As filed with the Securities and Exchange Commission on February 24, 2000

Registration No. 333-95561


UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, DC 20549


Amendment No.1
to
FORM S-4

REGISTRATION STATEMENT
UNDER THE SECURITIES ACT OF 1933

CHICAGO MERCANTILE EXCHANGE INC.
(Exact name of registrant as specified in its charter)


            Delaware                                         6231                               36-4340266
(State or other jurisdiction of                   (Primary Standard Industrial               (I.R.S. Employer
incorporation or organization)                    Classification Code Number)             Identification Number)

30 South Wacker Drive
Chicago, Illinois 60606
(312) 930-1000
(Address, including zip code, and telephone number, including area code,
of registrant's principal executive offices)

Craig S. Donohue, Esq.
Senior Vice President and General Counsel
30 South Wacker Drive
Chicago, Illinois 60606
(312) 930-1000
(Name, address, including zip code, and telephone number, including area code,
of agent for service)

copies to:
Richard W. Astle, Esq.
Sidley & Austin
Bank One Plaza -- 10 South Dearborn Street
Chicago, Illinois 60603
(312) 853-7270

Approximate date of commencement of proposed sale to the public: As promptly as practicable after this Registration Statement becomes effective and the satisfaction or waiver of certain other conditions under the Agreement and Plan of Merger described herein.

If the securities being registered on this Form are being offered in connection with the formation of a holding company and there is compliance with General Instruction G, check the following box. [_]

If this Form is filed to register additional securities for an offering pursuant to Rule 462(b) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]

If this Form is a post-effective amendment filed pursuant to Rule 462(d) under the Securities Act, check the following box and list the Securities Act registration statement number of the earlier effective registration statement for the same offering. [_]

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 of 1933 or until the Registration Statement shall become effective on such date as the Commission, acting pursuant to said Section 8(a), may determine.



PART II

INFORMATION NOT REQUIRED IN PROSPECTUS

Item 20. Indemnification of Directors and Officers

Section 145 of the Delaware General Corporation Law provides that the Registrant may, and in some circumstances must, indemnify the directors and officers of the Registrant against liabilities and expenses incurred by such person by reason of the fact that such person was serving in such capacity, subject to certain limitations and conditions set forth in the statute. The Registrant's Certificate of Incorporation and By-Laws provide that the Registrant will indemnify its directors and officers, and may indemnify any person serving as director or officer of another business entity at the Registrant's request, to the extent permitted by the statute. In addition, the Registrant's Certificate of Incorporation provides, as permitted by the the Delaware General Corporation Law, that directors shall not be personally liable for monetary damages for breach of fiduciary duty as a director, except (i) for breaches of their duty of loyalty to the Registrant or its stockholders, (ii) for acts or omissions not in good faith or which involve intentional misconduct or a knowing violation of law, (iii) under Section 174 of the Delaware General Corporation Law, and (iv) for transactions from which a director derived an improper personal benefit.

Item 21. Exhibits and Financial Statement Schedules

(a) Exhibits

The following is a list of Exhibits included as part of this Registration Statement. The Registrant agrees to furnish supplementally a copy of any omitted schedule to the Securities and Exchange Commission upon request.

Exhibit
Number    Description of Exhibit
------    ----------------------
2.1*      Form of Agreement and Plan of Merger dated as of _______, 2000 between Chicago Mercantile Exchange and CME
          Transitory Co. (included as Exhibit B to the Proxy Statement/Prospectus).
2.2**     Form of Agreement and Plan of Merger dated as of _______, 2000 between CME Transitory Co. and the Registrant
3.1*      Certificate of incorporation of the Registrant
3.2*      Amended and Restated Certificate of Incorporation (included as Annex A to the Proxy Statement/Prospectus)
3.3**     By-laws of the Registrant
5.1**     Opinion of Sidley & Austin regarding legality of securities being registered
8.1**     Opinion of Sidley & Austin regarding tax matters
10.1**    Chicago Mercantile Exchange Omnibus Stock Plan, effective February 7, 2000.
10.2      Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan, including First Amendment
          thereto dated December 14, 1994, Second Amendment thereto dated December 8, 1998 and Administrative Guidelines
          thereto.
10.3      Chicago Mercantile Exchange Directors' Deferred Compensation Plan, including First Amendment thereto dated
          December 8, 1998.
10.4      Chicago Mercantile Exchange Supplemental Executive Retirement Plan, including First Amendment thereto dated
          December 31, 1996, Second Amendment thereto dated January 14, 1998 and Third Amendment thereto dated December
          __, 1998.
10.5      Chicago Mercantile Exchange Supplemental Executive Retirement Trust, including First Amendment thereto dated
          September 7, 1993.
10.6      Agreement dated March 21, 1997 between Chicago Mercantile Exchange and T. Eric Kilcollin.
10.7      Separation Agreement and General Release, executed December 31, 1998 between T. Eric Kilcollin and Chicago
          Mercantile Exchange.
10.8**    Agreement dated February 7, 2000 between Chicago Mercantile Exchange and James J. McNulty.
10.9      Employment Agreement dated October 27, 1998 between Chicago Mercantile Exchange and Frederick Arditti, and
          First Amendment thereto dated October 27, 1998 and Second Amendment thereto dated October 27, 1998.
10.10     Employment Agreement dated December 10, 1999 between Chicago Mercantile Exchange and Gerald D. Beyer.
10.11     Employment Agreement, executed September 8, 1999 between Chicago Mercantile Exchange and Phupinder Gill.
10.12     Employment Agreement dated July 17, 1998 between Chicago Mercantile Exchange and William Jenks
10.13**   License Agreement, effective as of September 24, 1997 between Standard & Poor's, a Division of The McGraw-Hill
          Companies, Inc., and Chicago Mercantile Exchange.
10.14     Lease dated as of November 11, 1983 between Chicago Mercantile Exchange Trust (successor to CME Real Estate
          Co. of Chicago, Illinois) and Chicago Mercantile Exchange, including amendment thereto dated as of December 6,
          1989.
10.15     Lease dated March 31, 1988 between EOP -- 10 & 30 South Wacker, L.L.C., as beneficiary of a land trust dated
          October 1, 1997 and known as American National Bank and Trust Company of Chicago Trust No. 123434 (as successor
          in interest to American National Bank and Trust Company of Chicago, not individually but solely as trustee
          under Trust Agreement dated June 2, 1981 and known as Trust No. 51234) and Chicago Mercantile Exchange relating
          to 10 South Wacker Drive, including First Amendment thereto dated as of November 1, 1999.
10.16     Lease dated May 11, 1981 between EOP -- 10 & 30 South Wacker, L.L.C., as beneficiary of a land trust dated
          October 1, 1997 and known as American National Bank and Trust Company of Chicago Trust No. 123434-06 (as
          successor in interest to American National Bank and Trust Company of Chicago, not individually but solely as
          trustee under Trust Agreement dated March 20, 1980 and known as Trust No. 48268) and Chicago Mercantile
          Exchange relating to 30 South Wacker Drive, including First Amendment thereto dated as of February 1, 1982,
          Second Amendment thereto dated as of April 26, 1982, Third Amendment thereto dated as of June 29, 1982, Fourth
          Amendment thereto dated as of July 28, 1982, Fifth Amendment thereto dated as of October 7, 1982, Sixth
          Amendment thereto dated as of July 5, 1983, Seventh Amendment thereto dated as of September 19, 1983, Eighth
          Amendment thereto dated as of October 17, 1983, Ninth Amendment thereto dated as of December 3, 1984, Tenth
          Amendment thereto dated as of March 16, 1987, Eleventh Amendment thereto dated as of January 1, 1999, Twelfth
          Amendment thereto dated as of June 30, 1999.
23.1**    Consent of Sidley & Austin (included in Exhibit 5.1)
23.2*     Consent of Arthur Andersen LLP
24.1*     Form of Power of Attorney executed by Directors of Registrant
27.1*     Financial Data Schedule
99.1*     Form of proxy


* Previously filed. ** To be filed by amendment.

(b) Financial Statement Schedules

None.

Item 22. Undertakings.

The Registrant hereby undertakes:

(1) To file, during any period in which offers or sales are being made, a post-effective amendment to this registration statement:

(i) To include any prospectus required by Section 10(a)(3) of the Securities Act of 1933.

(ii) To reflect in the prospectus any facts or events arising after the effective date of the registration statement (or the most recent post-effective amendment thereof) which, individually or in the aggregate, represent a fundamental change in the information set forth in the registration statement. Notwithstanding the foregoing, any increase or decrease in volume of securities offered (if the total dollar value of securities offered would not exceed that which was registered) and any deviation from the low or high end of the estimated maximum offering range may be reflected in the form of prospectus filed with the Commission pursuant to Rule 424(b) if, in the aggregate, the changes in volume and price represent no more than 20 percent change in the maximum aggregate offering price set forth in the "Calculation of Registration Fee" table in the effective registration statement.

(iii) To include any material information with respect to the plan of distribution not previously disclosed in the registration statement or any material change to such information in the registration statement.

(2) That, for the purpose of determining any liability under the Securities Act of 1933, each such post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(3) To remove from registration by means of a post-effective amendment any of the securities being registered which remain unsold at the termination of the offering.

(4) That prior to any public reoffering of the securities registered hereunder through use of a prospectus which is a part of this registration statement, by any person or party who is deemed to be an underwriter within the meaning of Rule 145(c), the issuer undertakes that such reoffering prospectus will contain the information called for by the applicable registration form with respect to reofferings by persons who may be deemed underwriters, in addition to the information called for by the other items of the applicable form.

(5) That every prospectus: (i) that is filed pursuant to paragraph
(4) immediately preceding, or (ii) that purports to meet the requirements of Section 10(a)(3) of the Act and is used in connection with an offering of securities subject to Rule 415, will be filed as a part of an amendment to the registration statement and will not be used until such amendment is effective, and that, for purposes of determining any liability under the Securities Act of 1933, each such

2

post-effective amendment shall be deemed to be a new registration statement relating to the securities offered therein, and the offering of such securities at that time shall be deemed to be the initial bona fide offering thereof.

(6) To respond to requests for information that is incorporated by reference into the prospectus pursuant to Item 4, 10(b), 11, or 13 of this form, within one business day of receipt of such request, and to send the incorporated documents by first class mail or other equally prompt means. This includes information contained in documents filed subsequent to the effective date of the registration statement through the date of responding to the request.

(7) To supply by means of a post-effective amendment all information concerning a transaction, and the company being acquired involved therein, that was not the subject of and included in the registration statement when it became effective.

Insofar as indemnification for liabilities arising under the Securities Act of 1933 may be permitted to directors, 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 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 registrant of expenses incurred or paid by a director, officer or controlling person of the registrant 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 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 Act and will be governed by the final adjudication of such issue.

3

SIGNATURES

Pursuant to the requirements of the Securities Act, the registrant has duly caused this Amendment No. 1 to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of Chicago, State of Illinois, on February 24, 2000.

CHICAGO MERCANTILE EXCHANGE INC.

By: /s/ M. Scott Gordon
   -------------------------------------
    M. Scott Gordon
    Chairman of the Board

Pursuant to the requirements of the Securities Act of 1933, this registration statement has been signed by the following persons in the capacities indicated on this 24th day of February, 2000.

     Name                     Title
     ----                     -----


M. Scott Gordon               Chairman of the Board and Director
---------------------------
M. Scott Gordon               (Chief Executive Officer)


David G. Gomach               Senior Vice President and Chief Financial Officer
---------------------------
David G. Gomach               (Principal Financial Officer)


Raymond C. Repede             Vice President and Controller
---------------------------
Raymond C. Repede             (Principal Accounting Officer)

        *                     Director
---------------------------
H. Jack Bouroudjian

        *                     Director
---------------------------
Timothy R. Brennan

        *                     Director
---------------------------
Leslie Henner Burns

        *                     Director
---------------------------
Jeffrey R. Carter

                              Director
---------------------------
E. Gerald Corrigan

        *                     Director
---------------------------
Terrence A. Duffy

        *                     Director
---------------------------
Rahm Emanuel
                                       4

        *                     Director
---------------------------
Martin J. Gepsman

        *                     Director
---------------------------
Yra G. Harris

        *                     Director
---------------------------
Robert L. Haworth

        *                     Director
---------------------------
Bruce F. Johnson

                              Director
---------------------------
Gary M. Katler

        *                     Director
---------------------------
Paul Kimball

        *                     Director
---------------------------
Thomas A. Kloet

        *                     Director
---------------------------
John W. Lacey

        *                     Director
---------------------------
Leo Melamed

        *                     Director
---------------------------
Merton H. Miller

        *                     Director
---------------------------
William P. Miller II

        *                     Director
---------------------------
Laurence E. Mollner

        *                     Director
---------------------------
Patrick J. Mulchrone

        *                     Director
---------------------------
John D. Newhouse

        *                     Director
---------------------------
James E. Oliff

        *                     Director
---------------------------
Mark G. Papadopoulos

        *                     Director
---------------------------
Ward Parkinson

                                       5

        *                     Director
---------------------------
Robert J. Prosi

                              Director
---------------------------
David M. Pryde

        *                     Director
---------------------------
Irwin Rosen

        *                     Director
---------------------------
William G. Salatich, Jr.

        *                     Director
---------------------------
John F. Sandner

        *                     Director
---------------------------
Verne O. Sedlacek

        *                     Director
---------------------------
Leon C. Shender

        *                     Director
---------------------------
William R. Shepard

        *                     Director
---------------------------
Howard J. Siegel

        *                     Director
---------------------------
David I. Silverman

        *                     Director
---------------------------
Jeffrey L. Silverman

        *                     Director
---------------------------
Paul Simon

* By: /s/ Craig S. Donohue
     ----------------------
     Craig S. Donohue
     Attorney-in-Fact

6

Exhibit 10.2 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

CHICAGO MERCANTILE EXCHANGE SENIOR MANAGEMENT SUPPLEMENTAL DEFERRED SAVINGS PLAN

                               TABLE OF CONTENTS
                               -----------------

SECTION 1......................................................................1
     General...................................................................1
          History, Purpose and Effective Date..................................1
          Administration.......................................................1
          Plan Year............................................................1
          Source of Benefit Payments...........................................1
          Expenses.............................................................2
          Effect on Other Benefit Plans........................................2
          Applicable Laws......................................................2
          Gender and Number....................................................2
          Notices..............................................................2
          Evidence.............................................................2
          Action by Exchange...................................................2

SECTION 2......................................................................3
     Participation.............................................................3
          Participant..........................................................3
          Plan Not Contract of Employment......................................3

SECTION 3......................................................................3
     Deferred Compensation; Plan Accounting....................................3
          Deferred Compensation Accounts.......................................3
          Deferral Election....................................................4
          Matching Credits.....................................................4
          Cash Balance Plan and TESP Make-Whole Credits........................4
          Adjustment of Accounts...............................................5

SECTION 4......................................................................5
     Payment of Plan Benefits..................................................5
          Vesting..............................................................5
          Termination of Employment............................................5
          Hardship Distributions...............................................6
          Beneficiary Designation..............................................6
          Distributions to Disabled Persons....................................6
          Benefits May Not be Assigned.........................................7
          Withholding for Tax Liability........................................7

SECTION 5......................................................................7
     Amendment and Termination.................................................7
          Administrative Amendments............................................7
          Amendments and Termination...........................................7

i

CHICAGO MERCANTILE EXCHANGE SENIOR MANAGEMENT SUPPLEMENTAL DEFERRED SAVINGS PLAN

SECTION 1

General

1.1. History, Purpose and Effective Date. The Chicago Mercantile Exchange, an Illinois not-for-profit corporation (the "Exchange"), has maintained the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan (the "Plan") to provide a select group of its key management employees with the opportunity to defer receipt of compensation and receive additional retirement income from the Exchange. The following provisions constitute an amendment, restatement, and continuation of the Plan, effective as of January 1, 1993 (the "Effective Date"). The Plan is intended to constitute a plan maintained primarily for the purpose of providing deferred compensation for a select group of management or highly compensated employees within the meaning of sections 201(2), 301(a)(3), and 401(a)(1) of the Employee Retirement Income Security Act of 1974, as amended ("ERISA").

1.2. Administration. The Exchange is the Plan Administrator of the Plan. The Plan Administrator may delegate all or any part of its responsibilities and powers to any person or persons selected by it. Any such delegation may be revoked at any time. Until the Plan Administrator takes action to the contrary, the President of the Exchange shall be delegated the power and responsibility to take all actions assigned to or permitted to be taken by the Plan Administrator under Sections 3 and 4 hereof. The Secretary of the Exchange (or, on behalf of the Secretary of the Exchange, any Corporate Secretary or Assistant Secretary) shall certify to any interested person the names of the employees of the Exchange who are, from time to time, authorized to act an behalf of the Plan Administrator and who are responsible for the day-to-day operation and administration of the Plan. Any interpretation of the Plan by the Plan Administrator and any decision made by the Plan Administrator or its delegate on any other matter within its discretion is final and binding on all persons.

1.3. Plan Year. The term "Plan Year" means the calendar year.

1.4. Source of Benefit Payments. Subject to the terms and conditions of the Plan, any amount payable to or on account of a Participant under this Plan shall be paid from the general assets of the Exchange or from one or more trusts, the assets of which are subject to the claims of the Exchange's general creditors. The amounts payable hereunder shall be reflected on the


accounting records of the Exchange but shall not be construed to create, or require the creation of, a trust, custodial or escrow account. None of the individuals entitled to benefits under the Plan shall have any preferred claim on, or any beneficial ownership interest in, any assets of the Exchange or to any investment reserves, accounts, trusts or funds that the Exchange may purchase, establish or accumulate to aid in providing the benefits under the Plan, and any rights of such individuals under the Plan shall constitute unsecured contractual rights only. Nothing contained in the Plan shall constitute a guarantee by the Exchange that the assets of the Exchange shall be sufficient to pay any benefits to any person. Nothing contained in the Plan and no action taken pursuant to its provisions shall create a trust or fiduciary relationship at any kind between the Exchange and an employee or any other person.

1.5. Expenses. The expenses of administering the Plan shall be borne by the Exchange.

1.6 Effect on Other Benefit Plans. Any amounts credited or paid under this Plan shall not be considered to be compensation for the purposes of any qualified plan (within the meaning of section 401(a) of the Internal Revenue Code of 1986, as amended (the "Code")), as maintained by the Exchange. The treatment of such amounts under other employee benefit plans shall be pursuant to the provisions of such plans.

1.7. Applicable Laws. The Plan shall be construed and administered in accordance with the internal laws of the State of Illinois.

1.8. Gender and Number. Where the context admits, words in any gender shall include any other gender, words in the singular shall include the plural and the plural shall include the singular.

1.9. Notices. Any notice or document required to be given to or filed with the Plan Administrator will be properly filed if delivered or mailed by registered mail, postage prepaid, to the Secretary of the Exchange, at its principal executive offices. The Plan Administrator may, by advance written notice to affected persons, revise such notice procedure from time to time. Any notice required under the Plan may be waived by the person entitled to notice.

1.10. Evidence. Evidence required of anyone under the Plan may be by certificate, affidavit, document or other information which the person acting on it considers pertinent and reliable, and signed, made or presented by the proper party or parties.

1.11. Action by Exchange. Any action required or permitted to be taken by the Exchange shall be by resolution of its Board

2

of Directors or its Executive Committee, or by a duly authorized officer of the Exchange.

SECTION 2

Participation

2.1. Participant. The key employees of the Exchange eligible to participate in the Plan and the conditions for such participation shall be established, from time to time, by the Exchange; provided, however, that Participants shall be limited to a select group of management or highly compensated employees within the meaning of sections 201(2), 301(a)(3), and 401(a)(1) of ERISA. If the Exchange determines that participation by one or more Participants shall cause the Plan to be subject to Part 2, 3 or 4 of Title I of ERISA, the entire interest of such Participant or Participants under the Plan shall be immediately paid to such Participant or Participants or shall otherwise be segregated from the Plan in the discretion of the Exchange, and such Participant or Participants shall cease to have any interest under the Plan.

2.2. Plan Not Contract of Employment . The Plan does not constitute a contract of employment, and participation in the Plan will not give any employee the right to be retained in the employ of the Exchange nor any right or claim to any benefit under the Plan, unless such right or claim has specifically accrued under the terms of the Plan.

SECTION 3

Deferred Compensation; Plan Accounting

3.1. Deferred Compensation Accounts. The Plan Administrator shall maintain, or cause to be maintained, an Account in the name of each Participant which shall reflect the sum of the following amounts:

(a) the amount of compensation deferred by the Participant in accordance with the provisions of subsection 3.2;

(b) the amount of Matching Credits to be credited to the Participant's Account in accordance with subsection 3.3;

(c) the amount of the Make-Whole Credits to be credited to the Participant's Account in accordance with subsection 3.4; and

3

(d) the assumed rate of earnings to be credited to the Participant's Account in accordance with Subsection 3.5.

The beginning balance of each Participant's Account on the Effective Date shall be the amount credited to him under the Plan as in effect immediately prior to the Effective Date.

3.2. Deferral Election. Subject to such terms, conditions, and limitations as the Plan Administrator may, from time to time, impose, a Participant who has elected the maximum salary reduction permitted under the Chicago Mercantile Exchange Tax Efficient Savings Plan (the "TESP") for any Plan Year may make an irrevocable election to defer receipt of compensation otherwise payable to him by the Exchange for that year, by filing a deferral election in writing with the Plan Administrator at such time and in such manner as the Plan Administrator shall provide, but in no case later than the day preceding the first day of such Plan Year. The maximum amount of compensation that may be deferred by a Participant for a Plan Year shall be equal to (a) minus (b) below:

(a) an amount equal to 20 percent of his compensation, as defined below;

(b) the actual amount of the Tax Efficient Contributions made on his behalf under the TESP for such year.

For purposes or the Plan, a Participant's "compensation" for any Plan Year shall mean his base salary plus any bonus otherwise payable in that Plan Year. To the extent provided by the Plan Administrator, a Participant may make separate deferral elections with respect to base salary and bonus amounts. The Account of each Participant shall be credited with the amount deferred by the Participant as of the date on which such compensation would otherwise have been paid to the Participant or such other date as the Plan Administrator may reasonably provide.

3.3. Matching Credits. Subject to such terms, conditions, and limitations as the Plan Administrator may, from time to time, impose, for each Plan Year, the Account of each Participant shall be credited with a "Matching Credit" at such time as the Plan Administrator shall determine. A Participant's Matching Credit for each Plan Year shall be equal to the total amount of compensation otherwise payable during that Plan Year which the Participant elected to defer in accordance with subsection 3.2 or, if less, the amount that, when added to the Participant's Matching Contributions for the year, does not exceed 3 percent of his compensation (excluding bonus) for such Plan Year.

3.4. Cash Balance Plan and TESP Make-Whole Credits. To the extent that the amount credited to a Participant's account under the TESP in connection with the trading volume provisions of TESP

4

or the Pension Plan for Employees of the Chicago Mercantile Exchange (the "Pension Plan"), either by reason of the limitation on compensation imposed by section 401(a)(17) of the Internal Revenue Code of 1986, as amended, or by reason of salary deferrals under this Plan, the Account of the Participant shall be credited with a "Make-Whole Credit" at such time as the Plan Administrator shall determine.

3.5. Adjustment of Accounts. The amounts credited to a Participant's Account in accordance with subsections 3.2 and 3.3 shall be adjusted from time to time in accordance with uniform procedures established by the Plan Administrator to reflect the value of an investment equal to the Participant's Account balance in one or more assumed investments that the Plan Administrator offers from time to time, and which the Participant, directs the Plan Administrator to use for purposes of adjusting his Account. Such amount shall be determined without regard to taxes that would be payable with respect to any such assumed investment. The Plan Administrator may eliminate any assumed investment alternative at any time; provided, however, that the Plan Administrator may not retroactively eliminate any assumed investment alternative. To the extent permitted by the Plan Administrator, the Participant may elect to have different portions of his Account balance for any period adjusted on the basis of different assumed investments. Notwithstanding the election by Participants of certain assumed investments and the adjustment of their Accounts based on such investment decisions, the Plan does not require, and no trust or other instrument maintained in connection with the Plan shall require, that any assets or amounts which are set aside in trust or otherwise for the purpose of paying Plan benefits shall actually be invested in the investment alternatives selected by Participants.

SECTION 4

Payment of Plan Benefits

4.1. Vesting. A Participant shall have at all times a fully vested and nonforfeitable interest in the amounts theretofore credited or required to be credited to his Account under Section 3.

4.2. Termination of Employment. Upon a Participant's death or termination of active employment, the Participant's entire Account balance, including the Matching Credit on amounts deferred prior to the Participant's death or termination date, shall be paid to or an account of the Participant as follows:

(a) in a single lump sum payment as soon as practicable after his date of death or termination or employment, or

5

(b) if elected by the Participant, in annual installments over a period of 5 or fewer years; provided, however, that any such election by a Participant who resigns or is dismissed prior to his retirement date (within the meaning of the Pension Plan) shall require the consent of the Exchange.

4.3. Hardship Distributions. The Plan Administrator may, pursuant to rules adopted by it and applied in a uniform manner, accelerate the date of distribution or a Participant's Account because of hardship at any time. "Hardship" shall mean an unforeseeable, severe financial condition resulting from (a) a sudden and unexpected illness or accident of the Participant or his dependent (as defined in section 152(a) of the Code; (b) loss of the Participants property due to casualty; or (c) other similar extraordinary and unforeseeable circumstances arising as a result of events beyond the control of the Participant, but which may not be relieved through other available resources of the Participant, as determined by the Plan Administrator in accordance with uniform rules adopted by it.

4.4. Beneficiary Designation. Each Participant from time to time, by signing a form furnished by the Plan Administrator, may designate any legal or natural person or persons (who may be designated contingently or successively) to whom his benefits under the Plan are to be paid if he dies before he receives all of his benefits. A beneficiary designation form will be effective only when the signed form is filed with the Plan Administrator while the Participant is alive and will cancel all beneficiary designation forms filed earlier. Except as otherwise specifically provided in this subsection 4.5, if a deceased Participant failed to designate a beneficiary as provided above, or if the designated beneficiary of a deceased Participant dies before him or before complete payment of the Participant's benefits, his benefits shall be said to the legal representative or representatives of the estate of the last to die of the Participant and his designated beneficiary.

4.5. Distributions to Disabled Persons. Notwithstanding the provisions of this Section 4, if, in the Plan Administrator's opinion, a Participant or beneficiary is under a legal disability or is in any way incapacitated so as to be unable to manage his financial affairs, the Plan Administrator may direct that payment be made to a relative or friend of such person for his benefit until claim is made by a conservator or other person legally charged with the care of his person or his estate, and such payment shall be in lieu or any such payment to such Participant or beneficiary. Thereafter, any benefits under the Plan to which such Participant or beneficiary is entitled shall be paid to such conservator or other person legally charged with the care of his person or his estate.

6

4.6. Benefits May Not be Assigned. Benefits payable under the Plan are expressly declared to be unassignable and nontransferable. Neither the Participant nor any other person shall have any voluntary or involuntary right to commute, sell, assign pledge, anticipate, mortgage or otherwise encumber, transfer, hypothecate or convey in advance of actual receipt, any benefits payable under the Plan. No part of the benefits payable shall be, prior to actual payment, subject to seizure or sequestration for payment of any debts, judgements, alimony or separate maintenance owed by the Participant or any other person, or be transferred by operation of law in the event of the Participant's or any other person's bankruptcy or insolvency.

4.7. Withholding for Tax Liability. The Exchange may withhold or cause to be withheld from any payment of benefits made pursuant to the Plan any taxes required to be withheld and such sum as the Exchange may reasonably estimate to be necessary to cover any taxes for which the Exchange may be liable and which may be assessed with regard to such payment.

SECTION 5

Amendment and Termination

5.1 Administrative Amendments. The President of the Exchange may make minor or administrative amendments to the Plan.

5.2 Amendments and Termination. The Exchange may amend the Plan at any time. The Exchange may terminate the Plan at any time provided that it has made adequate provisions for any amount payable by it under the terms of the Plan as in effect on the date it terminates the Plan. Upon termination of the Plan, the Exchange may, in its discretion applied in a uniform manner to all Participants, cause a lump sum payment of all benefits for all Participants at substantially the same time.

Dated this 17 day of March, 1994.

CHICAGO MERCANTILE EXCHANGE

By /s/ Gerald Beyer
  ---------------------------------

   Its EVP
       ----------------------------

7

FIRST AMENDMENT
TO
CHICAGO MERCANTILE EXCHANGE
SENIOR MANAGEMENT SUPPLEMENTAL
DEFERRED SAVINGS PLAN

Pursuant to the authority reserved to the Chicago Mercantile Exchange (the "CME") by subsection 5.2 of the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan (the "Plan"), the undersigned, as a duly authorized officer of the CME, hereby amends the Plan, effective as of January 1, 1995, by substituting the following for subsections 3.2 and 3.3 of the Plan:

"3.2. Deferral Election. Subject to such terms, conditions, and limitations as the Plan Administrator may, from time to time, impose, a Participant may make an irrevocable election to defer receipt of compensation otherwise payable to him by the Exchange for any Plan Year, by filing a deferral election in writing with the Plan Administrator at such time and in such manner as the Plan Administrator shall provide, but in no case later than the day preceding the first day of such Plan Year. The maximum amount of compensation that may be deferred by a Participant for a Plan Year shall be equal to:

(a) an amount equal to 20 percent of his compensation, as defined below, minus

(b) the limit for that year established by section 402(g) of the Internal Revenue Code of 1986, as amended (the 'Code'), with respect to elective deferrals made on a pre-tax basis to tax-qualified cash or deferred arrangements under section 401(k) of the Code.

For purposes of the Plan, a Participant's 'compensation' for any Plan Year shall mean his base salary plus any bonus otherwise payable in that Plan Year. To the extent provided by the Plan Administrator, a Participant may make separate deferral elections with respect to base salary and bonus amounts. The Account of each Participant shall be credited with the amount deferred by the Participant as of the date on which such compensation would otherwise have been paid to the Participant or such other date as the Plan Administrator may reasonably provide.

3.3. Matching Credits. Subject to such terms, conditions, and limitations as the Plan Administrator may, from time to time, impose, for each Plan Year, the Account of each Participant shall be credited with a 'Matching Credit, at such time as the Plan Administrator shall determine. A Participant's Matching Credit for each Plan Year shall be equal to the total amount of


compensation otherwise payable during that Plan Year which the Participant elected to defer in accordance with subsection 3.2 or, if less, the amount that, when added to the maximum amount of 'Matching Contributions' that would be credited to the Participant for that year under the Exchange's Tax Efficient Savings Plan ('TESP') if the Participant made 'Tax Efficient Contributions' to TESP for that year equal to the amount set forth in 3.2(b) above, does not exceed 3 percent of his compensation (excluding bonus) for such Plan Year."

IN WITNESS WHEREOF, the undersigned has executed this amendment this 14th day of December, 1994.

/s/  William J. Brodsky
---------------------------
William J. Brodsky, Trustee


SECOND AMENDMENT
TO
CHICAGO MERCANTILE EXCHANGE
SENIOR MANAGEMENT SUPPLEMENTAL DEFERRED SAVINGS PLAN

By virtue and in exercise of the amending authority reserved to the Chicago Mercantile Exchange (the "Exchange") by the provisions of subsection 5.2 of the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan (the "Plan"), and pursuant to the authority delegated to the undersigned officer of the Exchange by resolutions of its Board of Directors adopted on November 4, 1998 and November 16, 1998, the Plan is amended in the following particulars:

1. Effective as of January 1, 1998, by substituting the following for subsection 3.3 of the Plan:

"3.3. Matching Credits. Subject to such terms, conditions, and limitations as the Plan Administrator may, from time to time, impose, for each Plan Year, the Account of each Participant shall be credited with a 'Matching Credit' at such time as the Plan Administrator shall determine. A Participant's Matching Credit for each Plan Year beginning on or after January 1, 1998 shall be equal to the amount that, when added to the maximum amount of 'Matching Contributions' that would be credited to the Participant for that year under the Exchange's Tax Efficient Savings Plan ('TESP') if the Participant made 'Tax Efficient Contributions' to TESP for that year equal to the amount set forth in paragraph 3.2(b) above, does not exceed 3 percent of his base earnings (excluding bonus) for such Plan Year."

2. Effective as of November 16, 1998, by adding the following new subsection to the Plan to follow immediately after subsection 4.7 thereof:

"4.8. Cash-Out Election. Prior to a Participant's termination of active employment with the Exchange, the Participant may make a one-time election (a 'Cash-Out Election') to have his entire Account balance distributed to him, in a single lump sum payment, in cash, within 15 days following the date that such election is filed with the Exchange, subject to the following:

(a) The amount actually distributed to an electing Participant under this subsection 4.8 shall be equal to the Participant's entire Account balance, reduced by an amount equal to 10 percent of such balance. The portion of the Participant's Account balance that is not distributed to the Participant pursuant to this paragraph (a) shall be forfeited as a penalty.


(b) Notwithstanding the provisions of Section 3, for the remainder of the Plan Year in which the Cash-out Election is effective and for the next following Plan Year, no deferral election by the Participant under subsection 3.2 shall be given effect.

(c) A Participant's Cash-Out Election shall not be effective unless the Participant makes a corresponding election under the Chicago Mercantile Exchange Supplemental Executive Retirement Plan.

Notwithstanding the foregoing provisions of this subsection 4.8, and without limiting the amending authority reserved to the Exchange by the provisions of
Section 5 of the Plan, the Exchange may amend this subsection 4.8 at any time and in any respect, even as to amounts previously credited to a Participant's Account, to the extent that the Exchange determines that such amendment is necessary or desirable by reason of any change in tax laws or regulations or interpretations thereof, provided, however, that no such amendment shall apply with respect to amounts actually distributed under this subsection 4.8 before the later of the date on which the amendment is adopted or effective."

IN WITNESS WHEREOF, the undersigned officer of the Exchange has caused these presents to be executed on behalf of the Exchange this 8th day of December, 1998.

CHICAGO MERCANTILE EXCHANGE

By Craig S. Donohue
Its SVP & General Counsel

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Administrative Guidelines Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan

These administrative guidelines for the CME Senior Management Supplemental Deferred Savings Plan set forth the current guidelines for interpreting and administering certain sections of the Plan. The guidelines are to be used as a basic framework for the administration of the Plan, but may be changed at any time.

Section 2

2.1 Participant

Key employees are defined to include all CME vice presidents and above and the CME corporate secretary. Officers of CME subsidiaries are not eligible to participate unless they are also officers of the CME.

Section 3

3.2 Deferral Election

Newly eligible employees may become Participants on July 1 so long as they make deferral elections before July 1 and within 30 days of becoming a vice president or other eligible employee. A newly eligible employee may choose to defer the amount permitted by Section 3.2 of the Plan based upon either: (1) his or her total annual compensation (from January 1 of the calendar year in which participation begins through the end of that year) or (2) the compensation he or she receives after beginning participation in the plan.

All deferrals permitted by Section 3.2 of the Plan will be made and credited to Participants' accounts on a pro rata equal basis throughout the deferral period. For example, a Participant who elects to defer 10% of his compensation will receive an account credit equal to 10% of his compensation each pay period.

Unless otherwise determined by the Plan Administrator, deferral elections are irrevocable. The Plan Administrator retains the right to require participants to reduce a deferral election when that reduction is required to ensure that the Participant does not defer more than the total amount permitted by the Plan. The Plan Administrator also retains the right to make a distribution from a Participant's account if that distribution is required to ensure that the Participant has not deferred more than the total amount permitted by the Plan.

Effective 7/1/94; revised 4/4/96 and 7/1/96


(In 1994 only, a Participant is allowed to change his or her deferral election effective July 1, 1994.)

An eligible employee will be considered a Participant for the purpose of receiving the Matching Credit only if he or she makes a deferral election.

3.3 Matching Credits

Accounts will be credited with the Matching Credits each pay period.

3.4 Cash Balance Plan and TESP Trading Volume Make-Whole Credits

The TESP trading volume Make-Whole Credit will be credited to each Participant's account on December 31 of the year for which a trading volume contribution is authorized for TESP. The cash balance plan Make- Whole Credit will be credited to each Participant's account each pay period. These credits are calculated on not only the deferred amount, but also on any non-deferred amounts over the IRS compensation limit.

3.5 Adjustment of Accounts

At the time of initial enrollment, each Participant shall elect the assumed investments for his or her account balance. Participants may invest in no more than two funds at any time and investment allocations may be made in multiples of 50% only. If a Participant fails to make an assumed investment for his or her account balance, the account will receive adjustment credits based on the Exchange's earnings rate on operating funds investments.

Once a Participant makes an investment election, that election will stay in effect until it is changed, so long as the Participant continues to defer compensation as permitted by the Plan. Participants may reallocate their account balances and change investment direction with no greater frequency than once every six months.

Effective 7/1/94; revised 4/4/96 and 7/1/96


Exhibit 10.3 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

CHICAGO MERCANTILE EXCHANGE
DIRECTORS' DEFERRED COMPENSATION PLAN

                               TABLE OF CONTENTS
                               -----------------

SECTION 1................................................................... 1
     General................................................................ 1
          Purpose and Effective Date........................................ 1
          Administration.................................................... 1
          Plan Year......................................................... 1
          Source of Benefit Payments........................................ 1
          Expenses.......................................................... 2
          Applicable Laws................................................... 2
          Gender and Number................................................. 2
          Notices........................................................... 2
          Evidence.......................................................... 2
          Action by Exchange................................................ 2

SECTION 2................................................................... 2
     Participation.......................................................... 2
          Participant....................................................... 2
          Plan Not Guarantee of Continued Service........................... 2

SECTION 3................................................................... 3
     Deferred Compensation; Plan Accounting................................. 3
          Deferred Compensation Account..................................... 3
          Deferral Election................................................. 3
          Adjustment of Accounts............................................ 3

SECTION 4................................................................... 4
     Payment of Plan Benefits............................................... 4
          Vesting........................................................... 4
          Termination of Service on the Board............................... 4
          Beneficiary Designation........................................... 4
          Distributions to Disabled Persons................................. 4
          Benefits May Not be Assigned...................................... 4

SECTION 5................................................................... 5
     Amendment and Termination.............................................. 5
          Administrative Amendments......................................... 5
          Amendments and Termination........................................ 5

i

CHICAGO MERCANTILE EXCHANGE
DIRECTORS' DEFERRED COMPENSATION PLAN

SECTION 1

General

1.1. Purpose and Effective Date. Effective as of February 1, 1996 (the "Effective Date"), the Chicago Mercantile Exchange, an Illinois not-for-profit corporation (the "Exchange"), adopted the Chicago Mercantile Exchange Directors' Deferred Compensation Plan (the "Plan") to provide members of the Board of Directors of the Exchange (the "Board") with the opportunity to defer receipt of compensation, thereby assisting such members in planning for their future security.

1.2. Administration. The Exchange is the Plan Administrator of the Plan. The Plan Administrator may delegate all or any part of its responsibilities and powers to any person or persons selected by it. Any such delegation may be revoked at any time. Until the Plan Administrator takes action to the contrary, the President of the Exchange shall be delegated the power and responsibility to take all actions assigned to or permitted to be taken by the Plan Administrator under Sections 3 and 4 hereof. The Secretary of the Exchange (or, on behalf of the Secretary of the Exchange, any Corporate Secretary or Assistant Secretary) shall certify to any interested person the names of the employees of the Exchange who are, from time to time, authorized to act on behalf of the Plan Administrator and who are responsible for the day-to-day operation and administration of the Plan. Any interpretation of the Plan by the Plan Administrator and any decision made by the Plan Administrator or its delegate on any other matter within its discretion is final and binding on all persons.

1.3. Plan Year. The term "Plan Year" means the period commencing February 1, 1996 and ending December 31, 1996, and each calendar year commencing thereafter.

1.4. Source of Benefit Payments. Subject to the terms and conditions of the Plan, any amount payable to or on account of a Participant under this Plan shall be paid from the general assets of the Exchange or from one or more trusts, the assets of which are subject to the claims of the Exchange's general creditors. The amounts payable hereunder shall be reflected on the accounting records of the Exchange but shall not be construed to create, or require the creation of, a trust, custodial or escrow account. None of the individuals entitled to benefits under the Plan shall have any preferred claim on, or any beneficial ownership interest in, any assets of the Exchange or to any investment reserves, accounts, trusts or funds that the Exchange may purchase, establish or accumulate to aid in providing the benefits under the Plan, and any rights of such individuals under the Plan shall constitute unsecured contractual rights only. Nothing contained in the Plan shall constitute a guarantee by the Exchange that the assets of the Exchange shall be sufficient to pay any benefits to any


person. Nothing contained in the Plan and no action taken pursuant to its provisions shall create a trust or fiduciary relationship of any kind between the Exchange and any person.

1.5. Expenses. The expenses of administering the Plan shall be borne by the Exchange.

1.6. Applicable Laws. The Plan shall be construed and administered in accordance with the internal laws of the State of Illinois.

1.7. Gender and Number. Where the context admits, words in any gender shall include any other gender, words in the singular shall include the plural and the plural shall include the singular.

1.8. Notices. Any notice or document required to be given to or filed with the Plan Administrator will be properly filed if delivered or mailed by registered mail, postage prepaid, to the Secretary of the Exchange, at its principal executive offices. The Plan Administrator may, by advance written notice to affected persons, revise such notice procedure from time to time. Any notice required under the Plan may be waived by the person entitled to notice.

1.9. Evidence. Evidence required of anyone under the Plan may be by certificate, affidavit, document or other information which the person acting on it considers pertinent and reliable, and signed, made or presented by the proper party or parties.

1.10. Action by Exchange. Any action required or permitted to be taken by the Exchange shall be by resolution of its Board of Directors or its Executive Committee, or by a duly authorized officer of the Exchange.

SECTION 2

Participation

2.1. Participant. Each member of the Board (a "Director") may become a "Participant" in the Plan by making a deferral election in accordance with subsection 3.2.

2.2. Plan Not Guarantee of Continued Service. Participation in the Plan will not give any Director the right to be retained as a member of the Board nor any right or claim to any benefit under the Plan, unless such right or claim has specifically accrued under the terms of the Plan.

2

SECTION 3

Deferred Compensation; Plan Accounting

3.1. Deferred Compensation Account. The Plan Administrator shall maintain, or cause to be maintained, an Account in the name of each Participant which shall reflect the sum of the following amounts:

(a) the amount of stipend deferred by the Participant in accordance with the provisions of subsection 3.2; and

(b) the assumed rate of earnings to be credited to the Participant's Account in accordance with subsection 3.3.

3.2. Deferral Election. Subject to such terms, conditions, and limitations as the Plan Administrator may, from time to time, impose, each Director of the Exchange may make an irrevocable election to defer receipt of all or a portion of the stipend otherwise payable to him by the Exchange for any Plan Year, by filing a deferral election in writing with the Plan Administrator at such time and in such manner as the Plan Administrator shall provide, but in no case later than the day preceding the first day of such Plan Year. Notwithstanding the preceding sentence, for the Plan Year commencing February 1, 1996, a Director's deferral election shall be made no later than February 29, 1996 and shall be effective as of the first day of the month following the date such election is filed with the Plan Administrator. The Account of each Participant shall be credited with the amount of stipend deferred by the Participant as of the date on which such amount would otherwise have been paid to the Participant or such other date as the Plan Administrator may reasonably provide.

3.3. Adjustment of Accounts. The amounts credited to a Participant's Account in accordance with subsection 3.2 shall be adjusted from time to time in accordance with uniform procedures established by the Plan Administrator to reflect the value of an investment equal to the Participant's Account balance in one or more assumed investments that the Plan Administrator offers from time to time, and which the Participant directs the Plan Administrator to use for purposes of adjusting his Account. Such amount shall be determined without regard to taxes that would be payable with respect to any such assumed investment. The Plan Administrator may eliminate any assumed investment alternative at any time; provided, however, that the Plan Administrator may not retroactively eliminate any assumed investment alternative. To the extent permitted by the Plan Administrator, the Participant may elect to have different portions of his Account balance for any period adjusted on the basis of different assumed investments. Notwithstanding the election by Participants of certain assumed investments and the adjustment of their Accounts based on such investment decisions, the Plan does not require, and no trust or other instrument maintained in connection with the Plan shall require, that any assets or amounts which are set aside in trust or otherwise for the purpose of paying Plan benefits shall actually be invested in the investment alternatives selected by Participants.

3

SECTION 4

Payment of Plan Benefits

4.1. Vesting. A Participant shall have at all times a fully vested and nonforfeitable interest in the amounts theretofore credited or required to be credited to his Account under Section 3.

4.2. Termination of Service on the Board. Upon a Participant's death or termination of service on the Board, the Participant's entire Account balance shall be paid to or on account of the Participant in a single lump sum payment as soon as practicable after his date of death or termination of service on the Board.

4.3. Beneficiary Designation. Each Participant from time to time, by signing a form furnished by the Plan Administrator, may designate any legal or natural person or persons (who may be designated contingently or successively) to whom his benefits under the Plan are to be paid if he dies before he receives all of his benefits. A beneficiary designation form will be effective only when the signed form is filed with the Plan Administrator while the Participant is alive and will cancel all beneficiary designation forms filed earlier. Except as otherwise specifically provided in this subsection 4.3, if a deceased Participant failed to designate a beneficiary as provided above, or if the designated beneficiary of a deceased Participant dies before him or before complete payment of the Participant's benefits, his benefits shall be paid to the legal representative or representatives of the estate of the last to die of the Participant and his designated beneficiary.

4.4. Distributions to Disabled Persons. Notwithstanding the provisions of this Section 4, if, in the Plan Administrator's opinion, a Participant or beneficiary is under a legal disability or is in any way incapacitated so as to be unable to manage his financial affairs, the Plan Administrator may direct that payment be made to a relative or friend of such person for his benefit until claim is made by a conservator or other person legally charged with the care of his person or his estate, and such payment shall be in lieu of any such payment to such Participant or beneficiary. Thereafter, any benefits under the Plan to which such Participant or beneficiary is entitled shall be paid to such conservator or other person legally charged with the care of his person or his estate.

4.5. Benefits May Not be Assigned. Benefits payable under the Plan are expressly declared to be unassignable and non-transferable. Neither the Participant nor any other person shall have any voluntary or involuntary right to commute, sell, assign, pledge, anticipate, mortgage or otherwise encumber, transfer, hypothecate or convey in advance of actual receipt, any benefits payable under the Plan. No part of the benefits payable shall be, prior to actual payment, subject to seizure or sequestration for payment of any debts, judgements, alimony or separate maintenance owed by the Participant or any other person, or be transferred by operation of law in the event of the Participant's or any other person's bankruptcy or insolvency.

4

SECTION 5

Amendment and Termination

5.1 Administrative Amendments. The President, Executive Vice President Chief Administration Officer or Chief Financial Officer of the Exchange may make minor or administrative amendments to the Plan.

5.2 Amendments and Termination. The Exchange may amend the Plan at any time. The Exchange may terminate the Plan at any time provided that it has made adequate provisions for any amount payable by it under the terms of the Plan as in effect on the date it terminates the Plan. Upon termination of the Plan, the Exchange may, in its discretion applied in a uniform manner to all Participants, cause a lump sum payment of all benefits for all Participants at substantially the same time.

Dated this 23 day of February, 1996.

CHICAGO MERCANTILE EXCHANGE

By /s/ Gerald Beyer
   --------------------------------
Its   EVP
   --------------------------------

5

FIRST AMENDMENT
TO
CHICAGO MERCANTILE EXCHANGE
DIRECTORS' DEFERRED COMPENSATION PLAN

By virtue and in exercise of the amending authority reserved to the Chicago Mercantile Exchange (the "Exchange") by the provisions of subsection 5.2 of the Chicago Mercantile Exchange Directors' Deferred Compensation Plan (the "Plan"), and pursuant to the authority delegated to the undersigned officer of the Exchange by resolutions of its Board of Directors adopted on November 4, 1998 and November 16, 1998, the Plan is amended by adding the following new subsection to the Plan to follow immediately after subsection 3.3 thereof, effective November 16, 1998:

"3.4. Cash-Out Election. Prior to a Participant's termination of service on the Board, the Participant may make a one-time election (a 'Cash-Out Election') to have his entire Account balance distributed to him, in a single lump sum payment, in cash, within 15 days following the date that such election is filed with the Exchange, subject to the following:

(a) The amount actually distributed to an electing Participant under this subsection 3.4 shall be equal to the Participant's entire Account balance, reduced by an amount equal to 10 percent of such balance. The portion of the Participant's Account balance that is not distributed to the Participant pursuant to this paragraph (a) shall be forfeited as a penalty.

(b) Notwithstanding the foregoing provisions of this Section 3, for the remainder of the Plan Year in which the Cash-out Election is effective and for the next following Plan Year, no deferral election by the Participant under subsection 3.2 shall be given effect.

Notwithstanding the foregoing provisions of this subsection 3.4, and without limiting the amending authority reserved to the Exchange by the provisions of
Section 5 of the Plan, the Exchange may amend this subsection 3.4 at any time and in any respect, even as to amounts previously credited to a Participant's Account, to the extent that the Exchange determines that such amendment is necessary or desirable by reason of any change in tax laws or regulations or interpretations thereof, provided, however, that no such amendment shall apply with respect to amounts actually distributed under this subsection 3.4 before the later of the date on which the amendment is adopted or effective."


IN WITNESS WHEREOF, the undersigned officer of the Exchange has caused these presents to be executed on behalf of the Exchange this 8th day of December, 1998.

CHICAGO MERCANTELE EXCHANGE

By  /s/ Craig S. Donohue
  --------------------------------
   Its  SVP & General Counsel
      ----------------------------

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Exhibit 10.4 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

                               TABLE OF CONTENTS
                               -----------------

SECTION 1.................................................................   1
     General..............................................................   1
          1.1.  History, Purpose and Effective Date.......................   1
          1.2.  Administration............................................   1
          1.3.  Plan Year.................................................   1
          1.4.  Source of Benefit Payments................................   1
          1.5.  Expenses..................................................   2
          1.6.  Effect on Other Benefit Plans.............................   2
          1.7.  Applicable Laws...........................................   2
          1.8.  Gender and Number.........................................   2
          1.9.  Notices...................................................   2
          1.10. Evidence..................................................   2
          1.11. Action by Exchange........................................   2

SECTION 2.................................................................   3
     Participation........................................................   3
          2.1.  Participant...............................................   3
          2.2.  Plan Not Contract of Employment...........................   3

SECTION 3.................................................................   3
     Plan Benefits........................................................   3
          3.1.  Deferred Compensation Accounts............................   3
          3.2.  Deferred Compensation Credits.............................   3
          3.3.  Adjustment of Accounts....................................   3

SECTION 4.................................................................   4
     Payment of Plan Benefits.............................................   4
          4.1.  Vesting...................................................   4
          4.2.  Termination of Employment.................................   4
          4.3.  Hardship Distribution.....................................   4
          4.4.  Designation of Beneficiary................................   5
          4.5.  Distributions to Disabled Persons.........................   5
          4.6.  Benefits May Not be Assigned..............................   5
          4.7.  Withholding for Tax Liability.............................   6

SECTION 5.................................................................   6
     Amendment and Termination............................................   6
          5.1.  Administrative Amendments.................................   6
          5.2.  Amendment and Termination.................................   6

-i-

CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

SECTION 1

General

1.1. History, Purpose and Effective Date. Chicago Mercantile Exchange Supplemental Executive Retirement Plan (the "Plan") has been established by Chicago Mercantile Exchange, an Illinois not-for-profit corporation (the "Exchange"), effective as of January 1, 1993 (the "Effective Date") so that it may provide its eligible key management employees with an opportunity to receive additional retirement income from the Exchange. The Plan is intended to constitute a plan maintained primarily for the purpose of providing deferred compensation for a select group of management or highly compensated employees within the meaning of sections 201(2), 301(a)(3) and 401(a)(1) of the Employee Retirement Income Security Act of 1974 ("ERISA").

1.2. Administration. The Exchange is the Plan Administrator of the Plan. The Plan Administrator may delegate all or any part of its responsibilities and powers to any person or persons selected by it. Any such delegation may be revoked at any time. Until the Plan Administrator takes action to the contrary, the President of the Exchange shall be delegated the power and responsibility to take all actions assigned to or permitted to be taken by the Plan Administrator under sections 3 and 4 hereof. The Secretary of the Exchange (or, on behalf of the Secretary of the Exchange, any corporate Secretary or Assistant Secretary) shall certify to any interested person the names of the employees of the Exchange who are, from time to time, authorized to act on behalf of the Plan Administrator and who are responsible for the day-to-day operation and administration of the Plan. Any interpretation of the Plan by the Plan Administrator and any decision made by the Plan Administrator or its delegate on any other matter within its discretion is final and binding on all persons.

1.3. Plan Year. The term "Plan Year" means the calendar year.

1.4. Source of Benefit Payments. Subject to the terms and conditions of the Plan, any amount payable to or on account of a Participant under this Plan shall be paid from the general assets of the Exchange or from one or more trusts, the assets of which are subject to the claims of the Exchange's general creditors. The amounts payable hereunder shall be reflected on the accounting records of the Exchange but shall not be construed to create, or require the creation of, a trust, custodial or escrow account. None of the individuals entitled to benefits under the


Plan shall have any preferred claim on, or any beneficial ownership interest in, any assets of the Exchange or to any investment reserves, accounts, trusts or funds that the Exchange may purchase, establish or accumulate to aid in providing the benefits under the Plan, and any rights of such individuals under the Plan or any such reserves, accounts, trusts or funds shall constitute unsecured contractual rights only. Nothing contained in the Plan shall constitute a guarantee by the Exchange that the assets of the Exchange shall be sufficient to pay any benefits to any person. Nothing contained in the Plan and no action taken pursuant to its provisions shall create a trust or fiduciary relationship of any kind between the Exchange and an employee or any other person.

1.5. Expenses. The expenses of administering the Plan shall be borne by the Exchange.

1.6. Effect on Other Benefit Plans. Any amounts credited or paid under this Plan shall not be considered to be compensation for the purposes of any qualified plan (within the meaning of section 401(a) of the Internal Revenue Code of 1986, as amended (the "Code")) maintained by the Exchange. The treatment of such amounts under other employee benefit plans shall be pursuant to the provisions of such plans.

1.7. Applicable Laws. The Plan shall be construed and administered in accordance with the internal laws of the State of Illinois.

1.8. Gender and Number. Where the context admits, words in any gender shall include any other gender, words in the singular shall include the plural and the plural shall include the singular.

1.9. Notices. Any notice or document required to be given to or filed with the Plan Administrator will be properly filed if delivered or mailed by registered mail, postage prepaid, to the Secretary of the Exchange, at its principal executive offices. The Plan Administrator may, by advance written notice to affected persons, revise such notice procedure from time to time. Any notice required under the Plan may be waived by the person entitled to notice.

1.10. Evidence. Evidence required of anyone under the Plan may be by certificate, affidavit, document or other information which the person acting on it considers pertinent and reliable, and signed, made or presented by the proper party or parties.

1.11. Action by Exchange. Any action required or permitted to be taken by the Exchange shall be by resolution of its Board of Governors, or by a duly authorized officer of the Exchange.

-2-

SECTION 2

Participation

2.1. Participant. The key employees eligible to participate in the Plan and the conditions for such participation shall be established, from time to time, by the Exchange; provided, however, that Participants shall be limited to a select group of management or highly compensated employees within the meaning of sections 201(l), 301(a)(2) and 401(a)(1) of ERISA. If the Exchange determines that participation by one or more Participants shall cause the Plan to be subject to Part 2, 3 or 4 of Title I of ERISA, the entire interest of such Participant or Participants under the Plan shall be immediately paid to such Participant or shall otherwise be segregated from the Plan in the discretion of the Exchange, and such Participant or Participants shall cease to have any interest under the Plan.

2.2. Plan Not Contract of Employment. The Plan does not constitute a contract of employment, and participation in the Plan will not give any employee the right to be retained in the employ of the Exchange nor any right or claim to any benefit under the Plan, unless such right or claim has specifically accrued under the terms of the Plan.

SECTION 3

Plan Benefits

3.1. Deferred Compensation Accounts. The Plan Administrator shall maintain, or cause to be maintained, an Account in the name of each Participant which shall reflect the sum of the following amounts:

(a) the amount of "Deferred Compensation Credits" to be credited to the Participant's Account in accordance with subsection 3.2; and

(b) the assumed rate of earnings to be credited to the Participant's Account in accordance with subsection 3.3.

3.2. Deferred Compensation Credits. From time to time, the Executive Committee of the Exchange shall determine, in its sole discretion, a uniform percentage (if any) of base earnings that shall be awarded to each Participant as Deferred Compensation Credits. The amount of Deferred Compensation Credits awarded to a participant shall be credited to his Account as of the first business day of the next Plan Year quarter.

3.3. Adjustment of Accounts. The amounts credited to a Participant's Account in accordance with subsection 3.2 shall be

-3-

adjusted from time to time in accordance with uniform procedures established by the Plan Administrator to reflect the value of an investment equal to the Participant's Account balance in one or more assumed investments that the Plan Administrator offers from time to time, and which the Participant directs the Plan Administrator to use for purposes of adjusting his Account. Such amount shall be determined without regard to taxes that would be payable with respect to any such assumed investment. The Plan Administrator may eliminate any assumed investment alternative at any time; provided, however, that the Plan Administrator may not retroactively eliminate any assumed investment alternative. To the extent permitted by the Plan Administrator, the Participant may elect to have different portions of his Account balance for any period adjusted on the basis of different assumed investments. Notwithstanding the election by Participants of certain assumed investments and the adjustment of their Accounts based on such investment decisions, the Plan does not require, and no trust or other instrument maintained in connection with the Plan shall require, that any assets or amounts which are set aside in trust or otherwise for the purpose of paying Plan benefits shall actually be invested in the investment alternatives selected by Participants.

SECTION 4

Payment of Plan Benefits

4.1. Vesting. A Participant shall have at all times a fully vested and nonforfeitable interest in the amounts theretofore credited or required to be credited to his Account under Section 3.

4.2. Termination of Employment. After a Participant's death or termination of active employment, the Participant's entire Account balance shall be paid in cash or in kind to or on account of the Participant as follows:

(a) in a single lump sum payment as soon as practicable after his death or other termination date occurs or

(b) if elected by the Participant, in annual installments over a period of 5 or fewer years; provided, however, that any such election by a Participant who resigns or is dismissed prior to his retirement date (within the meaning of the Exchange's cash balance pension plan) shall require the consent of the Exchange.

4.3. Hardship Distributions. The Plan Administrator may, pursuant to rules adopted by it and applied in a uniform manner, accelerate the date of distribution of a Participant's Account because of Hardship at any time. "Hardship" shall mean an

-4-

unforeseeable, severe financial condition resulting from (a) a sudden and unexpected illness or accident of the Participant or his dependent (as defined in section 152(a) of the Code); (b) loss of the Participant's property due to casualty; or (c) other similar extraordinary and unforeseeable circumstances arising as a result of events beyond the control of the Participant, but which may not be relieved through other available resources of the Participant, as determined by the Plan Administrator in accordance with uniform rules adopted by it.

4.4. Designation of Beneficiary. Each Participant from time to time, by signing a form furnished by the Plan Administrator, may designate any legal or natural person or persons (who may be designated contingently or successively) to whom his benefits under the Plan are to be paid if he dies before he receives all of his benefits. A beneficiary designation form will be effective only when the signed form is filed with the Plan Administrator while the Participant is alive and will cancel all beneficiary designation forms filed earlier. Except as otherwise specifically provided in this subsection 4.4, if a deceased Participant failed to designate a beneficiary as provided above, or if the designated beneficiary of a deceased Participant dies before him or before complete payment of the Participant's benefits, his benefits shall be paid to the legal representative or representatives of the estate of the last to die of the Participant and his designated beneficiary.

4.5. Distributions to Disabled Persons. Not withstanding the provisions of this Section 4, if, in the Plan Administrator's opinion, a Participant or beneficiary is under a legal disability or is in any way incapacitated so as to be unable to manage his financial affairs, the Plan Administrator may direct that payment be made to a relative or friend of such person for his benefit until claim is made by a conservator or other person legally charged with the care of his person or his estate, and such payment shall be in lieu of any such payment to such Participant or beneficiary. Thereafter, any benefits under the Plan to which such Participant or beneficiary is entitled shall be paid to such conservator or other person legally charged with the care of his person or his estate.

4.6. Benefits May Not be Assigned. Neither the Participant nor any other person shall have any voluntary or involuntary right to commute, sell, assign, pledge, anticipate, mortgage or otherwise encumber, transfer, hypothecate or convey in advance of actual receipt the amounts, if any, payable hereunder, or any part hereof, which are expressly declared to be unassignable and non- transferable. No part of the amounts payable shall be, prior to actual payment, subject to seizure or sequestration for payment of any debts, judgements, alimony or separate maintenance owed by the Participant or any other person, or be transferred by

-5-

operation of law in the event of the Participant's or any other person's bankruptcy or insolvency.

4.7. Withholding for Tax Liability. The Exchange may withhold or cause to be withheld from any payment of benefits made pursuant to the Plan any taxes required to be withheld and such sum as the Exchange may reasonably estimate to be necessary to cover any taxes for which the Exchange may be liable and which may be assessed with regard to such payment.

SECTION 5

Amendment and Termination

5.1. Administrative Amendments. The President of the Exchange may make minor or administrative amendments to the Plan.

5.2. Amendment and Termination. The Exchange may amend or terminate the Plan at any time; provided that it has made adequate provisions for any amount payable by it under the terms of the Plan as in effect on the date it terminates the Plan. Upon termination of the Plan, the Exchange may, in its discretion applied in a uniform manner to all Participants, cause a lump sum payment of all benefits for all Participants at substantially the same time.

Dated this 23rd day of July, 1993.

CHICAGO MERCANTILE EXCHANGE

By /s/ Gerald Beyer
  ----------------------------------
Its Executive V.P. & CFO
   ---------------------------------

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FIRST AMENDMENT
TO
CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

Pursuant to the authority reserved to the Chicago Mercantile Exchange (the "Exchange") by subsection 5.2 of the Chicago Mercantile Exchange Supplemental Executive Retirement Plan (the "Plan") and exercised by the Executive Committee of its Board of Governors, the Plan is amended, effective as of January 1, 1997, in the following particulars:

1. By substituting the following for subsection 3.2 of the Plan:

"3.2. Deferred Compensation Credits. Unless otherwise determined by the Executive Committee of the Exchange, for each Plan Year beginning on or after January 1, 1996, 8 percent of each Participant's base earnings and bonus paid in such Plan Year shall be awarded as Deferred Compensation Credits. The amount of Deferred Compensation Credits awarded to a Participant for any such Plan Year shall be credited to his Account as of the first business day of the next following Plan Year."

2. By substituting the following for Section 4 of the Plan:

"SECTION 4

Payment of Plan Benefits

4.1. Vesting. A Participant shall have at all times a fully vested and nonforfeitable interest in (i) the amount of any Deferred Compensation Credits credited to the Participant's Account as of December 31, 1996, and (ii) any assumed investment adjustment theretofore or thereafter credited with respect to such Deferred Compensation Credits under subsection 3.3. A Participant shall have a fully vested and nonforfeitable interest in the amount of any Deferred Compensation Credits credited to the Participant's Account in accordance with subsection 3.2 as of the first business day of any Plan Year beginning on or after January 1, 1997 ("Post-1996 Credits"), and any assumed investment adjustments thereon, as of the last day of the fourth Plan Year following the Plan Year as of which such Deferred day Credits are credited to the Participant's Account. Prior thereto, the amount of any Post-1996 Credits (and any assumed investment adjustments thereon) shall be vested and nonforfeitable as of the last day of the Plan Year that follows the Plan Year as of which such Post-1996 Credits were credited to the Participant's Account by the number of Plan Years determined in accordance with the following schedule:


Number of Plan Years following the         The vested percentage
Plan Year as of which the  Post-1996       shall be
Credits were credited to his Account       ---------------------
------------------------------------
three Plan Years                              66 2/3%
two Plan Years                                33 1/3%
one Plan Year                                      0%

     4.2.  Accelerated Vesting. Notwithstanding the provisions of subsection
4.1, if a Participant's termination of active employment with the Exchange
occurs on account of his death, retirement after attaining age 55 years and
completing 15 years of continuous service with the Exchange, or disability, the
amount of any Post-1996 Credits (and any assumed investment adjustments thereon)
not theretofore vested shall be vested and nonforfeitable as of the last day of
the Plan Year that follows the Plan Year as of which such Post-1996 Credits were
credited to the Participant's Account by the number of Plan Years determined in
accordance with the following schedule (in lieu of the schedule in subsection
4.1):

Number of Plan Years following             The vested percentage
the Plan Year as of which the              shall be
Post-1996 Credits were credited            ----------------------
to his Account
-------------------------------
four Plan Years                               100%
three Plan Years                               80%
two Plan Years                                 60%
one Plan Year                                  40%

If a Participant's termination of active employment occurs under this subsection 4.2, the portion of any Post-1996 Credits (and any investment adjustments thereon) that are not theretofore vested in accordance with subsection 4.1 or the foregoing provisions of this subsection 4.2 and which shall be vested and nonforfeitable as of the last day of the Plan Year in which credited to the Participant's Account shall be twenty percent (20%).

4.3. Termination of Employment. After a Participant's death or termination of active employment, the vested portion of the Participant's Account balance shall be paid in cash or in kind to or on account of the Participant as follows:

(a) in a single lump sum payment as soon as practicable after his death or other termination date occurs, or

(b) if elected by the Participant, in annual installments over a period of 5 or fewer years; provided, however, that any such election by a Participant who resigns or

-2-

is dismissed prior to his retirement date (within the meaning of the Exchange's cash balance pension plan) shall require the consent of the Exchange.

Any portion of his Account balance that is not vested in accordance with subsection 4.1 or 4.2 at his termination of active employment shall be forfeited.

4.4. Hardship Distributions. The Plan Administrator may, pursuant to rules adopted by it and applied in a uniform manner, accelerate the date of distribution of a Participant's vested Account because of Hardship at any time. "Hardship" shall mean an unforeseeable, severe financial condition resulting from (a) a sudden and unexpected illness or accident of the Participant or his dependent (as defined in section 152(a) of the Code); (b) loss of the Participant's property due to casualty; or (c) other similar extraordinary and unforeseeable circumstances arising as a result of events beyond the control of the Participant, but which may not be relieved through other available resources of the Participant, as determined by the Plan Administrator in accordance with uniform rules adopted by it.

4.5. Designation of Beneficiary. Each Participant from time to time, by signing a form furnished by the Plan Administrator, may designate any legal or natural person or persons (who may be designated contingently or successively) to whom his vested benefits under the Plan are to be paid if he dies before he receives all of his vested benefits. A beneficiary designation form will be effective only when the signed form is filed with the Plan Administrator while the Participant is alive and will cancel all beneficiary designation forms filed earlier. Except as otherwise specifically provided in this subsection 4.5, if a deceased Participant failed to designate a beneficiary as provided above, or if the designated beneficiary of a deceased Participant dies before him or before complete payment of the Participant's benefits, his benefits shall be paid to the legal representative or representatives of the estate of the last to die of the Participant and his designated beneficiary.

4.6. Distributions to Disabled Persons. Notwithstanding the provisions of this Section 4, if, in the Plan Administrator's opinion, a Participant or beneficiary is under a legal disability or is in any way incapacitated so as to be unable to manage his financial affairs, the Plan Administrator may direct that payment be made to a relative or friend of such person for his benefit until claim is made by a conservator or other person legally charged with the care of his person or his estate, and such payment shall be in lieu of any such payment to such Participant or beneficiary. Thereafter, any benefits under the Plan to which such Participant or beneficiary is entitled shall be paid to such

-3-

conservator or other person legally charged with the care of his person or his estate.

4.7. Benefits May Not be Assigned. Neither the Participant nor any other person shall have any voluntary or involuntary right to commute, sell, assign, pledge, anticipate, mortgage or otherwise encumber, transfer, hypothecate or convey in advance of actual receipt the amounts, if any, payable hereunder, or any part hereof, which are expressly declared to be unassignable and non- transferable. No part of the amounts payable shall be, prior to actual payment, subject to seizure or sequestration for payment of any debts, judgements, alimony or separate maintenance owed by the Participant or any other person, or be transferred by operation of law in the event of the Participant's or any other person's bankruptcy or insolvency.

4.8. Withholding for Tax Liability. The Exchange may withhold or cause to be withheld from any payment of benefits made pursuant to the Plan any taxes required to be withheld and such sum as the Exchange may reasonably estimate to be necessary to cover any taxes for which the Exchange may be liable and which may be assessed with regard to such payment."

IN WITNESS WHEREOF, the undersigned officer of the Exchange has caused these presents to be executed on behalf of the Exchange this 31st day of December, 1996.

CHICAGO MERCANTILE EXCHANGE

By /s/ Paul B. O'Kelly,
   ----------------------------------------------
   Its Senior Vice President and General Counsel
       ------------------------------------------

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SECOND AMENDMENT
TO THE
CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

Pursuant to the authority given to the President of the Exchange in Section 5.1 of the Plan to make minor or administrative Plan amendments, the Plan is amended, effective December 1, 1997, in the following ways:

1. By substituting the following text for subsection 4.1 of the Plan:

"4.1. Vesting. A Participant shall have at all times a fully vested and nonforfeitable interest in (i) the amount of any Deferred Compensation Credits credited to the Participant's Account as of December 31, 1996, and (ii) any assumed investment adjustment theretofore or thereafter credited with respect to such Deferred Compensation Credits under subsection 3.3. A Participant shall have a fully vested and nonforfeitable interest in the amount of any Deferred Compensation Credits credited to the Participant's Account in accordance with subsection 3.2 as of the first business day of any Plan Year beginning on or after January 1, 1997 ("Post-1996 Credits"), and any assumed investment adjustments thereon, as of December 10 of the fourth Plan Year following the Plan Year as of which such Deferred Compensation Credits are credited to the Participant's Account. Prior thereto, the amount of any Post-1996 Credits (and any assumed investment adjustments thereon) shall be vested and nonforfeitable as of December 10 of the Plan Year that follows the Plan Year as of which such Post-1996 Credits were credited to the Participant's Account by the number of Plan Years determined in accordance with the following schedule:

Number of Plan Years following the      The vested percentage shall be
Plan Year as of which the Post-1996     ------------------------------
Credits were credited to his Account
------------------------------------

Three Plan Years                        66 2/3%
Two Plan Years                          33 1/3%
One Plan Year                            0%"

2. By substituting the following text for subsection 4.2 of the Plan:

"4.2. Accelerated Vesting. Notwithstanding the provisions of subsection 4.1, if a Participant's termination of active employment with the Exchange occurs on account of his death, retirement after attaining age 55 years and completing 15 years of continuous service with the Exchange, or disability, the amount of any Post-1996 Credits (and any assumed investment adjustments thereon) not theretofore vested shall be vested and nonforfeitable as of December 10 of the Plan Year that follows the Plan Year as of which such Post-1996 Credits were credited to


the Participant's Account by the number of Plan Years determined in accordance with the following schedule (in lieu of the schedule in subsection 4.1):

Number of Plan Years following the      The vested percentage shall be
Plan Year as of which the Post-1996     ------------------------------
Credits were credited to his Account
------------------------------------

Four Plan Years                         100%
Three Plan Years                         80%
Two Plan Years                           60%
One Plan Year                            40%

If a Participant's termination of active employment occurs under this subsection 4.2, the portion of any Post-1996 Credits (and any investment adjustments thereon) that are not theretofore vested in accordance with subsection 4.1 or the foregoing provisions of this subsection 4.2 and which shall be vested and nonforfeitable as of December 10 of the Plan Year in which credited to the Participant's Account shall be twenty percent (20%)."

The undersigned officer of the Exchange has caused this amendment to be executed on behalf of the President of the Exchange this 14th day of January, 1998.

CHICAGO MERCANTILE EXCHANGE

By: /s/ Paul B. O'Kelly
    ---------------------------------------

Its:  Senior Vice President and General Counsel


THIRD AMENDMENT
TO
CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT PLAN

By virtue and in exercise of the amending authority reserved to the Chicago Mercantile Exchange (the "Exchange") by the provisions of subsection 5.2 of the Chicago Mercantile Exchange Supplemental Executive Retirement Plan (the "Plan"), and pursuant to the authority delegated to the undersigned officer of the Exchange by resolutions of its Board of Directors adopted on November 4, 1998 and November 16, 1998, the Plan is amended, effective as of November 16, 1998, by adding the following new subsections to the Plan to follow immediately after subsection 4.8 thereof.

"4.9. Cash-Out Election. Prior to a Participant's termination of active employment with the Exchange, the Participant may make a one-time election (a 'Cash-Out Election') to have the entire nonforfeitable balance of his Account distributed to him, in a single lump sum payment, in cash, within 15 days following the date that such election is filed with the Exchange, subject to the following:

(a) The Participant's nonforfeitable Account balance shall be determined under subsection 4.1 of the Plan as though the Participant had terminated from the employ of the Exchange on the date on which the Cash-Out Election is filed and, for this purpose, the accelerated vesting provisions of subsection 4.2 shall not apply even if the Participant has attained age 55 and completed 15 years of continuous service with the Exchange at the time of his election.

(b) The amount actually distributed to an electing Participant under this subsection 4.9 shall be equal to the Participant's nonforfeitable Account balance determined under subparagraph (a) next above, reduced by a penalty amount equal to 10 percent of such nonforfeitable Account balance. The 10 percent penalty amount shall be deducted from the Participant's Account and forfeited. The portion of the Participant's Account balance that is not distributable by reason of subsection 4.1 or 4.2 shall then be treated as set forth in subsection 4.10.

(c) A Participant's Cash-Out Election shall not be effective unless the Participant makes a corresponding election under the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan.

4.10. Forfeitures and Adjustments for Partial Distributions. In the event that a Hardship Distribution under subsection 4.4 or a distribution pursuant to a Cash-Out Election under subsection 4.9 is made with respect to any Participant, the portion of his Account balance that is not distributable by reason of subsection 4.1 or 4.2 (but not any vested amount that is forfeited as a penalty under subsection 4.9) shall be credited to a "Subaccount" maintained in the


Participant's name which shall be adjusted from time to time in accordance with subsection 3.3 based on the assumed investment alternatives selected by the Participant thereunder. Upon the Participant's subsequent termination of employment or any subsequent distribution to the Participant, the balance in his Subaccount shall be treated as follows:

(a) If the Participant's subsequent termination of employment or distribution occurs after such Subaccount is fully vested and nonforfeitable in accordance with subsection 4.1 or 4.2, the balance of such Subaccount shall be distributable to or on behalf of the Participant in accordance with Section 4.

(b) If the Participant's subsequent termination of employment or distribution occurs before the balance of the Subaccount is fully vested, the nonforfeitable balance in the Subaccount shall be an amount determined as follows:

(i) first, an amount equal to the nonforfeitable balance of his Account at the time of the previous Hardship Distribution or Cash-out Election (including the 10 percent penalty amount in the case of a Cash-out Election) shall be added to his Subaccount balance;

(ii) next, his Subaccount balance, as adjusted under subparagraph
(i) next above, shall be reduced to an amount equal to the product of such balance multiplied by his vested percentage determined under subsection 4.1 or 4.2, as applicable, at the time of the subsequent termination or distribution; and

(iii) finally, the adjusted Subaccount balance, as determined under subparagraph (ii) next above, shall be reduced (but not below zero) by an amount equal to the amount added to his Subaccount balance under subparagraph (i) next above.

The amount determined after the foregoing adjustments shall be nonforfeitable and distributable to or for his benefit in accordance with Section 4. The portion of his Subaccount balance, if any, which is not vested in accordance with this subsection 4.10 shall be forfeited if the Participant has terminated active employment with the Exchange, or, if the Participant's employment has not terminated, shall continue to be adjusted in accordance with subsection 3.3, and shall be further adjusted under this subsection 4.10 upon the Participant's subsequent termination of employment or any subsequent distribution in accordance with the terms of the Plan.

Notwithstanding the foregoing provisions of this subsection 4.9, and without limiting the amending authority reserved to the Exchange by the provisions of
Section 5 of the Plan, the Exchange may amend this subsection 4.9 at any time and in any respect, even as to amounts previously credited to a Participant's Account, to the extent that the Exchange determines that

-2-

such amendment is necessary or desirable by reason of any change in tax laws or regulations or interpretations thereof; provided, however, that no such amendment shall apply with respect to amounts actually distributed under this subsection 4.9 before the later of the date on which the amendment is adopted or effective."

IN WITNESS WHEREOF, the undersigned officer of the Exchange has caused these presents to be executed on behalf of the Exchange this day of December, 1998.

CHICAGO MERCANTILE EXCHANGE

By /s/ Craig S. Donohue
   ------------------------------------

  Its SVP & General Counsel
      ---------------------------------

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Exhibit 10- Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT TRUST

TABLE OF CONTENTS

ARTICLE                                                                    PAGE
-------                                                                    ----
I    The Trust and the Plan ..............................................    2
          Establishment of Trust .........................................    2
          Irrevocability .................................................    2
          Name ...........................................................    2
          Plan ...........................................................    2
          Plan Administrator .............................................    2

II   Management and Control of Trust Fund Assets..........................    2
          The Trust Fund .................................................    2
          Trust Contributions ............................................    2
          Investment Guidelines ..........................................    2
          General Powers .................................................    3

III  Accounting and Distribution of Trust Assets..........................    4
          Statement of Account ...........................................    4
          Benefit Payments ...............................................    5
          Participant Subaccounts.........................................    5

IV   Compensation, Expenses and Liability ................................    6
          Compensation and Expenses ......................................    6
          Liability of Trustee ...........................................    6

V    Trust Fund Assets ...................................................    6
          Use of Trust Assets ............................................    6
          Claims of Creditors ............................................    6
          Claims of Participants .........................................    8
          Spendthrift Clause .............................................    8
          No Funding Requirement .........................................    8

VI   Tax Matters .........................................................    8
          Nature of Trust ................................................    8
          Federal and State Reporting Requirements .......................    8

VII  Miscellaneous .......................................................    9
          Disagreement as to Acts ........................................    9
          Persons Dealing With Trustee ...................................    9
          Evidence .......................................................    9
          Waiver of Notice ...............................................    9
          Counterparts ...................................................    9
          Governing Laws .................................................    9
          Successors, Etc. ...............................................    9
          Service of Legal Process .......................................    9

VIII Changes of Trustee...................................................   10
          Resignation ....................................................   10
          Removal of Trustee .............................................   10

-i-

ARTICLE                                                                    PAGE
-------                                                                    ----
          Duties of Resigned or Removed Trustee and of
               Successor Trustee .........................................   10

IX   Amendment and Termination ...........................................   10
          Amendment ......................................................   10
          Termination Upon Satisfaction of Plan Liabilities ..............   10
          Termination With Consent of Participants .......................   11

-ii-

Exhibit 10.5

CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT TRUST

THIS AGREEMENT, made and entered into at Chicago, Illinois, this 23rd day of July, 1993, by Chicago Mercantile Exchange, an Illinois not-for-profit corporation (the "Exchange"), and William J. Brodsky, as trustee (the "Trustee"),

WITNESSETH THAT:

WHEREAS, the Exchange has established the Chicago Mercantile Exchange Supplemental Executive Retirement Plan (the "Plan") to provide key management employees of the Exchange with an opportunity to receive additional retirement income from the Exchange; and

WHEREAS, the Exchange wishes to establish a trust (hereinafter called "Trust") and to contribute to the Trust assets that shall be held therein, subject to the claims of the Exchange's creditors in the event of its Insolvency, as herein defined, until paid to Plan participants and their beneficiaries in such manner and at such times as specified in the Plan; and

WHEREAS, it is the intention of the parties that this Trust shall constitute an unfunded arrangement and shall not affect the status of the Plan as an unfunded plan maintained for the purpose of providing deferred compensation for a select group of management or highly compensated employees for purposes of Title I of the Employee Retirement Income Security Act of 1974; and

WHEREAS, it is the intention of the Exchange to make contributions to the Trust to provide itself with a source of funds to assist it in meeting its liabilities under the Plan and for such other corporate purposes as are consistent with the terms of the Trust;

NOW, THEREFORE, in consideration of the premises and mutual covenants herein contained, the Trustee hereby accepts its appointment as such, effective as of the day and year first above written, and the parties hereto agree that the Trust shall be comprised, held and disposed of as follows:


ARTICLE I

The Trust and the Plan

I-1. Establishment of Trust. The Exchange hereby deposits with Trustee in trust $71,857, which shall become the principal of the Trust to be held, administered and disposed of by Trustee as provided in this Trust.

I-2. Irrevocability. The Trust hereby established shall be irrevocable.

I-3. Name. This Agreement and the Trust hereby evidenced shall be known as Chicago Mercantile Exchange Supplemental Executive Retirement Trust.

I-4. Plan. The Secretary of the Exchange shall deliver to the Trustee a certified copy of the Plan document and a copy of any amendments thereto for convenience of reference, but the rights, powers and duties of the Trustee shall be governed solely by the terms of this Agreement without reference to the provisions of the Plan.

I-5. Plan Administrator. The Exchange is the Plan Administrator of the Plan to which this Trust relates and the Secretary of the Exchange will certify to the Trustee the names of the employees of the Exchange who are, from time to time, authorized to act on behalf of the Plan Administrator and to receive notices which the Trustee is required under the terms of this Agreement to provide to the Plan Administrator.

ARTICLE II

Management and Control of Trust Fund Assets

II-1. The Trust Fund. The term "Trust Fund" means all property of every kind held by the Trustee pursuant to the terms of the Plan.

11-2. Trust Contributions. The Exchange, in its sole discretion, may at any time, or from time to time, make additional deposits of cash or other property in trust with the Trustee to be held, invested and distributed in accordance with the provisions of this Agreement.

