AONE A123 Systems, Inc. (MM)

STATEMENT OF ADDITIONAL INFORMATION

JANUARY 27, 2012

as supplemented August 1, 2012 and November 1, 2012

THE OAKMARK FUNDS

No-Load Funds

Two North LaSalle Street
Chicago, Illinois 60602-3790
Telephone 1-800-OAKMARK (1-800-625-6275)
www.oakmark.com

This Statement of Additional Information relates to Oakmark Fund ("Oakmark Fund"), Oakmark Select Fund ("Select Fund"), Oakmark Equity and Income Fund ("Equity and Income Fund"), Oakmark Global Fund ("Global Fund"), Oakmark Global Select Fund ("Global Select Fund"), Oakmark International Fund ("International Fund") and Oakmark International Small Cap Fund ("International Small Cap Fund"), each a series of Harris Associates Investment Trust (the "Trust"). This Statement of Additional Information is not a prospectus but provides information that should be read in conjunction with the Funds' prospectus dated the same date as this Statement of Additional Information and any supplement thereto. You may obtain a prospectus or semi-annual or annual report from the Funds at no charge by writing, telephoning or accessing the Funds at their address, telephone number or website shown above. The financial statements of each Fund for the most recent fiscal year may be found in the Funds' annual report and are incorporated herein by reference.

Table of Contents

THE FUNDS

Oakmark Fund, Select Fund, Global Fund, Global Select Fund, International Fund and International Small Cap Fund seek long-term capital appreciation. Equity and Income Fund seeks income and preservation and growth of capital.

The Funds are series of the Trust, an open-end management investment company, and each Fund other than Select Fund and Global Select Fund is diversified. The Trust is a Massachusetts business trust organized under an Agreement and Declaration of Trust dated February 1, 1991 (the "Declaration of Trust").

Each Fund's shares are divided into two share classes: Class I Shares and Class II Shares. Class I Shares of a Fund are offered to members of the general public. As described more fully in the prospectus, Class II Shares of a Fund are offered to certain retirement and profit sharing plans. Class II Shares of a Fund pay a service fee at the annual rate of 0.25% of the average net assets of the Fund's Class II Shares. This service fee is paid to an administrator for performing the services associated with the administration of such retirement plans. The shares of each class of a Fund represent an interest in the same portfolio of investments of the Fund. All shares of a Fund have equal voting rights (except as to matters affecting the interests of only one class) and the shares of each class are entitled to participate pro rata in any dividends and other distributions declared by the Trust's board of trustees. All shares of a Fund of a given class have equal rights in the event of liquidation of that class. All shares issued will be fully paid and non-assessable and will have no preemptive or conversion rights.

INVESTMENT RESTRICTIONS

In pursuing their respective investment objectives, no Fund will:

1.   [This restriction does not apply to Select Fund and Global Select Fund] In regard to 75% of its assets, invest more than 5% of its assets (valued at the time of investment) in securities of any one issuer, except in U.S. government obligations;

2.  Acquire securities of any one issuer which at the time of investment (a) represent more than 10% of the voting securities of the issuer or (b) have a value greater than 10% of the value of the outstanding securities of the issuer;

3.  Invest more than 25% of its assets (valued at the time of investment) in securities of companies in any one industry, except that this restriction does not apply to investments in U.S. government obligations;

4.   [Funds other than Global Select Fund] Borrow money except from banks for temporary or emergency purposes in amounts not exceeding 10% of the value of the Fund's assets at the time of borrowing [the Fund will not purchase additional securities when its borrowings, less receivables from portfolio securities sold, exceed 5% of the value of the Fund's total assets]; [Global Select Fund only] Borrow money except for temporary or emergency purposes in amounts not exceeding 33-1/3% of the value of the Fund's assets at the time of borrowing, including the amount borrowed.

5.   [Funds other than Global Select Fund] Issue any senior security except in connection with permitted borrowings; [Global Select Fund only] Issue any senior security in contravention of the Investment Company Act of 1940;

6.  Underwrite the distribution of securities of other issuers; however the Fund may acquire "restricted" securities which, in the event of a resale, might be required to be registered under the Securities Act of 1933 on the ground that the Fund could be regarded as an underwriter as defined by that act with respect to such resale;

7.  Make loans, but this restriction shall not prevent the Fund from (a) investing in debt obligations, (b) investing in repurchase agreements, or (c) [Funds other than Oakmark Fund] lending its portfolio securities [the Fund will not lend securities having a value in excess of 33% of its assets, including collateral received for loaned securities (valued at the time of any loan)];

8.  Purchase and sell real estate or interests in real estate, although it may invest in marketable securities of enterprises which invest in real estate or interests in real estate;

9.   [Funds other than Global Select Fund] Purchase and sell commodities or commodity contracts, except that it may enter into forward foreign currency contracts; [Global Select Fund only] Purchase and sell physical commodities or commodity contracts;

10.  Acquire securities of other investment companies except (a) by purchase in the open market, where no commission or profit to a sponsor or dealer results from such purchase other than the customary broker's commission or (b) where the acquisition results from a dividend or a merger, consolidation or other reorganization; ⁽¹⁾

11.  Make margin purchases or participate in a joint or on a joint or several basis in any trading account in securities;

12.  Invest more than 15% of its net assets (valued at the time of investment) in illiquid securities, including repurchase agreements maturing in more than seven days;

13.   [Oakmark Fund and Select Fund only] Invest more than 25% of its total assets (valued at the time of investment) in securities of non-U.S. issuers (other than securities represented by American Depositary Receipts ("ADRs")); [Equity and Income Fund only] Invest more than 35% of its total assets (valued at the time of investment) in securities of non-U.S. issuers (other than securities represented by ADRs);

14.  Make short sales of securities unless (i) the Fund owns at least an equal amount of such securities, or of securities that are convertible or exchangeable, or anticipated to be convertible or exchangeable, into at least an equal amount of such securities with no restriction other than the payment of additional consideration or (ii) immediately after such a short sale, the aggregate value of all securities that the Fund is short (excluding short sales against-the-box ⁽²⁾ ) does not exceed 5% of the value of the Fund's net assets, and the Fund covers such a short sale as required by the current rules and positions of the Securities and Exchange Commission or its staff;

15.  Purchase a call option or a put option if, immediately thereafter, the aggregate market value of all call and put options then held would exceed 10% of its net assets;

16.  Write any call option or put option unless the option is covered and immediately thereafter the aggregate market value of all portfolio securities or currencies required to cover such options written by the Fund would not exceed 15% of its net assets;

17.  Invest in futures or options on futures, except that it may invest in forward foreign currency contracts [Global Select Fund may invest in stock futures and index futures] .

The first 10 restrictions listed above, except the bracketed portions and the footnotes related to the restrictions, are fundamental policies and may be changed only with the approval of the holders of a "majority of the outstanding voting securities" of the respective Fund, which is defined in the Investment Company Act of 1940 (the "1940 Act") as the lesser of (i) 67% of the shares of the Fund present at a meeting if more than 50% of the outstanding shares of the Fund are present in person or represented by proxy or (ii) more than 50% of the outstanding shares of the Fund. Those restrictions not designated as "fundamental," and a Fund's investment objective, may be changed by the board of trustees without shareholder approval. A Fund's investment objective will not be changed without at least 30 days' notice to shareholders.

Notwithstanding the foregoing investment restrictions, a Fund may purchase securities pursuant to the exercise of subscription rights, provided, in the case of each Fund other than Select Fund and Global Select Fund, that such purchase will not result in the Fund's ceasing to be a diversified investment company. Japanese and European corporations frequently issue additional capital stock by means of subscription rights offerings to existing shareholders at a price substantially below the market price of the shares. The failure to exercise such rights would result in a Fund's interest in the issuing company being diluted. The market for such rights is not well developed in all cases and, accordingly, a Fund may not always realize full value on the sale of rights. The exception applies in cases where the limits set forth in the investment restrictions would otherwise be exceeded by exercising rights or already would have been exceeded as a result of fluctuations in the market value of a Fund's portfolio securities with the result that the Fund would be forced either to sell securities at a time when it might not otherwise have done so, or to forego exercising the rights.

(1)  In addition to this investment restriction, the Investment Company Act of 1940 provides that a Fund may neither purchase more than 3% of the voting securities of any one investment company nor invest more than 10% of the Fund's assets (valued at the time of investment) in all investment company securities purchased by the Fund. Investment in the shares of another investment company would require the Fund to bear a portion of the management and advisory fees paid by that investment company, which might duplicate the fees paid by the Fund.

(2)  A short sale "against the box" involves the sale of a security with respect to which the Fund already owns or has the right to acquire an equivalent amount of such security in kind or amount, or securities that are convertible or exchangeable, or anticipated to be convertible or exchangeable, into at least an equal amount of such securities with no restriction other than the payment of additional consideration.

HOW THE FUNDS INVEST

Bottom-Up Investment Process

All portfolio managers at Harris Associates L.P., investment adviser to The Oakmark Funds (the "Adviser"), strive to abide by a consistent philosophy and process. This process involves a collective, unified effort at identifying what the managers believe are the best values in the marketplace.

Each manager typically constructs a focused portfolio from a list of approved stocks, built on a stock by stock basis from the bottom up. The following chart illustrates this bottom-up investment process:

Bottom-Up Investment Process

Universe of Thousands of Equity Securities
(All stocks available for investment.)

Criteria Screens
(Managers and research team screen for stocks that they believe are worth further
consideration.)

Quantitative and Qualitative Research
(Rigorous analysis is performed to ensure that the stock meets certain "value" standards.)

Approved List
(Approximately 120-160 securities.)

Invest
(Managers select stocks from the approved list for their specific funds.)

Small Cap Securities

The Funds may invest in "small cap companies." For those Funds other than International Small Cap Fund, a small cap company is one whose market capitalization is no larger than the largest market capitalization of the companies included in the S&P Small Cap 600 Index ($3.70 billion as of December 31, 2011). The mean market capitalization of companies included in the S&P Small Cap 600 Index was $809 million as of December 31, 2011. Over time, the largest market capitalization of the companies included in the S&P Small Cap 600 Index will change. As it does, the size of the companies in which each Fund invests may change.

