Investment Strategies and Risks

Set forth below are detailed descriptions of the various types of securities and investment techniques that Invesco and/or the Sub-Advisers (as defined herein) may use in managing the Funds as well as the risks associated with those types of securities and investment techniques. The descriptions of the types of securities and investment techniques below supplement the discussion of principal investment strategies and risks contained in the Funds’ Prospectus. If a particular type of security or investment technique is not discussed in the Funds’ Prospectus it is not a principal investment strategy of that Fund.

Unless otherwise indicated, a Fund may invest in all of the following types of investments. The Funds may not invest in all of the security-types or use all of the techniques described below at any one time. Moreover, Invesco and/or the Sub-Advisers may invest in types of securities and may use investment techniques in managing the Funds, not specifically mentioned below. Any investment shall be

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subject to limitations imposed by a Fund’s investment objective, policies and restrictions described in the Funds’ Prospectus and/or this SAI, as well as the federal securities laws.

Any percentage limitations relating to the composition of a Fund’s portfolio identified in the Fund’s prospectus or this SAI apply at the time the Fund acquires an investment. Subsequent changes that result from market fluctuations generally will not require a Fund to sell any portfolio security. However, a Fund may be required to sell its illiquid securities holdings, or reduce its borrowings, if any, in response to fluctuations in the value of such holdings.

Generally, Premier Tax-Exempt Portfolio will invest only in tax-free securities. Premier Tax-Exempt Portfolio may, however, invest in taxable short-term investments (Taxable Investments) consisting of obligations of the U.S. Government, its agencies or instrumentalities, banks and corporations, short-term fixed income securities; commercial paper rated within the highest rating category by a recognized rating agency; certificates of deposit of domestic banks and U.S. dollar-denominated foreign securities. The Fund may invest in Taxable Investments, for example, due to market conditions or pending the investment of proceeds from the sale of its shares or proceeds from the sale of portfolio securities or in anticipation of redemptions. Although interest earned from Taxable Investments will be taxable to shareholders as ordinary income, the Fund generally intends to minimize taxable income through investments, when possible, in short-term tax-exempt securities, which may include shares of other investment companies whose dividends are tax-exempt. See also “Dividends, Distributions and Tax Matters.”

The Funds’ investment objectives, policies, strategies and practices described below are non-fundamental unless otherwise indicated.

Rule 2a-7 Requirements

As permitted by Rule 2a-7 under the 1940 Act, each Fund seeks to maintain a stable price of $1.00 per share by using the amortized cost method to value portfolio securities and rounding the share value to the nearest cent. Rule 2a-7 imposes requirements as to the diversification and liquidity of each Fund, quality of portfolio securities and maturity of the Fund and of individual securities.

Diversification. In summary, Rule 2a-7 requires that a Fund may not invest in the securities of any issuer if, as a result, more than 5% of the Fund’s total assets would be invested in that issuer; provided that, each Fund may invest up to 25% of its total assets in the First Tier Securities of a single issuer for up to three business days after acquisition. Certain securities are not subject to this diversification requirement. These include: a security subject to a guarantee from a non-controlled person (as defined in Rule 2a-7) of the issuer of the security; U.S. Government securities; certain repurchase agreements; and shares of certain money market funds. Rule 2a-7 imposes a separate diversification test upon the acquisition of a guarantee or demand feature. (A demand feature is, in summary, a right to sell a security at a price equal to its approximate amortized cost plus accrued interest).

For purposes of these diversification requirements with respect to issuers of Municipal Securities (defined under the caption Municipal Securities), each state (including the District of Columbia and Puerto Rico), territory and possession of the United States, each political subdivision, agency, instrumentality, and authority thereof, and each multi-state agency of which a state is a member is a separate “issuer.” When the assets and revenues of an agency, authority, instrumentality, or other political subdivision are separate from the government creating the subdivision and the security is backed only by assets and revenues of the subdivision, such subdivision would be deemed to be the sole issuer. Similarly, in the case of an industrial development bond or private activity bond, if such bond is backed only by the assets and revenues of the non-governmental user, then such non-governmental user would be deemed to be the sole issuer.

In summary, a “First Tier Security” is rated (or issued by an issuer that is rated) in the highest short-term rating category by the “Requisite NRSROs,” or, if unrated, is determined by the Fund

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investment adviser (subject to oversight and pursuant to guidelines established by the Board) to be of comparable quality to such a rated security. Securities issued by a registered investment company that is a money market fund and U.S. Government securities are also considered to be “First Tier Securities.” The term “Requisite NRSRO” means (a) any two nationally recognized statistical rating organizations (NRSROs) (designated by the Board, if any) that have issued a rating with respect to a security or class of debt obligations of an issuer, or (b) if only one (designated, if any) NRSRO has issued a rating with respect to such security or issuer at the time a Portfolio acquires the security, that NRSRO.

Quality. The Funds may invest only in U.S. dollar denominated securities that the Portfolio’s investment adviser (subject to oversight and pursuant to guidelines established by the Board) determines present minimal credit risk and that are “Eligible Securities” as defined in Rule 2a-7. Rule 2a-7 defines an Eligible Security, in summary, as a security with a remaining maturity of 397 calendar days or less that has been rated (or whose issuer has been rated) by the Requisite NRSROs in one of the two highest short-term rating categories. Eligible Securities may also include unrated securities determined by the Funds’ investment adviser (subject to oversight and pursuant to guidelines established by the Board) to be of comparable quality to such rated securities. The eligibility of a security with a guarantee may be determined based on whether the guarantee is an Eligible Security.

The Funds will limit investments to those which are Eligible Securities at the time of acquisition.