11-3. Investment Guidelines. The Plan Administrator may, from time to time, establish investment guidelines for the Trustee with respect to the investment, retention, disposition and reinvestment of the assets of the Trust Fund by writing filed with the Trustee.

-2-

11-4. General Powers. Subject to the provisions of paragraph II-3, with respect to the Trust Fund, the Trustee shall have the following powers, rights and duties in addition to those provided elsewhere in this Agreement or by law:

(a) to receive and hold all contributions paid to it by the Exchange; provided, however, that the Trustee shall have no duty to require any contributions to be made, or to determine that any of the contributions received comply with the conditions and limitations of the Plan;

(b) to invest and reinvest the Trust Fund in property of any kind, real or personal, other than securities of the Exchange or any subsidiary or affiliate thereof;

(c) to manage, operate, sell, contract to sell, convey, exchange, partition, transfer, abandon, and otherwise deal with all property, real or personal, in such manner, for such consideration, and on such terms and conditions as the Trustee shall decide;

(d) to retain in cash (pending investment, reinvestment or payment of benefits) any reasonable portion of the Trust Fund and to deposit cash in any depository selected by the Trustee;

(e) to make payments from the Trust Fund in accordance with paragraph III-2;

(f) to compromise, contest, arbitrate, settle or abandon claims and demands;

(g) to begin, maintain or defend any litigation necessary in connection with the administration of the Trust;

(h) to have all rights of an individual owner, including the power to give proxies, to vote stocks, to join in or oppose (alone or jointly with others) voting trusts, mergers, consolidations, foreclosures, reorganizations, recapitalizations or liquidations, and to exercise or sell stock subscription or conversion rights; provided, however, that if an insurance policy is held as an asset of the Trust, the Trustee shall have no power to name a beneficiary of the policy other than the Trust, to assign the policy (as distinct from conversion of the policy to a different form) other than to a successor trustee, or to loan to any person (other than the Exchange) the proceeds of any borrowing against such policy;

(i) to hold securities or other property in the name of the Trustee or any nominee or nominees of the Trustee, or

-3-

in such other form as the Trustee shall determine, with or without disclosing the Trust relationship, provided that the records of the Trustee shall indicate the actual ownership of such securities or other property;

(j) to deposit securities with a corporate depository, in which event, the certificates representing securities, including those in bearer form, may be held in bulk form with, and may be merged into, certificates of the same class of the same issuer which constitute assets of other accounts or owners, without certification as to the ownership attached and to participate in and use a book-entry system for the transfer or pledge of securities held by the Trustee or by a corporate depository; provided, however, that the Trustee shall at all times maintain a separate and distinct record of the securities owned by the Trust Fund;

(k) to retain any funds or property subject to any dispute without liability for the payment of interest, or to decline to make payment or delivery thereof until final adjudication is made by a court of competent jurisdiction;

(1) to employ agents, attorneys, investment counsel, accountants or other persons (who also may be employed by or represent the Exchange) for such purposes as the Trustee considers desirable;

(m) to furnish the Exchange with such information in the Trustee's possession as the Exchange may need for tax or other purposes; and

(n) to perform any and all other acts which are, in the Trustee's judgment, necessary or appropriate for the proper and advantageous management, investment and distribution of the Trust Fund; provided, however, the Trustee will not commit or omit any action or permit any status to exist which would result in the Trustee engaging in, or carrying on, or otherwise operating a business and dividing the gains therefrom, within the meaning of section 301.7701-2 of the Procedure and Administrative Regulations promulgated pursuant to the Internal Revenue Code of 1986, as amended (the "Code").

ARTICLE III

Accounting and Distribution of Trust Assets

III-1. Statement of Account. Within 60 days after the last day of each fiscal year, the Trustee shall furnish to the Plan

-4-

Administrator a written report showing the fair market value of the Trust Fund as of that date, and all investments of the Trust Fund, and receipts and disbursements and other transactions made by the Trustee during that fiscal year, with respect to the Trust Fund. The records of the Trust may be audited at any time and from time to time by the Plan Administrator.

III-2. Benefit Payments. Subject to the provisions of paragraph V-2, the Trustee shall make payments to Participants in such amounts and at such times as the Plan Administrator may certify to the Trustee are then payable under the Plan, subject to the following:

(a) The Trustee shall have no responsibility to inquire as to whether a payee is entitled to the payment, or as to whether a payment is proper, and shall have no liability for a payment made in good faith without actual notice or knowledge of the changed condition or status of the payee.

(b) If any check for any payment directed to be made from the Trust Fund has been mailed by the Trustee, by regular United States mail, to the last address of the payee furnished to the Trustee and is returned unclaimed, the Trustee shall notify the Plan Administrator.

(c) The Trustee may reserve such reasonable amount from any payment as it shall deem necessary to pay any estate, inheritance, income or other tax, charge or assessment attributable to any payment or may require such release or other document from any taxing authority and such indemnity from the intended payee as the Trustee shall deem necessary for its protection.

(d) If a Participant is no longer entitled to participate in the Plan pursuant to subsection 2.1 thereof, the Trustee shall distribute to such Participant an amount equal to his interest in the Plan, or shall transfer Trust assets equal in value to such Participant's Plan interest, to any successor trustee for the benefit of such Participant, as directed by the Exchange.

III-3. Participant Subaccounts. If directed by the Plan Administrator, the Trustee shall establish and maintain a subaccount for each Participant in the Plan to reflect each Participant's interest in the Trust assets. The Plan Administrator shall furnish such information as the Trustee requires (such as the amount credited to the Participant's account under the plan and the assumed investment alternatives applicable to such Participant's account) in order to permit the Trustee to establish and maintain subaccounts under the Trust.

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ARTICLE IV

Compensation, Expenses and Liability

IV-1. Compensation and Expenses. The Exchange shall pay all of the Trustee's expenses, taxes and charges (including fees of persons employed by the Trustee in accordance with subparagraph II-4(l)) incurred in connection with the collection, administration, management, investment, protection and distribution of the Trust Fund. The Trustee is authorized to make any such payments from the Trust Fund to the extent that the Exchange fails to make such payments.

IV-2. Liability of Trustee. The Trustee shall not be liable for any action taken, or omitted to be taken, in good faith under this Trust Agreement including, without limitation, following in good faith any direction of the Plan Administrator given in accordance with the terms of this Agreement. The Exchange hereby agrees to indemnify the Trustee for and to hold it harmless against any and all liabilities, losses, costs or expenses (including legal fees and expenses) of whatsoever kind and nature which may be imposed on, incurred by or asserted against the Trustee at any time by reason of the Trustee's service under this Agreement and the Plan or in defense of any litigation arising in connection with this Trust if the Trustee did not act dishonestly or in willful violation of the law or regulation under which such liability, loss, cost or expense arose.

ARTICLE V

Trust Fund Assets

V-1. Use of Trust Assets. Subject to the provisions of paragraph V-2 and the provisions of paragraphs X-1 and X-2, the assets of the Trust shall be used solely for the purpose of providing benefits under the Plan.

V-2. Claims of Creditors.

(a) The Trustee shall cease payment of benefits to Plan participants and their beneficiaries if the Exchange is Insolvent. The Exchange shall be considered "Insolvent" for purposes of this Agreement if (i) the Exchange is unable to pay its debts as they become due, or (ii) the Exchange is subject to a pending proceeding as a debtor under the United States Bankruptcy Code.

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(b) At all times during the continuance of this Trust, the principal and income of the Trust shall be subject to claims of general creditors of the Exchange under federal and state law as set forth below.

(i) The Board of Governors and the President and Chief Executive Officer of Exchange shall have the duty to inform the Trustee in writing of the Exchange's Insolvency. If a person claiming to be a creditor of Exchange alleges in writing to the Trustee that the Exchange has become Insolvent, the Trustee shall determine whether the Exchange is Insolvent and, pending such determination, the Trustee shall discontinue payment of benefits to Plan participants or their beneficiaries.

(ii) Unless the Trustee has actual knowledge of the Exchange's Insolvency, or has received notice from the Exchange or a person claiming to be a creditor alleging that the Exchange is Insolvent, the Trustee shall have no duty to inquire whether the Exchange is Insolvent. The Trustee may in all events rely on such evidence concerning the Exchange's solvency as may be furnished to the Trustee and that provides the Trustee with a reasonable basis for making a determination concerning the Exchange's solvency.

(iii) If at any time the Trustee has determined that the Exchange is Insolvent, the Trustee shall discontinue payments to Plan participants or their beneficiaries and shall hold the assets of the Trust for the benefit of the Exchange's general creditors. Nothing in this Agreement shall in any way diminish any rights as general creditors of the Exchange with respect to benefits due under the Plan or otherwise.

(iv) The Trustee shall resume the payment of benefits to Plan participants or their beneficiaries in accordance with paragraph III-2 of this Trust Agreement only after the Trustee has determined that the Exchange is not Insolvent (or is no longer Insolvent).

(c) Provided that there are sufficient assets, if the Trustee discontinues the payment of benefits from the Trust pursuant to subparagraph V-2(b) hereof and subsequently resumes such payments, the first payment following such discontinuance shall include the aggregate amount of all payments due to Plan participants or their beneficiaries under the terms of

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the Plan for the period of such discontinuance, less the aggregate amount of any payments made to Plan participants or their beneficiaries by the Exchange in lieu of the payments provided for hereunder during any such period of discontinuance.

V-3. Claims of Participants. Neither the Plan participants nor the Plan shall have any preferred claim on, or any beneficial ownership in, any assets of the Trust, or be entitled to any payment from the Trust, and all rights of a participant created under the Plan shall constitute unsecured contractual rights of the participant and each participant shall be an unsecured creditor of the Exchange with respect to such rights created under the Plan.

V-4. Spendthrift Clause. No Plan participant or beneficiary shall have any voluntary or involuntary right to commute, sell, assign, pledge, anticipate, mortgage or otherwise encumber, transfer, hypothecate or convey in advance of actual receipt the amounts, if any, payable from this Trust, or any part hereof, which are expressly declared to be unassignable and nontransferable. No part of the amounts payable from this Trust shall be, prior to actual payment, subject to seizure or sequestration for payment of any debts, judgements, alimony or separate maintenance owed by the Participant or beneficiary, or be transferred by operation of law in the event of the Participant's or beneficiary's bankruptcy or insolvency.

V-5. No Funding Requirement. It is intended that neither the Plan nor the Trust shall be subject to the provisions of Part 4 of Title I of the Employee Retirement Income Security Act of 1974, as amended, and neither the participants nor the Plan shall have any right to require the Exchange to make any contribution to the Trust.

ARTICLE VI

Tax Matters

VI-1. Nature of Trust. The Trust is intended to be a grantor trust, of which the Exchange is the grantor, within the meaning of subpart E, part I, subchapter J, chapter 1, subtitle A of the Code, and shall be construed accordingly.

VI-2. Federal and State Reporting Requirements. The Trustee shall withhold federal, state and local taxes which are assessable on amounts paid to Plan participants at the direction of the Plan Administrator at such rate, if any, as may be certified by the Plan Administrator as the appropriate rate under applicable laws and shall transmit the amount withheld to the applicable taxing authority at the direction of the Plan

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Administrator. The Trustee shall furnish to the Plan participants all withholding and benefit payment information with respect to amounts transmitted by the Trustee to the applicable taxing authorities as soon as practicable after the end of each calendar year.

ARTICLE VII

Miscellaneous

VII-1. Disagreement as to Acts. If there is a disagreement between the Trustee and anyone as to any act or transaction reported in any accounting, the Trustee shall have the right to have its account settled by a court of competent jurisdiction.

VII-2. Persons Dealing With Trustee. No person dealing with the Trustee shall be required to see to the application of all money paid or property delivered to the Trustee, or to determine whether or not the Trustee is acting pursuant to any authority granted under this Trust Agreement.

VII-3. Evidence. Evidence required of anyone under this Trust Agreement may be by certificate, affidavit, document or other instrument which the person acting in reliance thereon considers pertinent and reliable, and signed, made or presented by the proper party.

VII-4. Waiver of Notice. Any notice required under this Trust Agreement may be waived by the person entitled thereto.

VII-5. Counterparts. This Trust Agreement may be executed in any number of counterparts, each of which shall be deemed an original, and no other counterpart need be produced.

VII-6. Governing Laws. This Agreement shall be construed and administered according to the internal laws of the State of Illinois.

VII-7. Successors, Etc. The provisions of this Agreement shall be binding on the Exchange and the Trustee and their successors and the Plan participants and their respective heirs and legal representatives.

VII-8. Service of Legal Process. If the Trustee receives service of summons, subpoena or other legal process of any court with respect to any action relating to the Plan or this Agreement, it shall, as soon as practicable, inform the Plan Administrator of such service and the Trustee shall promptly provide the Plan Administrator with a copy of the document served.

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ARTICLE VIII

Changes of Trustee

VIII-1. Resignation. The Trustee may resign at any time by giving ninety days' advance written notice to the Exchange.

VIII-2. Removal of Trustee. The Exchange may remove the Trustee by giving thirty days' advance written notice to the Trustee, subject to providing the removed Trustee with satisfactory written evidence of the appointment of a successor Trustee.

VIII-3. Duties of Resigned or Removed Trustee and of Successor Trustee. If the Trustee resigns or is removed, such resigned or removed Trustee shall promptly transfer and deliver the assets of the Trust Fund to the successor Trustee, after reserving such reasonable amount as it shall deem necessary to provide for expenses and any sums chargeable against the Trust Fund for which it may be liable. Within 120 days, the resigned or removed Trustee shall furnish to the Exchange and the successor Trustee an account of the administration of the Trust from the date of the last account. Each successor Trustee shall succeed to the title to the Trust Fund vested in his predecessor without the signing or filing of any further instrument, but any resigned or removed Trustee shall execute all documents and do all acts necessary to vest such title of record in any successor Trustee. Each successor Trustee shall have all the powers, rights and duties conferred by this agreement as if originally named as Trustee. No successor Trustee shall be personally liable for any act or failure to act of a predecessor Trustee.

ARTICLE IX

Amendment and Termination

IX-1. Amendment. This Trust Agreement and the Trust created hereby may be amended by the Exchange at any time, provided that no amendment shall materially change the rights, duties and responsibilities of the Trustee without its consent, and further provided that no amendment shall conflict with the terms of the Plan or shall make the Trust revocable.

IX-2. Termination Upon Satisfaction of Plan Liabilities. Except as provided in paragraph IX-3, the Trust shall not terminate until the date on which all Plan participants and their beneficiaries are no longer entitled to any benefit payments pursuant to the terms of the Plan. Upon satisfaction of all Plan benefit liabilities this Trust may be terminated by the Exchange and the Trustee shall, subject to the Trustee's reserving such reasonable amount as it shall deem necessary to provide for

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expenses and any sums chargeable against the Trust Fund, distribute any assets remaining in the Trust to the Exchange.

IX-3. Termination With Consent of Participants. With the written consent of a Participant, the Trust may be terminated as applied to such Participant and Trust assets equal in value to the amount credited to such Participant's account under the Plan shall be distributed to the Exchange or otherwise disposed of as directed by the Exchange.

IN WITNESS WHEREOF, the Exchange has caused these presents to be signed by its duly authorized officer and its corporate seal to be hereunto affixed, and the Trustee has set his hand and seal, the day and year first above written.

CHICAGO MERCANTILE EXCHANGE

                                   By /s/ Gerald Beyer
                                      --------------------------------

                                   Its Exec V.P. & CFO
                                       -------------------------------
ATTEST:

By /s/
  ------------------------------

  Its VP & Controller
      --------------------------


                                   /s/ William J. Brodsky
                                   ----------------------------------
                                   As Trustee as Aforesaid

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FIRST AMENDMENT TO
CHICAGO MERCANTILE EXCHANGE
SUPPLEMENTAL EXECUTIVE RETIREMENT TRUST

WHEREAS, the Chicago Mercantile Exchange, an Illinois not-for-profit corporation (the "Exchange"), has established the Chicago Mercantile Exchange Supplemental Executive Retirement Trust (the "Trust"); and

WHEREAS, amendment of the Trust is now considered desirable so that the amounts held pursuant to the terms of the Trust may include amounts maintained in connection with any of the nonqualified deferred compensation plans and agreements of the Exchange, and not just the Chicago Mercantile Exchange Supplemental Executive Retirement Plan;

NOW, THEREFORE, pursuant to the amending power reserved to the Exchange in paragraph IX-1 of the Trust, and with the consent of William J. Brodsky, as trustee of the Trust (the "Trustee"), the Exchange and the Trustee hereby amend the Trust, effective as of September 7, 1993, by adding the following paragraph I-6 to the Trust immediately following paragraph I-5 thereof:

"I-6. Other Plans. Amounts contributed by the Exchange to the Trustee (as provided in paragraph II-2) and held under the terms of this Trust may include, in addition to those amounts contributed and maintained in connection with the Plan, amounts related to one or more other non- qualified deferred compensation plans or agreements of the Exchange (the 'Other Plans'). At the time of any contribution to the Trust or the payment of any benefit from the Trust (as provided in paragraph III-2), the Exchange or the Plan Administrator, as applicable, shall specify to the Trustee the Plan or Other Plan to which such contribution or distribution relates. The Trustee shall separately account for the assets of the Trust Fund attributable to the Plan and each Other Plan. Where the context admits, references herein to the Plan shall also mean any one or all of the Other Plans."

IN WITNESS WHEREOF, the Exchange has caused this amendment to be signed by its duly authorized officer and its corporate


seal to be hereunto affixed, and the Trustee has set his hand and seal, this 7th day of September, 1993.

CHICAGO MERCANTILE EXCHANGE

                                     By  /s/ Gerald Beyer
                                        -------------------------------

                                        Its  Exec. V.P. & CFO
                                            ---------------------------

ATTEST:

By  /s/
   ------------------------------

   Its  VP & Controller                   /s/ William J. Brodsky
       --------------------------        ------------------------------

                                         As Trustee as Aforesaid


Exhibit 10.6 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

AGREEMENT

THIS AGREEMENT, made and entered into this 21st day of March, 1997, by and between THE CHICAGO MERCANTILE EXCHANGE ("Employer"), an Illinois not for profit corporation, having its principal place of business at 30 South Wacker Drive, Chicago, Illinois, and T. ERIC KILCOLLIN ("Employee").

R E C I T A L S:

WHEREAS, Employee has been appointed president and chief executive officer from his position as executive vice president of the Employer; and

WHEREAS, Employer wishes to retain the services of Employee in the capacity of president and chief executive officer upon the terms and conditions hereinafter set forth;

NOW, THEREFORE, in consideration of the mutual promises contained herein, the parties mutually agree as follows:

1. Employment. Subject to the terms of this Agreement, Employer hereby agrees to employ Employee during the Agreement Term as president and chief executive officer and Employee hereby accepts such employment. The duties of Employee as president and chief executive officer shall include, but not be limited to, the performance of all duties associated with the management and operation of Employer, including the execution of all policies formulated by its Board of Governors, the selection and hiring of personnel for the various divisions and departments, the training and establishing of duties and responsibilities of supervisory personnel and improvements in organization, accounting procedures and financial policy for Employer. Employee shall devote his full time, ability and attention to the business of Employer during the Agreement Term, subject to the direction of the Board of Governors.


Notwithstanding anything to the contrary contained herein, nothing in the Agreement shall preclude Employee from participating in the affairs of any governmental, educational or other charitable institution, engaging in professional speaking and writing activities, engaging in teaching and lecture activities (including without limitation teaching activities at the University of Chicago), and serving as a member of the board of directors of a publicly held corporation, as long as the Board of Governors does not determine that such activities interfere with or diminish Employee's obligations under the Agreement. Employee shall be entitled to retain all fees, royalties and other compensation derived from such activities, in addition to the compensation and other benefits payable to him under the Agreement.

2. Agreement Term. Employee shall be employed hereunder for a term ("Agreement Term") commencing on February 1, 1997 and expiring on March 31, 2000, unless sooner terminated as herein provided. Unless renewed by the mutual written agreement of the parties, the Agreement will automatically terminate upon the expiration of the Agreement Term. Employer will give Employee written notice of its intention to renew or not to renew or to renegotiate the terms of the Agreement at least 60 days prior to expiration. In the absence of renewal, upon expiration of the Agreement Term, Employee shall be an employee of the Employer working without a contract.

3. Compensation.

(a) Annual Base Salary. During the Agreement Term, Employee shall receive an annual Base Salary of Five Hundred and Fifty Thousand Dollars ($550,000), payable in regular installments consistent with the payment of compensation to other executive officers of Employer. Employer shall annually review the Base Salary and may, at its sole discretion, increase the level from the level then in effect.

2

(b) Bonus. In addition to the annual Base Salary, Employee may be entitled to an annual bonus for each calendar year ending during the Agreement Term to reflect the value of Employee's services during such calendar year. Employee's bonus shall not be considered as part of the staff bonus program of Employer, but shall be separately determined by the Employer. The bonus for each such calendar year is payable between the first and tenth day after the close of such calendar year.

(c) Business Expenses. Employer agrees to pay directly, or promptly reimburse Employee for, all reasonable expenses incurred in furtherance of or in connection with the transaction of the business of Employer hereunder, subject, however, to accounting by Employee and approval by Employer. Employer will advance to Employee an amount equal to the initiation fees at one country club selected and joined by Employee in which membership is necessary or useful to the performance of Employee's duties hereunder. The amount of such advance shall constitute a loan from Employer to Employee that shall be payable by Employee to Employer in a lump sum, without interest thereon, within thirty (30) days following the date of termination of Employee's employment with Employer.

Employer will pay or reimburse Employee for the following:

1. all reasonable annual dues and membership expenses in the aforementioned country club and all reasonable expenses incurred in furtherance of or in connection with the transaction of the business of Employer hereunder at such country club; and

2. all reasonable initiation fees, annual dues and membership expenses in such civic and lunch clubs selected by Employee as are necessary or useful to the performance of Employee's duties hereunder and all reasonable expenses incurred in furtherance of or in

3

connection with the transaction of the business of Employer hereunder at such civic and lunch clubs.

All of the aforementioned amounts subject to reimbursement by Employer to Employee shall be subject to an accounting by Employee and approval by Employer. It is also understood that it will be necessary for Employee to have the use of an automobile to perform his duties hereunder and Employer will provide an automobile and reimburse Employee for all expenses incurred in connection with the business use of such automobile. At Employee's option he shall be reimbursed by Employer for all taxicab and other commuting expenses related to travel by Employee between his personal residence and the principal offices of Employer, in lieu of being provided with the use of an automobile by Employer.

(d) Professional Services. Employee shall be entitled to reimbursement for his expenses for professional services including legal, accounting, investment advice, management training, etc., relating to his negotiations for employment and continued employment, performance of duties and reporting obligations hereunder, management of personal finances, and tax advice, planning and payment. Employee shall be reimbursed under this paragraph at the rate of Twelve Thousand Five Hundred Dollars ($12,500) for each calendar year ending during the Agreement Term.

4. Insurance. Employee shall be included under any group medical, dental, vision, life, accidental death and dismemberment, disability and other insurance programs from time to time during the Agreement Term offered by Employer to its executive officers or staff employees.

5. Vacation and Fringe Benefits. Employee shall be entitled to a reasonable amount of annual vacation as commonly granted to other executive officers. Employee shall be permitted

4

to participate in and take advantage of any other fringe benefits offered from time to time during the Agreement Term by Employer to its executive officers or staff employees.

6. Pension and Retirement Benefits.

(a) Employee shall be entitled to participate in any pension, profit sharing, savings, cash balance, or other retirement plan, other than the Chicago Mercantile Exchange Supplemental Executive Retirement Plan, ("Plan") from time to time during the Agreement Term maintained by Employer in accordance with the terms and conditions provided therein. In the event Employee's employment with Employer, whether before, at, or after the expiration of the Agreement Term, terminates prior to Employee's full vesting of retirement benefits under any Plan, and provided Employee's employment is not terminated for "cause" as defined in paragraph (d) of Section 8 hereof, Employee's rights thereunder shall not be subject to any forfeiture but shall be treated as if fully vested under such Plan and Employee shall receive retirement benefits from either such Plan, Employer or both, based upon such Plan's then current benefit formula limited to Employee's actual service with Employer and his average earnings at the date of termination. Employee will be credited with his aggregate period of employment with Employer, both before his initial termination of employment in June, 1994, and from and after his date of reemployment in March, 1996, for all purposes of each Plan; provided that such employment shall not be credited in a manner that is inconsistent with the provisions of any Plan that is intended to meet the tax qualification requirements of Section 401(a) of the Internal Revenue Code of 1986, as amended ("Code"); and provided further that the amount of any benefit payable to Employee under any such Plan shall be reduced to reflect the amount of any benefit previously paid to him under such Plan to the extent necessary to prevent duplication of benefits. Notwithstanding the foregoing (except for

5

the aforementioned protection from forfeiture and provision for credit of employment), Employee shall not be entitled to any greater benefit under any Plan than any other employee who has been employed for an equivalent period of service.

(b) During the Agreement Term, Employee shall be eligible to participate in the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan, or any amended or successor plan, in accordance with its terms, and any bonus payable to Employee pursuant to paragraph (b) of Section 3 of the Agreement shall be included as compensation for purposes of determining the "Deferral Elections" and the "Cash Balance Plan Make-Whole Credit" under the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan, or any amended or successor plan. In no event will any future amendment to, or termination of, the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan, or any amended or successor plan adversely affect the contributions made or to be made for, and the benefits of, Employee determined pursuant to the terms of such Plan as of the date hereof.

All contributions made for the benefit of Employee pursuant to this paragraph (b), at any time during the Agreement Term, shall be contributed by Employer to a Trust Agreement to be established by Employer no later than December 31, 1997. Designated officers of Employer shall be the trustees of such Trust Agreement and shall have investment authority with respect to Trust assets; provided that the trustees shall give consideration to investment guidelines made available by Employee from time to time. Trust assets will be subject to creditors of Employer, but will otherwise be available only to pay benefits to Employee and his beneficiaries pursuant to the terms of this paragraph (b) and the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan or any amended or successor plan. Contributions to the Trust Agreement

6

shall be made at the same time or times that contributions are made for the benefit of Employee under the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan.

(c) (i) Distributions. Upon termination of Employee's employment with Employer for any reason, Employer shall direct the trustees of the Trust Agreement referred to in paragraph (b) next above to distribute the then assets of the Trust to the Employee (or to his beneficiaries in the event of his death), such payment to be made or commenced within 60 days of such termination of employment. Provided that Employer has contributed to such Trust Agreement the full amount required under paragraph (b) of this Section, and that the Trust assets have been used for no other purpose, the payment to Employee (or his beneficiaries) under this paragraph (c) shall be in full satisfaction of Employer's obligations to Employee with respect to the amounts payable under paragraph (b). If Employer fails to make any such contribution, or if Trust assets are used for any other purpose, Employer shall make or commence payment to Employee (or his beneficiaries) out of its general assets, within 60 days of such termination of employment, of the amount by which the payment to Employee (or his beneficiaries) under the first sentence of this paragraph (c) has been reduced by reason of such failure to contribute or use of Trust assets.

(ii) Amounts payable to Employee (or his beneficiaries) upon termination of Employee's employment with Employer pursuant to paragraph (b) of this section shall be paid in any of the following ways as Employee shall direct by written instrument delivered to Employer at least 90 days prior to such termination of employment (of if Employee shall have failed to direct a method of payment prior to his death as his beneficiary shall direct by written instrument delivered to Employer within 90 days after the date of death of Employee):

(A) in a single sum;

7

(B) in installments, payable in substantially equal amounts, continuing over a period designated by Employee (or his beneficiary), that shall not exceed 10 years; or

(C) in installments applicable to a portion of such amounts designated by Employee (or his beneficiary) in substantially equal amounts continuing over a period designated by Employee (or his beneficiary) that shall not exceed 10 years, with the balance of such amounts payable in a single sum to Employee (or his beneficiary), within 60 days after the end of such designated installment period; or

(D) Any combination of the foregoing methods of payment. If the direction of a method of payment is not made by written notice delivered to Employer by Employee (or his beneficiary), within the time period set forth above, payment will be made in a single sum within 120 days of termination of Employee's employment with Employer.

(d) All amounts held for the benefit of Employee (whether or not vested) under the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan, the Chicago Mercantile Exchange Supplemental Executive Retirement Plan, and the related Chicago Mercantile Exchange Supplemental Executive Retirement Trust as of December 31, 1997, shall be contributed by Employer, or the trustee of such Trust, to the Trust Agreement established for Employee pursuant to the provisions of paragraph (b) of this Section, in a single sum no later than January 31, 1998. Employer shall cause the trustee of the Chicago Mercantile Exchange Supplemental Executive Retirement Trust to make such contributions pursuant to the terms of this paragraph (d).

8

(e) Enhanced Pension Benefit. (i) Employee shall be entitled to an annual Enhanced Pension Benefit for each calendar year ending during the Agreement Term, in an amount equal to:

(A) Employee's annual Base Salary for the applicable calendar year multiplied by ten percent (10%) ("Enhanced Pension Payment"); plus

(B) A Gross-Up Payment. A Gross-Up Payment shall mean an additional cash amount payable to Employee in connection with the payment of the Enhanced Pension Payment, such that the net amount retained with respect to Employee, after reduction for any federal, state and local income or employment tax (at the highest applicable marginal rate of taxation for the applicable calendar year) on the Enhanced Pension Payment and the Gross-Up Payment, shall be equal to the sum of (1) the amount of the Enhanced Pension Payment, and (2) an amount equal to the product of any deductions disallowed for federal, state or local income tax purposes because of the inclusion of the Enhanced Pension Payment and the Gross-Up Payment in Employee's income for income tax purposes, multiplied by the highest applicable marginal rate of federal, state or local income taxation for the applicable calendar year in which the Enhanced Pension Payment and the Gross-Up Payment are to be paid.

(ii) The Enhanced Pension Payment referred to in subparagraph (i) above for each calendar year ending during the Agreement Term and the Gross-Up Payment for such calendar year shall be paid by Employer directly to Employee as soon as practicable after the end of such calendar year and in any event no later than the January 31 next following the end of such calendar year.

9

7. Disability.

(a) In the event Employee is permanently disabled, as hereinafter defined, for a continuous period of 6 months, Employer may terminate Employee's employment under the Agreement upon written notice to Employee. In such event, Employee's Base Salary shall continue as provided in paragraph (b) of Section 8.

(b) Employee, for the purposes hereof, shall be deemed to be "permanently disabled" when, as a result of bodily injury or disease or mental disorder, he is so disabled that he is prevented from performing the principal duties of his employment with or without reasonable accommodation.

8. Termination.

(a) The employment of Employee hereunder shall not otherwise be terminated by Employer, nor shall his authority be in any way modified or diminished during the Agreement Term, however, Employer may terminate the employment of Employee under the Agreement in the event that Employee shall die, or pursuant to Section 7 above if Employee becomes permanently disabled, or for "cause" as hereinafter defined in paragraph (d) of this section.

(b) In the event of termination of Employee's employment hereunder due to death or his becoming permanently disabled, Employer shall for a period of 6 months following such termination, continue to pay Employee's Base Salary as then in effect to Employee (or to his beneficiary in the event of his death).

(c) If Employee's employment hereunder is terminated by Employer for cause, or upon expiration of the Agreement Term, Employer shall pay to Employee, as soon as practicable after such termination or expiration, any and all amounts of Base Salary, bonus that has been

10

awarded, Enhanced Pension Benefit and accrued but unused vacation pay, that have been earned but not paid to Employee as of the date of such termination or expiration.

(d) For purposes of this Section, "cause" shall be deemed to exist if, and only if:

(i) Employee shall engage, during the performance of his duties hereunder, in acts or omissions constituting dishonesty, intentional breach of fiduciary obligation or intentional wrongdoing or malfeasance;

(ii) Employee shall intentionally disobey or disregard a lawful and proper direction of the Board of Governors or Employer; or

(iii) Employee shall materially breach the Agreement and such breach by its nature, is incapable of being cured, or such breach remains uncured for more than 30 days following receipt by Employee of written notice from Employer specifying the nature of the breach and demanding the cure thereof. For purposes of this clause (iii) a material breach of the Agreement that involves inattention by Employee to his duties under the Agreement shall be deemed a breach capable of cure.

Without limiting the generality of the foregoing, the following shall not constitute cause for the termination of the employment of Employee or the modification or diminution of any of his authority hereunder.

(i) any personal or policy disagreement between Employee and Employer or any member of Employer or its Board of Governors, or

(ii) any action taken by Employee in connection with his duties hereunder or any failure to act, if Employee acted or failed to act in good faith and in a manner he reasonably believed

11

to be in and not opposed to the best interest of Employer and had no reasonable cause to believe his conduct was unlawful.

Notwithstanding anything herein to the contrary, in the event Employer shall terminate the employment of Employee for cause hereunder, Employer shall give at least 30 days prior written notice to Employee specifying in detail the reason or reasons for Employee's termination.

(e) The Agreement may be terminated by Employee at any time and for any reason by the giving of at least 60 days advance written notice of same to Employer. In the event Employee terminates the Agreement pursuant to this paragraph with less than 60 days advance written notice of same, the parties acknowledge that Employer will be damaged thereby, but that such damages will be difficult to calculate. Accordingly, Employee will promptly pay to Employer, or allow set off against any monies it may then owe to Employee, as full liquidated damages, a sum equal to Employee's Annual Base Salary then in effect, computed daily, for each day his notice of termination under this paragraph is less than 60 days.

(f) If Employee dies during the Agreement Term, or thereafter but prior to receipt of any amounts to which Employee is entitled hereunder, Employer agrees to pay all amounts payable to or with respect to Employee hereunder that were not paid as of the date of his death, to his beneficiary last designated by written instrument delivered to Employer prior to the date of death. If no such designated beneficiary shall survive Employee, such amounts shall be paid to Employee's surviving spouse, or if none to his lawful descendants per stirpes then living, or if none shall survive him to the legal representative of his estate, or if none is appointed within 6 months of the date of his death, to his heirs at law under the laws of the state in which he is domiciled at the date of his death. Any death benefits payable under this paragraph (f) are in addition to any other benefits due

12

to Employee or his beneficiaries or dependents from Employer, including, but not limited to, benefits under any Plan referred to in Section 6.

9. Nondisclosure of Confidential Information.

(a) Employee acknowledges that Employer may disclose certain confidential information to Employee during the Agreement Term to enable him to perform his duties hereunder. Employee hereby covenants and agrees that, subject to paragraph (b) of this Section, he will not, without the prior written consent of Employer, during the Agreement Term (except in connection with the proper performance of his duties hereunder) or at any time thereafter, disclose or permit to be disclosed to any third party by any method whatsoever any of the confidential information of Employer. For purposes of the Agreement, "confidential information" shall include, but not be limited to, any and all records, notes, memoranda, data, writings, research, personnel information, customer information, clearing members' information, Employer's financial information and plans in the possession or control of Employer that have not been published or disclosed to the general public or the commodities futures industry. If Employee fails to comply with any provisions of this Section, which failure (i) is inadvertent or unintentional, or (ii) occurs notwithstanding Employee's good faith effort to comply with Section, or (iii) does not, and is not likely to, result in significant loss to Employer, then such failure shall not constitute a violation of any provision, covenant or agreement of this Section, for any purposes of the Agreement.

(b) Section 9(a) shall not be applicable if and to the extent Employee is required to testify in a legislative, judicial or regulatory proceeding pursuant to an order of Congress, any state or local legislature, a judge, or an administrative law judge issued after Employee and his legal counsel urge that the aforementioned confidentiality be preserved, or if any such confidential

13

information is required to be disclosed by Employee by any law, regulation or order of any court, regulatory commission, department or agency.

10. Indemnity. Employer shall indemnify, protect, defend and save Employee harmless from and against any threatened, pending or completed action, suit or proceeding whether civil, criminal, administrative or investigative, in which Employee is made a party by reason of the fact that Employee is an officer, employee or agent of Employer, or any judgment, amount paid in settlement (with the consent of Employer), fine, loss, expense, cost, damage and reasonable attorney's fees incurred by reason of the fact that Employee is an officer, employee or agent of Employer, provided, however, that Employee acted in good faith and in a manner he reasonably believed to be in the best interests of Employer and had no reasonable cause to believe his conduct was unlawful. Employer, at its expense, shall have the right to purchase and maintain insurance or fidelity bonds on behalf of Employee against any liability asserted against him and incurred by him in his capacity as an officer, employee or agent of Employer.

11. Employee's Right Unsecured. Except as otherwise provided in Section 6, all rights and benefits of Employee and his spouse or other beneficiary under the Agreement shall at all times be entirely unfunded and no provision shall at any time be made with respect to segregating any assets of Employer for payment of such benefits. Except as otherwise provided in Section 6, neither Employee nor his spouse or designated beneficiary shall have any interest in or rights against any specific assets of Employer, and Employee and his spouse or other designated beneficiary shall have only the rights of a general unsecured creditor of Employer.

12. Spendthrift Provision. No interest of Employee or his spouse or other designated beneficiary, or right to receive distribution, under the Agreement, shall be subject in any manner to

14

sale, transfer, assignment, pledge, attachment, garnishment or other alienation or encumbrance of any kind; nor may such interest or right to receive a distribution be taken, voluntarily or involuntarily, for the satisfaction of the obligations or debts of, or other claims against, Employee or his spouse or other beneficiary, including claims for alimony, support, separate maintenance and claims in bankruptcy proceedings.

13. Arbitration; Equitable Remedies. Any controversy or claim arising out of or relating to the Agreement or the validity, interpretation, enforceability or breach thereof, which is not settled by agreement of the parties, shall be settled by arbitration conducted in the City of Chicago, in accordance with the Labor Rules and Procedures of the American Arbitration Association, and judgment upon the award rendered in such arbitration may be entered in any court having jurisdiction. The arbitration shall be conducted before a single arbitrator selected by the parties. In the event the parties cannot agree on an arbitrator, then the Association will supply both parties with a list of 7 names. The parties will alternatively strike one name until only one remains. First choice will be determined by a coin toss, the winning party having the option of striking first. All expenses of arbitration shall be borne equally by the parties, except for attorney's fees which shall be borne entirely by each party. The arbitrator shall have no power to amend, alter, add to or delete from the Agreement.

Employee acknowledges that Employer would be irreparably injured by a violation of Section 9 and he agrees that Employer, in addition to any other remedies available to it for such breach or threatened breach, shall be entitled to a preliminary injunction, temporary restraining order, or other equivalent relief, restraining Employee from any actual or threatened breach of Section 9 pending and in aid of arbitration of the dispute. If a bond is required to be posted in order for the

15

Employer to secure an injunction or other equitable remedy, the parties agree that such bond need not be more than a nominal sum.

14. Return of Property. Upon his last day of active work, Employee hereby agrees to immediately turn over to Employer any keys, credit cards, passes, and all notes, memoranda, records, documents, computer disks, and all other information, no matter how produced or reproduced, kept by Employee or in his possession or control, used in or pertaining to the business of Employer, it being hereby acknowledged that all of said items are the sole and exclusive property of Employer.

15. Defense of Claims. During the period of his employment by Employer, and for periods after the termination of his employment, Employee shall reasonably cooperate with Employer at its request in the defense or prosecution of any claim that may be made by or against Employer. Such cooperation shall include, without limitation, serving as a witness at trial or hearing, being deposed, and preparation for same. For the period after Employee terminates his employment with Employer, Employer shall reimburse Employee for all reasonable expenses in connection therewith, including travel expenses, and shall compensate him at a daily rate equal to his annual Base Salary on the date his employment with Employer terminates, divided by 260, with days used for preparation, travel and other related matters being included for purposes of determining the compensation due to Employee. Less than full days shall be paid for by the hour, determined by dividing the daily rate by eight. To the extent reasonably practicable, Employer shall provide Employee with notice at least 10 days prior to the date on which any such travel is required.

16. Waiver of Breach. No waiver of either party hereto of a breach of any provision of the Agreement by the other party, or of compliance with any condition or provision of the Agreement to be performed by such other party, will operate or be construed as a waiver of any

16

subsequent breach by such other party or any similar or dissimilar provisions and conditions at the same or any prior or subsequent time. The failure of either party hereto to take any action by reason of such breach will not deprive such party of the right to take action at any time while such breach continues.

17. Entire Agreement. The Agreement constitutes the entire agreement between the parties concerning the subject matter hereof and supersedes all prior and contemporaneous agreements, if any, between the parties relating to the subject matter hereof.

18. Counterparts. The Agreement may be signed in multiple counterparts, each of which shall be deemed to be an original for all purposes.

19. Acknowledgment by Employee. Employee represents that he is knowledgeable and sophisticated as to business matters, including the subject matter of the Agreement, that he has read the Agreement and that he understands its terms. Employee acknowledges that, prior to assenting to the terms of the Agreement, he has been given reasonable time to review it, to consult with counsel of his choice, and to negotiate at arm's length with Employer as to the contents. Employee and Employer agree that the language used in the Agreement is the language chosen by the parties to express their mutual intent, and that no rule of strict construction is to be applied against either party hereto.

20. Assignment, Survival of Agreement.

(a) The Agreement is personal to Employee and shall not be assigned by him.

(b) Employer may assign the Agreement without the consent of Employee to any other entity who in connection with such assignment acquires all or substantially all of the assets of Employer or into or with which Employer is merged or consolidated. In the event such acquisition,

17

merger or consolidation involves a change in control of Employer, Employee may terminate the Agreement upon 30 days prior written notice to Employer. In the event of a merger, sale, reorganization or other change in control of Employer, the Agreement shall be binding upon and inure to the benefit of any successor to Employer.

(c) Except as otherwise expressly provided in the Agreement, the rights and obligations of the parties to the Agreement shall survive the termination of Employee's employment with Employer.

21. Notice. All notices and communications required hereunder shall be in writing and shall be deemed to have been given on the day of delivery if personally delivered, or 2 days after mailing if mailed, postage prepaid, certified or registered, return receipt requested, to the following addresses:

If to Employee:           T. Eric Kilcollin
                          23 E. Scott Street
                          Chicago, Illinois 60610

If to Employer:           Chicago Mercantile Exchange
                          30 South Wacker Drive
                          Chicago, Illinois 60606
                          Attention: Gerald D. Beyer

or to such other addresses as the respective parties may hereafter designate.

22. Severability. If any clause, phrase, provision or portion of the Agreement, or the application thereof to any person or circumstance, shall be invalid or unenforceable under any applicable law, such event shall not affect or render invalid or unenforceable the remainder of the Agreement, and shall not affect the application of any clause, provision or portion hereof to other persons or circumstances.

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23. Benefit. The provisions of the Agreement shall be binding upon and inure to the benefit of Employer, its successors and assigns and upon and to Employee, his heirs, personal representatives and successors, including without limitation, the estate of Employee and the executors, administrators or trustees of such estate.

24. Relevant Law: The Agreement shall be construed and enforced in accordance with the laws of the State of Illinois without regard to the conflict of law provisions of any state.

IN WITNESS WHEREOF, the parties hereto have set their hands and seals the day and date first above written.

EMPLOYER:                                  EMPLOYEE:

CHICAGO MERCANTILE EXCHANGE,
an Illinois not for profit
corporation                                /s/ T. Eric Kilcollin
                                           ----------------------
                                           T. Eric Kilcollin

By: /s/ John F. Sandner
    --------------------------
Its: Chairman
     -------------------------

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Exhibit 10.7 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

SEPARATION AGREEMENT AND GENERAL RELEASE

THIS SEPARATION AGREEMENT and GENERAL RELEASE (hereinafter "Agreement") is made and entered into by and between T. ERIC KILCOLLIN (hereinafter "Kilcollin") and THE CHICAGO MERCANTILE EXCHANGE (hereinafter "CME"), an Illinois not-for- profit corporation.

WHEREAS, the parties, have engaged in discussions resulting in an amicable and mutually satisfactory agreement concerning Kilcollin's resignation from his employment and directorship with the CME, and all matters arising out of or relating thereto;

NOW, THEREFORE, in consideration of the mutual covenants and promises set forth below, the parties hereby agree as follows:

1. The Employment Agreement. Kilcollin and the CME are parties to an "Agreement" dated March 21, 1997, with a term extending through March 31, 2000 (hereinafter "Employment Agreement"). Except for the obligations set forth in Paragraphs 8f, 9, 10, 11, 12, 14 and 15 thereof, which shall continue, or except as otherwise expressly provided in this Agreement, the terms and provisions of this Agreement shall supersede the terms and provisions of the Employment Agreement, which is terminated effective March 19, 1999 and shall thereafter be null and void and without further effect. In the event of any conflict or inconsistency between this Agreement and the Employment Agreement, the terms of this Agreement shall take precedence.

2. Kilcollin's Resignation. On January 19, 1999, Kilcollin shall resign his employment and directorship with the CME, said resignation to be effective on Friday, March 19, 1999 (hereinafter "Resignation Date"). During his employment through March 19, 1999, Kilcollin shall


continue to receive all compensation, as well as insurance, vacation, fringe, pension and retirement benefits due to him under and pursuant to the terms of the Employment Agreement, and shall continue to perform his duties and obligations to the CME as set forth in the Employment Agreement; provided, however, that Kilcollin shall be allowed reasonable time to pursue other employment opportunities. A mutually agreed-upon announcement/press release of Kilcollin's resignation to be issued by the CME on or about January 19, 1999, is set forth in Exhibit A, attached hereto and incorporated herein.

3. The Obligations of CME. Upon the Resignation Date, and in consideration of the promises of Kilcollin contained in this Agreement, the CME shall be obligated to Kilcollin as set forth herein. Except as expressly set forth in this Agreement, CME shall have no obligation to Kilcollin of any kind or nature whatsoever.

a. Annual Base Salary. On or before March 19, 1999, the CME shall pay to Kilcollin in a single lump sum, the gross amount of five hundred ninety-one thousand, nine hundred eighty-two dollars and ninety-six cents (591,982.96), less applicable deductions and withholdings for state and federal taxes, which amount is equal to (and in lieu of) Kilcollin's Annual Base Salary of five hundred seventy-two thousand dollars ($572,000) and vacation benefits that would have been paid had Kilcollin's employment continued through March 31, 2000.

b. Health, Dental & Vision Insurance. Through March 31, 2000, Kilcollin and any covered dependents will continue to be covered by the CME's health, dental and vision insurance program in effect for active employees. Effective April 1, 2000, health, dental and vision insurance benefits will be provided to Kilcollin and any covered dependents pursuant

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to the Consolidated Omnibus Budget Reconciliation Act ("COBRA"), as set forth in Section 4980B of the Internal Revenue Code of 1986, as amended, and in Sections 601 through 609 of the Employee Retirement Income Security Act. Kilcollin's contribution and the CME's contribution toward the cost of the foregoing coverages shall be determined and paid as though Kilcollin's employment with the CME continued through March 31, 2000. The foregoing insurance coverages will earlier terminate upon Kilcollin obtaining other employment which offers health insurance coverage and when he first becomes eligible for such coverage. Kilcollin agrees that he will promptly notify the CME upon obtaining such coverage from another employer. Kilcollin shall have no duty to seek or obtain other employment.

c. Life, and Accidental Death & Dismemberment Insurance. Through March 31, 2000, the CME shall, at its discretion, either reimburse Kilcollin for the cost of converting the above-referenced life and accidental death and dismemberment insurance programs in effect on the Resignation Date to individual coverage, or obtaining equivalent coverage individually, or, where applicable, continuing individual coverage already in place. To the extent the payments or reimbursements hereunder, or under Paragraph b next above, constitute taxable income to Kilcollin, the CME shall gross-up the payment to Kilcollin to compensate for same in accordance with the formula contained in Paragraph 6(e)(B) of the Employment Agreement. It is understood and agreed that Kilcollin's coverage under the CME's disability insurance plan will cease as of March 19, 1999 and that the CME has no obligation to provide or pay for other disability coverage. The CME will cooperate with

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Kilcollin (e.g. providing documentation) in his efforts to obtain at his expense individual disability coverage.

d. Business Expenses. On or before March 19, 1999, the CME shall pay to Kilcollin, in a single lump sum, the sum of twelve thousand three hundred seventy five dollars ($12,375.00), which represents all reimbursements which Kilcollin has or may claim with respect to the dues and other costs of club memberships through March 31, 2000. There shall be no reimbursement of Kilcollin for any other business and transportation expenses incurred by him after March 19, 1999. It is further understood and agreed that Kilcollin shall not be entitled to a car allowance, which he has not used, under this Agreement or the Employment Agreement.

e. Professional Services. On or before March 19, 1999, the CME shall, in a single lump sum, reimburse Kilcollin for a total of fifteen thousand six hundred eight dollars ($15,608) for the Professional Services described in Paragraph 3(d) of the Employment Agreement for the period from January 1, 1999 through March 31, 2000.

f. Enhanced Pension Benefits. On or before March 19, 1999, the CME shall, in a single lump sum, pay to Kilcollin, in lieu of the Enhanced Pension Benefit as set forth in Paragraph 6(e) of the Employment Agreement through March 31, 2000, an amount, after gross-up computed in accordance with the formula contained in Paragraph 6(e)(B) of the Employment Agreement, of one hundred twenty seven thousand five hundred seventy two dollars ($127,572). Said payments shall be in full satisfaction of the CME's obligations under Paragraph 6(e) of the Employment Agreement.

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g. Retirement and Deferred Compensation Benefit Plans. It is understood and agreed that Kilcollin's continuous service under all CME retirement and deferred compensation benefit plans shall cease as of his Resignation Date. Kilcollin's interest under said plans shall be treated as if fully vested as of the Resignation Date. In all other respects, Kilcollin's rights and the obligations of the CME pursuant to said plans shall be as determined by the terms of each such plan and applicable law, and as set forth below:

(i) On or before March 19, 1999, amounts payable to Kilcollin with respect to the Chicago Mercantile Exchange Senior Management Supplemental Deferred Savings Plan (the "Supplemental Deferred Savings Plan") and the Chicago Mercantile Exchange Supplemental Executive Retirement Plan shall be distributed to Kilcollin in the single lump sum elected by him in accordance with the terms of said plans.

(ii) On or before March 19, 1999, the CME shall pay to Kilcollin in a single lump sum, the sum of ninety-six thousand, one hundred ninety- eight dollars and nineteen cents ($96,198.19), which represents the present value, after gross-up computed in accordance with the formula contained in Paragraph 6(e)(B) of the Employment Agreement, of the benefits Kilcollin would have received from the CME for the period from March 19, 1999 through March 31, 2000 pursuant to the Pension Plan for Employees of the Chicago Mercantile Exchange, the Chicago Mercantile Exchange Tax Efficient Savings Plan ("TESP") and the Supplemental Deferred Savings Plan had he remained employed through March 31, 2000.

(h) Outplacement. At Kilcollin's election, the CME shall, at its cost, provide Kilcollin with outplacement counseling services. The CME shall select the outplacement

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counseling firm and the services to be provided; provided, however, that the outplacement counseling firm shall be located in the downtown Chicago area and the services provided shall consist, at minimum, of office space, telephone and support services, and counseling provided to Kilcollin for up to twenty four (24) months after the Resignation Date.

(i) Bonus. On or before March 19, 1999, the CME shall pay to Kilcollin, in a single lump sum, a bonus in the gross amount, less applicable deductions and withholdings for state and federal taxes, of either two hundred thousand dollars ($200,000.00), in the event Kilcollin declines outplacement counseling, or one hundred seventy two thousand dollars ($172,000.00), in the event Kilcollin elects to receive outplacement counseling.

4. In the event of Kilcollin's death prior to receipt of all payments to be made to him hereunder, any such remaining payments shall be made to his beneficiary pursuant to Paragraph 8(f) of the Employment Agreement.

5. Mutual General Releases. Except for a claim based upon an alleged breach of this Agreement or an alleged breach of the provisions of the Employment Agreement that are expressly continued pursuant to this Agreement, Kilcollin, for himself and for his estate, heirs, personal representatives, executors, administrators and assigns, hereby releases and forever discharges the CME, any parent, subsidiaries and related and affiliated entities, and each of its and their officers, directors, representatives, agents, employees, related and participating members, insurers, as well as each of its and their respective estates, heirs, personal representatives, executors, administrators, successors and assigns (hereinafter collectively and individually the "CME Releasees"), and the CME Releasees hereby release and forever discharge Kilcollin, his estate, heirs, personal representatives, executors, administrators and assigns, from any and all rights, claims, demands,

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debts, dues, sums of money, accounts, attorneys' fees, complaints, judgments, executions, actions and causes of action of any nature whatsoever, cognizable at law or equity, past, present or future, which either party now has or claims, or might hereafter have or claim, against the other party, based upon or arising out of any matter or thing whatsoever from the date of Kilcollin's initial employment with the CME through the date of this release, including, without limitation, any claim, action or cause of action which was or is related to or arises out to Kilcollin's employment or directorship with the CME, or his separation and/or resignation therefrom, or which is based upon or arises under the Employment Agreement, or any local, state, or federal law dealing with employment discrimination, including without limitation Title VII of the Civil Rights Act of 1964, the Americans with Disabilities Act and the Age Discrimination in Employment Act.

The following provisions are applicable to and made a part of this Agreement and the foregoing general release and waiver:

(i) Kilcollin does not release and waive any right or claim which he may have under the Age Discrimination in Employment Act which arises after the date of execution of this Agreement.

(ii) In exchange for this general release and waiver, Kilcollin hereby acknowledges that he has received separate consideration beyond that which he is otherwise entitled to under the CME policy, the Employment Agreement, or applicable law.

(iii) CME hereby expressly advises Kilcollin to consult with an attorney of his choosing prior to executing this Agreement which contains a general release and waiver.

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(iv) Kilcollin has twenty-one (21) days from the date of presentment to consider whether or not to execute this Agreement. In the event of such execution, Kilcollin's has a further period of seven (7) days from such date in which to revoke said execution, notice of which must be received by the CME within such seven
(7) day period.

6. Non-Disparagement. From and after the date of presentment of this Agreement, both parties represent that they have not and will not, nor will they cause or assist another person to, disparage or make critical, negative, derogatory or defamatory statements about the other to any third party, or make any other statement to a third party which is intended to or would reasonably have the effect of harming the other party to this Agreement. It is understood that Kilcollin's commitment hereunder extends to the CME Releasees. The CME's commitment hereunder extends to its directors, officers, employees and agents. The CME agrees that any reference it provides for Kilcollin to prospective employers of Kilcollin shall be in substantial conformity with Exhibit B, attached hereto and incorporated herein.

7. The Obligations of Kilcollin. In consideration of the promises of the CME contained in this Agreement, and other good and valuable consideration the receipt and sufficiency of which is hereby acknowledged, Kilcollin, in addition to the mutual promises contained in Paragraphs 5 and 6 herein, hereby agrees to abide by the obligations contained in Paragraphs 9, 14 and 15 of the Employment Agreement.

8. Effective Date. The Effective Date of this Agreement shall be the eighth day after Kilcollin's execution of this Agreement without receipt by the CME of a signed statement from Kilcollin revoking such execution. All obligations of the parties contained in this Agreement shall,

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in addition to any other express requirement, be conditioned upon and shall not be effective until the Effective Date of this Agreement as defined in this Paragraph.

9. Arbitration. Any controversy or claim arising out of or relating to this Agreement shall be resolved in accordance with the arbitration procedure contained in Paragraph 13 of the Employment Agreement.

10. Binding Effect. This Agreement shall be binding upon and inure to the benefit of the heirs, assigns, administrators, executors, and legal representatives of Kilcollin and shall be binding upon and inure to the benefit of the CME Releasees. Both parties represent that they have all necessary legal authority to execute this Agreement.

11. Entire Agreement. This instrument constitutes the entire Agreement between the parties. It may not be amended or modified except by a subsequent written instrument signed by all parties hereto.

12. Severability. If any provision, section, subsection or other portion of this Agreement shall be determined by any court of competent jurisdiction to be invalid, illegal or unenforceable in whole or in part, and such determination shall become final, such provision or portion shall be deemed to be severed or limited, but only to the extent required to render the remaining provisions and portions of this Agreement enforceable. This Agreement as thus amended shall be enforced so as to give effect to the intention of the parties insofar as that is possible. In addition, the parties hereby expressly empower a court of competent jurisdiction to modify any term or provision of this Agreement to the extent necessary to comply with existing law and to enforce this Agreement as modified.

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13. Governing Law. This Agreement shall be construed in accordance with the laws of the State of Illinois.

14. Counterparts. This Agreement may be signed in multiple counterparts, each of which shall be deemed to be an original for all purposes.

15. Acknowledgment. Kilcollin acknowledges that he has carefully read and fully understands the terms and provisions of this Separation Agreement and General Release, has been represented in this matter by counsel of his own choosing, and that his execution of this Separation Agreement and General Release is voluntary. The parties agree that the language used in this Agreement is the language chosen by the parties to express their mutual intent, and that no rule of strict construction is to be applied to or against any party hereto.

IN WITNESS WHEREOF, the parties have executed this Agreement on the date(s) set forth below.

THE CHICAGO MERCANTILE
EXCHANGE

By: /s/ Gerald D. Beyer
    -----------------------------------
Title: EVP/COO
      ---------------------------------
Date:   12-30-98
     ----------------------------------


/s/ T. Eric Kilcollin
---------------------------------------
T. Eric Kilcollin

Date: 12/31/98
     ----------------------------------

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Exhibit 10.9 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

EMPLOYMENT AGREEMENT

This Employment Agreement ("Agreement") is entered into by and between the CHICAGO MERCANTILE EXCHANGE ("CME") and FREDERICK ARDITTI ("Arditti") this
27th day of October, 1998.

WHEREAS, the parties desire to enter into this Agreement pertaining to the employment of Arditti by the CME;

NOW, THEREFORE, in consideration of the mutual promises and covenants set forth below, the parties hereby agree as follows:

1. Employment. Subject to the terms of this Agreement, the CME hereby agrees to employ Arditti during the Agreement Term as Senior Executive Vice President-Planning and Development, and Arditti hereby accepts such employment. Arditti shall report directly to the President of the CME. As Senior Executive Vice President-Planning and Development, Arditti shall be responsible for new business development and have overall responsibility for the following departments and/or operations of the CME: Clearing; Marketing; Research and Strategic Planning; and such other duties as may be assigned to him by the President or Board of Directors of the CME. These duties may be changed from time-to-time as determined by the President or Board of Directors of the CME, provided that any such duties shall be consistent with the position of Executive Vice President. During his employment, Arditti agrees to devote his full time, energies and talents to serving as Senior Executive Vice President-Planning and Development of the CME, and to perform his duties faithfully, efficiently and in good faith, subject to the direction of the President and Board of Directors of the CME.


2. Agreement Term. The Agreement Term shall be from July 1, 1998 through June 30, 2001. Unless renewed by the mutual written agreement of the parties, this Agreement will automatically terminate upon the expiration of the Agreement Term. The CME will give Arditti written notice of its intention to renew or not renew or to renegotiate the terms of the Agreement at least sixty (60) days prior to expiration. In the absence of renewal, upon expiration of this Agreement, Arditti shall be an employee of the CME working without a contract.

3. Compensation. During the Agreement Term and while employed by the CME, the CME shall compensate Arditti as follows:

a. Base Salary. Arditti shall be paid an annual base salary of Five Hundred Thousand Dollars ($500,000.00), payable in equal bi-weekly installments. Annual increases, if any, shall be as determined by the CME in accordance with its policies and practices with respect to executive compensation.

b. Benefits. Subject to their terms, Arditti and any of his eligible dependents shall be entitled to participate in all fringe benefits and benefit plans of the CME under the same terms and conditions as are generally applicable to the employees and officers of the CME as those fringe benefits and benefit plans currently exist and/or as they may be amended from time to time during the Agreement Term. Such benefit plans shall specifically include, without limitation, the Chicago Mercantile Exchange Senior Management Supplement Deferred Savings Plan and the Chicago Mercantile Exchange Supplemental Executive Retirement Plan.

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c. Bonus. Subject to its terms, Arditti shall participate in the CME's discretionary bonus program.

4. Termination. Arditti's employment with the CME during the Agreement Term may be terminated only under the following circumstances:

a. Death. Arditti's employment hereunder will terminate upon his death.

b. Disability. If Arditti is disabled, and receiving benefits under the CME's long term disability insurance program, the obligations under this Agreement shall be suspended for the duration of such disability. In the event Arditti returns to the position set forth herein during the term of this Agreement, the provisions of this Agreement shall be reinstated. In the event Arditti returns to work in a different position, or does not return to work at all upon conclusion of his disability, this Agreement shall be deemed terminated.

c. Cause. Arditti's employment hereunder may be immediately terminated by the CME for cause. For purposes of this Agreement, "cause" shall be defined as misconduct, incompetence, failure to perform and/or neglect of duties which is gross or willful, and shall include actions by Arditti which occur outside of the CME which would have a substantial likelihood of bringing significant discredit upon the CME.

d. Termination by Arditti. This Agreement may be terminated by Arditti at any time and for any reason by the giving of at least sixty (60) days advance written notice of same to the CME.

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5. Payments Upon Termination or Expiration.

a. In the event of termination of Arditti pursuant to Paragraphs 4a or 4b of this Agreement, the CME shall for a period of six (6) months following such termination continue Arditti's base salary (or pay same to his estate).

b. In the event of termination of Arditti by the CME pursuant to Paragraph 4(c) of this Agreement, or upon expiration of the Agreement Term, the CME shall continue Arditti's base salary, less applicable deductions for state and federal taxes, and health insurance for a period of three (3) months, and shall pay to Arditti any vacation pay which is accrued but unused as of the date of his termination.

c. In the event of termination by Arditti pursuant to Paragraph 4.d of this Agreement, and provided that such termination does not take place prior to April 1, 2000, the CME shall continue Arditti's base salary for a period one (1) year following such termination. In the event Arditti terminates this Agreement pursuant to Paragraph 4d herein with less than the sixty (60) days advance written notice of same, the parties acknowledge that the CME will be damaged thereby, but that such damages will be difficult to calculate. Accordingly, Arditti will promptly pay to the CME, or allow set off against any monies it may then owe to Arditti, as liquidated damages a sum equal to his base salary, computed daily, for each day his notice of termination under Paragraph 4(d) is less than sixty (60) days.

6. DePaul University. During his employment by the CME, Arditti has been and is on a leave of absence from his position as a tenured member of the faculty at DePaul University in Chicago, Illinois. In order to maintain his tenure, Arditti must declare by March, 1999, whether he intends to return to the faculty of DePaul University. The CME

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agrees to assist Arditti to have the date of such declaration extended from March, 1999 to March, 2000, with the manner and means of such assistance to be determined solely by the CME.

7. Confidentiality. Arditti acknowledges that in his employment he is or will be making use of, acquiring or adding to the CME's Confidential Information which includes (but is not limited to) memoranda and other materials or records of a proprietary nature; technical data, records and policy matters relating to new business development, research, strategy, finance, accounting, marketing, personnel, clearing, management, and operations. Therefore, in order to protect such Confidential Information and to protect other employees who depend on the CME for regular employment, Arditti agrees that he will not during or after the term of his employment in any way utilize any of said Confidential Information, except in connection with his employment by the CME, and he will not copy, reproduce, or take with him the original or any copies of said Confidential Information and he will not disclose any of said Confidential Information to anyone. Further, Arditti agrees to advise any new employer of the terms of this Agreement regarding Confidential Information. These restrictions regarding Confidential Information shall be in addition to those which exist at common law or by statute.

8. Arbitration; Equitable Remedies.

Any controversy or claim arising out of or relating to this Agreement or the validity, interpretation, enforceability or breach thereof, which is not settled by agreement of the parties, shall be settled by arbitration conducted in the City of Chicago, in accordance with the Rules of the American Arbitration Association, and judgment upon the award rendered in

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such arbitration may be entered in any court having jurisdiction. The arbitration shall he conducted before a single arbitrator selected by the parties. In the event the parties cannot agree on an arbitrator, then the Association will supply both parties with a list of seven names. The parties will alternatively strike one name until only one remains. First choice will be determined by a coin toss, the winning party having the option of striking first. All expenses of arbitration shall be borne equally by the parties, except for attorneys' fees which shall be borne entirely by each party. The arbitrator shall have no power to amend, alter, add to or delete from this Agreement.

Arditti acknowledges that the CME would be irreparably injured by a violation of Paragraph 7 and he agrees that the CME, in addition to any other remedies available to it for such breach or threatened breach, shall be entitled to a preliminary injunction, temporary restraining order, or other equivalent relief, restraining Arditti from any actual or threatened breach of Paragraph 7 pending and in aid of arbitration of the dispute. If a bond is required to be posted in order for the CME to secure an injunction or other equitable remedy, the parties agree that such bond need not be more than a nominal sum.

9. Return of Property. Upon his last day of active work, Arditti hereby agrees to immediately turn over to the CME any keys, credit cards, passes, and all notes, memoranda, records, documents, computer disks, and all other information, no matter how produced or reproduced, kept by Arditti or in his possession or control, used in or pertaining to the business of the CME, it being hereby acknowledged that all of said items are the sole and exclusive property of the CME.

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10. Defense of Claims. During the period of his employment by the CME, and for periods after the termination of his employment, Arditti shall reasonably cooperate with the CME at its request in the defense or prosecution of any claim that may be made by or against the CME. Such cooperation shall include, without limitation, serving as a witness at trial or hearing, being deposed, and preparation for same. For the period after Arditti terminates his employment with the CME, the CME shall reimburse Arditti for all reasonable expenses in connection therewith, including travel expenses, and shall compensate him at a daily rate equal to the greater of his then current annual base salary or his annual base salary on the date his employment with the CME terminates, divided by 260, with days used for preparation, travel and other related matters being included for purposes of determining the compensation due to Arditti. Less than full days shall be paid for by the hour, determined by dividing the daily rate by eight. To the extent reasonably practicable, the CME shall provide Arditti with notice at least ten days prior to the date on which any such travel is required.

11. Nonalienation. The interests of Arditti under this Agreement are not subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment, or garnishment by creditors of Arditti or Arditti's beneficiaries.

12. Amendment. This Agreement may be amended or cancelled only by the subsequent mutual written agreement of the parties.

13. Applicable Law. The provisions of this Agreement shall be construed in accordance with the laws of the State of Illinois, without regard to the conflict of law provisions of any state.

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14. Waiver of Breach. No waiver of any party hereto of a breach of any provision of this Agreement by any other party, or of compliance with any condition or provision of this Agreement to be performed by such other party, will operate or be construed as a waiver of any subsequent breach by such other party or any similar or dissimilar provisions and conditions at the same or any prior or subsequent time. The failure of any party hereto to take any action by reason of such breach will not deprive such party of the right to take action at any time while such breach continues.

15. Notices. Notices and all other communications provided for in this Agreement shall be in writing and shall be delivered personally or sent by registered or certified mail, return receipt requested, postage prepaid, or sent by facsimile or prepaid overnight courier to the parties at, respectively, the business address of the CME and the home address of Arditti (or to Arditti at the business address of the CME if Arditti is employed there at the time of such notice). Such notices and other communications shall be deemed given:

a. in the case of delivery by overnight service with guaranteed next day delivery, the next day or the day designated for delivery;

b. in the case of certified or registered U.S. mail, five days after deposit in the U.S. mail; or

c. in the case of facsimile, the date upon which the transmitting party received confirmation of receipt by facsimile, telephone or otherwise; provided, however, that in no event shall any such communications be deemed to be given later than the date they are actually received.

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16. Severability. If any provision, section, subsection or other portion of this Agreement shall be determined by any court of competent jurisdiction to be invalid, illegal or unenforceable in whole or in part, and such determination shall become final, such provision or portion shall be deemed to be severed or limited, but only to the extent required to render the remaining provisions and portions of this Agreement enforceable. This Agreement as thus amended shall be enforced so as to give effect to the intention of the parties insofar as that is possible. In addition, the parties hereby expressly empower a court of competent jurisdiction to modify any term or provision of this Agreement to the extent necessary to comply with existing law and to enforce this Agreement as modified.

17. Survival of Agreement; Successors. Except as otherwise expressly provided in this Agreement, the rights and obligations of the parties to this Agreement shall survive the termination of Arditti's employment with the CME. In the event of a merger, sale, reorganization or other change of control, this Agreement shall be binding upon and inure to the benefit of any successor of the CME.

18. Entire Agreement. This Agreement constitutes the entire agreement between the parties concerning the subject matter hereof and supersedes all prior and contemporaneous agreements, if any, between the parties relating to the subject matter hereof.

19. Counterparts. This Agreement may be signed in multiple counterparts, each of which shall be deemed to be an original for all purposes.

20. Acknowledgment by Arditti. Arditti represents that he is knowledgeable and sophisticated as to business matters, including the subject matter of this Agreement, that he has read this Agreement and that he understands its terms. Arditti acknowledges that, prior to

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assenting to the terms of this Agreement, he has been given a reasonable time to review it, to consult with counsel of his choice, and to negotiate at arm's- length with the CME as to the contents. Arditti and the CME agree that the language used in this Agreement is the language chosen by the parties to express their mutual intent, and that no rule of strict construction is to be applied against any party hereto.

IN WITNESS WHEREOF, the parties have executed this Agreement on the date(s) set forth below.

CHICAGO MERCANTILE EXCHANGE

By  /s/ Gerald D. Beyer
   ---------------------------------
Title  Executive Vice President
      ------------------------------
Date  10-27-98
     -------------------------------


/s/ Frederick Arditti
------------------------------------
Frederick Arditti

Date 10-27-98

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FIRST AMENDMENT TO EMPLOYMENT AGREEMENT

Reference is hereby made to the Employment Agreement entered into between the CHICAGO MERCANTILE EXCHANGE ("CME") and FREDERICK ARDITTI ("Arditti") on
October 27, 1998 ("Agreement").

The Agreement is hereby amended as follows:

1. 4.d. Termination by Arditti.

Paragraph 4.d. is hereby deleted and replaced in its entirety with the following provision:

This Agreement may be terminated by Arditti at any time and for any reason.

2. Subparagraph c of Paragraph 5. Payments Upon Termination or Expiration.

Subparagraph c of Paragraph 5 is hereby deleted and replaced in its entirety with the following provision.

In the event of termination by Arditti pursuant to Paragraph 4.d of this Agreement, and provided that such termination does not take place prior to April 1, 2000, the CME shall continue Arditti's base salary for a period of one
(1) year following such termination. In addition, Arditti will receive at the time of such termination, a lump sum payment, in cash, equal to his then-current non-vested amounts in the following plans: Tax Efficient Savings Plan (401K Plan); Pension Plan for Employees of the Chicago Mercantile Exchange; Senior Management Supplemental Deferred Savings Plan; and Supplemental Executive Retirement Plan.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date set forth below.

CHICAGO MERCANTILE EXCHANGE

By:   /s/ Scott Gordon
      ----------------------------
      Scott Gordon, Chairman
Date: January 7, 2000

      /s/ Fred D. Arditti
      ----------------------------
By:   Frederick Arditti
Date: January 7, 2000


SECOND AMENDMENT TO EMPLOYMENT AGREEMENT

Reference is hereby made to the Employment Agreement entered into between the CHICAGO MERCANTILE EXCHANGE ("CME") and FREDERICK ARDITTI ("Arditti") on
October 27, 1998 ("Agreement").

The Agreement is hereby amended as follows:

1. Subparagraph c of Paragraph 5. - Payment Upon Termination or Expiration.

Subparagraph c of Paragraph 5 is hereby deleted and replaced in its entirety with the following provision.

In the event of termination by Arditti pursuant to Paragraph 4.d of this Agreement, and provided that such termination does not take place prior to April 1, 2000, the CME shall:

(i) continue Arditti's base salary for a period of one (1) year following such termination (the "Continuation Period");

(ii) pay Arditti, at the time of such termination, a lump sum payment, in cash, equal to his then-current non-vested amounts in the following plans: Tax Efficient Savings Plan (401K Plan); Pension for Employees of the Chicago Mercantile Exchange; Senior Management Supplemental Deferred Savings Plan; and Supplemental Executive Retirement Plan.

(iii) during, the Continuation Period, provide Arditti and any covered dependents with continued coverage under the CME's health, dental and vision insurance program in effect for active employees; provided, however, that effective at the end of the Continuation Period, health, dental and vision insurance benefits will be provided to Arditti and any covered dependents pursuant to the Consolidated Omnibus Budget Reconciliation Act ("COBRA"), as set forth in Section 4980B of the Internal Revenue Code of 1986, as amended, and in Sections 601 through 609 of the Employee Retirement Income Security Act. Arditti's contribution and the CME's contribution toward the cost of the foregoing coverages shall be determined and paid as though Arditti's employment with the CME continued through the end of the Continuation Period. The foregoing insurance coverages will earlier terminate upon Arditti obtaining other employment which offers comparable health insurance coverage and when he first becomes eligible for such coverage. Arditti agrees that he will promptly notify the CME upon obtaining such coverage from another employer. Arditti shall have no duty to seek or obtain other employment.

(iv) during the Continuation Period, and subject to CME's discretion, either reimburse Arditti for the cost of converting the above- referenced life and accidental death and dismemberment insurance programs in effect on the date of Arditti's termination to individual coverage, or obtaining


equivalent coverage individually, or, where applicable, continuing individual coverage already in place. It is understood and agreed that Arditti's coverage under the CME's disability insurance plan will cease on the date of Arditti's termination and that the CME has no obligation to provide or pay for other disability coverage. The CME will cooperate with Arditti, (e.g., providing documentation) in his efforts to obtain at his expense individual disability coverage.

IN WITNESS WHEREOF, the parties have executed this Agreement as of the date set forth below.

CHICAGO MERCANTILE EXCHANGE

By:   /s/ Scott Gordon
      ----------------------------
      Scott Gordon, Chairman
Date: February 3, 2000

      /s/ Fred D. Arditti
      ----------------------------
By:   Frederick Arditti

Date: February 3, 2000


Exhibit 10.10 Chicago Mercantile Exchange Inc. Registration Statement on From S-4

EMPLOYMENT AGREEMENT

This Employment Agreement ("Agreement") is entered into by and between the CHICAGO MERCANTILE EXCHANGE ("CME") and GERALD D. BEYER ("Beyer") this 10th day
of December, 1999.

WHEREAS, the parties desire to enter into this Agreement pertaining to the employment of Beyer by the CME.

NOW, THEREFORE, in consideration of the mutual promises and covenants set forth below, the parties hereby agree as follows:

1. Employment. Subject to the terms of this Agreement, the CME hereby agrees to employ Beyer during the Agreement Term as Executive Vice President and Chief Operating Officer, and Beyer hereby accepts such employment. Beyer shall report directly to the President of the CME. As Executive Vice President and Chief Operating Officer, Beyer shall have overall responsibility for the following departments and/or operations of the CME: Finance; Administration; Legal; Personnel; Regulatory; Internal Auditing; MIS; and Operations. Beyer shall also assist the President as the President's liaison to the CME staff, and shall perform such other duties as may be assigned to him by the President or Board of Directors of the CME. These duties may be changed from time-to-time as determined by the President or Board of Directors of the CME, provided that any such duties shall be consistent with the position of Executive Vice President and Chief Operating Officer. During his employment, Beyer agrees to devote his full time, energies and talents to serving as Executive Vice President and Chief Operating Officer of


the CME, and to perform his duties faithfully, efficiently and in good faith, subject to the direction of the President and/or Board of Directors of the CME.

2. Agreement Term. The Agreement Term shall be for a term through April 12, 2001. Unless renewed by the mutual written agreement of the parties, this Agreement will automatically terminate upon the expiration of the Agreement Term. The CME will give Beyer written notice of its intention to renew or not renew or to renegotiate the terms of the Agreement at least sixty (60) days prior to expiration. In the absence of renewal, upon expiration of this Agreement, Beyer shall be an employee of the CME working without a contract.

3. Compensation. During the Agreement Term and while employed by the CME, the CME shall compensate Beyer as follows:

a. Base salary. Beyer shall be paid an annual base salary of five hundred twenty two thousand and five hundred ($522,500), payable in equal bi- weekly installments. Annual increases, if any, shall be as determined by the CME in accordance with its policies and practices with respect to executive compensation.

b. Benefits. Subject to their terms, Beyer and any of his eligible dependents shall be entitled to participate in all fringe benefits and benefit plans of the CME under the same terms and conditions as are generally applicable to the employees and officers of the CME as those fringe benefits and benefit plans currently exist and/or as they may be amended from time to time during the Agreement Term.

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c. Bonus. Subject to its terms, Beyer shall participate in the CME's discretionary bonus program.

4. Termination. Beyer's employment with the CME during the Agreement Term may be terminated only under the following circumstances:

a. Death. Beyer's employment hereunder will terminate upon his death.

b. Disability. If Beyer is disabled, and receiving benefits under the CME's long term disability insurance program, the obligations under this Agreement shall be suspended for the duration of such disability. In the event Beyer returns to the position set forth herein during the term of this Agreement, the provisions of this Agreement shall be reinstated. In the event Beyer returns to work in a different position, or does not return to work at all upon conclusion of his disability, this Agreement shall be deemed terminated.

c. Cause. Beyer's employment hereunder may be immediately terminated by the CME for cause. For purposes of this Agreement, "cause" shall be defined as misconduct, incompetence, failure to perform and/or neglect of duties which is gross or willful, and shall include actions by Beyer which occur outside of the CME which would have a substantial likelihood of bringing significant discredit upon the CME.

d. Termination by Beyer. This Agreement may be terminated by Beyer at any time and for any reason by the giving

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of at least sixty (60) days advance written notice of same to the CME.

5. Payments Upon Termination or Expiration.

a. In the event of termination of Beyer pursuant to Paragraphs 4a or 4b of this Agreement, the CME shall for a period of six (6) months following such termination continue Beyer's base salary (or pay same to his estate).

b. In the event of termination of Beyer by the CME pursuant to Paragraph 4(c) of this Agreement, or upon expiration of the Agreement Term, the CME shall pay to Beyer only any accrued, but unused, vacation pay.

c. In the event Beyer terminates this Agreement pursuant to Paragraph 4d herein with less than the sixty (60) days advance written notice of same, the parties acknowledge that the CME will be damaged thereby, but that such damages will be difficult to calculate. Accordingly, Beyer will promptly pay to the CME, or allow set off against any monies it may then owe to Beyer, as liquidated damages a sum equal to his base salary, computed daily, for each day his notice of termination under Paragraph 4(d) is less than sixty (60) days.

6. Confidentiality. Beyer acknowledges that in his employment he is or will be making use of, acquiring or adding to the CME's Confidential Information which includes (but is not limited to) memoranda and other materials or records of a proprietary nature; technical data, records and policy matters relating to new business development, research, strategy,

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finance, accounting, marketing, personnel, clearing, management, and operations. Therefore, in order to protect such Confidential Information and to protect other employees who depend on the CME for regular employment, Beyer agrees that he will not during or after the term of his employment in any way utilize any of said Confidential Information, except in connection with his employment by the CME, and he will not copy, reproduce, or take with him the original or any copies of said Confidential Information and he will not disclose any of said Confidential Information to anyone. Further, Beyer agrees to advise any new employer of the terms of this Agreement regarding Confidential information. These restrictions regarding Confidential Information shall be in addition to those which exist at common law or by statute.

7. Arbitration; Equitable Remedies.

Any controversy or claim arising out of or relating to this Agreement or the validity, interpretation, enforceability or breach thereof, which is not settled by agreement of the parties, shall be settled by arbitration conducted in the City of Chicago, in accordance with the Rules of the American Arbitration Association, and judgment upon the award rendered in such arbitration may be entered in any court having jurisdiction. The arbitration shall be conducted before a single arbitrator selected by the parties. In the event the parties cannot agree on an arbitrator, then the Association will supply both parties with a list of seven names. The parties will alternatively

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strike one name until only one remains. First choice will be determined by a coin toss, the winning party having the option of striking first. All expenses of arbitration shall be borne equally by the parties, except for attorneys' fees which shall be borne entirely by each party. The arbitrator shall have no power to amend, alter, add to or delete from this Agreement.

Beyer acknowledges that the CME would be irreparably injured by a violation of Paragraph 6 and he agrees that the CME, in addition to any other remedies available to it for such breach or threatened breach, shall be entitled to a preliminary injunction, temporary restraining order, or other equivalent relief, restraining Beyer from any actual or threatened breach of Paragraph 6 pending and in aid of arbitration of the dispute. If a bond is required to be posted in order for the CME to secure an injunction or other equitable remedy, the parties agree that such bond need not be more than a nominal sum.

8. Return of Property. Upon his last day of active work, Beyer hereby agrees to immediately turn over to the CME any keys, credit cards, passes, and all notes, memoranda, records, documents, computer disks, and all other information, no matter how produced or reproduced, kept by Beyer or in his possession or control, used in or pertaining to the business of the CME, it being hereby acknowledged that all of said items are the sole and exclusive property of the CME.

9. Defense of Claims. During the period of his employment by the CME, and for periods after the termination of his

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employment, Beyer shall reasonably cooperate with the CME at its request in the defense or prosecution of any claim that may be made by or against the CME. Such cooperation shall include, without limitation, serving as a witness at trial or hearing, being deposed, and preparation for same. For the period after Beyer terminates his employment with the CME, the CME shall reimburse Beyer for all reasonable expenses in connection therewith, including travel expenses, and shall compensate him at a daily rate equal to his annual base salary on the date his employment with the CME terminates, divided by 260, with days used for preparation, travel and other related matters being included for purposes of determining the compensation due to Beyer. Less than full days shall be paid for by the hour, determined by dividing the daily rate by eight. To the extent reasonably practicable, the CME shall provide Beyer with notice at least ten days prior to the date on which any such travel is required.

10. Nonalienation. The interests of Beyer under this Agreement are not subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment, or garnishment by creditors of Beyer or Beyer's beneficiaries.

11. Amendment. This Agreement may be amended or cancelled only by the subsequent mutual written agreement of the parties.

