastern Time) on the payment date all such redemption payments due Trust Company, or at such earlier time as required by Trust Company to guarantee that DTC shall receive payment in same-day funds no later that 2:30 p.m. (Eastern Time) on the payment date. Absent any other arrangements between Issuer or Trust Company and DTC, such funds shall be wired to the Redemption Deposit Account number that will be stamped on the signature page hereof at the time DTC executes this Letter of Representations.

13. Reorganization payments and CUSIP-level detail resulting from corporate actions (such as tender offers, remarketings, or mergers) shall be received by Cede & Co., as nominee of DTC, or its registered assigns, in same-day funds no later than 2:30 p.m. (Eastern Time) on the payment date. Issuer shall remit by 1:00 p.m. (Eastern Time) on the payment date all such reorganization payments due Trust Company, or at such earlier time as required by Trust Company to guarantee that DTC shall receive payment in same-day funds no later than 2:30 p.m. (Eastern Time) on the payment date. Absent any other arrangements between Issuer or Trust Company and DTC, such funds shall be wired to the Reorganization Deposit Account number that will be stamped on the signature page hereof at the time DTC executes this Letter of Representations.

14. DTC my direct Issuer or Trust Company to use any other number or address as the number or address to which notices or payments may be sent.

15. In the event of a redemption acceleration, or any similar transaction (e.g., tender made and accepted in response to Issuer's or Trust Company's invitation) necessitating a reduction in the number of Securities outstanding, or an advance refunding of part of the Securities outstanding DTC, in its discretion: (a) may request Issuer or Trust Company to issue and authenticate a new Security certificate; or (b) may make an appropriate notation on the Security certificate indicating the date and amount of such reduction in the number of Securities outstanding, except in the case of final

-5-

redemption, in which case the certificate will be presented to Issuer and Trust Company prior to payment, if required.

16. In the event that Issuer determines that beneficial owners of Securities shall be able to obtain certificated Securities, Issuer or Trust Company shall notify DTC of the availability of certificates. In such event, Issuer or Trust Company shall issue, transfer, and exchange certificates in appropriate amounts, as required by DTC and others.

17. DTC may discontinue providing its services as securities depository with respect to the Securities at any time by giving reasonable notice to Issuer or Trust Company (at which time DTC will confirm with Issuer or Trust Company the aggregate principal amount of Securities outstanding). Under such circumstances, at DTC's request, Issuer and Trust Company shall cooperate fully with DTC by taking appropriate action to make available one or more separate certificates evidencing Securities to any DTC Participant having Securities credited to its DTC accounts.

18. Issuer herby authorizes DTC to provide to Trust Company listings of Participants' holdings, known as Security Position Listings ("SPLs") with respect to the Securities from time to time at the request of Trust Company. Issuer also authorizes DTC, in the event of a partial redemption of Securities, to provide Trust Company, upon request, with the names of those Participants whose positions in Securities have been selected for redemption by DTC. DTC will use its best efforts to notify Trust Company of those Participants whose positions in Securities have been selected for redemption by DTC. Issuer authorizes and instructs Trust Company to provide DTC with such signatures, examples of signatures, and authorizations to act as may be deemed necessary or appropriate by DTC to permit DTC to discharge its obligations to its Participants and appropriate regulatory authorities. DTC charges a customary fee for such SPLs. This authorization, unless revoked by Issuer, shall continue with respect to the Securities while any Securities are on deposit at DTC, until and unless Trust Company shall no longer be acting. In such event, Issuer shall provide DTC with similar evidence, satisfactory to DTC, of the authorization of any successor thereto so to act. Requests for SPLs shall be directed to the Proxy Unit of DTC's Reorganization Department at (212) 855-5181 or (212) 855-5812. Receipt of such requests shall be confirmed by telephoning (212) 855-5202. Delivery by mail or by any other means, with respect to such SPL request, shall be directed to the address indicated in Paragraph 3.