For International Small Cap Fund, a small cap company is one whose market capitalization is less than $5 billion at the time of investment. Under normal market conditions, International Small Cap Fund invests at least 80% of its net assets (plus any borrowings for investment purposes) in stocks of small cap companies. International Small Cap Fund will notify shareholders at least 60 days prior to changing that policy.

Securities of Non-U.S. Issuers

International Fund and International Small Cap Fund invest primarily in securities of non-U.S. issuers. Global Fund typically invests between 25-75% of its total assets in securities of non-U.S. issuers. Global Select Fund typically invests at least 40% of its total assets in securities of non-U.S. issuers (unless the Adviser deems market and/or company valuations less favorable to non-U.S. issuers, in which case the Fund will invest at least 30% of its total assets in securities of non-U.S. issuers). Equity and Income Fund may invest up to 35% of its total assets in securities of non-U.S. issuers. Each of Oakmark Fund and Select Fund may invest up to 25% of its total assets in securities of non-U.S. issuers.

International investing permits an investor to take advantage of the growth in markets outside the U.S. The Funds may invest in securities of non-U.S. issuers directly or in the form of ADRs, European Depositary Receipts (EDRs), Global Depositary Receipts (GDRs), or other securities representing underlying shares of foreign issuers. Positions in these securities are not necessarily denominated in the same currency as the common stocks into which they may be converted. ADRs are receipts typically issued by an American bank or trust company and trading in U.S. markets evidencing ownership of the underlying securities. EDRs are European receipts evidencing a similar arrangement. Generally ADRs, in registered form, are designed for use in the U.S. securities markets and EDRs, in bearer form, are designed for use in European securities markets. GDRs are receipts that may trade in U.S. or non-U.S. markets. The Funds may invest in both "sponsored" and "unsponsored" ADRs, EDRs or GDRs. In a sponsored depositary receipt, the issuer typically pays some or all of the expenses of the depository and agrees to provide its regular shareholder communications

to depositary receipt holders. An unsponsored depositary receipt is created independently of the issuer of the underlying security. The depositary receipt holders generally pay the expenses of the depository and do not have an undertaking from the issuer of the underlying security to furnish shareholder communications.

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

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

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

Privatizations. Some governments have been engaged in programs of selling part or all of their stakes in government owned or controlled enterprises ("privatizations"). The Adviser believes that privatizations may offer opportunities for significant capital appreciation, and may invest assets of the Funds in privatizations in appropriate circumstances. In certain of those markets, the ability of foreign entities such as the Funds to participate in privatizations may be limited by local law, and/or the terms on which such Funds may be permitted to participate may be less advantageous than those afforded local investors. There can be no assurance that governments will continue to sell companies currently owned or controlled by them or that privatization programs will be successful.

Emerging Markets. Investments in emerging markets securities include special risks in addition to those generally associated with foreign investing. Many investments in emerging markets can be considered speculative, and the value of those investments can be more volatile than in more developed foreign markets. This difference reflects the greater uncertainties of investing in less established markets and economies. Emerging markets also have different clearance and settlement procedures, and in certain markets there have been times when settlements have not kept pace with the volume of securities transactions, making it difficult to conduct such transactions. Delays in settlement could result in temporary periods when a portion of the assets is uninvested and no return is earned thereon. The inability to make intended security purchases due to settlement problems could cause a Fund to miss attractive investment opportunities. Inability to dispose of portfolio securities due to settlement problems could result either in losses to a Fund due to subsequent declines in the value of those securities or, if a Fund has entered into a contract to sell a security, in possible liability to the purchaser. Costs associated with transactions in emerging markets securities are typically higher than costs associated with transactions in U.S. securities. Such transactions also involve additional costs for the purchase or sale of foreign currency.

Certain foreign markets (including emerging markets) may require governmental approval for the repatriation of investment income, capital or the proceeds of sales of securities by foreign investors. In addition, if a deterioration occurs in an emerging market's balance of payments or for other reasons, a country could impose temporary restrictions on foreign capital remittances. A Fund could be adversely affected by delays in, or a refusal to grant, required governmental approval for repatriation of capital, as well as by the application to the Fund of any restrictions on investments.

The risk also exists that an emergency situation may arise in one or more emerging markets. As a result, trading of securities may cease or may be substantially curtailed and prices for a Fund's securities in such markets may not be readily available. A Fund may suspend redemption of its shares for any period during which an emergency exists, as determined by the Securities and Exchange Commission (the "SEC"). Accordingly, if a Fund believes that appropriate circumstances exist, it will promptly apply to the SEC for a determination that such an emergency is present. During the period commencing from a Fund's identification of such condition until the date of the SEC action, that Fund's securities in the affected markets will be valued at fair value determined in good faith by or under the direction of the Trust's board of trustees.

Income from securities held by a Fund could be reduced by taxes withheld from that income, or other taxes that may be imposed by the emerging market countries in which the Fund invests. Net asset value of a Fund also may be affected by changes in the rates or methods of taxation applicable to the Fund or to entities in which the Fund has invested. Many emerging markets have experienced substantial rates of inflation for many years. Inflation and rapid fluctuations in inflation rates have had and may continue to have adverse effects on the economies and securities markets of certain emerging market countries. In an attempt to control inflation, certain emerging market countries have imposed wage and price controls. Of these countries, some, in recent years, have begun to control inflation through prudent economic policies.

Emerging market governmental issuers are among the largest debtors to commercial banks, foreign governments, international financial organizations and other financial institutions. Certain emerging market governmental issuers have not been able to make payments of interest or principal on debt obligations as those payments have come due. Obligations arising from past restructuring agreements may affect the economic performance and political and social stability of those issuers.

Governments of many emerging market countries have exercised and continue to exercise substantial influence over many aspects of the private sector through ownership or control of many companies. The future actions of those governments could have a significant effect on economic conditions in emerging markets, which in turn, may adversely affect companies in the private sector, general market conditions and prices and yields of certain of the securities in a Fund's portfolio. Expropriation, confiscatory taxation, nationalization, political, economic and social instability have occurred throughout the history of certain emerging market countries and could adversely affect Fund assets should any of those conditions recur.

Currency Exchange Transactions. Each Fund may enter into currency exchange transactions either on a spot ( i.e. , cash) basis at the spot rate for purchasing or selling currency prevailing in the foreign exchange market or through a forward currency exchange contract ("forward contract"). A forward contract is an agreement to purchase or sell a specified currency at a specified future date (or within a specified time period) and price set at the time of the contract. Forward contracts are usually entered into with banks, foreign exchange dealers or broker-dealers, are not exchange-traded and are usually for less than one year, but may be renewed. Forward currency transactions may involve currencies from the different countries that a Fund may invest in, or be exposed to, and are designed to serve as hedges against possible variations in the exchange rates between currencies.

The contractual amount of a forward contract does not necessarily represent the amount potentially subject to risk. Measuring risk associated with these instruments is only meaningful when all related and offsetting transactions are considered. Forward contracts are subject to many of the same risks as derivatives. Forward contracts are subject to counterparty risk, which is the risk that the counterparty to a contract would be unable or unwilling to meet the terms of its contract. The value of a forward contract fluctuates depending on the price movement of the currencies involved. The value of a foreign currency relative to the U.S. dollar varies continually, causing changes in the dollar value of a Fund's portfolio investments. The effect of changes in the dollar value of a foreign currency on the dollar value of the Fund's assets and on the net investment income available for distribution may be favorable or unfavorable. The use of such hedges may reduce or eliminate the potentially positive effect of currency revaluations on the Fund's total return.

A Fund may incur costs in connection with conversions between various currencies, and the Fund will be subject to increased illiquidity and counterparty risk because forward contracts are not traded on an exchange and often are not standardized. A Fund also may be required to liquidate portfolio assets, or may incur increased currency conversion costs, to compensate for a decline in the dollar value of a foreign currency. Although forward contracts may be used to protect a Fund from adverse currency movements, there is no guarantee that a Fund's hedging strategy will be successful.

A Fund's currency transactions are limited to transaction hedging and portfolio hedging involving either specific transactions or actual or anticipated portfolio positions. Transaction hedging is the purchase or sale of a forward contract with respect to specific receivables or payables of a Fund accruing in connection with the purchase or sale of portfolio securities. Portfolio hedging uses a forward contract on an actual or anticipated portfolio securities position that is denominated or quoted in a particular currency or exposed to foreign currency fluctuation. When a Fund owns or anticipates owning securities in countries whose currencies are linked, the Fund may aggregate such positions as to the currency hedged.

If a Fund enters into a forward contract hedging an anticipated or actual holding of portfolio securities, liquid assets of the Fund, having a value at least as great as the amount of the excess, if any, of the Fund's commitment under the forward contract over the value of the portfolio position being hedged, will be segregated on the books of the Fund and held by the Fund's custodian and marked to market daily, while the contract is outstanding.

At the maturity of a forward contract to deliver a particular currency, a Fund may sell the portfolio security related to such contract and make delivery of the currency received from the sale, or it may retain the security and either purchase the currency on the spot market or terminate its contractual obligation to deliver the currency by entering into an offsetting contract with the same currency trader for the purchase on the same maturity date of the same amount of the currency.

It is impossible to forecast precisely the market value of a portfolio security being hedged with a forward currency contract. Accordingly, at the maturity of a contract, it may be necessary for a Fund to purchase additional currency on the spot market (and bear the expense of such purchase) if the market value of the security is less than the amount of currency the Fund is obligated to deliver under the forward contract and if a decision is made to sell the security and make delivery of the currency. Conversely, it may be necessary to sell on the spot market some of the currency received upon the sale of the portfolio security if the sale proceeds exceed the amount of currency the Fund is obligated to deliver.

If the Fund retains the portfolio security and engages in an offsetting transaction, the Fund will incur a gain or a loss to the extent that there has been movement in forward contract prices. If the Fund engages in an offsetting transaction, it may subsequently enter into a new forward contract to sell the currency. Should forward prices decline during the period between the Fund's entering into a forward contract for the sale of a currency and the date it enters into an offsetting contract for the purchase of the currency, the Fund will realize a gain to the extent the price of the currency it has agreed to sell exceeds the price of the currency it has agreed to purchase. Should forward prices increase, the Fund will suffer a loss to the extent the price of the currency it has agreed to purchase exceeds the price of the currency it has agreed to sell. A default on the contract would deprive the Fund of unrealized profits or force the Fund to cover its commitments for purchase or sale of currency, if any, at the current market price.