12. Applicable Law. The provisions of this Agreement shall be construed in accordance with the laws of the State of

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Illinois, without regard to the conflict of law provisions of any state.

13. Waiver of Breach. No waiver of any party hereto of a breach of any provision of this Agreement by any other party, or of compliance with any condition or provision of this Agreement to be performed by such other party, will operate or be construed as a waiver of any subsequent breach by such other party or any similar or dissimilar provisions and conditions at the same or any prior or subsequent time. The failure of any party hereto to take any action by reason of such breach will not deprive such party of the right to take action at any time while such breach continues.

14. Notices. Notices and all other communications provided for in this Agreement shall be in writing and shall be delivered personally or sent by registered or certified mail, return receipt requested, postage prepaid, or sent by facsimile or prepaid overnight courier to the parties at, respectively, the business address of the CME in care of its President and the home address of Beyer (or to Beyer at the business address of the CME if Beyer is employed there at the time of such notice). Such notices and other communications shall be deemed given:

a. in the case of delivery by overnight service with guaranteed next day delivery, the next day or the day designated for delivery;

b. in the case of certified or registered U.S. mail, five days after deposit in the U.S. mail; or

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c. in the case of facsimile, the date upon which the transmitting party received confirmation of receipt by facsimile, telephone or otherwise; provided, however, that in no event shall any such communications be deemed to be given later than the date they are actually received.

15. Severability. If any provision, section, subsection or other portion of this Agreement shall be determined by any court of competent jurisdiction to be invalid, illegal or unenforceable in whole or in part, and such determination shall become final, such provision or portion shall be deemed to be severed or limited, but only to the extent required to render the remaining provisions and portions of this Agreement enforceable. This Agreement as thus amended shall be enforced so as to give effect to the intention of the parties insofar as that is possible. In adaition, the parties hereby expressly empower a court of competent jurisdiction to modify any term or provision of this Agreement to the extent necessary to comply with existing law and to enforce this Agreement as modified.

16. Survival of Agreement; Successors. Except as otherwise expressly provided in this Agreement, the rights and obligations of the parties to this Agreement shall survive the termination of Beyer's employment with the CME. In the event of a merger, sale, reorganization or other change of control, this Agreement shall be binding upon and inure to the benefit of any successor of the CME.

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17. Entire Agreement. This Agreement constitutes the entire agreement between the parties concerning the subject matter hereof and supersedes all prior and contemporaneous agreements, if any, between the parties relating to the subject matter hereof.

18. Counterparts. This Agreement may be signed in multiple counterparts, each of which shall be deemed to be an original for all purposes.

19. Acknowledgement by Beyer. Beyer represents that he is knowledgeable and sophisticated as to business matters, including the subject matter of this Agreement, that he has read this Agreement and that he understands its terms. Beyer acknowledges that, prior to assenting to the terms of this Agreement, he has been given a reasonable time to review it, to consult with counsel of his choice, and to negotiate at arm's-length with the CME as to the contents. Beyer and the CME agree that the language used in this Agreement is the language chosen by the parties to express their mutual intent, and that no rule of strict construction is to be applied against any party hereto.

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IN WITNESS WHEREOF, the parties have executed this Agreement on the date(s) set forth below.

CHICAGO MERCANTILE EXCHANGE

By /s/ William Brodsky
   ----------------------------

Title: President
      -------------------------
Date:  4/12/96
      -------------------------

/s/ Gerald D. Beyer      /s/ Gerald D. Beyer
------------------------------------------------
Gerald D. Beyer

Date 4-12-96 12/10/99

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Exhibit 10.11 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

EMPLOYMENT AGREEMENT

This Employment Agreement ("Agreement") is entered into by and between the
CHICAGO MERCANTILE EXCHANGE ("CME") and PHUPINDER GILL ("Gill").

WHEREAS, the parties desire to enter into this Agreement pertaining to the employment of Gill by the CME.

NOW, THEREFORE, in consideration of the mutual promises and covenants set forth below, the parties hereby agree as follows:

1. Employment. Subject to the terms of this Agreement, the CME hereby agrees to employ Gill during the Agreement Term as President, CME Clearing House, and Gill hereby accepts such employment. Gill shall report directly to the Senior Executive Vice President, Planning and Development, ("SEVP"). As President, CME Clearing House, Gill shall have overall responsibility for the Clearing House Division and such other duties as may be assigned to him by the SEVP, President or Board of Directors of the CME. These duties may be changed from time-to-time as determined by the SEVP, President or Board of Directors of the CME, provided that any such duties shall be consistent with the position of President, CME Clearing House. During his employment, Gill agrees to devote his full time, energies and talents to serving as President, CME Clearing House, and to perform his duties faithfully, efficiently and in good faith, subject to the direction of the SEVP, President or Board of Directors of the CME.

2. Agreement Term. The Agreement Term shall be for a term ending on August 31, 2001. Unless renewed by the mutual written agreement of the parties, this Agreement will automatically terminate upon the expiration of the Agreement Term. The CME will give Gill written notice of its intention to renew or not renew or to renegotiate the terms of the Agreement at least sixty (60) days prior to expiration. In the absence of renewal, upon expiration of this Agreement, Gill shall be an employee of the CME working without a contract.


3. Compensation. During the Agreement Term and while employed by the CME, the CME shall compensate Gill as follows:

a. Base Salary. Gill shall be paid an annual base salary of $400,000, payable in equal biweekly installments. Annual increases, if any, shall be as determined by the CME in accordance with its policies and practices with respect to executive compensation.

b. Benefits. Subject to their terms, Gill and any of his eligible dependents shall be entitled to participate in all fringe benefits and benefit plans of the CME under the same terms and conditions as are generally applicable to the employees and officers of the CME as those fringe benefits and benefit plans currently exist and/or as they may be amended from time to time during the Agreement Term.

c. Bonus. Subject to its terms, Gill shall participate in the CME's discretionary bonus program.

4. Termination. Gill's employment with the CME during the Agreement Term may be terminated only under the following circumstances:

a. Death. Gill's employment hereunder will terminate upon his death.

b. Disability. If Gill is disabled, and received benefits under the CME's long term disability insurance program, the obligations under this Agreement shall be suspended for the duration of such disability. In the event Gill returns to the position set forth herein during the term of this Agreement, the provisions of this Agreement shall be reinstated. In the event Gill returns to work in a different position, or does not return to work at all upon conclusion of his disability, this Agreement shall be deemed terminated.

c. Cause. Gill's employment hereunder may be immediately terminated by the CME for cause. For purposes of this Agreement, "cause" shall be defined as misconduct, incompetence, failure to perform and/or neglect of duties which is gross or willful, and shall include actions by


Gill which occur outside of the CME which would have a substantial likelihood of bringing significant discredit upon the CME.

d. Termination by Gill. This Agreement may be terminated by Gill at any time and for any reason by the giving of at least sixty (60) days advance written notice of same to the CME.

5. Payments Upon Termination or Expiration.

a. In the event of termination of Gill pursuant to Paragraphs 4a or 4b of this Agreement, the CME shall for a period of six (6) months following such termination continue Gill's base salary (or pay same to his estate).

b. In the event of termination of Gill by the CME pursuant to Paragraph 4c of this Agreement, or upon expiration of the Agreement Term, the CME shall pay to Gill only any accrued, but unused, vacation pay.

c. In the event Gill terminates this Agreement pursuant to Paragraph 4d herein with less than the sixty (60) days advance written notice of same, the parties acknowledge that the CME will be damaged thereby, but that such damages will be difficult to calculate. Accordingly, Gill will promptly pay to the CME, or allow set off against any monies it may then owe to Gill, as liquidated damages a sum equal to his base salary, computed daily, for each day his notice of termination under Paragraph 4d is less than sixty (60) days.

6. Confidentiality. Gill acknowledges that in his employment he is or will be making use of, acquiring or adding to the CME's Confidential Information which includes (but is not limited to) memoranda and other materials or records of a proprietary nature; technical data, records and policy matters relating to new business development, research, strategy, finance, accounting, marketing, personnel, clearing, management, and operations. Therefore, in order to protect such Confidential Information and to protect other employees who depend on the CME for regular employment, Gill agrees that he will not during or after the term of his employment in any way


utilize any of said Confidential Information, except in connection with his employment by the CME, and he will not copy, reproduce, or take with him the original or any copies of said Confidential Information and he will not disclose any of said Confidential Information to anyone. Further, Gill agrees to advise any new employer of the terms of this Agreement regarding Confidential Information. These restrictions regarding Confidential Information shall be in addition to those which exist at common law or by statute.

7. Arbitration; Equitable Remedies.

Any controversy or claim arising out of or relating to this Agreement or the validity, interpretation, enforceability or breach thereof, which is not settled by agreement of the parties, shall be settled by arbitration conducted in the City of Chicago, in accordance with the Rules of the American Arbitration Association, and judgment upon the award rendered in such arbitration may be entered in any court having jurisdiction. The arbitration shall be conducted before a single arbitrator selected by the parties. In the event the parties cannot agree on an arbitrator, then the Association will supply both parties with a list of seven names. The parties will alternatively strike one name until only one remains. First choice will be determined by a coin toss, the winning party having the option of striking first. All expenses of arbitration shall be borne equally by the parties, except for attorneys' fees which shall be borne entirely by each party. The arbitrator shall have no power to amend, alter, add to or delete from this Agreement.

Gill acknowledges that the CME would be irreparably injured by a violation of Paragraph 6 and he agrees that the CME, in addition to any other remedies available to it for such breach or threatened breach, shall be entitled to a preliminary injunction, temporary restraining order, or other equivalent relief, restraining Gill from any actual or threatened breach of Paragraph 6 pending and in aid of arbitration of the dispute. If a bond is required to be posted in order for the


CME to secure an injunction or other equitable remedy, the parties agree that such bond need not be more than a nominal sum.

8. Return of Property. Upon his last day of active work, Gill hereby agrees to immediately turn over to the CME any keys, credit cards, passes, and all notes, memoranda, records, documents, computer disks, and all other information, no matter how produced or reproduced, kept by Gill or in his possession or control, used in or pertaining to the business of the CME, it being hereby acknowledged that all of said items are the sole and exclusive property of the CME.

9. Defense of Claims. During the period of his employment by the CME, and for periods after the termination of his employment, Gill shall reasonably cooperate with the CME at its request in the defense or prosecution of any claim that may be made by or against the CME. Such cooperation shall include, without limitation, serving as a witness at trial or hearing, being deposed, and preparation for same. For the period after Gill terminates his employment with the CME, the CME shall reimburse Gill for all reasonable expenses in connection therewith, including travel expenses, and shall compensate him at a daily rate equal to his annual base salary on the date his employment with the CME terminates, divided by 260, with days used for preparation travel and other related matters being included for purposes of determining the compensation due to Gill. Less than full days shall be paid for by the hour, determined by dividing the daily rate by eight. To the extent reasonably practicable, the CME shall provide Gill with notice at least ten days prior to the date on which any such travel is required.

10. Nonalienation. The interests of Gill under this Agreement are not subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment, or garnishment by creditors of Gill or Gill's beneficiaries.


11. Amendment. This Agreement may be amended or cancelled only by the subsequent mutual written agreement of the parties.

12. Applicable Law. The provisions of this Agreement shall be construed in accordance with the laws of the State of Illinois, without regard to the conflict of law provisions of any state.

13. Waiver of Breach. No waiver of any party hereto of a breach of any provision of this Agreement by any other party, or of compliance with any condition or provision of this Agreement to be performed by such other party, will operate or be construed as a waiver of any subsequent breach by such other party or any similar or dissimilar provisions and conditions at the same or any prior or subsequent time. The failure of any party hereto to take any action by reason of such breach will not deprive such party of the right to take action at any time while such breach continues.

14. Notices. Notices and all other communications provided for in this Agreement shall be in writing and shall be delivered personally or sent by registered or certified mail, return receipt requested, postage prepaid, or sent by facsimile or prepaid overnight courier to the parties at, respectively, the business address of the CME in care of its President and the home address of Gill (or to Gill at the business address of the CME if Gill is employed there at the time of such notice). Such notices and other communications shall be deemed given:

a. in the case of delivery by overnight service with guaranteed next day delivery, the next day or the day designated for delivery;

b. in the case of certified or registered U.S. mail, five days after deposit in the U.S. mail; or

c. in the case of facsimile, the date upon which the transmitting party received confirmation of receipt by facsimile, telephone or otherwise;


provided, however, that in no event shall any such communications be deemed to be given later than the date they are actually received.

15. Severability. If any provision, section, subsection or other portion of this Agreement shall be determined by any court of competent jurisdiction to be invalid, illegal or unenforceable in whole or in part, and such determination shall become final, such provision or portion shall be deemed to be severed or limited, but only to the extent required to render the remaining provisions and portions of this Agreement enforceable. This Agreement as thus amended shall be enforced so as to give effect to the intention of the parties insofar as that is possible. In addition, the parties hereby expressly empower a court of competent jurisdiction to modify any term or provision of this Agreement to the extent necessary to comply with existing law and to enforce this Agreement as modified.

16. Survival of Agreement; Successors. Except as otherwise expressly provided in this Agreement, the rights and obligations of the parties to this Agreement shall survive the termination of Gill's employment with the CME. In the event of a merger, sale, reorganization or other change of control, this Agreement shall be binding upon and inure to the benefit of any successor of the CME.

17. Entire Agreement. This Agreement constitutes the entire agreement between the parties concerning the subject matter hereof and supersedes all prior and contemporaneous agreements, if any, between the parties relating to the subject matter hereof.

18. Counterparts. This Agreement may be signed in multiple counterparts, each of which shall be deemed to be an original for all purposes.

19. Acknowledgement by Gill. Gill represents that he is knowledgeable and sophisticated as to business matters, including the subject matter of this Agreement, that he has read this Agreement and that he understands its terms. Gill acknowledges that, prior to assenting


to the terms of this Agreement, he has been given a reasonable time to review it, to consult with counsel of his choice, and to negotiate at arm's length with the CME as to the contents. Gill and the CME agree that the language used in this Agreement is the language chosen by the parties to express their mutual intent, and that no rule of strict construction is to be applied against any party hereto.

IN WITNESS WHEREOF, the parties have executed this Agreement on the date(s) set forth below.

CHICAGO MERCANTILE EXCHANGE

By    /s/ Gerald D. Beyer
      -------------------
Title EVP & COO
      -------------------
Date  9-1-99
      -------------------

/s/ Phupinder Gill
-------------------------
Phupinder Gill

Date 9/8/99



Exhibit 10.12 Chicago Mercantile Exchange Inc. Registration Statement on Form S-4

EMPLOYMENT AGREEMENT

This Employment Agreement ("Agreement") is entered into by and between the CHICAGO MERCANTILE EXCHANGE ("CME") and WILLIAM JENKS ("Jenks") this 17/th/ day
of July, 1998.

WHEREAS, the parties desire to enter into this Agreement pertaining to the employment of Jenks by the CME.

NOW, THEREFORE, in consideration of the mutual promises and covenants set forth below, the parties hereby agree as follows:

1. Employment. Subject to the terms of this Agreement, the CME hereby agrees to employ Jenks during the Agreement Term as Executive Vice President, Management Information Systems, ("MIS"), and Jenks hereby accepts such employment. Jenks shall report directly to the Executive Vice President, Chief Operating Officer ("EVP/COO") of the CME. As Executive Vice President of MIS, Jenks shall have overall responsibility for the MIS division and such other duties as may be assigned to him by the EVP/COO, President or Board of Directors of the CME. These duties may be changed from time-to-time as determined by the EVP/COO, President or Board of Directors of the CME, provided that any such duties shall be consistent with the position of Executive Vice President, MIS. During his employment, Jenks agrees to devote his full time, energies and talents to serving as Executive Vice President, MIS, of the CME, and to perform his duties faithfully, efficiently and in good faith, subject to the direction of the EVP/COO and/or President and/or Board of Directors of the CME.

2. Agreement Term. The Agreement Term shall be for a term ending on June 30, 2000. Unless renewed by the mutual written agreement of the parties, this Agreement will automatically terminate upon the expiration of the Agreement Term. The CME will give Jenks written notice of its intention to renew or not renew or to renegotiate the terms of the Agreement


at least sixty (60) days prior to expiration. In the absence of renewal, upon expiration of this Agreement, Jenks shall be an employee of the CME working without a contract.

3. Compensation. During the Agreement Term and while employed by the CME, the CME shall compensate Jenks as follows:

a. Base Salary. Jenks shall be paid an annual base salary of Two hundred fifty thousand dollars ($250,000.00), payable in equal bi-weekly installments. Annual increases, if any, shall be as determined by the CME in accordance with its policies and practices with respect to executive compensation.

b. Benefits. Subject to their terms, Jenks and any of his eligible dependents shall be entitled to participate in all fringe benefits and benefit plans of the CME under the same terms and conditions as are generally applicable to the employees and officers of the CME as those fringe benefits and benefit plans currently exist and/or as they may be amended from time to time during the Agreement Term.

c. Bonus. Subject to its terms, Jenks shall participate in the CME's discretionary bonus program.

4. Termination. Jenks's employment with the CME during the Agreement Term may be terminated only under the following circumstances:

a. Death. Jenks's employment hereunder will terminate upon his death.

b. Disability. If Jenks is disabled, and received benefits under the CME's long term disability insurance program, the obligations under this Agreement shall be suspended for the duration of such disability. In the event Jenks returns to the position set forth herein during the term of this Agreement, the provisions of this Agreement shall be reinstated. In the event Jenks returns to work in a different position, or does not return to work at all upon conclusion of his disability, this Agreement shall be deemed terminated.


c. Cause. Jenks's employment hereunder may be immediately terminated by the CME for cause. For purposes of this Agreement, "cause" shall be defined as misconduct, incompetence, failure to perform and/or neglect of duties which is gross or willful, and shall include actions by Jenks which occur outside of the CME which would have a substantial likelihood of bringing significant discredit upon the CME.

d. Termination by Jenks. This Agreement may be terminated by Jenks at any time and for any reason by the giving of at least sixty (60) days advance written notice of same to the CME.

5. Payments Upon Termination or Expiration.

a. In the event of termination of Jenks pursuant to Paragraphs 4a or 4b of this Agreement, the CME shall for a period of six (6) months following such termination continue Jenks's base salary (or pay same to his estate).

b. In the event of termination of Jenks by the CME pursuant to Paragraph 4c of this Agreement, or upon expiration of the Agreement Term, the CME shall pay to Jenks only any accrued, but unused, vacation pay.

c. In the event Jenks terminates this Agreement pursuant to Paragraph 4d herein with less than the sixty (60) days advance written notice of same, the parties acknowledge that the CME will be damaged thereby, but that such damages will be difficult to calculate. Accordingly, Jenks will promptly pay to the CME, or allow set off against any monies it may then owe to Jenks, as liquidated damages a sum equal to his base salary, computed daily, for each day his notice of termination under Paragraph 4d is less than sixty (60) days.

6. Confidentialty. Jenks acknowledges that in his employment he is or will be making use of, acquiring or adding to the CME's Confidential Information which includes (but is not limited to) memoranda and other materials or records of a proprietary nature; technical data,


records and policy matters relating to new business development, research, strategy, finance, accounting, marketing, personnel, clearing, management, and operations. Therefore, in order to protect such Confidential Information and to protect other employees who depend on the CME for regular employment, Jenks agrees that he will not during or after the term of his employment in any way utilize any of said Confidential Information, except in connection with his employment by the CME, and he will not copy, reproduce, or take with him the original or any copies of said Confidential Information and he will not disclose any of said Confidential Information to anyone. Further, Jenks agrees to advise any new employer of the terms of this Agreement regarding Confidential Information. These restrictions regarding Confidential Information shall be in addition to those which exist at common law or by statute.

7. Arbitration; Equitable Remedies.

Any controversy or claim arising out of or relating to this Agreement or the validity, interpretation, enforceability or breach thereof, which is not settled by agreement of the parties, shall be settled by arbitration conducted in the City of Chicago, in accordance with the Rules of the American Arbitration Association, and judgment upon the award rendered in such arbitration may be entered in any court having jurisdiction. The arbitration shall be conducted before a single arbitrator selected by the parties. In the event the parties cannot agree on an arbitrator, then the Association will supply both parties with a list of seven names. The parties will alternatively strike one name until only one remains. First choice will be determined by a coin toss, the winning party having the option of striking first. All expenses of arbitration shall be borne equally by the parties, except for attorneys' fees which shall be borne entirely by each party. The arbitrator shall have no power to amend, alter, add to or delete from this Agreement.

Jenks acknowledges that the CME would be irreparably injured by a violation of Paragraph 6 and he agrees that the CME, in addition to any other remedies available to it for


such breach or threatened breach, shall be entitled to a preliminary injunction, temporary restraining order, or other equivalent relief, restraining Jenks from any actual or threatened breach of Paragraph 6 pending and in aid of arbitration of the dispute. If a bond is required to be posted in order for the CME to secure an injunction or other equitable remedy, the parties agree that such bond need not be more than a nominal sum.

8. Return of Property. Upon his last day of active work, Jenks hereby agrees to immediately turn over to the CME any keys, credit cards, passes, and all notes, memoranda, records, documents, computer disks, and all other information, no matter how produced or reproduced, kept by Jenks or in his possession or control, used in or pertaining to the business of the CME, it being hereby acknowledged that all of said items are the sole and exclusive property of the CME.

9. Defense of Claims. During the period of his employment by the CME, and for periods after the termination of his employment, Jenks shall reasonably cooperate with the CME at its request in the defense or prosecution of any claim that may be made by or against the CME. Such cooperation shall include, without limitation, serving as a witness at trial or hearing, being deposed, and preparation for same. For the period after Jenks terminates his employment with the CME, the CME shall reimburse Jenks for all reasonable expenses in connection therewith, including travel expenses, and shall compensate him at a daily rate equal to his annual base salary on the date his employment with the CME terminates, divided by 260, with days used for preparation, travel and other related matters being included for purposes of determining the compensation due to Jenks. Less than full days shall be paid for by the hour, determined by dividing the daily rate by eight. To the extent reasonably practicable, the CME shall provide Jenks with notice at least ten days prior to the date on which any such travel is required.


10. Nonalienation. The interests of Jenks under this Agreement are not subject in any manner to anticipation, alienation, sale, transfer, assignment, pledge, encumbrance, attachment, or garnishment by creditors of Jenks or Jenks's beneficiaries.

11. Amendment. This Agreement may be amended or cancelled only by the subsequent mutual written agreement of the parties.

12. Applicable Law. The provisions of this Agreement shall be construed in accordance with the laws of the State of Illinois, without regard to the conflict of law provisions of any state.

13. Waiver of Breach. No waiver of any party hereto of a breach of any provision of this Agreement by any other party, or of compliance with any condition or provision of this Agreement to be performed by such other party, will operate or be construed as a waiver of any subsequent breach by such other party or any similar or dissimilar provisions and conditions at the same or any prior or subsequent time. The failure of any party hereto to take any action by reason of such breach will not deprive such party of the right to take action at any time while such breach continues.

14. Notices. Notices and all other communications provided for in this Agreement shall be in writing and shall be delivered personally or sent by registered or certified mail, return receipt requested, postage prepaid, or sent by facsimile or prepaid overnight courier to the parties at, respectively, the business address of the CME in care of its President and the home address of Jenks (or to Jenks at the business address of the CME if Jenks is employed there at the time of such notice). Such notices and other communications shall be deemed given:

a. in the case of delivery by overnight service with guaranteed next day delivery, the next day or the day designated for delivery;

b. in the case of certified or registered U.S. mail, five days after deposit in the U.S. mail; or


c. in the case of facsimile, the date upon which the transmitting party received confirmation of receipt by facsimile, telephone or otherwise; provided, however, that in no event shall any such communications be deemed to be given later than the date they are actually received.

15. Severability. If any provision, section, subsection or other portion of this Agreement shall be determined by any court of competent jurisdiction to be invalid, illegal or unenforceable in whole or in part, and such determination shall become final, such provision of portion shall be deemed to be severed or limited, but only to the extent required to render the remaining provisions and portions of this Agreement enforceable. This Agreement as thus amended shall be enforced so as to give effect to the intention of the parties insofar as that is possible. In addition, the parties hereby expressly empower a court of competent jurisdiction to modify any term or provision of this Agreement to the extent necessary to comply with existing law and to enforce this Agreement as modified.

16. Survival of Agreement; Successors. Except as otherwise expressly provided in this Agreement, the rights and obligations of the parties to this Agreement shall survive the termination of Jenks's employment with the CME. In the event of a merger, sale, reorganization or other change of control, this Agreement shall be binding upon and inure to the benefit of any successor of the CME.

17. Entire Agreement. This Agreement constitutes the entire agreement between the parties concerning the subject matter hereof and supersedes all prior and contemporaneous agreements, if any, between the parties relating to the subject matter hereof.

18. Counterparts. This Agreement may be signed in multiple counterparts, each of which shall be deemed to be an original for all purposes.


19. Acknowledgement by Jenks. Jenks represents that he is knowledgeable and sophisticated as to business matters, including the subject matter of this Agreement, that he has read this Agreement and that he understands its terms. Jenks acknowledges that, prior to assenting to the terms of this Agreement, he has been given a reasonable time to review it, to consult with counsel of his choice, and to negotiate at arm's length with the CME as to the contents. Jenks and the CME agree that the language used in this Agreement is the language chosen by the parties to express their mutual intent, and that no rule of strict construction is to be applied against any party hereto.

IN WITNESS WHEREOF, the parties have executed this Agreement on the date(s) set forth below.

CHICAGO MERCANTILE EXCHANGE

By /s/ Gerald J. Beyer
   ----------------------
Title  EVP/COO
       ------------------
Date  7-13-98
     --------------------

/s/ William Jenks
-------------------------
William Jenks

Date 7-20-98



Exhibit 10.14 Chicago Mercantile Exchange, Inc. Registration Statement on Form S-4

LEASE

THIS LEASE, made as of this 11th day of November, 1983 by and between the CME Real Estate Co. of Chicago, Illinois, an Illinois corporation (hereinafter known as "Landlord") and the Chicago Mercantile Exchange, an Illinois not-for- profit corporation (hereinafter known as "Tenant" or "CME").

WITNESSETH:

THAT Landlord hereby leases to Tenant, and Tenant accepts the demised premises (hereinafter known as "demised premises" or "premises"), being The Main Trading Floor; Main Trading Hall; Main Trading Hall Interstitial Space; Expansion Trading Hall; and Expansion Trading Hall Interstitial Space in the building (hereinafter known as the "Chicago mercantile Exchange Center"), at 30 South Wacker Drive, Chicago, Illinois, for the term of Fifteen (15) Years, unless sooner terminated as provided herein, commencing on the Commencement Date (defined in Section 2) and ending on the last day of the calendar month preceeding the calendar month of commencement, 15 years thereafter ("Termination Date"), to be occupied and used by Tenant for the trading floor facility of the Chicago Mercantile Exchange (and other uses associated therewith) and no other purpose, subject to the agreements herein contained.

IN CONSIDERATION THEREOF, THE PARTIES COVENANT AND AGREE:

1. BASE RENT:

A. Tenant shall pay as Base Rent to the Landlord (or its successor or assignee) at 222 South Riverside Plaza, Chicago, Illinois, or to such other person or such other place as the Landlord may direct in writing, the Base Rent of TEN MILLION, FIVE HUNDRED TWENTY-ONE THOUSAND, NINE HUNDRED AND NO/HUNDREDTHS


DOLLARS ($10,521,900.00) in one hundred eighty (180) equal monthly installments of FIFTY-EIGHT THOUSAND, FOUR HUNDRED FIFTY-FIVE AND NO/HUNDREDTHS DOLLARS ($58,455.00) in advance or before the first day of each and every calendar month of the Term, except that the Tenant shall pay the first monthly installment upon occupancy of the demised premises. Base Rent unpaid for thirty (30) days or more, shall bear interest pursuant to Section 20(f) from the date due until paid. Time is of the essence of this Lease.

B. For each extended term, as provided in Section 23, the Base Rent shall be adjusted as follows:

(i) First Extended Term: The Base Rent shall be FOUR MILLION, THREE
HUNDRED SIXTY-EIGHT THOUSAND AND NO/HUNDREDTHS DOLLARS ($4,368,000.00) payable in eighty-four (84) equal monthly installments of FIFTY-TWO THOUSAND AND NO/HUNDREDTHS DOLLARS ($52,000.00).

(ii) Second Extended Term: The Base Rent shall be TWO MILLION, THREE
HUNDRED NINETY-FOUR THOUSAND AND NO/HUNDREDTHS DOLLARS ($2,394,000.00) payable in eighty-four (84) equal monthly installments of TWENTY-EIGHT THOUSAND FIVE HUNDRED AND NO/HUNDREDTHS DOLLARS ($28,500.00

(iii) Third Extended Term: The Base Rent shall be SEVEN HUNDRED
NINETY-EIGHT THOUSAND AND NO/HUNDREDTHS DOLLARS ($798,000.00) payable in eighty-four (84) equal monthly installments of NINE THOUSAND FIVE HUNDRED AND NO/HUNDREDTHS DOLLARS ($9,500.00).

(iv) Fourth Extended Term: The Base Rent shall be ONE HUNDRED SIXTY-
EIGHT THOUSAND AND NO/HUNDREDTHS DOLLARS ($168,000.00) payable in eighty- four (84) equal monthly installments of TWO THOUSAND AND NO/HUNDREDTHS DOLLARS ($2,000.00).

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2. RENT ADJUSTMENT: The Base Rent shall be adjusted in accordance with the provisions of this Section.

A. For purposes of this Lease:

(i) "Trading Volume" means the actual number of contracts traded in all commodities on the CME and its divisions each calendar year.

(ii) "Base Year" means the calendar year in which the Threshold Volume is fixed for purpose of the calculation of additional rent. For purposes of this sub-section, the Base Year shall be 1988.

(iii) "Threshold Volume" is the level of Trading Volume at which the Tenant will be liable for additional rent. It allows the Landlord to participate in the growth of the CME.

For the Base Year, 1988, the annual Threshold Volume is fixed at 50,000,000 contracts; every third year thereafter through the end of the initial term, and through each extended term thereof, the Threshold Volume will increase by 15,000,000 contracts.

(iv) "Excess Volume" means Trading Volume in excess of the applicable Threshold Volume.

(v) "Additional Rent" means any amount owed by Tenant to Landlord resulting from Excess Volume determined as follows:

(1) Commencing in the Base Year CME shall determine if there is Excess Volume and, if such condition exists, then Tenant shall be liable for Additional Rent determined by applying the rate per contract (as set forth in 2A(v)(2) below), times the Excess Volume. Such amount of Additional Rent shall be paid within ninety (90) days of each calendar year for which it is due.

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(2) Rate per Contract:

     Total Trading Volume                    Rate
     --------------------                   ------
     Up to 100,000,000 contracts            $ .01
     From 100,000,000 to 150,000,000          .008
     From 150,000,000 to 200,000,000          .006
     Excess of 200,000,000                    .004

(vi) "Leasehold Improvements" means any furnishings and/or equipment installed upon the premises by Tenant prior to, or contemplated and budgeted at, the time of commencement of this Lease. Such Leasehold Improvements shall inure to the benefit of Landlord, as hereinafter provided.

(vii) "Non-Cash Rent" means any amount of rent owed by Tenant to Landlord as a result of the Leasehold Improvements inuring to the benefit of Landlord.

(1) Tenant shall be liable for Non-Cash Rent in the amount of NINE MILLION, NINE HUNDRED SIXTY-SEVEN THOUSAND, THREE HUNDRED EIGHTY AND NO/HUNDREDTHS DOLLARS ($9,967,380.00) in six equal annual installments of ONE MILLION, SIX HUNDRED SIXTY-ONE THOUSAND, TWO HUNDRED THIRTY AND NO/HUNDREDTHS DOLLARS ($1,661,230.00).

(2) Such amount shall be transferred and deemed paid on the first day of the calendar year beginning with the calendar year 1990 by transfer of a portion of the identified Leasehold Improvements set forth in 2A(vi) above.

(viii) "ROI--Cash" means additional rent owed by Tenant which is the monetary equivalent to an imputed amount which Landlord would be otherwise entitled to "earn" on the Leasehold Improvements deemed transferred in 2A(vii)(2) above, which amount has been determined and agreed as set forth below.

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(1) Beginning the first day of the calendar month of the Seventh
(7th) anniversary of the commencement date and continuing through to the Termination Date of the initial term, Tenant shall be liable for ROI--Cash rent in the following amounts:

For the year beginning on: 7th Anniversary Date: ONE HUNDRED SIXTEEN THOUSAND, TWO HUNDRED EIGHTY-SIX AND NO/HUNDREDTHS DOLLARS ($116,286.00) in twelve (12) equal monthly installments of NINE THOUSAND, SIX HUNDRED NINETY AND 50/HUNDREDTHS DOLLARS ($9,690.50).

8th Anniversary Date: TWO HUNDRED FORTY THOUSAND, SEVEN
HUNDRED TWENTY AND NO/HUNDREDTHS DOLLARS ($240,720.00) in twelve
(12) equal monthly installments of TWENTY THOUSAND SIXTY AND NO/HUNDREDTHS DOLLARS ($20,060.00).

9th Anniversary Date: THREE HUNDRED SEVENTY-THREE THOUSAND
EIGHT HUNDRED FORTY EIGHT AND NO/HUNDREDTHS DOLLARS ($373,848.00) in twelve (12) equal monthly installments of THIRTY ONE THOUSAND ONE HUNDRED FIFTY-FOUR and NO/HUNDREDTHS DOLLARS ($31,154.00).

10th Anniversary Date: FIVE HUNDRED SIXTEEN THOUSAND, THREE
HUNDRED AND NO/HUNDREDTHS DOLLARS ($516,300.00) in twelve (12) equal monthly installments of FORTY THREE THOUSAND TWENTY-FIVE AND NO/HUNDREDTHS DOLLARS ($43,025.00).

11th Anniversary Date: SIX HUNDRED SIXTY-EIGHT THOUSAND,
SEVEN HUNDRED THIRTY-SIX AND NO/HUNDREDTHS DOLLARS ($668,736.00) in twelve (12) equal monthly installments of FIFTY FIVE THOUSAND, SEVEN HUNDRED TWENTY-EIGHT AND NO/HUNDREDTHS DOLLARS ($55,728.00).

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12th Anniversary Date: EIGHT HUNDRED THIRTY-ONE THOUSAND,
EIGHT HUNDRED TWENTY-EIGHT AND NO/HUNDREDTHS DOLLARS ($831,828.00) in twelve (12) equal monthly installments of SIXTY- NINE THOUSAND THREE HUNDRED NINETEEN AND NO/HUNDREDTHS DOLLARS ($69,319.00).

For the two years beginning on:

13th Anniversary Date: TWO MILLION, ONE HUNDRED FIVE
THOUSAND, ONE HUNDRED EIGHTY-FOUR AND NO/HUNDREDTHS DOLLARS ($2,105,184.00) in twenty four (24) equal monthly installments of EIGHTY-SEVEN THOUSAND, SEVEN HUNDRED SIXTEEN AND NO/HUNDREDTHS DOLLARS ($87,716.00), which represents a return of capital plus ROI--Cash.

(2) For each extended term, as provided in Section 23, the ROI-- Cash Rent and return of capital shall be adjusted as follows:

(a) First extended term: The ROI--Cash Rent shall be FIVE MILLION, SEVENTY-THREE THOUSAND, NINE HUNDRED THIRTY-SIX AND NO/HUNDREDTHS DOLLARS ($5,073,936.00) payable in eighty-four (84) equal monthly installments of SIXTY THOUSAND, FOUR HUNDRED FOUR AND NO/HUNDREDTHS DOLLARS ($60,404.00).

(b) Second extended term: TWO MILLION, SEVEN HUNDRED SEVENTY-TWO THOUSAND, THREE HUNDRED THIRTY-SIX AND NO/HUNDREDTHS DOLLARS ($2,772,336.00) payable in eighty-four (84) equal monthly installments of THIRTY-THREE THOUSAND FOUR AND NO/HUNDREDTHS
DOLLARS ($33,004.00).

(c) Third extended term: ONE MILLION, NINE HUNDRED EIGHTY- THREE THOUSAND, FOUR HUNDRED EIGHT AND NO/HUNDREDTHS DOLLARS ($1,983,408.00) payable in eighty-four (84) equal monthly installments of TWENTY-THREE THOUSAND SIX HUNDRED TWELVE AND NO/HUNDREDTHS DOLLARS ($23,612.00).

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(d) Fourth extended term: ONE MILLION, TWO HUNDRED TWENTY- FIVE THOUSAND, TWO HUNDRED TWENTY-FOUR AND NO/HUNDREDTHS DOLLARS ($1,225,224.00) payable in eighty-four equal monthly installments of FOURTEEN THOUSAND, FIVE HUNDRED EIGHTY-SIX AND NO/HUNDREDTHS
DOLLARS ($14,586.00).

(ix) "Commencement Date" means the first day that the Tenant occupies and uses such premises for the trading of commodity futures contracts consistent with Section 3 (USE).

(x) "Termination Date" means the final day of the initial or any extended term hereof.

B. Tenant shall, at its sole expense, be liable for all expenses and taxes in connection with operation of the demised premises:

(i) "Expenses" means and includes those expenses paid or incurred for maintaining, operating and repairing the premises or improvements thereto; the cost of electricity, steam, water, fuel, heating, lighting, air- conditioning, window cleaning, janitorial service, insurance, including but not limited to fire, extended coverage, liability, workmen's compensation, elevator, or any other insurance carried in good faith and applicable to the premises or improvements thereto, painting, uniforms, customary management fees, supplies, sundries, sales or use taxes on supplies or services, cost of wages and salaries of all persons engaged in the operation, maintenance, and repair of the premises or improvements thereto, and so-called fringe benefits, including social security taxes, unemployment insurance taxes, cost for providing coverage for disability benefits, cost of any expansions, hospitalization, welfare or retirement plans, or any other similar or like expenses incurred under the provisions of any collective bargaining agreement, or any other cost or expense which is paid or incurred to provide any independent contractor who, under contract with, does any of the work of operating, maintaining or repairing of the premises or improvements thereto, legal and accounting expenses, including, but not to

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be limited to, such expenses as relate to seeking or obtaining reductions in and refunds of Taxes, or any other expense or charge, whether or not hereinbefore mentioned, which in accordance with generally accepted accounting and management principles would be considered as an expense of maintaining, operating, or repairing the premises or improvements thereto.

(ii) "Taxes" means real estate taxes, assessments, sewer rents, rates and charges, transit taxes, taxes based upon the receipt of rent, and any other federal, state or local governmental charge, general, special, ordinary or extraordinary (but not including income or franchise taxes or any other taxes imposed upon or measured by Landlord's income or profits, unless the same shall be imposed in lieu of real estate taxes), which may now or hereafter be levied or assessed against the premises or improvements thereto. In case of special taxes or assessments which may be payable in installments, only the amount of each installment paid during a calendar year shall be included in taxes for that year. Taxes shall also include any personal property taxes (attributable to the year in which paid) imposed upon the furniture, fixtures, machinery, equipment, apparatus, systems and appurtenances used in connection with the premises or improvements thereto for the operation thereof. The amount of Taxes attributable to any calendar year of the Lease term shall be the amount of Taxes payable in such year, notwithstanding that in each case the assessments for such Taxes may have been made for a different year or years than the year in which payable.

C. Notwithstanding any provision hereunder, the maximum annual cash rental expense (inclusive of Base Rent and Rent Adjustment, but excluding Non Cash Rent), howsoever determined, shall not be in excess of the following:

Initial Term............. $3,000,000.00
First Extended Term...... $2,500,000.00
Second Extended Term..... $2,000,000.00
Third Extended Term...... $1,500,000.00
Fourth Extended Term..... $  750,000.00

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3. USE: Tenant shall use and occupy the premises as a Commodity Exchange with directly related functions thereto, and for no other purpose without prior written consent of Landlord.

A. Tenant will not make or permit to be made any use of the demised premises which, directly or indirectly, is forbidden by public law, ordinance or governmental regulation or which may be dangerous to persons or property, or which may invalidate or increase the premium cost of any policy of insurance carried on the building or covering its operations and Tenant shall not do, or permit to be done, any act or thing upon the demised premises which will be in conflict with fire insurance policies covering the building of which the demised premises form a part. Tenant, at its sole expense shall comply with all rules, regulations, or requirements of the Illinois Inspection and Rating Bureau, or any other similar body, and shall not do, or permit anything to be done upon said premises, or bring or keep anything thereon in violation of rules, regulations or requirements of the Fire Department, Illinois Inspection and Rating Bureau, Fire Insurance Rating Organization or other authority having jurisdiction, and then only in such quantity and manner of storage as not to increase the rate of fire insurance applicable to the building.

B. Tenant assumes full responsibility for:

(i) protecting the premises from theft, robbery and pilferage,

(ii) keeping the premises secure, and

(iii) locking the doors in and to the demised premises. Any damage resulting from neglect of this clause shall be paid for by Tenant. All property belonging to Tenant, or any person in the premises, which is in the building or the premises, shall be there at the risk of Tenant or other person only, and Landlord shall not be liable for damage thereto or theft or misappropriation thereof. Tenant shall indemnify and hold Landlord harmless from any claims arising out of the above, including subrogation claims by Tenant's insurance carrier, except that nothing contained herein shall require Tenant to release, indemnify, or waive claims against Landlord for liability caused by the gross negligence of Landlord.

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4. SERVICES:

A. Tenant shall furnish at its own expense:

(i) Air-cooling when necessary to provide a temperature condition required, in Tenant's judgment or required by law (or governmental regulation), for comfortable occupancy of the demised premises under normal business operation, daily from 6:00 A.M. to 6:00 P.M. (Saturdays 8:00 A.M. to 1:00 P.M.), Sundays and holidays excepted. Tenant will also furnish heat to the demised premises, when required by law (or governmental regulation), for comfortable occupancy of the demised premises under normal business operation on business days from 6:00 A.M. to 6:00 P.M. and on Saturdays from 8:00 A.M. to 1:00 P.M., Sundays and holidays excepted.

(ii) Tenant shall supply hot and cold water for use in lavatories it installs for use. If Tenant desires water in the demised premises, cold water only shall be supplied from City of Chicago mains drawn through a line, meter, and fixtures installed by Tenant, at Tenant's expense, with Landlord's written consent.

(iii) Passenger elevator service to the Trading Floor and Expansion Floor daily from 6:00 A.M. to 6:00 P.M. (Saturdays to 1:00 P.M.), Sundays and holidays excepted.

(iv) Tenant shall provide any janitorial services or cleaning at its sole expense, with Landlord's written consent and subject to supervision of Landlord and at Tenant's sole responsibility and by janitor or cleaning contracts or employees at all times satisfactory to Landlord.

B. All electricity used in the demised premises shall be supplied by the utility company serving the building through a separate meter and be paid for by Tenant. Landlord shall not in any way be liable or responsible to Tenant for any loss or damage or expense which Tenant may sustain or incur if either the quantity or character of electric service is changed or is no longer available or suitable for Tenant's requirements. If such service is discontinued, such discontinuance shall not in any way affect this Lease or the liability of Tenant hereunder. Tenant shall receive such service directly from the utility company and Landlord hereby permits its wires and conduits, to the extent available, suitable and safety capable, to be used for such purposes. Tenant shall make no alterations or additions to the electrical equipment and/or appliances without the prior written consent of Landlord in each instance.

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Tenant covenants and agrees that at all times its use of electric current shall never exceed the capacity of the feeders to the building or the risers or wiring installation.

C. Tenant shall, at its sole expense, maintain in force during the Term, and all Renewal Terms:

(i) Comprehensive General Liability Insurance on an occurrence basis with minimum limits of liability in an amount of $500,000 for bodily injury, personal injury or death to any one person, and $1,000,000 for bodily injury, personal injury or death to more than one person, and $100,000 with respect to damage to property, including water damage; and

(ii) Fire Insurance, with extended coverage and vandalism and malicious mischief endorsements, in an amount adequate to cover the full replacement value of the demised premises and the Tenant's Leasehold Improvements paid for by Tenant; and all fixtures, contents, wall and floor coverings in the premises.

All said insurance policies shall:

(a) name Landlord, the beneficiary of the Landlord and its respective agents and employees (the "Additional Insureds", collectively) as Additional Insureds;

(b) be issued by one or more responsible insurance companies reasonably satisfactory to Landlord;

(c) not provide for deductible amounts of less than $1,000.00;

(d) contain the following provisions and endorsements:

(i) that such insurance may not be cancelled or amended without 60 days' prior written notice to Landlord;

(ii) an express waiver of any right of subrogation by the insurance company against the Additional Insureds; and

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(iii) that the policy shall not be invalidated should the insured waive in writing prior to a loss, any of all rights of recovery against any other party for losses covered by such policy.

Tenant shall deliver to Landlord, certificates of insurance of all policies and renewals thereof to be maintained by Tenant hereunder, prior to the commencement date of the Term and not less than 10 days prior to the expiration date of each policy. Tenant hereby waives all rights of recovery which it might otherwise have against Landlord and the Additional Insureds, for loss or damage to person, property or business to the extent that same may be covered by valid and collectible insurance policies.

6. POSSESSION: The demised premises shall be ready for occupancy and use on such date as consistent with Tenant's general plan for moving its entire operation to the building at 30 South Wacker Drive, Chicago, Illinois. Entry into possession of the premises by Tenant shall be conclusive evidence that the premises were in good and satisfactory condition at the time of such entry.

If at the time Tenant takes possession there remains any work to be done on the Trading Floor or Expansion Floor, by Landlord, such work shall be performed expeditiously, in a workmanlike manner and shall not unreasonably interfere with the conduct of Tenant's business. Nor will such work cause an abatement of rent.

7. ALTERATIONS AND CONSTRUCTION: Tenant shall, at its sole expense, keep the premises in good repair and tenantable condition during the Term, and Tenant shall promptly arrange at Tenant's sole expense for the repair of all damages to the premises (except for reasonable wear and tear and as otherwise provided in this Lease) and the replacement or repair of all damaged or broken glass (including signs thereon), fixtures and appurtenances within any reasonable period of time. If Tenant does not promptly make such arrangements, Landlord may, but need not, make such repairs and replacements and the amount paid by Landlord for such repairs and

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replacements shall be deemed additional rent reserved under this Lease due and payable forthwith. Landlord may enter the premises at all reasonable times to make such repairs or alterations, improvements and additions, as Landlord shall desire or deem necessary for the safety, preservation or improvement of the premises or the building, or as Landlord may be required to do by the City of Chicago or by the order or decree of any court or by any other governmental authority. Landlord shall make all extraordinary repairs required to maintain premises in a tenantable condition.

In the event Landlord or its agents or contractors shall elect or be required to make repairs, alterations, improvements or additions to the premises or the building, Landlord shall be allowed to take into and upon the premises all material that may be required to make such repairs, alterations, improvements or additions and, during the continuance of any of said work, to temporarily close doors, entryways, public space and corridors in the building and to interrupt or temporarily suspend building services and facilities without being deemed or held guilty of eviction of Tenant or for damages to Tenant's property, business or person, and the rent reserved herein shall in no way abate while said repairs, alterations, improvements or additions are being made, and Tenant shall not be entitled to maintain any set-off or counterclaim for damages of any kind against Landlord by reason thereof. Landlord may, at its option, make all such repairs, alterations, improvements or additions in and about the building and the premises during ordinary business hours, but if Tenant desires to have the same done at any other time, Tenant shall pay for all overtime and additional expenses resulting therefrom provided that the same shall not unreasonably interfere with the conduct of Tenant's business.

8. FURNISHING AND EQUIPPING BUILDING: Tenant, upon completion of the premises, shall, at its sole expense, furnish and equip the premises consistent with its use (Section 3) as a commodity exchange in accordance with the plans and specifications existing at the time of commencement of this Lease. Such furnishings and equipment (herein "Leasehold Improvements") shall inure to the benefit of Landlord in accordance with Section 2A(vii) (RENT

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ADJUSTMENT). Additionally, such Leasehold Improvements shall be consistent with maintaining a modern high-grade, first class building of the City of Chicago for lease.

9. ACCESS TO PREMISES: Tenant shall permit Landlord to erect, use and maintain pipes, ducts, wiring and conduits in and through the demised premises. Landlord or Landlord's agents shall have the right to enter upon the premises, to inspect the same, to perform janitorial and cleaning services and to make such repairs, alterations, improvements or additions to the premises or the building as Landlord may deem necessary. Landlord shall be allowed to take all material into and upon said demised premises that may be required therefore without the same constituting an eviction of Tenant in whole or in part and the Base Rent and/or Rent Adjustments shall in no wise abate while said repairs, alterations, improvements, or additions are being made. In the event Landlord's access to the premises or any part thereof pursuant to this section causes the demised premises or any part thereof to be rendered untenantable or inaccessible by Tenant for more than thirty (30) consecutive business days, then Base Rent and Rent Adjustments shall abate on a per diem basis for each day after such thirty (30) day period during which the premises or any part thereof are not tenantable or accessible. Nothing herein contained, however, shall be deemed or construed to impose upon Landlord any obligations, responsibility or liability whatsoever, for the care, supervision or repair of the premises, or any part thereof other than as herein provided. Landlord shall not be liable to Tenant for any expense, injury, loss or damage resulting from work done in or upon, or the use of, any adjacent or nearby building, land, street or alley. Nothing contained herein shall require Tenant to release, indemnify, or waive claims against Landlord for liability caused by the negligence of Landlord or their respective agents, servants or employees.

10. UNTENANTABILITY: If the demised premises or the building are made untenantable by fire or other casualty, Landlord shall proceed with all due diligence to repair, restore or rehabilitate the building or the demised premises at Landlord's expense in which event this Lease shall not terminate. If however, Landlord does not so contract or commence such reconstruction of the premises, Landlord may elect:

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A. To terminate this Lease as of the date of the fire or casualty by notice to Tenant within one hundred fifty (150) days after date, or

B. Proceed with all due diligence to repair, restore or rehabilitate the building or the demised premises at Landlord's expense, in which latter event this Lease shall not terminate, provided, however, if Landlord fails to repair, restore or rehabilitate the demised premises within 270 days after the aforementioned 150 days, then Tenant shall have the right to terminate this Lease as of the date of such fire or casualty by serving notice on Landlord within ten (10) days after the expiration of the said 270 day period.

In the event the Lease is not terminated pursuant to this provision, Base Rent and Rent Adjustments shall abate on a per diem basis during the period of untenantability. In the event of the termination of this Lease pursuant to this section, Base Rent and Rent Adjustments shall be apportioned on a per diem basis and paid to the date of the fire or other casualty. In the event that the demised premises are partially damaged by fire or other casualty but not made wholly untenantable, then Landlord shall, except during the last year of the term hereof proceed with all due diligence to repair and restore the demised premises and the Base Rent and Rent Adjustments shall abate in proportion to the untenantability of the demised premises during the period of untenantability. Notwithstanding anything hereinbefore contained in this section, if a portion of the demised premises are made untenantable as aforesaid during the last year of the term hereof, Landlord or Tenant shall have the right to terminate this Lease as of the date of the fire or other casualty by giving written notice thereof to the other within thirty (30) days after the date of the fire or other casualty, in which event the Base Rent and Rent Adjustments shall be apportioned on a per diem basis and paid to the date of such fire or other casualty.

11. SUBROGATION: The parties hereto agree to use good faith efforts to have any and all fire, extended coverage or any and all material damage insurance which may be carried endorsed with the following subrogation clause: "This insurance shall not be invalidated should the insured waive in writing prior to a loss any

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or all right of recovery against any party for loss occurring to the property described herein"; and each party hereto hereby waives all claims for recovery from the other party for any loss or damage to any of its property insured under valid and collectible insurance policies to the extent of any recovery collected under such insurance, subject to the limitation that this waiver shall apply only when it is either permitted or, by the use of such good faith efforts could have been so permitted by the applicable policy of insurance.

12. EMINENT DOMAIN: If a substantial portion of the building, or a substantial part of the demised premises, shall be lawfully taken or condemned for any public or quasi-public use or purpose, or conveyed under threat of such condemnation, the term of this Lease shall end upon, and not before, the date of the taking of possession by the condemning authority, and without apportionment of the award. Current rent shall be apportioned as of the date of such termination. If any part of the building shall be so taken or condemned, or if the grade of any street or alley adjacent to the building is changed by any competent authority and such taking or change of grade makes it necessary or desirable to demolish, substantially remodel, or restore the building, Landlord shall have the right to cancel this Lease upon not less than ninety (90) days notice prior to the date of cancellation designated in the notice. No money or other consideration shall be payable by Landlord or Tenant for the right of cancellation, and Tenant may not share in the condemnation award (or in any judgment for damages caused by the change of grade). Tenant may proceed independently in such proceedings if it chooses. If an insubstantial portion of the premises shall be lawfully taken or condemned or conveyed under threat of condemnation so that the premises can be used by Tenant for the purposes set forth in this Lease, and this Lease is not terminated by Landlord, Landlord shall repair the premises, and the Lease shall be amended to reduce Tenant's Proportion and Base Rent in the proportion of the amount taken.

13. ASSIGNMENT - SUBLETTING: Tenant may not sublet the demised premises nor any part thereof, without prior written consent of Landlord. Neither shall Tenant assign, nor hypothecate, nor mortgage, nor encumber, nor convey the demised premises or any part thereof, without prior written consent of Landlord.

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14. ASSIGNMENT BY LANDLORD: All the rights herein given to Landlord may be assigned, by operation of law or otherwise, in whole or in part, by Landlord without the consent of Tenant. This section shall include any assignment of the right to receive rent hereunder. Landlord shall be freed and relieved of all covenants and obligations of Landlord under this Lease, upon any such assignment or re-assignment provided that any such assignee shall agree to undertake such obligations and covenants.

15. CERTAIN RIGHTS RESERVED TO LANDLORD: Landlord reserves and may exercise the following rights without affecting Tenant's obligations hereunder:

A. To change the name or street address of the premises.

B. To install and maintain a sign or signs on the exterior of the premises.

C. To retain at all times pass keys to the demised premises.

D. To close the premises after regular working hours and on the legal holidays subject, however, to Tenant's right to admittance, under such reasonable regulations as Landlord may prescribe from time to time; which may include by way of example but not of limitation, that persons entering or leaving the premises identify themselves to a watchman by registration or otherwise and that said persons establish their right to enter or leave the premises.

E. To approve the weight, size and location of safes or other heavy equipment or articles, which articles may be moved in, about, or out of the premises only at such times and in such manner as Landlord shall direct and in all events, however, at Tenant's sole risk and responsibility.

F. To take any and all measures, including inspections, repairs, alterations, additions and improvements to the premises as may be necessary for the safety, protection or preservation of the premises or the Real Property or Landlord's interests, or as may be necessary or desirable in the operation of the Real Property.

Subject to Section 8 (ACCESS TO PREMISES), Landlord may enter upon the demised premises and may exercise any or all of the

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foregoing rights hereby reserved without being deemed guilty of an eviction or disturbance of Tenant's use or possession and without being liable in any manner to Tenant and without abatement of Base Rent or Rent Adjustments or affecting any of Tenant's obligations hereunder.

16. DEFAULT AND DAMAGES: If at any time during the term or any extended term thereof, of this Lease:

A. All or any part of the Base Rent, Rent Adjustments, taxes, insurance premiums, charges, expenses, or other sums payable by Tenant shall be in arrears or unpaid and shall continue unpaid for a period of thirty (30) days after written notice is given thereof by Landlord to Tenant.

B. Tenant shall fail to comply, in whole or in part, with any of the covenants, terms and conditions of this Lease other than payment of rent, and the same shall not be remedied within ninety (90) days after written notice thereof given by Landlord to Tenant, then Landlord, at its election, may (both in the case of default under 16A or B) without further or other demand and upon the giving of not less than twenty (20) days' prior written notice of such election to Tenant, terminate this Lease and this Lease shall thereupon be terminated without any right on the part of Tenant to prevent such termination by payment of any sum due or by performance of any provision of this Lease, or Landlord may elect to terminate Tenant's right to possession only, without terminating this Lease; in either of which events Tenant shall quit and peaceably surrender the demised premises and the building to Landlord, and Landlord, upon or at any time after either of such terminations, may, without further notice, re-enter thereon and repossess the same by summary proceedings or otherwise, and may dispossess Tenant and remove Tenant and all other persons and property from the demised premises without liability for any suit or action, civil or criminal, by reason thereof, and Landlord may have, hold and enjoy the demised premises and may alter the same as may be necessary effectively to utilize the premises and may have, hold and enjoy the right to

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premises and may have, hold and enjoy the right to receive all rental income therefrom without accountability to Tenant; and Landlord shall forthwith be entitled to recover from Tenant all rents and additional rents and all other sums of money or charges then matured and payable by Tenant; and (unless the statute or rule of law which governs or shall govern the proceeding in which such damages are to be proved limits or shall limit the amount of such claim capable of being so proved and allowed, in which case Landlord shall be entitled to prove as and for damages and have allowed an amount equal to the maximum allowed by or under any such statute or rule of law) Tenant shall also pay Landlord as damages for the failure to observe and perform all of the terms, covenants and conditions of this Lease to be observed or performed by Tenant, any costs and expenses incurred by Landlord in remedying Tenant's default including alteration of the premises as may be necessary effectively to utilize the premises and any deficiency between the rent and additional rent hereby reserved or covenanted to be paid and the net amount, if any, of the rents collected on account of this Lease of the demised premises for each month of the period which would otherwise have constituted the balance of the term of this Lease. In computing such damages there shall be added to the said deficiency such expenses as Landlord may incur in connection with re-letting, including, without limiting the generality of the foregoing, legal expenses, attorneys' fees, brokerage, the cost of keeping the demised premises in good order and the cost of preparing the same for re-letting. Any such damages and expenses shall be paid as and when incurred or expended by Landlord and any such deficiency shall be paid in monthly installments by Tenant on the rent day specified in this Lease and any suit brought to collect the amount of the deficiency for any month or months shall not prejudice in any way the rights of Landlord to collect the deficiency for any subsequent month by another proceeding. Landlord at its option may make such alterations, repairs and decorations in demised premises as Landlord in its sole judgment considers advisable or necessary for the purpose of re-letting demised premises, and the making of such alterations, repairs or decorations shall not operate or be construed to release Tenant from liability hereunder. Landlord shall in no event be liable in any way whatsoever for failure to

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re-let the demised premises or, in the event that demised premises are re- let, for failure to collect the rent therefor under such re-letting. No re- entry or re-letting shall be deemed to constitute acceptance of a surrender of this Lease or waiver of any of the rights reserved by Landlord hereunder, nor release Tenant from performance of any of the terms, covenants or conditions herein contained, unless Landlord shall specifically so notify Tenant in writing. Such re-letting shall not preclude Landlord from terminating this Lease as hereinabove provided at any time thereafter. Should Landlord at any time terminate this Lease for any breach, in addition to any other remedy that Landlord may have, Landlord may recover from Tenant all damages incurred by reason of such breach, including but not limited to the cost of recovering the demised premises and the worth, at the time of such termination, of the excess, if any, of the rent and charges equivalent to rent reserved in this Lease for the balance of the term hereof, or any shorter period of time, over the then reasonable rental value of the demised premises for the same period. In the event of a breach or threatened breach by Tenant of any of the terms, covenants or conditions hereof, Landlord shall have the right of injunction and the right to invoke any remedy allowed at law or in equity as if re-entry, summary proceedings and other remedies were not herein provided for. In no event shall Tenant be entitled to receive any excess of such annual rents over the sums payable by Tenant to Landlord hereunder. Nothing herein contained shall be deemed to require Landlord to postpone suit until the date when the term of this Lease would have expired if it had not been terminated under the provisions of this Lease, or under any provisions of law, or had Landlord not re-entered into or upon the demised area.

C. In the event that Landlord is privileged to re-let the demised premises or any part or parts thereof pursuant to the provisions of paragraph B of this Section 16, Landlord may do so, either in the name of Landlord or otherwise, for a term or terms which may, at Landlord's option, be less than or exceed the period which would otherwise have constituted the balance of the term of this Lease, and Landlord may grant concessions or free rent if, in the reasonable exercise of Landlord's judgment, such action is advisable.

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D. Tenant, for itself, and any and all persons claiming through or under Tenant, including its creditors, upon termination of this Lease and of the term in accordance with the terms hereof, or in the event of entry of judgment for the recovery of the possession of the demised area in any action proceeding, or if Landlord shall enter the demised premises by process of law or otherwise, hereby waives any right of redemption provided or permitted by any statute, law or decision now or hereafter in force, and does hereby waive, surrender and give up all rights or privileges which it or they may or might have under or by reason of any present or future law or decision, to redeem the demised area or for a continuation of this Lease for the term hereby demised. Tenant waives all right to trial by jury in any summary or other judicial proceeding hereafter instituted by Landlord against Tenant in respect of the demised premises.

E. Additionally, Landlord shall have any other right or remedy granted or permitted at law or in equity, to be exercised, upon the occurrence of a default under this Lease in the payment of all or any rents and additional rents payable by Tenant under the terms of this Lease (including any sums paid by Landlord which are, as provided in this Lease, to be collectible as additional rent), and the failure of Tenant to cure any such default within the ninety day and thirty day grace periods specified in this Section 16.

F. Tenant hereby expressly waives, to the extent permitted by law, service of any notice to quit possession, or of intention to re-enter under the common law or statutes or ordinances or rules or regulation of the State of Illinois or of any municipality, court, agency, or other body in or of said State.

G. The exercise by Landlord of any right or remedy against Tenant or the demised premises or improvements shall not preclude the simultaneous or successive exercise against Tenant or the demised premises or improvements of other rights or remedies, whether or not inconsistent, herein provided for or permitted by law or in equity. The failure of Landlord to

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insist in any one or more instances upon strict performance of any of the covenants or conditions of this Lease, or to exercise any option herein conferred, shall not be construed as a waiver or relinquishment for the future of any covenant, condition or option, but the same shall continue and remain in full force and effect. A receipt and acceptance of performance of any covenant or condition of this Lease, with or without knowledge of the breach of any covenant or condition of this Lease, shall not be deemed a waiver of such breach, nor shall any such acceptance of rent or other payment in a lesser amount than is hereby provided for (regardless of any endorsement on any negotiable instrument, or any statement in any letter accompanying such payment) operate or be construed either as a payment on account of the first accruing rents or other obligation hereunder then unpaid by Lessee. No waiver by Landlord of any term, covenant or condition of this Lease shall be deemed to have been made unless expressed in writing and signed by Landlord or its duly authorized agent.

H. A default in the payment of a sum of money shall not be deemed to be a default that "cannot reasonably cured in thirty days."

17. HOLDING OVER: If Tenant retains possession of the demised premises, or any part thereof, after the termination of the term or any extension thereof, by lapse of time or otherwise, on the first day of each month Tenant so retains possession Tenant shall pay Landlord the monthly Base Rent, double the rate payable for the month immediately preceding said holding over. Tenant shall pay Landlord all damages, consequential as well as direct, sustained by reason of Tenant's retention of possession. The provisions of this paragraph do not exclude Landlord's right of re-entry or any other richt hereunder.

18. SURRENDER OF POSSESSION: Upon the expiration or other termination of the term of this Lease, or Tenant's right to possession hereunder, Tenant shall quit and surrender to Landlord the premises, in good order and condition, ordinary wear excepted.

19. NOTICES: Notices shall be in writing.


A. Notices shall be effectively served by Landlord upon Tenant in the following manner:

(i) By forwarding through certified or registered mail, postage prepaid, to any or all members of the Executive Committee of the Chicago Mercantile Exchange in which case the time of mailing shall be the time of notice.

B. Notices shall be effectively served by Tenant upon Landlord in the following manner:

(i) By forwarding through certified or registered mail, postage prepaid to an officer of Landlord.

C. Additionally, any notice served by operation of either of the above two.(2) subsections of this paragraph, a copy of such notice served shall be forwarded by either certified or registered mail, postage prepaid, to Ira Marcus, of Marcus, Esses, Ham and Associates, Ltd., 39 South LaSalle Street, Chicago, Illinois 60603.

20. MISCELLANEOUS:

A. No receipt of money by Landlord from Tenant after the termination of this Lease or after the service of any notice or after the commencement of any suit, or after final judgment for possession of the demised premises shall reinstate, continue or extend the term of this Lease or affect any such notice, demand or suit.

B. No waiver of any default of Tenant or Landlord hereunder shall be implied from any omission by Landlord or Tenant to take any action on account of such default if such default persists or be repeated, and no express waiver shall affect any default other than the default specified in the express waiver and that only for the time and to the extent therein stated.

C. The words "Landlord" and "Tenant" wherever used in this Lease shall be construed to mean plural where necessary, and the necessary grammatical changes required to make the provisions hereof apply either to corporations or individuals, men or women, shall in all cases be assumed as though in each case fully expressed.

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D. Each provision hereof shall extend to and shall, as the case may require, bind and inure to the benefit of Landlord and Tenant and their respective heirs, legal representatives, successors and assigns in the event this Lease has been assigned.

E. Submission of this instrument for examination does not constitute a reservation of or option for the premises. The instrument does not become effective as a lease or otherwise until execution and delivery by both Landlord and Tenant.

F. Any amounts owed by Tenant to Landlord hereunder shall be paid within ten (10) days from the date Landlord renders statements of account therefor. If unpaid for thirty (30) days all such amounts shall bear interest from the date due until the date paid at the rate of 2% above the prime rate of interest in effect at the First National Bank of Chicago on the date of payment.

G. All riders attached to this Lease and initialed by Landlord and Tenant are hereby made a part of this Lease as though inserted in this Lease.

H. The headings of sections are for convenience only and do not limit or construe the contents of the sections.

I. If Tenant shall occupy the premises prior to the beginning of the term of this Lease with Landlord's consent, all the provisions of this Lease shall be in full force and effect as soon as Tenant occupies the premises. In the event of such prior occupancy, this Lease shall be deemed to commence at such date.

J. Landlord and Tenant agree that from time to time upon not less than thirty (30) days prior request by Landlord or Tenant, Landlord or Tenant will deliver to the other a statement in writing certifying (i) that this lease is unmodified in full force and effect (of if there have been modifications that the same is in full force and effect as modified and identifying the modifications), and (ii) that so far as the person making the certificate knows, the other is not in default under any provision of this Lease, if such be the case.

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K. Landlord's title is and always shall be paramount to the title of Tenant, and nothing herein contained shall empower Tenant to do any act which can, shall or may encumber such title unless otherwise specified in this Lease.

L. The laws of the State of Illinois shall govern the validity, performance, construction and enforcement of this Lease.

M. If any term, covenant or condition of this Lease or the application thereof to any person or circumstance shall, to any extent, be invalid or unenforceable, the remainder of this Lease, or the application of such term, covenant or condition to persons or circumstances other than those as to which it is held invalid or unenforceable, shall not be affected thereby and each term, covenant or condition of this Lease shall be valid and be enforced to the fullest extent permitted by law.

N. If a Tenant is a corporation, the persons executing this Lease on behalf of such corporation hereby represent and warrant that they have been duly authorized to execute this Lease for and on behalf of such corporation pursuant to a duly adopted resolution of its board of directors or by virtue of its bylaws.

21. QUIET ENJOYMENT: Landlord covenants and agrees that Tenant, upon paying the rental and performing Tenant's other covenants and agreements under this Lease, shall and may peacefully have and enjoy the demised premises for the term of this lease free and clear from hindrance by Landlord or any person claiming through Landlord.

22. EFFECTIVE COMMENCEMENT DATE OF LEASE: Notwithstanding the date provided herein with respect to the commencement of the term hereof, Tenant's obligation to pay rent hereunder shall not commence until Landlord shall be able to deliver possession of the premises to Tenant, and Landlord shall have notified Tenant, in writing, of the availability of the premises.

23. TENANT'S OPTION TO EXTEND THE TERM OF THIS LEASE: Provided Tenant is not in default of any of the provisions of this Lease either at the time of exercising this option to renew or at the time

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of the commencement of the following described two option periods, the term of this Lease may be extended, at the option of the Tenant, for four (4) successive periods of Seven (7) years, each such period of Seven (7) years being herein sometimes referred to as an extended term, as follows:

First extended term November 1, 1998 to October 31, 2005. Second extended term November 1, 2005 to October 31, 2012. Third extended term November 1, 2012 to October 31, 2019. Fourth extended term November 1, 2019 to October 31, 2026.

Such option to extend shall be exercised by the Tenant by giving written notice to the Landlord not less than six (6) months prior to the expiration of the then existing lease term.

Each extended term shall be upon the same covenants and conditions, with the annual base rent payable as agreed upon between the parties hereto, no less than six (6) months prior to the expiration of the then existing lease term. Any termination of this Lease during the initial term or during any extended term shall terminate all rights of extension hereunder.

IN WITNESS WHEREOF, the parties hereto have executed this Lease the date first above written.

ATTEST:                        LANDLORD:

                                       CME REAL ESTATE COMPANY, an
                                       Illinois corporation of
                                       Chicago, Illinois

By /s/                                 By /s/
   -------------------                    ----------------------
Its                                    Its

ATTEST:                                TENANT:

                                       CHICAGO MERCANTILE EXCHANGE,
                                       an Illinois not for profit
                                       corporation of Chicago, Illinois

By /s/                                 By /s/
   -------------------                    ---------------------
Its                                    Its

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AMENDMENT

Amendment made as of the 6th day of December, 1989 by and between the Chicago Mercantile Exchange ("Exchange") and the Chicago Mercantile Exchange Trust ("Trust").

WHEREAS, the Exchange and the Trust have previously entered into a rental agreement for the rental of a trading floor at 30 South Wacker Drive, Chicago, Illinois; and

WHEREAS, at the inception a basic structure of the lease arrangement was bonus rent in the event of increases in volume; and

WHEREAS, the basic facts upon which such arrangements were based considered the projected increase in volume primarily on futures contracts; and

WHEREAS, the volume conditions in the Lease Agreement have been exceeded, thus causing additional bonus payments of rent; and

WHEREAS, a substantial part of that increase in volume is due to the increase in option volume, rather than futures contracts; and

WHEREAS, the revenue derived by the Lessee from options contracts is substantially less than the revenue derived from execution of futures contracts and the parties agree that the volume provisions of the lease agreement should be stated in a term consistent with the original intention.

NOW, THEREFORE, the parties agree as follows:

1. The Lease Agreement will be amended effective as of January 1, 1989 to provide for the equalization of volume from options to volume from futures based upon a factor which will recognize the difference in clearing fee revenue derived from futures and clearing fee revenue derived from options.

2. The Lease Agreement shall be amended as follows:


Paragraph 2A(i) to read:

"Trading Volume means the actual number of futures contract trades (as defined herein) in all commodities on the CME and its divisions (excluding transactions effected on Globex) each calendar year."

3. Paragraph 2 of the Lease Agreement will add the following provision as Paragraph 2A(xi):

"Futures contract trades shall be defined to include (1) all futures contracts traded on the CME; plus (2) the Factored Option Volume of all options contracts traded on the CME as calculated by the following formula:

C
-------------------- = Factored Option Value
A
( - )

B
Where:

A = Annual volume from options
Total volume options and futures

B = Annual revenue from clearing fees on options Total annual clearing fees

C = Option value

4. The parties agree that except as provided herein, the terms set forth in the Lease Agreement shall continue; however, this amendment shall be effective as of January 1, 1989 for the purposes of determining any bonus rent volume for the year ended December 31, 1989."

Chicago Mercantile Exchange Trust

By: /s/
    ---------------------------------
    Trustee

Chicago Mercantile Exchange

By: /s/
    ----------------------------------
    SVP Admin and Finance

-2-

Exhibit 10.15 Chicago Mercantile Exchange, Inc. Registration Statement on Form S-4

Building: 10 SOUTH WACKER DRIVE

CHICAGO, ILLINOIS

LEASE

AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, AS TRUSTEE
LANDLORD

CHICAGO MERCANTILE EXCHANGE,

An Illinois not-for-profit corporation

TENANT

175,660 Square Feet on the 2nd through 10th Floors inclusive

PREMISES

March 31, 1988

DATE OF LEASE

                               Table of Contents

Section                           Title                               Page
-------                           -----                               ----
  1                   Lease of Premises and Term                        1
  2                   Base Rent                                         1
  3                   Rent Adjustments                                  1
  4                   Service                                           4
  5                   Condition of Premises                             5
  6                   Commencement of Base Rent and Rent Adjustments    5
  7                   Use of Premises                                   6
  8                   Care and Maintenance                              8
  9                   Alterations and Construction                      8
  10                  Access to Premises                                9
  11                  Untenantability                                   10
  12                  Insurance                                         10
  13                  Eminent Domain                                    11
  14                  Assignment-Subletting                             12
  15                  Waiver of Claims and Indemnity                    13
  16                  Mortgage-Ground Lease                             14
  17                  Certain Rights Reserved to Landlord               15
  18                  Holding Over                                      15
  19                  Remedies of Landlord                              16
  20                  Intentionally Omitted                             17
  21                  Surrender of Possession                           17
  22                  Notices                                           18
  23                  Intentionally Omitted                             18
  24                  Intentionally Omitted                             18
  25                  Registered Agent                                  19
  26                  Miscellaneous                                     19
  27                  Tenant Credit                                     22
  28                  Intentionally Omitted                             24
  29                  Intentionally Omitted                             24
  30                  Signage                                           25
  31                  Antenna Option                                    27
  32                  Intentionally Omitted                             30
  33                  Obligation of Landlord to Repair and Maintain     30
  34                  Secured Area (s)                                  30
  35                  Parking                                           31
  36                  Insurance of Landlord                             31
  37                  Vault                                             32
  38                  Access to Trading Floors                          32


                             continued on page (b)

                                      (a)


Continued from page (a)

Section                           Title                               Page
-------                           -----                               ----
  39                  Non-Disturbance and Attornment Agreement          33
  40                  Quiet Enjoyment                                   33
  41                  Intentionally Omitted                             33
  42                  Compliance with Laws                              33
  43                  Security Service                                  33
  44                  Renewal Option                                    34
  45                  Printing Facility                                 35
  46                  Escalator Option                                  36
  47                  Telecommunications Closet Option                  38
  48                  Expansion Options                                 40
  49                  Intentionally Omitted                             44
  50                  Right of First Offering                           44
  51                  Bathroom Facilities                               46
  52                  Elevators                                         48
  53                  Concurrent Exercise of Options                    48
  54                  Landlords Execution of Documents                  49



  Exhibit                                Title
  -------                                -----
  A-1                 Chicago Mercantile Exchange - Floor 2
  A-2                 Chicago Mercantile Exchange - Floor 3
  A-3                 Chicago Mercantile Exchange - Floor 4
  A-4                 Chicago Mercantile Exchange - Floor 5
  A-5                 Chicago Mercantile Exchange - Floor 6
  A-6                 Chicago Mercantile Exchange - Floor 7
  A-7                 Chicago Mercantile Exchange - Floor 8
  A-8                 Chicago Mercantile Exchange - Floor 9
  A-9                 Chicago Mercantile Exchange - Floor 10
  B                   JMB/MS Management Company
                          Estimated Rent Adjustment Statement for 1988
  C                   Work Supplement
  D                   Base Building Construction
  E                   Night Janitor Schedule
  F                   Non-Disturbance and Attornment Agreement
  G-1                 Intentionally Omitted
  G-2                 Intentionally Omitted
  H                   Intentionally Omitted
  I                   Chicago Mercantile Exchange - Plaza Level
  J                   Signage Location Plan
  K-1                 Chicago Mercantile Exchange - Floor 3
  K-2                 Chicago Mercantile Exchange - Floor 4
  K-3                 Chicago Mercantile Exchange - Floor 5
  K-4                 Chicago Mercantile Exchange - Floor 6
  K-5                 Chicago Mercantile Exchange - Floor 7
  L-1                 Chicago Mercantile Exchange - Floor 2
  L-2                 Chicago Mercantile Exchange - Floor 3
  L-3                 Chicago Mercantile Exchange - Floor 4
  L-4                 Chicago Mercantile Exchange - Floor 5
  L-5                 Chicago Mercantile Exchange - Floor 6
  L-6                 Chicago Mercantile Exchange - Floor 7
  L-7                 Chicago Mercantile Exchange - Floor 8
  L-8                 Chicago Mercantile Exchange - Floor 9


                             continued on page (c)

                                      (b)


Continued from page (b)

L-9                 Chicago Mercantile Exchange - Floor 10
L-10                Chicago Mercantile Exchange - Floor M1
M                   Building Standards
N-1                 Intentionally Omitted
N-2                 Intentionally Omitted
O                   Intentionally Omitted
P                   Advice
Q-1                 Chicago Mercantile Exchange - Floor 3
Q-2                 Chicago Mercantile Exchange - Floor 7

(c)

THIS LEASE, made as of the 31st day of March, 1988, between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, a national banking association of Chicago, Illinois, not individual but solely as Trustee under the provisions of a certain Trust Agreement dated June 2, 1981 and known as the Trust No. 51234 ("Landlord"), and

Chicago Mercantile Exchange, An Illinois not-for-profit corporation

("Tenant")

WITNESSETH:

1. Lease of Premises and Term. Landlord hereby leases to Tenant, and Tenant accepts the demised premises being 175,660 square feet on the 2nd through 10th floors inclusive, ("Premises"), described on attached Exhibits "A-1" through "A-9" inclusive, in the building known as 10 South Wacker Drive. Chicago, Illinois ("Building") for the term of fifteen (15) years, eight (8) months ("Term"), unless sooner terminated as provided herein, commencing April 1, 1988 ("Commencement Date") and ending November 30, 2003 ("Expiration Date"), to be occupied and used by Tenant for FN 1.1. ("Use") and no other purpose, subject to the agreements herein contained.

2. Base Rent. Subject to the Installment Credits (defined in section 27.A of this Lease), Tenant shall pay to JMB/MS Management Co. at 111 East Wacker Drive, Suite 1200, Chicago, Illinois, or to such other person or at such other place as Landlord may direct in writing, in lawful money of the United States of America, the sum of FORTY-NINE MILLION TWENTY THOUSAND TWO HUNDRED SIXTY-SIX AND 80/100 Dollars. ($ 49,020,266.80) ("Base Rent") in one hundred eighty-eight
(188) equal monthly installments of TWO HUNDRED SIXTY THOUSAND SEVEN HUNDRED FORTY-SIX AND 10/100 Dollars ($ 260,746.10) ("Installments") in advance on or before the first day of each month of the Term (subject to Section 27.A.). Base Rent shall be paid without any set-off or deduction except as expressly provided in this Lease. Unpaid Base Rent shall bear interest at the rate and at the time set forth in Section 26.F. Time is of the essence of this Lease. Landlord and Tenant agree to do and perform each and every covenant, agreement and obligation to be performed by each of them respectively hereunder.

3. Rent Adjustments. In addition to Base Rent, Tenant shall make payments in accordance with this Section 3.

A. For purposes of this Lease:
1. "Base Year" means the calendar month of April, 1988.

2. "Calculation Year" means any calendar year during the Term (commencing with the calendar year in which the Commencement Date occurs) for which a Rent Adjustment computation is being made, FN 1.2.

FN 1.1. through FN 1.2. - see page 1(a)

1

FN 1.1. - continued from Section 1

general offices of a mercantile or commodity exchange or other exchange or other general office uses.

FN 1.2. - continued from Section 3.A.2.

so that the first Calculation Year during the Term is the calendar year 1988 (the period commencing January 1, 1988 and ending December 31, 1988), the second Calculation Year during the Term is the calendar year 1989 (the period commencing January 1, 1989 and ending December 31, 1989) and so one during the Term.

1(a)


3. "Consumer Price Index" ("CPI") means the average of: a) U.S. City Averages for all Urban Consumers, All Items, of the United States Bureau of Labor Statistics: and b) U.S. City Averages for Urban Wage Earners and Clerical Workers, All Items, of the United States Bureau of Labor Statistics. The CPI FN
2.1. calendar year shall be determined by first averaging the monthly indices for each index and then averaging the two indices (All Items).

4. "Expenses" means and includes: a) those expenses paid or incurred by Landlord for maintaining, operating and repairing the Real Property, the cost of electricity, steam, water, fuel, heating, lighting, air-cooling, window cleaning, janitorial service, insurance, including, but not limited to, fire, extended coverage, liability, worker's compensation, elevator, or any other insurance carried in good faith by Landlord and applicable to the Real Property, painting, uniforms, customary management fees, supplies, sundries, sales or use taxes on supplies or services, cost of wages and salaries of all persons engaged in the operation, maintenance and repair of the Real Property, and so-called fringe benefits, including social security taxes, unemployment taxes, cost for providing coverage for disability benefits, cost of any pensions, hospitalization, welfare or retirement plans, or any other similar or like expenses incurred under the provisions of any collective bargaining agreement, or any other cost or expense which Landlord pays or incurs to provide benefits for employees so engaged in the operation, maintenance and repair of the Real Property, the charges of any independent contractor who, under contract with Landlord or its representatives, does any of the work of operating, maintaining or repairing the Real Property, legal and accounting expenses, including, but not to be limited to, such expenses as relate to seeking or obtaining reductions in and refunds of Taxes FN 2.2. or any other expense or charge, whether or not hereinbefore mentioned, which in accordance with generally accepted accounting and management principles would be considered as an expense of maintaining, operating, or repairing the Real Property: and b) FN 2.3.

5. "Real Property" means the Building, the land parcel upon which it stands and the personal property used in conjunction with both.

6. "Rent Adjustment" means any amount owed by Tenant attributable to Expenses or Taxes or increases in CPI. The Rent Adjustment shall be paid in addition to and in the same manner as Base Rent.

7. "Rentable Area of the Building" is 946,356 square feet which is the sum of the of the rentable area of all demised premises (leased or unleased) in the Building on floors designated by Landlord as office floors.