19. Nothing herein shall be deemed to require Trust Company to advance funds on behalf of Issuer.

20. This Letter of Representations may be executed in any number of counterparts, each of which when so executed shall be deemed to be an original, but all such counterparts together shall constitute but one and the same instrument.

21. This Letter of Representations shall be governed by, and construed in accordance with, the laws of the State of New York, without giving effect to principles of conflicts of law.

22. The sender of each notice delivered to DTC pursuant to this Letter of Representations is responsible for confirming that such notice was properly received by DTC.

-6-

23. Issuer recognizes that DTC does not in any way undertake to, and shall not have any responsibility to, monitor or ascertain the compliance of any transactions in the Securities with the following, as amended from time to time: (a) any exemptions from registration under the Securities Act of 1933;
(b) the Investment Company Act of 1940; (c) the Employee Retirement Income Security Act of 1974; (d) the Internal Revenue Code of 1986; (e) any rules of any self-regulatory organizations (as defined under the Securities Exchange Act of 1934); or (f) any other local, state, or federal laws or regulations thereunder.

24. Issuer and Trust Company shall comply with the applicable requirements stated in DTC's Operational Arrangements, as they may be amended from time to time. DTC's Operational Arrangements are posted on DTC's website at "www.DTC.org."

25. The following rider(s), attached hereto, are hereby incorporated into this Letter of Representations:



-7-

NOTES:

A. IF THERE IS A TRUST COMPANY (AS DEFINED IN
THIS LETTER OF REPRESENTATIONS), TRUST
COMPANY, AS WELL AS ISSUER, MUST SIGN THIS
LETTER. IF THERE IS NO TRUST COMPANY, IN SIGNING THIS LETTER ISSUER ITSELF UNDERTAKES TO PERFORM ALL OF THE OBLIGATIONS SET FORTH HEREIN.

B. SCHEDULE B CONTAINS STATEMENTS THAT DTC BELIEVES ACCURATELY DESCRIBE DTC, THE METHOD OF EFFECTING BOOK-ENTRY TRANSFERS OF
SECURITIES DISTRIBUTED THROUGH DTC, AND
CERTAIN RELATED MATTERS.

Very truly yours,


[Issuer]

By: ________________________________
[Authorized Officer's Signature]


[Trust Company]

By: ________________________________
[Authorized Officer's Signature]

Received and Accepted:
THE DEPOSITORY TRUST COMPANY

cc: Underwriter
Underwriter's Counsel

-8-

SCHEDULE A



[Describe Issue]

CUSIP Number Share Total Value ($Amount)

-9-

SCHEDULE B

SAMPLE OFFERING DOCUMENT LANGUAGE
DESCRIBING BOOK-ENTRY-ONLY ISSUANCE
(Prepared by DTC-bracketed material may be applicable only to certain issues)

1. The Depository Trust Company ("DTC"), New York, NY, will act as securities depository for the securities (the "Securities"). The Securities will be issued as fully-registered securities registered in the name of Cede & Co. (DTC's partnership nominee) or such other name as may be requested by an authorized representative of DTC. One fully-registered Security certificate will be issued for [each issuer of] the Securities, [each] in the aggregate principal amount of such issue, and will be deposited with DTC. [If, however, the aggregate principal amount of [any] issue exceeds $400 million, one certificate will be issued with respect to each $400 million of principal amount and an additional certificate will be issued with respect to any remaining principal amount of such issue.]