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

Debt Securities

Each Fund may invest in debt securities, including lower-rated securities ( i.e. , securities rated BB or lower by Standard & Poor's Corporation Ratings Group, a division of the McGraw-Hill Companies ("S&P"), or Ba or lower by Moody's Investor Services, Inc. ("Moody's"), commonly called "junk bonds") and securities that are not rated. There may be a wide variation in the quality of bonds, both within a particular ratings classification and between classifications. An economic downturn could severely disrupt the market for such securities as well as adversely affect the value of such securities. and the ability of the issuers to repay principal and interest. There are no restrictions as to the ratings of debt securities acquired by a Fund or the portion of a Fund's assets that may be invested in debt securities in a particular ratings category, except that each of International Fund and International Small Cap Fund will not invest more than 10% of its respective total assets in securities rated below investment grade, Equity and Income Fund will not invest more

than 20% of its total assets in such securities, and each of the other Funds will not invest more than 25% of its total assets in such securities.

Securities rated BBB or Baa are considered to be medium grade and to have speculative characteristics. Lower-rated debt securities are predominantly speculative with respect to the issuer's capacity to pay interest and repay principal. Investment in medium- and lower-quality debt securities involves greater investment risk, including the possibility of issuer default or bankruptcy. In addition, lower-quality bonds are less sensitive to interest rate changes than higher-quality instruments and generally are more sensitive to real or perceived adverse economic changes or individual corporate developments. Negative economic developments may have a greater impact on the prices of lower-rated debt securities than on those of other higher rated debt securities. The market for lower-rated debt securities may react strongly to adverse news about an issuer of the economy, or to the perception or expectations of adverse news. During a period of adverse economic changes, including a period of rising interest rates, issuers of such bonds may experience difficulty in making their principal and interest payments.

Medium- and lower-quality debt securities may be less marketable than higher-quality debt securities because the market for them is less broad and may be more thinly traded, than that for higher-rated securities, which can affect the prices at which these securities can be sold. The market for unrated debt securities is even narrower. The market prices of these securities can change suddenly and unexpectedly. During periods of thin trading in these markets, the spread between bid and asked prices is likely to increase significantly, and a Fund may have greater difficulty selling its portfolio securities. See "Investing with The Oakmark Funds — Share Price" in the prospectus. The market value of those securities and their liquidity may be affected by adverse publicity and investor perceptions. Transaction costs with respect to lower-rated debt securities may be higher, and in some cases, information may be less available than is the case with investment grade securities.

A description of the characteristics of bonds in each ratings category is included in Appendix A to this statement of additional information.

When-Issued, Delayed-Delivery and Other Securities

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

At the time a Fund enters into a binding obligation to purchase securities on a when-issued basis, liquid assets of the Fund having a value at least as great as the purchase price of the securities to be purchased either will be maintained in a segregated account with the Fund's custodian or will be earmarked on the Fund's records (through appropriate notation on the books of the Fund or the Fund's custodian). The liquid assets of the Fund will be held in the segregated account or earmarked on the Fund's records throughout the period of the obligation. The use of these investment strategies, as well as any borrowing by a Fund, may increase net asset value fluctuation.

A Fund also may enter into a contract with a third party that provides for the sale of securities held by the Fund at a set price, with a contingent right for the Fund to receive additional proceeds from the purchaser upon the occurrence of designated future events, such as a tender offer for the securities of the subject company by the purchaser, and satisfaction of any applicable conditions. Under such an arrangement, the amount of contingent proceeds that the Fund will receive from the purchaser, if any, will generally not be determinable at the time such securities are sold. The Fund's rights under such an arrangement will not be secured and the Fund may not receive the contingent payment if the purchaser does not have the resources to make the payment. The Fund's rights under such an arrangement also may be illiquid and subject to the limitations on ownership of illiquid securities.

Government-Sponsored Entity Securities

Each Fund may invest in government-sponsored entity securities, which are securities issued or guaranteed by entities such as the Federal Home Loan Mortgage Corporation, the Federal National Mortgage Association

("Fannie Mae"), the Government National Mortgage Association ("Ginnie Mae"), the Federal Home Loan Mortgage Corporation ("Freddie Mac") and the Federal Home Loan Banks, among others.

There are different types of U.S. government securities with different levels of credit risk. Some U.S. government securities are issued or guaranteed by the U.S. Treasury and are supported by the full faith and credit of the United States, such as securities issued by the Export-Import Bank of the United States, Farm Credit System Financial Assistance Corporation, Farmers Home Administration, Federal Housing Administration, General Services Administration, Ginnie Mae, Maritime Administration or Small Business Administration. These securities have the lowest credit risk. Other types of securities issued or guaranteed by U.S. government agencies or instrumentalities are not backed by the full faith and credit of the U.S. For example, some securities are supported by the right of the agency or instrumentality to borrow from the U.S. Treasury, such as securities issued by the Federal Home Loan Banks, Freddie Mac, Fannie Mae, or Student Loan Marketing Association and other securities are supported only by the credit of the agency or instrumentality, such as securities issued by the Federal Farm Credit Banks Funding Corporation or Tennessee Valley Authority. As a result, you should be aware that although an issuer may be chartered or sponsored by Acts of Congress, an issuer may not be funded by congressional appropriations, and as such its securities are neither guaranteed nor insured by the U.S. Treasury.

A security backed by the U.S. Treasury or the full faith and credit of the United States is guaranteed only as to the timely payment of interest and principal when held to maturity. If the securities issued or guaranteed by a U.S. government agency or instrumentality are not backed by the full faith and credit of the U.S., there can be no assurance that the U.S. government will always provide financial support to the agency or instrumentality. In addition, because many types of U.S. government securities trade actively outside the U.S., their prices may rise and fall as changes in global economic conditions affect the demand for these securities. A Fund will invest in securities of agencies or instrumentalities only if the Adviser believes that the credit risk involved is acceptable.

It is possible that the securities discussed in this section could be adversely affected by the actions (or inactions) of the U.S. government.

Inflation-Indexed Securities

Each Fund may invest in inflation-indexed debt securities issued by governments, their agencies or instrumentalities or corporations. Inflation-indexed debt securities are fixed income securities whose principal value is periodically adjusted according to the rate of inflation. Two structures are common. The U.S. Treasury and some other issuers use a structure that accrues inflation into the principal value of the bond. Most other issuers pay out the Consumer Price Index ("CPI") accruals as part of a semiannual coupon.

Inflation-indexed securities issued by the U.S. Treasury have maturities of five, ten or thirty years, although it is possible that securities with other maturities will be issued in the future. The U.S. Treasury securities pay interest on a semiannual basis, equal to a fixed percentage of the inflation-adjusted principal amount. For example, if a Fund purchased an inflation-indexed security with a par value of $1,000 and a 3% real rate of return coupon (payable 1.5% semi-annually), and inflation over the first six months was 1%, the mid-year par value of the bond would be $1,010 and the first semi-annual interest payment would be $15.15 ($1,010 times 1.5%). If inflation during the second half of the year resulted in the whole years' inflation equaling 3%, the end-of-year par value of the bond would be $1,030 and the second semi-annual interest payment would be $15.45 ($1,030 times 1.5%).

If the periodic adjustment rate measuring inflation falls, the principal value of inflation-indexed security will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. Repayment of the original principal upon maturity (as adjusted for inflation) is guaranteed in the case of U.S. Treasury inflation-indexed securities, even during a period of deflation. However, the current market value of the securities is not guaranteed and will fluctuate. The Funds also may invest in other inflation related securities which may or may not provide a similar guarantee. If a guarantee of principal is not provided, the adjusted principal value of the security repaid at maturity may be less than the original principal.

Illiquid Securities

No Fund may invest in illiquid securities if, as a result, such securities would comprise more than 15% of the value of the Fund's net assets at the time of investment. If, through the appreciation of illiquid securities or the depreciation of liquid securities, the Fund should be in a position where more than 15% of the

value of its net assets are invested in illiquid assets, including restricted securities, the Fund will take appropriate steps to protect liquidity.

Illiquid securities may include restricted securities, which may be sold only in privately negotiated transactions or in a public offering with respect to which a registration statement is in effect under the Securities Act of 1933 (the "1933 Act"). Where a Fund holds restricted securities and registration is required, the Fund may be obligated to pay all or part of the registration expenses and a considerable period may elapse between the time of the decision to sell and the time the Fund may be permitted to sell a security under an effective registration statement. If, during such a period, adverse market conditions were to develop, the Fund might obtain a less favorable price than prevailed when it decided to sell. Restricted securities will be priced at fair value as determined in good faith by or under the direction of the board of trustees.

Notwithstanding the above, each Fund may purchase securities that, although privately placed, are eligible for purchase and sale under Rule 144A under the 1933 Act. That rule permits certain qualified institutional buyers, such as the Funds, to trade in privately placed securities even though such securities are not registered under the 1933 Act. The Adviser, under the supervision of the board of trustees, may consider whether securities purchased under Rule 144A are liquid and thus not subject to the Fund's restriction of investing no more than 15% of its assets in illiquid securities. (See restriction 12 under "Investment Restrictions.") A determination of whether a Rule 144A security is liquid or not is a question of fact. In making that determination, the Adviser will consider the trading markets for the specific security, taking into account the unregistered nature of a Rule 144A security. In addition, the Adviser may consider (1) the frequency of trades and quotes, (2) the number of dealers and potential purchasers, (3) dealer undertakings to make a market and (4) the nature of the security and of market place trades (e.g., the time needed to dispose of the security, the method of soliciting offers and the mechanics of transfer). The Adviser will monitor any 144A security that it has determined is liquid. If as a result of changed conditions, it is determined that a Rule 144A security is no longer liquid, the Fund's holdings of illiquid securities would be reviewed to determine what, if any, steps are required to assure that the Fund does not invest more than 15% of its net assets in illiquid securities. Investing in Rule 144A securities could have the effect of increasing the amount of a Fund's net assets invested in illiquid securities if qualified institutional buyers are unwilling to purchase such securities.

Private Placements

Each Fund may acquire securities in private placements. Because an active trading market may not exist for such securities, the sale of such securities may be subject to delay and additional costs. No Fund will purchase such a security if more than 15% of the value of such Fund's net assets would be invested in illiquid securities.