8. "Rentable Area of the Premises" is 175,660 square feet which: a) if this Lease be for an entire floor, is the area inside the center line of the exterior glass walls (except public stairs, elevator shafts, vertical piping and pipe shafts, vertical air-supply, return and exhaust shafts or ducts): plus a proportionate share of "Mechanical Spaces" (i.e. spaces housing servicing areas, equipment, and/or access corridors for: heating, ventilating, air-cooling, electrical, communications facilities, plumbing/fire protection, elevators or engineer's offices) above the lobby floor, or b) if this Lease be for less than an entire floor, is the area measured from the center line of the exterior glass walls to the center line of the corridor or other demising partitions: plus i) a proportionate share of: public areas (including corridors), toilets and janitor, electrical and communication closets on the floor housing the Premises, and ii) a proportionate share of Mechanical Spaces above the lobby floor. In either case (a or b), no deduction is made for columns of Building projections.

FN 2.1. through FN 2.3. - see pages 2(a) - 2(c)

2

FN 2.1. - continued from Section 3.A.3.

for the Base Year shall be equal to the CPI for the calendar month April, 1988 and the CPI for any subsequent

FN 2.2. - continued from Section 3.A.4.

(which Landlord shall make reasonable efforts to obtain),

FN 2.3. - continued from Section 3.A.4.

the amortized portion of the cost of any capital improvement made to the Real Property which is either (i) required by law, ordinance or governmental regulation (including, without limitation, the cost of any modification or of any system in the Building, or installation of additional systems, or modification of the Building, or compliance with fire safety requirements, to the extent any of the foregoing is required by law, ordinance or governmental regulation), or (ii) intended by Landlord to reduce Expenses ("Included Capital Items"), provided, however, that the portion of the annual amortized costs to be included in Expenses in a calendar year with respect to a capital improvement which is intended by Landlord to reduce Expenses, shall equal the lesser of: (i) such annual amortized costs or (ii) the projected annual amortized reduction in Expenses for that portion of the useful life of the capital improvement which falls within the Term (based upon the total cost savings from such capitol improvement for such period, as reasonably estimated by Landlord). Any amortization required pursuant to the immediately preceding clause (b) shall be in accordance with the generally accepted accounting principles and include interest at the Prime Rate (Section 26.F.) in effect on the date of installation if the capital improvement. If the Building is not fully occupied or if not all of the tenants in the Building use a particular service during all or a portion of any year, Landlord shall not make any adjustment of Expenses by reason of such partial occupancy or partial use, except that Landlord may make an appropriate adjustment of the cleaning and janitorial expense component of Expenses for such year employing sound accounting and management principles to determine the amount of cleaning and janitorial expenses that would have been paid or incurred by Landlord if the Building had been fully occupied and all of the tenants of the Building were cleaning and janitorial service and the amount so determined shall be deemed to have been the cleaning and janitorial expenses for such year; provided if Landlord's cleaning contractor gives Landlord a credit against the cost of cleaning and janitorial services to account for space that is not occupied and/or space that is occupied by a tenant that is not receiving cleaning and janitorial service from Landlord's cleaning contractor, then the amount of any such adjustment over actual cleaning and janitorial expenses to account for any such space shall not exceed the amount of the credit granted by Landlord's cleaning contractor with respect to such space. If any Real Property expense , though paid in one year, relates to more than one calendar year, if sound accounting principles dictate such expense shall be proportionately allocated among such related calendar years. The term "Expenses" shall not include:

(i) leasing commissions:
(ii) advertising and promotional expenditures:
(iii) cost of constructing and maintaining any leasing office located at the Building;

2(a)


(iv) amounts paid on behalf of or reimbursed to Landlord through the proceeds of insurance (provided that the amount of any reasonable deductible paid by Landlord shall be included in Expenses), the proceeds of a condemnation award of the proceeds of a recovery under a contractor's or other warranty, and amounts that would have been paid on behalf of or reimbursed to Landlord through the proceeds of insurance required pursuant to Section 36 of this Lease;

(v) Amounts billed directly to tenants (whether or not collected by Landlord) except through Rent Adjustments (escalation and Expense and Tax payments) billed to tenants (including Tenant) in the Building:

(vi) any expense in connection with services or benefits of a type which are not available to Tenant or are only available to Tenant at an additional or direct charge to Tenant, but which are provided to another tenant or occupant of the Building (whether or not such expenses are billed or collected by Landlord);

(vii) costs incurred in improving, decorating, renovating, or redecorating any leasable space in the Building (including without limitation, the cost of removing rubbish generated by any of the foregoing);

(viii) depreciation, interest, and principal payments on mortgages, and other debt costs (except to the extent that the same are attributable to Included Capital Items) and ground lease payments.

(ix) penalties for non-payment or late payment by Landlord of items included in Expenses and costs due to the violation by Landlord or its agents if any law, statute or ordinance; provided, however, that interest assessed against Landlord for late payments relating to Taxes which are being (or had been) contested in good faith in an appropriate manner by Landlord shall not be deemed a penalty and shall be included in Expenses;

(x) the costs of repairs or other restoration work to remedy damages caused by negligence of Landlord, Landlord's beneficiaries or their respective agents or employees;

(xi) wages and salaried paid to any executive employee above the level of Building manager;

(xii) any portion of any cost allocable to any building other than the Building; (xiii) accounting and other professional fees, attorney's fees, costs and disbursements and other expenses incurred in connection with negotiations or disputes with tenants or other occupants of the Building or with prospective tenants (including, without limitation, the costs of defending claims made by tenants against Landlord), or costs incurred in marketing the Building (except that attorneys' and other professionals' fees, costs and disbursements and other expenses incurred by Landlord in seeking to enforce Building rules and regulations or in seeking to enforce the non-monetary obligations of any tenant in the Building to the extent that such rules and regulations or non-monetary obligations are intended to benefit the tenant population of the Building shall be included in Expenses);

(xiv) costs of a capital nature, excepting Included Capital Items (Section 3.A.4.b.);

(xv) any expense for correction of defects on the initial construction of the Building or in the Systems (as defined in Section 9.A.) of the Building (as opposed to the costs of normal repair and maintenance and replacement [to the extent that such replacement does not constitute a capital improvement or replacement] expected with the construction materials and the Systems installed in the Building in light of their specifications);

2(b)


(xvi) overhead and profit paid to subsidiaries or affiliates of Landlord for services (except for property management fees) on or to the Building to the extent that the charges for such services exceed competitive charges for such services;

(xvii) property management fees paid for any month in excess of the greater of $15,000.00 and three percent (3%) of all rent receipts and other revenues of the Building collected during such month; and

(xviii)rental and other related expenses incurred in leasing air-conditioning systems, elevators or other equipment ordinarily considered to be of a capital nature, except (a) equipment which is used in providing janitorial and maintenance service and which is not permanently affixed to the Building, (b) equipment that is rented on a temporary basis for repairs or maintenance, and (c) plants.

2(c)


9. FN 3.1.

10. "Taxes" means real estate taxes, assessments, sewer rents, rates and charges, transit taxes, taxes based upon the receipt of rent, and any other federal, state or local government charges, general, special, ordinary or extraordinary (but not including income or franchise taxes or any other taxes imposed upon or measured by the income or profits of Landlord. Unless the same shall be imposed in lieu of real estate taxes), which may now or hereafter be levied or assessed against the Real Property. In case of special taxes or assessments which may be payable for in installments, only the amount of each installment paid during a calendar year shall be included in Taxes for that year. Taxes shall also include any personal property taxes (attributable to the year in which paid) imposed upon the furniture, fixtures, machinery, equipment, apparatus, systems and appurtenances used in connection with the Real Property for the operation thereof. The amount of Taxes attributable to any calendar year of the Term shall be in the amount of Taxes payable in such year, notwithstanding that in each case the assessments for such Taxes may have been made for a different year or years than the year in which payable.

11. "Tenants Proportion" is 18.562% and means the sum derived by dividing the Rentable Area of the Premises by the Rentable Area of the Building and multiplying by one hundred (100).

12. "Estimate" means the reasonable estimate by Landlord of CPI, Expenses and Taxes based upon prevailing economic conditions. FN 3.2.

B. FN 3.3.

FN 3.4.

C.1. Subject to Section 3.D. below, Tenant shall pay Landlord, a s a Rent Adjustment for each calendar year during the Term, Tenant's Proportion of Expenses.

2. Subject to Section 3.D. below, Tenant shall pay Landlord, as a Rent Adjustment for each calendar year during the Term, Tenant's Proportion of Taxes.

FN 3.5.

E. Tenant shall pay Landlord the Rent Adjustment Deposit I the same manner as Base Rent, on the first day of each month during the Term commencing with the Commencement Date. The Rent Adjustment Deposit shall be deposited against Rent Adjustments due for the calendar year in which the Rent Adjustment Deposits are to be paid. During the last complete calendar year or during any partial calendar year in which the Expiration Date occurs. Landlord may include in the Rent Adjustment Deposit its estimate of Rent adjustments which may not be finally determined until after the Expiration Date.

F. 1. On or before the Commencement Date, Landlord shall furnish Tenant the Estimate and the Rent Adjustment Deposit for the calendar year in which the Commencement Date occurs.

2. As soon as reasonably feasible after the expiration of each calendar year during the Term, Landlord will furnish Tenant a "Statement" FN
3.6. showing the following:

a. Expenses, Taxes, and CPI for the Calculation Year;

b. CPI - for the Base Year;

c. The amount of Rent Adjustments due Landlord for the Calculation Year, less credits for the Rent Adjustment Deposits paid. if any. FN 3.7.7 and

d. The Rent Adjustment Deposit due in the calendar year next following the Calculation Year including the amount or revised amount due for the months prior to the rendition of the Statement.

G. If the Commencement Date is not January 1st or if the Expiration Date is not December 31st for the calendar years in which such Dates occur, Rent Adjustments shall be prorated and be paid by Tenant within thirty (30) days after billing. This covenant shall survive the Expiration Date.

FN 3.1. through FN 3.7. - see pages 3 (a) - 3(e)

3

FN 3.1. - continued from subsection 3.A.9.

"Rent Adjustment Deposit" for the calendar year in which the Commencement Date occurs shall equal the Estimate of Landlord divided by twelve (12) and for each calendar year thereafter during the Term, means the sum derived by dividing the Rent Adjustments for the immediately preceding calendar year by the number of months within the Term in such immediately preceding calendar year. (e.g., Rent Adjustment Deposits for the calendar year 1990 shall equal the total amount of Rent Adjustments due for the calendar year 1989, as reflected on the Statement
[Section 3.F.2.] for the calendar year 1989, divided by twelve [12], since all twelve [12] months of the calendar year 1989 are in the Term). During the calendar year in which a Statement is rendered (which Statement shall be for the immediately preceding calendar year) and thereafter until a new Statement is rendered, Tenant shall pay as its Rent Adjustment Deposit an amount (hereinafter referred to as the "Deposit Amount") equal to the amount of the Rent Adjustments shown in the Statement divided by the number of months within the Term in the calendar year with respect to which the Statement was rendered. If the Rent Adjustment Deposits paid during such calendar year prior to the rendering of the Statement are less than or exceed the Deposit Amount, then the difference multiplied by the number of months in such calendar year for which the Rent Adjustment Deposit was paid prior to the rendering of this Statement, shall be paid to Landlord by Tenant within thirty (30) days after the Statement is rendered or shall be credited against amounts due from Tenant to Landlord under this Lease as they become due (as the case may be), provided that if the Tenant is entitled to such a credit, upon notice to Landlord, Tenant may request direct payment of the excess (if any) of the amount to be credited over the sum of the Installment of Base Rent and the Rent Adjustment Deposit next due after rendering of the Statement, in lieu of a credit for such excess amount to Tenant within thirty [30] days after receipt of such notice.

FN 3.2. - continued from subsection 3.A.12.

Tenant hereby acknowledges receipt of such Estimate attached hereto as Exhibit "B" which shall be the Estimate for the First Calculation Year.

FN 3.3. - continued after subsection 3.A.12.

13. "Holidays" means New Years Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.

14. "Force Majeure" means interruptions or delays caused by: war, insurrection, civil commotion, riots, acts of God or the enemy, governmental action, strikes, lockouts, picketing (legal or illegal), accidents, inability of Landlord to obtain fuel, supplies or materials, or any other cause or causes beyond the control of Landlord, but shall not include Landlord's lack of funds or financing.

15. "Acts of Tenants" means interruptions or delays caused by: acts, defaults or omissions of Tenant, special work, changes, alterations or additions required or made by Tenant in there layout or finish of the Premises or the Building, the delay of Tenant in submitting plans, supplying information, approving plans,

3(a)


specifications or estimates or giving authorizations or the request of Tenant for items requiring long delivery periods.

16. "30 South Wacker Building" located at 30 South Wacker Drive, Chicago, Illinois, means the tower of the building immediately south of the Building.

17. "Member(s)" means any of the following;

A. an individual; who is a member in good standing of Tenant; or

B. an entity (corporation or partnership) who:

1. has at least two (2) Chicago Mercantile Exchange seats assigned to it, or

2. has at least two (2) International Monetary Market seats assigned to it, or

3. has at least two (2) Index/Options Market seats assigned to it, or

4. has been approved by Tenant as a Class B Clearing Member.

(Note: The International Monetary Market and the Index/Options Market are divisions of Tenant.); or

C. a person or entity having access to trading rights pursuant to a license or agreement with Tenant.

18. "Trading Floors" means the trading floor, expansion floor and interstitial spaces as shown on Exhibit "F" of the agreement dated as of July 22, 1981, called The Chicago Mercantile Exchange Center Easements, Reservations, Covenants and Restrictions by and between American National Bank and Trust Company of Chicago, as Trustee under Trust No. 48268, American National Bank and Trust Company of Chicago, as Trustee under Trust No. 51234, American National Bank and Trust Company of Chicago, as Trustee under Trust No. 51235, as amended by an Amendment dated as of February 17, 1982, and a Second Amendment dated as of December 14, 1983.

19. "South Wacker Lease" means the lease dated May 11, 1981 by and between American National Bank and Trust Company of Chicago, a national banking association of Chicago, Illinois, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980 and known as Trust No. 48268 and Chicago Mercantile Exchange, an Illinois not-for-profit corporation, as such Lease has been amended heretofore and as it may be amended hereafter.

FN 3.4. - continued from subsection 3.B.

If the CPI for the Base Year is less than the CPI for any calendar year during the Term, then Tenant shall pay Landlord, as a Rent Adjustment for such calendar an amount equal to the product of the then current Rentable Area of the Premises multiplied by $7.00 (as of the date of this Lease, such amount is $1,229,620.00

3(b)


[$ 7.00 X 175,660]) multiplied by the percentage of increase by which the CPI in such calendar year exceeds the CPI for the Base Year.

FN 3.5. - continued after subsection 3.C.2.

D. Notwithstanding anything to the contrary contained in this Lease, the amount of the portion of Rent Adjustments payable by Tenant attributable to the combined amount of Expenses and Taxes (the "Expense/Tax Portion") shall be limited ("Expense/Tax Cap") to the following maximum amounts during the following periods (which shall collectively be referred to as the "Cap Period"):

1. for the first twelve calendar months of the Term of this Lease commencing on the Commencement Date (herein, such twelve calendar month period and each successive twelve calendar month period thereafter is called a "Lease Year"), the Expense/Tax Cap shall be $1,185,705.00 (6.75 x 175,660);

2. for the second Lease Year the Expense/Tax Cap shall be in the amount equal to the sum of $1,361,365.00 ($7.75 x 175,660), plus the amount of the excess (if any) of the amount of the Expense/Tax Cap for the first Lease Year over the amount of the Expense/Tax Portion payable by Tenant for such first Lease Year;

3. for the third Lease Year, the Expense/Tax Cap shall be in an amount equal to the sum of $1,537,025.00 ($8.75 x 175,660), plus the amount of the excess (if any) of the amount of the Expense/Tax Cap for the second Lease Year over the amount of the Expense/Tax Portion payable by Tenant for such second Lease Year;

provided, however, that on the event that any part of the Expense/Tax Portion otherwise payable by Tenant during either of the first two (2) Lease Years is not paid by Tenant due to the Expense/Tax Cap for such Lease Year, then such unpaid part of the Expense/Tax Portion shall be paid as Expense/Tax Portion in either or both of the second Lease Year and the third Lease Year to the extent that the Expense/Tax Portion for such second and/or third Lease Year. For example, if the Expense/Tax Portion is actually as follows:

first Lease Year                    $ 1,195,705.00
second Lease Year                     1,356,000.00
third Lease Year                      1,530,000.00

Tenant will pay the following amounts as Expense/Tax Portion:

First Lease Year                     $1,185,705.00
Second Lease Year                     1,361,365.00
Third Lease Year                      1,534,635.00

so that the amount by which the Expense/Tax Portion for the first Lease Year exceeds the Expense/Tax Cap for the first Lease Year ($10,000.00) is paid in the second Lease Year to the extent that Expense/Tax Portion for the second Lease Year is less than the Expense/Tax Cap for the second Lease Year ($5,365.00) and in the third Lease Year to the extent not paid in the second Lease Year ($4,635.00) since the Expense/Tax Cap for the third Lease Year exceeds the Expense/Tax

3(c)


Portion for such Lease Year by more than the amount of the Expense/Tax Portion remaining unpaid from the first Lease Year ($4,635.00).

There will be no Expense/Tax Cap after the third Lease Year, provided that if any part of the Expense/Tax Portion for any of the first, second or third Lease Year remains unpaid after the application of the Expense/Tax Cap for the third Lease Year, Landlord shall have no right to payment of such payment of such unpaid part and such unpaid part shall not be carried forward and shall not be due and payable in the fourth Lease Year or at any time thereafter, and provided further, that: (i) if at anytime during the Cap Period payment of the Expense/Tax Portion is totally abated pursuant to this Lease, the Cap Period shall be suspended during the continuance of the abatement and shall resume after the abatement is over and shall continue for a period of time equal to the amount of time remaining in the Cap Period prior to the abatement (and appropriate proportions shall be made in the amount of the Expense/Tax Portion and the Expense/Tax Cap in the event a portion of the Cap Period is a partial calendar year), and (ii) if at anytime during the Cap Period payment of the Expense/Tax Portion is partially abated pursuant to this Lease, in proportion to the untenantability of the Premises, the Expense/Tax Portion shall thereafter be split for purposes of application of the Expense/Tax Caps and the Cap Period, in accordance with the percentage of Expense/Tax Portion that is being abated (the "Abated Percentage"). The Cap Period and the Expense/Tax Cap shall apply as follows to the Payable Percentage of the Expense/Tax Portion: the Cap Period shall remain the same and the Expense/Tax Caps shall continue to apply to such Payable Percentage as set forth in Section 3.D.1. through 3.D.3. above, provided that such Expense/Tax Caps shall be proportionately reduced to the Payable Percentage of such Caps. There shall be no Expense/Tax Cap applicable to the Payable Percentage of the Expense/Tax Portion after the third Lease Year. The Cap Period and the Expense/Tax Cap shall apply as follows to the Abated Percentage of the Expense/Tax Portion: the Cap Period shall be suspended during the continuance of the abatement and shall resume after the abatement is over and shall continue for a period of time equal to the amount of time remaining in the Cap Period prior to the abatement (and appropriate prorations shall be made in the amount of the Expense/Tax Portion and the Expense/Tax Cap in the event a portion of the Cap Period is a partial calendar year), and the Expense/Tax Caps applicable to such Abated Percentage shall not be proportionally reduced to the Abated Percentage of such Caps. There shall be no Expense/Tax Caps applicable to the Abated Percentage of the Expense/Tax Portion after the first three Lease Years plus a period of time thereafter equal to the number of days during which such Abated Percentage was abated. The Expense/Tax Caps shall not affect or limit in any way the amount of the portion of the Rent Adjustments attributable to increases in CPI.

FN 3.6. - continued from subsection 3.F.2.

(which has been audited by a Certified Public Accounting firm, and upon written request from Tenant, Landlord shall provide Tenant with a copy of the auditor's certification of the Expense amount reflected in the Statement)

3(d)


FN 3.7. - continued from subsection 3.F.2.c.

or, if the amount of the Rent Adjustment Deposits paid with respect to such Calculation Year exceeds the amount of Rent Adjustments due, the Statement shall show the amount of the credit to be applied to amounts due from Tenant to Landlord under this Lease as they become due; provided, however, that (i) upon notice to Landlord, Tenant may request direct payment of the excess (if any) of the amount to be credited over the sum of the Installment of the Base Rent and the Rent Adjustment Deposit next due after the rendering of the Statement, in lieu of a credit for such excess amount, and Landlord, to the extent such overpayment exceeds any amounts then due from Tenant to Landlord, shall remit such excess amount to Tenant within thirty (30) days after receipt of such notice; and (ii) any such overpayment reflected on a Statement delivered after the Expiration Date shall be refunded to Tenant to the extent such overpayment exceeds any amounts then due from Tenant to Landlord.

3(e)


H. If the Bureau of Labor Statistics revises the manner in which the CPI is determined, Landlord and Tenant shall agree upon an adjustment to the revised index to produce results equivalent, as nearly as possible, to those which would be obtained if the CPI had not been so revised. If the 1982-84 average shall no longer be used as an index of 100, such charge shall constitute a revision. If the CPI becomes unavailable to the public because a publication is discontinued, or otherwise. Landlord and Tenant shall agree upon a substitute therefore, which shall be a comparable index based upon changes in the cost of living or purchasing power of the consumer dollar published by any other governmental agency or, if no such index is available, then a comparable index publishing by a major bank, other financial institution, university or recognized financial publication.

1. 1. Tenant may examine the records of Landlord supporting the Statement (including Tax b) during normal business hours within ninety (90) days after it is furnished. Unless Tenant takes written exception to any item within one hundred twenty (120) days after the furnishing of the Statement (which shall be noted on the item as "paid under protest"), such Statement shall be considered as final and accepted by Tenant. Any amount due Landlord on the Statement shall be paid by Tenant within thirty (30) days after it is furnished FN 4.1.

2. FN 4.2.

4. Service

A. Landlord, if Tenant is not in default under this Lease, shall furnish (except to the extent restricted by law or governmental regulation).

1. FN 4.3. Whenever Tenant uses heat generating machines, equipment, lighting or has excessive population density which affect the temperature otherwise maintained by the air-cooling system outside of the Premises, Landlord reserves the right to install supplementary air conditioning units in the Premises at the sole expense of Tenant. FN 4.5. Tenant shall pay Landlord charges for a condenser water riser tap-in fee, (a one time fee of $163.44 per gallon per minute), condenser water and the operation and maintenance of the supplemental air conditioning system FN 4.6.

2. Hot and cold water for use in Base Building lavatories, FN
4.7. If Tenant desires water in the Premises FN 4.8. cold water only shall be supplied from City of Chicago mains drawn through a line, meter, and fixtures installed by Tenant, at the expense of Tenant, with the consent of Landlord. Tenant shall pay Landlord as additional Base Rent, at rates fixed by Landlord FN
4.9. charges for all water furnished in the Premises to plumbing fixture other than Base Building fixtures if Tenant fails to pay the charges of Landlord for water within twenty (20) days after billing, Landlord upon ten (10 days notice, may in addition to any other remedy provided in this Lease, discontinue furnishing water. No such discontinuance shall be deemed an eviction or disturbance of the use by Tenant of the Premises or render Landlord liable for damages or relieve Tenant from any obligation under this Lease;

3. Passenger elevator service in common with Landlord and other tenants, daily from 7:00 A.M. to 6:00 P.M. (Saturdays to 1:00 P.M.), Sundays and Holidays excepted and freight elevator service in common with Landlord and other Tenants daily from 7:00 A.M. to 5:00 P.M., Saturdays, Sundays and Holidays excepted FN 4.10. Such normal elevator service, passenger or freight, if furnished at other times shall be optional with Landlord and shall never be deemed a continuing obligation, Landlord, however, shall provide limited passenger elevator service daily at times at all times such normal passenger service is not furnished. Operatorless automatic passenger and freight elevator service shall be deemed "elevator service" within the meaning of this subsection FN 4.11.

4. Building Standard janitor and cleaning services in and about the Premises in accordance with Exhibit "E", Saturday s, Sundays and Holidays excepted. Tenant shall pay Landlord, charges for additional or extraordinary janitorial or cleaning services in and about the premises FN 4.12.

FN 4.1. through FN 4.12. - see pages 4(a) - 4(c)

4

FN 4.1. - continued from Section 3.I.1.

If an audit by Tenant reveals an overcharge to Tenant in excess of five percent (5%) of the total amount reflected on the Statement, Landlord shall pay the cost of such audit.

FN 4.2. - continued from Section 3.I.2.

2. IN the event that another tenant in the Building takes a written exception to the calculation of Expenses for a particular calendar year pursuant to, and within the time permitted under such tenant's lease for doing so, and as a result an error in the calculation of Expenses for such calendar year is discovered that would affect the calculation of Tenant's Proportion of Expenses for such calendar year, Landlord shall recalculate Tenant's Proportion of Expenses and treat any over payment by Tenant like an overpayment of Rent Adjustment Deposits, as set forth in subsection 3.F.2.c. If Landlord receives a refund of Taxes or a reimbursement or refund of Expenses and if Tenant has paid a Rent Adjustment based upon an Expense and/or Tax amount that includes the amount being refunded or reimbursed, Landlord shall give Tenant a credit (or a refund if such amount exceeds more than one month's Rent Adjustment) against Tenant's Proportion of Expenses and Taxes for the Calculation Year in which such refund or reimbursement is received or obtained (as the case may be) in the amount of Tenant's Proportion of the refund or reimbursement.

FN 4.3. - continued from Section 4.A.1.

Landlord shall furnish heating and air-cooling with capacity to produce the following results effective under normal business operation, daily from 7:00
A.M. to 6:00 P.M. (Saturdays 8:00 A.M. to 1:00 P.M.), Sundays and Holidays excepted and within tolerances normal in first-class downtown Chicago highrise office buildings:

a. Heating capable of maintaining inside space conditions of not less than 70(Degrees)F when the outside air temperature is not less than minus 5(Degrees)F dry bulb; and

b. Air-cooling capable of maintaining inside space conditions of not more than 79(Degrees)F dry bulb and at a 50% (plus or minus 5%) relative humidity when the outside conditions are 95(Degrees)F dry bulb and 75(Degrees)F wet bulb.

The foregoing is based upon occupancy density on each floor of the Premises of not more than one (1) person for each one hundred twenty-five (125) square feet of floor area on such floor and a maximum diversified electric lighting and office machine load on each floor of the Premises of 5.5 watts per square foot of floor area on such floor.

Notwithstanding the foregoing, Landlord shall not be liable to Tenant for any failure to achieve or maintain the results set forth in Sections 4.A.1.a. or
4.A.1.b. above to the extent that such failure is caused by work performed by a General Contractor (defined in the Work Supplement attached to this Lease as Exhibit "C"), contractor or subcontractor retained by Tenant, materials and equipment installed by such General Contractor, contractors or subcontractors, Tenet's use of heat generating machines, equipment or lighting or an occupancy density or electric lighting or office machine load on any floor of the Premises in excess of the

4(a)


occupancy density and maximum diversified electric lighting and office machine load set forth in the foregoing paragraph.

FN 4.4. - continued from Section 4.A.1.

If Tenant uses heat generating machines, equipment, lighting or has excessive population density which affect the temperature otherwise maintained by the air-cooling systems within the Premises only, Landlord shall not have the right to install supplementary air-conditioning units in the Premises.

FN 4.5. - continued from Section 4.A.1.

(based upon the actual cost of the condenser water used in Landlord's cooling tower for the use of tenants in the Building with supplemental units [the "Supplemental Tower"], multiplied by a fraction, the numerator of which is the rated capacity in tons of Tenant's supplemental unit(s), and the denominator of which is the rated capacity in tons of the Supplemental Tower);

FN 4.6. - continued from Section 4.A.1.

(based upon the Landlord's cost of any labor, materials and supplies needed to operate and maintain the Supplemental Tower plus fifteen percent (15%) overhead and profit). The annual charge for 1987 for tenants in the Building with supplemental units is $163.29 per ton. Upon written notice to Landlord, Tenant may request heating or air-cooling during house other than those stated and Landlord shall provide such additional heating and air-cooling at the sole expense of Tenant which shall be based upon the cost of Landlord plus fifteen percent (15%) overhead and profit;

FN 4.7. - continued from Section 4.A.2.

(such Base Building lavatories are those washroom facilities located in the core of each floor of the Premises including all Base Building fixtures in such washroom facilities, which are installed as of the date of this Lease and are referred to in Exhibit "D" attached hereto). If Tenant does not occupy a full floor of the Building, such usage shall be in common with other tenants on such floor.

FN 4.8. - continued from Section 4.A.2.

or the M-1 space (defined in subsection 1.B. of the Support Space Supplement attached to this Lease) for plumbing fixtures other than Base Building fixtures,

FN 4.9. - continued from Section 4.A.2.

(which shall be equal to the cost of such water to Landlord plus fifteen percent (15%) overhead and profit),

FN 4.10. - continued from Section 4.A.3.

, provided that there shall be no charge to Tenant for freight elevator service for its initial move-in to the Premises.

4(b)


5. Window washing of all windows (inside and out) in the Premises, at such times as shall be required in the sole judgment of Landlord FN 5.1.

B. FN 5.2. All electricity used in the Premises shall be supplied by the utility company serving the Building through a separate meter and be paid for by Tenant. Landlord shall not in any way be liable or responsible to Tenant for any loss, damage or expense which Tenant may sustain or incur if either the quantity or character of electrical service is changed or is no longer available or suitable for the requirements of Tenant. If such service be discontinued, such discontinuance shall not in any way affect this Lease or the liability of Tenant hereunder or cause a diminution of Base Rent or Rent Adjustment and the same shall not be deemed to be a lessening or diminution of services within the meaning of any law, rule or regulation now or hereafter enacted, promulgated or issued. Tenant shall receive such service directly from the utility company and Landlord hereby permits its wires and conduits, to the extent available, suitable and safely capable, to be used for such purposes. Tenant shall not: 1. make alterations or additions to the electrical equipment or appliances without the consent of Landlord, or 2. use electrical current which exceeds the capacity of the feeders, risers or wiring installation to the floor of the Premises or the Premises FN 5.3. Tenant may at its option, purchase from Landlord or its agent all lamps, bulbs, ballasts and starters used in the Premises after their initial installation.

C. Landlord does not warrant that any of the services or equipment used in connection with the services stated in subsection A. and B. above will be free from interruption caused by war, insurrection, civil commotion, riots, acts of God or the enemy, governmental action, installation, wear, use, repairs, renewal, improvements, alterations, strikes, lockouts, picketing, whether legal or illegal, accidents, inability of Landlord to obtain fuel or supplies or any other causes beyond the control of Landlord. Any such interruption of service shall never be deemed an eviction or disturbance of the Use, render Landlord liable to Tenant for damages, or relieve Tenant from performance of its obligations under this Lease. FN 5.4.

FN 5.5.

5. Condition of Premises. FN 5.6. Tenant shall accept the Premises (including improvements and personalty, if any) in its condition and "as-built" configuration existing on the earlier of the date of Tenant takes possession or the Commencement Date, and possession by Tenant shall be conclusive evidence against Tenant that the Premises were in good order and satisfactory condition when Tenant took possession. FN 5.7. No promise of Landlord to alter, remodel, decorate, clean or improve the Premises or the Building and no representation respecting the condition of the Premises or the Building have been made by Landlord to Tenant, unless such are contained in this Lease.

6. Commencement of Base rent and Rent Adjustments.

A. Base Rent and Rent Adjustments shall commence (subject to subsection
C.) on the later to occur of:

1. the Commencement Date; and

2. the date upon which the Base Building Work (as described in
Section I. Of the Work Supplement) in the Premises is substantially completed by Landlord (even though minor insubstantial details of construction or mechanical adjustment remain to be done).

B. Intentionally Omitted.

C. If a holdover occurs in any space added to initial Premises (described in Section 1 of this Lease), Base Rent and Rent Adjustments shall commence upon vacation of such space by the holdover tenant. If Tenant occupies the Premises and commences doing business in the Premises prior to the Commencement date, Base Rent and Rent Adjustments shall commence on the day of occupancy on a proportional per diem basis. FN 5.8.

FN 5.1. through 5.8. - see pages 5(a) - 5(b)

5

FN 5.1. continued from Section 4.A.5.

; provided, however, that the interior and exterior of the windows shall be washed no less than three (3) times per year, weather permitting.

FN 5.2. - continued after Section 4.A.5.

6. Entrance reception service for the Building comparable to other first-class downtown Chicago highrise office buildings.

FN 5.3. - continued from Section 4.B.

Landlord hereby grants Tenant unrestricted access to the telecommunications closets and risers serving the Premises, provided that if Tenant requires access to a telecommunications closet serving the Premises and located on a floor occupied solely by a tenant other than Tenant, Tenant shall provide such tenant and Landlord with advance notice of its intent to enter such telecommunication closet and such entry shall be accessed by freight elevators only.

FN 5.4. - continued from Section 4.C.

In such circumstances, Landlord shall use reasonable efforts to promptly restore service and, in the event any interruption in utility service causes the Premises to be rendered untenantable (meaning that Tenant is unable to use such space in the normal course of its business) by Tenant for the Use for more that three (3) consecutive days after notice from Tenant to Landlord that such service has been interrupted, Base Rent and Rent Adjustments shall abate on a per diem basis for each day after such three (3) day period during which the Premises remain untenantable.

FN 5.5. - continued after Section 4.C.

D. If (i) Landlord ceases to furnish any of the services referred to in this
Section 4 as a result of a condition which affects only the Building (and does not affect office buildings in general in the Loop area of the City of Chicago),
(ii) such cessation is within the reasonable control of Landlord (that is, such cessation is not caused by Force Majeure), (iii) such cessation does not arise as a result of an act or omission of Tenant or any other person (excluding a cessation which does arise as a result of an act or omission of any person other than Tenant is such cessation is able to be cured by reasonable and prompt action on the part of Landlord but has not been so cured), and (iv) as a result of such cessation, the Premises, or any portion thereof is rendered untenantable and Tenant in fact so ceases to use such space in the manner used prior to such cessation, and (v) Landlord does not furnish such service within fifteen (15) days after notice by Tenant stating the nature of the service which is being furnished ("Service Interruption Notice"), then Tenant may, at the expense of Landlord, perform the necessary repairs to restore the service that is the subject of the Service Interruption Notice. All invoices received by Tenant for the cost of such repair shall be submitted to Landlord for payment. If Landlord, within the fifteen (15) day period referred to above, gives Tenant evidence which is satisfactory, in the reasonable judgment of Tenant, that Landlord is diligently pursuing a course which will restore the service

5(a)


which is the subject of the Service Interruption Notice and Landlord continues to diligently pursue such course, Landlord shall be deemed to be furnishing such service for purposes of this subsection 4.D. only.

FN 5.6. - continued from Section 5

Subject to (i) construction "punch list items" prepared on a floor by floor basis which must be specified by Tenant in writing to Landlord within sixty (60) days after the date of Tenant's occupancy of any floor of the Premises for the purpose of performing Initial Alterations, and (ii) latent defects of which Tenant notifies Landlord within ten (10) business days after discovery,

FN 5.7. - continued from Section 5

Landlord will diligently and continuously endeavor to complete the Base Building Work. Notwithstanding the foregoing, if a s a result of Landlord's failure to complete any item of Base Building Work, Tenant is prevented or delayed in completing the Initial Alterations, Tenant shall so notify Landlord. If Landlord does not complete such item of Base Building Work within five (5) business days after such notice (plus such additional time as may be necessary to complete such Base Building Work with diligent continuous effort), Tenant may cause such Base Building Work to be completed by Tenant's contractors at the Landlord's expense, which costs Landlord shall promptly pay upon receipt of invoices from Tenant or its contractors. Any such Base Building Work performed by Tenant's contractors shall be performed in a good and workmenlike manner in accordance with the plans for the Building and Base Building standards. Any defects in such work shall be repaired by Tenant or its contractor at Tenant's expense.

FN 5.8. - continued from Section 6.C

, it being understood that the Expense/Tax Cap, as set forth in Section 3.D, shall not commence until the Commencement Date and the Installment Credits shall not commence until April, 1998, as set forth in Section 27.

5(b)


D. FN 6.1.

7. Use of Premises. Tenant shall occupy and use the Premises during the Term for the Use and no other purpose:

A. Tenant will not make or permit to be made any use of the Premises which, directly or indirectly, is forbidden by public law, ordinance or governmental regulation or which may be dangerous to persons or property, or which may invalidate or increase the premium cost of any policy of insurance carried on the Building or covering its operations and Tenant shall not do, or permit to be done, anything upon the Premises which will be in conflict with fire insurance policies covering the Building. Tenant, at its sole expense shall comply with all rules, regulations or requirements of the Fire Department, applicable fire insurance inspection or rating bureau, or any other similar body, and shall not do, or permit anything to be done upon the Premises, or bring or keep anything thereon in violation of rules, regulations or requirements of the Fire Department, or applicable fire insurance inspection or rating bureau, or other authority having jurisdiction and then only in such quantity and manner of storage as not to increase the rate of fire insurance applicable to the Building;

B. FN 6.2.

C. Intentionally Omitted.

D. Tenant shall not obstruct, or use for storage, or for any purpose other than ingress and egress, the sidewalks, entrances, passages, courts, corridors, (outside of the Premises), vestibules, halls, elevators or stairways FN 6.3. of the Building;

E. no bicycle or other vehicle and no dog or other animal or bird shall be brought or permitted to be in the Building or on the Premises;

F. FN 6.4. Tenant shall not: 1. create or maintain a nuisance on the Premises, or 2. disturb, solicit or canvass any occupant of the Building;

G. Tenant shall not install any musical instrument or equipment in the Premises or the Building, or any antennas, aerial wires or other equipment inside or outside the Building, without obtaining the approval of Landlord. The use thereof, if permitted, shall be subject to control by Landlord to the end that others shall not be disturbed or annoyed;

H. Tenant shall not waste water by tying, wedging or otherwise fastening open any faucet;

I. except as provided in Section 34, no additional locks or similar devices shall be attached to any door. No keys for any door other than those provided by Landlord shall be made. If more than two keys for one lock are desired by Tenant, Landlord may provide the same upon payment by Tenant. Upon termination of this Lease or of the possession of Tenant, Tenant shall surrender all keys to the Premises and shall make known to Landlord the explanation of all combination locks on safes, cabinets and vaults:

FN 6.1. through FN 6.4. - see page 6(a)

6

FN 6.1. - continued from Section 6.D.

Landlord shall not incur any liability if (i) Base Building Work (defined in Exhibit "C" attached hereto) is not completed in the Building on the Commencement Date or if (ii) the premises are not ready for occupancy on the Commencement Date, and the fact that Base Building Work in the Building is not completed on the Commencement Date or that the Premises are not ready for occupancy on the Commencement Date shall not affect the validity of this Lease or the obligations of Tenant hereunder, nor shall the same be construed to delay the Commencement Date or Tenant's obligation to pay Base Rent (subject to
Section 27) and Rent Adjustments (subject to Section 3.D.), or to extend the Expiration Date or the Term; provided, however, if Landlord fails to make the Premises available to Tenant and its General Contractor for construction of the Initial Alterations immediately upon execution of this Lease (as required by
Section II.A.1. of the Work Supplement attached hereto as Exhibit "C") and such delay causes Tenant and its General Contractor to be unable to make the Premises ready for occupancy on the date the Premises would have been ready for occupancy absent of such delay, then Base Rent and Rent Adjustments shall abate for a period of time equal to the number of days in the Delay Period. For purposes of this Section 6.D., the term "Delay Period" means the period of time commencing upon the day after the execution of this Lease and ending on the date Landlord makes the Premises available to Tenant and its General Contractor for construction of the Initial Alterations, plus any period thereafter that the Landlord, without cause, revokes or withholds the License or the availability of the Premises to Tenant and its General Contractor. The delivery by Landlord to Tenant of a fully executed copy of this Lease shall constitute permission for Tenant and its General Contractor to enter into the Premises for construction of Initial Alterations. No further documentation or notice shall be required from Landlord to Evidence such permission.

FN 6.2. - continued from Section 7.B.

any sign installed in the Premises shall be installed at the expense of Tenant. Landlord may grant or withhold its approval in its sole discretion if such sign is visible from the exterior of the Building. Landlord may grant or withhold its approval in its reasonable discretion if such sign is located on a floor on which Tenant is not the sole tenant and is visible from the exterior of the Premises.

FN 6.3. - continued from Section 7.D.

and Tenant shall not obstruct, or use for storage, or for any purpose other than ingress and egress, the corridors or stairways located within the Premises if such obstruction or use would violate Section 7.A. above.

FN 6.4. - continued from Section 7.F.

Tenant shall not cause or permit any noise, odor or litter, which is materially disruptive of the use or enjoyment of (i) the premises of another tenant or (ii) the common areas of the Building by Landlord or other occupants of the Building, to emanate from the Premises. Tenant shall use reasonable efforts to ensure that its customers, clients, invitees and guests do not violate the prohibition set forth in the immediately preceding sentence.

6(a)


J. Tenet accepts full responsibility for: 1. protecting the Premises from theft, robbery and pilferage, 2. keeping the Premises secure, and 3. locking the doors in and to the Premises , Any damage resulting from neglect of this subsection shall be paid for by Tenant. All property belonging to Tenant, or any person in the Premises, which is in the Building or the Premises, shall be there at the risk of Tenant or other person only, and subject to Section 15.D. Landlord, its beneficiaries, Owner and the partners of Owner and their respective agents and employees shall not be liable for damages thereto or theft of misappropriation thereof. Subject to Section 15.D. Tenant shall indemnify and hold Landlord, its beneficiaries. Owner and the partners of Owner and their respective agents and employees harmless from any claims arising out of the above, including subrogation claims by the insurance carrier of Tenant;

K. if Tenant desires telegraphic, telephonic, burglar alarm or signal service, Landlord will, upon request, direct where and how connections and all wiring for such service shall be introduced and run. Without such directions, no boring, cutting or installation of wires or cables I permitted. FN 7.1.

L. shades, draperies or other form of inside window covering must be of such shape, color and material as approved by Landlord. The decision of Landlord to refuse such approval shall be conclusive;

M. Tenant shall not overload any floor. Safes, furniture and all large articles shall be brought through the Building and into the Premises at such times and in such manner as Landlord shall permit and at the sole risk and responsibility of Tenant. Tenant shall issue passes listing all furniture, equipment and similar articles to be removed from the Building, before Building employees will permit any article to be removed FN 7.2.

N. unless Landlord gives consent, Tenant shall not install or operate any steam or internal combustion engine, boiler, machinery, refrigeration or heating device or air-conditioning apparatus in or about the Premises, or carry on any mechanical business therein, or use the Premises for housing accommodations or lodging or sleeping purposes, or do any cooking therein or install or permit the installation of any vending machines, or use any illumination other than electric light, or use or permit to be brought into the Building any flammable oils or fluids such as gasoline, kerosene, naphtha and benzene, or any explosive or other articles hazardous to persons or property. Should Landlord grant consent, the installation, operation and maintenance expenses of Tenet for any such items shall include, among other charges as additional Base Rent at rates fixed by Landlord, if air-conditioning apparatus is being installed, charges for a condenser water riser tap-in fee and condenser water based upon the rated capacity in tons of the unit FN 7.3.

O. FN 7.4. Tenant shall not place or allow anything to be against or near the glass or partitions or doors of the Premises which may diminish the light in, or be unsightly from, public halls or corridors;

P. Tenant shall not install any equipment in the Premise which uses a substantial amount of electricity without the consent of the Landlord. FN 7.5. The consent of Landlord to the installation of electric equipment shall not relieve Tenant from the obligation not to use more electricity that such safe capacity;

Q. Tenant may not install carpet, padding, or carpet by means of a mastic, glue or cement without the consent of Landlord;

R. Tenant shall not conduct any auction, fire or "going out of business", or bankruptcy sales in or from the Premises;

S. Tenant shall not lower and adjust the venetian blinds on the windows in the Premises is such lowering and adjusting reduces the sun load;

T. in addition to all other liabilities for breach of any covenant of this section 7, Tenant shall pay to Landlord all damages caused by such breach and shall also pay to Landlord as additional Base Rent an amount equal to any increase in insurance premium or premiums caused by such breach. Any violation of this section 7 may

FN 7.1. through FN 7.5. - see page 7(a)

7

FN 7.1. - continued from section 7.K.

Tenant may, at its expense, furnish to its Members, communications services from a centralized switch, or a group of switches. Said communication services may be directly wired from the switch location to Members' premises via vertical and/or horizontal raceways (a means for wire and/or cable to be distributed from one point to another). The location of the switch (or switches) and the routing and location of the raceways shall be approved by Landlord. Landlord and Tenant shall cooperate with each other so that the integrity of the System (Section
9.A.) of the Building is not disturbed;

FN 7.2. - continued from Section 7.M.

, provided that Landlord shall not be responsible for determining the authenticity of such passes;

FN 7.3. - continued from Section 7.N.

, which charges shall be at the rates set forth in Section 4.A.1. Tenant is granted permission to install a kitchen which may include a refrigerator, vending machines and microwave ovens for use by employees and invitees of Tenant only. Such installation shall: 1. include: a. required ducts, vents and/or flues, b. an exhaust stack tap-in charge based upon the proportionate C.F.M. usage of Tenant, and c. a water meter, if Landlord in its sole judgment determines such is warranted, and 2. be at the sole expense of Tenant, provided, however, that if such kitchen is part of the Initial Alterations (as defined in
Section II.A. of the Work Supplement attached hereto as Exhibit "C"), Tenant may, at its discretion, apply a portion of its Work Credit (defined in Section 27.B. of this Lease) against the cost of such installation in accordance with
Section 27;

FN 7.4. - continued from Section 7.0.

on multi-tenant floors or the Lobby Space (defined in the Support Space Supplement to this Lease),

FN 7.5. - continued from Section 7.P.

Landlord represents that the maximum diversified electrical capacity available for utilization is 5.5 watts per rentable square foot of floor area on each floor within the Premises. If additional capacity in the Premises is required and possible to provide, in Landlord's judgment taking into account the capacity of the electric wiring in the Building and the Premises and the needs of other tenants in the Building, it shall be provided at the sole expense of Tenant. Nothing in this Section 7.P. shall affect in any way Tenants obligation to pay for all Alterations (including without limitation, all Alterations to electrical system in the Premises) and otherwise comply with Section 9 with respect to all Alterations.

7(a)


be restrained by injunction. Tenant shall be liable to Landlord for all damages resulting from violation of any of the provisions of this Section 7. Landlord shall have the right to make such reasonable rules and regulations as Landlord or its agent may from time to time adopt on such reasonable notice to be given as Landlord may elect. FN 8.1. Nothing in this Lease shall be construed to impose upon Landlord any duty or obligation to enforce provisions of this
Section 7 or any rules and regulations hereafter adopted, or the terms, covenants or conditions of any other lease as against any other tenant, and Landlord shall not be liable to Tenant for violation of the same by any other tenant, its servants, employees, agents, visitors or licensees.

8. Care and Maintenance. Subject to the provisions of Sections 4.A.4, 11,13 and 33. Tenant, at its sole expense, shall keep the Premises FN 8.2. in good order, condition and repair during the Term, FN 8.3. If Tenant does not make repairs promptly and adequately, Landlord may, but need not, make repairs and Tenants shall promptly pay the expense thereof. Tenant shall pay Landlord for overtime and for any other expenses incurred if repairs, alterations, decorating or other work in the Premises, at the request of Tenant, are not made during ordinary business hours.

9. Alterations and Construction.

A. FN 8.4. such as, but not limited to, painting, decorating, erecting partitions, making alterations or additions, nailing, boring or screwing into the ceilings, walls or floors without the consent of the Landlord FN 8.5. For each Alteration, Tenant shall furnish Landlord: 1. plans and specifications for the Alterations (which Tenant warrants are in conformance with all applicable laws and consistent in all respects with the aesthetics and the following "Systems" of the Building: electrical, heating, ventilating, air-cooling, plumbing/fire protection and structural) prepared at the expense of Tenant, by the Building engineers, or at the discretion of Landlord, other engineers acceptable to Landlord, 2. affidavits from such engineers stating that the Alterations will not in any way adversely affect any Systems in the Building, 3. names and address of contractors ("Contractors") and subcontractors ("Subcontractors"), 4. copies of contracts with Contractors and Subcontractors which shall provide, among other things, that no changes, amendments, extras or additional work FN 8.6. are permitted without the consent of Landlord FN 8.7. Landlord reserves the right to deny any Contractor or Subcontractor entry to the Building but the failure of Landlord to exercise this right shall not be deemed an approval of either the financial stability or quality of workmanship of any such Contractor or Subcontractor.

B. If Landlord grants such consent or if Landlord consent is not needed pursuant to the guidelines set forth in Section 9.A., all Alterations shall be performed at the sole expense of Tenant, in a workmanlike manner and materials furnished shall be of a like quality to those in the Building. If the Alterations involve any Systems, such shall be performed under the supervision of Landlord and by contractors approved by Landlord. If the Alterations do not involve Systems, such shall be performed under the supervision of Landlord. Regardless of whether Landlord's consent is required, before the commencement of the Alterations or delivery of any materials onto the Premises or into the Building. Tenant shall furnish Landlord: FN 8.8. 1. sworn Contractor affidavits listing all subcontractors with suppliers of materials and/or labor, with whom Contractors have contractual relations for the Alterations, and setting forth a summary of such contractual relationships. 2. Subcontractor affidavits, 3. certificates of insurance from all Contractors and Subcontractors performing labor or furnishing materials, insuring against any and all claims, costs, damages, liabilities and expenses which may arise in connection with the Alterations, and 4. such other documents as may be reasonably requested by Landlord. The certificates of insurance required must evidence coverage in amounts and from companies satisfactory to Landlord and may be cancelable only with ten (10) days advance notice to Landlord. If Landlord consents or supervises, such shall not be deemed a warranty as to the adequacy of the design or workmanship or quality of the materials and Landlord hereby disavows any responsibility and/or liability for such. Additionally, under no circumstances shall Landlord have any responsibility to repair or maintain any portion of the Alterations which either does not function or ceases to function.

FN 8.1. through FN 8.8. - see pages 8(a) through 8(b)

8

FN 8.1. - continued from Section 7.T.

Landlord will make reasonable efforts to enforce all such rules and regulations uniformly. In the event of a conflict between such rules and regulations and this Lease, this Lease shall control.

FN 8.2. - continued from Section 8

(excluding the Systems [Section 9.A.], structural elements of the Building and glass of the Building which Landlord agrees to maintain pursuant to Section 33).

FN 8.3. - continued from Section 8

ordinary wear and tear and damage by fire or other casualty excepted, and Tenant shall have no obligation to repair any damage caused by negligence of Landlord, its agents, servants or employees, which damage shall be repaired by Landlord, at its expense.

FN 8.4. - continued from Section 9.A.

Tenant may do work ("Alterations", such defined term shall collectively refer to the Initial Alterations [defined in the Work Supplement attached hereto as Exhibit "C"] and any subsequent Alterations) in the Premises,

FN 8.5. - continued from Section 9.A.

If the Alterations:

(i) are of a cosmetic nature such as painting, wallpapering, hanging pictures, millwork and carpeting (Alterations of a cosmetic nature are called "Cosmetic Alterations"), and are not visible from the exterior of the Premises or the Building, or

(ii) do not affect the Building Systems or structure, and are not visible from the exterior of the Premises or the Building,

provided that even if Landlord's consent to an Alteration is not required, Tenant shall still comply with this section 9, except that Tenant need not comply with Sections 9.A.1., 9.A.2. and 9.B.1. (only) to perform the following Cosmetic Alterations: painting, wallpapering, hanging pictures, millwork and carpeting.

If the Alterations:

(iii) affect the Building Systems or structure, or

(iv) are visible from the exterior of the Premises or the Building;

the consent of the Landlord is required. Such consent shall not be unreasonably withheld if the Alterations affect the Building Systems or structure or are visible only from the exterior of the Premises and are not visible from the exterior of the Building; if, however, the Alterations affect the Building Systems or structure of the

8(a)


Building or are Cosmetic Alterations and in addition, such Alterations are visible from the exterior of the Building, the consent of the Landlord shall be within its sole and absolute discretion and the decision of Landlord to refuse such consent shall be conclusive.

FN 8.6. - continued from Section 9.A.

that is material or would affect the Building Systems or structure or result in a change that would be visible from the exterior of the Premises or the Building

FN 8.7. - continued from Section 9.A.

, and Tenant agrees that it will not make or authorize any such changes, amendments, extras or additional work without Landlord's consent. Tenant shall provide Landlord with written notice of all changes, amendments, extras or additional work that do not require Landlord's consent as soon as practical but not more than five (5) business days after Tenant is aware that such change, amendment, extras or additional work will be included in an Alteration. Tenant's notice shall contain a description of the change, amendment, extras or additional work and cost thereof.

FN 8.8. - continued from Section 9.B.

1. necessary permits; provided, however, if Tenant or its Contractor for an Alteration cannot promptly obtain a building permit from the City of Chicago to perform such Alteration in the Premises (including, without limitation, any of the Initial Alterations) Tenant may, at its option, commence construction of such Alteration and obtain delivery of materials therefore prior to obtaining the building permit if Tenant delivers to Landlord, prior to commencement of construction or delivery of materials, a "blue card" or substitute therefore issued by the City of Chicago as evidence of receipt of Tenant's plans for the Alteration and any other documentation customarily required by owners of first-class highrise office buildings in downtown Chicago prior to allowing a tenant to perform such alteration in its premises. Tenant shall, in any event, deliver permit to Landlord after it is obtained. In the event that Tenant commences construction of an Alteration or obtains delivery of materials therefore prior to obtaining a building permit, pursuant to this Section 9.B.1., Tenant hereby agrees to indemnify and save all of the Landlord related Parties harmless against any and all claims, demands, liabilities, costs and expenses (including, without limitation, reasonable attorney's fees for the defense thereof) arising from or connected in any way with (i) the commencement or completion of construction of an Alteration or the delivery of materials therefore to the Premises or Building prior to the obtaining of a building permit with respect to such Alteration, or (ii) Landlord granting permission to Tenant, pursuant to this Section 9.B.1., to commence construction of an Alteration and obtain delivery of materials prior to Tenant obtaining a building permit.

8(b)


C. Intentionally Omitted.

D. Upon completion of the Alterations, and prior to final payment. Tenant shall obtain the written approval of Landlord for the quality of the Alterations and furnish Landlord with: 1. Tenant, Contractors, and architectural completion affidavits. 2. full and final waivers of lien, 3. receipted bills covering all labor and materials expended and used. 4. other appropriate documents evidencing completion of the Alterations and 5. as-built plans of the Alterations.

E. FN 9.1.

F. Intentionally Omitted.

G. Tenant shall procure, or cause to be procured, and pay for all permits, licenses, approvals, certificates and authorizations necessary to the prosecution and completion of the Alterations. All Alterations shall be done in strict accordance with all laws, ordinances, rules, regulations and requirements of any applicable board of underwriters or fire rating bureau and all municipal, state, federal and other authorities having jurisdiction. Where drawings and specifications conflict with the law, the law is to be followed. Tenant shall promptly notify the respective departments or official bodies when the Alterations are ready for inspection and shall, at once, do all work required to remove any violations or to comply with such inspections, without additional charge to Landlord. Tenant shall perform, or cause to be performed, all work necessary to obtain approvals from authorities mentioned above without additional cost to Landlord.

H. Tenant agrees to reimburse Landlord for all sums expended for examination and approval of the architectural and mechanical plans and specifications.

I. Tenant agrees that Alterations shall be performed so as not to cause or create any jurisdictional or other labor disputes, and in the event such disputes occur, Tenant shall immediately do whatever is necessary to resolve such disputes, at no expense to Landlord.

J. FN 9.2. Tenant hereby agrees to indemnify and hold Landlord, its beneficiaries. Owner and partners of Owner and their respective agents and employees harmless from any and all liabilities of every kind and description, including reasonable attorney's fees which may arise out of or be connected in any way with the Alterations. Any mechanic's lien (or any notice preliminary to lien) filed against the Premises, or the Real Property, for the Alterations or materials claimed to have been furnished to Tenant shall either 1. be discharged of record (or paid if a notice be served) by Tenant within ten (10) days after filing (or service) at the expense of Tenant, FN 9.3.

K. All additions, decorations, FN 9.4. hardware, non-trade fixtures and all improvements, in or upon the Premises FN 9.4. whether placed there by Tenant or Landlord, shall , unless Landlord requests their removal as provided below, become the property of Landlord and shall remain upon the Premise at the termination of this Lease by lapse of time or otherwise without compensation, allowance or credit to Tenant. If, upon the request of Landlord, Tenant does not remove said additions, decorations, fixtures, hardware, non-trade fixtures and improvements, Landlord may remove them FN 9.5.

10. Access to Premises. Tenant shall permit Landlord to erect, use and maintain pipes, ducts, wiring and conduits in and through the Premises FN 9.6. Landlord or agents of Landlord shall have the right to enter upon the Premises, to inspect the same, to perform janitorial and cleaning services and to make such repairs,

FN 9.1. through FN 9.6. - see page 9(a) - 9(b)

9

FN 9.1. - continued from Section 9.E.

E. Tenant shall reimburse Landlord for use of elevators and/or hoists during the Alterations for only the actual costs incurred by Landlord in providing for such use. Landlord and Tenant shall cooperate with each other in scheduling such use and whenever possible during normal business hours (or non-business hours, if required) in the course of the Alterations.

FN 9.9. - continued from Section 9.J.

Except for Alterations performed by Metropolitan Structures Construction Division, as General Contractor,

FN 9.3. - continued from Section 9.J.

or 2. contested by Tenant, so long as (i) Tenant , at Tenant's expense, obtains title insurance insuring over the notice of lien or the lien from Chicago Title and Trust Company, or another local, reputable title company acceptable to Landlord and Tenant, in favor of Landlord and any mortgagee or ground lessor with an interest in the Building, or provides Landlord with alternative security satisfactory to Landlord insuring over any possible loss or expense which may arise from non-discharge of such lien; provided that Tenant shall not be required to provide such title insurance or alternative security, unless the filing of a mechanics lien (or any notice preliminary to the lien) is considered an event of default under the terms of any loan secured by the Building existing as of the date of such filing or at some time during the period beginning when such lien is filed (or notice is delivered) and ending upon discharge or payment thereof, Landlord is making (or is entitled to make) draws on a loan secured by the Building, or is otherwise required by the terms of any financial documents to provide such title insurance or alternative security, or is or commences the refinancing of a loan secured by the Building or is in the process of or commences the process of selling, transferring, pledging or hypothecating the beneficial interest in Landlord, the Real Property, the Building or any interest in any thereof (provided further, that if the granting of this right in any way damages Landlord, Tenant shall immediately provide title insurance or alternative security and indemnify Landlord), and (ii) such contest is in good faith and by appropriate proceedings which operate to stay the enforcement of such mechanic's lien. Tenant shall, promptly after the final determination of such contest, pay or discharge any decision or judgment rendered, together with all costs, charges, interest and penalties incurred or imposed or assessed in connection with such contest.

FN 9.4. - continued from Section 9.K.

(other than personal property),

FN 9.5. - continued from Section 9.K.

; provided, however, that Landlord shall notify Tenant on or before the time it grants approval as to any plans and specifications submitted by Tenant for an Alteration as to whether Landlord will require that Tenant remove, at the termination of this Lease, such Alteration or any particular portion thereof.

9(a)


Notwithstanding the foregoing, Landlord shall have to the right to require Tenant to remove any vault or stairway installed in the Premises, regardless of whether Landlord timely notified Tenant that it would require removal. Landlord shall not have the right to retain any of Tenant's personal property or equipment (including computers and supplemental air conditioning units).

FN 9.6. - continued from Section 10

Provided, however, that such pipes, ducts, wiring and conduits (and the installation thereof in and through the Premises): a) are concealed; and b) may not diminish or alter the configuration of the Premises (unless required by law) without the consent of Tenant, which shall not be unreasonable withheld or delayed; and c) shall not interfere with installations previously made by Tenant or the Use.

9(b)


alterations, improvements or additions to the Premises or the Building as Landlord may deem necessary and Landlord be allowed to take all materials into and upon the Premises that may be required therefore without the same constituting an eviction of Tenant in whole or in part and the Base Rent and/or Rent Adjustments shall in no way abate (except as provided in Section 11) while said repairs, alterations, improvements, or additions are being made, by reason of loss or interruption of business of Tenant, or otherwise FN 10.1. If Tenant shall not be personally present to open and permit an entry into the Premises, at any time, when for any reason an entry therein shall be necessary or permissible, Landlord or agents of Landlord may enter the same by a master key, or may forcibly enter the same, without rendering Landlord or such agents liable therefore (if during such entry Landlord or agents of Landlord shall accord reasonable care to the property of Tenant) and without in any manner affecting the obligations and covenants of this Lease. Nothing herein contained, however, shall be deemed or construed to impose upon Landlord any obligations, responsibility or liability whatsoever, for the care, supervision or repair of the Building or any part thereof, other than as herein provided. Landlord shall also have the right at any time, without the same constituting an actual or constructive eviction and without incurring any liability to Tenant therefore, to construct and lease kiosks on any part of the building, other than the Premises (including, but not limited to, exterior and interior public areas), to change the arrangement and/or location of entrances or passageways, doors and doorways, and corridors, elevators, stairs, toilets or other public parts of the Building, and to close entrances, doors, corridors, elevators and other facilities FN 10.2. Except as provided in Section 15.D., Landlord shall not be liable to Tenant for any expense, injury, loss or damage resulting from work done in or upon, or the use of, any adjacent or nearby building, land, street or alley.

11. Untenantability.

A. If the Premises or the Building are untenantable by fire or other casualty, FN 10.3. Landlord may elect to:

1. terminate this Lease as of the date of the fire or casualty by notice to Tenant within one hundred twenty (120) days after date, or

2. proceed with reasonable diligence to repair, restore or rehabilitate the Building or the Premises at the expense of Landlord, in which latter event this Lease shall not terminate FN 10.4.

B. In the event this Lease is not terminated pursuant to this section, Base Rent and Rent Adjustments shall abate on a per diem basis during the period of untenantability FN 10.5. IN the event of the termination of this Lease pursuant to this section, Base Rent and Rent Adjustments shall be apportioned on a per diem basis and paid to the date of the fire or other casualty* In the event the Premises are partially damaged by fire or other casualty but not made wholly untenantable, then Landlord shall, except during the last year of the Term proceed with reasonable diligence to repair and restore the Premises and Base Rent and Rent Adjustments shall abate in proportion to the FN 10.6. dunning the period of untenantability. If a portion of the premises are made untenantable as aforesaid during the last year of the Term as it may be extended from time to time. Landlord or Tenant shall have the right to terminate this Lease as of the date of the fire or other casualty by giving notice thereof to the other within thirty (30) days after the date of the fire or other casualty, in which event Base Rent and Rent Adjustments shall be apportioned on a per diem basis and paid to the date of such fire or other casualty*.

12. Insurance.

A. Landlord and Tenant agree to have any and all fire, extended coverage or any and all material damage insurance which may be carried endorsed with the following subrogation clause: "This insurance shall not be invalidated should the insured waive in writing prior to a loss any or all right to recovery against any party for loss occurring to the property described herein"; and Landlord and Tenant hereby waive all claims for recovery from the other for the loss or damage to any of its property insured under valid and collectible

FN 10.1. through FN 10.6. - see pages 10(a) - 10 (b)

* with respect to any portion of the Premises that is rendered untenantable and to the date of the termination of this Lease with respect to the portion that is not rendered untenantable and which Tenant continues to occupy after the date of such fire or casualty.

10

FN 10.1. - continued from Section 10

; provided, however, that excepting emergency situations as determined by Landlord, Landlord shall exercise reasonable efforts:

1) not to interfere with the conduct of the business of Tenant on the Premises;

2) to effect such entry during non-business hours; and

3) to give Tenant advance notice of any entry, provided that such notice by Landlord may verbal (rather than written) if in the judgment of Landlord, such verbal notice is sufficient;

and provided further, that Landlord shall not use the Premises as a storage area for equipment and supplies for work being performed by Landlord in the Building or in the Premises.

Notwithstanding anything contained in this Section 10 to the contrary, in the event access by Landlord into the Premises pursuant to this Section 10 renders the Premises or a portion thereof untenantable by Tenant for the Use (excepting untenantability resulting from fire or other casualty) for more than five (5) consecutive business days after notice from Tenant to Landlord that Landlord's access has rendered the Premises or a portion thereof untenantable, then Base Rent and Rent Adjustments shall abate on a per diem basis for each day after such five (5) day period that the Premises or such portion remain untenantable, provided that the abatement shall be in proportion to the portion of the Premises which is rendered untenantable.

FN 10.2. - continued from Section 10

so long as the same does not materially alter or diminish Tenant's access to the Premises.

FN 10.3. - continued from Section 11.A.

and if no portion of the Trading Floors has been made untenantable or if all or a portion of the Trading Floors has been made untenantable, if the owner of the Trading Floors provides Landlord with notice within ninety (90) days after the Trading Floors have been made untenantable of its commitment to repair, restore or rehabilitate the Trading Floors, then this Lease shall not terminate. Landlord, at its expense, shall proceed with all due diligence to repair, restore or rehabilitate all damaged portions of the exterior of the Building to the extent necessary to restore the Premises, all other areas of the Building serving the Premises or providing ingress to or egress therefrom (including, without limitation, the parking garage, Building lobbies and all areas occupied by equipment or other facilities serving the Premises or the Trading Floors). If, however, the Premises or the Building and a portion of the Trading Floors are made untenantable by fire or other casualty and if the owner of the Trading Floors does not so notify Landlord within such ninety (90) day period of its commitment to repair, restore or rehabilitate the Trading Floors,

10(a)


FN 10.4. - continued from Section 11.A.2.

; provided, however, if Landlord fails to repair, restore or rehabilitate the Premises within two hundred seventy (270) days after the aforementioned one hundred twenty (120) days, then Tenant shall have the right to terminate this Lease as of the date of the fire or casualty by serving notice on Landlord within ten (10) days after the expiration of the said two hundred seventy (270) day period, provided further, however, that if Landlord fails to so repair, restore or rehabilitate within said two hundred seventy (270) day period and such failure is the result of delays caused by Force Majeure or Acts of Tenant, the two hundred seventy (270) day period shall be deemed extended for a period of time equal to the total of all such delays.

FN 10.5. - continued from Section 11.B.

, except in cases of fire or other casualty caused by the negligence of Tenant or a Tenant Related Party (defined in Section 15.E.2.) to the extent that Landlord's rent loss insurance does not cover such Base Rent or Rent Adjustments; provided, however, that id Landlord maintains rent loss insurance coverage in an amount less than that customarily carried by prudent owners of similar first-class highrise office buildings in the downtown Chicago area (the amount customarily carried from time to time shall be called "Customary Rent Loss Coverage") then for purposes of determining pursuant to this Section 11.B. whether Landlord's rent loss insurance covers Tenant's Base Rent and Rent Adjustments, Landlord shall be deemed to maintain Customary Rent Loss Coverage, and provided further, that if Landlord does not complete restoration and repair work within the time period during which Landlord's rent loss insurance covers Tenant's Base Rent and Rent Adjustments (the "Rent Loss Coverage Period") by reason of Landlord's failure to perform such restoration and repair with reasonable diligence (as opposed to by reason of Force Majeure or Acts of Tenant) (provided that reasonable diligence shall not require that Landlord or its contractors work overtime hours), then for purposes of determining pursuant to this Section 11.B. whether Landlord's rent loss insurance covers Tenant's Base Rent and Rent Adjustments, the Rent Loss Coverage Period shall be deemed to be extended by a period equal to the number of days from the date of expiration of the Rent Loss Coverage Period to the date of completion of the restoration and repair, less the number of days that Landlord was delayed in completing repair and restoration by reason of Force Majeure or Acts of tenant.

FN 10.6. - continued from Section 11.B.

area of the Premises that is untenantable and/or not reasonably usable by Tenant by reason of damage to the balance of the Premises

10(b)


insurance policies to the extent of any recovery collected under such insurance FN 11.1.

B. 1. During the Term, Tenant, at its sole expense, shall obtain and keep in force the following insurance: Comprehensive general liability written on an "occurrence" or "claims made" basis, including personal and bodily injury, broad form property damage, owner's protective coverage and contractual liability, limits not less than $1,000,000.00 FN 11.2. and

2. all such insurance policies shall;

a. name Tenant as named insured and name Landlord and the mortgages of the Building (and, if applicable, ground or primary lessors) as additional insureds as their respective interests may appear; and

b. be insured by insurers and in form satisfactory to Landlord.

3. Tenant shall deliver certificates of insurance or certified copies of each policy to Landlord on or before ten (10) days prior to the date Tenant takes possession of any part of the Premises.

4. All policies shall contain an undertaking by the insurers to notify Landlord and the mortgages of Landlord (and, if applicable, ground or primary lessors) in writing, by Registered or Certified U.S. Mail, return receipt requested, not less than fifteen (15) days before any material change, reduction in coverage, cancellation or termination.

13. Eminent Domain.

A. In the event the entire Building, Real Property or Premises shall be lawfully condemned or taken in any manner for any public or quasi-public use, this Lease and the Term and estate hereby granted shall forthwith cease and terminate as of the date of the taking of possession by the condemning authority. In the event that only a part of the Premises shall be so condemned or taken then, effective as of the date of the taking of possession by the condemning authority. Base Rent and Rent Adjustments shall abate in an amount apportioned according to the area of the Premises so condemned or taken. If only part of the Building or Real Property shall be so condemned or taken FN 11.3. then 1. Landlord (whether or not a material portion of the Premises be affected) may, at the option of Landlord, terminate this Lease and the Term and estate hereby granted as of the date of such taking of possession by the condemning authority by notifying Tenant of such Termination within sixty (60) days following the date on which Landlord shall have received notice of the taking of possession by the condemning authority, or 2. if such condemnation or taking shall be of a material (more than twenty (20%) of the Rentable Area part of the Premises or of a substantial part of the means of access of access thereto, Tenant may, at the option of Tenant, by delivery of notice to Landlord within sixty (60) days following the date on which Tenant shall have received notice of the taking of possession by the condemning authority, terminate this Lease and the Term and estate hereby granted as of the date of the taking of possession by the condemning authority, or if 3. if neither Landlord nor Tenant elects to terminate this Lease, as aforesaid, this Lease shall remain unaffected by such condemnation or taking, except that Base Rent and Rent Adjustments shall abate to the extent, if any, provided in this Section 13. In the event only a part of the Premises shall be so condemned or taken and this Lease and the Term and estate hereby granted with respect to the remaining portion of the Premises are not terminated as hereinbefore provided, Landlord will, with reasonable diligence and at its expense, restore the remaining portion of the Premises as nearly as practicable to the same condition as it was in prior to such condemnation or taking FN 11.4.

FN 11.1. through FN 11.4. - see page 11(a)

11

FN 11.1. - continued from Section 12.A.

and since this mutual waiver will preclude the assignment of any such claim by subrogation (or otherwise) to an insurance company (or any other person), Landlord and Tenant each agree to give each insurance company which has issued, or in the future may issue, its policies of fire, extended coverage or material damage insurance written notice of the terms of this mutual waiver, and to have such insurance policies properly endorsed, if necessary, to prevent the invalidation of any of the coverage provided by such insurance policies by reason of such mutual waiver.

FN 11.2. - continued from Section 12.B.

; provided, however, if Tenant maintains insurance on a "claims made" basis, Tenant shall be obligated to maintain such insurance, as set forth herein, for a period of no less than two (2) years after the Expiration Date or any extension thereto, and (b) standard so-called "all-risk" property insurance covering all Tenant's personal property, trade fixtures and any improvements not covered by Landlord's insurance, and (c) excess liability insurance with minimum coverage of $19,000,000.00;

FN 11.3. - continued from Section 13.A.

and the part taken is substantial enough that the taking would destroy the marketability of the Building, as determined by Landlord in its reasonable judgment,

FN 11.4. - continued from Section 13.A.

; provided, however, that Landlord shall have no obligation to repair, replace or restore the Tenant's furniture, equipment or other personal property and that Landlord shall repair, replace and restore the Initial Alterations and the Alterations, but only to the extent that Landlord actually receives condemnation proceeds on account thereof. Landlord agrees to make and diligently purse a claim for condemnation proceeds sufficient to repair, replace or restore the Initial Alterations and the Alterations. If (i) the grade of any street or alley adjacent to the Building or Real Property is changed by any competent authority, and (ii) such change of grade makes it necessary to remodel the Building to conform to the changed grade, and (iii) in Landlord's judgment, termination of this Lease is necessary to accomplish such remodeling, Landlord shall have the right to terminate this Lease upon not less than one hundred eighty (180) days notice prior to the date of termination designated in said notice.

11(a)


B. In the event of their termination in any of the cases hereinbefore provided, this Lease and the Term and estate hereby granted shall expire as of the date of such termination with the same effect as if that were the Expiration Date, and Base Rent and Rent Adjustments shall be accordingly apportioned.

C. In the event of any such condemnation or taking hereinbefore mentioned of all or a part of the Building or Real Property, Landlord shall be entitled to receive the entire award in the condemnation proceeding, including any award made for the value of the estate vested by this Lease in Tenant FN
12.1. and Tenant hereby expressly assigns to Landlord any and all right, title and interest of Tenant now or hereafter arising in or to any such award or any part thereof, and Tenant shall be entitled to receive no part of such award FN
12.2. Further, Tenant shall have no right to share in any judgment for damages caused by the grade of any street or alley adjacent to the Building or Real Property. No money or other consideration shall be payable by Landlord to Tenant for any termination by Landlord pursuant to this Section 13.

D. For purposes of this Section 13, the terms "condemned", "condemnation", "taken" or "taking" shall include a voluntary conveyance by Landlord to the condemning authority under threat of condemnation and the term "award" shall include the consideration paid by the condemning authority for such deed.

14. Assignment-Subletting.

FN 12.3.

FN 12.1. through FN 12.3. - see pages 12(a) - 12(c)

12

FN 12.1. - continued from Section 13.C.

(except as otherwise provided below in this Section 13.C.)

FN 12.2. - continued from Section 13.C.

; provided, however, that, subject to the rights of third parties under Section 16 of this Lease, Tenant may proceed independently in such proceeding but only for (i) the unamortized portion of the leasehold improvements for which Tenant has paid in their entirety, (ii) the relocation costs of Tenant, and (iii) the value of Tenant's leasehold estate (based upon the portion of the Premises condemned or taken and the Term remaining at the time of the condemnation or taking), but in any case, only if any such award is in addition to and not in diminution of the award of Landlord.

FN12.3. - continued from Section 14

A. Tenant may not, without the consent of Landlord:

1. assign, hypothecate, mortgage, encumber, or convey this Lease; provided, however, Tenant may, without the consent of Landlord, assign this Lease to any entity which has acquired all of the assets of Tenant by virtue of merger, consolidation, purchase, or other direct transfer, provided that after such acquisition, such entity has substantially the same net worth as Tenant as of the date of this Lease ("Successor"), it being understood that Tenant shall deliver to Landlord copies of the fully executed assignment and any related documentation within thirty (30) days after complete execution of the assignment;

2. allow any transfer thereof of any lien upon the interest of Tenant by operation of law;

3. permit the use or occupancy of the Premises or any part thereof by anyone other than Tenant, except to the extent provided in this
Section 14.

B. Assignment.

1. In order for Tenant to obtain the consent of Landlord to an assignment of this Lease for the remaining Term, Tenant shall submit to Landlord:

a. the proposed assignment (executed by Tenant and assignee), which is not to commence prior to the first day of the month immediately following the month in which the thirtieth (30th) day following the submission to Landlord occurs; and

b. sufficient information to permit Landlord to determine the acceptability of the financial responsibility of the proposed assignee, if Tenant is seeking to be released from liability hereunder, and whether the character of the proposed assignee will adversely affect Landlord's ability to market the Building as first-class office or retail space.

12(a)


2. Landlord shall not unreasonably withhold its consent to an assignment, provided that Tenant agrees that Landlord shall be acting reasonably when such consent is not granted if:

a. in the reasonable judgment of Landlord the character of the proposed assignees will adversely affect Landlord's ability to market the Building as a first-class downtown Chicago office building or any space contained therein as first-class office or retail space;

b. in the reasonable judgment of Landlord the purpose for which the assignee intends to use the Premises is not in keeping with the standards of Landlord for the Building, or is in violation of the terms of any other leases in the Building, it being understood that the purpose for which assignee intends to use the Premises may not be in violation of this Lease;

c. the assignee is either a government (or subdivision or agency thereof) or an occupant of the Building, provided that with respect to an occupant of the Building, Landlord must be reasonable in determining whether to grant its consent if no other reasonably comparable space in the Building is available to such proposed assignee;

d. less than the entire Lease, or the entire Lease for less than the remaining Term is being assigned;

e. if Tenant is seeking to be released from liability hereunder, the assignee is not, in the reasonable judgment of Landlord, solvent or does not have unencumbered assets of a value at least equal to twice the projected cost of the obligations to be assumed for the unexpired Term;

f. Tenant is in default under this Lease.

3. For purposes of this Section 14.B. an assignment shall be deemed to include a change in the majority control of Tenant, if Tenant is a partnership or a corporation whose stock is not traded publicly. The withholding of consent by Landlord to any assignment shall not affect or diminish any right of Tenant to sublet all or any part of the Premises. Notwithstanding anything contained herein to the contrary, Tenant shall remain primarily liable under this Lease following any assignment, unless Tenant is specifically released from liability by Landlord in writing.

C. Subletting. Tenant shall have the right, without Landlord's consent , to sublet all or any portion of the Premises (the entire Premises or any portion of the Premises if a sublet of less than all of the Premises is desired being hereinafter referred to as "Subject Premises"), provided that Tenant shall deliver to Landlord copies of the fully executed sublease and any related documentation within thirty (30) days after complete execution of the sublease.

D. If Tenant sublets the Premises or any portion thereof or assigns the Lease (with Landlord's consent, if required under this Section 14):

1. the terms and conditions of this Lease, including among other things, the use provisions and the liability of Tenant for the Subject Premises or

12(b)


the Premises (as the case may be), shall in no way be deemed modified, abrogated or amended.

2. the consent of Landlord to an assignment shall not be deemed a consent to any further assignments by either Tenant, subtenants or assignees.

3. Tenant shall pay Landlord as additional Base Rent, sixty percent (60%) of any excess rent (together with escalation) payable to and collected by Tenant under the sublease or assignment over the Base Rent pus Rent Adjustments payable to Landlord under this Lease, except that Tenant shall not be required to pay Landlord any portion of any excess rent arising out of a subletting of the 10th floor or any portion thereof. Notwithstanding any other provisions of this Lease, there shall be no abatement or reduction of Base Rent or Rent Adjustments as a result of amounts payable pursuant to this Section 14.D.3. Such excess rent shall first be reduced by one hundred percent (100%) of the following:

a. brokerage commissions;

b. advertising and legal expenses involved in the subletting or assignment or in subsequently enforcing the terms of the sublease or assignment; and

c. the actual expenditures of Tenant for improvements it is required to make as a result of the sublease or assignment.

4. in the case of a sublease, the sublease must contain default provisions similar to those contained in this Lease and in the event of a default under the sublease Tenant agrees to use reasonable efforts to promptly enforce such provisions if such default affects the safety or operation of the Building or its Systems or structure or the quiet enjoyment of any other tenants of their respective premises.

12(c)


15. Waiver of Claims and Indemnity.

A. 1. To the extent permitted by law, Tenant releases Landlord Related Parties (defined in Section 15.E.1.) from, and waives all claims for, damage to person or property sustained by Tenant or any occupant of the Building or Premises resulting from the Building or Premises or any part of either or any equipment or appurtenance becoming out of repair or resulting from any accident in or about the Building, or resulting directly or indirectly from any act or omission of any tenant or occupant of the Building or any other person, other than Landlord Related Parties. This Section 15 shall apply especially, but not to exclusively, to the flooding of basements or other subsurface areas, and to the damage caused by refrigerators, sprinkling devices, air-conditioning apparatus, water, snow, frost, steam, excessive heat or cold, falling plaster, broken glass, sewage, gas, odors or noise, or the bursting or leaking of pipes or plumbing fixtures and shall apply equally whether such damage be caused or result from any thing or circumstances above mentioned or referred to, or any other thing or circumstance whether of a like nature or of a wholly different nature.

2. The Landlord Related Parties shall not be liable, to the extent of the recovery by Tenant under any property damage insurance carried by it (whether or not required to be carried by the terms of this Lease), or if Tenant has made a reduction in the insurance which Tenant is required to keep in force pursuant to Section 12, to the extent of the recovery Tenant would have had if Tenant had not made such reduction, for any loss or damage to property even if due to the negligence, gross negligence or intentional misconduct of any of the Landlord Related Parties. Tenant shall make diligent efforts to recover from its insurers the full amount of any insured claim.

B. 1. To the extent permitted by law, Landlord releases Tenant Related Parties (defined in Section 15.E.2.) from, and waives all claims for, damage to person or property sustained by Landlord or any occupant of the Building or Premises resulting from the Building or Premises or any part of either or any equipment or appurtenance becoming out of repair or resulting from any accident in or about the Building, or resulting directly or indirectly from any act or omission of any tenant or occupant of the Building or of any other person, other than Tenant Related Parties. This Section 15 shall apply especially, but not exclusively, to the flooding of basements or other subsurface areas, and to damage caused by refrigerators, sprinkling devices, air-conditioning apparatus, water, snow, frost, steam, excessive heat or cold, falling plaster, broken glass, sewage, gas, odors or noise, or the bursting or leaking of pipes or plumbing fixtures and shall apply equally whether such damage be caused or result from any thing or circumstance above mentioned or referred to, or any other thing or circumstance whether of a like nature or of a wholly different nature. If any such damage, whether to the Premises or to the Building or any part thereof, or whether to Landlord or to other tenants in the Building, results from any negligence of Tenant Related Parties, its invitees or customers, except as provided in Section 15.B.2., Tenant shall be liable therefor and Landlord may, at the option of Landlord, repair such damage and subject to Section 15.B.2., Tenant shall, upon demand by Landlord, reimburse Landlord forthwith for the total expense of such repairs.