2. DTC is a limited-purpose trust company organized under the New York Banking Law, a "banking organization" within the meaning of the New York Banking Law, a member of the Federal Reserve System, a "clearing corporation" within the meaning of the New York Uniform Commercial Code, and a "clearing agency" registered pursuant to the provisions of Section 17A of the Securities Exchange Act of 1934. DTC holds securities that its participants ("Direct Participants") deposit with DTC. DTC also facilitates the settlement among Direct Participants of securities transactions, such as transfers and pledges, in deposited securities through electronic computerized book-entry changes in Direct Participants' accounts, thereby eliminating the need for physical movement of securities certificates. Direct Participants include securities brokers and dealers, banks, trust companies, clearing corporations, and certain other organizations. DTC is owned by a number of its Direct Participants and by the New York Stock Exchange, Inc., the American Stock Exchange LLC, and the National Association of Securities Dealers, Inc. Access to the DTC system is also available to others such as securities brokers and dealers, banks, and trust companies that clear through or maintain a custodial relationship with a Direct Participant, either directly or indirectly ("Indirect Participants"). The Rules applicable to DTC and its Direct and Indirect Participants are on file with the Securities and Exchange Commission.

3. Purchases of Securities under the DTC system must be made by or through Direct Participants, which will receive a credit for the Securities on DTC's records. The ownership interest of each actual purchaser of each Security ("Beneficial Owner") is in turn to be recorded on the Direct and Indirect Participants' records. Beneficial Owners will not receive written confirmation from DTC of their purchase, but Beneficial Owners are expected to receive written confirmations providing details of the transaction, as well as periodic statements of their holdings, from the Direct or Indirect Participant through which the Beneficial Owner entered into the transaction. Transfers of ownership interests in the Securities are to be accomplished by entries made on the books of Direct and Indirect Participants acting on behalf of Beneficial Owners. Beneficial Owners will not receive certificates representing their ownership interests in Securities, except in the event that use of the book-entry system for the Securities is discontinued.

-10-

4. To facilitate subsequent transfers, all Securities deposited by Direct Participants with DTC are registered in the name of DTC's partnership nominee, Cede & Co. or such other name as may be requested by an authorized representative of DTC. The deposit of Securities with DTC and their registration in the name of Cede & Co. or such other nominee do not effect any change in beneficial ownership. DTC has no knowledge of the actual Beneficial Owners of the Securities; DTC's records reflect only the identity of the Direct Participants to whose accounts such Securities are credited, which may or may not be the Beneficial Owners. The Direct and Indirect Participants will remain responsible for keeping account of their holdings on behalf of their customers.

5. Conveyance of notices and other communications by DTC to Direct Participants, by Direct Participants to Indirect Participants, and by Direct Participants and Indirect Participants to Beneficial Owners will be governed by arrangements among them, subject to any statutory or regulatory requirements as may be in effect from time to time. [Beneficial Owners of Securities may wish to take certain steps to augment transmission to them of notices of significant events with respect to the Securities, such as redemptions, tenders, defaults, and proposed amendments to the security documents. Beneficial Owners of Securities may wish to ascertain that the nominee holding the Securities for their benefit has agreed to obtain and transmit notices to Beneficial Owners, or in the alternative, Beneficial Owners may wish to provide their names and addresses to the registrar and request that copies of the notices be provided directly to them.]

[6. Redemption notices shall be sent to DTC. If less than all of the Securities within an issue are being redeemed, DTC's practice is to determine by lot the amount of the interest of each Direct Participant in such issue to be redeemed.]

7. Neither DTC nor Cede & Co. (nor such other DTC nominee) will consent or vote with respect to the Securities. Under its usual procedures, DTC mails an Omnibus Proxy to Issuer as soon as possible after the record date. The Omnibus Proxy assigns Cede & Co.'s consenting or voting rights to those Direct Participants to whose accounts the Securities are credited on the record date (identified in a listing attached to the Omnibus Proxy).

8. Redemption proceeds, distributions, and dividend payments on the Securities will be made to Cede & Co., or such other nominee as may be requested by an authorized representative of DTC. DTC's practice is to credit Direct Participants' accounts, upon DTC's receipt of funds and corresponding detail information from Issuer or Agent on payable date in accordance with their respective holdings shown on DTC's records. Payments by Participants to Beneficial Owners will be governed by standing instructions and customary practices, as is the case with securities held for the accounts of customers in bearer form or registered in "street name," and will be the responsibility of such Participant and not of DTC, Agent, or Issuer, subject to any statutory or regulatory requirements as may be in effect from time to time. Payment of redemption proceeds, distributions, and dividends to Cede & Co. (or such other nominee as may be requested by an authorized representative of DTC) is the responsibility of Issuer or Agent, disbursement of such payments to Direct Participants shall be the responsibility of DTC, and disbursement of such payments to the Beneficial Owners shall be the responsibility of Direct and Indirect Participants.