Short Sales

Each Fund may make short sales of securities if (a) the Fund owns at least an equal amount of such securities, or of securities that are convertible or exchangeable, or anticipated to be convertible or exchangeable, into at least an equal amount of such securities with no restriction other than the payment of additional consideration or (b) immediately after such a short sale, the aggregate value of all securities that the Fund is short (excluding the value of securities sold short against-the-box, as defined below) does not exceed 5% of the value of the Fund's net assets, and the Fund covers such short sales as described in the following paragraph.

A short sale against-the-box involves the sale of a security with respect to which the Fund already owns or has the right to acquire an equivalent security in kind and amount, or securities that are convertible or exchangeable, or anticipated to be convertible or exchangeable, into such securities with no restriction other than the payment of additional consideration.

In a short sale, a Fund does not deliver from its portfolio the securities sold and does not receive immediately the proceeds from the short sale. Instead, the Fund borrows the securities sold short from a broker-dealer through which the short sale is executed, and the broker-dealer delivers such securities, on behalf of the Fund, to the purchaser of such securities. Such broker-dealer is entitled to retain the proceeds from the short sale until the Fund delivers to such broker-dealer the securities sold short. In addition, the Fund is required to pay to the broker-dealer the amount of any dividends paid on shares sold short. Finally, in order to cover its short positions, the Fund must deposit and continuously maintain in a separate account with the Fund's custodian either (1) an equivalent amount of the securities sold short or securities convertible into or exchangeable for such securities without the payment of additional consideration or (2) cash, U.S. government securities or other liquid securities having a value equal to the excess of (a) the market value of

the securities sold short over (b) the value of any cash, U.S. government securities or other liquid securities deposited as collateral with the broker in connection with the short sale. A Fund is said to have a short position in the securities sold until it delivers to the broker-dealer the securities sold, at which time the Fund receives the proceeds of the sale. A Fund may close out a short position by purchasing on the open market and delivering to the broker-dealer an equal amount of the securities sold short, rather than by delivering portfolio securities.

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

Short sale transactions involve certain risks. If the price of the security sold short increases between the time of the short sale and the time a Fund replaces the borrowed security, the Fund will incur a loss and if the price declines during this period, the Fund will realize a short-term capital gain. Any realized short-term capital gain will be decreased, and any incurred loss increased, by the amount of transaction costs and any premium, dividend or interest that the Fund may have to pay in connection with such short sale. Certain provisions of the Internal Revenue Code of 1986, as amended (the "Code") may limit the degree to which a Fund is able to enter into short sales. There is no limitation on the amount of each Fund's assets that, in the aggregate, may be deposited as collateral for the obligation to replace securities borrowed to effect short sales and allocated to segregated accounts in connection with short sales.

Lending of Portfolio Securities

Each Fund, except Oakmark Fund, may lend its portfolio securities to broker-dealers and banks to the extent indicated in restriction 7 under "Investment Restrictions." Any such loan must be continuously secured by collateral in cash, cash equivalents or non-cash collateral in the form of U.S. Treasury or agency securities maintained on a current basis in an amount at least equal to the market value of the securities loaned by a Fund. The Fund would continue to receive the equivalent of the interest or dividends paid by the issuer on the securities loaned, and would also receive an additional return that may be in the form of a fixed fee or a percentage of the earnings on the collateral. The Fund would have the right to call the loan and attempt to obtain the securities loaned at any time on notice of not more than five business days. In the event of bankruptcy or other default of the borrower, the Fund could experience delays in liquidating the loan collateral or recovering the loaned securities and incur expenses related to enforcing its rights. There could also be a decline in the value of the collateral or in the value of the securities loaned while the Fund seeks to enforce its rights thereto and the Fund could experience subnormal levels of income and lack of access to income during this period. In addition, the Fund may not exercise proxy voting rights for a security that is on loan if it is unable to recall the security prior to the record date.

Foreign Investment Companies

Certain markets are closed in whole or in part to direct equity investments by foreigners. A Fund may be able to invest in such markets solely or primarily through foreign government-approved or authorized investment vehicles, which may include other investment companies. A Fund also may invest in other investment companies that invest in non-U.S. securities. As a shareholder in an investment company, a Fund would bear its ratable share of that investment company's expenses, including its advisory and administration fees. At the same time, the Fund would continue to pay its own management fees and other expenses. In addition, investing through such vehicles may be subject to limitation under the 1940 Act. Under the 1940 Act, a Fund may invest up to 10% of its assets in shares of investment companies and up to 5% of its assets in any one investment company, as long as the Fund does not own more than 3% of the voting stock of any one investment company. The Funds do not intend to invest in such vehicles or funds unless, in the judgment of the Adviser, the potential benefits of the investment justify the payment of any applicable fee, premium or sales charge.

Options

Each Fund may purchase and sell both call options and put options on securities. An option on a security is a contract that gives the purchaser (holder) of the option, in return for a premium, the right to buy from

(call) or sell to (put) the seller (writer) of the option the security underlying the option at a specified exercise price at any time during the term of the option. The writer of an option on an individual security has the obligation upon exercise of a call option to deliver the underlying security upon payment of the exercise price or upon exercise of a put option to pay the exercise price upon delivery of the underlying security.

A Fund will not write any call option or put option unless the option is covered and immediately thereafter the aggregate market value of all portfolio securities or currencies required to cover such options written by the Fund would not exceed 15% of its net assets. In the case of a call option, the option is covered if the Fund owns (a) the securities underlying the option, (b) other securities with respect to which the Fund anticipates receiving the underlying securities as a dividend or distribution or upon a conversion or exchange and liquid assets held by the Fund having a value at least equal to the value of such underlying securities held in a segregated account with the Fund's custodian or that are earmarked on the Fund's records (through appropriate notation on the books of the Fund or the Fund's custodian) or (c) an absolute and immediate right to acquire the underlying security without additional consideration (or, if additional consideration is required, liquid assets held by the Fund having a value at least equal to that amount held in a segregated account with the Fund's custodian or that are earmarked on the Fund's records (through appropriate notation on the books of the Fund or the Fund's custodian), upon conversion or exchange of other securities held in its portfolio. In the case of a put option, the option is covered if assets having a value at least equal to the exercise price of the option held in a segregated account with the Fund's custodian or that are earmarked on the Fund's records (through appropriate notation on the books of the Fund or the Fund's custodian), on a daily basis. For purposes of this restriction, the aggregate market value of all portfolio securities or currencies required to cover such options written by the Fund is the aggregate value of all securities held to cover call options written plus the value of all liquid assets required to be so segregated in connection with call and put options written.

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

Prior to the earlier of exercise or expiration, the writer may close out the option by an offsetting purchase or sale of an option of the same series (type, exchange, underlying security or index, exercise price and expiration). There can be no assurance, however, that a closing purchase or sale transaction can be effected when a Fund desires.

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

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

There are several risks associated with transactions in options. For example, there are significant differences between the securities markets and the options markets that could result in an imperfect correlation between these markets, causing a given transaction not to achieve its objectives. A decision as to whether, when, and how to use options involves the exercise of skill and judgment, and even a well-conceived transaction may be unsuccessful to some degree because of market behavior or unexpected events.

There can be no assurance that a liquid market will exist when a Fund seeks to close out an option position. If a Fund was unable to close out an option that it had purchased on a security, it would have to exercise the option in order to realize any profit or the option would expire and become worthless. If a Fund was unable to close out a covered call option that it had written on a security, it would not be able to sell the underlying security until the option expired. As the writer of a covered call option on a security, a Fund foregoes, during the option's life, the opportunity to profit from increases in the market value of the security covering the

call option above the sum of the premium and the exercise price of the call. If trading were suspended in an option purchased or written by a Fund, that Fund would not able to close out the option. If restrictions on exercise were imposed, the Fund might be unable to exercise an option it has purchased.

Preferred Stock

Preferred stock represents units of ownership of a company that frequently have dividends that are set at a specified rate. Preferred stock has preference over common stock in the payment of dividends and the liquidation of assets. Preferred stock has characteristics of both debt and equity. Preferred stock ordinarily does not carry voting rights. Most preferred stock is cumulative; if dividends are passed ( i.e. , not paid for any reason), they accumulate and must be paid before common stock dividends. Participating preferred stock also entitles its holders to share in profits above and beyond the declared dividend, along with common shareholders, as distinguished from nonparticipating preferred stock, which is limited to the stipulated dividend. Shareholders may suffer a loss of value if dividends are not paid. The market prices of preferred shares are also sensitive to changes in interest rates and in the issuer's creditworthiness. Accordingly, shareholders may experience a loss of value due to adverse interest rate movements or a decline in the issuer's credit rating. Investing in preferred stock is subject to many of the same risks as investing in common stock, as described in the Funds' prospectus under "Risk Factors — Common Stock Risk." Convertible preferred stock is exchangeable for a given number of shares of common stock and thus tends to be more volatile than nonconvertible preferred stock, which generally behaves more like a fixed income bond.

Repurchase Agreements

A repurchase agreement involves a sale of securities to a Fund with the concurrent agreement of the seller (bank, securities dealer or clearing house) to repurchase the securities at the same price plus an amount equal to an agreed-upon interest rate within a specified time. Repurchase agreements generally are subject to counterparty risk. If a counterparty defaults, a Fund could realize a loss on the sale of the underlying security to the extent that the proceeds of the sale and accrued interest are less than the resale price provided in the repurchase agreement including interest. In addition, if a seller becomes involved in bankruptcy or insolvency proceedings, a Fund may incur delays and costs in selling the underlying security, or may suffer a loss of principal and interest if, for example, a Fund is treated as an unsecured creditor and is required to return the underlying collateral to the seller or its assigns. No Fund may invest more than 15% of its net assets in repurchase agreements maturing in more than seven days and other illiquid securities.