For a continuation of Section 15, see page 13(a)

13

2. The Tenant Related Parties shall not be liable to Landlord to the extent of the recovery by Landlord to the extent of the recovery by Landlord under any property damage or rent loss insurance carried by it (whether or not required to be carried by the terms of this Lease), or if Landlord has made a reduction in the insurance which Landlord is required to keep in force pursuant to Section 35, to the extent of the recovery Landlord would have had if Landlord had not made such reduction, for any loss or damage to any person or property even if due to the negligence, gross negligence or intentional misconduct of any of the Tenant Related Parties. Landlord shall make diligent efforts to recover from its insurers the full amount of any insured claim.

C. Except as provided in Section 15.B.2., Tenant agrees to indemnify and save all of the Landlord Related Parties harmless against any and all claims, demands, liabilities, costs and expenses, including, without limitation, reasonable attorney's fees for the defense thereof, arising from any breach or default on the part of Tenant in the performance of any covenant or agreement on the part of Tenant to be performed pursuant to the terms of this Lease, or from any negligence on any of the Tenant Related Parties in or about the Building or Premises. In case of any action or proceeding brought against any of the Landlord Related Parties by reason of such claim, upon notice from Landlord, Tenant covenants to defend such action or proceeding by counsel reasonably satisfactory to Landlord. Except as provided in Section 15.A.2., Landlord agrees to indemnify and save all of the Tenant Related Parties harmless against any and all claims, demands, liabilities, costs and expenses, including, without limitation, reasonable attorneys' fees for the defense thereof, arising from any breach or default on the part of Landlord in the performance of any covenant or agreement on the part of Landlord to be performed pursuant to the terms of this Lease (subject to Force Majeure), or from any negligence of any of the Landlord Related Parties in or about the Building or Premises. In case of any action or proceeding brought against any of the Tenant Related Parties by reason of any such claim, upon notice from Tenant, Landlord covenants to defend such action or proceeding by counsel reasonably satisfactory to Tenant.

D. Nothing contained in this Section 15 or in this Lease shall require Landlord Related Parties or Tenant Related Parties to release, indemnify, or waive claims against the other for liability caused by negligence or intentional misconduct of the other, it being understood that subject to Sections 15.A.2. and 15.B.2., each respective party shall be responsible for its own negligent or intentional misconduct.

E. For purpose of this Section 15:

1. "Landlord Related Parties" means Landlord, JMB/MS Management Co., the beneficiaries of Landlord, the partners which comprise the beneficiaries of Landlord, the partners which comprise such partners, and the agents, employees, officers, directors, shareholders, partners or principals (disclosed or undisclosed) of any of them.

2. "Tenant Related Parties" means Tenant or the officers, directors, shareholders, agents and employees of Tenant.

13(a)


16. Mortgage-Ground Lease. Landlord may execute and deliver a mortgage or trust deed in the nature of mortgage, both sometimes hereinafter referred to as "Mortgage," against the Building, the Real Property or any interest therein, and may sell and lease back the underlying land on which the Building is situated. If requested by the mortgagee or trustee or by the lessor of any ground or underlying lease (ground lessor), Tenant will either subordinate its interest in this Lease to said Mortgage, or ground or underlying lease or make its interest in this Lease superior, and will execute such agreement or agreements as may be reasonably required by such mortgagee, trustee or ground lessor FN 14.1.

It is further agreed:

A. Should any mortgage affecting the Building or the Real Property be foreclosed or if any ground or underlying lease be terminated:

1. The liability of the mortgagee, trustee or purchaser as such foreclosure sale or the liability of a subsequent owner designated as Landlord under this Lease shall FN 14.2. exist only so long as such trustee, mortgagee, purchaser or owner is the owner of the Building or Real Property and such shall not continue or survive after further transfer of said ownership.

2. Upon request of the mortgagee or trustee, Tenant will attorn as Tenant under this Lease, to the purchaser at any foreclosure sale thereunder FN 14.3. or if any ground or underlying lease be terminated for any reason, Tenant will attorn as Tenant under this Lease to the ground lessor under the ground lease FN 14.4. and will execute such i8nstruments as may be necessary or appropriate to evidence such attornment FN 14.5.

FN 14.1. through FN 14.5. - see page 14(a)

14

FN 14.1. - continued from Section 16

; provided, however, that Tenant shall not be required to subordinate its interest in this Lease unless the mortgage (or trustee) or ground lessor shall provide Tenant with a Non-Disturbance and Attornment Agreement providing substantially the same rights and obligations as the form attached hereto as Exhibit "F".

FN 14.2. - continued from Section 16.A.1.

, provided that the transferee of such mortgagee, trustee, purchaser at a foreclosure sale or subsequent owner designated as Landlord under this Lease assumes the obligations of Landlord under this Lease,

FN 14.3. - continued from Section 16.A.2.

provided that such purchaser assumes and performs the obligations of Landlord hereunder,

FN 14.5. - continued from Section 16.A.2.

(but only if Tenant has received an agreement providing substantially the same rights and obligations as the form attached hereto as Exhibit "F" executed by such mortgagee, trustee, ground lessor or purchaser at a foreclosure sale).

14(a)


B. This Lease may not be modified or amended except as provided so as to reduce the Base Rent and/or Rent Adjustments, or shorten the Term, or so as to adversely affect in any other respect to any material extent the rights of Landlord, nor shall this Lease be cancelled or surrendered, without he prior written consent, in each instance, of the ground lessor or mortgagee.

FN 15.1.

17. Certain Rights Reserved to Landlord. Landlord reserves and may exercise the following rights without affecting the obligations of Tenant hereunder:

A. to change the name or street address of the Building FN 15.2.

B. subject to Section 30 to install and maintain a sign or signs on the exterior of the Building;

C. to have access for Landlord and the other tenants of the Building to any mail chutes located on the Premises according to the rules of the United States Post Office;

D. to decorate, remodel, repair, alter or otherwise prepare the Premises for reoccupancy if Tenant vacates the Premises prior to the Expiration Date FN 15.3.

E. to retain pass keys at all times to the Premises FN 15.4.

F. to grant to anyone the exclusive right to conduct any business or undertaking in the Building FN 15.5.

G. to exhibit the Premises to FN 15.6.

H. to close the Building after regular working hours and on Holidays subject, however, to the right of Tenant to admittance, under such reasonable regulations as Landlord may prescribe from time to time which may include by way of example but not of limitation, that persons entering or leaving the Building identify themselves to a watchman by registration or otherwise and that said persons establish their right to enter or leave the Building:

I. to approve the weight, size and location of safes or other heavy equipment or articles, which articles may be moved in, about, or out of the Building or Premises only at such times and in such manner as Landlord shall direct and in all events, however, at the sole risk and responsibility of Tenant;

J. to take any and all measures, including inspections, repairs, alterations, decorations, outside the Premises, additions and improvements to the Premises or to the Building, as may be necessary for the safety, protection or preservation of the Premises FN 15.7.

FN 15.8. Landlord may enter upon the Premises and may exercise any or all of the foregoing rights hereby reserved without being deemed guilty of an eviction or disturbance of the use or possession by Tenant and without being liable in any manner to Tenant (except as provided in Section 15.D.) and without abatement of Base Rent or Rent Adjustments or affecting any of the obligations of Tenant hereunder.

18. Holding Over. If Tenant retains possession of the Premises or any part thereof after the termination of the Term or any extension thereof, by lapse of time or otherwise, on the first day of each month Tenant so retains possession, Tenant shall pay Landlord the Installments of Base Rent, and the estimate of Landlord of Rent Adjustments, both at double the rate payable for the month immediately preceding said holding over computed on a per-month basis, for each month or part thereof (without reduction for any partial month) that Tenant thus remains in possession, and in addition thereto, Tenant shall pay Landlord all damages, consequential as well as directly sustained by reason of the retention by Tenant of possession. The provisions of this Section do not exclude the right of Landlord of re-entry or any other right hereunder.

FN 15.1. through FN 15.8. - see pages 15(a) and 15(b)

15

FN 15.1. - continued after Section 16.B.

C. To the extent this Section 16 is inconsistent with Exhibit "F", Exhibit "F" shall be deemed controlling.

D. At the request of any mortgagee, trustee or ground lessor, Tenant shall give notice of any default by Landlord hereunder to such mortgagee, trustee or ground lessor, and such mortgagee, trustee or ground lessor shall have the right to cure such default within the applicable grace period provided herein, provided that such grace period shall commence upon giving of such notice by Tenant.

FN 15.2. - continued from Section 17.A.

; provided, however, if Landlord proposes such a change, it shall be subject to Tenant's approval which shall not be unreasonably withheld, provided further, however, that either a tenant in the Building or Landlord may refer to the Building or use the Madison Street address without Tenant's approval;

FN 15.3. - continued from Section 17.E.

; provided, however, Landlord shall give Tenant at least thirty (30) days advance notice of such work to be performed in the Premises;

FN 15.4. - continued from Section 17.F.

except to those areas within the Premises designated by Tenant as Secured Area(s) pursuant to Section 34 of this Lease;

FN 15.5. - continued from Section 17.G.

; provided, however, that the granting of such exclusive rights shall not: 1. restrict or interfere with Tenant's ability to conduct its business on the Premises, or to use the Premises as provided for under this Lease or 2. require Tenant to do business with any other Tenant in the Building;

FN 15.6. - continued from Section 17.H.

prospective tenants during the last twelve (12) months of the Term; provided, however, Landlord shall use reasonable efforts to give Tenant reasonable advance notice of such exhibition;

FN 15.7. - continued from Section 17.K.

, or as may be necessary or desirable for the safety, protection or preservation of the Real Property (other than the Premises) or in the interests of the Landlord, or as may be necessary or desirable in the operation of the Real Property; provided, however, Landlord shall use reasonable efforts to give Tenant advance notice if Landlord intends to exercise its rights under this
Section 17.K. within the Premises.

15(a)


FN 15.8. - continued at the beginning of the last paragraph of Section 17.

Subject to the provisions of Section 10 of this Lease regarding entry into the Premises by Landlord,

15(b)


19. Remedies of Landlord. All rights and remedies of Landlord herein enumerated shall be cumulative, and none shall exclude any other right or remedy allowed by law.

A. FN 16.1.

B. If Tenant defaults in the payment of Base Rent, Rent Adjustment Deposits or Rent Adjustments, or in payment of any other amount due Landlord and Tenant does not cure the default within twenty (20) days after written demand for payment of such Base Rent, Rent Adjustment Deposits or Rent Adjustments or other amounts due Landlord or if Tenant defaults in the prompt and full performance of any other provisions of this Lease, and Tenant does not cure the default within forty-five (45) days after written demand by Landlord that the default be cured (unless the default involves a hazardous condition, which shall be cured forthwith) or if the leasehold interest of Tenant be levied upon under execution or be attached by process of law and such levy or attachment is not released within ninety (90) days, or if Tenant makes an assignment for the Benefit of creditors or admits its inability to pay its debts, or if a receiver be appointed for any property of Tenant, or if Tenant abandons the Premises, then and only in any such event Landlord may, is Landlord so elects but not otherwise, and after notice of such election, either forthwith terminate this Lease and the right to possession of the Premises by Tenant or, without terminating this Lease, forthwith terminate the right to possession of the Premises by Tenant FN 16.2.

C. At the Expiration Date or upon any termination of this Lease, whether by lapse of time or otherwise, or upon any termination of the right to possession by Tenant without termination of this Lease, Tenant shall surrender possession and vacate the Premises immediately, and deliver possession thereof to Landlord, and hereby grants to Landlord full and free license to enter into and upon the Premises in such event with process of law and to repossess Landlord of the Premises as of the former estate of Landlord and to expel or remove Tenant and any others who may be occupying or within the Premises and to remove any and all property therefrom, without being deemed in any manner guilty of trespass, eviction or forcible entry or detainer, and without relinquishing the rights of Landlord to Base Rent or Rent Adjustments or any other right given to Landlord hereunder or by operation of law.

D. Landlord may elect to terminate the right to possession by Tenant only, without terminating this Lease, if Tenant fails to occupy or take possession of the Premises or fails to conduct its business activities in the Premises or abandons or vacates the Premises or otherwise entitles Landlord so to elect. Further, Landlord may elect to enter into the Premises, remove the signs of Tenant and other evidences of tenancy, and to take and hold possession thereof as in subsection C. of this Section 19 provided, without such entry and possession terminating this Lease or releasing Tenant, in whole or in part, from the obligation of Tenant to pay Base Rent or Rent Adjustments hereunder the full Term. Upon and after entry into possession without termination of the Lease, Landlord shall take reasonable measures to mitigate damages recoverable against Tenant and shall use reasonable efforts to relet the Premises or any

FN 16.1. and FN 16.2. - see page 16(a) - 16(b)

16

FN 16.1. - continued from Section 19.A.

A. To the extent permitted by law, if, at any time during the Term, Tenant who is then the holder of this Lease (or any guarantor of the obligations of Tenant under this Lease) becomes a debtor or debtor-in-possession under any Chapter of Title 11 of the United States Code 11 U.S.C. Sections 101 et. Seq. ("Code"), or any other federal statute pertaining to bankruptcy, whether by voluntary or involuntary proceedings (except where an involuntary petition shall be filed against Tenant, if it is vacated or withdrawn within sixty (60) days
[plus any extension of time granted in such bankruptcy proceedings]), makes a general assignment of its assets for the benefit of its creditors, or enters into any other court supervised or out-of-court restructuring or work-out of its liabilities, or if a receiver, liquidator, trustee or assignee is appointed to administer all or a portion of Tenant's assets (except where such receiver shall be appointed in an involuntary proceeding, and be withdrawn within sixty [60] days [plus any extension of time granted in such bankruptcy proceeding] of his appointment), or if the leasehold interest of Tenant is levied upon under execution or is attached by process of law, then and in any such event this Lease shall forthwith terminate without notice and without entry or other action by Landlord. Upon such termination Landlord shall be entitled to its remedies upon termination as set forth in Section 19.B.

FN 16.2. - continued from Section 19.B.

; provided, however, if Tenant defaults in any provisions of this Lease other than the payment of Base Rent, Rent Adjustment Deposits, Rent Adjustments or any other amount due Landlord, which shall be governed as stated, or other than a default which involves a hazardous condition or a default pursuant to Section
7.F., which shall be cured forthwith, and if Tenant, within the forty-five (45) day period referred to above, gives Landlord evidence which is satisfactory, in the reasonable judgment of Landlord, that Tenant is diligently pursuing a course which will remedy the default which is the subject of the notice, such default shall be deemed remedied, but provided further, that (i) if after one hundred twenty (120) days elapse from the date of the original notice of the default such default has not been cured, or (ii) if Tenant fails to give Landlord satisfactory evidence, within the forty-five (45) day period referred to above, that Tenant is diligently pursuing a course which will remedy the default, Landlord shall thereupon again have to right to serve notice of default as provided in this Section 19.B. and under such circumstances Tenant shall not have the right to cure the default beyond such forty-five (45) day period or to evidence diligent remedying of the default to avoid its consequences and Landlord shall be entitled immediately after giving such notice to exercise all of its remedies under this Lease with respect to such default. If Landlord terminates this Lease and the Term created hereby, pursuant to this Section 19, or if such termination occurs pursuant to Section 19.A., Landlord may forthwith repossess the Premises and shall be entitled to recover forthwith, in addition to any other sums or damages for which Tenant may be liable to Landlord, as damages a sum of money equal to the excess of the present value of the Base Rent plus Rent Adjustments provided to be paid by Tenant for the balance of the Term over the present value of the then reasonable rental value of the Premises (after deductions of all anticipated expenses of reletting) for said period. For purposes of determining present value, Landlord and Tenant agree to use a discount rate equal to the lower of the average published prime rate (or its equivalent) of

16(a)


interest then in effect at Continental Illinois National Bank and Trust Company of Chicago, The first National Bank of Chicago and Harris Trust and Savings Bank, or the maximum legal rate of interest. Should the present value of the then reasonable rental value of the Premises (after deduction of all anticipated expenses of reletting) for the balance of the Term exceed the present value of the Base Rent plus Rent Adjustments provided to be paid by Tenant for the balance of the Term, Landlord shall have no obligation to pay to Tenant the excess or any part thereof or to credit such excess or any part thereof against any other sums or damages for which Tenant may be liable to Landlord.

16(b)


part thereof for the account of Tenant to any person, firm or corporation other than Tenant, for such Base Rent, for such time and upon such terms as Landlord, in its reasonable discretion, shall determine, and Landlord shall not be required to accept any tenant offered by Tenant or to observe any instructions given by Tenant about such reletting. In any such case, Landlord may make repairs, alterations and additions in or to the Premises, and redecorate the same to the extent deemed by Landlord reasonably necessary or desirable, and Tenant shall, upon demand, pay the expense thereof, together with the expenses of Landlord of the reletting. If the consideration collected by Landlord upon any such reletting for the account of Tenant is not sufficient to pay monthly the full amount of the Base Rent and Rent Adjustments reserved in this Lease, together with the expenses of repairs, alterations, additions, redecorating and the expenses of Landlord, Tenant shall pay to Landlord the amount of each monthly deficiency upon demand.

E. Intentionally Omitted.

F. Any and all property which may be removed from the Premises by Landlord pursuant to the authority of the Lease or of law, to which Tenant is or may be entitled, may be handled, removed or stored by Landlord at the risk, cost and expense of Tenant, and Landlord shall in no event be responsible for the value, preservation or safekeeping thereof. Tenant shall pay to Landlord, upon demand, any and all expenses incurred in such removal and all storage charges against such property so long as the same shall be in possession of Landlord or under the control of Landlord. Any such property of Tenant not retaken from storage by Tenant at the end of the Term, however terminated, shall be conclusively presumed to have been conveyed by Tenant to Landlord under this Lease as a bill of sale without further payment or credit by Landlord to Tenant.

G. Tenant hereby grants Landlord a first lien upon the interest of Tenant under this Lease to secure the payment of moneys due under this Lease, which lien may be enforced in equity; and Landlord shall be entitled as a matter of right to have a receiver appointed to take possession of the Premises and relet the same under order of court.

H. Landlord or Tenant shall pay upon demand all the costs, charges and expenses of the other, including the fees of counsel, agents and others retained, incurred in enforcing the obligations of the other hereunder if the enforcing party prevails. If, however, either party causes the other party to become involved or concerned in any litigation, negotiation or transaction, without the fault of the other such party, such party shall pay the other party, upon demand, all of such other party's costs, charges and expenses, including the fees of counsel, agents and others retained, incurred in connection with such litigation, negotiation or transaction, regardless of who prevails. Additionally, if Tenant, on a repetitive basis, defaults under this Lease, so that Landlord, on a repetitive basis, is required to serve default notices on Tenant, Tenant shall pay Landlord a fee for each default notice served as reimbursement to Landlord for costs and expenses incurred in serving such default notices FN 17.1.

20. Intentionally Omitted.

21. Surrender of Possession. At the Expiration Date or other termination of the Term, or the right of Tenant to possession hereunder. Tenant shall quit and surrender the Premises to Landlord. broom clean, in good order and condition, ordinary wear and damage by fire or other casualty excepted, and Tenant shall remove all of its property FN 17.2. If Tenant does not remove its property of every kind and description from the Premises prior to the end of the Term, however ended. Tenant shall be conclusively presumed to have conveyed the same to Landlord under this Lease as a bill of sale without

FN 17.1. through FN 17.2. - see page 17(a)

17

FN 17.1. - continued from Section 19>H.

; provided that Tenant shall not be obligated to pay for the first three (3) default notices served to Tenant under this Lease.

FN 17.2. - continued from Section 21.

including, without limitation, the property which Landlord requires that Tenant remove pursuant to Section 9.K. Tenant shall repair any damage, other than the ordinary minor damage incidental to an office tenant vacating office space, caused by the removal of its property from the Premises.

17(a)


further payment or credit by Landlord to Tenant and Landlord may remove the same and Tenant shall pay the expense of such removal to Landlord upon demand. The obligation of Tenant to observe or perform this covenant shall survive the Expiration Date or other termination of the Term.

22. Notices. All notices shall be in writing unless otherwise specified.

A. Notices shall be effectively served by Landlord upon Tenant by forwarding via Certified or Registered Mail, postage prepaid, to Tenant at the Premises, Attn: the President, with separate copies to be forwarded as follows:

1. to the Premises:

a. Attn: David O'Gorman Senior Vice President of Administrations and Finance; or Tenant's Senior Vice President of Administrations and Finance form time to time;

b. Attn: the Real Estate Representative specified by Tenant (if one has been Designated to Landlord in a notice from Tenant); and

c. Attn: Legal Department

2. Goldberg, Kohn, Bell, Black, Rosenbloom & Morris, Ltd.


Attorneys -at -Law

55 East Monroe Street Suite 3900
Chicago, Illinois 60603 Attention: James B. Rosenbloom, Esquire

Or to such other address as Tenant mat direct in writing. The time of notice shall be three (3) business days after the time of mailing. If at any time during the Term Tenant's Senior Vice President of Administrations and Finance changes, Tenant shall immediately notify Landlord of such changes.

B. Notices shall be effectively served by Tenant upon Landlord when addressed to Landlord and served;

1. Upon an officer of Landlord; and

2. Certified or Registered Mail, postage prepaid, to Landlord in care of JMB/MS Management Co., Suite 1200, 111 East Wacker Drive, Chicago, Illinois 60601, Attention: Legal Department or if notified of another address by Landlord, at such later address, in which case three (3) business days after the time of mailing shall be the time of notice.

23. Intentionally Omitted.

24. Intentionally Omitted.

18

25. Registered Agent

A. Tenant shall at all times during the Term of this Lease have a registered agent for service of process in Illinois. Tenant hereby appoints Carl
A. Royal, or Tenant's general counsel form time to time, 30 South Wacker Drive, Chicago, Illinois 60606, as its true and lawful registered agent for service of process.

B. If at any time the during the Term Tenant's registered agent in Illinois and/or registered office changes (including without limitation its general counsel from time to time), Tenant shall immediately notify Landlord of such change.

26. Miscellaneous.

A. No payment by Tenant or receipt by Landlord of lesser amount than any Installment or payment of Base Rent, Rent Adjustment Deposits, Rent Adjustments or other amounts due shall be deemed other than on account of the amount due, and no endorsement or statement on any check or any transmittal document accompanying any check or payment of any amount due shall be deemed an accord and satisfaction. Landlord may accept such check or payment without prejudice to the right of the Landlord to recover the balance of any amount due or pursue any other remedies available to Landlord. No receipt of money by Landlord from Tenant after the Expiration Date or termination of the Lease or after the service of any notice or after the commencement of any suit, or after final judgment for possession of the Premises shall reinstate, continue or extend the Expiration Date of Term or affect any such notice, demand or suit.

B. No waiver of any default of Tenant or Landlord hereunder shall be implied from any omission by Landlord or Tenant to take any action on account of such default if such default persists or be repeated, and no express waiver shall affect any default other than the default specified in the express waiver and that only for the time and to the extent therein stated.

C. The word "Landlord" and "Tenant" wherever used in this Lease shall be construed to mean plural where necessary grammatical changes required to make the provisions hereof apply either to corporations or individuals, men or women, shall in all cases be assumed as though in each case fully expressed.

D. Each provision hereof shall extend to and shall, as the case may require, bind and inure to the benefit of Landlord and Tenant and their respective heirs, legal representatives, successors and assigns in the event this Lease has been assigned with the express written consent of Landlord.

E. Submission of this Lease for examination does not constitute a reservation of or option for the Premises. This Lease does not become effective as a lease or otherwise until execution and delivery by both Landlord and Tenant FN 19.1

F. All amounts owed by Tenant to Landlord shall be deemed additional Base Rent and ( unless otherwise provide, and other than the Base Rent, Rent Adjustments Deposits and rent Adjustments, which shall be due as provided) be paid within twenty (20) days from the date Landlord renders a statement of account. All such amounts (including Base Rent, Rent Adjustment Deposits and Rent Adjustments) shall bear interest from twenty (20) days after date paid at the average published prime rate (or its equivale) of interest in effect on the date due at the Continental Illinois National Bank and Trust Company of Chicago, The First National Bank of Chicago and the Harris Trust and Savings (the "Prime Rate") or at the maximum legal rate, if any, of interest for business loans, whichever is lower.

G. All exhibits attached to this Lease are hereby made a part of this Lease as though inserted in this Lease.

H. The headings of sections are for convenience only and do not limit or construe the contents of the sections.

I. If Tenant shall occupy the Premise prior to the Commencement Date with the consent of Landlord, all the provisions of this Lease shall be in full force and effect as soon as Tenant occupies the Premises.

J. Subject to Section 16, should any mortgage, leasehold or otherwise, requires modification of this Lease which will not bring about any increased expense to Tenant or in any other way materially change the rights and obligations of Tenant hereunder, Tenant agrees that this Lease may be so modified.

FN 19.1. - see page 19(a)

19

FN 19.1. - continued after Section 26.E.

If all of the terms and conditions thereof are acceptable to Landlord, Landlord shall use reasonable efforts to execute this Lease as soon as practicable after receipt of a Lease duly executed by Tenant. In the event that Landlord does not execute this Lease and deliver a copy thereof to Tenant within fifteen (15) days after the same is executed by Tenant and received by Landlord, Tenant, at any time prior to its receipt of a fully executed Lease from Landlord, shall have the right to revoke delivery and withdraw its execution of this Lease by serving Landlord with written notice thereof.

19(a)


K. Landlord and Tenant each represent to the other that they have dealt directly with and only with Metropolitan Structure and The Levy Organization as brokers in connection with this Lease, and that insofar as such party knows no other broker negotiated this Lease or is entitled to any commission in connection therewith, Landlord will pay the commission owing to Metropolitan Structure in connection with this Lease and will pay the commission owing to the Levy Organization. Tenant indemnifies and holds Landlord, its beneficiaries, Owner and the partners of Owner and their respective agents and employees harmless from all claims of any other brokers claiming to have been employed by or to have represented Tenant in connection with this Lease. Landlord indemnifies and holds Tenant, its agents and employees harmless from all claims of any other brokers claiming to have been employed by or to have represented Landlord in connection with this Lease.

J. Landlord and Tenant agrees from the time upon at least thirty (30) days prior to request, to deliver to the other a written statement certifying:
1. that this Lease is unmodified and in full force and effect, if such be the case (or if there have been modifications that the same is in full force and effect as modified, if such be the case and identifying the modification). 2. the dates to which the Base Rent and other charges have been paid, 3. that so far as the person making the certificate knows, Landlord or Tenant (as the case may be) is not in default under any provisions of this lease, if such the case and 4. any other information and certifications reasonably requested by Tenant or Landlord, ground lessor or mortgage (a the case may be).

M. The title of Landlord or Owner is and always shall be paramount to the title of Tenant, and nothing herein contained shall empower Tenant to do any act which can, shall or may encumber such title FN 20.1

N. The laws of the State of Illinois shall govern the validity, performance, construction and enforcement of this Lease.

O. If ant term, covenant or condition of this Lease or the application thereof to any person or circumstance shall, to any extent, be invalid or unenforceable, the remainder of this Lease, or the application of such term, covenant or condition to persons of circumstances other than those as to which it is held invalid or unenforceable, shall not be affected thereby and each term, covenant or condition of this Lease shall be valid and be enforceable to the fullest extent permitted by law.

P. The term "Owner", as used in this Lease, means the beneficiary of the Land Trust which owns title to the Real Property or the Building. If such beneficiary is a partnership, any liability or obligation of said partnership under this Lease whether as beneficiary or Owner shall be limited to solely to the assets of such Land Trust and no partner of said partnership shall be individually or personally liable for any claim arising out of this Lease. A deficit capital account of any such partner shall not be deemed an asset or property of said partnership.

Q. If Tenant is a corporation, the persons executing this Lease on behalf of such corporation hereby represent and warrant that they have been duly authorized to execute this Lease for and on behalf of such corporation pursuant to a duly adopted resolution of its board of directors or by virtue of its bylaws.

R. Landlord and Tenant agree that should Landlord, in the exercise of its reasonable discretion, determine that a fire emergency exit (crash door) is required in the interest of public safety, Landlord may, at its sole expense install such fire emergency exit (crash door) in any demising wall of the Premises.

S. If Landlord is a bank as trustee under a trust, this Lease is executed by the undersigned trustee, not personally but solely as trustee and its expressly understood and agreed by the parties hereto, anything contained herein to the contrary notwithstanding, that each and all of the covenants, undertakings, representations and agreements herein made are made and intended, not as personal covenants, undertakings, representations and agreements of the trustee, individually, or for the purpose of binding it personally , but this Lease is executed and delivered by the trustee, solely in the exercise of the powers confirmed upon it as such trustee under said trust agreement and no personal liability or personal responsibility is assumed by, nor shall at any time be asserted or enforced against said bank, the beneficiary of said trust or its Agent on account hereof, or on account of any covenant undertaking, representation, warranty or agreement herein contained, either expressed or implied, all such personal liability, if any, being hereby expressly waived and released by the parties hereto or holder hereof, and by all persons claiming by or through or under said parties or holder hereof. Such trustee, hereby confirms that its beneficiary has the authority to manage the Buildings and has designated JMB/MS Management Co. as Agent for the Beneficiary in connection with the management of the Building.

T. Intentionally Omitted.

FN 20.1 - see page 20 (a)

20

FN 20.1. - continued from Section 26.M.

, provided that either Landlord or Tenant may record a Memorandum of Lease in form and substance acceptable to both Landlord and Tenant.

20(a)


U. Landlord and Tenant agree, that to the extent permitted by law, for possession actions only, each shall and hereby does waive trial by jury.

V. Approvals, permission, elections or the consent of Landlord, or Tenant (as case may be) under this lease must be in writing in order to be valid and Landlord and Tenant agree that their respective approval or consent when required under this Lease shall not be unreasonably withheld or delayed, except to the extent that this Lease expressly sets forth a different standard for the granting or withholding of such approval or consent.

X. The liability or obligations of Metropolitan Structures under this Lease, if any, shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claims arising out of this Lease. A deficit capital account of any such partner shall not be deemed an asset or property of said partnership.

Y. Landlord represents that to the best of its knowledge, information and belief, as of the date of this Lease, the Building and all Systems and fire safety apparatus fully comply with all applicable laws, ordinances, governmental regulations and fire safety requirements.

Z. This Lease does not grant any rights to light or air over the building.

AA. The liability or obligations of JMB/MS Management Co. under this Lease, if any, shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claim arising out of this Lease. A deficit capital account of any such partner shall not be deemed an asset or property of said partnership.

21

27. Tenant Credit

A. 1. As a concession to Tenant, Landlord hereby grants Tenant the following credits in the aggregate amount of THREE MILLION SIX HUNDRED TWENTY-EIGHT THOUSAND FOUR HUNDRED FIFTY-THREE AND 20/100 Dollars ($3,628,453.20) ("Rent Credit") to be applied against the following Installments:

     MONTH                  AMOUNT
     -----                  ------

April, 1988           $      260,746.10
May, 1988                    260,746.10
June, 1988                   260,746.10
July, 1988                   260,746.10
August, 1988                 260,746.10
September, 1988              260,746.10
October, 1988                260,746.10
November, 1988               260,746.10
December, 1988               260,746.10
January, 1989                260,746.10
February, 1989               260,746.10
March, 1989                  260,746.10
April, 1989                   41,625.00
May, 1989                     41,625.00
June, 1989                    41,625.00
July, 1989                    41,625.00
August, 1989                  41,625.00
September, 1989               41,625.00
October, 1989                 41,625.00
November, 1989                41,625.00
December, 1989                41,625.00
January, 1990                 41,625.00
February, 1990                41,625.00
March, 1990                   41,625.00
                      -----------------

         Rent Credit  $    3,628,453.20

2. a. The monthly credits listed above are herein referred to as "Installment Credits". Installment Credits shall only be applied against Installments to any other provisions of this Lease, the Installment Credit for each month during which such an abatement occurs shall be applied to the portion (if any) of the Installment of Base Rent for such month that is not abated, and the portion of the Installment Credit for such month not applied against Base Rent for such month by reason of such abatement (The "Deferred Installment Credit") shall be applied toward Installments of non-abated Base Rent becoming due as follows: the aggregate amount of Deferred Installment Credits (if any) shall be applied as a credit toward successive Installments of Base Rent not otherwise abated pursuant to this Lease, commencing with the Installment of Base Rent for the month of April 1989 or the first month thereafter that Base Rent is not otherwise abated, until the aggregate amount of Deferred Installment Credits has been so applied. For example, if Base Rent for the entire Premises was abated for the month of June, 1988 and for the first ten (10) days of July, 1988, then the aggregate amount of Deferred Installment

22

Credits would equal $346,470.85 ($260,746.10 for June, 1988 plus $85,724.75 for the first ten (10) days of July, 1988). Such amount would than be applied as a credit toward the following Installments:

  MONTH                 AMOUNT
  -----                 ------

April, 1989           $219,121.10
May, 1989              127,349.75
                      -----------
        Total         $346,470.85

It is understood that Deferred Installment Credits shall not be applied as a credit toward Rent Adjustment Deposits, Rent Adjustments or any amount, other than the Base Rent Installments, due and owing from Tenant to Landlord pursuant to any provision of this Lease.

b. Under no circumstances (including, without limitation a termination of this Lease as a result of a default) shall Landlord be obligated to pay Tenant cash or any other form of consideration on account of the Installment Credits or the Deferred Installment Credits (if any), even if Tenant will not otherwise receive the benefit of all or any portion of the Installment Credits or the Deferred Installment Credits (if any).

3. The balance of Base Rent, Rent Adjustment Deposits and/or Rent Adjustments due for any month to which an Installment Credit or Deferred Installment Credit (if any) is applied shall be paid as provided in Sections 2 and 3 of this Lease.

B. 1. As an additional concession to Tenant, Landlord hereby grants Tenant a credit ("Work Credit") in the amount of SEVEN MILLION SIX HUNDRED TWENTY-FOUR THOUSAND SEVEN HUNDRED AND 00/100 Dollars ($7,624,700.00, this amount is calculated as follows: [($45.00 X 175,660) - $300,000.00] plus $20,000.00 to be applied in the following sequence:

a. $73,074.56 (.416 X 175,660) to the cost of the preliminary sprinkler grid in the Premises existing as of the date of the Lease; and

b. $5,260.74 (.416 X 12,646) to the cost of the preliminary sprinkler grid in the Support Space (as defined in the Support Space Supplement attached hereto) existing as of the date of this Lease; and

c. $29,686.54 to the cost of horizontal Venetian blinds purchased form Landlord for all peripheral windows in the Premises; and

d. the balance shall be applied to the cost of the Initial Alterations (as defined in the Work Supplement) performed in the Premises (including, but not limited to, the cost of space planning, design, related architectural and engineering services and the preparation of Plans [as defined in the Work Supplement] for the Initial Alterations performed in the Premises).

23

2. Tenant shall be responsible for the performance of the Initial Alterations. During construction of the Initial Alterations, upon receipt by Landlord of waivers of mechanics' liens from the General Contractor and the subcontractors (with respect to lienable items only); percentage completion certificates from Tenant, Tenant's architect, its General Contractor, space planner, engineer and other consultants as the case may be; a sworn contractors affidavit form the General Contractor; and a written request to disburse from Tenant containing an approval by Tenant of the work done and specifying each party to whom Work Credit funds are to be disbursed and the amount of each disbursement, Landlord shall disburse Work Credit funds directly to Tenant's architect, space planner, engineer or other consultants or General Contractor or subcontractors (as the case may be); provided, however, Landlord will only disburse Work Credit funds at the end of each calendar month and only for the cost of work done during the period beginning with the commencement of construction and ending two years thereafter and with respect to which Landlord receives the documents required under this subsection 27.B.2. on or before the first day of such calendar month, and provided further, that Landlord shall be obligated to disburse any portion of the Work Credit during the continuance of an uncured material or monetary default under this Lease, and Landlord's obligation to disburse shall only resume when and if such default is cured. If practicable, subcontractor's mechanics lien waivers will cover all work for which disbursements is requested. Otherwise, such waivers shall at least cover all work for which previous draws have been made. There shall be no fee charged to Tenant for the disbursing of Work Credit.

3. Notwithstanding anything contained herein to the contrary, if Landlord fails to disburse funds as required in subsection 27.B.2. above, and as a result thereof Tenant disburses its own funds toward the Initial Alterations, Landlord shall pay interest to Tenant on such funds from the date of such disbursement by Tenant to the date the Work Credit is disbursed by Landlord, or any portion thereof which would cover the amount then disbursed by Tenant, at the average published prime rate (or its equivalent) of interest in effect on the date the Work Credit would other wise have been due, at the Continental Illinois National Bank and Trust Company of Chicago, The First National Bank of Chicago and the Harris Trust and Savings Bank or the maximum legal rate, if any, of interest for business loans, whichever is lower.

4. Upon completion of the Initial Alterations Tenant shall furnish Landlord with: a. Tenant, General Contractor, and architectural completion affidavits, b. full and final waivers of lien, c. receipted bills covering all labor and materials expended and used, d. other appropriate documents evidencing completion of the Initial Alterations, and f. a representation from Tenant to the best of its knowledge and a certification by Tenant's architect, that the Initial Alterations were constructed in accordance with the Plans and all applicable building codes and regulations (provided that Landlord shall have the right to withhold final payment until Tenant has furnished Landlord with the items required in subsections 27.B.4.a. through 27.B.4.f.).

28. Intentionally Omitted.

29. Intentionally Omitted.

24

30. Signage.

I. Elevator Lobby Sign.

A. Tenant may, at its expense, install up to three (3) signs ("Lobby Signs") identifying Tenant (Tenant name and logo), in the elevator lobby of the elevator bank serving the Premises in the lobby at the Plaza level of the Building (the "Low Rise Elevator Lobby") on the east and west walls at the north end of such Low Rise Elevator Lobby, and on the east wall at the south end of such Low Rise Elevator Lobby shown as point A, Point B and Point C, respectively, on attached Exhibit "I", but only if:

1. Tenant is not in default under this Lease at the time of installation (or if in default, applicable grace periods have not then expired); and

2. at the time of installation Tenant and/or Members of Tenant occupy (and are legally entitled to occupy) or have leased at least 50,000 square feet of space in the Building; provided, however, Tenant shall not be entitled to install its Lobby Sign prior to the Commencement Date.

B. Landlord, Landlord's architect and Tenant shall work together to determine the general design (including, without limitation, the size, material, shape and lettering) of the Lobby Signs, provided that Landlord's architect shall have the right to make the final determination of the general design if Landlord and Tenant cannot agree upon the general design. The precise location and method of installation of each Lobby Sign must be approved by the architect of Landlord in its reasonable discretion.

C. The Lobby Signs may not be installed until the earlier to occur of (i) June 30, 1988; and (ii) the date on which a sign identifying another tenant in the Building is installed in the lobby at the Plaza level of the Building.

D. All other elevator lobby signs at the Plaza level of the Building shall have the same general appearance (i.e., size, material, shape and lettering
[except to the extent that a tenant's logo requires a certain type of lettering]) as the Lobby Signs and shall be installed only at those locations designated on Exhibit "I". There shall be no other signs in the lobby at the Plaza level other than temporary signs which are in place for no more than one hundred twenty (120) days, the lobby directory, and signband identifying the retail tenants.

E. No signs other than the Lobby Signs shall, be installed in the Low Rise Elevator Lobby, provided that Landlord may install a sign for the parking garage on the west wall at the south end of the Low Rise Elevator Lobby in the location shown on Exhibit "I" attached hereto.

F. Tenant, at its expense, shall repair and replace the Lobby Signs or lettering when necessary. Landlord shall clean and maintain the Lobby Signs.

G. Landlord may (at its option) remove the Lobby Signs, and the restrictions on signage set forth in subsections 30.I.D. and 30.I.E. shall no longer be effective or applicable, if at any time Tenant and/or Members of Tenant occupy (and are legally entitled to occupy) or have leased less than 50,000 square feet in the Building (whether by reason of subleases, assignments or otherwise); provided

25

that for purposes of this subsection 30.I.G., Tenant and/or its Members will be deemed not to be in occupancy of any space in the Building which they are not entitled to occupy (for example, if Tenant and/or its Members are in occupancy as holdover tenants).

II. Building Sign.

A. If:

1. Landlord decides, in its sole discretion, to install a sign on or outside of the Building identifying the Building and/or tenants of the Building ("Building Sign"), other than a signband identifying retail tenants; and

2. Tenant is not in default under this Lease (or if in default, applicable grace periods have not then expired) at the time of installation; and

3. at the time of installation, Tenant and/or Members of Tenant occupy (and are legally entitled to occupy) or have leased at least 75,000 square feet of space in the Building;

Landlord shall include the name of Tenant on the Building Sign, it being understood that the names of up to six (6) other tenants of the Building may be listed on the Building Sign along with the name of Tenant.

B. The Building Sign will be located at a point within the area and substantially in the form shown on pages 1 and 2, respectively, of Exhibit "J" attached hereto. The final design details, the exact location within the area and the method of installation of such Building Sign shall be determined by Landlord and the architect of Landlord in their sole and absolute discretion.

C. If the Building Sign is installed, Landlord, at any time, in its sole discretion, may delete the names of other tenants listed on the Building Sign. Landlord shall not install more than one (1) Building Sign.

D. If Landlord decides, in its sole discretion, to install the Building Sign, Tenant shall pay its share of all of the costs of designing, constructing and installing such sign, which share shall be determined as follows: Tenant shall pay an amount ("Signage Share") equal to the total costs of the Building Sign divided by the number of tenants whose names will appear on the sign when it is initially installed. Tenant shall pay Landlord such amount within thirty
(30) days after receipt of an invoice therefore from Landlord. With respect to each additional tenant whose name is added to the sign after its initial installation, Landlord shall recalculate Tenant's Signage Share based upon the increased number of tenants whose names will appear on the Sign, and if Tenant is not in default under this Lease, Landlord shall remit the difference between the Tenant's initial Signage Share and the Tenant's new Signage Share to the Tenant (if the new Signage Share is less than the initial Signage Share). Landlord shall remit any such amount within thirty (30) days after the addition of the new name on the Building Sign.

26

E. Landlord may, at its option, remove the Tenant's name from the Building Sign, and may redesign or add new Building Signs without incorporating Tenant's name thereon, if at any time the Tenant and/or Members of Tenant occupy (and are legally entitled to occupy) or have leased less than 75,000 square feet in the Building (whether by reason of subleases, assignments or otherwise); provided that for purposes of this subsection 30.II.E., Tenant and/or its Members will be deemed not to be in occupancy of any space in the Building which they are not entitled to occupy (for example, if Tenant and/or its Members are in occupancy as holdover tenants).

31. Antenna Option.

A. Tenant may lease space on the roof of the Building ("Antenna Option") to install, operate and maintain, at the expense of Tenant, a microwave receiving and/or transmitting facility or other similar communications equipment ("Facility"), if:

1. Landlord receives notice of exercise ("Antenna Notice") of this Antenna Option at any time on or before eighteen (18) months prior to the Expiration Date; and

2. Tenant is not in default under this Lease, after any applicable grace periods have expired, at the time it delivers the Antenna Notice; provided, that if Tenant fails to cure any default existing at the time the Antenna Notice is given within the applicable grace periods, Landlord, at its option, may declare Tenant's Antenna Notice to be null and void; and

3. the Antenna Area (defined below) is for the use of Tenant only during the Term and thereafter, if Tenant continues to lease the Antenna Area after the Term pursuant to subsection 31.D.; and

4. Tenant obtains, at its expense, all necessary permits and licenses form the City of Chicago and any other governmental agency having jurisdiction prior to installing the Facility in the Antenna Area; and

5. Tenant obtains the written approval of Landlord of the method of installation of, and the plans and specifications for, the Facility prior to installing the Facility prior to installing the Facility in the Antenna Area, which approval shall not be unreasonably withheld; and

6. Tenant executes and returns the "Antenna Supplement" (subsection 31.B.2. below) within thirty (30) days of its submission to Tenant.

B. If Tenant is able to and properly exercises its Antenna Option:

1. Landlord shall deliver seventy-five (75) square feet in a location on the roof of the Building selected by Landlord; provided, however, if Tenant determines the location selected by Landlord is not suitable, upon written request from Tenant, Landlord will identify the areas on the roof of the Building which Landlord has designated for use by tenants for communication equipment and which are available to be leased by Tenant for its Facility, and Tenant shall (subject to subsection 31.E.[ii] below) have the right to select an alternate location within the

27

available areas on the roof of the Building, which in Tenant's judgment is more suitable for placement of the Facility; provided further, however, any area on the roof of the Building that is subject to the rights of other tenants in the Building or in the 30 South Wacker Building (regardless of whether such rights arise pursuant to a lease or lease amendment entered into subsequent to the date hereof but prior to Tenant's selection of such alternate location) shall not be available for lease by Tenant. The space ultimately designated for the Facility shall be referred to herein as the "Antenna Area". Landlord makes no representation and shall have no obligation with respect to the suitability of the Antenna Area for use of the Facility.

2. a. Landlord shall prepare an Antenna Supplement to this Lease to reflect monthly installment for the Antenna Area, the annual increase in such installment specified in subsection 31.C., the provisions of subsections 31.D., 31.E., 31.F. and 31.G. and other appropriate terms set forth in this Section 31; and

b. a copy of the Antenna Supplement shall be sent to Tenant within a reasonable time after receipt of the Antenna Notice and executed by Tenant and returned to Landlord in accordance with subsection 31.A.6.;

3. The term for the Antenna Area shall commence upon the stated commencement date of the Antenna Supplement ("Antenna Commencement Date") and all terms and conditions of this Lease shall be applicable to the Antenna Area except Sections 3,4,27,33 and 35, and except to the extent that such terms and conditions with the provisions of this Section 31 ( which provisions shall govern and control the leasing of the Antenna Area).

C. The monthly installment for the Antenna Area ("Antenna Installment") shall be $500.00 for the first twelve (12) months subsequent to the Antenna Commencement Date. The Antenna Installment shall then be increased at each Antenna Space Anniversary ("Antenna Space Anniversary" means the annual recurrence of the Antenna Commencement Date) by an amount equal to two percent (2%) of the Antenna Installment due for the month immediately preceding such Antenna Space Anniversary, e.g., if the Antenna Commencement date is February 1, 1989, then the Antenna Installment due for each month in the period commencing February 1, 1989 and ending January 31, 1990 shall be $500.00, and the Antenna Installment due for each month in the period commencing February 1, 1990 and ending January 31, 1991 shall be $510.00, and the Antenna Installment due for each month in the period commencing February 1, 1991 and ending January 31, 1992 shall be $520.00 and so on during the Term.

D. The term of the Antenna Supplement shall end ("Antenna Expiration Date") upon the Expiration Date or earlier termination of this Lease, provided that Tenant may continue to lease the Antenna Area after the Antenna Expiration Date, provided that Tenant:

1. continues to occupy (and is entitled to occupy) and conduct business on the Trading Floors (subsection 3.A.18) and/or continues to occupy (and is entitled to occupy) and conduct business in office space in the Building; and

28

2. executes a lease for the Antenna Area ("Antenna Lease"),

a. The term of the Antenna Lease shall commence on the day immediately following the Antenna Expiration Date and end, with the exception that Tenant shall have a right to cancel upon thirty (30) days prior notice, on the later to occur of (i) the date Tenant no longer occupies (or is no longer entitled to occupy) and conducts business on the Trading Floors, and (ii) the date Tenant no longer occupies (or is no longer entitled to occupy) and conducts business in office space in the Building.

b. The initial Antenna Installment for the Antenna Area under the Antenna Lease shall equal the Antenna Installment for the month in which the Antenna Expiration Date occurred plus two percent (2%) of such Antenna Installment, if the Antenna Lease commences on the original Antenna Space Anniversary. The Antenna Installment shall thereafter continue to be increased on the original Antenna Space Anniversary pursuant to subsection 31.C.

c. So long as and to the extent that there will be Members leasing in the aggregate of 100,000 square feet of space in the Building after a fire or casualty, Tenant and Landlord shall have the same rights and obligations under the Antenna Supplement with respect to the Antenna Area as is set forth in
Section II of this Lease with respect to the Premises.

d. Tenant and Landlord shall have the same rights and obligations under the Antenna Supplement with respect to the Antenna Area as is set forth in
Section 16 of this Lease with respect to the Premises.

e. Tenant shall have the right to record a short form memorandum of the Antenna Supplement on a form acceptable to Landlord and Tenant.

f. Except as otherwise provided in this subsection 31.D.2., the Antenna Lease shall be on the same terms and conditions as set forth in this subsection 31.

E. Tenant agrees that (i) it will cooperate with the owners and users of other communications equipment installed in or on the Building, and (ii) the installation and operation of the Facility will not interfere with the operation or functioning of other communications equipment installed in or on the Building prior to the installation of the Facility, and (iii) Tenant shall not alter, redirect or change the method of operation of its Facility if such alteration, redirection or change would interfere with the operation or functioning of other communications equipment in or on the Building at the time of such alteration, redirection or change, and (iv) if any interference of the type described in clause (ii) or clause (iii) of this subsection 31.E.. occurs, Tenant will eliminate the cause thereof at Tenant's expense..

F. Tenant hereby agrees to indemnify and hold Landlord, its beneficiaries, Owner and partners of Owner and their respective agents and employees harmless against all claims, demands, liabilities, costs and expenses of any and every kind, including, without limitation, reasonable attorney's fees, arising from or connected in any way with the installation, use, operation or maintenance of the

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Facility, including, without limitation, claims for interference prohibited by subsection 31.E. or claims from third parties occupying other property.

G. Tenant shall remove the Facility and repair all damage caused by such removal, and restore the Antenna Area to the condition in which it existed immediately prior to the time the Facility was installed, on the later to occur of:

1. the Antenna Expiration Date; and

2. the expiration or earlier termination of the Antenna Lease (if such Antenna Lease is entered into by Landlord and Tenant).

32. Intentionally Omitted

33. Obligation of Landlord to Repair and Maintain.

Landlord shall, at its expense (except as otherwise provided herein through inclusion in Expenses to the extent provided in subsection 3.a.4.), keep and maintain in good repair and working order and make all repairs to and perform necessary maintenance upon:

A. the Building; and

B. all structural elements of the Building within the Premises and the Support Space (defined in the Support Space Supplement to this Lease); and

C. all Systems within the Premises and the Support Space (defined in the Support Space Supplement to this Lease), but only to the extent such have been installed by Landlord or its contractors; and

D. all elements of the Building and the Premises necessary to provide the services described in Section 4, but only to the extent such have been installed by Landlord or its contractors; and

E. the Building facilities common to all tenants including, but not limited to, the ceilings, lights, HVAC, plumbing, walls and floors in the common areas (which common areas do not include the Lobby Space [defined in the Support Space Supplement] leased by Tenant).

34. Secured Area(s).

A. Notwithstanding subsection 7.I., Tenant may, if Tenant complies with subsection 34.B below, provide its own locks to an area(s) within the Premises ("Secured Area(s)") at any time during the Term. Tenant need not furnish Landlord with a key, but upon the Expiration Date, Tenant shall surrender all such keys to Landlord. If Landlord determines in its sole discretion, that an emergency (or other situation ) in the Building or the Premises, including, without limitation, a suspected fire or flood, requires Landlord to gain access to the Premises, Tenant hereby authorizes Landlord to forcibly enter the Secured Area(s). In such event, except s provided in subsection 15. D., Landlord shall have no liability whatsoever to Tenant, and Tenant shall pay all reasonable expenses incurred by Landlord in repairing or reconstructing any entrance, corridor or other door or other portions of the

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Premises or the Secure Area(s) damaged as a result of the forcible entry by Landlord. Landlord shall make reasonable efforts to contact Tenant or its representatives to secure access to the Secured Area(s) prior to a forcible entry but under no circumstances is Landlord obligated to contact Tenant. Landlord shall have no obligation to provide either janitor service or cleaning in the Secured Area(s).

B. On or before ten (10) days prior to the date that Tenant establishes a Secured Area by providing its own locks to such area, Tenant shall notify Landlord of the location of the Secured Area and Tenant shall provide Landlord with the name of the representatives of Tenants to be contacted and the manner of contact to avoid a forcible entry as stated in subsection 34.A. above.

35. Parking

A. Landlord shall, subject to the provisions of subsection 35.D. below, during the Term, cause the operator ("Operator") of the Building automobile parking facility to make thirty-seven (37) parking privileges ("Privileges") available to Tenant.

B. If, at any time during the Term, Tenant adds office space in the Building to the initial Premises, Landlord shall subject to the provisions of subsection 35.D. below, cause the Operator to make one (1) additional Privilege available to Tenant for each 6,000 square feet added to the initial Premises.

C. Tenant shall:

1. contract with the Operator for the initial Privileges or any subsequent Privileges made available by virtue of Tenant adding office space in the Building to the initial Premises, within thirty (30) days after its occupancy of the Premises or such additional space (as the case may be); and

2. pay the monthly charge for the Privileges at the rate charges by the Operator from time to time;

3. use the Privileges so contracted for on a continuous basis.

D. If Tenant fails to pay the aforesaid monthly charge, or to contract within the time stated, or to continuously use the Privileges, Landlord need no longer cause such Privileges which are not contracted for or used continuously to be made available.

36. Insurance of Landlord

A. Landlord shall maintain the following insurances coverages in full force and effect during the Term, including insurance on the Building against fire or casualty in amounts adequate to prevent co-insurance:

1. standard so-called "all-risk" property insurance, covering the Building in amounts at least equal to ninety percent (90%) of the replacement cost of the building (including Tenant's improvements) at the time in question , but in no event less than such coverage as is required to avoid co-insurance provisions;

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2. commercial general liability insurance (including contractual liability) with minimum limits of $1,000,000.,, for injury to or death of one or more persons and damage to or destruction of property in any occurrence combined;

3. excess liability insurance over the insurance required by subsection 36.A.2. with minimum coverage of $19,000,000.00; and

4. boiler and machinery coverage in amounts customarily carried by landlords for other first-class office buildings located in Chicago.

B. At the request of Tenant, Landlord shall furnish Tenant a certificate or certificates of insurance showing that the insurance coverage required hereby is in force. Any insurance required by the terms of this Lease to be carried by Landlord may be under a blanket policy (or policies) covering other properties of Landlord and/or its related or affiliated entities. If such insurance is maintained under a blanket policy, Landlord procure and deliver to Tenant a statement from the insurer or general agent of the insurer setting forth the coverage maintained and the amounts thereof allocated to the risks intended to be insured hereunder. All insurance required to be obtained and maintained by Landlord pursuant to this Section shall be issued by responsible insuring companies qualified to do business within the State of Illinois, and having "Bests" Financial "Size Category Rating" of at least "A + XII" (or if a Bests" rating is not then available, having a comparable rating by a similar institution with offices located in a least five (5) cities within the United States).

37. Vault

A. Notwithstanding subsection 7.M., Landlord hereby grants Tenant permission to install, at its own expense, a concrete and /or steel vault ("Vault") in the Premises provided however:

1. such installation is performed in accordance with the terms of this Lease; and

2. on or before the Expiration Date, or earlier termination of this Lease, Tenant shall, at its own expense, remove the Vault from the Premises and restore the area where the Vault was installed to the condition in which it existed before such installation, reasonable wear and tear expected.

B. Tenant may, on or before sixty (60) days prior to the Expiration Date, request permission to leave the Vault in the Premises with the understanding that Landlord, in the exercise of its sole and absolute discretion, may refuse such permission.

38. Access to Trading Floors.

A. Tenant shall have the right to perform Alterations so as to provide access to the Trading Floors (the "Access Alterations"). Such Access Alterations shall be performed in accordance with the terms and conditions of this Lease, including, but not limited to Section 9 hereof. Tenant shall perform such Access Alterations at its sole cost and expense, provided the Tenant shall have the right

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to perform the Access Alterations as Initial Alterations (defined in the Work Supplement attached hereto as Exhibit "C") and apply any portion of the Work Credit that it is entitled to receive pursuant to subsection 27.B. hereof against the cost of such Access Alterations.

B. Notwithstanding anything to the contrary in subsection 9.K. hereof or elsewhere in this Lease, Tenant shall be responsible for removing Access Alterations and restoring those portions of the Premises affected by such removal, including the restoration of any demising walls removed in connection with the performance of Access Alterations, on or before the expiration Date or earlier termination of this Lease. If Tenant has not restored the Premises by such date, Landlord shall have the right to perform such restoration at Tenant's sole cost and expense.

39. Non-Disturbance and Attornment Agreement

As a condition precedent to Tenant's obligations hereunder, Landlord shall, after receiving this Lease executed by Tenant, obtain and deliver to Tenant a Non-Disturbance and Attornment Agreement ("Agreement") from Citicorp Real Estate, Inc. ("Mortgagee"), in substantially the form of Exhibit "F" attached hereto. Tenant shall execute the Agreement and submit it to Landlord at the same time this Lease is executed and submitted to Landlord.

40. Quiet Enjoyment

Notwithstanding any provisions contained in this Lease to the contrary, Landlord covenants and agrees with Tenant that upon Tenant paying Base Rent, Rent Adjustments and Rent Adjustment Deposits and observing and performing all terms, covenants and conditions on the part of Tenant to be observed and performed, Tenant shall have the right to peaceably and quietly enjoy the Premises, subject nevertheless, to the terms and conditions of this Lease including, but not limited to, Section 16 and Exhibit "F".

41. Intentionally Omitted.

42. Compliance With Laws.

Tenant shall operate the Premises and Landlord shall operate the Building in compliance with all applicable federal, state and municipal laws, ordinances and regulations, unless such obligation is specifically imposed upon the other party pursuant to the terms of this Lease, and shall not knowingly, directly, or indirectly make any use of the Premises or the Building which I prohibited by any such laws, ordinances, or regulations.

43. Security Services

A. Tenant may contract with a fully licensed, insured and bonded security company (the "Security Company") or, at Tenant's option, utilize an employee of Tenant, in order to provide one unarmed security guard ("Security Guard") at the main reception desk in the lobby on the Plaza Level of the Building for purposes of monitoring only Tenant's employees, invitees, permitees and licensees who wish entry into the Premises, or any portions thereof.

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1. Tenant agrees to hold harmless, indemnify and defend the Landlord Related Parties from and against any and all claims, demands, liabilities, costs and expenses (including, without limitation, reasonable attorney's fees) arising from or connected in any way with (i) the acts or omissions of the Security Guard (whether said Security Guard acts within or outside of his scope of employment) or Security Company or (ii) the failure of Tenant to comply with this Section 43; and

2. Tenant shall bear the expense of (i) the service provided by the Security Guard, (ii) changes to the main reception desk in the lobby on the Plaza level, if changes are necessary to accommodate the Security Guard, and
(iii) and telecommunications system which Tenant may require at such main reception desk; provided, however, that any changes to the main reception desk (except for the installation of a telecommunications system) shall be subject to the approval of Landlord (which Landlord may grant or withhold in its sole discretion) and shall otherwise be performed in accordance with Section 9 of this Lease; and

3. If Tenant elects to use one of its employees as a Security Guard, such Security Guard will be fully bonded and insured and, if required by any applicable law, licensed.

B. Services provided by the Security Guard shall at no time interfere with the entrance reception service provided by Landlord in the Building (subsection
4.A.6.). Such services shall be performed in a manner consistent with similar services in first-class downtown Chicago high-rise office buildings, and if Landlord determines, in its reasonable judgment, that the Security Guard is not performing in such a manner and so notifies Tenant, Tenant shall remove the Security Guard, provided that Tenant shall have the right to substitute a new Security Guard if Tenant complies with all the requirements of this Section 43. The Security Guard shall not monitor or otherwise interfere with traffic to and from the portions of the Building other than the Premises.

44. Renewal Option

A. Tenant shall have the option to extend the Term for ten (10) years by changing the Expiration Date from November 30, 2003 to November 30, 2013, if:

1. Landlord receives notice of exercise ("Renewal Notice") on or before December 1, 2002; and

2. Tenant is not in default under this Lease, after any applicable grace periods have expired, at the time of Landlord's receipt of the Renewal Notice provided, that if Tenant fails to cure any default existing at the time the Renewal Notice is given within the applicable grace periods, Landlord, at its option, may declare Tenant's Renewal Notice (pursuant to subsection 44.A.1.) to be null and void; and

3. not more than twenty-five percent (25%) of the Premises (excluding any subletting of the portion of the Premises located on the 10th floor of the Building) is sublet to parties other than Members at the time of Landlord's receipt of the Renewal Notice; and

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4. this Lease has not been assigned, with the exception of an assignment to a Successor as defined in subsection 14.A.1., at the time of Landlord's receipt of the Renewal Notice; and

5. subject to Section 14 of this Lease (including Tenant's right to sublet pursuant to Section 14), the Premises are intended to be for the use of Tenant only during the entire Extension.

B. The annual rate per square foot of Base Rent during the period commencing on December 1, 2003 and ending on November 30, 2013 (the "Extension") shall equal prevailing market. For the purpose of this Section 44 only, "prevailing market" shall be determined by considering leases for "as-is" space ("As-Is Leases") being entered into at such time in the Building of the 30 South Wacker Building giving appropriate consideration to rate per square foot, escalation and abatement provisions, if any, length of lease term, size and location of premises being leased, work or allowances, if any and other applicable terms and conditions of tenancy; provided however, there shall be excluded from a consideration of prevailing market, As-Is Leases entered into under "special circumstances" which include the following (among others):

1. the landlord being forced to lease space; or

2. the lease term being less than five (5) years; or

3. the space being subject to options or rights exercisable in the future; or

4. the space being of an awkward or unusual shape; or

5. the lack of windows in the space.

If no As-Is Leases are than being entered into in the Building or the 30 South Wacker Building, the same process stated in the preceding sentence shall be used, but As-Is Leases in reasonably similar neighboring first class high rise office buildings shall be the ones considered.

C. If Tenant satisfies the conditions set forth in subsection 44.A. above, Landlord shall prepare a Renewal Amendment reflecting the change in the Expiration Date and any other appropriate terms. Execution counterparts of such Renewal Amendment shall be delivered to Tenant for execution within a reasonable time after Landlord's receipt of Renewal Notice. Tenant shall execute the Renewal Amendment within thirty (30) days after its submission to Tenant. Upon receipt of executed counterparts form Tenant, Landlord will execute and return, as soon as practicable, one counterpart of the Renewal Amendment to Tenant.

45. Printing Facility.

Landlord acknowledges that Tenant may request permission to install a printing facility at some time during the Term to provide service to Tenant and the Members only. Landlord hereby represents that in the event that Landlord receives such a request, that it will not reject such request solely on the basis that a printing facility would be beyond the Use set forth in Section 1 of this Lease. Landlord

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may, however, reject such request on the basis of Section 9 or any other controlling provision of this Lease.

46. Escalator Option

A. Tenant intends to install two (2) pairs of escalators (the "Escalators") in the Premises as part of Initial Alterations (defined in the Work Supplement attached hereto as Exhibit "C"). The first pair of escalators shall run up and down between the third floor of the Premises through the fifth floor of the Premises. The second pair of escalators shall run up and down between the fifth floor of the Premises through the seventh of the Premises. Tenant shall be responsible for the maintenance and repair of the Escalators during the Term.

B. Tenant shall have the right to lease 23,144 square feet of space (the "Escalator Areas") shown cross-hatched on the attached Exhibits K-1 (3rd floor), K-2 (4th floor), K-3 (5th floor), K-4 (6th floor), and K-5 (7th floor) for an initial term (the "Initial Escalator Term") of five (5) years commencing on the day following the Expiration Date of this Lease, provided that:

1. Tenant provides Landlord with written notice ("Escalator Notice") by no later than one (1) year prior to the Expiration Date of this Lease;

2. Tenant, after any applicable grace periods have expired, is not in default under this Lease at the time Landlord receives Tenant's Escalator Notice, provided that if Tenant fails to cure any default existing at the time Tenant's Escalator Notice is given within the applicable grace periods, Landlord, at its option, may declare Tenant's Escalator Notice (pursuant to subsection 46.B.1.) to be null and void; and

3. Tenant executes a lease for the Escalator Areas (the "Escalator Lease") upon the terms and conditions set forth in subsection 46.D. below.

C. Notwithstanding anything in subsection 46.B. or subsection 46.D. to the contrary, Landlord shall have the right to reconfigure the Escalator Areas at any time during the term of the Escalator Lease to provide for the construction of any corridors required by the Chicago building code or any other applicable codes, ordinances, rules or regulations and the cost thereof shall be borne in accordance with the terms of this Lease. In addition, Landlord shall have the right to reconfigure the Escalator Areas at any time prior to the commencement of the Escalator Lease, provided that:

1. Landlord will provide Tenant with written notice of its election to reconfigure the Escalator Area (which notice shall contain demising plans illustrating the new configuration) by no later than ninety (90) days after receipt of Tenant's notice in accordance with subsection 46.B.1. above;

2. Such reconfiguration may reduce, but not exceed, the square footage of the Escalator Areas stated in subsection 46.B. above;

3. Such reconfiguration will not materially affects Tenant's ability to use the Escalator; and

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4. If the square footage of the Escalator Areas id reduced, the CPI amount set forth in subsection 46.D.2.b. below and other appropriate terms shall be appropriately adjusted on the basis of the new square footage of the escalator areas.

D. If Tenant is able to and properly exercise its right to lease the Escalator Areas, Landlord shall prepare the Escalator Lease on the basis of the following:

1. the Initial Escalator Term shall be for five (5) years commencing on the day following the Expiration Date of this Lease. Tenant shall have the perpetual right to renew the Escalator Lease for successive terms of five (5) years each (each renewal term shall be referred to herein as an "Escalator Renewal Term"), provided that:

a. Tenant provides Landlord with written notice to renew by no later than one (1) year prior to the expiration date of the Initial Escalator Term or applicable Escalator Renewal Term, as the case may be; and

b. Tenant, after any applicable grace periods have expired, is not in default under the Escalator Lease at the time Landlord receives Tenant's notice to renew; provided, that if Tenant fails to cure any default existing at the time Tenant's notice to renew is given within the applicable grace periods, Landlord, at its option, may declare Tenant's Escalator Notice to be null and void.

2. The base rent and rent adjustments for the Escalator Areas during the Initial Escalator Term and subsequent Escalator Renewal Terms shall be:

a. an annual base rent of $17.45 per square foot ;

b. a CPI (as defined in this Lease) amount for each Lease Year of $162,008 ($7.00 X 23,144) multiplied by the percentage of increase by which the CPI for April of any lease year (including, without limitation the first year Escalator lease year) of the Escalator Lease during the Initial Escalator Term of subsequent Escalator Renewal Terms exceeds the CPI for the Escalator Base Year (defined below);

c. an amount equal to Tenant's Escalator Area Proportion (defined below) of Expenses during the Initial Escalator Term or subsequent Escalator Renewal Terms;

d. an amount equal to Tenant's Escalator Area Protection (defined below) of Taxes during the Initial Escalator Term or subsequent Escalator Renewal Terms.

3. Tenant and Landlord shall have the same rights and obligations under the Escalator Lease with respect to the Escalator Areas as is set forth in
Section 11 of this Lease with respect to the Premises;

4. Landlord shall use reasonable efforts to provide Tenant with the same rights and obligations under the Escalator Lease with respect to the Escalator Areas as is set forth in Section 16 and Section 39 of this Lease with respect to the Premises;

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5. Tenant shall have the right to record a short form memorandum of the Escalator Lease on a form acceptable to Landlord and Tenant;

6. Tenant shall be solely responsible for the repair and maintenance of the Escalators and for the removal of the Escalators in accordance with subsection 46.F. below.

7. Tenant shall, at its sole cost and expense, be responsible for erecting demising walls and ceilings, constructed with soundproofing materials such as fiberglass, additional layer(s) of gypsum board and duct transfer and otherwise preparing the Escalator Areas in accordance with Exhibits "K-1" through "K-5", and

8. Except as to any terms and conditions specifically provided herein, Landlord shall prepare the Escalator Lease on the standard from lease being used by Landlord at the expiration of this Lease, with such changes as Tenant may reasonably request or as may be necessary to confirm with any provision hereof.

E. Execution counterparts of the Escalator Lease shall be delivered to Tenant for execution within a reasonable time after Landlord's receipt of Tenant's initial notice of its intent to exercise its rights with respect to the Escalators Areas. Landlord and Tenant shall proceed with due diligence to arrive at a final negotiated version of the Escalator Lease specifically including the terms set forth in subsection 46.D. hereof.

F. Notwithstanding anything in subsection 9.K. hereof to the contrary, if Tenant does not exercise its right to lease the Escalator Areas, Tenant shall, upon the Expiration Date or earlier termination of this Lease, remove the Escalators and restore the Premises to the condition that existed on the execution of this Lease insofar as the Premises were altered to permit the installation of the Escalators. Notwithstanding anything in subsection 9.K. hereof to the contrary, if Tenant exercised its rights to lease the escalator Areas, Tenant shall, prior to the expiration or earlier termination of the Escalator Lease, remove the Escalators located in the Escalator Areas and restore the Escalator Areas to the condition that existed at the execution of this Lease insofar as the Premises were altered to permit installation to the Escalators. If Tenant fails to remove the Escalators and restore the Premises or the Escalator Areas, as the case may be, as provided herein, Landlord shall have the right to perform such work at Tenant's sole cost and expense.

G. For purposes of this Section 46:

1. "Escalator Base Year" means the calendar month of April, 1988;

2. "Escalator Area Proportion" means the percentage derived by dividing the current rentable area of the Escalator Area by the Rentable Area of the Building and multiplying by one hundred (100).

47. Telecommunication Closet Option

A. Tenant shall have the right to lease the 70 usable square feet of space (the "Telecommunication Closet Area") shown cross-hatched and designated as "CME

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Electrical Closet" on the attached Exhibits "L-1" (2nd floor), "L-2" (3rd floor), "L-3" (4th floor), "L-4" (5th floor), "L-5" (6th floor), "L-6" (7th floor), "L-7" (8th floor), "L-8" (9th floor), "L-9" (10th floor) and "L-10" (M-1 floor) for an initial tern of five (5) years commencing on the day following the Expiration Date of this Lease (the "Initial Telecommunication Closet Lease Term"), provided that:

1. Tenant provides Landlord with written notice ("Telecommunication Notice") by no later than one (1) year prior to the Expiration Date of this Lease of its intention to lease the Telecommunication Closet Area;

2. Tenant, after any applicable grace periods have expired, is not in default under this Lease at the time Landlord receives Tenant's Telecommunication Notice; provided that if Tenant fails to cure any default existing at the time Tenant's Telecommunication Notice is given within the applicable grace periods, Landlord, at its option, may declare Tenant's Telecommunication Notice to be null and void.

3. Tenant executes a lease for the Telecommunication Closet Areas (the "Telecommunication Closet Lease") upon the terms and conditions set forth in subsection 47.B. below.

B. If Tenant is able to and properly exercise its rights to lease the Telecommunication Closet Areas, Landlord shall prepare the Telecommunication Closet Lease on the basis of the following:

1. the Initial Telecommunication Closet Lease shall be for five (5) years commencing on the day following the Expiration Date of this Lease. Tenant shall have the perpetual right to renew the Telecommunication Closet Lease for successive terms of five (5) years each (each renewal term shall be referred to herein as an "Telecommunication Closet Renewal Term"), provided that:

a. Tenant provides Landlord with written notice to renew by no later than one (1) year prior to the expiration date of the Initial Telecommunication Closet Lease Term or applicable Telecommunication Closet Renewal Term, as the case may be; and

b. Tenant, after any applicable grace periods have expired, is not in default under the Telecommunication Closet Lease at the time Landlord receives Tenants notice to renew; provided that if Tenant fails to cure any default existing at the time Tenant's notice to renew is given within the applicable grace periods, Landlord, at its option, may declare Tenant's notice to renew (pursuant to subsection 47.B.1.a.) to be null and void.

2. a. the annual base rent per square foot for the telecommunication Closet Area during the first year of the Initial Telecommunication Closet Lease Term shall equal the annual base rent per square foot contained in the Support Installment in effect for the last month of the Support Term (defined in the Support Space Supplement to this Lease multiplied by one hundred four percent (104%); and

b. subsequently, the annual base rent per square foot shall be increased at each Telecommunication Anniversary (defined below) during the Initial

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Telecommunication Closet Lease Term and any applicable Telecommunication Closet Renewal Term by an amount equal to four percent (4%) of the annual base rent per square foot in effect immediately preceding such Telecommunication Anniversary; and

c. no Rent Adjustments shall be payable with respect to the Telecommunication Closet Area.

3. So long as to the extent that Tenant and/or Members will be leasing in the aggregate of 100,000 square feet of space in the Building after a fire or casualty who were hooked into and receiving service from Tenant's telecommunication system prior to a fire or casualty, Tenant and Landlord shall have the same rights and obligations under the Telecommunication Closet Lease with respect to the Telecommunication Closet Area as is set forth in Section 11 of this Lease with respect to the Premises;

4. Landlord shall use reasonable efforts to provide Tenant with the same rights and obligations under the Telecommunication Closet Lease with respect to the Telecommunication Closet Area as is set forth in Section 16 and 39 of this Lease with respect to the Premises.

5. Tenant shall have the right to record a short form memorandum of the Telecommunication Closet Lease on a form acceptable to Landlord and Tenant;

6. Tenant shall use the freight elevators to obtain access to and from the Telecommunication Closet Areas; and

7. Except as to any terms and conditions specifically provided herein, Landlord shall prepare the Telecommunication Closet Lease on the standard form storage space lease being used by Landlord at the Expiration Date of this Lease, with such changes as Tenant may reasonably request or as may be necessary to conform with any provisions hereof.

C. Execution counterparts of the Telecommunication Closet Lease shall be delivered to Tenant for execution within a reasonable time after Landlord's receipt of Tenant's initial notice of its intent to exercise its rights with respect to the Telecommunication Closet Areas. Landlord and Tenant shall proceed with due diligence to arrive at a final negotiated version of the Telecommunication Closet Lease specifically including the terms set forth in subsection 47.B. hereof.

D. For purposes of this Section 47, "Telecommunications Anniversary" means the annual recurrence of the month in which the Initial Telecommunications Closet Term commences.

48. Expansion Option.

A. Tenant may lease additional space ("Expansion Option"), if:

1. Tenant, after any applicable grace periods have expired, is not in default under this Lease; provided that if Tenant fails to cure any default existing at the time Tenant's Five, Ten or Fifteen Year Notice, as the case may be, is given

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within the applicable grace periods, Landlord, at its option, may declare Tenant's Five, Ten or Fifteen Year Notice, as the case may be, to be null and void; and

2. no more than fifteen percent (15%) of the Premises (excluding any subletting of the portion of the Premises located on the 10th floor of the Building) is sublet to parties other than Members at the time of Landlord's receipt of the Five, Ten and/or Fifteen Year Notice (defined below), as the case may be; and

3. this Lease has not been assigned, except to a Successor; and

4. the Five, Ten and/or Fifteen Year Space (defined below) is intended to be for the exclusive use of Tenant or a Successor only, except as permitted by subsections 14.C. and 14.D.; and

5. for Fifteen Year Space only, Tenant has exercised or concurrently exercises its Renewal Option (Section 44); and

6. Landlord receives notice of exercise of this Expansion Option for:

a. Five Year Space ("Five Year Notice") on or before March 31, 1992; and

b. Ten Year Space ("Ten Year Notice") on or before March 31, 1997; and

c. Fifteen Year Space ("Fifteen Year Notice") on or before November 30, 2002; and

7. Tenant executes and returns the Five, Ten or Fifteen Year Amendment(s), as the case mat be, (subsection 48.D.1. below) within thirty (30) days of their submission to Tenant.

B. Landlord shall provide Tenant with Five Year Space, Ten Year Space and Fifteen Year Space, as the case may be, in accordance with Tenant's priority list to the extent possible, considering the availability of space in the Building and in the 30 South Wacker Building. The Tenant's priority list is as follows: first, on floors 11 through 17 inclusive, in the Building or on floors 2 through 22 inclusive, in the 30 South Wacker Building ("First Location"); secondly, on floors 23 through 30 in the 30 South Wacker Building ("Second Location"); and thirdly, on floors 18 through 40 inclusive, in the Building or on floors 31 through 40 inclusive, in the 30 South Wacker Building ("Third Location") (such First, Second, and Third Location shall collectively be referred to herein as the "Expansion Location").

C. 1. If Tenant is able to and appropriately exercises its Expansion Option for Five Year Space, Landlord shall designate one (1) full floor located within the Expansion Location ("Five Year Space") on or before 180 days after March 31, 1992 and shall deliver such Five Year Space during the period commencing 90 days after Landlord designates such Five Year Space and ending on April 1, 1994, but in no event prior to January 1, 1993 ("Five Year Space Window")...

2. If Tenant is able to and appropriately exercises its Expansion Option for Ten Year Space, Landlord shall designate one (1) full floor located

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within the Expansion Location ("Ten Year Space") on or before 180 days after March 31, 1997 and shall deliver such Ten Year Space during the period commencing 90 days after Landlord designates such Ten Year Space and ending on July 1, 1999, but in no event prior to October 1, 1997 ("Ten Year Space Window").

3. If Tenant is able to and appropriately exercises its Expansion Option for Fifteen Year Space, Landlord shall designate one (1) full floor located within the Expansion Location ("Fifteen Year Space") on or before 180 days after November 30, 2002 and shall deliver such Fifteen Year Space during the period commencing 90 days after Landlord designates such Fifteen Year Space and ending on June 1, 2005, but in no event prior to June 1, 2003 ("Fifteen Year Space Window").

D. If Tenant is able to and appropriately exercises its Expansion Option for Five, Ten, and/or Fifteen Year Space:

1. Landlord shall prepare an amendment (the "Five, Ten or Fifteen Year Amendment", as the case may be) to reflect changes in:

a. the size of the Premises;

b. Base Rent;

c. Installments;

d. Tenant's Proportion; and

e. Other appropriate terms.

2. A copy of the Five, Ten and/or Fifteen Year Amendment shall be:

a. sent to Tenant within a reasonable time after receipt of the Five, Ten and/or Fifteen Year Notice; and

b. Executed by Tenant and returned to Landlord in accordance with subsection 48.A.7.

E. 1. The annual Base Rent rate per square foot for Five Year Space, Ten Year Space and Fifteen Year Space, as the case may be, shall equal:

a. $17.45 per square foot if such Five, Ten and Fifteen Year Space, as the case may be, is in the First Location; or

b. $20.00 per square foot if such Five, Ten and Fifteen Year Space, as the case may be, is in the Second Location or the Third Location.

2. Tenant shall pay Rent Adjustments for the Five, Ten and Fifteen Year Space, as the case may be, on the same terms and conditions set forth in
Section 3 of this Lease, including, but not limited to the Base Year of April, 1988.

F. 1. Landlord shall deliver Five Year Space to Tenant in no more than two
(2) separate blocks of Five Year Space. No part of any single block of Five

42

Year Space shall contain space that is not contiguous to the remainder of such block. The first block of Five Year Space delivered by Landlord shall contain no less than fifty percent (50%) of the total square footage of all Five Year Space that Landlord is required to deliver pursuant to subsection 48.C.1. The second block of Five Year Space shall contain the remainder of the floor in which the initial block of Five Year Space is located. The term for each block of Five Year Space shall commence on the date that such space is delivered to Tenant and thereupon such space shall be considered Premises, subject to all terms and conditions of this Lease.

2. Landlord shall deliver Ten Year Space to Tenant in no more than two
(2) separate blocks of Ten Year Space. No part of ant single block of Ten Year Space shall contain space that is not contiguous to the remainder of such block. The first block of Ten Year Space delivered by Landlord shall contain no less than fifty percent (50%) of the total square footage of all Ten Year Space that Landlord is required to deliver pursuant to subsection 48.C.2. The second block of Ten Year Space shall contain the remainder of the floor on which the initial block of Ten Year Space is located. The term for each block of Ten Year Space shall commence on the date that such space is delivered to Tenant and thereupon such space shall be considered Premises, subject to all terms and conditions of this Lease. 3. Landlord shall deliver Fifteen Year Space to Tenant in no more than two (2) separate blocks of Fifteen Year Space. No part of any single block of Fifteen Year Space shall contain space that is not contiguous to the remainder of such block. The first block of Fifteen Year Space delivered by Landlord shall contain no less than fifty percent (50%) of the total square footage of all Fifteen Year Space that Landlord is required to deliver pursuant to subsection 48.C.3. The second block of Fifteen Year Space shall contain the remainder of the floor in which the initial block of Fifteen Year Space is located. The term for each block of Fifteen Year Space shall commence on the date that such space is delivered to Tenant and thereupon such space shall be considered Premises, subject to all terms and conditions of this Lease.

G. When Landlord has established the annual Base Rent rate per square foot for the Five, Ten or Fifteen Year Space, as the case may be, such amount shall be multiplied by the Rentable Area of the Five, Ten or Fifteen Year Space then being added to the Premises, as the case may be, and the sum so derived shall be divided by twelve (12) to obtain the Installments payable for the Five, Ten or Fifteen Year Space being added, as the case may be. Such Installment shall then, between the commencement of the term for Five, Ten or Fifteen Year Space, as the case may be, and the Expiration Data, be added to total the Base Rent payable for the balance of the Premises.