-11-

[9. A Beneficial owner shall give notice to elect to have the Securities purchased or tendered, through its Participant, to [Tender/Remarketing] Agent, and shall effect delivery of such Securities by causing the Direct Participant to transfer the Participant's interest in the Securities, on DTC's records, to
[Tender/Remarketing] Agent. The requirement for physical delivery of Securities in connection with an optional tender or a mandatory purchase will be deemed satisfied when the ownership rights in the Securities are transferred by Direct Participants on DTC's records and followed by a book-entry credit of tendered Securities to [Tender/Remarketing] Agent's DTC account.]

10. DTC may discontinue providing its services as securities depository with respect to the Securities at any time by giving reasonable notice to Issuer or Agent. Under such circumstances, in the event that a successor securities depository is not obtained, Security certificates are required to be printed and delivered.

11. Issuer may decide to discontinue use of the system of book-entry transfers through DTC (or a successor securities depository). In that event, Security certificates will be printed and delivered.

12. The information in this section concerning DTC and DTC's book-entry system has been obtained from sources that Issuer believes to be reliable, but Issuer takes no responsibility for the accuracy thereof.

-12-

EXHIBIT l.1

VEDDER PRICE

VEDDER, PRICE, KAUFMAN & KAMMOHOLZ, P.C.
222 NORTH LASALLE STREET
CHICAGO, ILLINOIS 60601
312-609-7500
FACSIMILE: 312-609-5005

OFFICES IN CHICAGO, NEW YORK CITY AND
LIVINGSTON, NEW JERSEY

July 22, 2003

Calamos Convertible and High Income Fund 1111 East Warrenville Road
Naperville, IL 60563-1493

Re: Calamos Convertible and High Income Fund

Ladies and Gentlemen:

We are acting as special counsel to Calamos Convertible and High Income Fund, a Delaware statutory trust (the "Fund"), in connection with the Fund's filing of a registration statement on Form N-2 under the Securities Act of 1933 (File No. 333-105808) and the Investment Company Act of 1940 (File No. 811-21319) (the "Registration Statement") with the Securities and Exchange Commission (the "SEC") covering the registration and proposed issuance of 17,200 preferred shares of beneficial interest, designated Auction Rate Cumulative Preferred Shares ("Preferred Shares") of which, 3,000 shares are further designated Series M, 3,000 shares are further designated Series T, 3,000 shares are further designated Series W, 3,000 shares are further designated Series TH, 3,000 shares are further designated Series F and 2,200 shares are further designated Series A of the Calamos Convertible and High Income Fund (collectively, the "Series").

In rendering this opinion, we have examined:

(a) The form of Underwriting Agreement (the "Underwriting Agreement"), substantially in the form filed as an exhibit to the Registration Statement, proposed to be entered into among the Fund, Calamos Asset Management, Inc. and Citigroup Global Markets Inc. as representative of the several underwriters named therein;

(b) the Registration Statement;

(c) the Certificate of Trust and the Agreement and Declaration of Trust of the Fund;

(d) the By-laws of the Fund;

(e) the Statement of Preferences of Auction Rate Cumulative Preferred Shares;


VEDDER PRICE

Calamos Convertible and High Income Fund July 22, 2003

Page 2

(f) resolutions of the Board of Trustees in connection with the proposed issuance of the Preferred Shares;

(g) a Certificate of Good Standing as of a recent date from the Secretary of State of the State of Delaware; and

(h) such other documents as we, in our professional judgment, have deemed necessary or appropriate as a basis for the opinions set forth below
(items b-f above are referred to herein as the "Governing Documents".)