Bank Loans

Equity and Income Fund may invest up to 5% of its total assets in bank loans, which include senior secured and unsecured floating rate loans made by banks and other financial institutions to corporate customers. Typically, these loans hold the most senior position in a borrower's capital structure, may be secured by the borrower's assets and have interest rates that reset frequently. These loans generally will not be rated investment-grade by the rating agencies. Economic downturns generally lead to higher non-payment and default rates, and a senior loan could lose a substantial part of its value prior to a default. However, as compared to junk bonds, senior floating rate loans are typically senior in the capital structure and are often secured by collateral of the borrower. The Fund's investments in loans are subject to credit risk, and even secured bank loans may not be adequately collateralized. The interest rates of bank loans reset frequently, and thus bank loans are subject to interest rate risk. Most bank loans, like most investment-grade bonds, are not traded on any national securities exchange. Bank loans generally have less liquidity than investment-grade bonds, and there may be less public information available about them. The Fund may participate in the primary syndicate for a loan or it also may purchase loans from other lenders (sometimes referred to as loan assignments). The Fund also may acquire a participation interest in another lender's portion of the senior loan.

In addition, pending investment of proceeds from new sales of Fund shares or to meet ordinary daily cash needs, each Fund temporarily may hold cash and may invest any portion of its assets in money market instruments.

Liquidity Programs

Each Fund may participate in one or more liquidity programs that are designed to provide an alternative liquidity source for mutual funds experiencing net redemptions of their shares. Under such a liquidity program, the program sponsor provides a participating Fund with a source of cash by purchasing Fund shares in an amount not exceeding the value of the net shares being redeemed by other shareholders and that are to settle the next business day. Following its purchase of Fund shares, the liquidity program sponsor generally will redeem those shares when the Fund experiences net sales or at the end of a maximum holding period set by the program sponsor or at other times in the program sponsor's discretion. A program sponsor periodically may redeem its entire share position in a Fund and request that such redemption be met in-kind (that is, through a distribution of securities from the Fund's portfolio) in accordance with the Fund's redemption in-kind policies. The Funds will pay the program sponsors fees for providing such liquidity. Liquidity program sponsors will not be subject to any redemption fee when redeeming shares they have purchased under a liquidity program. In accordance with federal securities laws, some liquidity program sponsors are prohibited from acquiring more than 3% of a Fund's outstanding voting securities. See also "Additional Tax Information."

The table below shows gross advisory fees paid by the Funds and any expense reimbursements by the Adviser to them for the last three fiscal years, which are described in the prospectus.

The Agreement for each Fund (except for Global Select Fund) was for an initial term through October 31, 2001. The Agreement for Global Select Fund was for an initial term through October 31, 2007. Each Agreement continues from year to year thereafter so long as such continuation is approved at least annually by (1) the board of trustees or the vote of a majority of the outstanding voting securities of the Fund, and (2) a majority of the trustees who are not interested persons of any party to the Agreement, cast in person at a meeting called for the purpose of voting on such approval. Each Agreement may be terminated at any time, without penalty, by either the Trust or the Adviser upon 60 days' written notice, and automatically terminates in the event of its assignment as defined in the 1940 Act.

The Adviser is a limited partnership managed by its general partner, Harris Associates, Inc. ("HAI"), whose directors are John T. Hailer, David G. Herro, Robert M. Levy, Janet L. Reali, Kristi L. Rowsell and Pierre Servant. Ms. Rowsell is the president of HAI. HAI is a wholly-owned subsidiary of Natixis Global Asset Management, L.P. ("Natixis US"), as is the Adviser. Natixis US is a limited partnership that owns investment management and distribution and service entities.

Natixis US is part of Natixis Global Asset Management, an international asset management group based in Paris, France, that is in turn owned by Natixis, a French investment banking and financial services firm. Natixis is principally owned by BPCE, France's second largest banking group. BPCE is owned by banks comprising two autonomous and complementary retail banking networks consisting of the Caisse d'Epargne regional savings banks and the Banque Populaire regional cooperative banks. The registered address of Natixis is 30, avenue Pierre Mendès France, 75013 Paris, France. The registered address of BPCE is 50, avenue Pierre Mendès France, 75013 Paris, France. The Adviser has contractually agreed, through January 31, 2013, to reimburse Class I Shares of each Fund to the extent that the annual ordinary operating expenses of that class exceed the following percentages of the average net assets of Class I Shares: 1.50% in the case of Oakmark Fund and Select Fund; 1.00% in the case of Equity and Income Fund; 1.75% in the case of Global Fund and Global Select Fund; and 2.00% in the case of International Fund and International Small Cap Fund. The Adviser has also contractually agreed to reimburse Class II Shares of each Fund to the extent that the annual ordinary operating expenses of that class exceed the following percentages of the average net assets of Class II Shares: Oakmark Fund and Select Fund, 1.75% (1.50% + 0.25%); Equity and Income Fund, 1.25% (1.00% + 0.25%); Global Fund and Global Select Fund, 2.00% (1.75% + 0.25%); and International Fund and International Small Cap Fund, 2.25% (2.00% + 0.25%).

The Adviser is entitled to recoup from any Fund class, in any fiscal year through the Funds' fiscal year ending September 30, 2016, amounts reimbursed to that Fund class, except to the extent that the Fund class already has paid such recoupment to the Adviser or such recoupment would cause the annual ordinary operating expenses of a Fund class for that fiscal year to exceed the applicable limit stated above.

Expenses allocable to each class of Fund shares are calculated daily. If a Fund is entitled to any reduction in fees or expenses, reimbursement is made monthly.

Litigation Involving the Adviser

In August 2004, a complaint entitled Jones, et al. v. Harris Associates L.P. was filed in the U.S. District Court for the Western District of Missouri against the Adviser alleging, among other things, that the Adviser breached its fiduciary duty by charging excessive management fees to Oakmark Fund, Equity and Income Fund, and Global Fund in violation of Section 36(b) of the 1940 Act. The case was subsequently transferred to the U.S. District Court for the Northern District of Illinois. On February 27, 2007, the Court granted summary judgment in favor of the Adviser. Plaintiffs filed an appeal with the Seventh Circuit Court of Appeals and on May 19, 2008, that Court affirmed the lower court's decision and, subsequently, denied Plaintiffs' petition for a rehearing en banc. Although the Seventh Circuit Court of Appeals affirmed the District

Court's decision, it articulated a different standard for judicial review than the standard applied by the District Court. The United States Supreme Court granted a writ of certiorari to review the judgment of the Seventh Circuit Court of Appeals and the arguments in the case were heard on November 2, 2009. The Supreme Court issued its ruling on March 30, 2010, in which it adopted the standard for judicial review applied by the District Court, vacated the Seventh Circuit Court of Appeals' decision and remanded the case back to that Court for further hearing. Plaintiffs seek unspecified damages and other relief, including a return by the Adviser of management fees paid by those Funds. The Adviser believes these allegations are without merit and continues to defend them vigorously.

PORTFOLIO MANAGERS

Portfolio Managers Compensation Structure

Each of the Funds' portfolio managers is compensated solely by the Adviser. Compensation for each of the portfolio managers is based on the Adviser's assessment of the individual's long-term contribution to the investment success of the firm and is structured as follows:

(1)  Base salary. The base salary is a fixed amount, and each portfolio manager receives the same base salary.

(2)  Participation in a discretionary bonus pool. A discretionary bonus pool for each of the Adviser's domestic and international investment groups is allocated among the senior level employees of the group and is paid annually.

(3)  Participation in a long-term compensation plan that provides current compensation to certain key employees of the Adviser and deferred compensation to both current and former key employees. The compensation plan consists of bonus units awarded to participants that vest and are paid out over a period of time.

The determination of the amount of each portfolio manager's participation in the discretionary bonus pool and the long-term compensation plan is based on a variety of qualitative and quantitative factors. The factor given the most significant weight is the subjective assessment of the individual's contribution to the overall investment results of the Adviser's domestic or international investment group, whether as a portfolio manager, a research analyst, or both.

The quantitative factors considered in evaluating the contribution of a portfolio manager include the performance of the portfolios managed by that individual relative to benchmarks, peers and other portfolio managers, as well as the assets under management in the Funds and other accounts managed by the portfolio manager. A portfolio manager's compensation is not based solely on an evaluation of the performance of the Funds or the amount of Fund assets. Performance is measured in a number of ways, including by Fund, by other accounts and by strategy, and is compared to one or more benchmarks, including: S&P 500, Russell Mid-Cap Value, Russell 1000 Value, Lipper Balanced, 60/40 S&P/Barclays Capital (60% S&P 500 and 40% Barclays Capital Bond Index), Morgan Stanley Capital World International ("MSCI") Index, MSCI World ex-U.S. Index, MSCI World ex-U.S. Small Cap Index and the Adviser's approved lists of stocks, depending on whether the portfolio manager manages accounts in a particular strategy for which a given benchmark would be applicable. Performance is measured over shorter- and longer-term periods, including one year, three years, five years, ten years, since a Fund's inception or since the portfolio manager has been managing the Fund, as applicable. Performance is measured on a pre-tax and after-tax basis to the extent such information is available.

If a portfolio manager also serves as a research analyst, then his compensation is also based on the contribution made to the Adviser in that role. The specific quantitative and qualitative factors considered in evaluating a research analyst's contributions include, among other things, new investment ideas, the performance of investment ideas covered by the analyst during the current year as well as over longer-term periods, the portfolio impact of the analyst's investment ideas, other contributions to the research process, and an assessment of the quality of analytical work. In addition, an individual's other contributions to the Adviser, such as a role in investment thought leadership and management of the firm, are taken into account in the overall compensation process.

•  With respect to auditors, the Adviser believes that the relationship between a public company and its auditors should be limited primarily to the audit engagement, and it usually will vote in favor of proposals to prohibit or limit fees paid to auditors for any services other than auditing and closely-related activities that do not raise any appearance of impaired independence.

•  With respect to equity based compensation plans, the Adviser believes that appropriately designed plans approved by a company's shareholders can be an effective way to align the interests of long-term shareholders and the interests of management, employees and directors. However, the Adviser will normally vote against plans that substantially dilute its clients' ownership interest in the company or provide participants with excessive awards. The Adviser usually also will vote in favor of proposals to require the expensing of options.

•  With respect to shareholder rights, the Adviser believes that all shareholders of a company should have an equal voice and that barriers that limit the ability of shareholders to effect corporate change and to realize the full value of their investment are not desirable. Therefore, the Adviser usually will vote against proposals for supermajority voting rights, against the adoption of poison pill plans, and against proposals for different classes of stock with different voting rights.