Liquidity. Under Rule 2a-7, a Fund must hold securities that are sufficiently liquid to meet reasonably foreseeable shareholder redemptions in light of the Fund’s obligations under section 22(e) of the 1940 Act (which forbids the suspension of the right of redemption, or postponement of the date of payment or satisfaction upon redemption for more than seven days after the tender of such security for redemption, subject to specified exemptions) and any commitments the Fund has made to shareholders. In addition, a Fund may not acquire an illiquid security if, immediately after the acquisition, the Fund would have invested more than 5% of its total assets in illiquid securities. A Fund, other than the Premier Tax-Exempt Portfolio, may not acquire any security other than a Daily Liquid Asset (cash, U.S. Government securities and other securities that will mature or are subject to a demand feature that is exercisable and payable within one business day) if, immediately after the acquisition the Fund would have invested less than 10% of its total assets in Daily Liquid Assets. The Fund may not acquire any security other than a Weekly Liquid Asset (cash, direct obligations of the U.S. Government, Government securities issued by a person controlled or supervised by and acting as an instrumentality of the U.S. Government pursuant to authority granted by the Congress, that are issued at a discount to the principal amount to be repaid at maturity and have a remaining maturity of 60 days or less and securities that will mature or are subject to a demand feature that is exercisable and payable within 5 business days) if, immediately after the acquisition, the Fund would have invested less than 30% of its total assets in Weekly Liquid Assets.

Maturity. Under Rule 2a-7, each Fund invests only in U.S. dollar-denominated securities maturing within 397 days of the date of purchase, with certain exceptions permitted by applicable regulations. The Fund maintains a dollar-weighted average portfolio maturity of no more than 60 days and a dollar-weighted average portfolio maturity as determined without exceptions regarding certain interest rate adjustments under Rule 2a-7 of no more than 120 days. The maturity of a security is determined in compliance with Rule 2a-7, which for purposes of the dollar-weighted average portfolio maturity permits, among other things, certain securities bearing adjustable interest rates to be deemed to have a maturity shorter than their stated maturity.

Foreign Investments

Foreign Government Obligations. Generally only Premier Portfolio and Premier Tax-Exempt Portfolio may invest in debt securities of foreign governments. Debt securities issued by foreign governments are often, but not always, supported by the full faith and credit of the foreign governments, or their subdivisions, agencies or instrumentalities, that issue them. These securities involve the risks discussed below under Foreign Debt Securities. Additionally, the issuer of the debt or the governmental authorities that control repayment of the debt may be unwilling or unable to pay interest or repay principal

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when due. Political or economic changes or the balance of trade may affect a country’s willingness or ability to service its debt obligations. Periods of economic uncertainty may result in the volatility of market prices of sovereign debt obligations, especially debt obligations issued by the governments of developing countries. Foreign government obligations of developing countries and some structures of emerging market debt securities are sometimes referred to as “Brady Bonds”. The failure of a sovereign debtor to implement economic reforms, achieve specified levels of economic performance, or repay principal or interest when due may result in the cancellation of third party commitments to lend funds to the sovereign debtor, which may impair the debtor’s ability or willingness to service its debts.

Foreign Debt Securities. Generally only Premier Portfolio and Premier Tax-Exempt Portfolio may invest in foreign debt securities. Foreign debt securities are debt securities that are issued and/or settled outside the United States and may be backed by foreign guarantees. A Fund will limit its investments in foreign debt securities to debt obligations denominated in U.S. dollars. Debt securities issued by a corporation or other issuer domiciled outside the United States that are dollar denominated and traded in the United States are not considered foreign securities. Although denominated in U.S. dollars, Foreign Debt Securities may entail some or all of the risks set forth below.

Political and Economic Risk. The economies of many of the countries in which the Funds may invest may not be as developed as the United States’ economy and may be subject to significantly different forces. Political or social instability and development, expropriation or confiscatory taxation, and limitations on the removal of funds or other assets could also adversely affect the value of the Funds’ investments.

Regulatory Risk. Foreign companies may not be registered with the Securities and Exchange Commission (SEC) and are generally not subject to the regulatory controls and disclosure requirements imposed on United States issuers. Foreign companies may not be subject to uniform accounting, auditing and financial reporting standards, corporate governance practices and requirements comparable to those applicable to domestic companies. As a result, there is generally less publicly available information about foreign securities than is available about domestic securities. Income from foreign securities owned by the Funds may be reduced by a withholding tax at the source, which tax would reduce dividend income payable to the Funds’ shareholders.

Market Risk. The securities markets in many of the countries in which the Funds invest will have substantially lower trading volume than the major United States markets. As a result, the securities of some foreign companies may be less liquid and experience more price volatility than comparable domestic securities. Increased custodian costs as well as administrative costs (such as the need to use foreign custodians) may be associated with the maintenance of assets in foreign jurisdictions. There is generally less government regulation and supervision of foreign stock exchanges, brokers and issuers which may make it difficult to enforce contractual obligations.

Debt Investments

U.S. Government Obligations. Each Fund may invest in U.S. Government obligations, which include obligations issued or guaranteed by the U.S. Government, its agencies and instrumentalities, including bills, notes and bonds issued by the U.S. Treasury, as well as “stripped” or “zero coupon” U.S. Treasury obligations.

U.S. Government Obligations may be, (i) supported by the full faith and credit of the U.S. Treasury, (ii) supported by the right of the issuer to borrow from the U.S. Treasury, (iii) supported by the discretionary authority of the U.S. Government to purchase the agency’s obligations, or (iv) supported only by the credit of the instrumentality. There is a risk that the U.S. Government may choose not to provide financial support to U.S. Government-sponsored agencies or instrumentalities if it is not legally obligated to do so. In that case, if the issuer were to default, a Fund holding securities of such issuer might not be able to recover its investment from the U.S. Government. For example, while the U.S.

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Government has recently provided financial support to Federal National Mortgage Association (FNMA) and Federal Home Loan Mortgage Corporation (FHLMC), no assurance can be given that the U.S. Government will always do so, since the U.S. Government is not so obligated by law. There also is no guarantee that the government would support Federal Home Loan Banks. Accordingly, securities of FNMA, FHLMC and Federal Home Loan Banks, and other agencies, may involve a risk of non-payment of principal and interest. Any downgrade of the credit rating of the securities issued by the U.S. government may result in a downgrade of securities issued by its agencies or instrumentalities, including government-sponsored entities.

Temporary Investments. Each Fund may experience situations where it is unable to invest money that it has received overnight such as when it receives cash inflows after the overnight repurchase markets have closed. The Funds are permitted to leave balances in their accounts with the Bank of New York Mellon (BNY Mellon), the custodian bank. To compensate the Funds for such activity, the Fund may receive compensation from BNY Mellon at an agreed upon rate.