In examining the documents referred to above, we have assumed the genuiness of all signatures, the legal capacity of all natural persons, the authenticity of documents purporting to be originals and the conformity to originals of all documents submitted to us as copies. As to questions of act material to our opinion, we have relied (without investigation or independent confirmation) upon the representations contained on certificates and other communications from public officials and officers of the Fund. We have assumed that the Registration Statement and the Purchase Agreement will be duly completed, executed and delivered. With respect to the opinions expressed below, we not that, pursuant to Section 2 of Article VIII of the Agreement and Declaration of Trust, the Trustees have the power to cause each shareholder, or each shareholder of a particular series, to pay directly, in advance or arrears, for charges of the Fund's custodian or transfer, shareholder servicing or similar agent, an amount fixed from time to time by the Trustees, by setting off such charges due from such shareholder from declared but unpaid dividends owed such shareholder and/or by reducing the number of shares in the account of such shareholder by that number of full and/or fractional shares which represents the outstanding amount of such charges due from such shareholder.

We express no opinion as to the laws of any jurisdiction other than Title 12, Chapter 38 (Treatment of Delaware Statutory Trusts) of the Code of the State of Delaware and the laws of the State of Illinois (except that we express no opinion as to any choice of law provisions thereof) and the Federal laws of the United States of America. Insofar as this opinion pertains to matters governed by the laws of the State of Delaware, we are relying, with your consent, solely upon the opinion of Morris, Nichols, Arsht & Tunnell, special Delaware counsel to the Fund, dated July 22, 2003, which opinion is satisfactory in substance and form to us.

Based on the foregoing, and subject to the qualifications, exceptions and limitations set forth herein, we are of the opinion that:

(1) The Fund is a duly formed and validly existing statutory trust in good standing under the laws of the State of Delaware; and


VEDDER PRICE

Calamos Convertible and High Income Fund July 22, 2003

Page 3

(2) The Preferred Shares, when issued to shareholders in accordance with the terms, conditions, requirements and procedures set forth in the Governing Documents and delivered by the Fund pursuant to the Underwriting Agreement against payment of the consideration set forth in the Underwriting Agreement, will constitute legally issued, fully paid and non-assessable Preferred Shares of beneficial interest in the Series.

We hereby consent to the filing of this opinion as Exhibit 1.1 to the Registration Statement and to the reference to us under the caption "Legal Opinions" in the prospectus contained in the Registration Statement. In giving our consent, we do not thereby admit that we are in the category of persons whose consent is required under Section 7 of the Securities Act of 1933 or the rules and regulations of the SEC thereunder. The opinions expressed herein are matters of professional judgment and are not a guarantee of result.

Very truly yours,

/s/ Vedder, Price, Kaufman & Kammholz, P.C.


EXHIBIT l.2

[Letterhead of Morris, Nichols, Arsht & Tunnell]

July 22, 2003

Calamos Convertible and High Income Fund 1111 East Warrenville Road
Naperville, Illinois 60563-1493

Vedder, Price, Kaufman & Kammholz, P.C.
222 North LaSalle Street
Chicago, Illinois 60601

Re: Calamos Convertible and High Income Fund

Ladies and Gentlemen:

We have acted as special Delaware counsel to Calamos Convertible and High Income Fund, a Delaware statutory trust (the "Trust"), in connection with certain matters relating to the formation of the Trust and the issuance of shares of beneficial interest in the Series M Preferred Shares ("Series M"), Series TU Preferred Shares ("Series TU"), Series W Preferred Shares ("Series W"), Series TH Preferred Shares ("Series TH"), Series F Preferred Shares ("Series F"), and Series A Preferred Shares ("Series A" and collectively with Series M, Series TU, Series W, Series TH and Series F, the "Series") of the Trust. Such preferred shares are referred to herein as the "Shares". Capitalized terms used herein and not otherwise herein defined are used as defined in the Agreement and Declaration of Trust of the Trust dated as of March 12, 2003 (the "Governing Instrument").