H. The Five, Ten and Fifteen Year Space, as the case may be (including improvements and personalty, if any, shall be accepted by Tenant in its "as-built" condition and configuration as of the date the term for such space commences, unless it has never been occupied, under which circumstances Landlord, at Tenant's option, shall either:

1. construct such space to building standard existing on the date that such Five, Ten and Fifteen Year Space, as the case may be, is to be delivered

43

(provided that if there is no building standard on such date Landlord shall construct such space to building standard as described in Exhibit "M"); or

2. provide Tenant with a credit in the amount of the value of applicable building standard describes in subsection 48.H.1. above

49. Intentionally Omitted.

50. Right of First Offering

A. During the Term of this Lease, when Landlord has a prospective tenant ("Prospect") interested in leasing any space on floors 11 through 24 inclusive, of the Building, Landlord shall advise Tenant in the manner set forth in Exhibit "P" attached hereto ("Advice") of such interest to lease such space, and Tenant may lease ("Right of First Offering" [ROFO]) the space shown in the Advice ("Offering Space"), in its entirety only, under the terms of the Advice, except that Tenant shall have no right and Landlord need not give the Advice, if:

1. Tenant is in default under this Lease after any applicable grace period expired; provided that if Tenant fails to cure any default existing at the time Tenant exercises its ROFO pursuant to the Advice ("Notice of Exercise") within the applicable grace periods, Landlord, at its option, may declare Tenant's Notice of Exercise to be null and void; or

2. more than fifteen percent (15%) of the Premises (excluding any subletting of the portion of the Premises located on the 10th floor of the Building) is sublet to parties other than Members; or

3. this Lease has been assigned, with the exception of an assignment to a Successor, as defined in subsection 14.A.1.; or

4. Tenant is not an occupant of the Building under this Lease; or

5. subject to section 14 of this Lease (including Tenant's right to sublet pursuant to Section 14), the Offering Space is not to be used by Tenant for its own immediate use; or

6. the Offering Space is subject to Superior Rights (defined below).

B. Notwithstanding anything to the contrary in this Section 50, Tenant's ROFO with respect to any Offering Space, shall be subject and subordinate to:

1. the renewal rights of any tenant with respect to such Offering Space (regardless of whether such rights arose pursuant to a lease or lease amendment executed to the date hereof);

2. an extension of the lease term by a tenant leasing such Offering Space;

3. the expansion rights of any tenant in the Building or the 30 South Wacker Building with respect to such Offering Space (regardless of whether such

44

rights arose pursuant to a lease or lease amendment executed subsequent to the date hereof); and

4. the right of first offering rights of any tenant in the Building or 30 South Wacker Building existing as of the date hereof.

The foregoing rights set forth in subsection 50.B.1. through subsection 50.B.4. above, shall be referred to herein as "Superior Rights".

C. 1. The ROFO shall be exercised by the execution by Tenant and delivery to Landlord of:

a. the Notice of Exercise within fifteen (15) days after the date of the Advice; and

b. the Offering Amendment (as defined in subsection 50.E.) within thirty (30) days after the submission of the Offering Amendment to Tenant by Landlord.

2. All terms stated in the Advice (including, without limitation, the expiration date set forth in the Advice) shall govern Tenant's lease of the Offering Space, and only to the extent that they do not conflict with the Advice, the terms and conditions of this Lease shall apply to the Offering Space, except that no allowances, credits, abatements, rent caps or other rent limitations contained in this Lease shall apply to the Offering Space.

D. The term for the Offering Space shall commence upon the commencement date as stated in the Offering Amendment, and the Offering Space shall thereupon be considered a part of the Premises subject to all terms and conditions of this Lease (except to the extent modifications are required pursuant to subsection 50.C.2.).

E. If Tenant is able to and properly exercises its ROFO, Landlord shall prepare an amendment (the "Offering Amendment") adding the Offering Space to the Premises, and reflecting the terms and conditions stated in the Advice. A copy of such Offering Amendment shall be:

1. sent to Tenant within a reasonable time after receipt of the Notice of Exercise in the Advice; and

2. executed by Tenant and returned to Landlord in accordance with subsection 50.C.1.b. above.

F. The rights of Tenant under this Section 50 shall commence, subject to Superior Rights, as to any particular Offering Space immediately after initial leasing of such Offering Space and terminates as to:

1. all Offering Space, one (1) year prior to the Expiration Date of this Lease as the same may be extended pursuant to the Tenant's Renewal Option; and

2. any particular Offering Space, under any and all circumstances on the earlier of:

45

a. the failure of Tenant to exercise the ROFO; or

b. the date upon which the rejection portion of the Advice is executed by Tenant, provided that Landlord consummates such lease with such Prospect at any time after such rejection (or with another prospective tenant within six (6) months after such rejection) on substantially the same economic terms as set forth in the Advice, i.e., no greater than 10 percent (10%) reduction on an aggregate basis, in the base rent, rent credits or allowances, construction allowances and other economic terms set forth in the Advice, and with no more than a ten percent (10%) change in the rentable area of the Offering Space.

Under such circumstances set forth in subsection 50.F.2.a (subject to Section 48 of this Lease, if the Offering Space is Five, Ten, or Fifteen Year Space, as the case may be), Landlord shall be free to lease the Offering Space on any terms and conditions it deems appropriate.

51. Bathroom Facilities.

A. Tenant intends to install bathroom facilities (the "Facilities") on the third and seventh floors of the Premises as part of Initial Alterations (defined in the Work Supplement attached hereto as Exhibit "C"). Tenant shall pay Landlord as additional rent any increase in the cost of providing janitorial services to such floors over the cost that would have been incurred for providing janitorial services absent the installation of the Facilities.

B. Tenant shall have the right to lease 7,686 square feet of space (the "Bathroom Facility Areas") shown cross-hatched on the attached Exhibit "Q-1" (3rd floor) and "Q-2" (7th floor) for an initial term (the "Initial Bathroom Facility Term") of five (5) years commencing on the day following the Expiration Date of this Lease; provided that:

1. Tenant provides Landlord with written notice (the "Bathroom Facility Notice") by no later than one (1) year prior to the Expiration Date of this Lease as the same may be extended pursuant to Tenant's Renewal Option;

2. Tenant, after any applicable grace periods have expired, is not in default under this Lease at the time Landlord receives Tenant's Bathroom Facility Notice; provided that if Tenant fails to cure any default existing as of the date the Bathroom Facility Notice is given within the applicable grace periods, Landlord, at its option, may declare Tenant's Bathroom Facility Notice (pursuant to subsection 51.B.1) to be null and void; and

3. Tenant executes a lease for the Bathroom Facility Areas (the "Bathroom Facility Lease") upon the terms and conditions set fourth in subsection 51.C. below.

C. If Tenant is able to and properly exercises its rights to lease the Bathroom Facility Areas, Landlord shall prepare the Bathroom Facility Lease on the basis of the following:

46

1. the Initial Bathroom Facility Term shall be for five (5) years commencing on the day following the Expiration Date of this Lease, as the same may be extended pursuant to Tenant's Renewal Option. Tenant shall have the perpetual right to renew the Bathroom Facility Lease for successive terms of five (5) years each (each renewal term shall be referred to herein as a "Bathroom Facility Renewal Term"), provided that:

a. Tenant provides Landlord with written notice to renew by no later than one (1) year prior to the expiration date of the Initial Bathroom Facility Term or applicable Bathroom Facility Renewal Term, as the case may be; and

b. Tenant, after any applicable grace periods have expired, is not in default under the Bathroom Facility Lease at the time Landlord receives Tenant's notice to renew; provided that if Tenant fails to cure any default existing as of the date the notice is given within the applicable grace periods, Landlord, at its option, may declare Tenant's notice to renew (pursuant to subsection 51.C.1.a.) to be null and void.

2. The base rent and rent adjustments for the Bathroom Facility Areas during the Initial Bathroom Facility Term and subsequent Bathroom Facility Renewal Terms shall be:

a. an annual base rent rate of $17.45 per square foot;

b. a CPI (as defined in this Lease) amount for each lease year of $53,802.00 ($7.00 X 7,686) multiplied by the percentage of increase by which the CPI for April of any lease year (including, without limitation for the first lease year) of the Bathroom Facility Lease during the Initial Bathroom Facility Term or subsequent Bathroom Facility Renewal Terms exceeds the CPI for the Bathroom Facility Base Year (defined below); c. an amount equal to Tenant's Bathroom Facility Areas Proportion (defined below) of Expenses during each lease year of the Initial Bathroom Facility Term or subsequent Bathroom Facility Renewal Terms;

d. an amount equal to Tenant's Bathroom Facility Areas Proportion (defined below) of Taxes during each lease year of the Initial Bathroom Facility Term or subsequent Bathroom Facility Renewal Terms.

3. Tenant and Landlord shall have the same rights and obligations under the Bathroom Facility Lease with respect to the Bathroom Facility Areas as is set forth in Section II of this Lease with respect to the Premises;

4. Landlord shall use reasonable efforts to provide Tenant with the same rights and obligations under the Bathroom Facility Lease with respect to the Bathroom Facility Areas as is set forth in Section 16 and Section 39 of this Lease with respect to the Premises;

5. Tenant shall have the right to record a short form memorandum of the Bathroom Facility Lease on a form acceptable to Landlord and Tenant;

6. Tenant shall be solely responsible for the repair and maintenance

47

of the Bathroom Facility areas and for the removal of the Bathroom Facility Areas in accordance with subsection 51.E. below.

7. Except as to any terms and conditions specifically provided herein, Landlord shall prepare the Bathroom Facility Lease on the standard form lease being used by Landlord at the Expiration Date of this Lease, with such changes as Tenant may reasonably request or as may be necessary to conform with any provision hereof.

D. Execution counterparts of the Bathroom Facility Lease shall be delivered to Tenant for execution within a reasonable time after Landlord's receipt of Tenant's initial notice of its intent to exercise its rights with respect to the Bathroom Facility Areas. Landlord and Tenant shall proceed with due diligence to arrive at a final negotiated version of the Bathroom Facility Lease Specifically including the terms set forth in subsection 51.C. hereof.

E. Notwithstanding anything in subsection 9.K. hereof to the contrary, if Tenant does not exercise its right to lease the Bathroom Facility Areas, Tenant shall, upon the Expiration Date or earlier termination of this Lease, remove the Facilities in the Bathroom Facility Areas and Tenant shall restore the Premises to the condition that existed on the execution of this Lease insofar as the Premises were altered to permit the installation of the Facilities in the Bathroom Facility Areas. Notwithstanding anything in subsection 9.K. hereof to the contrary, if Tenant exercised its rights to lease the Bathroom Facility Areas, Tenant shall, prior to the Expiration Date or earlier termination of the Bathroom Facility Lease, remove the facilities in the Bathroom Facility Areas and restore the Bathroom Facility Areas to the condition that existed at the execution of this Lease insofar as the Premises were altered to permit the installation of the Facilities in the Bathroom Facility Areas. If Tenant fails to remove the Facilities in the Bathroom Facility Areas and restore the Premises or the Bathroom Facility Areas, as the case may be, as provided herein, Landlord shall have the right to perform such work at Tenant's sole cost and expense.

F. For the purpose of this Section 51:

1. "Bathroom Facility Base Year" means the calendar month of April, 1988;

2. "Bathroom Facility Areas Proportion" means the percentage derived by dividing the then current rentable area of the bathroom Facility Areas by the Rentable Area of the Building and multiplying by one hundred (100).

52. Elevators.

Tenant acknowledges that the vertical transportation system of the Building ("Elevators") is not designed to handle traffic to and from the Trading Floor and Related Facilities thereto ("Related Facilities" defined as Member coatrooms, mailrooms and such) or traffic in excess of that commonly associated with general office use. Therefore, notwithstanding anything in subsection
4.A.3. hereof to the contrary, if by reason of such traffic the vertical transportations system becomes overburdened, Tenant acknowledges that Landlord will not be responsible for such overburdening.

48

53. Concurrent Exercise of Options.

With respect to Tenant's options under Sections 46,47,51 and the Support Space Supplement to lease the Escalator Areas, Telecommunications Areas, the Bathroom Facilities, the Lobby Space, the M-1 Space and the UPS Space, such options may be exercised in any combination and if the exercise of an option with respect to one such space includes a portion of another such space, a separate option exercise with respect to the included portion of such other space shall not be necessary, and Base Rent and Rent Adjustments, if any, shall not apply more than once (even if under more than one Section of the Lease) to any such space.

54. Landlord's Execution of Documents.

Any provision contained in this Lease and the Support Space Supplement which requires Tenant to execute and return to Landlord any amendments, supplements, leases or other than notices (collectively referred to in this
Section 54 only as "Documents") within a specified period of time, shall apply with equal force to Landlord with regard to the execution by Landlord and return to Tenant of the Documents after receipt by Landlord from Tenant. In the event that Landlord fails to execute and return to Tenant any Documents within the applicable time period, Tenant, at any time after such period but prior to its receipt of the fully executed Documents from Landlord shall have the right to revoke its delivery and withdraw its execution of such Documents by serving Landlord with written notice thereof.

49

IN WITNESS WHEREOF, the parties hereto shall be deemed to have executed this Lease on the date first above written.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, a national banking association of
Chicago, Illinois, not individually but
solely as Trustee under the provisions of a
certain Trust Agreement dated June 2, 1981
and known as Trust No. 51234.

ATTEST:

By /s/                              By /s/
   ------------------------------      ----------------------------
   Title Asst.                         Title Vice President
        -------------------------           -----------------------


ATTEST OR WITNESS:                                 TENANT
                                   CHICAGO MERCANTILE EXCHANGE, an Illinois
                                   not-for-profit corporation


By /s/                              By /s/
   ------------------------------      ----------------------------
   Title Sr. VP. Admin. & Finance      Title Chairman
        -------------------------           -----------------------

50

FIRST AMENDMENT

THIS FIRST AMENDMENT (the "Amendment") is made and entered into as of NOV 01 1999, by and between EOP -10 & 30 SOUTH WACKER, L.L.C., a Delaware limited liability company, as beneficiary of land trust dated October 1, 1997, and known as American National Bank and Trust Company of Chicago Trust No. 123434-06 ("Landlord") and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH

A. WHEREAS, Landlord (as successor in interest to American National Bank and Trust Company of Chicago, Illinois, a national banking association of Chicago, Illinois, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated June 2, 1981, and known as Trusty No. 51234) and Tenant are parties to that certain lease dated the 31st day of March, 1988 (the "Lease"), for space currently containing approximately 175,660 rentable square feet (the "Original Premises") described as being on the 2nd through 10th floors inclusive, in the building commonly known as 10 South Wacker Drive and the address of which is 10 South Wacker Drive, Chicago, Illinois (the "Building"); and

B. WHEREAS, Tenant has requested that additional space containing approximately 8,242 rentable square feet on the 31st floor of the Building shown on Exhibit A hereto (identified below as Expansion Space I and Expansion Space II and collectively referred to herein as the "Expansion Space") be added to the Original Premises and that the Lease be appropriately amended and Landlord is willing to do the same on the terms and conditions hereinafter set forth;

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Landlord and Tenant agree as follows:

I. Expansion and Effective Date. Effective as of Expansion Effective Date II (as hereinafter defined) the Premises, as defined in the Lease, is increased to 183,902 rentable square feet which shall include 175,660 rentable square feet on the 2nd through 10th floors inclusive and 8,242 rentable square feet on the 31st floor by the addition of the Expansion Space. From and after Expansion Effective Date I, the Original Premises and Expansion Space Il, collectively, shall be deemed the Premises, as defined in the Lease. From and after Expansion Effective Date II, the Original Premises, Expansion Space I and Expansion Space II collectively, shall be deemed the Premises as defined in the Lease. The lease term for each expansion space shall commence on the applicable expansion effective date set forth below and end on December 31, 2001 (the "Expansion Expiration Date"). The Expansion Space is subject to all the terms and conditions of the Lease except as expressly modified herein and except that Tenant shall not be entitled to receive any allowances, abatements or other financial concessions granted with respect to the Original Premises unless such concessions are expressly provided for herein with respect to the Expansion Space.

A. The expansion effective date shall be January 1, 2000 ("Expansion Effective Date I") for 6,947 rentable square feet of the Expansion Space ("Expansion Space I") and April 1, 2000 ("Expansion Effective Date II") for 1,295 rentable square feet of the Expansion Space ("Expansion Space II").

B. Expansion Effective Date I shall be delayed to the extent that Landlord fails to deliver possession of Expansion Space I for any reason, including but not limited to, holding over by prior occupants. Expansion Effective Date II shall be delayed on a day for day basis measured from January 1, 2000 to the extent that Landlord fails to deliver possession of Expansion Space II on or before January 4, 2000, for any reason, including but not limited to, holding over by prior occupants. Any such delay in either expansion effective date shall not subject Landlord to any liability for any loss or damage resulting therefrom. If either expansion effective date is delayed, the Expiration Date hereunder shall not be similarly extended.

II. Monthly Base Rent. In addition to Tenant's obligation to pay Base Rent for the Original Premises, Tenant shall pay Landlord the Base Rent for the Expansion Space as follows:

1

Expansion Space I

                     Annual Rate             Annual                    Monthly
Period            Per Square Foot           Base Rent                 Base Rent
------            ---------------           ---------                 ---------
01/01/00-             $20.00                $138,939.96               $11,578.33
12/31/00

01/01/01-             $20.60                $143,108.16               $11,925.68
12/31/01


             Expansion Space II

                     Annual Rate             Annual                    Monthly
Period            Per Square Foot           Base Rent                 Base Rent
------            ---------------           ---------                 ---------
Expansion             $20.00                $25,899.96                $2,158.33
Effective Date
II - 12/31/00
                      $20.60                $26,676.96                $2,223.08
01/01/01-
12/31/01

All such Base Rent shall be payable by Tenant in accordance with the terms of this Section 2 of the Lease.

III. Tenant's Proportion. For the period commencing with Expansion Effective Date I for Expansion Space I and ending on the Expansion Expiration Date, Tenant's Proportion for Expansion Space I is 0.7341%. For the period commencing with Expansion Effective Date II for Expansion Space II and ending on the Expansion Expiration Date, Tenant's Proportion for Expansion Space II is 0.1368%.

IV. Rent Adjustment. For the period commencing with Expansion Effective Date I and ending on the Expansion Expiration Date, Tenant shall pay Tenant's Proportion of Expenses and Taxes applicable to Expansion Space I in accordance with the terms of the Lease. For the period commencing with Expansion Effective Date II and ending on the Expansion Expiration Date, Tenant shall pay for Tenant's Proportion of Expenses and Taxes applicable to Expansion Space II in accordance with the terms of the Lease. Tenant shall not be obligated to Landlord for increases in CPI with respect to the Expansion Space.

V. Improvements to Expansion Space.

A. Condition of Expansion Space. Tenant has inspected the Expansion Space and agrees to accept the space "as is" without any agreements, representations, understandings, or obligations on the part of Landlord to perform any alterations, repairs or improvements.

B. Cost of Improvements to Expansion Space. Any construction, alterations or improvements made to the Expansion Space shall be made at Tenant's sole cost and expense. The improvements to the Expansion Space shall include, but not limited to, any demolition work in the Expansion Space desired by Tenant. In addition, Tenant specifically agrees to remove the safe currently located outside of the Premises on the 31st floor and dispose of the safe in the dumpster for the Building. If Tenant does not remove the safe by September 30, 1999, Landlord shall perform such work and bill Tenant for any costs associated therewith.

C. Responsibility for Improvements to Expansion Space. Any construction, alterations or improvements to the Expansion Space shall be performed by Tenant using contractors selected by Tenant and approved by Landlord and shall be governed in all respects by the provisions of Section 9 of the Lease. In any and all events, each Expansion Effective Date shall be postponed or delayed if the initial improvements to an Expansion Space are incomplete on the applicable Expansion Effective Date for any reason whatsoever. Any delay in the completion of initial improvements to the Expansion Space shall not subject Landlord to any liability for any loss or damage resulting therefrom.

VI. Early Access to Expansion Space. During any period that Tenant shall be permitted to enter the Expansion Space prior to the Expansion Effective Date (e.g., to perform alterations or improvements, if any) Tenant shall comply with all terms

2

and provisions of the Lease, except those provisions requiring payment of the Base Rent and Rent Adjustments as to the Expansion Space. If Tenant takes possession of Expansion Space II prior to Expansion Effective Date II for any reason whatsoever (other than the performance of work in the Expansion Space with Landlord's prior approval), such possession shall be subject to all the terms and conditions of the Lease and this Amendment, and Tenant shall pay Base Rent and Rent Adjustments applicable to Expansion Space II to Landlord on a per diem basis for each day of occupancy prior to Expansion Effective Date II. Expansion Space I was delivered to Tenant on or about September 13, 1999. Expansion Space II will be delivered to Tenant on or before January 1, 2000, subject to the provisions of Section I.B. above.

VII. LIMITATION OF LIABILITY. NOTWITHSTANDING ANYTHING TO THE CONTRARY CONTAINED IN THIS AMENDMENT OR THE LEASE, THE LIABILITY OF LANDLORD (AND OF ANY SUCCESSOR LANDLORD HEREUNDER) TO TENANT SHALL BE LIMITED TO THE INTEREST OF LANDLORD IN THE BUILDING, AND TENANT AGREES TO LOOK SOLELY TO LANDLORD'S INTEREST IN THE BUILDING FOR THE RECOVERY OF ANY JUDGEMENT OR AWARD AGAINST THE LANDLORD, IT BEING INTENDED THAT NEITHER LANDLORD NOR ANY MEMBER, PRINCIPAL, PARTNER, SHAREHOLDER, OFFICER, DIRECTOR OR BENEFICIARY OF LANDLORD SHALL BE PERSONALLY LIABLE FOR ANY JUDGEMENT OR DEFICIENCY.

VIII. Surrender of Possession. At the Expansion Expiration Date, Tenant shall surrender the Expansion Spaces to Landlord in accordance with Section 21 of the Lease.

IX. Other Pertinent Provisions. Landlord and Tenant agree that, effective as of the date hereof, the Lease shall be amended in the following additional respects:

Landlord's Addresses. Notwithstanding anything to the contrary contained in the Lease, Landlord's addresses for notices and payments of Rent are as follows:

Landlord:

EOP -10 & 30 South Wacker, L.L.C.
C/o Equity Office Properties Trust
30 S. Wacker Drive, Suite 3300
Chicago, Illinois 60606

Attention: Building Manager

With a copy to:

Equity Office Properties Trust Two North Riverside Plaza Suite 2200
Chicago, Illinois 60606 Attention: Regional Counsel-Central

Payments of Rent only shall be made payable to the order of:

Equity Office Properties

at the following address:

EOP Operating Limited Partnership

DBA 10 & 30 South Wacker Drive Dept. 77-72058
Chicago, Illinois 60678-2058

X. Miscellaneous.

A. This Amendment sets forth the entire agreement between the parties with respect to the matters set forth herein. There have been no additional oral or written representatives or agreements. Under no circumstances shall

3

Tenant be entitled to any Rent abatement, improvement allowance, leasehold improvements, or other work to the Premises, or any similar economic incentives that may have been provided Tenant in connection with entering into the Lease, unless specifically set forth in this Amendment.

B. Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

C. In the case of any inconsistency between the provisions of the Lease and this Amendment, the provisions of this Amendment shall govern and control.

D. Submission of this Amendment by Landlord is not an offer to enter into this Amendment but rather is a solicitation for such an offer by Tenant. Landlord shall not be bound by this Amendment until Landlord has executed and delivered the same to Tenant.

E. The capitalized terms used in this Amendment shall have the same definitions as set forth in the Lease to the extent that such capitalized terms are defined therein and not redefined in this Amendment.

F. Tenant hereby represents to Landlord that Tenant has dealt with no broker in connection with this Amendment except for The Levy Organization ("Broker"). Tenant agrees to indemnify and hold Landlord, its members, principals, beneficiaries, partners, officers, directors, employees, mortgagee(s) and agents, and the respective principals and members of any such agents
(collectively, the "Landlord Related Parties") harmless from all claims of any brokers, other than Broker, claiming to have represented Tenant in connection with this Amendment. Landlord hereby represents to Tenant that Landlord has dealt with no broker in connection with this Amendment. Landlord agrees to indemnify and hold Tenant, its members, principals, beneficiaries, partners, officers, directors, employees, and agents, and the respective principals and members of any such agents (collectively, the "Tenant Related Parties") harmless from all such claims of any brokers claiming to have represented Landlord in connection with this Amendment.

IN WITNESS WHEREOF, Landlord and Tenant have duly executed this Amendment as of the day and year first written above written.

LANDLORD: EOP-10 & 30 SOUTH WACKER, L.L.C., a
Delaware Limited liability company,
as beneficiary of land Trust dated
October 1, 1997, and known as
American National Bank and Trust
Company of Chicago Trust No.
123434-06

By: EOP Operating Limited Partnership, a
Delaware limited Partnership, its sole
member

By: Equity Office Properties Trust, a
Maryland real estate Investment
trust, its managing general partner

By: /s/ George Kohl
   -----------------------------
Name:   George Kohl
     ---------------------------
Title:  Vice President Leasing
      --------------------------

TENANT: CHICAGO MERCANTILE EXCHANGE, An
Illinois not-for-profit corporation

By: /s/ David Gomach
   ------------------------------------
Name: David Gomach
     ----------------------------------
Title: CFO
      ---------------------------------

4

Exhibit 10.16 Chicago Mercantile Exchange, Inc. Registration Statement on Form S-4

BUILDING: 30 SOUTH WACKER DRIVE

Chicago, Illinois

LEASE

AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, AS TRUSTEE
LANDLORD

CHICAGO MERCANTILE EXCHANGE,
an Illinois not-for-profit corporation

TENANT

100,000 Square Feet on the Upper Lobby Level and 2nd-6th Floors

PREMISES

May 11, 1981

DATE OF LEASE

THIS LEASE, made as of this 11th day of May, 1981,

between           AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, Illinois,
                  a national banking association of Chicago, Illinois, a
                  national banking association of Chicago, Illinois, not
                  individually but solely as Trustee under the provisions of a
                  certain Trust Agreement dated March 20, 1980 and known as
                  Trust No. 48268.

(hereinafter known as "Landlord"), and
CHICAGO MERCANTILE EXCHANGE,
an Illinois not-for-profit corporation

(hereinafter known as "Tenant"):

WITNESSETH:

THAT Landlord hereby leases to Tenant, and Tenant accepts the demised premises (hereinafter known as "demised premises" or "premises"), being 100,000 Square Feet on the Upper Lobby level and 2nd - 6th Floors and described in the plan attached hereto as Exhibits "A-1" - "A-6" in the building (hereinafter known as "Building"), known as 30 South Wacker Drive Chicago, Illinois, for the term of twenty (20) years unless sooner terminated as provided herein, commencing on the Commencement Date (defined in Section 2(a) (xxvi)) and ending twenty (20) years thereafter ("Termination Date"),

to be occupied and used by Tenant for general offices of a mercantile exchange (and other uses associated therewith) and no other purpose, subject to the agreements herein contained.

IN CONSIDERATION THEREOF, THE PARTIES COVENANT AND AGREE:

1. BASE RENT. Tenant shall pay as Base Rent to JMB/MS Management Co. at 111 East Wacker Drive, Chicago, Illinois, or to such other person or at such other place as Landlord may direct in writing, in lawful money of the United States of America, the sum of THIRTY-NINE MILLION FIVE HUNDRED THOUSAND ONE AND 60/100 Dollars ($39,500,001.60) in two hundred forty (240) equal monthly installments of ONE HUNDRED SIXTY-FOUR THOUSAND FIVE HUNDRED EIGHTY-THREE AND 34/100 Dollars ($164,583.34) in advance on or before the first day of each month of the term, except that Tenant shall pay the first such monthly installment on July 1, 1983. All such Base Rent shall be paid without any set-off or deduction whatsoever as otherwise provided in this lease. Unpaid Base Rent shall bear interest at the rate set forth in Section 24(f), from twenty (20) days after the date due until paid. Time is of the essence of this Lease. Tenant agrees to do and perform each and every covenant, agreement and obligation to be performed by Tenant hereunder.

2. RENT ADJUSTMENT. The Base Rent shall be adjusted in accordance with the provisions of this Section 2.

(a) For purposes of this Lease:

(i) "Base Year" means the portion of the calendar year for the period commencing on the Commencement Date and ending on December 31st of the calendar year in which the Commencement Date occurs.

(ii) "Calculation Year" means the calendar year for which a Rent Adjustment computation is being made.

1

(iii) "Consumer Price Index" ("CPI") means the average of:
1) U.S. City Averages for all Urban Consumers. All Items, of the United States Bureau of Labor Statistics: and 2) U.S. City Averages for Urban Wage Earners and Clerical Workers. All items, of the United States Bureau of Labor Statistics. The CPI for any calendar year for portion thereof in the [unreadable text] of the Base Year and the last calendar year of the Lease term) shall be determined by first averaging the monthly indices for each index and then averaging the two indices (All Items).

(iv) "Expenses" means and includes: 1) those expenses paid or incurred by Landlord for maintaining, operating and repairing the Real Property, the cost of electricity, steam, water, fuel, heating, lighting, air conditioning, window cleaning, janitorial service, insurance, including but not limited to, fire, extended coverage, liability, workmen's compensation, elevator, or any other insurance carried in good faith by Landlord and applicable to the Real Property, painting, uniforms, customary management fees, supplies, sundries, sales or use taxes on supplies or services, cost of wages and salaries of all persons engaged in the operation, maintenance and repair of the Real Property, and so-called fringe benefits, including social security taxes, unemployment insurance taxes, cost for providing coverage for disability benefits, cost of any pensions, hospitalization, welfare or retirement plans, or any other similar or like expenses incurred under the provisions of any collective bargaining agreement, or any other cost or expense which Landlord pays or incurs to provide benefits for employees so engaged in the operation, maintenance and repair of the Real Property, the charges of any independent contractor who, under contract with Landlord or its representatives, does any of the work of operating, maintaining or repairing of the Real Property, legal and accounting expenses, including, but not to be limited to, such expenses as relate to seeking or obtaining reductions in and refunds of Taxes (which Landlord shall use reasonable efforts to obtain) , or any other expense or charge, whether or not hereinbefore mentioned, which in accordance with generally accepted accounting and management principles would be considered as an expense of maintaining, operating, or repairing the Real Property, and 2) the amortized portion of the cost of any capital improvement made to the Real Property which is either required by law (or governmental regulation) or reasonably intended by Landlord to reduce Expenses. Such amortization shall be in accordance with generally accepted accounting principles and include interest at the prime rate in effect on the date of installation of the capital improvement. The term "Expenses" shall not include: (I) leasing brokerage commissions, (ii) promotional and other expenses related to the leasing of space in the Building, (iii) expenses for an individual tenant for which Landlord is reimbursed directly by such other tenant, (other than through Rent Adjustments), (iv) items paid by insurance or utility charges billed directly to tenants by Landlord, (v) repairs or replacements caused by fire or other casualty, (vi) the cost of tenant alterations or improvements, (vii) depreciation and debt service, (viii) management overhead and fees not related to the Building or the Real Property. If the Building is not fully rented during all or a portion of any calendar year, Landlord shall make an appropriate adjustment of the Expenses, for each calendar year employing sound accounting and management principles, to determine the amount of Expenses that would have been paid or incurred by Landlord had the Building been fully tented; and the amount so determined shall be deemed to have been the amount of Expenses for each calendar year, provided however, for the calendar year in which the first (1st) Anniversary occurs, this procedure shall be employed only for the period commencing on the first (1st) Anniversary and ending on December 31st. If any Real Property expense, though paid in one year, relates to more than one calendar year, at the option of Landlord such expense may be proportionately allocated among such related calendar years.

(v) "Real Property" means the Building, the land parcel upon which it stands and the personal property used in conjunction with both.

(vi) "Rent Adjustment" means any amount owed by Tenant resulting from increases in CPI, Expenses or Taxes. The Rent Adjustment shall be paid in addition to and in the same manner as Base Rent. Landlord's corrections for the expense and tax portion of the rent adjustment from all tenants in the Building including Tenant and Members may not exceed 100% of the total Building Rent Adjustments for Expenses and Taxes. The portion of the Building Rent Adjustments attributable to Expenses and Taxes billed to retail tenants, in the Building (including the Club (Section 38) and Retail Space (Section 36)) shall be deducted from the Building total for purposes of calculating Tenant's proportionate amount under this Lease.

(vii) "Rentable Area of the Building" is 993,040 square feet which is the sum of the rentable area of all demised premises (leased or unleased) in the Building on floors designated by Landlord as office floors.

(viii) "Rentable Area of the demised premises" is 100,000 square feet which: 1) if this Lease is for an entire office floor, is the area of the entire floor inside the center line of the exterior glass walls (except public stairs, elevator shafts, flues, stacks, pipe shafts and vertical ducts) plus a proportionate share of Building mechanical (HVAC) spaces above the lobby floor, or 2) if this Lease is for less than an entire office floor, is the area measured from the center line of the exterior glass walls to the center line of corridor partitions or other demising partitions plus a) a proportionate share of Building public areas (including corridors), toilets, mechanical (HVAC) spaces and janitors, electrical and telephone closets, on the floor housing the demised premises, and b) a proportionate share of Building mechanical (HVAC) spaces above the lobby floor. In either case, no deduction is made for columns or Building projections.

(ix) "Rent Adjustment Deposit" shall be equal to the Rent Adjustments due for the Calculation Year divided by the number of months within the Lease term in the Calculation Year.

(x) "Taxes" means real estate taxes, assessments, sewer rents, rates and charges, transit taxes, taxes based upon the receipt of rent, and any other federal, state or local governmental charge, general, special, ordinary or extraordinary (but not including income or franchise taxes or any other taxes imposed upon or

2

measured by Landlord's income or profits, unless the same shall be imposed in lieu of real estate taxes), which may now or hereafter be levied or assessed against the Real Property. In case of special taxes or assessments which may be payable in installments, only the amount of each installment paid during a calendar year shall be included in Taxes for that year. Taxes shall also include any personal property taxes (attributable to the year in which paid) imposed upon the furniture, fixtures, machinery, equipment, apparatus, systems and appurtenances used in connection with the Real Property for the operation thereof. The amount of Taxes attributable to any calendar year of the Lease term shall be the amount of Taxes payable in such year, notwithstanding that in each case the assessments for such Taxes may have been made for a different year or years than the year in which payable. In the event the Real Property is not assessed as fully improved for any year, then commencing on the first
(1st) Anniversary. Taxes shall be adjusted to the Taxes which would have been payable in such year if the assessment of the Real Property had been made on a fully improved basis provided however, for the calendar year in which the first (1st) Anniversary occurs, this procedure shall be employed only for the period commencing on the first (1st) Anniversary and ending on December 31st.

(xi) "Tenant's Proportion" is 10.070 and means the proportion the Rentable Area of the premises bears to the Rentable Area of the Building.

Section 2(a) is continued on page 3(a).

(b) If the CPI for the Base Year is less than the CPI for any calendar year of the Lease term, commencing with the calendar year in which the 37th month of the Lease term occurs, Tenant shall pay Landlord as a Rent Adjustment for each such calendar year, the sum of the Base Portion, Additional Portion and Constant Portion. For the calendar year in which the 37th month of the Lease term occurs, the CPI portion of the Rent Adjustment need be paid only for the period commencing on the first (1st) day of the 37th month and ending December 31st. (see example page 43 and limitation Section 54).

Section 2(c) intentionally omitted.

(d) If the total amount of Taxes and/or Expenses attributable to any calendar year of the Lease term is greater than $5,461,720.00 then Tenant shall pay Landlord as a Rent Adjustment for such calendar year, Tenant's Proportion of such amount.

(e) Tenant shall pay Landlord the Rent Adjustment Deposit in the same manner as Base Rent, on the first day of each month during the term of this Lease commencing with the first day of the calendar year following the calendar year in which this Lease commences. The Rent Adjustment Deposit shall be deposited against Rent Adjustments due for the calendar year next following the Calculation Year. During the last complete calendar year or during any partial calendar year which this Lease terminates, Landlord may include in the Rent Adjustment Deposit its estimate of Rent Adjustments which may not be finally determined until after the termination of this Lease.

(f) As soon as reasonably feasible after the expiration of each calendar year of this Lease, Landlord will furnish Tenant's statement (which has been audited by a Certified Public Accounting Firm) showing the following:

(i) Expenses, Taxes and CPI for the Calculation Year.

(ii) CPI for the Base Year;

(iii) The amount of Rent Adjustments due Landlord for the Calculation Year, less credits for Rent Adjustment Deposits paid, if any. If Landlord receives a reduction in the Taxes for any year and if Tenant has paid a Rent Adjustment based upon the taxes prior to the reduction, Tenant shall receive a refund of such adjustment paid which Landlord shall credit to Tenant's Base Rent account. Upon notice to Landlord, Tenant may request direct payment in lieu of such credit; and

(iv) The Rent Adjustment Deposit due in the calendar year next following the Calculation Year including the amount or revised amount due for the months prior to the rendition of the statement. Tenant may request and obtain a copy of auditor's certification.

(g) If the Lease term commences on any day other than the first day of January, or if the Lease term ends on any day other than the last day of December, any Rent Adjustment payment due Landlord shall be prorated, and Tenant shall pay such amount within thirty (30) days after being billed. This covenant shall survive the expiration or termination of this Lease.

(h) If the Bureau of Labor Statistics substantially revises the manner in which the CPI is determined, Landlord shall use the CPI as revised. If however, the 1977 average shall no longer be used as an index of 100, such change shall constitute a revision which will entitle Landlord to produce results equivalent, as nearly as possible, to those which would be obtained if the 1977 average were still being used as an index of 100. If such CPI becomes unavailable to the public because publication is discontinued, or otherwise, Landlord and Tenant shall substitute therefor, a comparable index based upon changes in the cost of living or purchasing power of the consumer dollar published by any other governmental agency or, if no such index is available, then a comparable index published by a major bank, other financial institution, university or recognized financial publication.

3

Section 2(a) continued: **continued on page 42(a)

2(a)(xii) "Trading Floor" is the floor to be constructed abutting the Building.

Tenant agrees:
1. to equip and outfit the Trading Floor for use and operation as the trading floor of the Chicago Mercantile Exchange, and
2. to open for business in the Trading Floor as the trading floor of the Chicago Mercantile Exchange on or prior to the later of:
i. eighteen (18) months after purchase of the Trading Floor pursuant to Trading Floor Agreement referred to in section 34.C., or
ii. July 31, 1985 as extended by Force Majeures but not later than April 1, 1987.

(xiii) "Phase II Tower" is the tower of a building which may be constructed on the property immediately north of the Building. It is understood that the Phase II Tower may never be built.** (continued on page 42(a))

(xiv) "Anniversary" means the annual recurrence of the Commencement Date.

(xv) "Base Rent Rate Per Square Foot" means the sum calculated as follows:

(current monthly installment
of Base Rent) x 12
----------------------------  = Base Rent Rate
(current Rentable Area of       Per Square Foot
the demised premises)

(xvi) "Rent Adjustment Rate Per Square Foot" means the sum calculated as follows:

(Rent Adjustments attributable
to current month) x 12
------------------------------- = Rent Adjustment
(current Rentable Area of the     Rate Per Square
demised premises)                 Foot

(xvii) "Prevailing Market" is, and at any time shall be determined by considering leases for "as-is" space ("As-Is Leases") being entered into at such time in the Building or the Phase II Tower giving appropriate consideration to rate per square foot, escalation and abatement provisions, if any, length of lease term, size and location of premises being leased, work or allowances, if any, and other applicable terms and conditions of tenancy; provided however, there shall be excluded from a consideration of Prevailing Market As-Is Leases entered into under "special circumstances" which includes the following (among others):

1. Landlord being forced to lease
2. a term of less than five (5) years
3. options encumbering the space being leased
4. awkward or unusual shape
5. lack of windows.

If no As-Is Leases are then being entered into in the Building or Phase II Tower the same process stated in the preceding sentence shall be used by As-Is Leases in reasonably similar neighboring first class high rise office buildings shall be the ones considered. When this Lease and Member's leases are amended to reflect Prevailing Market, such leases shall be amended, as required, to reflect any changes in rate per square foot, escalation, abatement, lease term, size and location of premises, work or allowances and any other applicable terms and conditions of tenancy.

(xviii) "Force Majeure" means interruptions or delays caused by; war, insurrection, civil commotion, riots, acts of God or enemy, governmental action, strikes, lockouts, picketing (legal or illegal), accidents, inability of Landlord to obtain fuel, supplies or materials, or any other cause or causes beyond the control of Landlord.

(xix) "Acts of Tenant" means interruptions or delays caused by; acts, defaults or omissions of Tenant, special work, changes,

3(a)


alterations or additions required or made by Tenant in the layout or finish of the premises or the Building, Tenant's delay in submitting plans, supplying information, approving plans, specifications or estimates or giving authorizations or Tenant's request for items requiring long delivery periods.

(xx) "Ready for Occupancy" means that state of readiness when only minor insubstantial details of construction, decoration or mechanical adjustments remain to be done in the premises or any part thereof or the Building (excluding Tenant work in places other than the demised premises and in any portion of the demised premises being constructed by a general contractor other than Metropolitan Structures, Inc.). In the event of dispute as to whether the premises are Ready for Occupancy, the decision of Landlord's architect shall be final and binding on Landlord and Tenant.

(xxi) "Base Portion" means the product derived by multiplying thirty percent (30%) of the Base Rent due for a Calculation Year (which shall not be diminished by credits) by the quotient of the following division: the CPI for the Base Year, and the remainder thereof divided by the CPI for the Base Year.

Base Portion = 30% x Base Rent x (Calculation Year CPI minus)
(Base Year CPI )

(--------------------------)

( Base Year CPI )

(xxii) "Additional Portion" means;

1. (a) through December 31st of the calendar year in which the 120th month of the Lease term occurs, the product derived by multiplying the CPI portion of the Rent Adjustment for the calendar year prior to the Calculation Year by thirty percent (30%) and multiplying the product so derived by the quotient of the following division: the CPI in such Calculation Year less the CPI for the Base Year, and the remainder thereof divided by the CPI for the Base Year.

Additional Portion = 30% x (CPI portion  )   (Calculation Year)
                           (of Rent Ad-  )   (CPI minus Base  )
                           (justment for ) x (Year CPI        )
                           (calendar year)   ------------------
                           (prior to Cal-)      Base Year CPI
                           (culation Year)

(b) In no event shall the quotient referred to in
2(a) (xxii)(1)(a) exceed the following limitation factor in the year indicated:

CALENDAR YEAR                                              LIMITATION
OF LEASE TERM                                              FACTOR
-------------                                              ----------
The calendar year in which the 13th month
of Lease term occurs                                          .06000

The next succeeding calendar year (i.e.,
the calendar year in which the 25th month
of the Lease term occurs)                                     .123600

                                      (3b)

The next succeeding calendar year                             .191016

The next succeeding calendar year                             .262477

The next succeeding calendar year                             .338226

The next succeeding calendar year                             .418519

The next succeeding calendar year                             .503630

The next succeeding calendar year                             .593848

The next succeeding calendar year                             .689479

The next succeeding calendar year                             .790848

2. (a) for the calendar year following the calendar year in which the 120th month of the Lease term occurs through the end of the original Lease term (not the Extension), the product derived by multiplying the CPI portion of the Rent Adjustment for the calendar year prior to the Calculation Year by thirty percent (30%) and multiplying the product so derived by the quotient of the following division: the CPI in such Calculation Year less the CPI for the calendar year in which the 120th month of the Lease term occurs, and the remainder thereof divided by the CPI for the calendar year in which the 120th month of the Lease term occurs.

Additional   30% x (CPI portion  )   (Calculation Year CPI    )
Portion    =       (of Rent Ad-  )   (minus CPI for calendar  )
                   (justment for ) x (year in which the 120th )
                   (calendar year)   (month of the Lease term )
                   (prior to Cal-)   (occurs                  )
                   (culation Year)   (----------------------- )
                                     (CPI for calendar year   )
                                     (in which the 120th month)
                                     (of the lease term occurs)

(b) In no event shall the quotient referred to in 2(a) (xxii)(2)(a) exceed the following limitation factor in the year indicated:

CALENDAR YEAR                                                    LIMITATION
OF LEASE TERM                                                      FACTOR
-------------                                                    ----------
The calendar year following the
calendar year in which the 120th month of the
Lease term occurs (i.e., the calendar year in
which the 132nd month of the Lease term occurs)                   .06000

The next succeeding calendar year (i.e.,
the calendar year in which the 144th month
of the Lease term occurs)                                         .123600

The next succeeding calendar year                                 .191016

The next succeeding calendar year                                 .262477

The next succeeding calendar year                                 .338226

The next succeeding calendar year                                 .418519

The next succeeding calendar year                                 .503630

The next succeeding calendar year                                 .593848

The next succeeding calendar year                                 .689479

The next succeeding calendar year                                 .790848

* See note to Section 2(a) (xxii) on page 3(e)

(3c)


(xxiii) "Constant Portion" means;

1. for the calendar year in which the 37th month of the Lease term occurs through December 31st of the calendar year in which the 120th month of the Lease term occurs, zero, and

2. for the calendar year following the calendar year in which the 120th month of the Lease term occurs through the end of the original Lease term, an amount equal to the Additional Portion for the calendar year in which the 120th month of the Lease term occurs. Note: This amount remains constant.

(xxiv) "General Conditions" means field office costs, clean up, data processing, hoisting, meals and travel, supervision, administration, accounting and secretarial services, rubbish removal, temporary enclosures, equipment rental, temporary services, and building permits.

(xxv) "Acts of a Member" means interruptions or delays caused by; acts, defaults or omissions of a member, special work, changes, alterations or additions required or made by a Member in the layout or finish of the premises or the Building, a Member's delay in submitting plans, supplying information, approving plans, specifications or estimates or giving authorizations or a Member's request for items requiring long delivery periods.

(xxvi) "Commencement Date" means the first day of the calendar month immediately following the month in which Landlord gives notice to Tenant that the demised premises are Ready for Occupancy (defined in Section 2(a) (xx)), provided however, that if the Commencement Date occurs before the first (1st) day of the month next following the twenty-eighth (28th) month after the month during which Landlord obtains a Foundation Permit, unless Tenant chooses to occupy and thereby establish the Commencement Date, the Commencement Date shall be deemed delayed until the first (1st) day of the month next following the twenty-eighth (28th) month after the month during which Landlord obtains a Foundation Permit.

(xxvii) "Additional Portion Rate Per Square Foot" means the quotient derived by dividing the Additional Portion for any calendar year by the then current Rentable Area of the demised premises.

(xxviii) "Constant Portion Rate Per Square Foot" means the quotient derived by dividing the Constant Portion for any calendar year by the then current Rentable Area of the demised premises.

(xxix) "Base Portion Rate Per Square Foot" means the quotient derived by dividing the Base Portion for any calendar year by the then current Rentable Area of the demised premises.

(xxx) "Holiday(s)" means national and state holidays including but not limited to: New Year's Day, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day.

(3d)


(xxxi) "Expansion Floor" is described in section 1.5 of the agreement called The Chicago Mercantile Exchange Center Easements, Reservations, Covenants and Restrictions, by and between American National Bank and Trust Company of Chicago, as Trustee under Trust No. 48268, American National Bank and Trust Company of Chicago, as Trustee under Trust No. 51234, American National Bank and Trust Company of Chicago, as Trustee under Trust No. 51235.

Note to Section 2(a) (xxii):

For the calendar year in which the twenty-fifth (25th) month of the Lease term occurs for the Second Reservation Space and the calendar year in which the forth-ninth (49th) month of the Lease term occurs for the First Reservation Space, for the purposes of calculating the Additional Portion (for such years only), the CPI portion of the Rent Adjustment (which is determined from the calendar year prior to such Calculation Year) shall be multiplied by the ratio of the number of months from the Commencement Date to December 31st of the first calendar year of the Lease bears to 12; e.g., if the Commencement Date is September 1, the ration is 4/12.

For the calendar year in which the sixtieth (60th) month occurs (for leases to Members with five (5) year terms) and for the calendar years in which the one hundred twentieth (120th) or two hundred fortieth (240th) month of the Lease term occurs (as appropriate for Members with ten (10) year terms, or Tenant) for the First Reservation Space and the 60th or the 120th month of the Lease term for the Second Reservation Space, for the purposes of calculating the Additional Portion (for such years only), the CPI portion of the Rent Adjustment
(which is determined from the calendar year prior to such Calculation Year)
shall be multiplied by the ratio of twelve (12) minus the number of months from the Commencement Date to December 31st of the first calendar year of the Lease term bears to 12, e.g., if the Commencement Date is September 1, the ratio is 8/12.

(3e)


Date Sent      Drawing No.     Drawing Date         Description
---------      -----------     ------------         -----------
12/31/81        A1 - A24         12/19/80        "Pricing" Drawings
 3/12/81        A1 - A22          3/09/81        "P.U.D." Drawings
 4/1/81         A1 - A22          3/09/81        "P.U.D." Drawings

Drawings Sent to The Levy Organization:

Date Sent      Drawing No.     Drawing Date         Description
---------      -----------     ------------         -----------
1/06/81         A1 - A24         12/19/80        "Pricing" Drawings
3/12/81         A1 - A22          3/09/81        "P.U.D." Drawings

Drawings Sent to Space/Management Programs:

Date Sent      Drawing No.     Drawing Date         Description
---------      -----------     ------------         -----------
1/30/81         A1 - A24         12/19/80        "Pricing" Drawings
2/06/81          -----            1/28/81        Preliminary 1/4" core plans
3/12/81         A1 - A22          3/09/81        "P.U.D." Drawings
3/19/81          -----            3/18/81        Preliminary Core Plans
                                                 for P-1, P-2, Floors 8, 9,
                                                 11 - 40
3/26/81          -----            3/26/81        Preliminary Low-Rise,
                                                 Floors #2 - 10
3/31/81         A - 43            3/31/81        Preliminary 2nd Floor
4/9/81          DSK-154A          1/19/81        Section Showing Escalators
4/16/81         A12, 13, 16
                to 25, 44         4/20/81        Preliminary Substructure
                                                 Permit Drawings
4/20/81         A1 - A44;         4/20/81        Caisson and Substructure
                S1-S16, except                   Permit Drawings

S3; Survey 1 & 2;
PC1; P1-P5; E2,E3
Pile Dyne Drawings 4/15/81 No. 1, 2 and 3

Attachment "C"


(i) Tenant or its representative shall have the right to examine Landlord's books and records with respect to the items in the statement of Expenses and Taxes during normal business hours at any time within forty-five (45) days following the furnishing of the statement to Tenant. Unless Tenant takes written exception to any item within ninety (90) days after the furnishing of the statement (which shall be noted on the item as "paid under protest"), such statement shall be considered as final and accepted by Tenant. Any amount due Landlord as shown on any such statement shall be paid by Tenant within thirty (30) days after it is furnished to Tenant. If an audit by tenant reveals an overcharge to Tenant in excess of five percent (5%), Landlord shall pay the cost of such audit.

3. SERVICE.

(a) Landlord, as long as Tenant is not in default under any of the covenants of this Lease, shall furnish:

(i) Air-cooling when necessary to provide a temperature condition required, in Landlord's judgment or required by law (or governmental regulation), for comfortable occupancy of the demised premises under normal business operation, daily from 7:00 A.M. to 6:00 P.M. (Saturdays 8:00 A.M. to 1:00 P.M.). Sundays and holidays excepted. Wherever heat generating machines or equipment are used by Tenant in the demised premises, which affect the temperature otherwise maintained by the air-cooling system, Landlord reserves the right to install supplementary air-conditioning units in the demised premises and the expense of installation shall be paid by Tenant. The expense resulting from the operation and maintenance of the supplementary air-conditioning systems shall be paid by Tenant to Landlord as additional Base Rent at rates fixed by Landlord. Landlord agrees to furnish heat to the demised premises, when required by law (or governmental regulation) for comfortable occupancy of the demised premises under normal business operation on business days from 7:00 A.M. to 6:00 P.M. and on Saturdays from 8:00 A.M. to 1:00 P.M. Upon prior written notice to Landlord, Tenant may request heating or air-cooling during hours other than those stated and Landlord shall provide such at Tenant's sole expense which shall be based upon Landlord's cost plus fifteen percent (15%) overhead and profit;

(ii) Landlord shall supply hot and cold water for use in lavatories it installs for use in common with other tenants or for full floor tenants. If Tenant desires water in the demised premises, cold water only shall be supplied from City of Chicago mains drawn through a line, meter, and fixtures installed by Tenant, at Tenant's expense, with Landlord's written consent. Tenant shall pay Landlord as additional Base Rent, at rates fixed by Landlord (Landlord's cost plus fifteen percent (15%) overhead and profit) charges for all water furnished in the demised premises. Tenant shall not waste or permit the waste of water. If Tenant fails to pay landlord's charges for water within twenty (20) days after billing. Landlord upon ten (10) days' notice, may in addition to any other remedy provided in this Lease, discontinue furnishing water. No such discontinuance shall be deemed an eviction or disturbance of Tenant's use of the demised premises or render Landlord liable for damages or relieve Tenant from any obligation under this Lease;

(iii) Passenger elevator service in common with Landlord and other tenants, daily from 7:00 A.M. to 6:00 P.M. (Saturdays to 1:00 P.M.). Sundays and holidays excepted, and on an emergency basis only, freight elevator service on common with Landlord and other tenants, daily from 7:00 A.M. to 5:00 P.M.. Saturdays, Sundays and holidays excepted [unreadable text] the way down at the Trading Floor and Expansion Floor levels. Such normal elevator service, passenger or freight, on an emergency basis only, if furnished at other times shall be optional with Landlord and shall never be deemed a continuing obligation. Landlord, however, shall provide limited passenger elevator service daily at all times such normal passenger service is not furnished provided further, that Tenant's freight elevator shall be available 24 hours per day. Operatorless automatic passenger and on an emergency basis only, freight elevator service shall be deemed "elevator service" within the meaning of this paragraph;

(iv) Janitor service and customary cleaning in and about the demised premises in accordance with Exhibit "D", Saturdays, Sundays and holidays excepted. Tenant shall not provide any janitor services or cleaning without Landlord's written consent and then only subject to supervision of Landlord and at Tenant's sole responsibility and by janitor or cleaning contractors or employees at all times satisfactory to Landlord;

(v) Window washing of all windows in the demised premises, both inside and out, at such times as shall be required in Landlord's sole judgment provided however, that the windows shall be washed no less than three (3) times per year, weather permitting;

Notwithstanding anything hereinafter contained in this Lease, there shall be no abatement or reduction of that portion of the Base Rent which represents the amount of the charges for supplementary air-conditioning and water in the demised premises pursuant to this section 3(a).

(b) All electricity used in the demised premises shall be supplied by the utility company serving the Building through a separate meter and be paid for by Tenant. Landlord shall not in any way be liable or responsible to Tenant for any loss or damage or expense which Tenant may sustain or incur if either the quantity or character of electric service is changed or is no longer available or suitable for Tenant's requirements. If such service be discontinued, such discontinuance shall not in any way affect this Lease or the liability of Tenant hereunder or cause a diminution of Base Rent or Rent Adjustments and the same shall not be deemed to be a lessening or diminution of services within the meaning of any law, rule or regulation now or hereafter enacted, promulgated or issued. Tenant shall receive such service directly from the utility company and Landlord hereby permits its wires and

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conduits to the extent available, suitable and safely capable, to be used for such purposes. Tenant shall make no alteration or additions to the electric equipment and/or appliances without the prior written consent of Landlord in each instance. Tenant may at its option, purchase from Landlord or its agent all lamps, bulbs, ballast and starters used in the demised premises after their initial installation. Tenant covenants and agrees that at all times its use of electric current shall never exceed the capacity of the feeders to the building or the risers or wiring installation;

(c) Landlord does not warrant that any of the services above mentioned will be free from interruptions caused by Force Majeure. Any such interruption of service shall never be deemed an eviction or disturbance of Tenant's use an possession of the premises or any part thereof, or render Landlord liable to Tenant for damages, or relieve Tenant from performance of Tenant's obligations under this Lease,
[unreadable text] any interruption in HVAC or any repairs, renewals, improvements or alterations to the demised premises cause the demised premises or any part thereof to be rendered untenantable or inaccessible by Tenant for more than thirty (30) consecutive business days, Landlord agrees that Base Rent and Rent Adjustments shall abate on a per diem basis for each day after such thirty (30) day period during which the premises or any part thereof are not tenantable or accessible prorated, however, in proportion to the portion of the demised premises which are so rendered untenantable or inaccessible to the total demised premises.

4. CONDITION OF PREMISES. Subject to the Work Letter attached to this Lease and a construction "punch list", Tenant's taking possession shall be conclusive evidence as against Tenant that the demised premises were in good order and satisfactory condition when Tenant took possession. No promise of Landlord to alter, remodel, decorate, clean or improve the demised premises or the Building and no representation respecting the condition of the demised premises or the Building have been made by Landlord to Tenant, unless the same is contained herein, or made a part hereof, or contained in a written document signed by Landlord or its Agent. This Lease does not grant any rights to light or air over property.

5. INTENTIONALLY OMITTED.

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6. USE OF PREMISES. Tenant shall occupy and use the demised premises during the term for the purpose above specified and none other:

(a) Tenant will not make or permit to be made any use of the demised premises which, directly or indirectly is forbidden by public law, ordinance or governmental regulation or which may be dangerous to persons or property, or which may invalidate or increase the premium cost of any policy of insurance carried on the Building or covering its operations and Tenant shall not do, or permit to be done, any act or thing upon the demised premises which will be in conflict with fire insurance policies covering the Building of which the demised premises form a part. Tenant, as its sole expense shall comply with all rules, regulations or requirements of the Illinois Inspection and Rating Bureau, or any other similar body, and shall not do, or permit anything to be done upon said premises, or bring or keep anything thereon in violation of rules, regulations or requirements of the Fire Department, Illinois Inspection and Rating Bureau. Fire Insurance Rating Organization or other authority having jurisdiction and then only in such quantity and manner of storage as not to increase the rate of fire insurance applicable to the Building;

(b) any sign installed in the demised premises shall be installed at Tenant's cost and if visible from outside of the demised premises in such manner, character and style as Landlord may approve in writing;

(c) Tenant shall not advertise the business, profession or activities of Tenant conducted in the Building in any manner which violates the letter of spirit of any code of ethics adopted by any recognized association or organization pertaining to such business, profession or activities and shall never use any picture or likeness of the Building in any circulars, notices, advertisements or correspondence without Landlord's express consent in writing, which consent shall not be unreasonably withheld;

(d) Tenant shall not obstruct, or use for storage, or for any purpose other than ingress and egress, the sidewalks, entrances, passages, courts, corridors, vestibules, halls, elevators or stairways of the Building;

(e) no bicycle or other vehicle and no dog or other animal or bird shall be brought or permitted to be in the Building or any part thereof;

(f) no noise, odor or litter, whether caused by Tenant, Tenant's customers, clients, invitees or guests, which is objectionable to Landlord or other occupants of the Building, shall emanate from the demised premises. Tenants shall not: I) create or maintain a nuisance on the demised premises, or ii) disturb, solicit or canvass any occupant of the Building, or iii) do any act tending to injure the reputation of the Building;

(g) Tenant shall not install any musical instrument or equipment in the Building, or any antennas, aerial wires or other equipment inside or outside the Building, without, in each and every instance, obtaining prior approval in writing by Landlord. The use thereof, if permitted, shall be subject to control by Landlord to the end that others shall not be disturbed or annoyed, provided however, the Tenant shall have the right at its sole expense to install and maintain a receiving and transmitting facility (antennae), including connections to the demised premises, in a location and manner and of a size and weight approved by Landlord, on the roof of the Building if Tenant first obtains all necessary permits and licenses from the City of Chicago and any other governmental agency having jurisdiction.

(h) Tenant shall not waste water by tying, wedging or otherwise fastening open any faucet;

(i) except as provided in Section 39, no additional locks or similar devices shall be attached to any door. No keys for any door other than those provided by Landlord shall be made. If more than two keys for one lock are desired by Tenant, Landlord may provide the same upon payment by Tenant. Upon termination of this Lease or of Tenant's possession, Tenant shall surrender all keys to the demised premises and shall make known to Landlord the explanation of all combination locks on safes, cabinets and vaults;

(j) Tenant assumes full responsibility for: (i) protecting the premises from theft, robbery and pilferage, (ii) keeping the premises secure, and (iii) locking the doors in and to the demised premises. Any damage resulting from neglect of this clause shall be paid for by Tenant. All property belonging to Tenant, or any person in the premises, which is in the Building or the premises, shall be there at the risk of Tenant or other person only, and Landlord, its beneficiaries. Owner and Owner's partners and their respective agents and employees shall not be liable for damage thereto or theft or misappropriation thereof. Tenant shall indemnify and hold Landlord, its beneficiaries, Owner and Owner's partners and their respective agents and employees harmless from any claims arising out of the above, including subrogation claims by Tenant's insurance carrier, except that nothing contained herein shall require Tenant to release, indemnify, or waive claims against Landlord or Owner for liability caused by the negligence of Landlord or Owner of their respective agents, servants or employees;

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(k) if Tenant desires telegraphic, telephonic, burglar alarm or signal service, Landlord will, upon request, direct where and how connections and all wiring for such service shall be introduced and run. Without such directions, no boring, cutting or installation of wires or cables is permitted. Landlord represents that the Building will contain facility which will permit Tenant to pull television cable for an in-house television system throughout the Building and for connection to the Trading Floor; provided however, that such facilities must, in Landlord's reasonable judgment fit and be compatible with the designed core structure of the Building. Landlord agrees that two (2) five-inch (5") cables shall fit and be comparable with the designed core structure of the Building;

(l) shades, draperies or other form of inside window covering must be of such shape, color and material as approved by Landlord;

(m) Tenant shall not overload any floor. Safes, furniture and all large articles shall be brought through the Building and into the demised premises at such times and in such manner as Landlord shall direct and at Tenant's sole risk and responsibility. Tenant shall list all furniture, equipment and similar articles to be removed from the Building, and the list must be approved at the Office of the Building or by a designated person before Building employees will permit any article to be removed;

(n) unless Landlord gives advance written consent in each and every instance. Tenant shall not install or operate any steam or internal combustion engine, boiler, machinery, refrigerating or heating device or air-conditioning apparatus in or about the demised premises, or carry on any mechanical business therein, or used the demised premises for housing accommodations or lodging or sleeping purposes, or do any cooking therein or install or permit the installation of any vending machines, or use any illumination other than electric light, or use or permit to be brought into the Building any inflammable oils or fluids such as gasoline, kerosene, naphtha and benzene, or any explosive or other articles hazardous to persons or property. Tenant is hereby granted permission to install kitchen facilities for use by Tenant's employees and invitees only. The expense of such kitchen facilities shall be the sole responsibility of Tenant and shall include among other costs: i) required venting and flues, and ii) an exhaust stack tap-in charge based upon Tenant's proportionate C.F.M. usage;

(o) Tenant shall not place or allow anything to be against or near the glass of partitions or doors of the demised premises which may diminish the light in, or be unsightly from, public halls or corridors;

(p) Tenant shall not install in the demised premises any equipment which uses a substantial amount of electricity without the advance written consent of Landlord. Tenant shall ascertain from Landlord the maximum amount of electrical current which can safely be used in the demised premises, taking into account the capacity of the electric wiring in the Building and the demised premises and the needs of other tenants in the Building and shall not use more than such safe capacity. Landlord's consent to the installation of electric equipment shall not relieve Tenant from the obligation not to use more electricity than such safe capacity;

(q) Tenant may not install carpet padding or carpet by means of a mastic without Landlord's approval.

(r) Tenant shall not conduct any auction, fire or "going out of business", or bankruptcy sales in or from the demised premises;

(s) Tenant shall lower and adjust the venetian blinds on the windows in the premises if such lowering and adjustment reduces the sun load;

(t) in addition to all other liabilities for breach of any covenant of this Section 6, Tenant shall pay to Landlord all damages caused by such breach and shall also pay to Landlord as additional Base Rent an amount equal to any increase in insurance premium or premium caused by such breach. Any violation of this Section 6 may be restrained by injunction. Tenant shall be liable to Landlord for all damages resulting from violation of any of the provisions of this
Section 6. Landlord shall have the right to make such reasonable rules and regulations as Landlord or its agent may from time to time adopt on such reasonable notice to be given as Landlord may elect.** Nothing in this Lease shall be construed to impose Landlord any duty or obligation to enforce provisions of this Section 6 or any rules and regulations hereafter adopted, or the terms, covenants or conditions of any other lease as against any other tenant, and Landlord shall not be liable to Tenant for violation of the same by any other tenant, its servants, employees, agents, visitors or licensees.

7. CARE AND MAINTENANCE. Subject to the provisions of Section 10, Tenant shall, at Tenant's own expense, keep the demised premises (excepting structural elements of the Building, the Building's mechanical or HVAC systems or exterior glass) in good order, condition and repair during the term*** If Tenant does not make repairs promptly and adequately, Landlord, after serving notice on Tenant and Tenant's failure to make such repair within ten (10) days, may, but need not, make repairs, and Tenant shall promptly pay the cost thereof,* Tenant shall pay Landlord for overtime and for any other expense incurred in the event repairs, alterations, decorating or other work in the demised premises are not made during ordinary business hours at Tenant's request.

* provided however, such notice and grace period shall not be necessary in cases of emergencies as determined by Landlord in the exercise of its sole discretion.

** Landlord will make reasonable efforts to apply rules equally to all tenants.
In the event a conflict between rules and this Lease occurs, the Lease shall control.

*** excepting repairs required as a result of Landlord's conduct or the conduct of another tenant.

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8. ALTERATIONS AND CONSTRUCTION.

(a) Tenant may not do any work ("Work") in the demised premises such as, but not limited to, erecting partitions, making alterations or additions, nailing, boring or screwing into the ceilings, walls or floors, without the prior written consent of Landlord in each and every instance provided however, that a cosmetic alteration such as painting, decorating, [unreadable text] or hanging pictures does not require the approval of Landlord [unreadable text] it is visible from the exterior of the demised premises or the Building and provided further, Landlord's consent shall not be unreasonably withheld in cases of other alterations not visible from the exterior of the premises or the Building. Under such circumstances however, compliance with this
Section 8 is required. The decision of Landlord to refuse such consent unless otherwise provided shall be conclusive, in order to obtain such consent. Tenant shall furnish Landlord (i) plans and specifications for the Work (which Tenant warrants is in conformance with all applicable laws and is consistent in all respects with the aesthetics, structural and mechanical systems of the Building), (ii) names and addresses of contractors ("Contractors") and subcontractors ("Subcontractors"),
(iii) copies of contracts with Contractors and Subcontractors which shall provide, among other things, that no charges, amendments, extras or additional work are permitted without the consent of Landlord, and
(iv) affidavits from engineers acceptable to Landlord stating that the Work will not in any way adversely affect any mechanical system in the Building, such as, but not limited to, the heating, ventilating, air- conditioning or electrical systems. Landlord reserves the right to deny any Contractor or Subcontractor entry to the Building but Landlord's failure to exercise this right shall not be deemed an approval of either the financial stability or quality of workmanship of any such Contractor of Subcontractor.

(b) If Landlord grants such consent, all Work shall be performed in a workmanlike manner (and materials furnished shall be of a like quality to those in the Building) and either by or under the supervision of Landlord but at the sole expense of Tenant. Subsequent to the granting of such consent but before the commencement of the Work or delivery of any materials onto the demised premises or into the Building, Tenant shall furnish Landlord (i) necessary permits, (ii) sworn Contractor affidavits listing all subcontracts with suppliers of materials and/or labor, with whom Contractors have contractual relations for the Work, and setting forth a summary of such contractual relationships, (iii) Subcontractor affidavits, (iv)*, (v) certificates of insurance form all Contractors and Subcontractors performing labor or furnishing materials, insuring against any and all claims, costs, damages, liabilities and expenses which may arise in connection with the Work, and (vi) such other documents as may be reasonably requested by Landlord. The certificates of insurance required must evidence coverage in amounts and from companies satisfactory to Landlord and may be cancelable only with ten (10) days advance notice to Landlord. If Landlord consents or supervises, such shall not be deemed a warranty as to the adequacy of the design or workmanship or quality of the materials and Landlord hereby disavows any responsibility and/or liability for such. Additionally, under no circumstances shall Landlord have any responsibility to repair or maintain any portion of the Work which either does not function or ceases to function.

(c) During construction of the Work, upon receipt by Landlord of waivers, mechanics' liens and percentage completion certificates from Tenant, Contractors and the architect, Landlord shall disburse the funds deposited pursuant to Paragraph 8(b) (iv) to the joint order of Tenant and Contractors.

(d) Upon completion of the Work, and prior to final payment, Tenant shall obtain the written approval of Landlord (which shall not be unreasonably withheld) for the quality of the Work and furnish Landlord with (i) Tenant, Contractors, and architectural completion affidavits, (ii) full and final waivers of lien, (iii) receipted bills covering all labor and materials expended and used, (iv) other appropriate documents evidencing completion of the Work, and (v) as-built plans of the Work.

(e) Tenant shall pay Landlord for use of elevators (except the use of Tenant's elevator) and/or hoists, during the Work, at the same rate being charged to other similar users. Tenant shall cooperate with Landlord in scheduling such use.

(f) If the Work is being done near the commencement of the Lease term, Tenant agrees to commence payment of Base Rent and Rent Adjustments upon the date and in the manner provided in this Lease notwithstanding any delay in completing the Work or the demised premises which may result from the performance of the Work by Tenant or its Contractors.

(g) Tenant shall procure, or cause to be procured, and pay for all permits, licenses, approvals, certificates and authorizations necessary to the prosecution and completion of the Work. All Work shall be done in strict accordance with all laws, ordinances, rules, regulations and requirements of the Board of Underwriters and all Municipal, State, Federal and other authorities having jurisdiction. Where drawings and specifications conflict with the law, the law is to be followed. Tenant shall promptly notify the respective departments or official bodies when the Work is ready for inspection and shall, at once, do all work required to remove any violations or to comply with such inspections, without additional charge to Landlord. Tenant shall perform, or cause to be performed, all work necessary to obtain approvals from authorities mentioned above without additional cost to Landlord.

(h) Tenant agrees to reimburse Landlord for all sums expended for examination and approval of the architectural and mechanical plans and specifications.

* 1. for Tenant and credit-worthy Members (to be determined solely by Landlord) indemnification in the form of an irrevocable Letter of Credit (drafted solely as Landlord determines) in a sum equal to the total value of the Work, and

2. for all other Members, indemnification in the form of cash in a sum equal to the total value of the Work.

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(i) Tenant agrees that the Work shall be performed so as not to cause or create any jurisdictional or other labor disputes, and in the event such disputes occur. Tenant shall immediately do whatever is necessary to resolve such disputes, at no expense to Landlord.

(j) Tenant hereby agrees to hold Landlord, its beneficiaries, Owner and Owner's partners and their respective agents and employees harmless from any and all liabilities of every kind and description, including reasonable attorney's fees which may arise out of or be connected in any way with the Work. Any mechanic's lien (or any notice preliminary to lien) filed against the demised premises, or the Real Property, for the Work or materials claimed to have been furnished to Tenant shall be discharged of record (or paid if a notice be served) by Tenant within ten (10) days after filing (or service) at the expense of Tenant provided however, that if Tenant has on deposit with Landlord one hundred fifty percent (150%) of the lien, in cash and otherwise holds Landlord harmless and indemnifies Landlord, tenant may contest the lien.

(k) All additions, decorations, fixtures, hardware, non-trade fixtures and all improvements, temporary or permanent, in or upon the demised premises, whether placed there by Tenant or Landlord, shall, unless Landlord requests their removal, become the property of Landlord and shall remain upon the demised premises at the termination of this Lease by lapse of time or otherwise without compensation, allowance or credit to Tenant. If, upon the request of Landlord, Tenant does not remove said additions, decorations, fixtures, hardware, non-trade fixtures and improvements, Landlord may remove them upon the expiration or termination of this Lease, provided however, that Tenant shall be responsible for the restoration of the premises to the condition in which they existed at the commencement date of this Lease, reasonable wear and tear and damage by fire or other casualty excepted.

9. ACCESS TO PREMISES. Tenant shall permit Landlord to erect, use and maintain pipes, ducts, wiring and conduits in and through the demised premises. Landlord or Landlord's agents shall have the right to enter upon the premises, to inspect the same, to perform janitorial and cleaning services and to make such repairs, alterations, improvements or additions to the premises or the Building as Landlord may deem necessary** and Landlord shall be allowed to take all material into and upon said demised premises that may be required therefore without the same constituting an eviction of Tenant in whole or in part and the Base Rent and/or Rent Adjustments shall in no wise abate (except as provided in
Section 10) while said repairs, alternations, improvements, or additions are being made, by reason of loss or interruption of business of Tenant, or otherwise,* If Tenant shall not be personally present to open and permit an entry into said demised premises, at any time, when for any reason an entry therein shall be necessary or permissible. Landlord or Landlord's agents may enter the same by a master key, or may forcibly enter the same, without rendering Landlord or such agents liable therefore (if during such entry Landlord or Landlord's agents shall accord reasonable care to Tenant's property), and without in any manner affecting the obligations and covenants of this Lease. Nothing herein contained, however, shall be deemed or construed to impose upon Landlord any obligations, responsibility or liability whatsoever, for the care, supervision or repair of the Building or any part thereof, other than as herein provided. Landlord shall also have the right at any time, without the same constituting an actual or constructive eviction and without incurring any liability to Tenant therefore, to change the arrangement and/or location of entrance or passageways, doors and doorways, and corridors, elevators, stairs, toilets or other public parts of the Building, and to close entrances, doors, corridors, elevators or other facilities. Landlord shall not be liable to Tenant for any expense, injury, loss or damage resulting from work done in or upon, or the use of, any adjacent or nearby building, land, street or alley. ***

10. UNTENANTABILITY. If the demised premises or the Building are made untenantable by fire or other casualty and if the Trading Floor has not been made untenantable or if it has been made untenantable and owner of Trading Floor contracts for and commences the Trading Floor's reconstruction, Landlord shall proceed with all due diligence to repair, restore or rehabilitation the Building or the demised premises at Landlord's expense in which event this Lease shall not terminate. If however, the demised premises or the Building, and the Trading Floor, are made untenantable by fire or other casualty and if owner of Trading Floor does not so contract or commence such reconstruction of the Trading Floor, Landlord may elect:

(a) to terminate this Lease as of the date of the fire or casualty by notice to Tenant within one-hundred fifty (150) days after date, or

(b) proceed with all due diligence to repair, restore or rehabilitate the Building or the demised premises at Landlord's expense, in which latter event this Lease shall not terminate, ****

In the event the Lease is not terminated pursuant to this provision, Base Rent and Rent Adjustments shall abate on a per diem basis during the period of untenantability. In the event of the termination of this Lease pursuant to this section, Base Rent and Rent Adjustments shall be apportioned on a per diem basis and paid to the date of the fire of other casualty. In the event that the demised premises are partially damaged by fire or other casualty but not made wholly untenantable, then Landlord shall, except during the last year of the term hereof proceed with all due diligence to repair and restore the demised premises and the Base Rent and Rent Adjustments shall abate in proportion to the untenantability of the demised premises during the period of

* provided however, that excepting emergency situations, Landlord shall exercise reasonable efforts not to interfere with the conduct of Tenant's business on the premises. In the event Landlord's access to the premises or any part thereof pursuant to this Section 9 causes the demised premises or any part thereof to be rendered untenantable or inaccessible excepting untenantability or inaccessibility resulting from fire or other casualty as stated in Section 10) by Tenant for more than thirty (30) consecutive business days, then Base Rent and Rent Adjustments shall abate on a per diem basis for each day after such thirty (30) day period during which the premises or any part thereof are not tenantable or accessible prorated, however, in proportion to the portion of the demised premises which are so rendered untenantable or inaccessible to the total demised premises.

** provided however, that if Landlord decreases the size of the demised premises, Base Rent and other appropriate items shall be appropriately reduced

*** Nothing contained herein shall require Tenant to release, indemnify, or waive claims against Landlord or Owner for liability caused by the negligence of Landlord or Owner or their respective agents, servants or employees.

**** provided however, if Landlord fails to repair, restore or rehabilitate demised premises within 270 days after the aforementioned 150 days, the Tenant shall have the right to terminate this Lease as of the date of said fire or casualty by serving notice on Landlord within ten (10) days after if Landlord fails to so repair, restore or rehabilitate within the 270 day period and such failure is the result of Force Majeure or Acts of Tenant the 270 day period shall be deemed extended for a period of time equal to the delay.

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untenantability. Notwithstanding anything hereinbefore contained in this Section 10 or in Section 10A, if a portion of the demised premises are made untenantable as aforesaid during the last year of the term hereof exercised [unreadable text] renewal option contain in Section 27 or its rights under Section 30. Landlord or Tenant shall have the right to terminate this Lease as of the date of the fire or other casualty by giving written notice thereof to the other within thirty
(30) days after the date of fire or other casualty, in which event the Base Rent and Rent Adjustments shall be apportioned on a per diem basis and paid to the date of such fire or other casualty.**

11. SUBROGATION. The parties hereto agree to use good faith efforts to have any and all fire, extended coverage or any and all material damage insurance which maybe carried endorsed with the following subrogation clause:
"This insurance shall not be invalidated should the insured waive in writing prior to a loss any or all right of recovery against any party for loss occurring to the property described herein"; and each party hereto hereby waives all claims for recovery from the other party for any loss or damage to any of its property insured under valid and collectible insurance policies to the extent of any recovery, collected under such insurance, subject to the limitation that this waiver shall apply only when it is either permitted or, by the use of such good faith efforts could have been so permitted by the applicable policy of insurance.

12. EMINENT DOMAIN. If a substantial portion of the Building, or a substantial part of the demised premises, shall be lawfully taken or condemned for any public or quasi-public use or purpose, or conveyed under threat of such condemnation, the term of this Lease shall end upon, and not before, the date of the taking of possession by the condemning authority, and without apportionment of the award. Current rent shall be apportioned as of the date of such termination. If any part of the Building, shall be so taken or condemned, or if the grade of any street or alley adjacent to the Building is changed by any competent authority and such taking or change of grade makes it necessary or desirable to demolish, substantially remodel, or restore the Building, Landlord shall have the right to cancel this Lease upon not less than ninety (90) days notice prior to the date of cancellation designated in the notice. No money or other consideration shall be payable by Landlord to Tenant for the right of cancellation, and Tenant may share in the condemnation award or in any judgment for damages caused by the change of grade, but only to the extent that unamortized portion of its leasehold improvements. Tenant may proceed independently in such proceedings if its chosen. If an insubstantial portion of the premises shall be lawfully taken or condemned or conveyed under threat of condemnation so that the premises can be used by Tenant for the purposes set forth in this Lease, and this Lease is not terminated by Landlord, Landlord shall repair the premises, and the Lease shall be amended to reduce Tenant's Proportion and Base Rent in the proportion of the amount taken.

** Section 10A, see page 42.

13. ASSIGNMENT - SUBLETTING.

(a) Tenant may sublet the demised premises or any part thereof but Tenant shall not, without Landlord's prior written consent:

(i) assign (other than to a successor* of Tenant under which circumstances Tenant's liability for the demised premises shall in no way be deemed modified, abrogated or amended), hypothecate, mortgage, encumber, or convey this Lease;

(ii) sublet to Members subsequent to the first ten (10) years of the Lease term; or (iii) otherwise permit the use or occupancy of the premises or any part thereof by anyone other than Tenant.

(b) If Tenant sublets the demised premises;

(i) the terms and conditions of this Lease, including among other things, the use provisions and Tenant's liability for the demised premises shall in no way be deemed modified, abrogated or amended.

(ii) Tenant shall pay Landlord as additional Base Rent, sixty percent (60%) of any excess rent (together with escalation) payable to and collected by Tenant under the sublease over the Base Rent plus Rent Adjustments payable to Landlord under this Lease, except that notwithstanding any other provision of this Lease, there shall be no abatement or reduction of Base Rent or Rent Adjustments as a result of amounts payable pursuant to clause (ii) of this Section 13(b).

* ("successor" means a successor exchange which succeeds to all or substantially all of the assets and goodwill of Tenant.)

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Such excess rent shall first be reduced by sixty percent (60%) of the following:

1. subletting commissions;
2. advertising or legal expenses involved in the subletting or in subsequently enforcing the terms thereof; and
3. Tenant's actual expenditures for improvements it is required to make as a result of the sublease except that such improvement expense for purposes of this reduction may not exceed sixty per cent (60%) of ten percent (10%) of any projected excess rent together with escalation;

(iii) Landlord shall be provided a copy of the subletting documents within ten (10) days after their complete execution;

(iv) the subletting documents must contain default provisions similar to those contained in this Lease and in the event of a default under the sublease Tenant agrees to use reasonable efforts to promptly enforce such provisions.