•  With respect to "social responsibility" issues, the Adviser believes that matters related to a company's day-to-day business operations are primarily the responsibility of management. The Adviser is focused on maximizing long-term shareholder value and usually will vote against shareholder proposals requesting that a company disclose or change certain business practices unless it believes the proposal would have a substantial positive economic impact on the company.

The Adviser may determine not to vote a Fund's proxy if it has concluded that the costs of or disadvantages resulting from voting outweigh the economic benefits of voting. For example, in some non-U.S. jurisdictions, the sale of securities voted may be prohibited for some period of time, usually between the record and meeting dates ("share blocking"), and the Adviser may determine that the loss of investment flexibility resulting from share blocking outweighs the benefit to be gained by voting.

Conflicts of Interest

The Proxy Committee, in consultation with the Adviser's legal and compliance departments, will monitor and resolve any potential conflicts of interest with respect to proxy voting. A conflict of interest might exist, for example, when an issuer who is soliciting proxy votes also has a client relationship with the Adviser, when a client of the Adviser is involved in a proxy contest (such as a corporate director), or when one of the Adviser's employees has a personal interest in a proxy matter. When a conflict of interest arises, in order to ensure that proxies are voted solely in the best interest of the Funds and their shareholders, the Adviser will vote in accordance with either its written guidelines or the recommendation of an independent voting service. If the Adviser believes that voting in accordance with the guidelines or the recommendation of the voting service would not be in the collective best interests of the Funds and their shareholders, the Executive Committee of the Trust's Board of Trustees will determine how shares should be voted.

How to Obtain the Oakmark Funds' Proxy Voting Record

No later than August 31 of each year, information regarding how the Adviser, on behalf of the Funds, voted proxies relating to the Funds' portfolio securities for the 12 months ended the preceding June 30 will be available through a link on the Funds' website at oakmark.com and on the SEC's website at sec.gov.

committee and committee on contracts and has authorized the creation of a pricing committee. Each committee, other than the pricing committee, is comprised solely of trustees who are not "interested persons" under the 1940 Act ("Independent Trustees"). The principal functions of those committees are described below. The board has determined that the board's leadership and committee structure is appropriate because it enables the board to effectively and efficiently fulfill its oversight responsibilities and it facilitates the exercise of the board's independent judgment in evaluating and managing the relationship between the Funds, on the one hand, and the Adviser and certain other principal service providers, on the other.

As discussed below, the governance committee makes recommendations to the board regarding board committees and committee assignments, the composition of the board, candidates for election as trustees and compensation of trustees who are not affiliated with the Adviser, and oversees the process for evaluating the functioning of the board. The governance committee has not established specific qualifications that it believes must be met by a candidate for election as trustee. In evaluating candidates, the governance committee considers, among other things, an individual's background, skills, and experience; whether the individual is an "interested person" as defined in the 1940 Act; and whether the individual would be deemed an "audit committee financial expert" within the meaning of applicable SEC rules. The governance committee also considers whether the individual's background, skills, and experience will complement, and add to the diversity of, the background, skills, and experience of other trustees and will contribute to the board's deliberations. There is no difference in the manner in which the governance committee evaluates a candidate based on whether the candidate is recommended by a shareholder. Candidates are expected to provide a mix of attributes, experience, perspective and skills necessary to effectively advance the interests of shareholders.

The experiences and professional backgrounds of each board member have contributed to the board's conclusion that such board member should serve as a trustee of the trust. Each trustee's outside professional experience and number of years of service on the board is outlined in the table of biographical information below. During the time each board member has served, he/she has become familiar with the Funds' financial, accounting, regulatory and investment matters and has contributed to the board's deliberations.

†  Unless otherwise noted, the business address of each officer and trustee listed in the tables is Two North LaSalle Street, Suite 500, Chicago, Illinois 60602-3790.

#  As used in this table, "HALP," "HAI" and "HASLP" refer to the Adviser, the general partner of the Adviser, and the Funds' distributor, respectively.

*  Ms. Rowsell is a trustee who is an "interested person" of the Trust as defined in the 1940 Act because she is an officer of the Adviser and a director of HAI.

The Adviser, on customary terms, manages investment accounts controlled by Messrs. Reich and Voss.

Risk Oversight. Investing in general and the operation of a mutual fund involve a variety of risks, such as investment risk, compliance risk, valuation risk and operational risk, among others. The board oversees risk as part of its oversight of the Funds. Risk oversight is addressed as part of various regular board and committee activities. The board, directly or through its committees, reviews reports from among others, the Adviser, the Trust's Chief Compliance Officer ("CCO"), the Trust's independent registered public accounting firm, independent counsel, and internal auditors of the Adviser or its affiliates, as appropriate, regarding risks faced by the Funds and the risk management programs of the Adviser and certain other service providers. The actual day-to-day risk management with respect to the Funds resides with the Adviser and other service providers to the Funds. Although the risk management policies of the Adviser and the service providers are designed to be effective, those policies and their implementation vary among service providers and over time, and there is no guarantee that they will be effective. Not all risks that may affect the Funds can be identified or processes and controls developed to eliminate or mitigate their occurrence or effects, and some risks are simply beyond any control of the Funds or the Adviser, its affiliates or other service providers.

Pursuant to Rule 38a-1 under the 1940 Act, the Trust's CCO is responsible for administering the Trust's compliance program, including monitoring and enforcing compliance by the Funds and their service providers with the federal securities laws. The CCO has an active role in daily Fund operations and maintains a working relationship with all relevant advisory, legal, compliance, operations and administration personnel for the Funds' service providers. On at least a quarterly basis, the CCO reports to the Independent Trustees on significant compliance program developments, including material compliance matters, and on an annual basis, the CCO provides the full Board with a written report that summarizes his review and assessment of the adequacy of the compliance programs of the Funds and their service providers. The CCO also periodically communicates with the board and audit committee chairpersons between scheduled meetings.

The committees of the board of trustees include the executive committee, audit committee, governance committee and committee on contracts. The following table identifies the members of those committees as of January 1, 2012, the function of each committee, and the number of meetings of each committee held during the fiscal year ended September 30, 2011.

*  Chair of the committee.

The following table shows the compensation paid by the Trust during the fiscal year ended September 30, 2011 to each trustee who is not affiliated with the Adviser:

*  Each Fund is a series of the Trust and the Trust constitutes the entire fund complex. Aggregate compensation includes compensation that was deferred pursuant to the deferred compensation plan as described below. As of September 30, 2011, the total amounts accrued under the plan were $738,863 for Mr. Friduss, $735,863 for Mr. Hayden, $712,967 for Ms. Maki, $298,049 for Mr. Ruder and $806,653 for Dr. Wilner.

The Trust has a deferred compensation plan (the "Plan") that permits any trustee who is not an "interested person" of the Trust to elect to defer receipt of all or a portion of his or her compensation as a trustee for two or more years. The deferred compensation of a participating trustee is credited to a book reserve account of the Trust when the compensation would otherwise have been paid to the trustee. The value of the trustee's deferral account at any time is equal to the value that the account would have had if contributions to the account had been invested and reinvested in shares of one or more of the Oakmark Funds or the FST Administration Shares of the Financial Square Federal Fund ("Oakmark Units") of the Goldman Sachs Trust, as designated by the trustee. At the time for commencing distributions from a trustee's deferral account, which is no later than when the trustee ceases to be a member of the board of trustees, the trustee may elect to receive distributions in a lump sum or over a period of five years. Each Fund's obligation to make distributions under the Plan is a general obligation of that Fund. No Fund will be liable for any other Fund's obligations to make distributions under the Plan.

The Trust pays all compensation of trustees other than those affiliated with the Adviser and all expenses incurred in connection with their services to the Trust. The Trust does not provide any pension or retirement benefits to its trustees.

The following table shows the value of shares of each Fund "beneficially" owned (within the meaning of that term as defined in rule 16a-1(a)(2) under the Securities Exchange Act of 1934 (the "1934 Act")) by each trustee (within dollar ranges) as of December 31, 2011.

At December 31, 2011, the trustees and officers as a group owned beneficially less than 1% of the outstanding Class II shares of each Fund and less than 1% of the outstanding Class I shares of each Fund other than: Oakmark Fund, as to which the trustees and officers owned 1.10%; Select Fund, as to which they owned 2.21%; Global Fund, as to which they owned 1.40%; Global Select Fund, as to which they owned 4.25%; and International Small Cap Fund, as to which they owned 2.39%.

PURCHASING AND REDEEMING SHARES

Purchases and redemptions are discussed in the Funds' prospectus under the headings "Investing with The Oakmark Funds," "How to Buy Class I Shares," "How to Sell Class I Shares" and "Shareholder Services."

or redeemed. Even on days on which both non-U.S. markets and the NYSE are open, several hours may have passed between the time when trading in a non-U.S. market closes and the NYSE closes and the Funds calculate their net asset values.

Computation of net asset value (and the sale and redemption of a Fund's shares) may be suspended or postponed during any period when (a) trading on the NYSE is restricted, as determined by the SEC, or that exchange is closed for other than customary weekend and holiday closings, (b) the SEC has by order permitted such suspension, or (c) an emergency, as determined by the SEC, exists making disposal of portfolio securities or valuation of the net assets of a Fund not reasonably practicable. A Fund may value a security at a fair value if it appears that the valuation of the security has been materially affected by events occurring after the close of the primary market or exchange on which the security is traded but before the time as of which the net asset value is calculated. The Trust has retained a third party service provider to assist in determining estimates of fair values for foreign securities. That service utilizes statistical data based on historical performance of securities, markets and other data in developing factors used to estimate a fair value. When fair value pricing is employed, the value of a portfolio security used by a Fund to calculate its NAV may differ from quoted or published prices for the same security. Estimates of fair value utilized by the Funds as described above may differ from the value realized on the sale of those securities and the differences may be material to the net asset value of the applicable Fund.

The Trust has adopted a policy regarding the correction of any error in the computation of NAV in accordance with guidance provided by the SEC. When an error is discovered, the difference between the originally computed (erroneous) NAV and the correct NAV is calculated. If the difference is equal to or less than one cent per share, the error is deemed immaterial and no action is taken. If the difference is greater than one cent per share, the following actions are taken:

Shares Purchased through Intermediaries

Class I Shares of any of the Funds may be purchased through certain financial service companies, such as broker-dealers, banks, retirement plan service providers and retirement plan sponsors, who are agents of the Funds for the limited purpose of receiving and transmitting instructions for the purchase or sale of fund shares ("Intermediaries"). Class II Shares of each Fund are offered only for purchase through certain retirement plans, such as 401(k), and profit sharing plans. To purchase Class II Shares, you must do so through an Intermediary.