In rendering this opinion, we have examined and relied on copies of the following documents, each in the form provided to us: the Certificate of Trust of the Trust as filed in the Office of the Secretary of State of the State of Delaware (the "State Office") on March 12, 2003 (the "Certificate of Trust"); the Governing Instrument; the Statement of Preferences of Auction Rate Cumulative Preferred Shares in the form presented to the Board of Trustees of the Trust (the "Board") at its meeting on June 23, 2003 (the "Preliminary Statement"); the Action of Sole Trustee of the Trust by Written Consent dated March 12, 2003 (the "Consent"); resolutions of the Board prepared for adoption at a meeting held on March 19, 2003 (the "March Resolutions"); resolutions of


Calamos Convertible and High Income Fund Vedder, Price, Kaufman & Kammholz, P.C.
July 22, 2003

Page 2

the Board prepared for adoption at a meeting held on June 23, 2003 (the "June Resolutions" and collectively with the March Resolutions, the "Resolutions"); the By-laws of the Trust (the "By-laws"); the Trust's Pre-Effective Amendment No. 1 to the Registration Statement under the Securities Act of 1933 and Amendment No. 4 under the Investment Company Act of 1940 on Form N-2 as filed with the Securities and Exchange Commission on or about the date hereof (the "Registration Statement" and, together with the Governing Instrument, the By-laws, the Final Statement (as defined below), the Resolutions and the Executive Committee Action (as defined below), the "Governing Documents"); and a certification of good standing of the Trust obtained as of a recent date from the State Office. In such examinations, we have assumed the genuineness of all signatures, the conformity to original documents of all documents submitted to us as copies or drafts of documents to be executed, and the legal capacity of natural persons to complete the execution of documents. We have further assumed for the purpose of this opinion: (i) the due authorization, adoption, execution and delivery by, or on behalf of, each of the parties thereto of the above-referenced instruments, certificates and other documents (including the due adoption by the Trustees of the Resolutions and the Consent), and of all documents contemplated by either the Governing Documents or any applicable resolutions of the Trustees to be executed by investors desiring to become Shareholders; (ii) the payment of consideration for Shares, and the application of such consideration, as provided in the Governing Documents, and compliance with the other terms, conditions and restrictions set forth in the Governing Documents and all applicable resolutions of the Trustees of the Trust in connection with the issuance of Shares (including, without limitation, the taking of all appropriate action by the Trustees to designate Series and Classes of Shares and the rights and preferences attributable thereto as contemplated by the Governing Instrument); (iii) that appropriate notation of the names and addresses of, the number of Shares held by, and the consideration paid by, Shareholders will be maintained in the appropriate registers and other books and records of the Trust in connection with the issuance, redemption or transfer of Shares; (iv) that the number of Shares to be issued is 19,861 or such lesser amount as is provided in the Registration Statement (such number of Shares, the "Preferred Shares"); (v) that no event has occurred subsequent to the filing of the Certificate of Trust that would cause a termination or reorganization of the Trust or a Series or Class of the Trust under Sections 4 or 6 of Article IX of the Governing Instrument; (vi) that the Trust became, prior to or within 180 days following the first issuance of beneficial interests therein, a registered investment company under the Investment Company Act of 1940; (vii) that the activities of the Trust have been and will be conducted in accordance with the terms of the Governing Instrument and the Delaware Statutory Trust Act, 12 Del. C. Sections 3801 et seq. (the "Delaware Act"); (viii) that, in accordance with and pursuant to the June Resolutions, the Executive Committee of the Board will approve the issuance of the Preferred Shares in the Series, at such amount per Preferred Share with a liquidation preference of $25,000 per Preferred Share and with such title, rate period and designation as are consistent with the relevant provisions of the Registration Statement relating to the Preferred Shares and will approve a completed final form of the Preliminary Statement that specifies the preferences, voting powers, restrictions, limitations as to dividends, qualifications and terms and conditions of redemption with respect to the Preferred Shares, substantially in the form set forth in the