Asset-Backed Securities. Generally only Premier Portfolio and Premier Tax-Exempt Portfolio may invest in asset-back securities. Asset-backed securities are interests in pooled mortgages, loans, receivables, or other assets. Payments of interest and repayment of principal may be largely dependent upon the cash flows generated by the assets backing the securities and, in certain cases, supported by letters of credit, surety bonds, or other credit enhancements. Asset-backed security values may also be affected by other factors including changes in interest rates, the availability of information concerning the pool and its structure, the creditworthiness of the servicing agent for the pool, the originator of the loans or receivables, or the entities providing the credit enhancement.

Bank Instruments. Generally only Premier Portfolio and Premier Tax-Exempt Portfolio may invest in bank instruments and invest in certificates of deposit (Eurodollar CDs) and time deposits (Eurodollar time deposits) of foreign branches of domestic banks. Bank instruments are unsecured interest bearing bank deposits. Bank instruments include, but are not limited to, certificates of deposits, time deposits, and banker’s acceptances from U.S. or foreign banks as well as Eurodollar CDs and Eurodollar time deposits of foreign branches of domestic banks. Some certificates of deposit are negotiable interest-bearing instruments with a specific maturity issued by banks and savings and loan institutions in exchange for the deposit of funds, and can typically be traded in the secondary market prior to maturity. Other certificates of deposit, like time deposits, are non-negotiable receipts issued by a bank in exchange for the deposit of funds which earn a specified rate of interest over a definite period of time; however, it cannot be traded in the secondary market. A bankers’ acceptance is a bill of exchange or time draft drawn on and accepted by a commercial bank.

An investment in Eurodollar CDs or Eurodollar time deposits may involve some of the same risks that are described for Foreign Debt Securities.

Synthetic Municipal Instruments. Generally only Premier Portfolio and Premier Tax-Exempt Portfolio may invest in synthetic municipal instruments, the value of and return on which are derived from underlying securities. The types of synthetic municipal instruments in which the Fund may invest include tender option bonds and variable rate trust certificates. Both types of instruments involve the deposit into a trust or custodial account of one or more long-term tax-exempt bonds or notes (Underlying Bonds), and the sale of certificates evidencing interests in the trust or custodial account to investors such as the Fund. The trustee or custodian receives the long-term fixed rate interest payments on the Underlying Bonds, and pays certificate holders short-term floating or variable interest rates which are reset periodically. A “tender option bond” provides a certificate holder with the conditional right to sell its certificate to the sponsor or some designated third party at specified intervals and receive the par value of the certificate plus accrued interest (a demand feature). A “variable rate trust certificate” evidences an interest in a trust entitling the certificate holder to receive variable rate interest based on prevailing short-term interest rates and also typically provides the certificate holder with the conditional demand feature (the right to tender its certificate at par value plus accrued interest under certain conditions).

Typically, a certificate holder cannot exercise the demand feature until the occurrence of certain conditions, such as where the issuer of the Underlying Bond defaults on interest payments. Moreover, because synthetic municipal instruments involve a trust or custodial account and a third party conditional

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demand feature, they involve complexities and potential risks that may not be present where a municipal security is owned directly.

The tax-exempt character of the interest paid to certificate holders is based on the assumption that the holders have an ownership interest in the Underlying Bonds; however, the IRS has not issued a ruling addressing this issue. In the event the IRS issues an adverse ruling or successfully litigates this issue, it is possible that the interest paid to the Fund on certain synthetic municipal instruments would be deemed to be taxable. The Fund relies on opinions of special tax counsel on this ownership question and opinions of bond counsel regarding the tax-exempt character of interest paid on the Underlying Bonds.

Municipal Securities. Generally, Premier Portfolio and Premier Tax-Exempt Portfolio may invest in Municipal Securities. “Municipal Securities” include debt obligations of states, territories or possessions of the United States and the District of Columbia and their political subdivisions, agencies and instrumentalities, issued to obtain funds for various public purposes, including the construction of a wide range of public facilities such as airports, bridges, highways, housing, hospitals, mass transportation, schools, streets and water and sewer works. Other public purposes for which Municipal Securities may be issued include the refunding of outstanding obligations, obtaining funds for general operating expenses and lending such funds to other public institutions and facilities.

The principal and interest payments for industrial development bonds or pollution control bonds are often the sole responsibility of the industrial user and therefore may not be backed by the taxing power of the issuing municipality. The interest paid on such bonds may be exempt from federal income tax, although current federal tax laws place substantial limitations on the purposes and size of such issues. Such obligations are considered to be Municipal Securities provided that the interest paid thereon, in the opinion of bond counsel, qualifies as exempt from federal income tax. However, interest on Municipal Securities may give rise to a federal alternative minimum tax (AMT) liability and may have other collateral federal income tax consequences. There is a risk that some or all of the interest received by the Fund from tax-exempt Municipal Securities might become taxable as a result of tax law changes or determinations of the Internal Revenue Service (IRS).

The two major classifications of Municipal Securities are bonds and notes. Bonds may be further classified as “general obligation” or “revenue” issues. General obligation bonds are secured by the issuer’s pledge of its full faith, credit and taxing power for the payment of principal and interest. Revenue bonds are payable from the revenues derived from a particular facility or class of facilities, and in some cases, from the proceeds of a special excise or other specific revenue source, but not from the general taxing power. Tax-exempt industrial development bonds are in most cases revenue bonds and do not generally carry the pledge of the credit of the issuing municipality. Notes are short-term instruments which usually mature in less than two years. Most notes are general obligations of the issuing municipalities or agencies and are sold in anticipation of a bond sale, collection of taxes or receipt of other revenues.

Municipal Securities also include the following securities:

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The Fund also may purchase participation interests or custodial receipts from financial institutions. These participation interests give the purchaser an undivided interest in one or more underlying Municipal Securities.

After purchase by the Fund, an issue of Municipal Securities may cease to be rated by Moody’s Investors Service, Inc. (Moody’s) or Standard and Poor’s Ratings Services (S&P), or another nationally recognized statistical rating organization (NRSRO), or the rating of such a security may be reduced below the minimum credit quality rating required for purchase by the Fund. Neither event would require the Fund to dispose of the security.

Since the Funds invests in Municipal Securities backed by insurance companies and other financial institutions, changes in the financial condition of these institutions could cause losses to the Fund and affect its share price.