14. WAIVER OF CLAIMS AND INDEMNITY. To the extent permitted by law, Tenant releases Landlord, its beneficiaries, Owner and Owner's partners and their respective agents and servants from, and waives all claims for, damage to person or property sustained by Tenant or any occupant of the Building or premises resulting from the Building premises or any part of either or any equipment or appurtenance becoming out of repair or resulting from any accident in or about the Building, or resulting directly or indirectly from any act or neglect of any tenant or occupant of the Building or of any other person, including Landlord's agents and servants, but excluding the negligent acts or omissions of Landlord or Owner or their respective agents, servants or employees. This Section 14 shall apply especially, but not exclusively, to the flooding of basements or other subsurface areas, and to damage caused by refrigerators, sprinkling devices, air-conditioning apparatus, water, snow, frost, steam, excessive heat or cold, falling plaster, broken glass, sewage, gas, odors or noise, or the bursting or leaking of pipes or plumbing fixtures and shall apply equally whether any such damage results from the act of Landlord or the negligent acts or omissions of other tenants, occupants or servants in the Building or of any other person, and whether such damage be caused or result from any thing or circumstance above mentioned or referred to, or any other thing or circumstance whether of a like nature or of a wholly different nature. If any such damage, whether to the demised premises or to the Building or any part thereof, or whether to Landlord or to other tenants in the Building, results from any act or neglect of Tenant, its employees, agents, invitees or customers. Tenant shall be liable therefor and Landlord may, at Landlord's option, repair such damage and Tenant shall, upon demand by Landlord, reimburse Landlord forthwith for the total cost of such repairs. Tenant shall not be liable for any damage caused by its act or neglect if Landlord or a tenant has recovered the full amount of the damage from insurance and the insurance company has waived its right of subrogation against Tenant.*

Except to the extent proceeds are paid from Landlord's insurance, Tenant agrees to indemnify and save Landlord, its beneficiaries, Owner and Owner's partners and their respective agents and employees harmless against any and all claims, demands, costs and expenses, including reasonable attorneys' fees for the defense thereof, arising from Tenant's occupation of the demised premises or from any breach or default on the part of Tenant in the performance of any covenant or agreement on the part of Tenant to be performed pursuant to the terms of this Lease, or from any act or negligence of Tenant, its agents, servants, employees or invitees, in or about to demised premises. In case of any action or proceeding brought against Landlord, its beneficiaries, Owner and Owner's partners or their respective agents or employees by reason of any such claim, upon notice from Landlord, Tenant covenants to defend such action or proceeding by counsel reasonably satisfactory to Landlord. Nothing contained in this section 14 shall require Tenant to release, indemnify, or waive claims against Landlord or Owner for liability caused by the negligence of Landlord or Owner or their respective agents, servants or employees.

* Nothing contained in this section 14 shall require Tenant to release, indemnify, or waive claims against Landlord or Owner for liability caused by the negligence of Landlord or Owner or their respective agents, servants or employees.

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15. MORTGAGE - GROUND LEASE. Landlord may execute and deliver a mortgage or trust deed in the nature of mortgage, both sometimes hereinafter referred to as "Mortgage" against the Building, the Real Property or any interest therein, and may sell and lease back the underlying land on which the Building is situated, except that the rights of Tenant under this Lease shall be deemed superior to any mortgage or ground or underlying lease. If requested by the mortgagee or trustee or by the lessor of any ground or underlying lease (ground lessor), Tenant will either subordinate its interest in this Lease to said Mortgage, or ground or underlying lease or make the interest in this Lease superior, and will execute such agreement or agreements (including Exhibit "C") as may be reasonably required by such mortgagee, trustee or ground lessor, provided however, that as a condition precedent to Tenant's subordination, the mortgagee (or trustee) or ground lessor shall first provide Tenant with a Non-Disturbance and Attornment Agreement substantially in the form of attached Exhibit "C".

It is further agreed:

(a) Should any Mortgage affecting the Building or the Real Property be foreclosed or if any ground or underlying lease be terminated:

(i) The liability of the mortgagee, trustee or purchaser at such foreclosure sale or the liability of a subsequent owner designated as Landlord under this Lease shall exist only so long as such trustee, mortgagee, purchaser or owner is the owner of the Building or Real Property and such liability shall not continue or survive after further transfer of ownership.

(ii) Upon request of the mortgagee or trustee, Tenant (if Tenant has received Exhibit "C") will attorn, as Tenant under this Lease, to the purchaser at any foreclosure sale thereunder, or if any ground or underlying lease be terminated for any reason, Tenant will attorn as tenant under this Lease to the ground lessor under the ground lease and will execute such instruments as may be necessary or appropriate to evidence such attornment.

(b) This Lease may not be modified or amended so as to reduce the rent or shorten the term provided hereunder, or so as to adversely affect in any other respect to any material extent the rights of Landlord, nor shall this Lease be cancelled or surrendered, without the prior written consent, in each instance, of the ground lessor or the mortgagee.

(c) To the extent this Section 15 is inconsistent with Exhibit "C", Exhibit "C" shall be deemed controlling.

(d) At the request of any mortgagee, trustee or ground lessor, Tenant shall give notice of any default by Landlord hereunder to such mortgagee, trustee or ground lessor and such mortgagee, trustee or ground lessor shall have the right to cure such default within the applicable grace period provided herein, and provided further, that such grace period shall commence upon the giving of such notice by Tenant.

16. CERTAIN RIGHTS RESERVED TO LANDLORD. Landlord reserves and may exercise the following rights without affecting Tenant's obligations hereunder:

(a) to change the name or street address of the Building, provided however, if Landlord proposes such a change, it shall be subject to Tenant's approval which shall not be unreasonably withheld, provided further however, that either a tenant in the Building or Landlord may refer to the Building or use the address of 366 West Monroe without Tenant's approval. Landlord shall install and maintain a "Chicago Mercantile Exchange Center" sign on the exterior of the Building;

(b) to install and maintain a sign or signs on the exterior of the Building, provided however, such sign shall be subject to Tenant's approval which shall not be unreasonably withheld;

(c) to have access for Landlord and the other tenants of the Building to any mail chutes located on the demised premises according to the rules of the United States Post Office;

(d) to designate all sources furnishing coffee cart service used on the demised premises;

(e) to decorate, remodel, repair, alter or otherwise prepare the demised premises for reoccupancy if Tenant vacates the demised premises prior to the expiration of the term;

(f) to retain at all times pass keys to the demised premises;

(g) to grant to anyone the exclusive right to conduct any particular business or undertaking in the Building.*

(h) to exhibit the demised premises to others during the last 6 months of the term;

(i) to close the Building after regular working hours and on the legal holidays subject, however, to Tenant's right to admittance, under such reasonable regulations as Landlord may prescribe from time to time;

* provided however, that the granting of such exclusive rights shall not restrict or interfere with the conduct of Tenant's business on the demised premises and is subject to Section 35 of this Lease;

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which may include by way of example but not of limitation, that persons entering or leaving the Building identify themselves to a watchman by registration or otherwise and that said persons establish their right to enter or leave the Building;

(j) to approve the weight, size and location of safes or other heavy equipment or articles, which articles may be moved in, about, or out of the Building or premises only at such times and such manner as Landlord shall direct and in all events, however, at Tenant's sole risk and responsibility, subject, in all events, to the provisions of
Section 6(m).

(k) to take any and all measures, including inspections, repairs, alterations, additions and improvements to the premises or to the Building, as may be necessary for the safety, protection or preservation of the premises or the Real Property or Landlord's interests, or as may be necessary or desirable in the operation of the Real Property.*

Subject to Section 9, Landlord may enter upon the demised premises and may exercise any or all of the foregoing rights hereby reserved without being deemed guilty of an eviction or disturbance of Tenant's use or possession and without being liable in any manner to Tenant and without abatement of Base Rent or Rent Adjustments or affecting any of Tenant's obligations hereunder.

17. HOLDING OVER. If Tenant retains possession of the demised premises or any part thereof after the termination of the term or any extension thereof, by lapse of time or otherwise on the first day of each month Tenant so retains possession, Tenant shall pay Landlord the monthly Base Rent, plus Landlord's estimate of Rent Adjustments, at double the rate payable for the month immediately preceding said holding over computed on a per-month basis, for each month or part thereof (without reduction for any such partial month) that Tenant thus remains in possession, and in addition thereto, Tenant shall pay Landlord all damages, consequential as well as direct, sustained by reason of Tenant's retention of possession. The provisions of this paragraph do not exclude Landlord's right of re-entry or any other right hereunder.

18. LANDLORD'S REMEDIES. All rights and remedies of Landlord herein enumerated shall be cumulative, and none shall exclude any other right or remedy allowed by Law.

(a) To the extent permitted by law, if, at any time during the term of this lease (i) Tenant who is then the holder of this Lease shall file in any court a petition in bankruptcy or insolvency or for reorganization within the meaning of Chapter X or XII of the Bankruptcy Act of 1898 and/or Title 11, U.S. Code Bankruptcy Reform Act of 1978, or for arrangement within the meaning of Chapter XI of said Bankruptcy or Reform Act (or for reorganization or arrangement under any future Bankruptcy or Reform Act for the same or similar relief), or for the appointment of a receiver or trustee of all or a portion of Tenant's property, or (ii) an involuntary petition of the kind referred to in subdivision (i) of this sub-paragraph, shall be filed against Tenant, and such petition shall not be vacated or withdrawn within one hundred twenty (120) days after the date of filing thereof, or (iii) if Tenant shall make an assignment for the benefit of creditors, or (iv) if Tenant shall be adjudicated a bankrupt, or (v) a receiver shall be appointed for the property of Tenant by order of a court of competent jurisdiction (except where such receiver shall be appointed in an involuntary proceeding, if he shall not be withdrawn within one hundred twenty (120) days from the date of his appointment), then and in any such event Landlord may, if Landlord so elects but not otherwise, and with or without notice of such election, and with or without entry or other action by Landlord, forthwith terminate this Lease, and notwithstanding any other provisions of this Lease, Landlord shall forthwith upon such termination be entitled to recover damages in an amount equal to the then present value of Base Rent plus Rent Adjustments.

(b) If Tenant defaults in the payment of Base Rent, Rend Adjustment Deposits or Rent Adjustments and Tenant does not cure the default within twenty (20 days after written demand for payment of such Base Rent, Rent Adjustment Deposits or Rent Adjustments or if Tenant defaults in the prompt and full performance of any other provisions of this Lease, and Tenant does not cure the default within forty-five (45) days after written demand by Landlord that the default be cured (unless the default involves a hazardous condition, which shall be cured forthwith) or if the leasehold interest of Tenant be levied upon under execution or be attached by process of law, or if Tenant makes an assignment for the benefit of creditors or admits its inability to pay its debts, or if a receiver be appointed for any property of Tenant, or if Tenant abandons the premises, then and in any such event Landlord may, if Landlord so elects but not otherwise, and with or without notice of such election, and

* Material alterations to the premises (excepting alterations to the mechanical systems, HVAC or structure of the Building) not necessary to protect the Building or the health or safety of its occupants are subject to Tenant's approval which shall not be unreasonably withheld.

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with or without any demand whatsoever, either forthwith terminate this Lease and Tenant's right to possession of the premises or, without terminating this Lease, forthwith terminate Tenant's right to possession of the premises*

(c) Upon any termination of this Lease, whether by lapse of time or otherwise, or upon any termination of Tenant's right to possession without termination of the Lease, Tenant shall surrender possession and vacate the premises immediately, and deliver possession thereof to Landlord, and hereby grants to Landlord full and free license to enter into and upon the premises in such event with process of law and to repossess Landlord of the premises as of Landlord's former estate and to expel or remove Tenant and any others who may be occupying or within the premises and to remove any and all property therefrom, without being deemed in any manner guilty of trespass, eviction or forcible entry or detainer, and without relinquishing Landlord's rights to Base Rent or Rent Adjustments or any other right given to Landlord hereunder or by operation of law.

(d) Landlord may elect to terminate Tenant's right to possession only, without terminating the Lease, if Tenant fails to occupy or take possession of the premises or abandons or vacates the premises or otherwise entitles Landlord so to elect. Further, landlord may elect to enter into the premises, remove Tenant' signs and other evidences of tenancy, and take and hold possession thereof as in Paragraph (c) of this Section 18 provided, without such entry and possession terminating this Lease or releasing Tenant, in whole or in part, from Tenant's obligation to pay the Base Rent or Rent Adjustments hereunder for the full term, and in any such case Tenant shall pay forthwith to Landlord, if Landlord so elects, a sum equal to the entire amount of Base Rent and Rent Adjustments for the residue of the stated term plus any other sums then due hereunder. Upon and after entry into possession without termination of the Lease, Landlord may, but need not, relet the premises or any part thereof for the account of Tenant to any person, firm or corporation other than Tenant for such Base Rent, for such time and upon such terms as Landlord in Landlord's sole discretion shall determine, and Landlord shall not be required to accept any tenant offered by Tenant or to observe any instructions given by Tenant about such reletting. In any such case, Landlord may make reasonable repairs, alterations and additions in or to the premises, and redecorate the same to the extent deemed by Landlord necessary or desirable, and Tenant shall, upon demand, pay the cost thereof, together with Landlord's expenses of the reletting. If the consideration collected by Landlord upon any such reletting for Tenant's account is not sufficient to pay monthly the full amount of the Base Rent and Rent Adjustments reserved in this Lease, together with the costs of repairs, alterations, additions, redecorating and Landlord's expenses, Tenant shall pay to Landlord the amount of each monthly deficiency upon demand.

(f) Any and all property which may be removed from the premises by Landlord pursuant to the authority of the Lease or of law, to which Tenant is or may be entitled, may be handled, removed or stored by Landlord at the risk, cost and expense of Tenant, and Landlord shall in no event be responsible for the value, preservation or safekeeping thereof. Tenant shall pay to Landlord, upon demand, any and all expense incurred in such removal and all storage charges against such property so long as the same shall be in Landlord's possession or under Landlord's control. Any such property of Tenant not retaken from storage by Tenant at the end of the term, however terminated, shall be conclusively presumed to have been conveyed by Tenant to Landlord under this Lease as a bill of sale without any further payment or credit by Landlord to Tenant.

* provided however, if Tenant defaults in any provision of this Lease other than the payment of Base Rent or Rent Adjustments, which shall be governed as stated, or other than a default which involves a hazardous condition, which shall be cured forthwith, and if Tenant, within the 45-day period referred to above, gives Landlord evidence which is satisfactory, in the sole discretion of Landlord, that Tenant is diligently pursuing a course which will remedy the default which is subject of the notice, such default shall be deemed remedied, but provided further, that in the event, after 90 days elapse from the date Landlord determines that the evidence provided by Tenant is satisfactory, if such be the case, such default be not cured, Landlord shall thereupon again have the right to serve notice of default as provided in this Section 18(b), and under such circumstances Tenant shall not have the right to evidence diligent remedying of the default to avoid its consequences.

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(g) Tenant hereby grants to Landlord a first lien upon the interest of Tenant under this Lease to secure the payment of moneys due under this Lease, which lien may be enforced in equity and Landlord shall be entitled as a matter of right to have a receiver appointed to take possession of the demised premises and relet the same under order of court.

(h) Landlord Tenant shall pay upon demand all the other's reasonable costs, charges and expenses, including the reasonable fees of counsel, agents and others retained or incurred in enforcing each other's obligations hereunder or incurred by Landlord or Tenant in any litigation, negotiation or transaction in which Landlord or Tenant causes the other without the other's fault, to become involved or concerned if the enforcing party prevails.

19. DEFAULT UNDER OTHER LEASE. If the term of any lease, other than this Lease, made by Tenant for any demised premises in the Building shall be terminated or terminable after the making of this Lease because of any default by Tenant under such other lease, such fact shall empower Landlord, at Landlord's sole option, to terminate this Lease by notice to Tenant.

20. SURRENDER OF POSSESSION. Upon the expiration or other termination of the term of this Lease, or Tenant's right to possession hereunder, Tenant shall quit and surrender to Landlord the premises, broom clean, in good order and condition, ordinary wear excepted, and Tenant shall remove all of its property. If Tenant does not remove its property of every kind and description from the demised premises prior to the end of the term, however ended, Tenant shall be conclusively presumed to have conveyed the same to Landlord under this Lease as a bill of sale without further payment or credit by Landlord to Tenant and Landlord may remove the same and Tenant shall pay the cost of such removal to Landlord upon demand. Tenant's obligation to observe or perform this covenant shall survive the expiration or other termination of the term of this Lease.

21. NOTICES. Notices shall be in writing.

(a) Notices shall be effectively served by Landlord upon Tenant in the following manner: (i) By forwarding through Certified or Registered Mail, postage prepaid, to Tenant

at the premises,

      Attention:       the President
      with a copy to:  Chairman of the Board
                       Chicago Mercantile Exchange

and with a copy to: Goldberg, Kohn, Bell, Black and Rosenbloom Attorneys at Law Mid-Continental Plaza 55 E. Monroe St., Suite 3950 Chicago, Illinois 60603

in which case the time of mailing shall be the time of notice;

(b) Notices shall be effectively served by Tenant upon Landlord when addressed to Landlord and served either;

(i) Upon an officer of Landlord; or

(ii) Certified or Registered Mail, postage prepaid, to Landlord in case of JMB/MS Management Co., Suite 1200, 111 East Wacker Drive, Chicago, Illinois 60601, Attention: Legal Department or if notified of another address by Landlord at such latter address.

(c) Notice shall be effectively served by Tenant upon any mortgagee, trustee or ground lessor by forwarding such notice by certified or registered mail, postage prepaid to such mortgagee, trustee or ground lessor at its address as set forth in its request for notices pursuant to Section 15, or as Tenant is subsequently advised by such mortgagee, trustee or ground lessor in writing.

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24. MISCELLANEOUS.

(a) No receipt of money by Landlord from Tenant after the termination of this Lease or after the service of any notice or after the commencement of any suit, or after final judgment for possession of the demised premises shall reinstate, continue or extend the term of this Lease or affect any such notice, demand or suit.

(b) No waiver of any default of Tenant or Landlord hereunder shall be implied from any omission by Landlord or Tenant to take any action on account of such default if such default persists or be repeated, and no express waiver shall affect any default other than the default specified in the express waiver and that only for the time and to the extent therein state.

(c) The words "Landlord" and "Tenant" wherever used in this Lease shall be construed to mean plural where necessary, and the necessary grammatical changes required to make the provisions hereof apply either to corporations or individuals, men or women, shall in all cases be assumed as though in each case fully expressed.

(d) Each provision hereof shall extend to and shall, as the case may require, bind and inure to benefit of Landlord and Tenant and their respective heirs, legal representatives, successors and assigns in the event this Lease has been assigned with the express written consent of Landlord or has been permitted herein.

(e) Submission of this instrument for examination does not constitute a reservation of or option for the premises. The instrument does not become effective as a lease or otherwise until execution and delivery by both Landlord and Tenant.

(f) All amounts (unless otherwise provided herein, and other than the Base Rent, Rent Adjustment Deposits and Rent Adjustments, which shall be due as hereinbefore provided) owed by Tenant to Landlord hereunder shall be deemed additional Base Rent and be paid within ten (10) days from the date Landlord renders statements of account therefor. All such amounts (including Base Rent, Rent Adjustment Deposit and Rent Adjustments) shall bear interest from twenty (20) days after the date due until the date paid at the rate of 2% above the prime rate of interest in effect at the First National Bank of Chicago on the date of payment, or at the maximum legal rate of interest, whichever is lower.

(g) All riders attached to this Lease and initiated by Landlord and Tenant are hereby made a part of this Lease as though inserted in this Lease.

(h) The headings of sections are for convenience only and do not limit or construe the contents of the sections.

(i) If Tenant shall occupy the premises prior to the beginning of the term of this Lease with Landlord's consent, all the provisions of this Lease shall be in full force and effect as soon as Tenant occupies the premises. In the event of such prior occupancy, Base Rent, Rent Adjustments and other charges shall be appropriately prorated.

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(j) Subject to Section 15 and in furtherance thereof, should any mortgage, leasehold or otherwise, require a modification or modifications of this Lease which modification or modifications will not bring about any increased cost or expense to Tenant or in any other way materially change the rights and obligations of Tenant hereunder, then and in such event, Tenant agrees that this Lease or the Non-Disturbance and Attornment Agreement (Exhibit "C") may be so modified.

(k) Landlord and Tenant represent that neither has dealt with any broker other than Metropolitan Structures, Inc. and the Levy Organization as brokers in connection with this Lease, and that insofar as either knows no other broker negotiated this Lease or is entitled to any commission in connection therewith. Landlord and Tenant agree to indemnify and hold each other and Landlord's beneficiaries, Owner and Owner's partners and their respective agents and employees harmless from all claims of any other broker or brokers in connection with this Lease.

(l) Landlord and Tenant agree that from time to time upon not less than thirty (30) days prior request by Landlord or Tenant, Landlord or Tenant will deliver to the other a statement in writing certifying (i) that this Lease is unmodified in full force and effect (or if there have been modifications that the same is in full force and effect as modified and identifying the modifications), (ii) the dates to which the Base Rent, Rent Adjustment, Rent Adjustment Deposits and other charges have been paid, (iii) that so far as the person making the certificate knows, the other is not in default under any provision of this lease, if such be the case, (iv)

(m) Landlord's or Owner's title is and always shall be paramount to the title of Tenant, and nothing herein contained shall empower Tenant to do any act which can, shall or may encumber such title unless otherwise specified in this Lease.

(n) The laws of the State of Illinois shall govern the validity, performance, construction and enforcement of this Lease.

(o) If any term, covenant or condition of this Lease or the application thereof to any person or circumstance shall, to any extent, be invalid or unenforceable, the remainder of this Lease, or the application of such term, covenant or condition to persons or circumstances other than those as to which it is held invalid or enforceable, shall not be affected thereby and each term, covenant or condition of this Lease shall be valid and be enforced to the fullest extent permitted by law.

(p) The term "Owner", as used in this Lease, means the beneficiary or beneficiaries of Landlord and if any such beneficiary shall be a partnership then any liability or obligation of said partnership under this Lease shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claim arising out of this Lease. A deficit capital account of any such partner shall not be deemed an asset or property of said partnership.

(q) If Tenant is a corporation, the persons executing this Lease on behalf of such corporation hereby represent and warrant that they have been duly authorized to execute this Lease for and on behalf of such corporation pursuant to a duly adopted resolution of its board of directors or by virtue of its bylaws.

(r) Landlord and Tenant agree that should Landlord, in the exercise of its sole discretion, determine that a fire emergency exit (crash door) is required in the interest of public safety, Landlord may, at its sole expense, install such fire emergency exit (crash door) in any demising wall of the demised premises.

(s) If Landlord is a bank as trustee under a trust, this Lease is executed by the undersigned trustee, not personally but solely as trustee and it is expressly understood and agreed by the parties hereto, anything contained herein to the contrary notwithstanding that each and all of the covenants, undertakings, representations and agreements herein made are made and intended, not as personal covenants, undertakings, representations and agreements of the trustee, individually, or for the purpose of binding it personally, but this Lease is executed and delivered by the trustee, solely in the exercise of the powers conferred upon it as such trustee under said trust agreement and no personal liability or personal responsibility is assumed by, nor shall at any time be asserted or enforced against said bank, the beneficiary of said trust or its Agent on account hereof, or on account of any covenant, undertaking, representation, warranty or agreement herein contained, either expressed or implied, all such personal liability, if any, being hereby expressly waived and released by the parties hereto or holder hereof, and by all persons claiming by or through or under said parties or holder hereof. Such trustee, hereby confirms that its beneficiary has the authority to manage the Building and has designated JMB/MS Management Co. as Agent for the Beneficiary in connection with the management of the Building.

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(t) Landlord neither represents nor warrants that the demised premises may be occupied or used for the purposes stated in this Lease.

(u) Landlord and Tenant agree, that to the extent permitted by law, each shall and hereby does waive trial by jury in any action, proceeding or counterclaim brought by either against the other on any matter whatsoever arising out of or in any way connected with this Lease, the relationship of Landlord and Tenant. Tenant's use or occupancy of the premises and/or any emergency or statutory remedy.

25. MEMBER SPACE.

A. 1. Landlord agrees to reserve ("Reservation") approximately 400,000 square feet including the demised premises ("First Reservation Space') on the lowest office floors of the Building for lease to Tenant and to firms or individuals who are members in good standing ("Members") of Tenant. The Reservation shall terminate at midnight, April 30, 1982, unless 300,000 square-feet (including the demised premises) is leased by Tenant and/or Members on or before April 30, 1982, under which circumstances the Reservation shall be deemed automatically extended until midnight, October 31, 1982.

2. If Tenant and Members lease all of the First Reservation Space, Landlord shall reserve and the Members may lease, during the Reservation, an additional 200,000 square feet ("Second Reservation Space") which is located immediately above the First Reservation Space.

3. All Members leasing during the period commencing May 1, 1982 and ending October 31, 1982, and all Members leasing Second Reservation Space shall be deemed to have exercised the Work Option under Section 29.

B. 1. Tenant shall advise Landlord of its designated corporate officer(s) who is authorized to act on its behalf ("Officer(s)") and Officer has the right (subject to Sections 25.B.2.(a) and (b), 26 and 30) to approve all leases between Landlord and Members who lease space under this Lease. Landlord may reject a lease with a Member if, in Landlord's reasonable judgment, the proposed Member is financially unqualified. Tenant's approval shall:

a. take the form of the following inscription on the cover page of each Member lease (Exhibit "F" "Member Lease Form"):

The Chicago Mercantile Exchange hereby approves This lease for Landlord's execution.

CHICAGO MERCANTILE EXCHANGE

By ____________________________ "Officer"
Its

Date __________________________

b. subject to Sections 25.B.2.a. and b., not create any liability for Tenant under the lease approved by virtue of the approval.

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2. As to all First and Second Reservation Space leased by Members and all Member Five, Ten and Fifteen Year Space, Replacement Premises, and Offering Space, for which Tenant has given Landlord notice under section 25.D.1.c. or an Interest Notice under section 30, Tenant (Officer) is responsible for:

a. making arrangements with Members for the leasing of space by Members in the areas of the Building and Phase II Tower (if designated by Landlord) described in this Lease ("Member Space") throughout the term of this Lease and during occupancy subsequent thereto pursuant to Section 30. In connection with the assignment to Members of Member Five, Ten and Fifteen Year Space or Replacement Premises, in either the Building or the Phase II Tower (if designated by Landlord) as the case may be, such space and any space previously located in the Member Space or the demised premises shall be assigned to Members or occupied by Tenant so that resulting occupancy by Tenant and Members of the demised premises and Member Space (other than Offering Space) will be contiguous. Tenant will be liable to Landlord for any loss or damage (including loss of Base Rent and/or Rent Adjustments) arising out of Tenant's failure to assign or occupy space in the foregoing manner, but no liability on the part of Tenant shall arise hereunder as a result of a Member default unless such Member was a Sublessor of Tenant or by reason of the expiration of a lease with a Member at a time when no lease with a Member for Member 5, 10, or 15 Year Space, or lease or amendment with Tenant for 5, 10 or 15 Year Space, or a lease for Replacement Premises or a lease for Offering Space will be commencing concurrently therewith.

b. leasing Members' Space throughout the term of this Lease, with continuous rentals so that no rental timing gaps occur between the ending of one lease and the commencement of another. Therefore, rentals for Member Five, Ten and Fifteen Year Space (described in Section 25.D.) and Replacement Premises shall commence immediately upon their becoming available (in accordance with Section 25.D.R.) and be the obligation of the Member selected to take such space. If the Member does not satisfy this obligation the loss or damage (including loss of Base Rent and/or Rent Adjustments) for the timing gap is the obligation of Tenant but no liability on the part of Tenant shall arise hereunder as a result of a Member default unless such Member was a Sublessor of Tenant or by reason of the expiration of a lease with a Member at a time when no lease with a Member for Member 5, 10, or 15 Year Space, or lease or amendment with Tenant for 5, 10 or 15 Year Space, or a lease for Replacement Premises or a lease for Offering Space will be commencing concurrently therewith, and

c. the relative priorities and the resolution of any conflicts of Sections 25, 26 and 30, and

d. which Members are able to lease which space, and

e. whether a Member may expand to contiguous or noncontiguous space, and

f. whether a Member must or can relocate to Replacement Premises and the location of the Replacement Premises, and

g. which Members may lease Member Five, Ten or Fifteen Year Space or Replacement Premises and the amounts thereof.

h. which Members are able to lease First or Second Reservation Space.

3. The assignment and designation of space for Member expansion, and/or Replacement Premises shall accompany the notices given under Section 25.D.1.c.

4. If Officer does not make any decision or selection when required under this Lease, Landlord may make such decision or selection on behalf of Officer.

5. The form of leases with Members until the Reservation expires shall take the Members' Lease Form. Thereafter all leases with Members shall be on Landlord's then current form excepting only:

a. leases with Members for Member Five, Ten and Fifteen Year Space and Replacement Space; and

b. leasing pursuant to Section 30.

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C. The annual Base Rent rate per square foot, Rent Adjustments and the lease terms to Members for the First and Second Reservation Spare are as follows:

1. First Reservation Space:

a. annual Base Rent rate per square foot is $19.75 or, $20.25 if the Member has or is deemed to have exercised the Work Option under Section 29.

b. The Rent Adjustments are as stated in this Lease.

2. Second Reservation Space:

a. annual Base Rent rate per square foot is $25.00 and the Member is deemed to have exercised the Work Option under Section 29.

b. The Tax and Expense Rent Adjustments are as stated in this Lease.

c. The CPI portion of the Rent Adjustment is forty percent (40%) instead of thirty percent (30%) so that Section 2(a) is changed as follows:

(xxi) line 2 - 30% changes to 40%;
(xxi) line 7 - 30% changes to 40%;
(xxii)1(a) line 5 - 30% changes to 40%;
(xxii)1(a) line 9 - 30% changes to 40%
(xxii)2(a) line 6 - 30% changes to 40%;
(xxii)2(a) line 12 - 30% changes to 40%.

d. the CPI portion of the Rent Adjustment commences on the first
(1st) day of the thirteenth (13th) month of the Lease term so that Section 2(b) is changes as follows:

Line 2 - 37th is changed to 13th; Line 5 - 37th is changed to 13th; Line 7 - 37th is changed to 13th.

f. The example on page 43 is deemed modified accordingly.

3. The length of the lease term to Members shall be either five (5) or ten (10) years (at the option of Tenant) depending on whether the Members are located in Tenant's Five, Ten or Fifteen Year Space (defined in Section 26). Subsequent to the termination of the Reservation, excepting only the leasing of Member Five, Ten or Fifteen Year Space or Replacement Premises, all leasing to Members under this Lease shall be pursuant to Section 30.

D. Members Expansion.

1. Members may lease expansion space under the following terms and conditions:

a. the Member is not then in default by virtue of an existing money or other material default;

b. the Member has leased space from the First Reservation Space;

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c. Landlord receives notice from Tenant (Officer) on or before the:

(i) fourth (4th) Anniversary for Member Five Year Space (defined below);

(ii) ninth (9th) Anniversary for Member Ten Year Space (defined below);

(iii) fourteenth (14th) Anniversary for Member Fifteen Year Space (defined below);

d. such notices are accompanied by the assignment and designation required under Section 25.B.

2. a. Landlord shall deliver space as follows:

(i) as a result of the fourth Anniversary notice, up to twenty percent (20%) of the Members' total demised premises leased from First Reservation Space during the Reservation ("Member Five Year Space"). Leases written by Landlord in such space to Members or others are "Third Party Five Year Leases".

(ii) as a result of the ninth Anniversary notice, up to twenty percent (20%) of the Members' total demised premises leased from First Reservation Space during the reservation ("Member Ten Year Space"). Leases written by Landlord in such space to Members or others are "Thirty Party Ten Year Leases".

(iii) as a result of the fourteenth Anniversary notice, up to twenty percent (20%) of the Members' total demised premises leased from First Reservation Space during the reservation ("Member Fifteen Year Space"). Leases written by Landlord in such space to Members or others are "Thirty Party Fifteen Year Leases".

(iv) in addition to the Member Five, Ten and Fifteen Year Space, Landlord shall deliver space required to relocate Members who leased First Reservation Space and are displaced as a result of Tenant exercising its expansion options pursuant to Section 26 ("Replacement Premises"). Leases written by Landlord in such space are called "Replacement Leases".

b. if the square footage delivery requirements stated require Landlord to split an existing suite, any remainder must, in Landlord's sole reasonable judgment, be marketable.

3. a. the Member Five, Ten and Fifteen Year Space and Replacement Premises may be located either;

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(i) in the Members' Space, or

(ii) in the succeeding floors of the Building immediately above the Members' Space or, at the discretion of Landlord in the lower part of the Phase II Tower.

b. Landlord shall use reasonable efforts to lease the Member Five, Ten and Fifteen Year Space and the Replacement Premises for five and ten year terms and a reasonable mix thereof.

c. Third Party Five, Ten and Fifteen Year Lease terms (in any combination of renewals or reletting) may not exceed five (5), ten (10 or fifteen (15) years respectively.

4. a. The Members' terms for Member Five, Ten and Fifteen Year Space and Replacement Premises shall be five (5) years and Base Rent and Rent Adjustments shall commence on the later of:

(i) the vacation by the previous tenant;

(ii) the termination of Third Party Five, Ten and Fifteen Year Lease or a Replacement Lease;

(iii) the completion of the Building Standard work if the space has never been leased and the Member to occupy has either exercised or has been deemed to have exercised the Work Option pursuant to Section 29.

b. If a Member's lease during the Reservation was for a ten (10) year term and if such Member exercises an option for Member Five Year Space, the term for such Member's Member Five Year Space only, may at Member's option be for a term of five (5) years and extend beyond the term of the Member's lease for its demised premises.

5. The Members annual Base Rent rate per square foot for Member Five, Ten and Fifteen Year Space and Replacement Premises is as follows:

a. Subject to Section 25.D.5.c., if the Member's lease during the Reservation is for a five (5) year term, the annual Base Rent rate per square foot for such member Five, Ten and Fifteen Year Space and Replacement Premises required, if any, shall equal Prevailing Market.

b. If the Member's lease during the Reservation was for a ten
(10) year term;

(i) the annual Base Rent rate per square foot for such Member's Member Five Year Space shall equal the Base Rent Rate Per Square Foot plus the Rent Adjustment Rate Per Square Foot the Member is paying for its demised premises at the time the term for the Member Five Year Space commences.

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(ii) Subject to Section 25.D.5.c., the annual Base rent rate per square foot for such Member's Member Ten and Fifteen Year Space and Replacement Premises required, if any, shall equal Prevailing Market.

c. Excepting only Section 25.D.5.b.(1), under any and all circumstances, the Members' annual Base Rent rate per square foot for Member Five, Ten or Fifteen Year Space or Replacement Premises shall, subsequent to the tenth (10th) Anniversary of this Lease, equal Prevailing Market.

6. Subject to Section 25.D.5.c., if any Third Party Five, Ten or Fifteen Year Lease terminates prior to its stated termination date ("Third Party Prior Date"), and if the Third Party Prior Date;

a. is the result of a tenant default, and

b. if the Third Party Prior Date occurs subsequent to two (2) years after the Commencement Date for Member Five Year Space, seven (7) years for Member Ten Year Space or twelve (12) years for Member Fifteen Year Space

the Third Party Prior Date shall be deemed the termination date of such lease for purposes of Members expansion. Landlord shall provide Officer notice ("Third Party Expiration Notice") of the lease such space on behalf of a Member on or before fifteen (15) days after such Notice. If a Member does so exercise, it shall be deemed an exercise for Member Five Year Space if the exercise occurs prior to the 5th Anniversary. If the exercise occurs after the 5th Anniversary but before the tenth
(10th) Anniversary, the exercise shall be deemed for Member Ten Year Space. If the exercise is subsequent to the tenth (10th) Anniversary, the exercise shall be deemed for Member Fifteen Year Space. If however, a Member does not exercise such option, Landlord may lease such space to a tenant for a term not to exceed five (5) years and the expiration date of such lease shall be deemed to be the expiration of a Third Party Five, Ten or Fifteen Year Lease depending on whether such expiration occurs subsequent to the 5th, 10th or 15th Anniversary. Subsequent options are then 5 and/or 10 years thereafter instead of at the times stated in Section 25.D.1.

7. The Member Five, Ten and Fifteen Year Space or Replacement Premises shall be accepted by members in its "as-built" condition and configuration as of the date the term for such space commences, unless such space has never been occupied, under which circumstances Landlord, if a Member has or is deemed to have exercised the Work Option for its initial demised premises, shall construct it to Building Standard as described on Attachment "A" to the Work Letter attached to

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this Lease. If a Member has not or has not been deemed to have exercised the Work Option and if such Space has never been occupied, a credit as set forth in Section 28 shall be granted for the amount of Member Five, Ten or Fifteen Year Space or Replacement Premises taken.

8. If a tenant of the Member Five, Ten of Fifteen Year Space or Replacement Premises holds over, Landlord shall use reasonable efforts to evict such holdover tenant.

9. Landlord will endeavor to lease the Member Five, Ten and Fifteen Year Space and the Replacement Premises to entire floor tenants but it is understood that marketing conditions will probably preclude such.

E. It is understood that a Member may lease space in the Building or the Phase II Tower outside the terms of this Lease. Under such circumstances Landlord and such member may deal directly with each other and Tenant shall be neither involved nor responsible.

26. EXPANSION OPTIONS.

Tenant, provided it is not then in default by virtue of an existing money or other material default under this Lease, may lease additional space under the following terms and conditions:

A. If Landlord receives notice from tenant on or before the fourth (4th) Anniversary, Tenant (subject to Section 26.F) may require Landlord to deliver space up to twenty percent (20%) of the Tenant's demised premises leased prior to the expiration of the Reservation ("Five Year Space"). Leases written by Landlord in such space to Members or others are called "Five Year Leases".

B. If Landlord receives notice from Tenant on or before the ninth (9th) Anniversary, Tenant (subject to Section 26.F) may require Landlord to deliver space up to twenty percent (20%) of the Tenant's demised premises leased prior to the expiration of the Reservation ("Ten Year Space"). Leases written by Landlord in such space to Members or others are called "Ten Year Leases".

C. If Landlord receives notice from tenant on or before the fourteenth (14th) Anniversary, Tenant (subject to Section 26.F.) may require Landlord to deliver space up to twenty percent (20%) of the Tenant's demised premises leased prior to the expiration of the Reservation ("Fifteen Year Space"). Leases written by Landlord in such space to Members or others are called "Fifteen Year Leases".

D. The term for Five, Ten and Fifteen Year space leased by Tenant shall commence on the later of the vacation by the previous tenant or the termination of Five, Ten and Fifteen Year Leases and thereupon shall be considered demised premises, subject to all terms and conditions of this Lease. Five, Ten and Fifteen Year Lease terms (in any combination of renewals or reletting) may not exceed five
(5), ten (10) or fifteen (15) years respectively.

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E. The Five, Ten and Fifteen Year Space may be located either;

1. on the portion of the highest floor of the demised premises not entirely within the demised premises and sequentially on whole floors immediately above the demised premises,

or

2. in the Phase II Tower

at the discretion of Landlord. If the Phase II Tower be selected, Landlord shall make reasonable efforts to designate the lower floors (sequentially).

F. If the square footage delivery requirements stated require Landlord to split an existing suite, any remainder must, in Landlord's sole reasonable judgment, be marketable.

G. The annual Base Rent rate per square foot for the Five, Ten and/or Fifteen Year Space leased to Tenant shall equal:

1. the Base Rent Rate Per Square Foot of the demised premises at the time the term for the Five, Ten and/or Fifteen Year Space commences; plus

2. the Rent Adjustment Rate Per Square Foot of the demised premises at the time the term for the Five, Ten and/or Fifteen Year space commences.

H. If Tenant properly exercises any option contained in this Section 26, this Lease shall be revised by Landlord to reflect changes in the size of the demised premises, Base Rent, monthly installments of Base Rent and Tenant's Proportion, all of which shall be increased for each square foot by which the demised premises are increased. A copy of such revisions shall be sent to Tenant within a reasonable time after Tenant's exercise.

I. If any Five, Ten or Fifteen Year Lease terminates prior to its stated termination date ("Prior Date"), and if the Prior Date;

1. is the result of a tenant default, and

2. if the Prior Date occurs subsequent to two (2) years after the Commencement Date for Five Year Space, seven (7) years for Ten Year Space or twelve (12) years for Fifteen Year Space,

25

the Prior Date shall be deemed the termination date of such lease for purposes of this Section 26. Landlord shall provide Tenant notice ("Expiration Notice") of the Prior Date and Tenant may exercise an option to lease such space on or before fifteen (15) days after such Notice. If Tenant does so exercise, it shall be deemed an exercise for Five Year space if the exercise occurs prior to the Fifth Anniversary. If the exercise occurs after the Fifth Anniversary, but before the Tenth Anniversary, the exercise shall be deemed for Ten Year Space. If the exercise is subsequent to the Tenth Anniversary the exercise shall be deemed for Fifteen Year Space. If under such circumstances, Tenant does not exercise its option, Landlord may lease such space to a tenant for a term not to exceed five (5) years and the expiration date of such lease shall be deemed to be the expiration of a Five, Ten or Fifteen Year Lease depending on whether such expiration occurs subsequent to the Fifth, Tenth or Fifteenth Anniversary. Subsequent options are then 5 and/or 10 years thereafter instead of at the times stated in Section 26.B and 26.C.

J. The Five, Ten and Fifteen Year Space shall be accepted by Tenant in its "as-built" condition and configuration as of the date the term for such space commences, unless such space has never been occupied, under which circumstances Landlord, if Tenant has exercised the Work Option contained in Section 29 for the initial demised premises, shall construct it to Building Standard as described on Attachment "A" to the Work Letter attached to this Lease. If Tenant has not exercised the Work Option, and if such space has never been occupied, a credit as set forth in Section 28 shall be granted for the amount of expansion space taken.

K. If a tenant of the Five, Ten or Fifteen Year Space holds over, Landlord shall use reasonable efforts to evict such holdover tenant.

27. RENEWAL OPTION.

A. Tenant may extend the Termination Date of this Lease ("Renewal Option") for a period of ten (10) years ("Extension") upon the terms and conditions stated below if:

1. Landlord receives notice on or before the 19th Anniversary; and

2. Tenant is not then in default by virtue of an existing money or other material default under this Lease.

B. The annual Base Rent per square foot for the demised premises during the Extension shall equal Prevailing Market.

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C. If Tenant properly exercises this Renewal Option, this Lease shall be revised by Landlord to reflect changes in Base Rent, monthly installments of Base Rent, Termination Date and other appropriate terms. A copy of such revisions shall be sent to Tenant within a reasonable time after such exercise.

D. Occupancy of the demised premises by Tenant subsequent to the Extension shall be pursuant to Section 30 of this Lease and may continue indefinitely so long as Tenant exercises its rights under Section 30 and leases continuously. Subsequent to the expiration of the Lease term or Extension if Tenant leases the demised premises pursuant to Section 30, such leasing shall be deemed (for purposes of
Section 30 only) to have occurred during the Extension.

28. TENANT'S AND MEMBER'S CREDIT.

If Tenant or a Member does not or is not deemed to have exercised the Work Option (defined in Section 29):

A. Landlord hereby grants Tenant and Members the following amounts to be applied toward the cost of material and labor supplied in their premises;

1. To Tenant: $10.00 multiplied by the Rentable Area of the demised premises.

2. to Members: $10.00 multiplied by the Rentable Area of their demised premises.

B. Section 29 shall be deemed null and void.

C. Tenant and Member shall nevertheless contract with Metropolitan Structures, Inc. in accordance with the Work Letter for all material and labor to be supplied in their demised premises except that Tenant need not employ Metropolitan Structures for 1) material or labor or specialized or technical matters, e.g. computer installation or the communication system in its support area and 2) the area within Tenant's support area (not to exceed 50,000 square feet) covered by the contract entitled "Chicago Mercantile Exchange Trading Floor Project Interior Architects Agreement" by and between Tenant and Space Management Program, Inc. The amount of credit granted for the area under this credit shall be $10.00 per square foot if the Base Rent is $19.75 per square foot or $13.00 per square foot if the Base Rent is $20.25 per square foot. Section 8 of the Lease shall nevertheless be complied with. The Work Letter shall be deemed applicable except as follows:

1. Attachment "A" shall be deemed deleted;

2. All Plans (defined in the Work Letter), material and labor supplied shall be at Tenant's and/or Members sole cost and expense but shall be deemed Work and/or Tenant Extra Work as such are defined in the Work Letter;

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3. Section IIA(5) and IIB shall be deemed deleted and replaced

with:

"IIA(5)     Tenant agrees to pay Agent in the manner hereinafter
            set forth in this paragraph the following sums for
            the Work and/or Tenant Extra Work:

            (a)     up to and including $13.00 (which includes
                    7.5% thereof as General Conditions) per
                    square foot of Rentable Area of the demised
                    premises, all subcontract costs, plus 4%
                    (builders fee), and

            (b)     on that portion in excess of $13.00 per
                    square foot of Rentable Area of the demised
                    premises, all subcontract costs (which shall
                    include a 5% non-refundable contingency to
                    assure a fixed price and 7.5% of the total
                    thereof for General Conditions) plus 21% of
                    the total thereof for overhead and profit.
                    If Tenant or Member does not desire a fixed
                    price, the 5% non-refundable contingency
                    shall be eliminated.

IIB         Tenant shall pay Agent all such charges (net of
            credits) promptly upon being billed therefor at any
            time and from time to time. Such sums shall be
            deemed additional Base Rent for purposes of Section
            18 only of the Lease.

29. BUILDING STANDARD WORK OPTION.

A. Tenant and Members, by notice to Landlord on or before April 30, 1982, may elect to have Landlord construct, at Landlord's sole cost and expense, the Building Standard Work (shown on Attachment "A" to the Work Letter attached to this Lease) in their demised premises ("Work Option").

B. If Tenant and/or the Members exercise or are deemed to have exercised the Work Option:

1. the Work Letter and Attachment "A" to the Work Letter shall become operative, and

2. the annual Base Rent rate per square foot for the demised premises and/or the Members premises for Members who have leased First Reservation Space, shall be increased from $19.75 to $20.25, and

3. Section 28 shall be deemed null and void, and

4. this Lease and the Members Leases shall be revised by Landlord to reflect changes in Base Rent, monthly installments of Base Rent and the credits granted in Section 31 (stated in Column B) if any A copy of such revisions shall be sent to Tenant and Member promptly after Tenant's and/or Members' exercise.

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30. RIGHT OF FIRST OFFERING.

A. During the term of this Lease (or Extension or subsequently in accordance with Section 27.D.) so long as Tenant is a tenant in the Building, Tenant or Members (at the sole election and designation of and by Tenant (Officer)) shall have the right to lease the Offering Space (defined below) under the terms stated in Exhibit "B" ("Advice"). If Tenant desires or desires to indicate a Member's desire to lease Offering Space, Tenant shall give Landlord notice
("Interest Notice") naming the Member, if applicable, and within forty-five (45)
days after receipt of such, Landlord shall give Tenant an Advice stating the terms it proposes to offer the Offering Space, or any part thereof, to other tenants. Landlord's obligation to give the Advice is contingent upon:

1. Tenant (or the Member) not being then in default by virtue of an existing money or other material default under this Lease (or the Member's lease if a member);

2. Landlord's receipt of the Interest Notice for any portion of the Offering Space (except B.7. below) during the period commencing two (2) years prior to the expiration date of each Offering Lease (defined below) and ending 460 days thereafter. For the space on the ten (10) lowest office floors of the Phase II Tower, Tenant need not give an Interest Notice, but Landlord shall give an Advice when it commences marketing such space; and

3. the Offering Lease not being extended or renewed pursuant to an option contained as an original clause in the Offering Lease; and

4. the Offering Space not being subject to an exercised expansion or renewal option contained in a lease to another tenant.

5. the Offering Space (excepting 30.B.7.) having been leased to another tenant at least once.

B. The Offering Space is the space located:

1. in the demised premises, and

2. in Tenant's Five, Ten or Fifteen Year Space, and

3. in Members Space leased from First Reservation Space, and

4. in Member Five, Ten or Fifteen Year Space and Replacement Premises, and

5. on the five full floors immediately above Member Five, Ten or Fifteen Year Space or Replacement Premises, and

6. sufficient space on the floors immediately above such five full floors equal to the difference between 400,000 square feet and the total space leased by Tenant and Members (from First Reservation Space only) during the Reservation, and

7. on the ten (10) lowest office floors of the Phase II Tower.

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C. This right of first offering ("ROFO") shall be exercised by Tenant (only) as follows:

1. if the Offering Space is vacant or becomes vacant, or if the Offering Lease has ninety-two (92) days or less remaining in its term, or if a Second Advice (defined below) is given for an Offering Space, Tenant (and Member) must execute and deliver the Advice (or Second Advice) to Landlord within fifteen (15) days after its date;

-or-

2. if the Offering Space is occupied under a non-defaulted lease with more than ninety-two (92) days remaining in its term, Tenant (and Member) must execute and deliver the Advice to Landlord within forty-five (45) days after its date,

-and-

3. within twenty (20) days after the fifteen (15) days (Section 30 C 1) or the forty-five (45) days (Section 30 C 2), Tenant's or Member's (as the case may be) execution of a lease in the form of this Lease if Tenant or in the Member Lease Form if a Member (or appropriate amendments in either case), except that to the extent there are any economic differences between the Advice and this Lease or the Members Lease Form, the Advice shall prevail and control and either this Lease or the Members Lease Form shall be amended to conform to the Advice.

D. If the ROFO is exercised the term for the Offering Space shall commence upon the later of the vacation of the Offering Space by the existing tenant or the expiration of the existing lease for such space ("Offering Lease") and end in accordance with the term stated in the Advice.

E. If Tenant fails to exercise the ROFO, Landlord shall be free to lease such space upon terms which are the same as or different from those set forth in the Advice or this Section 30, except that if Landlord changes any of items 1 through 10 of the Advice, Tenant" Right of First Offering for such space shall again become operative on the date of a new Advice ("Second Advice"". If however the total economic effect of any change results in no overall economic impact or an impact which is more favorable to Landlord (e.g. greater rent), a Second Advice is not required, e.g. if the base rent is increased by $14,275.00 over a five (5) year term and if the credits are increased by $10,000.00 there would be no economic impact for purposes of this Section 30 (this example uses a fifteen percent (15%) per annum constant).

F. This Section 30 shall not be excluded from applicability to space as a result of Tenant's prior failure to exercise its rights hereunder or under Section 26 on a particular space or as a result of Tenant or a Member leasing such space pursuant to this Section 30.

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G. If a lease in Offering Space terminates prior to its stated termination date, Landlord shall give Tenant notice and Tenant thereupon has fifteen (15) days to give an Interest Notice.

H. Tenant's giving an Interest Notice or Landlord's giving of an Advice shall not be deemed to confer on Tenant or Members any rights or obligations other than those set out in this Section 30.

I. If Landlord is not required to give an Advice, it shall give a Non-Advice which states the reason(s) an Advice is not necessary. The Non-Advice shall be given within the same time requirements as an Advice.

31. RENT CREDIT.

A. As a concession to Tenant and Members, if, as to each, the Plans Due Date (Work Letter) is met and if, as to each Member and Tenant, their demised premises is within the First Reservation Space, Landlord hereby grants to Tenant and such Members a credit in the sums stated below (Column A or if Tenant or a Member exercises or is deemed to have exercised the Work Option contained in
Section 29, Column B) to be applied against the monthly installments of Base Rent due as follows:

For Tenant:
                                     Column A          Column B
Month                                 Amount            Amount
-----                                 ------            ------
For 2nd month of Lease term         $164,583.34       $168,750.00
For 3rd month of Lease term          164,583.34        168,750.00
For 4th month of Lease term          164,583.34        168,750.00
                                   ------------      ------------

                      Total        $493,750.02        $506,250.00


For Members:

                                  Column A          Column B
Month                              Amount            Amount
-----                              ------            ------
For 2nd month of lease term   $19.75 x Rentable  $20.25 x Rentable
                              Area of premises   Area of premises
                              -----------------  -----------------
                                     12                 12

For 3rd month of lease term   $19.75 x Rentable  $20.25 x Rentable
                              Area of premises   Area of premises
                              -----------------  -----------------
                                     12                 12

For 4th month of lease term   $19.75 x Rentable  $20.25 x Rentable
                              Area of premises   Area of premises
                              -----------------  -----------------
                                     12                 12

A default as to the Plans Due Date by Tenant or any Member shall not affect the right of any non-defaulting party (Tenant or Member) to receive the foregoing credit.

B. Rent Adjustments, if any, due for any, due for any months to which a credit is applied shall be paid as provided in Sections 1 and 2 of this Lease or the Members' Lease form.

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32. MINIMUM SPACE.

It is agreed that Tenant and Members will, on or before April 30, 1982, execute leases for no less than 250,000 square feet in the Building. To the extent that such amount of space is not so leased, at Landlord's option, either;

A. the demised premises under this Lease shall, by appropriate amendments to be executed by Tenant on or before May 30, 1982, be increased (at locations contiguous to the demised premises designated by Landlord) by the difference between 250,000 square feet and the amount leased by Tenant and Members, or

B. Landlord may lease such space to others subject to this Lease.

33. RESERVED PARKING.

A. Upon completion of a Building automobile parking facility ("Facility"), Landlord shall cause the operator of the Facility ("Operator") to make the "derived number" (defined below) of monthly parking privileges ("Privileges") available to Tenant and Members through Officer. Tenant or Members (as the case may be) shall:

1. seek from Officer the availability of Privileges;

2. pay the monthly charges for the Privileges at the rate charged by the Operator from time to time;

3. contract with Operator for the Privileges within sixty (60) days after the later of (a) its occupancy of demised premises, or (b) completion of the Facility (Landlord shall use reasonable efforts to give Tenant notice on or before thirty (30) days prior to the date the Facility is to be completed);

4. use the Privileges so contracted on a continuous basis.

If Tenant or Members fail to pay, contract or continuously use any of such Privileges, Landlord need no longer cause such Privileges to be made available.

B. Tenant's and Member's (who have leased First Reservation Space) derived number of parking privileges shall be determined from the following formula:

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Rentable Area of demised premises plus space Leased by Members from First Reservation Space And expansion space leased from time to time X 500 X 120% = N Rentable Area of Building and the Phase II tower (if and when built)

N = number of parking privileges for Tenant and Members. (Note: The number of privileges so derived may not exceed eighty percent (80%) of the number of privileges contained in the Facility.)

C. Landlord warrants that the Facility when completed in the Building and the Phase II Tower will contain approximately 500 privileges for the Building and the Phase II Tower. Upon completion of the Phase II Tower, N shall be reduced by recalculation using the above formula.

D. The number of Tenant and Members (who have leased First Reservation Space) privileges shall be adjusted for fluctuations in occupancy on each successive Five Year Anniversary of this Lease. Under no circumstances, however, may the total number of privileges Tenant and Members have exceed eighty percent (80%) of the Facility.

E. Members who lease Second Reservation space shall obtain Privileges on a prorata basis (100% not 120%).

34. DELIVERY OF PREMISES.

A. After the execution of this Lease, Landlord agrees to use reasonable efforts to:

1. make the Building, the demised premises and the Members' demised premises Ready for Occupancy on or before forty-four (44) months after Landlord's obtainment of a Foundation Permit for the Building (Completion Date);

2. give Tenant no less than thirty (30) days advance notice of the Completion Date;

3. obtain a Foundation Permit by September 30, 1981;

4. advise Tenant of the date the Foundation Permit is obtained.

B. If Landlord is delayed by an Act of Tenant or an Act of a Member or if the Completion Date is delayed by an Act of Tenant or an Act of a Member, the demised premises* or the Member's demised premises for the delaying party (Tenant or a Member) only shall be deemed Ready for Occupancy on the date they would have been ready had such a delay not occurred and Landlord shall be entitled to give notice of the Commencement Date in accordance with the demising section (first unnumbered complete section) found on page 1 of this Lease.

* for the delaying party (Tenant or a Member) only

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C. If, for any reason other than an Act of Tenant or an Act of a Member, the Building, the demised premises and the Member's demised premises are not Ready for Occupancy by January 1, 1987, or if Landlord has not obtained a Foundation Permit by July 31, 1982, or if Landlord's Beneficiary gives a notice of the Abandonment Date pursuant to Article VI, Section 6.1 of the Agreement for Sale of Trading Floor Area and Construction of Trading Floor by and between C.M.E. Center, an Illinois Limited Partnership and C.M.E. Real Estate Co.,* Tenant and Members on notice to Landlord (on or before ninety (90) days after the event) may terminate their Leases. In the event of such termination, neither Landlord, Tenant nor Members shall have any liability to the other other than Landlord shall refund monies paid to it by Tenant or Members.

35. FABER'S RESTAURANT.

Landlord agrees that without Tenant's prior consent, Landlord may not lease space in the Building for a Faber's Restaurant (owned by or named Faber's).

36. RETAIL SPACE.

A. Landlord grants Tenant an option ("Retail Option") to lease up to an additional 4,025 square feet located in the retail area of the Building ("Retail Space"), if:

1. Landlord receives notice of Tenant's exercise on or before June 30, 1982; and

2. the location of the Retail Space is in a location mutually agreed upon by Landlord and Tenant.

B. If Tenant exercises the Retail Option:

1. the Retail Space shall be added to the demised premises and thereupon be subject to all the terms and conditions of this Lease;

2. the Retail Space shall be used and occupied for the purpose stated on page 1 of this Lease;

3. this Lease shall be revised to reflect changes in the size of the demised premises, Base Rent (increased at the rate (annual) of $30.50 per square foot of Retail Space), monthly installments of Base Rent, Tenant's Proportion, all of which shall be increased for each square foot by which the demised premises are increased. The Work Option (Section 29) and the credits (Section 31, Column A or B) are not applicable to the Retail Space. A copy of such revisions shall be sent to Tenant promptly after Tenant's exercise; and

* (The "Trading Floor Agreement") and such notice of the Abandonment Date has not been rescinded within the time period set forth therein by the Lender described in the Trading Floor Agreement, or if such Trading Floor Agreement is terminated by C.M.E. Real Estate Co. pursuant to the provisions of Section 4.1 thereof, then

34

4. Landlord shall construct the Retail Space to Building Standard as described on Attachment "B" to the Work Letter attached to this Lease.

5. Notwithstanding anything hereinbefore contained in this Lease, there shall be no abatement or reduction of that portion of the Base Rent payable for Retail Space ("Retail Rent Portion") except to the extent the Retail Space shall be decreased pursuant to Section 9, rendered untenantable pursuant to Sections 3(C) or 10, or taken pursuant to
Section 12, in which event any abatement or reduction of the Retail Rent Portion shall be in proportion to the amount of the decreased, untenantable or taken area of the Retail Space.

37. TENANT ENTRANCE.

Tenant is granted the right at its sole expense to maintain a guard service at an evening and weekend Building entrance/exit of its choosing.

38. PRIVATE RESTAURANT CLUB SPACE.

A. Landlord grants Tenant or a group of Members (approved by Officer and Landlord ("Group")) an option ("Club Option") to lease approximately 12,500 square feet located on Upper Lobby Level (Exhibit A-1 ("Club Space")) for a private restaurant ("Club"), if:

1. Landlord receives notice of exercise on or before June 30, 1982; and

2. such notice of exercise is accompanied by cash from Tenant or Group in the sum of $232,000.00 which shall be deposited in an interest bearing construction escrow account to be used for construction and furnishing the Club, with the interest enuring to the benefit of Tenant or Group, and

3. on or before March 31, 1983 Tenant's or Group's deposit of an additional $463,000.00 in such escrow account, and

4. the location, configuration, size and nature of construction of the Club Space and chattel improvements have been mutually agreed upon by Landlord and Tenant.

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B. If Tenant or Group properly exercise this Club Option and the conditions in
Section 38(A) occur;

1. A lease on the Members Lease Form for a twenty (20) year term (with no Work Letter and no Attachment "A") shall be prepared to reflect Base Rent (at the rate (annual) of $25.00 per square foot of Club Space under lease). The Work Option (Section 29) and the credits stated in
Section 31 (Column A or B) are not applicable to the Club Space and the default provisions (Section 18) shall be modified so that if a default occurs, Landlord's only remedy will be to obtain possession of the Club Space. Landlord shall have no right to proceed against Tenant or Group for delinquent rentals.

2. Tenant or Group shall: a) accept the Club Space "as-is", there being no construction required therein by Landlord, and b) construct and equip the Club in accordance with plans and specifications which have been approved by Landlord and Tenant.

3. Notwithstanding anything hereinbefore contained in this Lease, there shall be no abatement or reduction of that portion of the Base Rent payable for Club Space ("Club Rent Portion") except to the extent the Club Space shall be decreased pursuant to Section 9, rendered untenantable pursuant to Sections 3(C) or 10, or taken pursuant to
Section 12, in which event any abatement or reduction of the Club Rent Portion shall be in proportion to the amount of the decreased, untenantable or taken area of the Club Space.

4. Landlord hereby grants Tenant or the Group a credit in an amount not to exceed $463,000.00 to be applied, at their direction, toward the cost of materials or labor supplied for the construction of the Club.

5. (a) In addition to the credit in subsection 4 hereof, Landlord agrees to advance ("Advance") the Tenant or Group up to $695,000.00 to be applied to the cost of materials or labor supplied for the construction of the Club, provided however, that the Advance may be in increments or $10,000.00 only. For example, if $19,500.00 is requested, $10,000.00 shall be advanced, if $71,200.00 is requested, $70,000.00 shall be advanced.

(b) Tenant's request for the Advance shall take the form (sworn statements) outlined in Section 8 of this

36

Lease. Landlord shall make direct payment to contractors for all Advances requested and after the last Advance, the total Advance shall be set.

(c) Subsequent to the setting of the total Advance, Landlord shall obtain repayment by increasing the total Base Rent and each monthly installment thereof by $131.67 for each $10,000.00 Advanced. The increase in the total Base Rent shall be determined by multiplying the increase in the monthly installments of Base Rent (as determined above) by the number of months in the lease term. The lease for the club shall be revised by Landlord to reflect such changes. A copy of such revisions shall be sent to the Tenant or Group promptly after the Advance is set.

C. Under any and all circumstances all decorations, improvements, chattels, equipment, personal property, fixtures and trade fixtures of any kind or description put into the Club must be fully paid for as such items are installed. In the event of default under the lease for the Club Space, and in the event such default results in the exercise of Landlord's right to terminate the lease for the Club Space and/or terminate the tenant's right to occupy the Club Space, all decorations, improvements, chattels, equipment, personal property, fixtures and trade fixtures of any kind or description shall automatically become the property of Landlord with no bill of sale being required.

D. In the event the total costs (construction and chattel improvements of the Club are less than the deposits under Section 38 (A) (2) and (3), the Credit under Section 38(B) (4) and the Advance under Section 38(B) (5), any excess shall be paid to Landlord and the tenant under the Club lease as follows:

1. 28.57% to such tenant
2. 28.57% to Landlord
3. 42.86% to Landlord to reduce the Advance.

E. In the event the Club Option is not exercised, the demised premises shall be increased by 12,500 square feet on the Upper Lobby Level and decreased by 9,415.5 square feet on the 6th floor and 3,084.5 on the 5th floor. To the extent the Club Option is exercised for more or less than 12,500 square fee the increase or decrease shall first cause an adjustment to the area under this Lease on the Upper Lobby floor (17,915.5 square feet) and then, floor 6 and/or floor 5 shall be adjusted to maintain a total Rentable Area of the demised premises of 100,000 square feet.

39. SECURITY AREA.

A. Notwithstanding Section 6(I) of this Lease, Tenant may, if Tenant complies with Section (B) below, provide its own locks to an area within the demised premises ("Secured Area") and shall not be required to furnish Landlord with a key, except upon termination of this Lease Tenant shall surrender such keys to Landlord. If Landlord determines, in its sole discretion, that an emergency or other situation in the Building, or the demised premises exists, including, by way of

37

explanation but not limitation, any suspected fire or flood, Landlord may forcibly enter the Secured Area. In such event, Landlord shall have no liability whatsoever to tenant, and Tenant shall pay all reasonable expenses incurred by Landlord in repairing or reconstructing any entrance, corridor, or door or other portions of the demised premises or the Secured Area damaged as a result of Landlord's forcible entry, provided however, Landlord shall use reasonable efforts to contact a representative of Tenant to secure access to the Secured Area prior to a forcible entry but under no circumstances shall Landlord be obligated to contact Tenant. Landlord shall have no obligation to provide either janitor service or cleaning in the Secured Area.

B. On or before thirty (30) days prior to Tenant's occupancy of the demised premises, Tenant shall give notice to Landlord showing the Secured Area and the name and manner of contact of a representative of Tenant to be contacted to avoid a forcible entry as stated in Section (A) above.

40. BUILDING.

Landlord agrees to maintain the Building and the corridors in the public areas in a manner consistent with a first class downtown Chicago office building.

41. QUIET ENJOYMENT.

Landlord covenants and agrees that Tenant, upon paying the rental and performing Tenant's other covenants and agreements under this Lease, shall and may peacefully have and enjoy the demised premises for the term of this Lease free and clear from hindrance by Landlord or any person claiming through Landlord, subject always to the provisions of Section 15 and Exhibit "C" of the Lease.

42. ANNUAL NOTICE.

A. Within sixty (60) days after December 31st of each calendar year during the Lease term, Landlord shall advise Tenant of all leases made during such calendar year on the lowest thirty-one (31) office floors of the Building and the ten
(10) lowest office floors of the Phase II Tower. Such notice shall include the name of tenant, the term of the lease, the rental, options to renew or expand, and a demising plan showing the options to renew or expand, and a demising plan showing the space and square footage. The aforementioned advisement is for information only and shall not be deemed to confer any rights to Tenant or Members on such floors except as provided in this Lease.

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B. Upon written request of Tenant, Landlord shall advise as to whether a tenant has exercised an option contained in its lease or whether a given space has been leased.

43. DESIGN CHANGES.

The Rentable Area of the Building (Section 2(a) (vii)), Rental Area of the demised premises (Section 2(a) (viii)) and the Exhibits A-1 through A-6 will change as a result of design changes and refinement by Landlord's architect, Fujikawa Conterato Lohan and Associates, Inc. When such has been completed, and the Rentable Area of the premises and Building certified by such architect, this Lease shall be amended to reflect the certified areas as follows;

A. Annual Base Rent (Section 1) rate per square foot of $19.75 (or $20.25),

B. Tenant's Proportion (Section 2(a) (xi)),

C. Taxes and Expense Rent Adjustment (Section 2(d)) at the rate of $5.50 per square foot of Rentable Area of the Building,

D. Rent Credit (Section 31(A))

1. Column A at $19.75 multiplied by the Rentable Area of the demised premises and

2. Column B at $20.25 multiplied by the Rentable Area of the demised premises,

E. Replacement Exhibits A-1 through A-6, as required,

F. Rentable Area of the Building (Section 2(a) (vii)),

G. Rentable Area of the demised premises (Section 2(a) (viii)).

44. SINGLE DIGIT ADDRESS.

Supplementing the provisions of Section 16(a), but not in derogation thereof, Landlord shall use reasonable efforts to obtain a single digit address for the Building such as "4" South Wacker Drive.

45. SHOPS.

Landlord shall use reasonable efforts to lease retail

39

space in the Building for a bank, newsstand, tobacco shop, public restaurant and bar overlooking the Chicago river, drug store and men's and women's soft goods stores.

46. LEASE CONFLICT.

In the event a conflict develops between this Lease and the Members Lease Forum, this Lease shall prevail.

47. MEMORANDUM OF LEASE.

Landlord and Tenant agree to execute the Memorandum of Lease (Exhibit "E") which may be recorded by Tenant.

48. INFORMATION KIOSK.

It is understood that Tenant may be desirous of installing an information kiosk ("Kiosk") of approximately forty (40) square fee ton the plaza level of the Building. Landlord hereby agrees to use all reasonable efforts to aid Tenant in achieving such desire (if achieved, the Kiosk space shall be added to the demised premises) provided however, Tenant agrees to accept the provided space in its condition occurring on the data it is tendered to Tenant, it being understood that the Kiosk will not or may not be enclosed with demising walls. The plans, specifications, method of installation and location of the Kiosk are subject to approval by Landlord and any governmental agency having jurisdiction, and all costs and expenses, including costs of construction materials and labor, design and investigations shall be the sole responsibility of Tenant. There shall be no Base Rent or Rent Adjustment charges for the Kiosk.

49. INSTALLATION OF ELEVATOR SHAFT AND ELEVATOR.

It is understood that Tenant may be desirous of installing an elevator shaft and elevator ("Elevator") for Tenant's private freight elevator usage between the P-1 Level and Mechanical Level #2 of the Building. Landlord hereby agrees to provide the Elevator at Landlord's sole cost and expense. The plans, specifications, method of installation and location of the Elevator shall be established by Landlord's architect. There shall be no rental charged for the Elevator.

50. DOCK RECEIVING OFFICE.

It is understood that Tenant may be desirous of sharing a dock receiving office ("Office") on the P-1 Level of the Building with Landlord. Landlord hereby agrees to use all reasonable efforts to aid Tenant in achieving such desire.

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The nature and location of the Office is subject to approval by Landlord. The costs and expenses incurred for the Office shall be shared by Landlord and Tenant. The Rental for the Office is subject to the mutual agreement of Landlord and Tenant.

51. STORAGE SPACE.

It is understood that Tenant may be desirous of acquiring up to 150 square feet of storage space ("Storage Space") on the P-1 level near the Office. Landlord hereby agrees to use all reasonable efforts to aid Tenant in achieving such desire (if achieved the Storage Space shall be added to the demised premises except that section 3(a) shall not apply). The plans, specifications, and location of the Storage Space are subject to the approval of Landlord and all costs and expenses incurred are the sole responsibility of Tenant. Rental charges for the Storage Space are subject to the mutual agreement of Landlord and Tenant.

52. MECHANICAL SPACE.

It is understood that Tenant may be desirous of acquiring space (not to exceed 4,000 square fee) for their chiller and vertical condenser water riser ("Mechanical Space") in the core of the Building. Landlord hereby agrees to use all reasonable efforts to aid Tenant in achieving such desire (if achieved the Mechanical Space shall be added to the demised premises except that section 3(a) shall not apply). The plans, specifications, method of installation and location of the Mechanical Space are subject to the approval of Landlord and any governmental agency having jurisdiction, and all costs and expenses, including costs of construction materials and labor, investigations, incurred as a result of such installation, are the sole responsibility of Tenant. There shall be no Base Rent or Rent Adjustment charges for the Mechanical Space.

53. AS-BUILTS.

Tenant may review as-built plans in Landlord's possession for any space to which Tenant or Members may have rights.

54. ADDITIONAL AND CONSTANT PORTION LIMITATION.

A. Tenant need not pay the Additional Portion and/or Constant Portion (or portion thereof) for any Year during the Lease term to the extent the Additional Portion Rate Per Square Foot plus the Constant Portion Rate Per Square Foot for such Year when added to the sum of:

Base Rent Rate Per Square Foot Tax and Expense portion of the Rent Adjustment Rate Per Square Foot Base Portion Rate Per Square Foot

41

causes the resulting total for such Year during the Lease term to exceed the Prevailing Market Rate Per Square Foot.

B. Under no circumstances shall this Section 54 be construed to limit the obligation of Tenant to pay the total of:

Base Rent
Tax and Expense Rent Adjustment Base Portion

C. For purposes of this Section 54, "Year" means a calendar year (January 1 through December 31).

Section 10 continued;

10A. If the demised premises or Building are damaged by fire or other casualty during a time when a mortgagee, a trustee under a trust deed, or a purchaser at a foreclosure sale is the owner of the Real Property after a default under the mortgage or trust deed and shall be the Landlord hereunder (hereafter in this Section 10A referred to as the "Post Default Owner"), and if
(a) the damage caused by such fire or other casualty exceeds an amount equal to fifteen percent (15%) of the then current insurable value of the Building and
(b) the Trading Floor has not been damaged or, if it has, Tenant gives Post Default Owner notice that (i) if the damage to the Trading Floor exceeds thirty percent (30%) of the insurable value thereof, owner of the Trading Floor desires to reconstruct the Trading Floor or (ii) if the damage to the Trading Floor is thirty percent (30%) or less of the insurable value thereof, owner of the Trading Floor will reconstruct the Trading Floor, or if Tenant fails to give such notice within sixty (60) days after such fire or casualty, then provisions of this Section 10A shall apply.

In the event the conditions stated above in this Section 10A occur, Post Default Owner shall, within sixty (60) days after the last to occur of (a) a determination of the then current insurable value of the Building, or
(b) the receipt of any required notice from Tenant that owner of the Trading Floor desires to or will reconstruct the Trading Floor, elect either;

(i) to serve notice on Tenant that Post Default Owner will proceed with all due diligence to repair, restore or rehabilitate the Building or the demised premises at Post Default Owner's expense, in which event the provisions of Section 10 set forth in the last paragraph thereof shall apply, or

(ii) to serve notice on Tenant that Post Default Owner does not intend to make the election described in clause (i) above and chooses to retain for its own use and property the insurance proceeds payable by reason of such fire or other casualty.

If Post Default Owner shall make the election in clause (ii) above, Tenant shall have an option (exercisable by written notice to Post Default Owner within Sixty
(60) days after receipt by Tenant of the notice described in clause (ii)) to purchase the Real Property from Post Default Owner at a price equal to the fair market value of the Real Property in its unrepaired condition. Such purchase shall be for cash less the amount of any existing mortgage encumbrances to which title will be subject at closing. If the amount of existing mortgage encumbrances exceeds the fair market value of the Real Property in its unrepaired condition, then Post Default Owner shall pay to Tenant or the encumbrancer the amount of such excess at closing. If Post Default Owner and Tenant are unable to agree on the fair market value of the Real Property within a period of sixty (60) days after the date of receipt of Post Default Owner's notice by Tenant, then the fair market value of the Real Property shall be determined by an appraiser selected jointly by Post Default Owner and Tenant. The determination of such appraiser shall be conclusive upon the parties. The expenses of such appraisal shall, except as hereinafter provided, be shared equally by Post Default Owner and Tenant. If an appraisal of the Real Property is made, Tenant shall have the right to withdraw its offer to purchase the Real Property within sixty (60) days after the determination of fair market value by the appraiser. If Tenant withdraws its offer, Tenant shall pay all of the expenses of the appraiser. The closing shall be not later than one hundred twenty (120) days after agreement as to determination of the fair market value.

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(continuation of 2.a.xiii)

The parties hereto acknowledge that the title holder of the Phase II Tower may hereafter be an entity or person other than the initial Landlord and all references in this Lease to the Phase II Tower are set forth for the purpose of identifying the rights of Tenant with respect to the Phase II Tower and binding the owners thereof from time to time to the obligations with respect to the Phase II Tower set forth in this Lease. It is further acknowledged by the parties hereto that the obligations of any Post Default Owner (defined in section 10.A.) of the Real Property with respect to the Phase II Tower are subject to and contingent upon the direct or indirect ownership by such Post Default Owner of the Phase II Tower and such Post Default Owner shall have no obligations and shall not be deemed to have made any warranties with respect to the Phase II Tower except at such times as such Post Default Owner is the direct or indirect owner of the Phase II Tower. If and so long as Post Default Owner has to direct or indirect ownership of the Phase II Tower, as to such Post Default Owner only, this Lease will be construed as deleting all references to the Phase II Tower.

42(a)


4/14/81

The following example is provided to show the method by which the CPI Portion of the Rent Adjustment will be calculated for the years listed based upon the assumptions stated.

Assumptions -     Base Rent - $20.25/s.f.
               -  CPI Increase at a Constant 10%/Year
               -  Commencement Date of Lease 1/1/84

   (1)        (2)           (3)         (4)                (5)              (6)             (7)               (8)          (9)
                                                                                                           "Constant
                                                                         CPI Factor                        Portion"     "CPI Portion
                                                                         @ 10% or 6%                       (Addt'l        of Rent
                                                                         Cap Factor                        Portion       Adjustment"
                         CPI Factor  "Base             30% of Prior     whichever is    "Additional        For 1993       (Col 4
Calendar    30% of       @ 10% For   Portion"          Year CPI         Less Starting   Portion"           Remains        + Col 7
Year (D)    $20.25       19 Yrs.     (Col 2 x Col 3)   (30% x Col 9)    Over in 1994    (Col. 5 x Col 6)   Constant       + Col 8)
--------    ------       -------     ---------------   -------------    ------------    ----------------   --------     ------------
1984 (A)    $6.075/sf         -            0                 0                -               0                  0            0
1985           6.075          -            0                 0                -               0                  0            0
1986           6.075          -            0                 0                -               0                  0            0
1987 (B)       6.075       .331        $2.01/sf              0            .191016             0                  0      $   2.01/sf
1988           6.075       .464          2.82            $   .60/sf       .262477         $     .16/sf           0          2.98
1989           6.075       .611          3.71                 .90         .338226                .31             0          4.02
1990           6.075       .772          4.69                1.21         .418519                .51             0          5.20
1991           6.075       .949          5.77                1.56         .503630                .79             0          6.56
1992           6.075      1.144          6.95                1.97         .593818               1.18             0          8.13
1993 (C)       6.075      1.358          8.25                2.44         .689479               1.70             0          9.95
1994           6.075      1.594          9.68                2.99         .060000                .18        $   1.70       11.56
1995           6.075      1.853         11.26                3.47         .123600                .43            1.70       13.39
1996           6.075      2.138         12.99                4.02         .191016                .78            1.70       15.47
1997           6.075      2.452         14.90                4.65         .262477               1.23            1.70       17.83
1998           6.075      2.797         16.99                5.35         .338226               1.82            1.70       20.51
1999           6.075      3.177         19.30                6.16         .418519               2.60            1.70       23.60
2000           6.075      3.595         21.84                7.08         .503630               3.59            1.70       27.13
2001           6.075      4.054         24.63                8.14         .593848               4.87            1.70       31.20
2002           6.075      4.560         27.70                9.36         .689479               6.50            1.70       35.90
2003           6.075      5.116         31.08               10.77         .790848               8.58            1.70       41.36

NOTES:
(A) Calendar Year in which Commencement Date Occurs. (B) Calendar Year in which 37th Month of Lease Term Occurs.
(C) Calendar Year in which 120th Month of Lease Term Occurs.
(D) Calendar Years are the same as Calculation Years, so Proration Need Not Occur

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IN WITNESS WHEREOF, the parties hereto have executed this Lease the date first above written.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, ILLINOIS,

a national banking association of Chicago, Illinois, not ATTEST: individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268.

By _____________________________            By _________________________________
Its      ASSISTANT SECRETARY                Its          TRUST OFFICER




ATTEST:                                 TENANT
                            CHICAGO MERCANTILE EXCHANGE

an Illinois not-for-profit corporation

By _____________________________ By _________________________________ Its Vice President Its CHAIRMAN OF THE BOARD

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FIRST AMENDMENT TO LEASE

This First Amendment to Lease is made and entered into as of this 1st day of February, 1982, by and between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord") and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a certain Agreement of Lease dated May 11, 1981 (hereinafter called "Lease), pursuant to which Landlord leased to Tenant, and Tenant leased from Landlord 100,000 square feet of office space on the Lobby Level and 2nd-6th Floors of the building located at 30 South Wacker Drive, Chicago, Illinois (hereinafter called the "Building"); and

WHEREAS, Landlord and Tenant desire to enter into this First Amendment to Lease for the purpose of amending the Lease as hereinafter set forth;

NOW, THEREFORE, for a good and valuable consideration, the receipt and sufficiency whereof being hereby acknowledged, Landlord and Tenant hereby agree as follows:

1. Section 2 of the Lease and Section 2 of Exhibit "F" of the Lease (Member Lease) are amended-

a. by striking out "993,040" in line 1 of subsection 2(a)(vii) and inserting in lieu thereof "1,029,127"; and

b. by striking out "$5,461,720.00" in line 2 of subsection 2(d) and inserting in lieu thereof "$5,660,199.00"; and

c. by striking out "1977" both times it appears in subsection 2(h) and inserting in lieu thereof "1967".

2. Section 2 of the Lease is amended -

a. by striking out "10.070" in line 1 of subsection 2(a)(xi) and inserting in lieu thereof "9.717"; and

1

b. by adding at the end of subsection 2(a) thereof the following:

(xxxii) "Member(s)" means any of the following:

A. an individual who is a member in good standing of Tenant;

B. an entity (corporation or partnership) who:

1. has at least two (2) Chicago Mercantile Exchange seats assigned to it, or

2. has at least two (2) International Monetary Market seats assigned to it, or

3. has at least two (2) Associate Mercantile Market seats assigned to it, or

4. has at least two (2) Index/Options Market seats assigned to it, or

5. has been approved by Tenant as Class B Clearing Member.

(Note: The International Monetary Market, Associate Mercantile Market and the Index/Options Market are divisions of Tenant.)

2. Section 24 of the Lease and Section 24 of Exhibit "F" of the Lease (Member Lease) are amended by adding at the end of Section 24 thereof the following:

(v) The liability or obligations of Metropolitan Structures under this Lease, if any, shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claim arising out of this Lease. A deficit capital account of any such partner shall not be deemed an asset or property of said partnership.

(w) The liability or obligations of JMB/MS Management Co. under this Lease, if any, shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claim arising out of this Lease. A deficit capital account of any such partner shall not be deemed an asset or property of said partnership.

3. Section 25 of the Lease is amended -

a. by striking out subsection 25A.1 and inserting in lieu thereof the following:

25.A.1. Landlord agrees to reserve ("Reservation") approximately 400,000 square feet including the demised premises ("First Reservation Space") on the lowest office floors of the Building for lease to Tenant and Members. The Reservation shall terminate at midnight, April 30, 1982, unless 300,000 square feet (including the demised premises) is leased by Tenant and/or Members on or before April 30, 1982, under which circumstances the Reservation shall be deemed automatically extended until midnight, October 31, 1982.

2

b. by inserting the following before the period in line 12 of subsection 25B.2.a.:

(in order to achieve such contiguity, it is understood that Tenant, at its sole expense, may among other things, change the demised premises of a Member after a lease with such Member has been completely executed even though the change results in a change in the size, location and/or configuration of such demised premises)

4. The Work Letter attached to the Lease and the Work Letter attached to Exhibit "F" (Member Lease) are amended by adding at the end of
Section V thereof the following:

I. The liability or obligations of Metropolitan Structures under this Work Letter, if any, shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claim arising out of this Work Letter. A deficit capital account of any such partner shall not be deemed an asset of said partnership.