Calamos Convertible and High Income Fund Vedder, Price, Kaufman & Kammholz, P.C.
July 22, 2003

Page 3

Preliminary Statement, and that incorporates the relevant provisions of the Registration Statement relating to the Preferred Shares (including without limitation designation of the Series as Series M Preferred Shares, Series TU Preferred Shares, Series W Preferred Shares, Series TH Preferred Shares, Series F Preferred Shares and Series A Preferred Shares) and complies in all respects with the provisions of the Delaware Act (the "Final Statement"), in each case prior to the first issuance of Preferred Shares (the "Executive Committee Action"); and (ix) that each of the documents examined by us is in full force and effect and has not been modified, supplemented or otherwise amended, except as herein referenced. No opinion is expressed herein with respect to the requirements of, or compliance with, federal or state securities or blue sky laws. Further, we express no opinion with respect to, and we assume no responsibility for, any offering documentation relating to the Trust or the Preferred Shares. As to any facts material to our opinion, other than those assumed, we have relied without independent investigation on the above-referenced documents and on the accuracy, as of the date hereof, of the matters therein contained.

Based on and subject to the foregoing, and limited in all respects to matters of Delaware law, it is our opinion that:

1. The Trust is a duly formed and validly existing statutory trust in good standing under the laws of the State of Delaware.

2. The Preferred Shares, when issued to Shareholders in accordance with the terms, conditions, requirements and procedures set forth in the Governing Documents, will constitute legally issued, fully paid and non-assessable Preferred Shares of beneficial interest in the Series.

With respect to the opinion expressed in paragraph 2 above, we note that, pursuant to Section 2 of Article VIII of the Governing Instrument, the Trustees have the power to cause each Shareholder, or each Shareholder of any particular Series, to pay directly, in advance or arrears, for charges of the Trust's custodian or transfer, shareholder servicing or similar agent, an amount fixed from time to time by the Trustees, by setting off such charges due from such Shareholder from declared but unpaid dividends owed such Shareholder and/or by reducing the number of Shares in the account of such Shareholder by that number of full and/or fractional Shares which represents the outstanding amount of such charges due from such Shareholder.

We hereby consent to the filing of a copy of this opinion with the Securities and Exchange Commission as part of the Registration Statement. In giving this consent, we do not thereby admit that we come within the category of persons whose consent is required under Section 7 of the Securities Act of 1933, as amended, or the rules and regulations of the Securities and Exchange Commission thereunder. Except as provided in this paragraph, the opinions set forth above are expressed solely for the benefit of the addressees hereof and may not be relied upon by any other person or entity for any purpose without our prior written consent. This opinion speaks only as of the date hereof and is based on our understandings and assumptions as to present facts


Calamos Convertible and High Income Fund Vedder, Price, Kaufman & Kammholz, P.C.
July 22, 2003

Page 4

and our review of the above-referenced documents and certificates and the application of Delaware law as the same exists on the date hereof, and we undertake no obligation to update or supplement this opinion after the date hereof for the benefit of any person or entity with respect to any facts or circumstances that may hereafter come to our attention or any changes in facts or law that may hereafter occur or take effect.

Sincerely,

MORRIS, NICHOLS, ARSHT & TUNNELL


Exhibit n

INDEPENDENT AUDITORS' CONSENT

To the Board of Directors and Shareholders of Calamos Convertible and High Income Fund:

We consent to the use in this Post-Effective Amendment No. 1 to Registration Statement No. 333-105808 of Calamos Convertible and High Income Fund on Form N-2 of our report dated May 27, 2003, appearing in the Statement of Additional Information, which is part of such Registration Statement. We also consent to the reference to us under the caption "Experts" in the Statement of Additional Information.

/s/ Deloitte & Touche LLP
----------------------------
Deloitte & Touche LLP


Chicago, Illinois
July 18, 2003