The Funds may invest in Municipal Securities that are insured by financial insurance companies. Since a limited number of entities provide such insurance, the Fund may invest up to 25% of its assets in securities insured by the same insurance company.

The Funds may also invest in taxable municipal securities. Taxable municipal securities are debt securities issued by or on behalf of states and their political subdivisions, the District of Columbia, and possessions of the United States, the interest on which is not exempt from federal income tax.

The yields on Municipal Securities are dependent on a variety of factors, including general economic and monetary conditions, money market factors, conditions of the Municipal Securities market, size of a particular offering, and maturity and rating of the obligation. Because many Municipal Securities are issued to finance similar projects, especially those related to education, health care, transportation and various utilities, conditions in those sectors and the financial condition of an individual municipal issuer can affect the overall municipal market. The market values of the Municipal Securities held by the Fund will be affected by changes in the yields available on similar securities. If yields increase following the purchase of a Municipal Security, the market value of such Municipal Security will generally decrease. Conversely, if yields decrease, the market value of a Municipal Security will generally increase.

U.S. Corporate Debt Obligations. Generally, Premier Portfolio and Premier Tax-Exempt Portfolio may invest corporate debt obligations. Corporate debt obligations in which the Funds may invest are debt obligations issued or guaranteed by corporations that are denominated in U.S. dollars. Such investments may include, among others, commercial paper, bonds, notes, debentures, variable rate demand notes, master notes, funding agreements and other short-term corporate instruments. Commercial Paper consists of short-term promissory notes issued by corporations. Commercial paper may be traded in the secondary market after its issuance. Variable rate demand notes are securities with a variable interest rate which is readjusted on pre-established dates. Variable rate demand notes are subject to payment of principal and accrued interest (usually within seven days) on a Fund’s demand. Master notes are negotiated notes that permit the investment of fluctuating amounts of money at varying rates of interest pursuant to arrangements with issuers who meet the credit quality criteria of the Fund. The interest rate on a master note may fluctuate based upon changes in specified interest rates or be reset periodically according to a prescribed formula or may be a set rate. Although there is no secondary market in master notes, if such notes have a demand feature, the payee may demand payment of the principal amount of the note upon relatively short notice. Funding agreements are agreements between an insurance company and a Fund covering underlying demand notes. Although there is no secondary market in funding agreements, if the underlying notes have a demand feature, the payee may demand payment of the principal amount of the note upon relatively short notice. Master notes and funding agreements are generally illiquid and therefore subject to the Funds’ percentage limitation for investments in illiquid securities.

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Other Investments

Other Investment Companies. Unless otherwise indicated in this SAI or a Fund’s prospectus, each Fund may purchase shares of other investment companies. For each Fund, the 1940 Act imposes the following restrictions on investments in other investment companies: (i) a Fund may not purchase more than 3% of the total outstanding voting stock of another investment company; (ii) a Fund may not invest more than 5% of its total assets in securities issued by another investment company; and (iii) a Fund may not invest more than 10% of its total assets in securities issued by other investment companies. The 1940 Act and related rules provide certain exemptions from these restrictions. These restrictions do not apply to investments by the Funds in investment companies that are money market funds, including money market funds that have Invesco or an affiliate of Invesco as an investment adviser (the Affiliated Money Market Funds).

When a Fund purchases shares of another investment company, including an Affiliated Money Market Fund, the Fund will indirectly bear its proportionate share of the advisory fees and other operating expenses of such investment company and will be subject to the risks associated with the portfolio investments of the underlying investment company.

Variable or Floating Rate Instruments. Variable or floating rate instruments are securities that provide for a periodic adjustment in the interest rate paid on the obligation. The interest rates for securities with variable interest rates are readjusted on set dates (such as the last day of the month or calendar quarter) and the interest rates for securities with floating rates are reset whenever a specified interest rate change occurs. Variable or floating interest rates generally reduce changes in the market price of securities from their original purchase price because, upon readjustment, such rates approximate market rates. Accordingly, as market interest rates decrease or increase, the potential for capital appreciation or depreciation is less for variable or floating rate securities than for fixed rate obligations. Many securities with variable or floating interest rates have a demand feature allowing the Fund to demand payment of principal and accrued interest prior to its maturity. The terms of such demand instruments require payment of principal and accrued interest by the issuer, a guarantor, and/or a liquidity provider. All variable or floating rate instruments will meet the applicable rating standards of the Funds. The Fund’s Adviser, or Sub-adviser, as applicable, may determine that an unrated floating rate or variable rate demand obligation meets the Fund’s rating standards by reason of being backed by a letter of credit or guarantee issued by a bank that meets those rating standards.

For Rule 2a-7 purposes, a variable rate security, the principal amount of which is scheduled to be paid in more than 397 calendar days, that is subject to a demand feature, shall be deemed to have a maturity equal to the longer of the period remaining until the next readjustment of the interest rate or the period remaining until the principal amount can be recovered through demand. A floating rate security, the principal amount of which, in accordance with the terms of the security, must unconditionally be paid in 397 calendar days or less shall be deemed to have a maturity of one day.

Investment Techniques

Forward Commitments, When-Issued and Delayed-Delivery Securities. Each Fund may purchase or sell securities on a forward commitment, when-issued or delayed-delivery basis.

Forward commitments, when-issued or delayed-delivery basis means that delivery and payment take place in the future after the date of the commitment to purchase or sell the securities at a pre-determined price and/or yield. Settlement of such transactions normally occurs a month or more after the purchase or sale commitment is made. Typically, not interest accrues to the purchaser until the security is delivered. Although a Fund generally intends to acquire or dispose of securities on a forward commitment, when-issued or delayed-delivery basis, a Fund may sell these securities or its commitment before the settlement date if deemed advisable.

When purchasing a security on a forward commitment, when-issued or delayed-delivery basis, a Fund assumes the rights and risks of ownership of the security, including the risk of price and yield

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fluctuation, and takes such fluctuations into account when determining its net asset value. Securities purchased on a forward commitment, when-issued or delayed-delivery basis are subject to changes in value based upon the public’s perception of the creditworthiness of the issuer and changes, real or anticipated, in the level of interest rates. Accordingly, securities acquired on such a basis may expose a Fund to risks because they may experience such fluctuations prior to actual delivery. Purchasing securities on a forward commitment, when-issued or delayed-delivery basis may involve the additional risk that the yield available in the market when the delivery takes place actually may be higher than that obtained in the transaction itself.