J. The liability or obligations of Metco Properties under the Lease or this Work Letter, if any, shall be limited to its partnership assets and no partner of said partnership shall be individually or personally liable for any claim arising out of the Lease or this Work Letter. A deficit capital account of any such partner shall not be deemed an asset of said partnership.

5. Attachment "A" of the Work Letter attached to the Lease and page 40 of Exhibit "F" (Attachment "A" to the Member Lease) are amended - a. by striking out "200" in item 9 and inserting in lieu thereof "175"; and b. by striking out "250" in item 10 and inserting in lieu thereof "218.75".

6. Section 2.a.xxx. of Exhibit "F" of the Lease (Member Lease) is amended by inserting the following after "1981" in line 1: ", as amended from time to time,".

3

7. Section 32 of Exhibit "F" of the Lease (Member Lease) is amended by the addition of the following:

Additionally, it is understood that the demised premises under this Lease may be changed by Landlord, at the request of the Chicago Mercantile Exchange (tenant under the Merc Lease), even though the change results in a change in the size, location and/or configuration of the demised premises. Tenant hereby agrees to execute promptly all amendatory documents to this Lease required to reflect any such change. Such documents may include changes in the following:

1. Size of the demised premises.
2. Base Rent.
3. Proportion.
4. Credits.
5. Location in the Building.

In any event any such change is made, any expenses resulting therefrom shall be the responsibility of the Chicago Mercantile Exchange or Tenant.

8. The letter agreement of August 26, 1981, a copy of which is attached hereto and marked as Exhibit "1", is hereby rendered null and void.

9. Section 44 of the Lease to the contrary notwithstanding, 30 South Wacker Drive, Chicago, Illinois, is the address preferred by Tenant for the south office tower of the Building and such address, subject to Section 16(c) of the Lease, is hereby established as the address for such tower.

10. The Demising Plans of the Lease are amended -

a. by striking out "17,915.5" on Exhibit A-1 (Upper Lobby Level) and inserting in lieu thereof "19,078";

b. by striking out "16,490" on Exhibit A-2 (2nd Floor Plan) and inserting in lieu thereof "17,884";

c. by striking out "17,310" on Exhibit A-3 (3rd Floor Plan) and inserting in lieu thereof "17,022";

d. by striking out "18,636" on Exhibit A-4 (4th Floor Plan) and inserting in lieu thereof "18,746";

e. by striking out "20,233" on Exhibit A-5 (5th Floor Plan) and inserting in lieu thereof "20,627"; and

f. by striking out "9,415.5" on Exhibit A-6 (6th Floor Plan) and inserting in lieu thereof "6,643".

4

11. Section 38 E. of the Lease is amended -

a. by striking out "9,415.5"in line 2 and inserting in lieu thereof "6,643";

b. by striking out "3,084.5" in line 3 and inserting in lieu thereof "5,857"; and

c. by striking out "17,915.5" in line 6 and inserting in lieu thereof "19,078".

12. Wherever the works "METROPOLITAN STRUCTURES INC." appear in the Lease or any exhibit or attachment thereto such shall be deemed amended to refer to "METROPOLITAN STRUCTURES, a General Partnership".

13. Except as hereinbefore modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this First Amendment to Lease as of the date first above written.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, ILLINOIS, a national banking association of Chicago, Illinois, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268.

ATTEST:                             By              /s/
                                      ----------------------------------
                                    Its          Vice President

By              /s/
  -------------------------------
Its     Assistant Secretary

TENANT

CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

ATTEST:                             By              /s/
                                      ----------------------------------
                                    Its          Vice President

By              /s/
  -------------------------------
Its  Secretary to Vice President

5

SECOND AMENDMENT TO LEASE

This Second Amendment to Lease is made and entered into as of this 26th day of April, 1982, by and between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord") and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a certain Agreement of Lease dated May 11, 1981 pursuant to which Landlord leased to Tenant, and Tenant leased from Landlord 100,000 square feet of office space on the Lobby Level and 2nd - 6th Floors of the Building located at 30 South Wacker Drive, Chicago, Illinois (hereinafter called the "Building"); and a First Amendment to Lease dated February 1, 1982 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Second Amendment to Lease for the purposes of amending the Lease is hereinafter set forth;

NOW THEREFORE, for a good and valuable consideration, the receipt and sufficiency whereof being hereby acknowledged, Landlord and Tenant hereby agree as follows:

I. Effective May 1, 1982:

A. Section 2(a) (vii) is amended by striking out "1,029,127" in line one (1) and inserting in lieu thereof "1,030,981";

B. Section 2(a)(viii) is amended by striking out "100,000" in line one (1) and inserting in lieu thereof "160,208". (Such change in the size of the demised premises results from a change on the Upper Lobby Level and the 6th floor (Sections D and E below) and by the addition of 47,297 square feet on the 7th and 8th floors of the Building ("First Additional Space") as shown on Exhibits "A-7a", "A-7b" and "A-8" attached hereto.);

C. Section 2(d) is amended by striking "$5,660,199.00" in line two (2) and inserting in lieu thereof "$5,670,396.00";

D. Exhibit A-1 (Upper Lobby Level) is deleted and replaced by "New Exhibit A-1" attached hereto;

E. Exhibit A-6 (6th Floor Plan) is deleted and replaced by "New Exhibit A-6" attached hereto;

1

F. the First Additional Space shall be considered demised premises subject to terms and conditions of the Lease;

G. Section 2(a) (xi) is amended by striking "10.070" and inserting in lieu thereof "15.54";

H. Tenant is deemed to have exercised the Work Option (Section 29) therefore Column "A" for Tenant is stricken from Section 31.A.;

I. until the day before the tenth (10th) Anniversary 40,208 square feet of the demised premises is deemed to be Second Reservation Space ("Second Space") so that the following applies to the Second Space;

1. annual Base Rent rate per square foot is $25.00 (reflected in Section III below):

2. the Tax and Expense Rent Adjustments are as stated in the Lease;

3. the CPI portion of the Rent Adjustment is forty percent (40%) instead of thirty percent (30%) so that Section 2(a) of the Lease is changed as follows:

(xxi) line 2 - 30% changes to 40%
(xxi) line 7 - 30% changes to 40%
(xxii)1(a) line 5 - 30% changes to 40%
(xxii)1(a) line 9 - 30% changes to 40%
(xxii)2(a) line 6 - 30% changes to 40%
(xxii)2(a) line 12 - 30% changes to 40%

4. the CPI portion of the Rent Adjustment commences on the first (1st) day of the thirteenth (13th) month of the Lease term so that Section 2(b) is changed as follows:

line 2 - 37th is changed to 13th;

line 5 - 37th is changed to 13th;

line 7 - 37th is changed to 13th.

5. the Work Option under Section 29 of the Lease is deemed exercised; and

6. the Second Space is not included to determine the amount of Five, Ten or Fifteen Year Space.

7. Landlord shall provide Tenant a calculation of the CPI portion of the Rent Adjustment for the Second Space separate from such calculation for the remainder of the demised premises.

II. Effective on the tenth (10th) Anniversary, as to the Second Space:

A. annual Base Rent rate per square foot is $20.25 (reflected in Section III below);

B. the Tax and Expense Rent Adjustments are as stated in the Lease; and

2

C. the CPI portion of the Rent Adjustment is thirty percent (30%) so that
Section 2(a) is changed as follows:

(xxi) line 2 - 40% changes to 30%
(xxi) line 7 - 40% changes to 30%
(xxii)1(a) line 5 - 40% changes to 30%
(xxii)1(a) line 9 - 40% changes to 30%
(xxii)2(a) line 6 - 40% changes to 30%
(xxii)2(a) line 12 - 40% changes to 30%

D. The Additional Portion (Section 2(a) (xxii)) and the Constant Portion (Section 2(a) (xxiii)) shall be calculated as though the Second Space was added to the demised premises on May 1, 1982 as First Reservation Space.

III. The total Base Rent of $39,500,001.60 payable as set forth in
Section 1 of the Lease is amended to be a total Base Rent of $66,794,120.40 as set forth in said Section 1 of the Lease except that it shall be payable as follows:

A. 120 equal monthly installments of $286,266.67 to be paid in advance on or before the first day of each month during the period beginning on the Commencement Date and ending on the day before the tenth (10th) Anniversary; and

B. 120 equal monthly installments of $270,351.00 to be paid in advance on or before the first day of each month during the period beginning on the tenth
(10th) Anniversary and ending on the Termination Date.

IV. Section 25 of the Lease is amended;:

A. by striking out "April 30, 1982" in lines 6 and 8 of Section 25.A.1. and inserting in lieu thereof "May 31, 1982"; and

B. by striking out "200,000" in line 3 of Section 25.A.2. and inserting in lieu thereof "159,792".

V. Section 26 of the Lease is amended:

A. by striking out "twenty percent (20%) of the Tenant's demised premises leased prior to the expiration of the Reservation" in Section 26.A. and inserting in lieu thereof "24,000 square feet";

B. by striking out "twenty percent (20%) of the Tenant's demised premises leased prior to the expiration of the Reservation" in Section 26.B. and inserting in lieu thereof "24,000 square feet"; and

C. by striking out "twenty percent (20%) of the Tenant's demised premises leased prior to the expiration of the Reservation" in Section 26.C. and inserting in lieu thereof "24,000 square feet"; and

D. Section E.1. is deleted and replaced with:

"1. on floors above the demised premises within space leased by Members (sites to be selected by Tenant),

or"

3

VI. Section 29.B.2. of the Lease is amended by adding ", excluding the Second Space," after the first "premises" in line 2.

VII. Section 31.A. of the Lease is amended:

A. by adding ", as to Tenant, Second Space is deemed excluded from this calculation" after the word "premises" in line 3;

B. by adding ", except Second Space," after the word "Tenant" in line 4; and

C. by striking and deleting the following:

"                                Column A       Column B
Month                             Amount         Amount
-----                             ------         ------
For 2nd month of Lease term    $164,583.34    $168,750.00
For 3rd month of Lease term    $164,583.34    $168,750.00
For 4th month of Lease term    $164,583.34    $168.750.00
                               -----------    -----------
          Total                $493,750.02    $506,250.00"

and inserting the following in lieu thereof:

"                                           Column B
Month                                        Amount
-----                                        ------
For 2nd month of Lease term                $202,500.00
For 3rd month of Lease term                $202,500.00
For 4th month of Lease term                $202,500.00
                                           -----------
          Total                            $607,500.00".

VIII. Section 33.B. of the Lease is amended by adding ", except Second Space," after the word "premises" in line one of the formula at the top of page 33.

IX. Section 38 of the Lease is amended:

A. by striking out "approximately 12,500" in line 3 of Section 38.A. and inserting in lieu thereof "13,643"; and

B. by striking "(Exhibit A-1" in line 4 of Section 38.A. and inserting in lieu thereof "(Exhibit A-1a" attached hereto; and

C. by striking out "$232,000.00" in line 2 of Section 38.A.2. and inserting in lieu thereof "$253,214.00"; and

D. by striking out "$463,000.00" in line 2 of Section 38.A.3. and inserting in lieu thereof "$505.337.00"; and

E. by striking out the first sentence in Section 38.B.1. in its entirety and replacing in lieu thereof the following:

"1. A lease on the Members Lease Form for a twenty (20) year term (with no Work Letter and no Attachment "A") shall be prepared to reflect total Base Rent of SIX MILLION EIGHT HUNDRED TWENTY-ONE THOUSAND FIVE HUNDRED AND 80/100 DOLLARS ($6,821,500.80) payable in two hundred forty (240) monthly installments of TWENTY EIGHT THOUSAND FOUR HUNDRED TWENTY-TWO AND 92/100 ($28,422.92)."

4

F. by striking out "$463,000.00" in line 2 of Section 38.B.4. and inserting in lieu thereof "$505,337.00"; and

G. by striking out $695,000.00" in line 3 of Section 38.B.5.(a) and inserting in lieu thereof "$758,551.00"; and

H. by striking out "or" in line 6 of Section 38.B.5.(a) and inserting in lieu thereof "of"; and

I. by striking and deleting Section 38.E. in its entirety.

X. Section 43 is amended:

A. by adding "or $25.00 for Second Space" after "$20.25" in line 2 of Section 43.A.; and

B. by adding "(excepting Second Space)" after "premises" in line 2 of Section 43.D.1.

C. by adding "(excepting Second Space)" after "premises" in line 2 of Section 43.D.2.

XI.

SECURITY DEPOSIT. Tenant agrees to deposit with Landlord, upon the execution of this Second Amendment the sum of $15,915.67 as security for the full and faithful performance by Tenant of each and every term, provision, covenant, and condition of this Lease. If Tenant defaults in respect to any of the terms, provisions, covenants and conditions of this Lease including, but not limited to, payment of the Base Rent, Rent Adjustment Deposits or Rent Adjustments, Landlord may use, apply, or retain the whole or any part of the security so deposited for the payment of any such Base Rent, Rent Adjustment Deposits or Rent Adjustments in default, or for any other sum which Landlord may expend or be required to expend by reason of Tenant's default including, without limitation, any damages or deficiency in the reletting of the demised premises, whether such damages or deficiency shall have accrued before or after any re-entry by Landlord. If any of the security shall be so used, applied or retained by Landlord, at any time or from time to time, Tenant shall promptly, in each such instance, on written demand therefor by Landlord, pay to Landlord such additional sum as may be necessary to restore the security to the original amount set forth in the first sentence of this paragraph. If Tenant shall fully and faithfully comply with all the terms, provisions, covenants, and conditions of this Lease, the security, shall be applied, at Tenant's written request, against the monthly installment due on the 11th Anniversary. If not so requested then the security or any balance thereof, shall be returned to Tenant after the following:

(a) the time fixed as the expiration of the term of this Lease;

(b) the removal of Tenant from the demised premises;

(c) the surrender of the demised premises by Tenant to Landlord in accordance with this Lease; and

(d) the time required for all Rent Adjustments owned pursuant to the Lease to have been computed by Landlord and paid by Tenant.

Except as otherwise required by law. Tenant shall not be entitled to any interest on the aforesaid security. In the absence of evidence satisfactory to Landlord of any assignment of the right to receive the security or the remaining balance thereof, Landlord may return the security to the original Tenant, regardless of one or more assignments of this Lease.

XII.

A. Exhibit A-2 is deleted and replaced by "New Exhibit A-2" attached hereto;

B. Exhibit A-3 is deleted and replaced by "New Exhibit A-3" attached hereto;

5

C. Exhibit A-4 is deleted and replaced by "New Exhibit A-4" attached hereto; and

D. Exhibit A-5 is deleted and replaced by "New Exhibit A-%" attached hereto;

XIII.Item 14 of Attachment "A" of the Work Letter attached to the Lease is amended by adding:

A. "4" between 3 and 5, and

B. "11" after 10.

XIV. The letter dated April 16, 1982 attached hereto (Exhibit "B") is hereby deemed null and void.

XV. Except as hereinbefore modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Second Amendment to Lease as of the date first above written.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under
the provisions of a certain Trust Agreement
dated March 20, 1980, and known as Trust
No. 48268.

ATTEST:                             By           /s/
                                      ----------------------------------
                                    Its          Vice President

By            /s/
  ------------------------------
Its    Assistant Secretary

TENANT

CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

ATTEST:                             By              /s/
                                      ----------------------------------
                                    Its          Vice President

By             /s/
  ------------------------------
Its    A.A.

6

THIRD AMENDMENT TO LEASE

This Third Amendment to Lease is made and entered into as of this 29th day of June, 1982, by and between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord") and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a certain Agreement of Lease dated May 11, 1981 pursuant to which Landlord leased to Tenant, and Tenant leased from Landlord 100,000 square feet of office space on the Lobby Level and 2nd-8th Floors of the Building located at 30 South Wacker Drive, Chicago, Illinois (hereinafter called the "Building"); a First Amendment to Lease dated February 1, 1982; and a Second Amendment to Lease dated April 26, 1982 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Third Amendment to Lease for the purposes of amending the Lease is hereinafter set forth;

NOW THEREFORE, for a good and valuable consideration, the receipt and sufficient whereof being hereby acknowledged, Landlord and Tenant hereby agree as follows:

I. TENANT'S CREDIT.

A. As a concession to Tenant, provided that Tenant is not in default under the Lease, Landlord hereby grants Tenant a credit of $48,062.40 (160,208 X $0.30) to be applied against the second and, if necessary, subsequent monthly installments of Base Rent due under the Lease.

B. The balance of Base Rent and/or Rent Adjustments due for the second month of the Lease term shall be paid as provided for in Section 1 and 2 of the Lease.

II. WORK LETTER.

A.The Work Letter attached to the Lease is amended:

1. by striking out "Agent, if Tenant has exercised the Work Option containing in Section 29 of the Lease," in line 1 of Section I.A. and inserting in lieu thereof "Tenant"; and

2. by striking out "R M M, Inc." in line 6 of Section I.A. and inserting in lieu thereof "Space/Management Programs Inc.".

III. LETTER AGREEMENT

The letter dated May 17, 1982 attached hereto (Exhibit "1") is hereby deemed null and void.

1

IV. Except as hereinbefore modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Third Amendment to Lease as of the date first above written.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:                           By              /s/
                                    ---------------------------------
                                  Its          Vice President


By             /s/
   ---------------------------
   Its   Assistant Secretary
                                  This instrument is executed by AMERICAN
                                  NATIONAL BANK AND TRUST COMPANY OF CHICAGO,
                                  not personally but solely as Trustee, as
                                  aforesaid. All the covenants and conditions to
                                  be performed hereunder by AMERICAN NATIONAL
                                  BANK AND TRUST COMPANY OF CHICAGO are
                                  undertaken by it solely as Trustee, as
                                  aforesaid and not individually, and no
                                  personal liability shall be asserted or be
                                  enforceable against AMERICAN NATIONAL BANK AND
                                  TRUST COMPANY OF CHICAGO by reason of any of
                                  the covenants, statements, representations or
                                  warranties contained in this instrument.

TENANT

CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

                                  By              /s/
                                    ---------------------------------
                                  Its     Senior Vice President

ATTEST:
By            /s/
   ---------------------------
   Its     Secretary


FOURTH AMENDMENT TO LEASE

This Fourth Amendment to Lease is made and entered into as of this 28th day of July, 1982, by and between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord") and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a certain Agreement of Lease dated May 11, 1981 pursuant to which Landlord leased to Tenant, and Tenant leased from Landlord 100,000 square feet of office space on the Lobby Level and 2nd-6th Floors of the Building located at 30 South Wacker Drive, Chicago, Illinois (hereinafter called the "Building"); and a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; and

WHEREAS, Landlord and Tenant desire to enter into this Fourth Amendment to Lease for the purposes of amending the Lease is hereinafter set forth;

NOW THEREFORE, for a good and valuable consideration, the receipt and sufficient whereof being hereby acknowledged, Landlord and Tenant hereby agree as follows:

I. TITLE PAGE.

The Title Page of the Lease is changed by deleting "100,000 Square Feet on the Upper Lobby Level and 2nd-6th Floors" and inserting in lieu thereof "160,784 Square Feet on the Upper Lobby Level and 2nd -8th Floors".

II. WITNESSETH.

The Witnesseth Section of the Lease is changed by deleting in line 3, "100,000 Square Feet on the Upper Lobby Level and 2nd-6th Floors" and inserting in lieu thereof "160,784 Square Feet on the Upper Lobby Level and 2nd-8th Floors".

III. BASE RENT.

The total Base Rent of $66,794,120.40 payable as set forth in Section 1 of the Lease is amended to be a total Base Rent of $67,027,400.40 as set forth in said Section 1 of the Lease except that it shall be payable as follows:

A. 120 equal month installments of $287,238.67 to be paid in advance on or before the first day of each month during the period beginning on the Commencement Date and ending on the day before the tenth (10th) Anniversary; and

B. 120 equal monthly installments of $27,323.00 to be paid in advance on or before the first day of each month during the period beginning on the tenth
(10th) Anniversary and ending on the Termination Date.


IV. RENTABLE AREA OF BUILDING.

Section 2(a) (vii) is amended by striking out "1.030,981" in line one
(1) and inserting in lieu thereof "1,031,323".

V. RENTABLE AREA OF DEMISED PREMISES.

Section 2(a) (viii) is amended by striking out "160,208" in line one (1) and inserting in lieu thereof "160,784".

VI. TENANT'S PROPORTION.

Section 2(a) (xi) is amended by striking "15.54" and inserting in lieu thereof "15.59".

VII. TAXES/EXPENSES.

Section 2(d) is amended by striking "$5,670,396.00" in line two (2) and inserting in lieu thereof "$5,672,276.50".

VIII.DEMISING PLANS.

A. "New Exhibit A-1" is deleted and replaced by "Current Exhibit A-1" attached hereto;

B. "New Exhibit A-3" is deleted and replaced by "Current Exhibit A-3" attached hereto;

C. "New Exhibit A-5" is deleted and replaced by "Current Exhibit A-5" attached hereto;

D. "Exhibit "A-7a" " and "Exhibit "A-7b"" are deleted and replaced by "New Exhibit A-7" attached hereto; and

E. "Exhibit "A-8"" is deleted and replaced by "New Exhibit A-8" attached hereto.

IX. RENT CREDIT.

A. Section 31.A. of the Lease is amended by striking out column "B" and inserting in lieu thereof:

" $ 203,472.00
203,472.00
203,472.00
$ 601,416.00 "

B. Section I.A. of the Third Amendment to Lease is amended by deleting "$48,062.40 (160,208 X $0.30)" and inserting in lieu thereof "$48,235.20 (160,784 X $0.30)".

2

X. TERMS OF LEASE.

IN WITNESS WHEREOF, the parties hereto have executed this Fourth Amendment to Lease as of the date first above written.

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:                           By /s/
                                    --------------------------------
                                  Its          Vice President

By /s/
  ------------------------------
Its     Assistant Secretary

TENANT

CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

ATTEST:                           By /s/
                                    --------------------------------
                                  Its     Senior Vice President

By /s/
  ------------------------------
Its     Assistant Secretary


FIFTH AMENDMENT TO LEASE

This Fifth Amendment to Lease is made and entered into as of this 7th day of October, 1982, by and between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord") and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a certain Agreement of Lease dated May 11, 1981 pursuant to which Landlord leased to Tenant, and Tenant leased from Landlord 100,000 square feet of office space on the Lobby Level and 2nd - 6th Floors of the Building located at 30 South Wacker Drive, Chicago, Illinois (hereinafter called the "Building"); and a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; a Fourth Amendment to Lease dated July 28, 1982; and

WHEREAS, Landlord and Tenant desire to enter into this Fifth Amendment to Lease for the purposes of amending the Lease is hereinafter set forth;

NOW THEREFORE, for a good and valuable consideration, the receipt and sufficiency whereof being hereby acknowledged, Landlord and Tenant hereby agree as follows:

I. ELEVATOR.

Section 49 of the Lease is amended:

1. by striking out "#2" in line 4 and inserting in lieu thereof "#1";

2. by the addition of the following:

"The Elevator shall serve (among other floors) the 9th and 10th Floors of the Building except that on notice to Landlord, Tenant may elect to delete service to the 9th and 10th Floors of the Building."

II. TERMS OF LEASE.

Except as hereinbefore modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

1

IN WITNESS WHEREOF, the parties hereto have executed this Fifth Amendment to Lease as of the date first above written.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

                                  By  /s/
                                    -----------------------------------
                                  ITS          Vice President
ATTEST:

By /s/
  -------------------------------
ITS      Assistant Secretary

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

TENANT

CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

                                  By /s/
                                    -----------------------------------
                                  ITS     Senior Vice President

ATTEST:

By /s/
  -------------------------------
ITS       Secretary

2

SIXTH AMENDMENT

THIS Sixth AMENDMENT is made as of this 5th day of July 1983, between

AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, a national banking association of Chicago, Illinois not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord"), and

CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation ("Tenant")

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a Lease dated May 11, 1981 pursuant to which Tenant leased 160,784 square feet on the Upper Lobby Level and the 2nd-8th floors of the building located at 30 South Wacker Drive, Chicago, Illinois ("Building"); and a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; a Fourth Amendment to Lease dated July 28, 1982; and a Fifth Amendment to Lease dated October 7, 1982 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Sixth Amendment for the purpose of amending the Lease;

NOW, THEREFORE, for a good and valuable consideration, the receipt and sufficiency being hereby acknowledged, Landlord and Tenant agree as follows:

I. MEMBER SPACE.

Sections 25.D.3.a. (I) and (ii) are deleted in their entirety and replaced with the following:

" (i) in the Members' Space, or

(ii) in the succeeding floors of the Building immediately above the Members' Space, or

(iii) at the discretion of Landlord, in the lower part of the Phase II Tower.

(iv) Notwithstanding subsections a.(I) and (ii) to the contrary, Landlord, at its discretion, may exclude the 22nd floor of the Building from the space described in subsections a. (i) and (ii) above. Such exclusion shall not, however, diminish the amount of Member, Five, Ten, and Fifteen Year Space and replacement Premises."


II. EXPANSION OPTIONS.

Section 26.E. is deleted in its entirety and replaced with the following:

" E. The Five, Ten and Fifteen Year Space may, at the discretion of Landlord, be located either;

1. on floors above the demised premises within space leased by Members (sites to be selected by Tenant), or

2. in the Phase II Tower.

3. If the Phase II Tower be selected, Landlord shall make reasonable efforts to designate the lower floors (sequentially).

4. Notwithstanding subsection E. (1) above, to the contrary, Landlord, and its discretion, may exclude the 22nd floor of the Building from the space described in subsection E.1 above. Such exclusion shall not, however, diminish the amount of Five, Ten and Fifteen Year Space."

III. TERMS OF LEASE.

Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Sixth Amendment as of the date first above written.

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:

By /s/                              By /s/
  ------------------------------      -------------------------------
Title    ASSISTANT SECRETARY           Title     VICE PRESIDENT
     ---------------------------            -------------------------


                                                           TENANT

                                  CHICAGO MERCANTILE EXCHANGE, an Illinois
                                  not-for-profit corporation

ATTEST OR WITNESS:


By /s/                              By /s/
  ------------------------------      -------------------------------
Title        ASSISTANT                Title   SENIOR VICE PRESIDENT
     ---------------------------            -------------------------

2

SEVENTH AMENDMENT

THIS Seventh AMENDMENT is made as of this 19th day of September 1983, between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, a national banking association of Chicago, Illinois not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord"), and

CHICAGO MERCANTILE EXCHANGE,
an Illinois not-for-profit corporation

("Tenant")

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a Lease dated May 11, 1981 pursuant to which Tenant leased 160,784 square feet on the Upper Lobby Level and the 2nd-8th floors of the building located at 30 South Wacker Drive, Chicago, Illinois ("Building"); and a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; a Fourth Amendment to Lease dated July 28, 1982; a Fifth Amendment to Lease dated October 7, 1982; and a Sixth Amendment to Lease dated July 5, 1983 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Seventh Amendment for the purpose of amending the Lease;

NOW, THEREFORE, for a good and valuable consideration, the receipt and sufficiency being hereby acknowledged, Landlord and Tenant agree as follows:

I. DESIGN CALCULATIONS CORRECTIONS.

A. The exhibits marked "Current Exhibit A-1", "New Exhibit A-2", "Current Exhibit A-3", "New Exhibit "A-4", "Current Exhibit "A-5", "New Exhibit A-6", "New Exhibit A-7" and "New Exhibit A-8" are hereby stricken in their entirety and replaced by the exhibits marked "Exhibit AA-1 (dated November 10, 1983), AA-2, AA-3, AA-4, AA-5, AA-6, AA-7 and AA-8" dated July 20, 1983 and attached hereto.

B. The Title Page of the Lease is amended by deleting "160,784 Square Feet on the Upper Lobby Level and 2nd-8th Floors" and inserting in lieu thereof "161,160 Square Feet on the Upper Lobby Level and 2nd-8th Floors".

1

C. The Witnesseth Section of the Lease is amended by deleting in line 3 "160,784 Square Feet on the Upper Lobby Level and 2nd-8th Floors" and inserting in lieu thereof "161,160 Square Feet on the Upper Lobby Level and 2nd-8th Floors".

D. The total Base Rent of $67,027,400.40 payable as set forth in Section 1 of the Lease is amended to be a total Base Rent of $67,179,680.40 as set forth in said Section 1 of the Lease except that it shall be payable as follows:

1. 120 equal monthly installments of $287,873.17 to be paid in advance on or before the first day of each month during the period beginning on the Commencement Date and ending on the day before the tenth (10th) Anniversary; and

2. 120 equal monthly installments of $271,957.50 to be paid in advance on or before the first day of each month during the period beginning on the tenth (10th) Anniversary and ending on the Termination Date.

E. Section 2(a)(vii) is amended by striking "1,031,323" in line one (1) and inserting in lieu thereof "1,033,628".

F. Section 2(a)(viii) is amended by striking "160,784" in line one (1) and inserting in lieu thereof "161,160".

G. INTENTIONALLY OMITTED.

H. Section 2(d) is amended by striking $5,672,276.50" in line two (2) and inserting in lieu thereof $5,684,954.00".

I. Section 31.A. of the Lease is amended by striking out column "B" and inserting in lieu thereof:

" $ 204,106.50
204,106.50
204,106.50
$ 612,319.50 "

J. Section 38 of the Lease is amended by:

1. striking out "13,643" in line 3 of Section 38.A. and inserting in lieu thereof "13,702"; and

2. striking and deleting "Exhibit A-1a" and replacing it with "Exhibit AA-1a" attached hereto; and

3. striking out "$253,214.00" in line 2 of Section 38.A.2. and inserting in lieu thereof "$254.309.12"; and

4. striking out "$505,337.00" in line 2 of Section 38.A.3. and inserting in lieu thereof "$507,522.08"; and

2

5. deleting and striking out the first sentence of Section 38.B.1. in its entirety and inserting in lieu thereof the following:

"1. A lease on the Members Lease Form for a twenty (20) year term (with no Work Letter and no Attachment "A") shall be prepared to reflect total Base Rent of SIX MILLION EIGHT HUNDRED FIFTY THOUSAND NINE HUNDRED NINETY-NINE AND 20/100 DOLLARS ($6,850,999.20) payable in two hundred forty (240) monthly installments of TWENTY EIGHT THOUSAND FIVE HUNDRED FORTY-FIVE AND 83/100 DOLLARS (428.545.83)".

6. by striking out "$505,337.00" in line 2 of Section 38.B.4. and inserting in lieu thereof "$507.522.08"; and

7. striking out Sections 38.B.5.(a), 38.B.5.(b) and 38.B.5.(c) in their entirety; and

8. deleting "and the Advance under Section 38.(B) (5)", in lines 3 and 4 in
Section 38.D. and inserting in line three (3) before "the Credit" the work "and"; and

9. deleting "28.57%" in Section 38.D.1. and inserting in lieu thereof "50%"; and

10. deleting "28.57% in Section 38.D.2. and inserting in lieu thereof "50%"; and

11. deleting Section 38.D.3. in its entirety.

12. Section I.A. of the Third Amendment to Lease is amended by deleting "$48,235.20 (160,784 X $0.30)" and inserting in lieu thereof "$48,348.00 (161,160 X $0.30)".

II. THIRD ADDITIONAL SPACE

A. The demised premises are increased from 161,160 Square Feet on the Upper Lobby Level and 2nd-8th Floors *inclusive) to 171,601 Square Feet on the Upper Lobby Level and 2nd through 8th Floors (inclusive) and the 10th floor by the addition of 10,441 square feet on the 10th floor as shown on Exhibit "A-10" dated October 20, 1983, attached hereto ("Third Additional Space").

B. The Title Page of the Lease is amended by deleting "161,160 Square Feet on the Upper Lobby Level and 2nd-8th Floors" and inserting in lieu thereof "171,601 Square Feet on the Upper Lobby Level, the 2nd through 8th floors (inclusive) and the 10th Floor".

C. The Witnesseth Section of the Lease is amended by deleting in line 3 "161,160 Square Feet on the Upper Lobby Level and 2nd-8th Floors" and inserting in lieu thereof "171,601 Square Feet on the Upper Lobby Level, the 2nd through 8th floors (inclusive) and the 10th Floor".

D. The total Base Rent of $67,179,680.40 payable as set forth in Section 1 of the Lease is amended to be a total Base Rent of $71,408,286.00 as set forth in said Section 1 of the Lease except that it shall be payable as follows:

3

1. 120 equal month installments of $305,492.36 to be paid in advance on or before the first day of each month during the period beginning on the Commencement Date and ending on the day before the tenth (10th) Anniversary; and

2. 120 equal monthly installments of $289,576.69 to be paid in advance on or before the first day of each month during the period beginning on the tenth (10th) Anniversary and ending on the Termination Date.

E. Section 2(a)(viii) is amended by striking "161,160" in line one (1) and inserting in lieu thereof "171,601".

F. Section 2(a)(xi) is amended by striking "15.59" in line one (1) and inserting in lieu thereof "16.60".

G. Section 31.A. of the Lease is amended by striking out column "B" and inserting in lieu thereof:

" $ 221,725.69
221,725.69
221,725.69
$ 665,177.07 "

H. Section I.A. of the Third Amendment to Lease is amended by deleting "$48,348.00 (161,160 X $0.30)" and inserting in lieu thereof "$51,480.30 (171,601 X $0.30)".

I. The Commencement Date and commencement of Base Rent and/or Rent Adjustments for the initial demised premises (161,160 square feet on the Upper Lobby and 2nd-8th floors) plus any space to be added to such initial demised premises at the Commencement Date pursuant to Section 25.B.2.a. ("Gap Space"), shall not be delayed if the Third Additional Space and/or the Gap Space is not Ready for Occupancy contemporaneously with such initial demised premises.

III. RIGHT OF FIRST OFFERING.

Section 30.A.2. of the Lease is deleted in its entirety and replaced with the following:

" 2. Landlord's receipt of the Interest Notice for any portion of the Offering Space (except B.7. below) during the period commencing two (2) years prior to the expiration date of each Offering Lease (defined below) and ending 460 days thereafter. For the space on the ten (10) lowest office floors of the Phase II Tower, Tenant need not give an Interest Notice for the initial leasing of such space. Landlord shall give an Advice when it commences marketing such space. Subsequent to the initial leasing of the ten (10) lowest office floors of the Phase II Tower, an Interest Notice shall be required of Tenant as stated in this Section 30; and "

IV. CLEANING CREDIT.

Tenant shall have the right, at Tenant's expense, to contract separately for all cleaning services to be provided by Landlord (or Landlord's contractor(s)) pursuant to Section 3(a)(iv) of the Lease so long as such separate contract and

4

the services to be rendered pursuant thereto do not create any jurisdictional or other labor disputes for Landlord. Tenant shall notify Landlord of its intention to contract separately for cleaning services pursuant to the provisions of this Section, and Landlord shall remit to Tenant, monthly, as and for Landlord's payment for such cleaning services separately contracted for, an amount equal to actual costs saved by Landlord by reason of Landlord's discontinuance of cleaning services for the demised premises. Tenant's said notice to Landlord shall not be less than three (3) months in advance of the date of commencement of such separate cleaning services. All such separate cleaning services shall be performed in accordance with Landlord's reasonable rules and regulations. It is understood and agreed that should Tenant contract separately for its cleaning services as aforesaid with a contractor other than Landlord's cleaning contractor, Landlord need not provide storage or other facilities for such other contractor and, Landlord shall not act in bad faith to defeat or diminish the amount to be remitted to Tenant by reason of said actual costs saved by Landlord, by unwarrantedly increasing cleaning services to other tenants in the Building, or otherwise.

V. TERMS OF LEASE.

Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Seventh Amendment as of the date first above written.

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:

By /s/                              By /s/
  ------------------------------      -------------------------------
Title    ASSISTANT SECRETARY           Title     VICE PRESIDENT
     ---------------------------            -------------------------


                                                  TENANT

                                  CHICAGO MERCANTILE EXCHANGE, an Illinois
                                  not-for-profit corporation

ATTEST


By /s/                              By /s/
  ------------------------------      -------------------------------
Title        CONTROLLER               Title   SENIOR VICE PRESIDENT
     ---------------------------            -------------------------

5

EIGHTH AMENDMENT

THIS Eighth AMENDMENT is made as of this 17th day of October 1983, between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, a national banking association of Chicago, Illinois not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord"), and
CHICAGO MERCANTILE EXCHANGE,

an Illinois not-for-profit corporation

("Tenant")

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a Lease dated May 11, 1981 pursuant to which Tenant leased 171,601 square feet on the Upper Lobby Level and the 2nd through 8th floors (inclusive) and the 10th floor of the building located at 30 South Wacker Drive, Chicago, Illinois ("Building"); and a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; a Fourth Amendment to Lease dated July 28, 1982; a Fifth Amendment to Lease dated October 7, 1982; a Sixth Amendment to Lease dated July 5, 1983; and a Seventh Amendment to Lease dated September 19, 1983 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Eighth Amendment for the purpose of amending the Lease;

NOW, THEREFORE, for a good and valuable consideration, the receipt and sufficiency being hereby acknowledged, Landlord and Tenant agree as follows:

I. ALTERATIONS AND CONSTRUCTION.

Section 8(j) of the Lease is amended by striking out the margin addition and inserting in lieu thereof the following:

"provided however, that if Tenant has on deposit with Landlord one hundred fifty percent (150%) of the lien in cash or title insurance over such lien claim and otherwise holds Landlord harmless and indemnifies Landlord, Tenant may contest the lien. Landlord shall be entitled to hold such funds until the lien is discharged of record (or paid if a notice is served), provided that Tenant may direct payment of said lien claim by Landlord from such funds if Landlord has received appropriate discharge or release documents."

1

II. UNTENANTABILITY.

Section 10 of the Lease is amended by striking out the margin addition on the lower left corner of page 9 and inserting in lieu thereof the following:

" and if the Trading Floor has not been made untenantable or if it has been made untenantable and the owner of the Trading Floor contracts for or commences the Trading Floor's construction, or repair, then this Lease shall not terminate. Landlord, at its expense, shall proceed with all due diligence to repair, restore or rehabilitate all damaged portions of the exterior of the Building, the demised premises, all other areas of the Building serving the demised premises or providing ingress to or egress therefrom (including without limitation the parking garage, Building lobbies and all areas occupied by equipment or other facilities serving the demised premise or the Trading Floor). In addition, in the event Landlord elects not to rebuild all or any portion of Five, Ten or Fifteen Year Space not then part of the demised premises, a proportionate allocation of insurance proceeds received by Landlord shall be immediately deposited in escrow with a title company or bank for the sole purpose of being used to repair, restore or rehabilitate such Five, Ten, and Fifteen Year Space when and as Tenant exercises its option to lease such Space. If, however, the demised premises or the Building and the Trading Floor are made untenantable by fire or other casualty and if the owner of the Trading Floor does not so construct or commence such reconstruction of the Trading Floor,"

III. ASSIGNMENT AND SUBLETTING.

Section 13 of the Lease is hereby deleted and stricken in its entirety and replaced with the following:

13. ASSIGNMENT-SUBLETTING.

A. Assignment. Tenant shall not assign, hypothecate, mortgage, encumber, convey this Lease or otherwise permit the use or occupancy of the demised premises or any part thereof by anyone other than Tenant without the prior written consent of Landlord. Landlord shall not unreasonably withhold its consent to an assignment except that Landlord need not consent to an assignment of this Lease, if:

1. in the reasonable judgment of Landlord the assignee is of a character or engaged in a business which is not in keeping with the standards of Landlord for the Building;

2. in the reasonable judgment of Landlord the purpose for which the assignee intends to use the demised premises are not in keeping with the standards of Landlord for the Building, or are in violation of the terms of any other leases in the Building, it being understood that the purpose for which assignee intends to use the demised premises may not be in violation of this Lease;

2

3. the assignee is either a government (or subdivision or agency thereof) or an occupant of the Building;

4. less than the remaining term of the Lease is being assigned;

5. the assignee is not, in the reasonable judgment of Landlord, solvent or does not have unencumbered assets of a value at least equal to twice the projected costs of the obligations to be assumed for the unexpired term of the Lease;

6. Tenant is in default under this Lease.

The withholding of consent by Landlord to any assignment shall not affect or diminish any right of Tenant to sublet all or any part of the Premises to any person or entity subject to the provisions of Section 13.B.

B. Subletting. Tenant shall have the right, without Landlord's consent, to sublet all or any portion of the demised premises; except that during the first twenty (20) years of the Lease term, Landlord's consent shall be required with respect to:

1. Subletting of Five Year Space to either:

a. Members who are not then tenants of the Building; or

b. Members who have leased space in the Building under a lease with a five year term;

2. Subject to subsection B.3. below, subletting more than 26,000 square feet in the aggregate to Members during the second ten (10) years of the term of the Lease; or

3. Subletting if the commencement date of the proposed sublease will occur during the six month period after Tenant has exercised an option to lease Five, Ten or Fifteen Year Space pursuant to Section 26 unless such Five, Ten or Fifteen Year Space is contiguous to a pre-existing portion of the demised premises.

C. If Tenant sublets the demised premises or any part thereof:

1. the terms and conditions of this Lease, including among other things, the use provisions, shall in no way be deemed modified, abrogated or amended.

2. Tenant shall pay Landlord as additional Base Rent, sixty percent (60%) of any excess rent (together with escalation) payable to and collected by Tenant under the sublease over the Base Rent plus Rent Adjustments payable to Landlord under this Lease, except that notwithstanding any other provision of this Lease, there shall be no abatement or reduction of Base Rent or Rent Adjustments as a result of amounts payable pursuant to clause 2. Of this Section 13.C. Such excess rent shall first be reduced by sixty percent (60%) of the following:

3

a. subletting commissions;

b. advertising or legal expenses involved in the subletting or in subsequently enforcing the terms thereof; and

c. Tenant's actual expenditures for improvements it is required to make as a result of the sublease except that such improvement expense for purposes of this reduction may not exceed sixty percent (60%) of ten percent (10%) of any project excess rent together with escalation.

3. Landlord shall be provided a copy of the subletting documents within ten (10) days after their complete execution;

4. the subletting documents must contain default provisions similar to those contained in this Lease in the event of a default under the sublease Tenant agrees to use reasonable efforts to promptly enforce such provisions.

D. In the event of any assignment or subletting the liability of Tenant for the demised premises shall in no way be deemed modified, abrogated or amended. "

IV. MISCELLANEOUS.

Section 24(l) of the Lease is deleted and stricken in its entirety and replaced with the following:

" (1) Landlord and Tenant agree (upon thirty (30) days or more advance notice) each will deliver to the other a written statement certifying:

(1) that this Lease is unmodified and in full force and effort (or if there have been modifications that the same is in full force and effect as modified and identifying the modifications),

(2) the dates to which Base Rent, Rent Adjustments, Rent Adjustment Deposits and other charges have been paid,

(3) that so far as the person making the certificate knows, the other is not in default under the Lease, if such be the case, and

(4) such other information as shall be reasonably required by either Landlord or Tenant. "

V. RETAIL SPACE.

Section 36 of the Lease is hereby deleted and stricken

4

in its entirety.

VI. PRIVATE RESTAURANT CLUB SPACE.

Section 38 of the Lease is hereby deleted and stricken in its entirety.

VII. TERMS OF LEASE.

Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Eighth Amendment as of the date first above written.

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:

By /s/                            By /s/
  --------------------------        ---------------------------
  Title  ASSISTANT SECRETARY        Title     VICE PRESIDENT
       ---------------------             ----------------------


                                                 TENANT

                                  CHICAGO MERCANTILE EXCHANGE, an Illinois
                                  not-for-profit corporation

ATTEST:

By /s/                            By /s/
  --------------------------        ---------------------------
  Title  CONTROLLER                 Title SENIOR VICE PRESIDENT
       ---------------------             ----------------------

5

NINTH AMENDMENT

THIS Ninth AMENDMENT is made as of this 3rd day of December 1984, between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, a national banking association of Chicago, Illinois not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord"), and

CHICAGO MERCANTILE EXCHANGE,
an Illinois not-for-profit corporation

("Tenant")

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a Lease dated May 11, 1981 pursuant to which Tenant leased 171,601 square feet on the Upper Lobby Level, 2nd through 8th and 10th Floors of the building located at 30 South Wacker Drive, Chicago, Illinois ("Building"); and a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; a Fourth Amendment to Lease dated July 28, 1982; a Fifth Amendment to Lease dated October 7, 1982; a Sixth Amendment to Lease dated July 5, 1983; a Seventh Amendment to Lease dated September 19, 1983; and an Eighth Amendment to Lease dated October 17, 1983 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Ninth Amendment for the purpose of amending the Lease;

NOW, THEREFORE, for a good and valuable consideration, the receipt and sufficiency being hereby acknowledged, Landlord and Tenant agree as follows:

I. SECOND SPACE.

Effective December 1, 1983, the Second Space (Section I.I. of the Second Amendment) of 40,208 square feet is amended to 29,117 square feet, the reduction being calculated as follows:

First Reservation Space (Section 25.A.1)              400,000 square feet

        less First Reservation
        Space leased by Tenant                       (131,393) square feet*

        less First Reservation
        Space leased by Members                      (253,265) square feet

        less Gap Space                                 (4,251) square feet

Reduction                                              11,091 square feet

* Effective December 1, 1983, the First Reservation Space leased by Tenant is 142,484 square feet.

1

II. BASE RENT.

The total Base Rent of $71,408,286.00 payable as set forth in
Section 1 of the Lease is amended to be a total Base Rent of $70,881,463.20 as set forth in said Section 1 of the Lease except monthly installments of Base Rent shall be payable as follows:

A. One hundred twenty (120) equal monthly installments of $301,102.17 to be paid in advance on or before the first day of each month during the period beginning December 1, 1983 (Commencement Date) and ending November 30, 1993; and

B. One hundred twenty (120) equal monthly installments of $289,576.69 to be paid in advance on or before the first day of each month during the period beginning December 1, 1993 and ending November 30, 2003 (Termination Date).

III. TENANT CREDIT.

A. Landlord, if Tenant is not in default under the Lease, hereby grants Tenant a credit of $56,148.18 to be applied against monthly installments of Base Rent as follows:

    Month                        Amount
    -----                        ------
January, 1984                  $18,716.06
February, 1984                  18,716.06
March, 1984                     18,716.06
                               ----------
                Total          $56,148.18

B. The balance of Base Rent and/or Rent Adjustments due for any month to which a credit has been applied shall be paid as provided in Sections 1 and 2 of the Lease.

2

IV. TERMS OF LEASE.

Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Ninth Amendment as of the date first above written.

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:

By /s/                            By /s/
  ----------------------------      ---------------------------
  Title  SECOND VICE PRESIDENT    Title     VICE PRESIDENT
       -----------------------           ----------------------


                                                 TENANT

                                  CHICAGO MERCANTILE EXCHANGE, an Illinois
                                  not-for-profit corporation

ATTEST:

By /s/                            By /s/
  --------------------------        ---------------------------
  Title  HOME COUNSEL               Title SENIOR VICE PRESIDENT
       ---------------------             ----------------------


TENTH AMENDMENT

THIS Tenth AMENDMENT is made as of this 16th day of March 1987, between AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, a national banking association of Chicago, Illinois not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268 ("Landlord"), and

CHICAGO MERCANTILE EXCHANGE,
an Illinois not-for-profit corporation

("Tenant")

WITNESSETH:

WHEREAS, Landlord and Tenant entered into a Lease dated May 11, 1981 pursuant to which Tenant leased 171,601 square feet on the Upper Lobby Level, 2nd through 8th and 10th Floors of the building located at 30 South Wacker Drive, Chicago, Illinois ("Building"); a First Amendment to Lease dated February 1, 1982; a Second Amendment to Lease dated April 26, 1982; a Third Amendment to Lease dated June 29, 1982; a Fourth Amendment to Lease dated July 28, 1982; a Fifth Amendment to Lease dated October 7, 1982; a Sixth Amendment to Lease dated July 5, 1983; a Seventh Amendment to Lease dated September 19, 1983; an Eighth Amendment to Lease dated October 17, 1983, and a Ninth Amendment dated December 3, 1984 (hereinafter collectively referred to as "Lease"); and

WHEREAS, Landlord and Tenant desire to enter into this Tenth Amendment for the purpose of amending the Lease;

I. Adjustment of First Reservation Space and Second Space.

A. Effective December 1, 1983, the Second Space of 29,117 square feet as adjusted pursuant to Section I of the Ninth Amendment is decreased to 28,595 square feet, and the First Reservation Space leased by Tenant of 142,484 square feet as adjusted pursuant to Section I of the Ninth Amendment is increased to 143,006 square feet.

B. 1. By reason of said adjustment, Landlord, if Tenant is not in default under the Lease, shall grant Tenant a credit of $2,642.64 to be applied against Base Rent as it becomes due under the Lease. $2,642.64 is calculated as follows:

(522 X $20.25)

-------------- X 3 = $2,642.64

12

2. The balance of Base Rent and/or Rent Adjustments due for any month in which a credit has been applied shall be paid as provided in Sections 1 and 2 of the Lease.

1

II. Fourth Additional Space.

Retroactively effective June 1, 1984:

A. The demised premises are increased from 171,601 square feet on the Upper Lobby Level, 2nd-8th and 10th floors of the Building to 175,330 square feet on the Upper Lobby Level, 2nd-8th, 10th, 14th, 15th and 17th floors of the Building by addition of the 1,404 square feet on the 14th floor shown on Exhibit "A-1", the 699 square feet and 350 square feet on the 15th floor shown on Exhibits "A-2" and "A-3" respectively and the 928 square feet and 348 square feet on the 17th floor shown on Exhibits "A-4" and "A-5" respectively (such 3,729 square feet is hereinafter collectively referred to as "Fourth Additional Space").

B. The Title Page of the Lease is amended by deleted 171,601 Square Feet on the Upper Lobby Level, the 2nd through 8th floors (inclusive) and the 10th Floors and inserting in lieu thereof 175,330 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors; and

C. The Witnesseth Section of the Lease is amended by deleting in line 3 171,601 Square Feet on the Upper Lobby Level, the 2nd through 8th floors (inclusive) and the 10th Floor and inserting in lieu thereof 175,330 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th, and 17th Floors; and

D. The term for the Fourth Additional Space shall commence and thereupon be considered demised premises subject to all terms and conditions of the Lease; and

E. Section 2(a)(viii) of the Lease is amended by striking 171,601 in line 1 and inserting in lieu thereof 175,330; and

F. Section 2(a)(xi) is amended by striking 16.60 in line 1 and inserting in lieu thereof 16.96; and

G. All references to Gap Space under the Lease shall be deemed to refer to Fourth Additional Space.

III. First Deletion Space.

Retroactively effective March 31, 1986:

A. The demised premises are decreased from 175,330 square feet on the Upper Lobby Level, 2nd-8th, 10th, 14th, 15th and 17th floors of the Building to 174,982 square feet on the Upper Lobby Level, 2nd-8th, 10th, 14th, 15th and 17th floors of the Building by deletion of the 348 square feet on the 17th floor shown on attached Exhibit "B" ("First Deletion Space").

B. The Title Page of the Lease is amended by deleting 175,330 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors and inserting in lieu thereof 174,982 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors; and

2

C. The Witnesseth Section of the Lease is amended by deleting in line 3 175,330 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors and inserting in lieu thereof 174,982 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors; and

D. Section 2(a) (viii) of the Lease is amended by striking 175,330 in line 1 and inserting in lieu thereof 174,982; and

E. Section 2(a) (xi) is amended by striking 16.96 in line 1 and inserting in lieu thereof 16.93.

IV. Fifth Additional Space.

Effective April 1, 1987:

A. The demised premises are increased from 174,982 square feet on the Upper Lobby Level, 2nd-8th, 10th, 14th, 15th and 17th floors of the Building to 176,363 square feet on the Upper Lobby Level, 2nd-8th, 10th, 14th, 15th and 17th floors of the Building by addition of the 1,381 square feet on 10th floor shown on attached Exhibit "C" ("Fifth Additional Space").

B. The Title Page of the Lease is amended by deleting 174,982 Square Feet on the Upper Lobby Level, 2nd through 8th Floors (inclusive), and the 10th, 14th, 15th and 17th floors and inserting in lieu thereof 176,363 square feet on the Upper Lobby Level, 2nd through 8th Floors (inclusive), and the 10th, 14th, 15th and 17th Floors; and

C. The Witnesseth Section of the Lease is amended by deleting in line 3 174,982 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors and inserting in lieu thereof 176,363 Square Feet on the Upper Lobby Level, the 2nd through 8th Floors (inclusive) and the 10th, 14th, 15th and 17th Floors; and

D. Section 2(a)(viii) of the Lease is amended by striking 174,982 in line 1 and inserting in lieu thereof 176,363; and

E. Section 2(a)(ix) of the Lease is amended by striking 16.93 in line 1 and inserting in lieu thereof 17.06; and

F. Section 26.A. of the Lease is amended by striking 24,000 and inserting in lieu thereof 22,619.

VI. Base Rent.

The total Base Rent of $70,881,463.20 payable as set forth in
Section 1 of the Lease is amended to be a total Base Rent of $72,670,748.06 as set forth in said Section 1 of the Lease except monthly installments of Base Rent shall be payable as follows:

3

A. six (6) equal monthly installments of $300,895.55 to be paid in advance on or before the first day of each month during the period beginning December 1, 1983 and ending May 31, 1984; and

B. twenty-two (22) equal monthly installments of $307,188.24 to be paid in advance on or before the first day of each month during the period beginning June 1, 1984 and ending March 31, 1986; and

C. twelve (12) equal monthly installments of $306,600.99 to be paid in advance on or before the first day of each month during the period beginning April 1, 1986 and ending March 31, 1987; and

D. eighty (80) equal monthly installments of $308,931.43 to be paid in advance on or before the first day of each month during the period beginning April 1, 1987 and ending November 30, 1993; and

E. one hundred twenty (120) equal monthly installments of $297,612.56 to be paid in advance on or before the first day of each month during the period beginning December 1, 1993 and ending November 30, 2003.

VII. Preparation of the Fourth Additional Space.

Landlord agrees to prepare the Fourth Additional Space in accordance with the terms of the Work Letter attached to the Lease and dated May 11, 1981 providing the Building Standard Work installation of Landlord as described on Attachment "A" of said Work Letter.

VIII.Condition of the Fifth Additional Space.

Tenant agrees to accept the Fifth Additional Space (including improvements and personality, if any) in its condition and as-built configuration existing on the earlier of the date Tenant takes possession of the Fifth Additional Space or April 1, 1987.

IX. Estoppel Certificates.

Tenant agrees, upon the occupancy of the Fourth Additional Space, to execute Estoppel Certificates in the form of attached "D" as required by Teachers Insurance and Annuity Association of America.

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X. TERMS OF LEASE.

Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

IN WITNESS WHEREOF, the parties hereto have executed this Tenth Amendment as of the date first above written.

This instrument is executed by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO, not personally but solely as Trustee, as aforesaid. All the covenants and conditions to be performed hereunder by AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO are undertaken by it solely as Trustee, as aforesaid and not individually, and no personal liability shall be asserted or be enforceable against AMERICAN NATIONAL BANK AND TRUST COMPANY OF CHICAGO by reason of any of the covenants, statements, representations or warranties contained in this instrument.

LANDLORD

AMERICAN NATIONAL BANK AND TRUST COMPANY OF
CHICAGO, ILLINOIS, a national banking
association of Chicago, Illinois, not
individually but solely as Trustee under the
provisions of a certain Trust Agreement dated
March 20, 1980, and known as Trust No. 48268.

ATTEST:

By /s/                            By /s/
  ----------------------------      ---------------------------
  Title  SECOND VICE PRESIDENT    Title  SECOND VICE PRESIDENT
       -----------------------           ----------------------


                                                 TENANT

                                  CHICAGO MERCANTILE EXCHANGE, an Illinois
                                  not-for-profit corporation

ATTEST OR WITNESS:

By /s/                            By /s/
  --------------------------        ---------------------------
  Title  CONTROLLER                 Title SENIOR VICE PRESIDENT
       ---------------------             ----------------------

5

ELEVENTH AMENDMENT

This Eleventh Amendment (the "Amendment") is made and entered into as of February 1, 1999, but and between EOP-10 & 30 SOUTH WACKER, L.L.C., a Delaware limited liability company, as beneficiary of land trust dated October 1, 1997, and known as American National Bank and Trust Company of Chicago Trust No. 123434-06 ("Landlord"), and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH

A. WHEREAS, Landlord (as successor in interest to American National Bank and Trust Company of Chicago, Illinois, a national banking association of Chicago, Illinois not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268) and Tenant are parties to that certain lease dated the 11th day of May, 1981, for space currently containing approximately 176,363 rentable square feet (the "Current Premises") on the upper lobby level, 2nd through 8th, 10th, 14th, 15th and 17th floors of the building commonly known as 30 South Wacker Drive and the address of which is 30 South Wacker Drive, Chicago, Illinois (the "Building"), which lease has been previously amended by instruments dated February 1, 1982 ("First Amendment"), April 26, 1982 ("Second Amendment"), June 29, 1982 ("Third Amendment"), July 28, 1982 ("Fourth Amendment"), October 7, 1982 ("Fifth Amendment"), July 5, 1982 ("Sixth Amendment"), September 19, 1982 ("Seventh Amendment"), October 17, 1983 ("Eighth Amendment"), December 3, 1984 ("Ninth Amendment"), and March 16, 1987 ("Tenth Amendment") (collectively, the "Lease"); and

B. WHEREAS, Tenant has requested that additional space known as Suite No. 2003 containing approximately 2,783 rentable square feet on the 20th floor of the Building shown on Exhibit A hereto (the "2003 Temporary Space") be added to the Premises on a temporary basis and that the Lease be appropriately amended and Landlord is willing to do the same on the terms and conditions hereinafter set forth;

C. WHEREAS, Tenant has requested that additional space known as Suite No. 3301 containing approximately 3,241 rentable square feet on the 33rd floor of the Building shown on Exhibit B hereto (the "3301 Temporary Space") be added to the Premises on a temporary basis and that the Lease be appropriately amended and Landlord is willing to do the same on the terms and conditions hereinafter set forth;

D. WHEREAS, Tenant has requested that additional space containing approximately 23,791 rentable square feet on the ninth (9th) floor of the Building shown on Exhibit C hereto (the "9th Floor Expansion Space") be added to the Premises and that the Lease be appropriately amended and Landlord is willing to do the same on the terms and conditions hereinafter set forth;

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Landlord and Tenant agree as follows:

I. Temporary Expansion and Effective Dates.

A. 2003 Temporary Space. For the period commencing on January 1, 1999 (the "2003 Temporary Expansion Effective Date") and ending on May 31, 1999 (the "2003 Temporary Expansion Termination Date") (said period between the 2003 Temporary Expansion Effective Date and the 2003 Temporary Expansion Termination Date being referred to herein as the "2003 Expansion Term"), the Premises, as defined in the Lease, is temporarily increased by 2,783 rentable square feet by the addition of the 2003 Temporary Space, and during the 2003 Expansion Term the 2003 Temporary Space shall be deemed part of the Premises, as defined in the Lease. The 2003 Temporary Space is subject to all the terms and conditions of the Lease except as expressly modified herein and except that Tenant shall not be entitled to receive any allowances, abatement or other financial concession granted with respect to any other portion of the Premises unless such concessions are expressly provided for herein with respect to the 2003 Temporary Expansion Space.


B. 3301 Temporary Space. For the period commencing on February 1, 1999 (the "3301 Temporary Expansion Effective Date") and ending on the last day of the calendar month designated by Landlord or Tenant in a notice of termination given no later than thirty (30) days prior to the designated date of termination, (the "3301 Temporary Expansion Termination Date"), which 3301 Temporary Expansion Effective date shall, in no event be prior to July 31, 1999 (said period between the 3301 Temporary Expansion Effective Date and the 3301 Temporary Expansion Termination Date being referred to herein as the "3301 Expansion Term"), the Premises, as defined in the Lease, is temporarily increased by 3,241 rentable square feet by the addition of the 3301 Temporary Space, and during the 3301 Temporary Expansion Space Term the 3301 Temporary Expansion Space shall be deemed part of the Premises, as defined in the Lease. The 3301 Temporary Space is subject to all the terms and conditions of the Lease except as expressly modified herein and except that Tenant shall not be entitled to receive any allowances, abatement or other financial concession granted with respect to any other portion of the Premises unless such concessions are expressly provided for herein with respect to the 3301 Temporary Expansion Space.

C. 9th Floor Expansion Space. Effective as of the Expansion Effective Date (as hereinafter defined) the Premises, as defined in the Lease, is increased by 23,791 rentable square feet by the addition of the Expansion Space, and from and after the Expansion Effective Date, the Premises, as defined in the Lease, shall be deemed to include the 9th Floor Expansion Space. The Lease Term for the 9th Floor Expansion Space shall commence on the Expansion Effective Date and end on the Termination Date. The 9th Floor Expansion Space is subject to all the terms and conditions of the Lease except as expressly modified herein and except that Tenant shall not be entitled to receive any allowances, abatements or other financial concessions granted with respect to the Premises unless such concessions are expressly provided for herein with respect to the 9th Floor Expansion Space.

1. The Expansion Effective Date shall be July 1, 1999 (the "Target Expansion Effective Date"), or such later date as possession is delivered to Tenant pursuant to clause 2 below.

2. The Expansion Effective Date shall be delayed on a day for day basis to the extent that Landlord fails to deliver possession of the Expansion Space on or before April 1, 1999, for any reason, including but not limited to, holding over by prior occupants. Any such delay in the Expansion Effective Date shall not subject Landlord to any liability for any loss or damage resulting therefrom. Notwithstanding the foregoing, Landlord will use commercially reasonable efforts to obtain possession of the Expansion Space from the prior occupants, and Tenant will cooperate with Landlord in connection with such efforts. If the Expansion Effective Date is delayed, the Termination Date under the Lease shall not be similarly extended. If the Expansion Effective Date is delayed beyond September 1, 1999 (the "Outside Expansion Date"), and Tenant has cooperated with Landlord in connection with Landlord's efforts to obtain possession as set forth above, then Tenant, as its sole remedy (provided Landlord has used commercially reasonable efforts to obtain possession of the Expansions Space from the prior occupants as set forth above), may terminate this Amendment as to the Expansion Space by giving Landlord written notice of termination on or before the date Landlord has tendered possession of the Expansion Space to Tenant.

II. Monthly Base Rent

A. 2003 Temporary Space. Tenant shall not be obligated to pay Base Rent or Rent Adjustment for the 2003 Temporary Space during the 2003 Temporary Expansion Space Term; however, if Tenant holds over in the

2

2003 Temporary Space beyond the 2003 Temporary Expansion Space Term, Tenant's holdover rent shall be calculated in accordance with the provisions of the Lease but assuming that Base Rent for the 2003 Expansion Space was Four Thousand Six Hundred Thirty Eight and 33/100 Dollars ($4,638.33) per month.

B. 3301 Temporary Space. In addition to Tenant's obligation to pay Base Rent for the Current Premises, and, as applicable, the 9th Floor Expansion Space, during the 3301 Temporary Expansion Space Term, Tenant shall pay Landlord the sum of Nine Thousand Five Hundred and No/100 Dollars ($9,500.00) per month as Base Rent for the 3301 Temporary Space hereunder, with each such installment payable on or before the first day of each month during the period beginning on the 3301 Temporary Expansion Effective Date and ending on the 3301 Temporary Expansion Termination Date hereunder, prorated for any partial month within the 3301 Temporary Expansion Space Term. Tenant shall not be responsible for any Rent Adjustment with respect to the 3301 Temporary Expansion Space, including Expenses or Taxes.

C. 9th Floor Expansion Space. In addition to Tenant's obligation to pay Base Rent for the Current Premises and the 3301 Temporary Space, Tenant shall pay Landlord the sum of One Million Nine Hundred Three Thousand Eight Hundred Sixty Three and 12/100 Dollars ($1,903,863.12) as Base Rent for the Expansion Space in fifty three (53) monthly installments as follows:

1. Twelve (12) equal installments of Thirty Four Thousand One Hundred and 43/100 Dollars ($34,100.43) each payable on or before the first day of each month during the period beginning on the Expansion Effective Date and ending June 30, 2000.

2. Twelve (12) equal installments of Thirty Five Thousand One Hundred Twenty Three and 44/100 Dollars ($35,123.44) each payable on or before the first day of each month during the period beginning July 1, 2000 and ending June 30, 2001.

3. Twelve (12) equal installments of Thirty Six Thousand One Hundred Seventy Seven and 14/100 Dollars ($36,177.14) each payable on or before the first day of each month during the period beginning July 1, 2001 and ending June 30, 2002.

4. Twelve (12) equal installments of Thirty Seven Thousand Two Hundred Sixty Two and 45/100 Dollars ($37,262.45) each payable on or before the first day of each month during the period beginning July 1, 2002 and ending June 30, 2003.

5. Five (5) equal installments of Thirty Eight Thousand Three Hundred Eighty and 32/100 Dollars ($38,380.32) each payable on or before the first day of each month during the period beginning July 1, 2003 and ending November 30, 2003.

All such Base Rent shall be payable by Tenant in accordance with the terms of Section 1 of the Lease. Landlord and Tenant acknowledge that the foregoing schedule is based on the assumption that the Expansion Effective Date is the Target Expansion Effective Date. If the Expansion Effective Date is other than the Target Expansion Effective Date, the schedule set forth above with respect to the payment of any installment(s) of Base Rent for the Expansion Space shall be appropriately adjusted on a per diem basis to reflect the actual Expansion Effective Date and the actual Expansion Effective Date shall be set forth in a confirmation letter to be prepared by Landlord. In such event, the effective date of any increases in the Base Rental rate shall be similarly postponed as a result of an adjustment of the Expansion Effective Date as provided above.

III. Tenant's Proportion and Rent Adjustments. For the period commencing with the 9th Floor Expansion Effective Date and ending on the Termination Date,

3

Tenant's Proportion for the 9th Floor Expansion Space is two and three thousand seventeen ten-thousandths percent (2.3017%). For the period commencing with the 9th Floor Expansion Effective Date and ending on the Termination Date, Tenant shall pay for its Proportion of Expenses and Taxes applicable to the Expansion Space in accordance with the terms of the Lease, provided, however, with respect to the Expansion Space only, during such period, Section 2(d) of the Lease is hereby amended by striking "$5,684,954.00" and inserting in lieu thereof "$0.00".

4

IV. Improvements

A. Condition. Tenant has inspected the 2003 Temporary Space, the 3301 Temporary Space and the 9th Floor Expansion Space and agrees to accept the same "as is" as of the date of this Amendment (ordinary wear and tear excepted) without any agreements, representations, understandings or obligations on the part of Landlord to perform any alterations, repairs or improvements.

B. Cost of Improvements. Any construction, alterations or improvement made to the 2003 Temporary Space, the 3301 Temporary Space and the 9th Floor Expansion Space shall be made at Tenant's sole cost and expense.

C. Responsibility for Improvements. Any construction, alterations or improvements to the 2003 Temporary Space, the 3301 Temporary Space and the 9th Floor Expansion Space shall be performed by Tenant using contractors selected by Tenant and approved by Landlord and shall be governed in all respects by the provisions of Section 8 of the Lease. In any and all events, neither the Temporary Expansion Effective Date nor the Expansion Effective Date shall be postponed or delayed if the initial improvements to the Temporary Expansion Space or the Expansion Space are incomplete on the respective Expansion Effective Dates for any reason whatsoever. Any delay in the completion of initial improvements to the Temporary Expansion Space or Expansion Space shall not subject Landlord to any liability for any loss or damage resulting therefrom.

V. Early Access. Provided that the 9th Floor Expansion Space has been vacated by the current tenant thereof, Tenant may occupy the 9th Floor Expansion Space from and after April 1, 1999. During any period that Tenant shall be permitted to take possession of the 9th Floor Expansion Space prior to the Expansion Effective Date, Tenant shall comply with all the terms and provisions of the Lease, except those provisions requiring payment of Base Rent or Rent Adjustments as to the 9th floor Expansion Space. Landlord will tender possession of the 9th Floor Expansion Space to Tenant immediately after Landlord obtains such possession from the current tenant in said space.

VI. No Extension or Expansion Options. The parties hereto acknowledge and agree that any option or other rights contained in the Lease which entitle Tenant to extend the term of the Lease or expand the Premises shall apply only to the Premises and shall not be applicable to the 2003 Temporary Space or the 3301 Temporary Space in any manner.

VII. Holdover. If Tenant should holdover in the 2003 Temporary Space or the 3301 Temporary Space after expiration or termination of the applicable term, any remedies available to Landlord as a consequence of such holdover contained in Section 17 of the Lease or otherwise shall be applicable, but only with respect to the applicable temporary space and shall not be deemed applicable to the Premises unless and until Tenant holds over in the Premises after expiration or earlier termination of the Lease Term.

VIII. Miscellaneous.

A. This Amendment sets forth the entire agreement between the parties with respect to the matter set forth herein. There have been no additional oral or written representations or agreements. Under no circumstances shall Tenant be entitled to any Rent abatement, improvement allowance, leasehold improvements, or other work to the Premises, or any similar economic incentives that may have been provided Tenant in connection with entering into the Lease, unless specifically set forth in this Amendment.

B. Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

5

C. In the case of any inconsistency between the provisions of the Lease and this Amendment, the provisions of this Amendment shall govern and control.

D. Submission of this Amendment by Landlord is not an offer to enter into this Amendment but rather is a solicitation for such an offer by Tenant. Landlord shall not be bound by this Amendment until Landlord has executed and delivered the same to Tenant.

E. The capitalized terms used in this Amendment shall have the same definitions as set forth in the Lease to the extent that such capitalized terms are defined therein and not redefined in this Amendment.

F. Tenant hereby represents to Landlord that Tenant has dealt with no broker except for the Levy Organization ("Broker") in connection with this Amendment. Tenant agrees to indemnify and hold Landlord, its members, principals, beneficiaries, partners, officers, directors, employees, mortgagee(s) and agents, and the respective principals and members of any such agents (collectively, the "Landlord Related Parties") harmless from all claims of any brokers, other than Broker, claiming to have represented Tenant in connection with this Amendment. Landlord hereby represents to Tenant that Landlord has dealt with no broker in connection with this Amendment. Landlord agrees to indemnify and hold Tenant, its members, principals, beneficiaries, partners, officers, directors, employees, and agents, and the respective principals and members of any such agents (collectively, the "Tenant Related Parties") harmless from all claims of any brokers claiming to have represented Landlord in connection with this Amendment.

IN WITNESS WHEREOF, Landlord and Tenant have duly executed this Amendment as of the day and year first above written.

LANDLORD: EOP-10&30 SOUTH WACKER, L.L.C., a
Delaware limited liability company, as
beneficiary of land trust dated October
1, 1997, and known as American national
Bank and Trust Company of Chicago Trust
No. 123434-06

By: EOP Operating Limited Partnership, a
Delaware limited partnership, its sole
member

By: Equity Office Properties Trust, a
Maryland real estate investment
trust, its managing general partner

By: /s/ George Kohl
   -----------------------------
Name:       George Kohl
     ---------------------------
Title:  Vice President Leasing
      --------------------------

TENANT: CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

By: /s/ David G. Gomach
   ---------------------------------------
Name:   David G. Gomach
     -------------------------------------
Title: Senior Vice President CFO
      ------------------------------------

6

TWELFTH AMENDMENT

This Twelfth Amendment (the "Amendment") is made and entered into as of Jun 30 1999, 1999, by and between EOP-10 & 30 SOUTH WACKER, L.L.C., a Delaware limited liability company, as beneficiary of land trust dated October 1, 1997, and know as American National Bank and Trust company of Chicago Trust No. 123434-06 ("Landlord"), and CHICAGO MERCANTILE EXCHANGE, an Illinois not-for-profit corporation ("Tenant").

WITNESSETH

A. WHEREAS, Landlord (as successor in interest to American National Bank and Trust Company of Chicago, Illinois, a national banking association of Chicago, Illinois, not individually but solely as Trustee under the provisions of a certain Trust Agreement dated March 20, 1980, and known as Trust No. 48268) and Tenant are parties to that certain lease dated the 11th day of May, 1981, for space (the "Current Premises") in the building commonly known as 30 South Wacker Drive and the address of which is 30 South Wacker Drive, Chicago, Illinois (the "Building"), which lease has been previously amended by instruments dated February 1, 1982 ("First Amendment"), April 26, 1982 ("Second Amendment"), June 29, 1982 ("Third Amendment), July 28, 1982 ("Fourth Amendment"), October 7, 1982 ("Fifth Amendment"), July 5, 1983 ("Sixth Amendment"), September 19, 1983 ("Seventh Amendment"), October 17, 1983 ("Eighth Amendment"), December 3, 1984 ("Ninth Amendment"), March 16, 1987 ("Tenth Amendment"), and February 1, 1999 (the "Eleventh Amendment") (collectively the "Lease"); and

B. WHEREAS, Tenant has requested that storage space known as M-208 containing approximately 1,060 rentable square feet and M-210 containing approximately 1,275 rentable square feet on the Mezzanine floor of the Building shown on Exhibit A hereto (the "Storage Space") be added to the Premises and that the Lease be appropriately amended and Landlord is willing to do the same on the terms and conditions hereinafter set forth;

NOW, THEREFORE, in consideration of the mutual covenants and agreements herein contained and other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, Landlord and Tenant agree as follows:

I. Storage Effective Date. Effective as of the Storage Effective Date (as hereinafter defined) the Premises, as defined in the Lease, is increased by 2,335 rentable square feet by the addition of the Storage Space, and from and after the Storage Effective Date, the Premises, as defined in the Lease, shall be deemed to include the Storage Space. The Lease Term for the Storage Space shall commence on the Storage Effective Date and end on the Termination Date. The Storage Space is subject to all the terms and conditions of the Lease except as expressly modified herein and except that Tenant shall not be entitled to receive any allowances, abatements or other financial concessions granted with respect to the Premises unless such concessions are expressly provided for herein with respect to the Storage Space.

1. The Storage Effective Date shall be July 1, 1999 (the "Target Storage Effective Date"), or such later date as possession is delivered to Tenant. The Storage Space is currently vacant and Landlord will deliver possession of the Storage Space to Tenant upon full execution of this Amendment.

2. The Storage Effective Date shall be delayed on a day for day basis to the extent that Landlord fails to deliver possession of the Storage Space on or before July 1, 1999. If the Storage Effective Date is delayed, the Termination Date under the Lease shall not be similarly extended. If the Storage Effective Date is delayed beyond September 1, 1999 (the "Outside Storage Date"), then Tenant, as its sole remedy may terminate this Amendment as to the Storage Space by giving Landlord written notice of termination on or before the date Landlord has tendered possession of the Storage Space to Tenant.


II. Monthly Storage Rent. In addition to Tenant's obligation to pay Base Rent for the Current Premises, Tenant shall pay Landlord the sum of One Hundred Sixty Two Thousand Nine Hundred Fifty Six and 80/100 Dollars ($162,956.80) as Storage Rent for the Storage Space in fifty three (53) monthly installments as follows:

1. Twelve (12) equal installments of Two Thousand Nine Hundred Eighteen and 75/100 Dollars ($2,918.75) each payable on or before the first day of each month during the period beginning on the Storage Effective Date and ending June 30, 2000.

2. Twelve (12) equal installments of Three Thousand Six and 31/100 Dollars ($3,006.31) each payable on or before the first day of each month during the period beginning July 1, 2000 and ending June 30, 2001.

3. Twelve (12) equal installments of Three Thousand Ninety Six and 50/100 Dollars ($3,096.50) each payable on or before the first day of each month during the period beginning July 1, 2001 and ending June 30, 2002.

4. Twelve (12) equal installments of Three Thousand One Hundred Eighty Nine and 39/100 Dollars ($3,189.39) each payable on or before the first day of each month during the period beginning July 1, 2002 and ending June 30, 2003.

5. Five (5) equal installments of Three Thousand Two Hundred Eighty Five and 08/100 Dollars ($3,285.08) each payable on or before the first day of each month during the period beginning July 1, 2003 and ending November 30, 2003.

All such Storage Rent shall be payable by Tenant in accordance with the terms of Section 1 of the Lease. Landlord and Tenant acknowledge that the foregoing schedule is based on the assumption that the Storage Effective Date is the Target Storage Effective Date. If the Storage Effective Date is other than the Target Storage Effective Date, the schedule set forth above with respect to the payment of any installment(s) of Storage Rent for the Storage Space shall be appropriately adjusted on a per diem basis to reflect the actual Storage Effective Date and the actual Storage Effective Date shall be set forth in a confirmation letter to be prepared by Landlord. In such event, the effective date of any increases in the Storage Rent rate shall be similarly postponed as a result of an adjustment of the Storage Effective Date as provided above.

III. Rent Adjustments. Tenant shall not be obligated to pay Rent Adjustment for the Storage Space. The addition of the Storage Space to the Premises shall not affect Tenant's Proportion or be included in the Rentable Area of the Premises for purposes of calculating the CPI portion of the Rent Adjustment or any other Rent Adjustment. However, Tenant shall pay to Landlord, as additional rent, all charges for any miscellaneous services, goods or materials furnished by Landlord at Tenant's request which are not required to be furnished by Landlord under the Lease.

IV. Improvements

A. Condition. Tenant has inspected the Storage Space and agrees to accept the same "as is" as of the date of this Amendment (ordinary wear and tear excepted) without any agreements, representations, understandings or obligations on the part of Landlord to perform any alterations, repairs or improvements.

B. Cost of Improvements. Any construction, alterations or improvement made to the Storage Space shall be made at Tenant's sole cost and expense.

2

C. Responsibility for Improvements. Any construction, alterations or improvements to the Storage Space shall be performed by Tenant using contractors selected by Tenant and approved by Landlord and shall be governed in all respects by the provisions of Section 9 of the Lease.

V. Early Access. Tenant may occupy the Storage Space from and after the full execution of this Amendment. During any period that Tenant shall be permitted to take possession of the Storage Space prior to the Storage Effective Date, Tenant shall comply with all the terms and provisions of the Lease, except those provisions requiring payment of Base Rent as to the Storage Space.

VI. Additional Storage Space Rules.

A. The Storage Space shall be used by Tenant for the storage of equipment, inventory or other non-perishable items normally used in Tenant's business, and for no other purpose whatsoever. Tenant agrees to keep the Storage Space in a net and orderly fashion and to keep all stored items in cartons, file cabinets or other suitable containers. Tenant shall not store anything in the Storage Space which is unsafe or which otherwise may create a hazardous condition, or which may increase Landlord's insurance rates, or cause a cancellation or modification of Landlord's insurance coverage. Without limitation, Tenant shall not store any flammable, combustible or explosive fluid, chemical or substance nor any perishable food or beverage products, except with Landlord's prior written approval. Landlord reserves the right to adopt and enforce reasonable rules and regulations governing the use of the Storage Space from time to time.

B. All terms and provisions of the Lease shall be applicable to this Agreement, including, without limitation, Indemnity and Waiver of Claims and Tenant's Insurance, except that Landlord need not supply air-cooling, heat, water, janitorial service, cleaning or window washing to the Storage Space.

C. At any time and from time to time, Landlord shall have the right to relocate the Storage Space to a new location which shall be no smaller than the square footage of the Storage Space.

VII. Miscellaneous.

A. This Amendment sets forth the entire agreement between the parties with respect to the matter set forth herein. There have been no additional oral or written representations or agreements. Under no circumstances shall Tenant be entitled to any Rent abatement, improvement allowance, leasehold improvements, or other work to the Premises, or any similar economic incentives that may have been provided Tenant in connection with entering into the Lease, except as provided in the case of casualty or eminent domain or as specifically set forth in this Amendment.

B. Except as herein modified or amended, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.

C. In the case of any inconsistency between the provisions of the Lease and this Amendment, the provisions of this Amendment shall govern and control.

D. Submission of this Amendment by Landlord is not an offer to enter into this Amendment but rather is a solicitation for such an offer by Tenant. Landlord shall not be bound by this Amendment until Landlord has executed and delivered the same to Tenant.

E. The capitalized terms used in this Amendment shall have the same definitions as set forth in the Lease to the extent that such capitalized terms are defined therein and not redefined in this Amendment.

F. Tenant hereby represents to Landlord that Tenant has dealt with no broker except for the Levy Organization ("Broker") in connection with this

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Amendment. Tenant agrees to indemnify and hold Landlord, its members, principals, beneficiaries, partners, officers, directors, employees, mortgagee(s) and agents, and the respective principals and members of any such agents (collectively, the "Landlord Related Parties") harmless from all claims of any brokers, including Broker, claiming to have represented Tenant in connection with this Amendment. Landlord hereby represents to Tenant that Landlord has dealt with no broker in connection with this Amendment. Landlord agrees to indemnify and hold Tenant, its members, principals, beneficiaries, partners, officers, directors, employees, and agents, and the respective principals and members of any such agents (collectively, the "Tenant Related Parties") harmless from all claims of any brokers claiming to have represented Landlord in connection with this Amendment.

IN WITNESS WHEREOF, Landlord and Tenant have duly executed this Amendment as of the day and year first above written.

LANDLORD: EOP-10&30 SOUTH WACKER, L.L.C., a Delaware
limited liability company, as beneficiary of
land trust dated October 1, 1997, and known
as American national Bank and Trust Company
of Chicago Trust No. 123434-06

By: EOP Operating Limited Partnership, a Delaware
limited partnership, its sole member

By: Equity Office Properties Trust, a
Maryland real estate investment trust,
its managing general partner

By: /s/ George Kohl
   -----------------------------
Name:       George Kohl
     ---------------------------
Title:  Vice President Leasing
      --------------------------

TENANT: CHICAGO MERCANTILE EXCHANGE, an Illinois
not-for-profit corporation

By: /s/ David G. Gomach
   ---------------------------------------
Name:   David G. Gomach
     -------------------------------------
Title: Senior Vice President CFO

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