An Intermediary accepts purchase and sale orders as an authorized agent of the Funds pursuant to a written agreement. Any purchase or sale is made at the net asset value next determined after receipt and acceptance of the order by the Intermediary. Federal securities laws require Intermediaries to segregate any orders received on a business day after the close of regular session trading on the NYSE and transmit those orders

separately for execution at the net asset value next determined after that business day. The Funds have no ability to verify compliance by the Intermediaries with that requirement.

Certain Intermediaries perform recordkeeping, administrative and/or shareholder servicing services for their customers that may otherwise be performed by the Funds' transfer agent. In some circumstances, the Funds and the Adviser will pay an Intermediary for providing those services. Each Fund pays a portion of the fees charged by an Intermediary for those services provided to the underlying beneficial owners of shares of the Fund. The Fund pays the lesser of (a) 75% of the fees and (b) the estimated fees that the Fund would pay its transfer agent with respect to those shares if the shares had been registered in the names of the beneficial owners on the books of the transfer agent. The Adviser pays the balance of the Intermediary's fees, which may include compensation for marketing or distribution services provided by the Intermediary. Generally, the fees payable by a Fund and the Adviser to an Intermediary are not expected to exceed 0.40% of the average annual value of assets held by the Intermediary (or 0.65% in the case of Class II shares, which includes a 0.25% fee attributable to servicing of retirement accounts). In addition, the Adviser and/or the Funds' distributor may make payments for various additional services or other expenses for the services listed above or for distribution-related services out of their profits or other available sources.

Although Fund share transactions may generally be done directly with the Funds at no charge, certain Intermediaries may charge a transaction-based or other fee for their services. Those charges are retained by such Intermediaries and are not shared with the Funds, the Adviser or the Funds' distributor. The Trust reserves the right to waive minimum investment requirements for purchases made through Intermediaries.

Redemption In-Kind

Each Fund has elected to be governed by Rule 18f-1 under the 1940 Act pursuant to which it is obligated to redeem shares solely in cash up to the lesser of $250,000 or 1% of the net asset value of a Fund during any 90-day period for any one shareholder. Redemptions in excess of those amounts will normally be paid in cash, but may be paid wholly or partly by a distribution in kind of securities. Brokerage costs may be incurred by a shareholder who receives securities and desires to convert them to cash.

Small Account Fee and Redemption Policy

Due to the relatively high cost of maintaining small accounts, each Fund reserves the right to assess an annual fee of $25 on any account or to redeem all the shares in any account, and send the proceeds to the registered owner of the account if the account value has been reduced below $1,000 as a result of redemptions. Prior to redeeming all of the shares in such account, a Fund or its agent will make a reasonable effort to notify the registered owner if the account falls below the minimum in order to give the owner 30 days to increase the account value to $1,000 or more. The agreement and declaration of trust also authorizes the Trust to redeem shares under certain other circumstances as may be specified by the board of trustees.

90-Day Redemption Fee

International Small Cap Fund imposes a short-term trading fee on redemptions of Fund shares held for 90 days or less to help offset two types of costs to the Fund caused by abusive trading: portfolio transaction and market impact costs associated with erratic redemption activity and administrative costs associated with processing redemptions. The fee is paid to the Fund and is 2% of the redemption value and is deducted from either the redemption proceeds or from the balance of the account. The "first-in, first-out" (FIFO) method is used to determine the holding period, which means that if you bought shares on different days, the shares purchased first will be redeemed first for purposes of determining whether the short-term trading fee applies. The redemption fee does not apply to certain types of accounts or types of transactions, as discussed in the Funds' prospectus under "90-Day Redemption Fee on Fund Shares."

Money Market Exchange Fund

The Adviser acts as a Service Organization for the Oakmark Units of the Goldman Sachs Trust. Oakmark Units may be purchased directly or by exchanging shares of a Fund. For its services, the Adviser may receive fees at a rate of 0.25% from the Financial Square Federal Fund based on the average annual net assets of the Oakmark Units held in the Financial Square Federal Fund.

Anti-Money Laundering Compliance

The Funds are required to comply with various anti-money laundering laws and regulations. Consequently, a Fund may be required to "freeze" the account of a shareholder if the shareholder appears to be involved in suspicious activity or if certain account information matches information on government lists of known

terrorists or other suspicious persons, or the Fund may be required to transfer the account or proceeds of the account to a government agency.

Identity Theft Prevention Program

In response to new Federal Trade Commission regulations related to the prevention of identity theft, the Funds adopted a "Red Flags" policy to monitor and take action with respect to patterns, practices, or specific activities that indicate the possible existence of identity theft, and the Funds conduct their operations in a manner that is consistent with industry practice in that regard. The Funds are required by law to obtain certain personal information from shareholders, which will be used to verify a shareholder's identity. When a shareholder opens an account, he or she will be asked for his, her or its name, residential address, date of birth (for individuals), taxpayer or other government identification number and other information that will allow them to be identified. The Funds also may request to review other identifying documents such as driver's license, passport or documents showing the existence of the business entity. If a shareholder does not provide the personal information requested on the account application, the Funds may not be able to open the account. Failure to provide the personal information requested on the account application also may result in a delay in the date of a shareholder's purchase or in the rejection of the application and the return of the shareholder's investment monies. After a shareholder's account has been opened, if the Funds are unable to verify the shareholder's identity, the Funds reserve the right to close the account or take such other steps as the Funds deem reasonable. Furthermore, Boston Financial Data Services ("BFDS"), the Funds' transfer agent, implements the Red Flags policy by monitoring for red flags in the opening of Fund accounts and activity with respect to existing accounts.

ADDITIONAL TAX INFORMATION

General

Each Fund intends to continue to qualify to be taxed as a regulated investment company under the Code so as to be relieved of federal income tax on its capital gains and net investment income currently distributed to its shareholders. At the time of your purchase, a Fund's net asset value may reflect undistributed income, capital gains or net unrealized appreciation of securities held by that Fund. A subsequent distribution to you of such amounts, although constituting a return of your investment, would be taxable either as dividends or capital gain distributions.

The Jobs and Growth Tax Relief Reconciliation Act of 2003 (the "Act") reduced the maximum tax rate on long-term capital gains of noncorporate investors from 20% to 15%. The Act also reduced to 15% the maximum tax rate on "qualified dividend income" received by noncorporate shareholders who satisfy certain holding period requirements. The amount of dividends that may be eligible for the reduced rate may not exceed the amount of aggregate qualifying dividends received by that Fund. To the extent a Fund distributes amounts of dividends, including capital gain dividends, that the Fund determines are eligible for the reduced rates, it will identify the relevant amounts in its annual tax information reports to its shareholders. Without further legislative change, the rate reductions enacted by the Act will lapse, and the previous rates will be reinstated, for taxable years beginning on or after January 1, 2013.

You will be advised annually as to the source of distributions for tax purposes. If you are not subject to tax on your income, you will not be required to pay tax on these amounts.

If you realize a loss on sale of Fund shares held for six months or less, your short-term loss is recharacterized as long-term to the extent of any long-term capital gain distributions you have received with respect to those shares.

A Fund may be required to withhold federal income tax ("backup withholding") from certain payments to you, generally redemption proceeds and payments of dividends and distributions. Backup withholding may be required if:

•  You fail to furnish your properly certified social security or other tax identification number;

•  You fail to certify that your tax identification number is correct or that you are not subject to backup withholding due to the underreporting of certain income;

•  You fail to certify that you are a U.S. Person (including a U.S. resident alien); or

•  The IRS informs the Fund that your tax identification number is incorrect.

As modified by the Act, the backup withholding percentage is 28% for amounts paid through 2012, when the percentage will increase to 31% unless amended by Congress.

Those certifications are contained in the application that you complete when you open your Fund account. Each Fund must promptly pay the IRS all amounts withheld. Therefore, it usually is not possible for the Funds to reimburse you for amounts withheld. You may, however, claim the amount withheld as a credit on your federal income tax return.

Liquidity Programs

Some aspects of the tax treatment of the liquidity programs in which the Funds may participate are uncertain because the IRS has published little or no direct guidance relating to such programs. As a result, certain or all transactions under the liquidity programs could have significant adverse tax consequences to a Fund and its shareholders, if the Fund's determination of the tax treatment is not upheld upon challenge by the IRS. See "How the Funds Invest-Liquidity Programs" for additional information about liquidity programs.

Investment in Non-U.S. Securities

Dividends received by a Fund from non-U.S. corporate issuers are not expected to be eligible for the dividends-received deduction for corporate shareholders. Capital gain distributions paid by the Funds are never eligible for this deduction.

Certain foreign currency gains and losses, including the portion of gain or loss on the sale of debt securities attributable to foreign exchange rate fluctuations, are taxable as ordinary income. If the net effect of these transactions is a gain, the dividend paid by any of these Funds will be increased; if the result is a loss, the income dividend paid by any of these Funds will be decreased.

Income received by a Fund from sources within various foreign countries will be subject to foreign income taxes withheld at the source. Under the Code, if more than 50% of the value of the Fund's total assets at the close of its taxable year comprise securities issued by foreign corporations, the Fund may file an election with the Internal Revenue Service to "pass through" to the Fund's shareholders the amount of foreign income taxes paid by the Fund. Pursuant to this election, shareholders will be required to: (i) include in gross income, even though not actually received, their respective pro rata share of foreign taxes paid by the Fund; (ii) treat their pro rata share of foreign taxes as paid by them; and (iii) either deduct their pro rata share of foreign taxes in computing their taxable income, or use it as a foreign tax credit against U.S. income taxes (but not both). No deduction for foreign taxes may be claimed by a shareholder who does not itemize deductions.

Eligible Funds intend to meet the requirements of the Code to "pass through" to their shareholders foreign income taxes paid, but there can be no assurance that they will be able to do so. Each shareholder will be notified after the close of each taxable year of a Fund, if the foreign taxes paid by the Fund will "pass through" for that year. Of course, shareholders who are not liable for federal income taxes, such as retirement plans qualified under Section 401 of the Code, will not be affected by any such "pass through" of foreign tax credits.