Many forward commitments, when-issued and delayed delivery transactions, including TBAs, are also subject to the risk that a counterparty may become bankrupt or otherwise fail to perform its obligations due to financial difficulties, including making payments or fulfilling obligations to a Fund. A Fund may obtain no or only limited recovery in a bankruptcy or other organizational proceedings, and any recovery may be significantly delayed. With respect to forward settling TBA transactions involving U.S. Government agency mortgage-backed securities, the counterparty risk may be mitigated by the recently adopted requirement that counterparties exchange variation margin on a regular basis as the market value of the deliverable security fluctuates.

Investment in these types of securities may increase the possibility that the Fund will incur short-term gains subject to federal taxation or short-term losses if the Fund must engage in portfolio transactions in order to honor its commitment. Until the settlement date, a Fund will segregate liquid assets of a dollar value sufficient at all times to make payment for the forward commitment, when-issued or delayed-delivery transactions. Such segregated liquid assets will be marked-to-market daily, and the amount segregated will be increased if necessary to maintain adequate coverage of the delayed-delivery commitments. No additional forward, when-issued or delayed-delivery commitments will be made by a Fund if, as a result, more than 25% of the Fund’s total assets would become so committed. The delayed-delivery securities, which will not begin to accrue interest or dividends until the settlement date, will be recorded as an asset of a Fund and will be subject to the risk of market fluctuation. The purchase price of the delayed-delivery securities is a liability of a Fund until settlement. TBA transactions and transactions in other forward-settling mortgage-backed securities are effected pursuant to a collateral agreement with the seller. A Fund provides to the seller collateral consisting of cash or liquid securities in an amount as specified by the agreement upon initiation of the transaction. A Fund will make payments throughout the term of the transaction as collateral values fluctuate to maintain full collateralization for the term of the transaction. Collateral will be marked-to-market every business day. If the seller defaults on the transaction or declares bankruptcy or insolvency, a Fund might incur expenses in enforcing its rights, or the Fund might experience delay and costs in recovering collateral or may suffer a loss of principal and interest if the value of the collateral declines. In these situations, a Fund will be subject to greater risk that the value of the collateral will decline before it is recovered or, in some circumstances, the Fund may not be able to recover the collateral, and the Fund will experience a loss.

Interfund Loans. The SEC has issued an exemptive order permitting the Invesco Funds to borrow money from and lend money to each other for temporary or emergency purposes. The Invesco Funds’ interfund lending program is subject to a number of conditions, including the requirements that: (i) an interfund loan will generally only occur if the interest rate on the loan is more favorable to the borrowing fund than the interest rate typically available from a bank for a comparable transaction and the rate is more favorable to the lending fund than the rate available on overnight repurchase transactions; (ii) an Invesco Fund may not lend more than 15% of its net assets through the program (measured at the time of the last loan); and (iii) an Invesco Fund may not lend more than 5% of its net assets to another Invesco Fund through the program (measured at the time of the loan). A Fund may participate in the program only if and to the extent that such participation is consistent with the Fund’s investment objective and investment policies. Interfund loans have a maximum duration of seven days. Loans may be called with one day’s notice and may be repaid on any day.

Borrowing. The Funds may borrow money to the extent permitted under the Fund Policies. Such borrowings may be utilized (i) for temporary or emergency purposes; (ii) in anticipation of or in response to adverse market conditions; or, (iii) for cash management purposes. All borrowings are

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limited to an amount not exceeding 33 1/3% of a Fund’s total assets (including the amount borrowed) less liabilities (other than borrowings). Any borrowings that exceed this amount will be reduced within three business days to the extent necessary to comply with the 33 1/3% limitation even if it is not advantageous to sell securities at that time.

If there are unusually heavy redemptions, a Fund may have to sell a portion of its investment portfolio at a time when it may not be advantageous to do so. Selling Fund securities under these circumstances may result in a lower net asset value per share or decreased dividend income, or both. Invesco and the Sub-Advisers believe that, in the event of abnormally heavy redemption requests, a Fund’s borrowing ability would help to mitigate any such effects and could make the forced sale of their portfolio securities less likely.

Repurchase Agreements. Each Fund may engage in repurchase agreement transactions. Repurchase agreements are agreements under which a Fund acquires ownership of a security from a broker-dealer or bank that agrees to repurchase the security at a mutually agreed upon time and yield. A Fund may enter into a “continuing contract” or “open” repurchase agreement under which the seller is under a continuing obligation to repurchase the underlying securities from the Fund on demand and the effective interest rate is negotiated on a daily basis.

In any repurchase transaction, collateral for a repurchase agreement may include cash items, obligations issued by the U.S. Government or its agencies or instrumentalities. Premier Portfolio may engage in repurchase agreements collateralized by fixed income securities that are rated investment grade and below investment grade by the requisite nationally recognized statistical rating organizations (NRSROs) or unrated securities of comparable quality, loan participations, and equities. For these types of repurchase agreement transactions, the Fund would look to the counterparty, and not the collateral, for determining diversification under Rule 2a-7. Thus, collateral for a repurchase agreement may include securities that a Fund could not hold directly.

Regardless of the collateral underlying the repurchase agreement, the Fund must determine that the repurchase agreement with the particular counterparty involves minimal credit risk and satisfies the credit quality standards in compliance with Rule 2a-7 under the 1940 Act. Collateral with lower credit quality or longer maturities may be subject to greater price fluctuations than collateral with higher credit quality or shorter maturities. If the repurchase agreement counterparty were to default, lower quality collateral may be more difficult to liquidate than higher quality collateral.

If the seller of a repurchase agreement fails to repurchase the security in accordance with the terms of the agreement, a Fund might incur expenses in enforcing its rights, and could experience a loss on the sale of the underlying security to the extent that the proceeds of the sale including accrued interest are less than the resale price provided in the agreement, including interest. In addition, although the Bankruptcy Code and other insolvency laws may provide certain protections for some types of repurchase agreements, if the seller of a repurchase agreement should be involved in bankruptcy or insolvency proceedings, a Fund may incur delay and costs in selling the underlying security or may suffer a loss of principal and interest if the value of the underlying security declines or the Fund may be deemed to be an unsecured creditor and be required to return the securities to the seller. Premier Portfolio may enter into repurchase agreements that involve securities that may be subject to a court-ordered or other “stay” in the event of the seller’s bankruptcy or insolvency. A “stay” will prevent a Fund from selling the securities it holds under a repurchase agreement until permitted by a court or other authority. In these situations a Fund may be subject to greater risk that the value of the securities may decline before they are sold, and that the Fund may experience a loss.

The securities underlying a repurchase agreement will be marked-to-market every business day so that the value of such securities is at least equal to the investment value of the repurchase agreement, including any accrued interest thereon. Custody of the securities will be maintained by the Fund’s custodian or subcustodian for the duration of the agreement.

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The Funds may invest their cash balances in joint accounts with other Invesco Funds for the purpose of investing in repurchase agreements with maturities not to exceed 60 days, and collateralized by cash or government securities (as defined by Rule 2a-7), and in certain other money market instruments with remaining maturities not to exceed 90 days.

Restricted and Illiquid Securities. Each Fund may invest up to 5% of its net assets in securities that are illiquid.

Illiquid securities are securities that cannot be disposed of within seven days in the normal course of business at approximately the price at which they are valued. Illiquid securities may include a wide variety of investments, such as: (1) repurchase agreements maturing in more than seven days (unless the agreements have demand/redemption features); (2) For funds other than money market funds, OTC options contracts and certain other derivatives (including certain swap agreements); (3) fixed time deposits that are not subject to prepayment or that provide for withdrawal penalties upon prepayment (other than overnight deposits); (4) loan interests and other direct debt instruments; (5) municipal lease obligations; (6) commercial paper issued pursuant to Section 4(2) of the Securities Act of 1933 (the 1933 Act); and (7) securities that are unregistered, that can be sold to qualified institutional buyers in accordance with Rule 144A under the 1933 Act, or that are exempt from registration under the 1933 Act or otherwise restricted under the federal securities laws. Generally, only Premier Portfolio and Premier Tax-Exempt Portfolio will invest in Rule 144A securities.

Limitations on the resale of restricted securities may have an adverse effect on their marketability, which may prevent a Fund from disposing of them promptly at reasonable prices. The Fund may have to bear the expenses of registering such securities for resale, and the risk of substantial delays in effecting such registrations. A Fund’s difficulty valuing and selling illiquid securities may result in a loss or be costly to the Fund.

If a substantial market develops for a restricted security or other illiquid investment held by a Fund, it may be treated as a liquid security, in accordance with procedures and guidelines approved by the Board. While Invesco monitors the liquidity of restricted securities on a daily basis, the Board oversees and retains ultimate responsibility for Invesco’s liquidity determinations. Invesco considers various factors when determining whether a security is liquid, including the frequency of trades, availability of quotations and number of dealers or qualified institutional buyers in the market.

Sale of Money Market Securities. The Funds do not seek profits through short-term trading and will generally hold portfolio securities to maturity. However, the Adviser and/or Sub-Adviser may seek to enhance the yield of the Fund by taking advantage of yield disparities that occur in the money markets. For example, market conditions frequently result in similar securities trading at different prices. Also, there frequently are differences in yields between various types of money market securities. The Adviser and/or Sub-Adviser may dispose of any portfolio security prior to its maturity if such disposition and reinvestment of proceeds are expected to enhance yield consistent with the Adviser’s and/or Sub-Adviser’s judgment as to desirable portfolio maturity structure. The Adviser and/or Sub-Adviser may also dispose of any portfolio security prior to maturity to meet redemption requests, and as a result of a revised credit evaluation of the issuer or other circumstances or considerations. This procedure may increase or decrease the Fund’s yield depending upon the Adviser’s and/or Sub-Adviser’s ability to correctly time and execute such transactions. The Fund’s policy of investing in securities with maturities of 397 days or less will result in high portfolio turnover. Since brokerage commissions are not normally paid on investments of the type made by the Fund, the high turnover should not adversely affect the Fund’s net income.

Receipt of Issuer’s Nonpublic Information

The Adviser or Sub-Advisers (through their portfolio managers, analysts, or other representatives) may receive material nonpublic information about an issuer that may restrict the ability of the Adviser or Sub-Advisers to cause the Funds to buy or sell securities of the issuer on behalf of the Funds for substantial periods of time. This may impact the Funds’ ability to realize profit or avoid loss with respect

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to the issuer and may adversely affect the Funds’ flexibility with respect to buying or selling securities, potentially impacting Fund performance. For example, activist investors of certain issuers in which the Adviser or Sub-Advisers hold large positions may contact representatives of the Adviser or Sub-Advisers and may disclose material nonpublic information in such communication. The Advisers or Sub-Advisers would be restricted from trading on the basis of such material nonpublic information, limiting their flexibility in managing the Funds and possibly impacting Fund performance.

Cybersecurity Risk

The Funds, like all companies, may be susceptible to operational and information security risks. Cyber security failures or breaches of the Funds or their service providers or the issuers of securities in which the Funds invest, have the ability to cause disruptions and impact business operations, potentially resulting in financial losses, the inability of Fund shareholders to transact business, violations of applicable privacy and other laws, regulatory fines, penalties, reputational damage, reimbursement or other compensation costs, and/or additional compliance costs. The Funds and their shareholders could be negatively impacted as a result.

Fund Policies for Premier Portfolio and Premier Tax-Exempt Portfolio

Fundamental Restrictions. Except as otherwise noted below, each Fund is subject to the following investment restrictions, which may be changed only by a vote of such Fund’s outstanding shares. Fundamental restrictions may be changed only by a vote of the lesser of (i) 67% or more of the Fund’s shares present at a meeting if the holders of more than 50% of the outstanding shares are present in person or represented by proxy, or (ii) more than 50% of the Fund’s outstanding shares. Any investment restriction that involves a maximum or minimum percentage of securities or assets (other than with respect to borrowing) shall not be considered to be violated unless an excess over or a deficiency under the percentage occurs immediately after, and is caused by, an acquisition or disposition of securities or utilization of assets by the Fund.

(1) The Fund is a “diversified company” as defined in the 1940 Act. The Fund will not purchase the securities of any issuer if, as a result, the Fund would fail to be a diversified company within the meaning of the 1940 Act, and the rules and regulations promulgated thereunder, as such statute, rules and regulations are amended from time to time or are interpreted from time to time by the SEC staff (collectively, the 1940 Act Laws and Interpretations) or except to the extent that the Fund may be permitted to do so by exemptive order or similar relief (collectively, with the 1940 Act Laws and Interpretations, the 1940 Act Laws, Interpretations and Exemptions). In complying with this restriction, however, the Fund may purchase securities of other investment companies to the extent permitted by the 1940 Act Laws, Interpretations and Exemptions.

(2) The Fund may not borrow money or issue senior securities, except as permitted by the 1940 Act Laws, Interpretations and Exemptions.

(3) The Fund may not underwrite the securities of other issuers. This restriction does not prevent the Fund from engaging in transactions involving the acquisition, disposition or resale of its portfolio securities, regardless of whether the Fund may be considered to be an underwriter under the 1933 Act.

(4) The Fund will not make investments that will result in the concentration (as that term may be defined or interpreted by the 1940 Act Laws, Interpretations and Exemptions) of its investments in the securities of issuers primarily engaged in the same industry. This restriction does not limit the Fund’s investments in (i) obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities, or (ii) tax-exempt obligations issued by governments or political subdivisions of governments, or (iii) bank instruments. In complying with this restriction, the Fund will not consider a bank-issued guaranty or financial guaranty insurance as a separate security.

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(5) The Fund may not purchase real estate or sell real estate unless acquired as a result of ownership of securities or other instruments. This restriction does not prevent the Fund from investing in issuers that invest, deal, or otherwise engage in transactions in real estate or interests therein, or investing in securities that are secured by real estate or interests therein.

(6) The Fund may not purchase physical commodities or sell physical commodities unless acquired as a result of ownership of securities or other instruments. This restriction does not prevent the Fund from engaging in transactions involving futures contracts and options thereon or investing in securities that are secured by physical commodities.

(7) The Fund may not make personal loans or loans of its assets to persons who control or are under common control with the Fund, except to the extent permitted by 1940 Act Laws, Interpretations and Exemptions. This restriction does not prevent the Fund from, among other things, purchasing debt obligations, entering into repurchase agreements, loaning its assets to broker-dealers or institutional investors, or investing in loans, including assignments and participation interests.

(8) The Fund may, notwithstanding any other fundamental investment policy or limitation, invest all of its assets in the securities of a single open-end management investment company with substantially the same fundamental investment objectives, policies and restrictions as the Fund.

In addition, it is a fundamental policy of Premier Tax-Exempt Portfolio that, under normal market conditions, it will have at least 80% of its net assets invested in municipal obligations that, based on the opinion of counsel to the issuer, pay interest free from federal income tax.

The investment restrictions set forth above provide each of the Funds with the ability to operate under new interpretations of the 1940 Act or pursuant to exemptive relief from the SEC without receiving prior shareholder approval of the change. Even though each of the Funds has this flexibility, the Board has adopted non-fundamental restrictions for each of the Funds relating to certain of these restrictions which Invesco and, when applicable, the Sub-Advisers must follow in managing the Funds. Any changes to these non-fundamental restrictions, which are set forth below, require the approval of the Board.

Non-Fundamental Restrictions. The following non-fundamental investment restrictions apply to each of the Funds. They may be changed for any Fund without approval of that Fund’s voting securities.

(1) In complying with the fundamental restriction regarding issuer diversification, the Fund will not, with respect to 75% of its total assets, purchase the securities of any issuer (other than securities issued or guaranteed by the U.S. Government or any of its agencies or instrumentalities and securities issued by other investment companies), if, as a result, (i) more than 5% of the Fund’s total assets would be invested in the securities of that issuer, or (ii) the Fund would hold more than 10% of the outstanding voting securities of that issuer. The Fund may purchase securities of other investment companies as permitted by the 1940 Act Laws, Interpretations and Exemptions.

(2) In complying with the fundamental restriction regarding borrowing money and issuing senior securities, the Fund may borrow money in an amount not exceeding 33 1/3% of its total assets (including the amount borrowed) less liabilities (other than borrowings). The Fund may borrow from banks, broker-dealers, or an Invesco Fund. The Fund may not borrow for leveraging, but may borrow for temporary or emergency purposes, in anticipation of or in response to adverse market conditions, or for cash management purposes. The Fund may not purchase additional securities when any borrowings from banks exceed 5% of the Fund’s total assets or when any borrowings from an Invesco Fund are outstanding.

(3) In complying with the fundamental restriction regarding industry concentration, the Fund may invest up to 25% of its total assets in the securities of issuers whose principal business activities are in the same industry and may invest over 25% of its assets in (i) obligations issued or guaranteed by the U.S. Government, its agencies or instrumentalities, (ii) tax-exempt obligations issued by governments or political subdivisions of governments, and (iii) bank instruments.

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(4) Notwithstanding the fundamental restriction with regard to engaging in transactions involving futures contracts and options thereon or investing in securities that are secured by physical commodities, the Fund currently may not invest in any security (including futures contracts or options thereon) that is secured by physical commodities.

(5) In complying with the fundamental restriction with regard to making loans, the Fund may lend up to 33 1/3% of its total assets and may lend money to an Invesco Fund, on such terms and conditions as the SEC may require in an exemptive order.

(6) Notwithstanding the fundamental restriction with regard to investing all assets in an open-end fund, the Fund may not invest all of its assets in the securities of a single open-end management investment company with the same fundamental investment objective, policies, and restrictions as the Fund.

(7) The Fund may not acquire any securities of registered unit investment trusts in reliance on Sections 12(d)(1) or 12(d)(1)(G) of the 1940 Act.

Fund Policies for Premier U.S. Government Money Portfolio

Fundamental Restrictions. The investment restrictions set forth below have been adopted by the Fund and, unless identified as non-fundamental policies, may not be changed without the affirmative vote of a majority of the outstanding voting securities of the Fund. As provided in the 1940 Act, a “vote of a majority of the outstanding voting securities of the Fund” means the affirmative vote of the lesser of (1) more than 50% of the outstanding shares of the Fund or (2) 67% or more the shares present at a meeting, if more than 50% of the outstanding shares are represented at the meeting in person or by proxy. Except with respect to borrowing, changes in values of the Fund’s assets will not cause a violation of the following investment restrictions as long as percentage restrictions are observed by the Fund at the time it purchases any security. The Fund shall not:

(1) Purchase the securities of any issuer (other than securities issued or guaranteed by the U.S. Government or any of its agencies or instrumentalities, municipal securities or securities issued or guaranteed by domestic banks, including U.S. branches for foreign banks and foreign branches of U.S. banks) if, as a result, more than 25% of the Fund’s total assets would be invested in the securities of companies whose principal business activities are in the same industry;

(2) Except to the extent permitted by Rule 2a-7 promulgated under the 1940 Act, or any successor rule thereto, purchase the securities of any issuer (other than securities issued or guaranteed by the U.S. Government or any of its agencies or instrumentalities, or securities of other investment companies) if, as a result, (i) more than 5% of the Fund’s total assets would be invested in the securities of that issuer, or (ii) the Fund would hold more than 10% of the outstanding voting securities of that issuer;

(3) Underwrite securities of other issuers, except insofar as it may be deemed to be an underwriter under the 1933 Act, in connection with the disposition of the fund’s portfolio securities;

(4) Borrow money, except that the Fund may borrow money in an amount not exceeding 33 1/3% of its total assets (including the amount borrowed) less liabilities (other than borrowings);

(5) Issue senior securities, except as permitted under the 1940 Act;

(6) Lend any security or make any loan if, as a result, more than 33 1/3% of its total assets would be lent to other parties, but this limitation does not apply to the purchase of debt securities or to repurchase agreements;

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(7) Purchase or sell physical commodities; however, this policy shall not prevent the Fund from purchasing and selling foreign currency, futures contracts, options, forward contracts, swaps, caps, floors, collars and other financial instruments;

(8) Purchase or sell real estate unless acquired as a result of ownership of securities or other instruments (but this shall not prevent the Fund from investing in securities or other instruments backed by real estate or securities of companies engaged in the real estate business); or

(9) The Fund may, notwithstanding any other fundamental investment policy or limitation, invest all of its assets in the securities of a single, open-end management investment company managed by the Adviser or an affiliate or a successor thereof, with substantially the same fundamental investment objective, policies, and limitations as the Fund.

The Fund’s investment objective is to seek a high level of current income, consistent with the preservation of capital and the maintenance of liquidity. The Fund’s investment objective is fundamental and may not be changed without shareholder approval.

Non-fundamental Restrictions. Non-fundamental restrictions may be changed for any Fund without shareholder approval. The non-fundamental investment restrictions listed below apply to each of the Funds unless otherwise indicated.

(1) In complying with the fundamental restriction regarding issuer diversification, the Fund will not, with respect to 75% of its total assets (and for Premier U.S. Government Money Portfolio, with respect to 100% of its total assets), purchase the securities of any issuer (other than securities issued or guaranteed by the U.S. Government or any of its agencies or instrumentalities and securities issued by other investment companies), if, as a result, (i) more than 5% of the Fund’s total assets would be invested in the securities of that issuer, except as permitted by Rule 2a-7 under the 1940 Act, or (ii) the Fund would hold more than 10% of the outstanding voting securities of that issuer. The Fund may purchase securities of other investment companies as permitted by the 1940 Act Laws, Interpretations and Exemptions.

In complying with the fundamental restriction of regarding issuer diversification, any Fund that invests in municipal securities will regard each state (including the District of Columbia and Puerto Rico), territory and possession of the United States, each political subdivision agency, instrumentality and authority thereof, and each multi-state agency of which a state is a member as a separate “issuer”. When the assets and revenues of an agency, authority, instrumentality or other political subdivision are separate from the government creating the subdivision and the security is backed only by assets and revenues of the subdivision, such subdivision would be deemed to be the sole issuer. Similarly, in the case of an Industrial Development Bond or Private Activity bond, if that bond is backed only by the assets and revenues of the non-governmental user, then that non-governmental user would be deemed to be the sole issuer.

(2) In complying with the fundamental restriction regarding industry concentration, the Fund may invest up to 25% of its total assets in the securities of issuers whose principal business activities are in the same industry.

(3) Notwithstanding the fundamental restriction regarding engaging in transactions involving futures contracts and options thereon or investing in securities that are secured by physical commodities, the Fund currently may not invest in any security (including futures contracts or options thereon) that is secured by physical commodities.

(4) Notwithstanding the fundamental restriction with regard to investing all assets in an open-end fund, the Fund may not invest all of its assets in the securities of a single open-end management investment company with the same fundamental investment objective, policies, and restrictions as the Fund.

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(5) The Fund may not acquire any securities of registered unit investment trusts in reliance of Section 12(d)(1)(F) or 12(d)(1)(G) of the 1940 Act.

(6) The following applies:

Premier U.S. Government Money Portfolio invest, under normal circumstances, at least 80% of its assets in (i) direct obligations of the U.S. Treasury, (ii) other securities issued or guaranteed as to principal and interest by the U.S. Government or its agencies and instrumentalities (agency securities) and (iii) repurchase agreements secured by those obligations referenced in (i) and (ii) above.

For purposes of the foregoing, “assets” means net assets plus the amount of any borrowings for investment purposes. The Fund will provide written notice to its shareholders prior to any change to this policy, as required by the 1940 Act, Laws, Interpretations and Exemptions.

Policies and Procedures for Disclosure of Fund Holdings.

The Board has adopted policies and procedures with respect to the disclosure of the Funds’ portfolio holdings (the Holdings Disclosure Policy). Invesco and the Board may amend the Holdings Disclosure Policy at any time without prior notice. Details of the Holdings Disclosure Policy and a description of the basis on which employees of Invesco and its affiliates may release information about portfolio securities in certain contexts are provided below.

Public release of portfolio holdings. The Funds make available to beneficial owners of Fund shares and prospective investors information regarding or derived from the Funds’ portfolio holdings. The Funds disclose the following portfolio holdings information on www.invesco.com ¹