The discussion of taxation above is not intended to be a full discussion of income tax laws and their effect on shareholders. In addition, tax laws frequently change. You are encouraged to consult your own tax advisor. The foregoing information applies to U.S. shareholders. U.S. citizens residing in a foreign country should consult their tax advisors as to the tax consequences of ownership of Fund shares.

DISTRIBUTOR

Shares of the Funds are offered for sale by HASLP without any sales commissions, 12b-1 fees, or other charges to the Funds or their shareholders. HASLP is an affiliate of the Adviser. All distribution expenses relating to the Funds are paid by the Adviser, including the payment or reimbursement of any expenses incurred by HASLP. The Distribution Agreement will continue in effect from year to year provided such continuance is approved annually (i) by a majority of the trustees or by a majority of the outstanding voting securities of the Funds and (ii) by a majority of the trustees who are not parties to the Distribution Agreement or interested persons of any such party.

The Trust has agreed to pay all expenses in connection with registration of its shares with the SEC and any auditing and filing fees required in compliance with various state securities laws. The Adviser bears all sales and

promotional expenses, including the cost of prospectuses and other materials used for sales and promotional purposes by HASLP. HASLP offers the Funds' shares only on a best efforts basis. HASLP is located at Two North LaSalle Street, Chicago, Illinois 60602-3790.

PORTFOLIO HOLDINGS DISCLOSURE

The Adviser maintains portfolio holdings disclosure policies and procedures that govern the timing and circumstances of disclosure to shareholders and third parties of information regarding the portfolio investments held by a Fund. These portfolio holdings disclosure policies have been approved by the board of trustees. The board of trustees periodically reviews these policies and procedures to ensure they adequately protect shareholders. It is the policy of the Funds and their service providers to protect the confidentiality of portfolio holdings and to prevent the selective disclosure of non-public information about each Fund's portfolio holdings.

Rating and ranking organizations such as Lipper, Inc. and Morningstar, Inc. or consultants and/or other financial industry institutions may request a complete list of portfolio holdings in order to rank or rate a Fund or to assess the risks of the Fund's portfolio and to produce related performance attribution statistics. Similarly, an Intermediary may be provided with portfolio holdings in order to allow the Intermediary to prepare Fund information for shareholders on a timely basis. Each Fund also may disclose portfolio holdings to its third-party service providers or counterparties in connection with services being provided or transactions being entered into, such as, among other things, custodial, brokerage, research, analytics, securities lending, accounting and legal. The disclosure of portfolio holdings to such third parties generally will be subject to a requirement that those third parties maintain the confidentiality of such information and that the information be used only for a stated legitimate business purpose other than for trading. The Funds' Chief Compliance Officer and the President of the Funds, Principal Financial Officer of the Funds, General Counsel or Chief Compliance Officer of the Adviser are authorized to disclose each Fund's portfolio securities in accordance with the procedures. In addition, in the case of a redemption of Fund shares in-kind, certain portfolio holdings will be disclosed to the redeeming shareholders. Neither the Trust nor the Adviser may receive compensation or other consideration in connection with the disclosure of portfolio holdings.

Disclosure of each Fund's complete holdings is required to be made quarterly within 60 days after the end of each fiscal quarter in the annual and semi-annual reports to Fund shareholders and in the quarterly reports on Form N-Q in the first and third quarters. These reports are available, free of charge, on the EDGAR database on the SEC's website at sec.gov.

Additionally, each Fund posts on its website at www.oakmark.com a complete list of its portfolio holdings usually within 10 business days after fiscal quarter-end.

products and services under the safe harbor of Section 28(e) of the Securities Exchange Act of 1934. Eligible research products and services may include, among other things, research reports, discussions with research analysts and corporate executives, seminars or conferences, financial and economic publications that are not targeted to a wide audience, software that provides analysis of securities portfolios, market research, including pre-and post-trade analytics, and market data. Eligible brokerage products and services may include services and products that (i) are used to effect securities transactions; (ii) perform services incidental to securities transactions; or (iii) are required by an applicable SRO or SEC rule(s). The research and brokerage products or services provided to the Adviser by a particular broker may include both (a) products and services created by such broker and (b) products and services created by a third party. The provision of research and brokerage products and services is often referred to as "soft dollar arrangements." Such arrangements may cause a Fund to pay a commission for effecting a securities transaction in excess of the amount another broker would have charged for effecting that transaction, if the Adviser determines that an arrangement qualifies for the safe harbor provided by Section 28(e) of the 1934 Act.

The Adviser is the principal source of information and advice to the Funds, and the research and other services provided by brokers to the Adviser are considered to be in addition to the information and advice provided by the Adviser to the Funds. The board of trustees recognizes that it is important for the Adviser, in performing its responsibilities to the Funds, to continue to receive and evaluate the broad spectrum of economic and financial information that many brokers have customarily furnished in connection with brokerage transactions, and that in compensating brokers for their services, it is in the interest of the Funds to take into account the value of the information received for use in advising the Funds. In addition, it is understood by the board of trustees that other clients of the Adviser might also benefit from the research and other services obtained from brokers through whom a Fund effects securities transactions, and that not all such research and services may be used by the Adviser for the Funds.

If the Adviser receives an eligible research or brokerage product or service that it also utilizes for non-eligible research or brokerage purposes, the Adviser will make a good faith determination as to the cost of such "mixed-use item" between the eligible and non-eligible purposes and use soft dollars to pay for that portion of the cost relating to its eligible purpose.

The Adviser also may participate in client commission arrangements, commission sharing arrangements and step-out transactions to receive eligible research and brokerage products and services. In "client commission arrangements" or "commission sharing arrangements," the Adviser may effect transactions, subject to best execution, through a broker and request that the broker allocate a portion of the commission or commission credits to a segregated "research pool" maintained by the broker. The Adviser may then direct such broker to pay for various products and services that are eligible under the safe harbor of Section 28(e). Participating in client commission arrangements or commission sharing arrangements may enable the Adviser to (1) strengthen its key brokerage relationships; (2) consolidate payments for research and brokerage products and services; and (3) continue to receive a variety of high quality research and brokerage products and services while facilitating best execution in the trading process.

In a step-out transaction, the Adviser directs a trade to a broker with instructions that the broker execute the transaction, but "step-out" all or portion of the transaction or commission in favor of another broker that provides eligible research and brokerage products or services. The second broker may clear and/or settle the transaction and receive commissions for the stepped-in portion. The Adviser only enters into step-out transactions if it will not hinder best execution.

In addition to trading with client commission arrangement brokers as discussed above, the Adviser effects trades with full service and introducing brokers, Electronic Communication Networks, Alternative Trading Systems, and other execution services.

The reasonableness of brokerage commissions paid by the Funds in relation to transaction and research services received is evaluated by the staff of the Adviser on an ongoing basis. The general level of brokerage charges and other aspects of the Funds' portfolio transactions are reviewed periodically by the board of trustees.

The following table shows the aggregate brokerage commissions (excluding the gross underwriting spread on securities purchased in initial public offerings) paid by each Fund during the periods indicated. No Fund paid brokerage commissions to an affiliated broker-dealer during any of the periods indicated below.

Each Fund, except Equity and Income Fund and Global Fund, experienced material changes to the aggregate dollar amount of brokerage commissions paid during the most recent fiscal year compared to either or both of the prior two years. These changes resulted from various factors, including, among other things, significant net flows into or out of a Fund, changes to a Fund's portfolio turnover rate, and/or a general decline in commission rates for domestic and international trades.

During the year ended September 30, 2011, brokers that provided research products or services to the Adviser were paid the following commissions on portfolio transactions in connection with soft dollar arrangements: Oakmark Fund, $140,455; Select Fund, $42,440; Equity and Income Fund, $618,422; Global Fund, $246,344; Global Select Fund $52,814; International Fund $1,509,150; International Small Cap Fund, $269,854, and the aggregate dollar amounts involved in those transactions for those respective Funds were: $379,247,910, $100,694,588, $1,581,298,356, $307,537,108, $83,599,353, $1,771,736,959, $301,467,960.

Transactions of the Funds in the over-the-counter market are executed with primary market makers acting as principal except where it is believed that better prices and execution may be obtained otherwise.

When the Adviser believes it desirable, appropriate and feasible to purchase or sell the same security for a number of client accounts at the same time, the Adviser may aggregate its clients' orders ("Aggregated Orders"), including orders on behalf of the Funds, in a way that seeks to obtain more favorable executions, in terms of the price at which the security is purchased or sold, the costs of the execution of the orders, and the efficiency of the processing of the transactions. Each account that participates in an Aggregated Order will participate at the average share price.

The trade allocation process takes place on as timely a basis as possible, i.e. , as a client order is completed in full, or, in the case of a partially executed Aggregated Order, at the market's close when the average price can be calculated. The trader will aggregate trade orders of different portfolio managers if the trader believes the Aggregated Order would provide each client with an opportunity to achieve a more favorable execution.

In the case of an Aggregated Order that has not been completely filled, the Adviser uses an automated application that determines an average execution price and then allocates securities among the accounts participating in the order. Institutional accounts, including the Funds, are generally allocated in proportion to the size of the order placed for each account ( i.e. , pro rata).

Although the Adviser believes that the ability to aggregate orders for client accounts will in general benefit its clients as a whole over time, in any particular instance, such aggregation may result in a less favorable price or execution for a particular client than might have been obtained if the transaction had been effected on an unaggregated basis.

The Funds do not purchase securities with a view to rapid turnover. However, there are no limitations on the length of time that portfolio securities must be held. Portfolio turnover can occur for a number of reasons, including general conditions in the securities market, more favorable investment opportunities in other securities, or other factors relating to the desirability of holding or changing a portfolio investment. A high rate of portfolio turnover would result in increased transaction expense, which must be borne by the Fund. High portfolio turnover also results in the realization of capital gains or losses and, to the extent net

short-term capital gains are realized, any distributions resulting from such gains will be considered ordinary income for federal income tax purposes.

The portfolio turnover rate for Equity and Income Fund decreased significantly during the 2011 fiscal year compared to the prior year, although the portfolio turnover rate of the equity portion of the portfolio remained relatively stable. The decrease in total portfolio turnover resulted primarily from a significant decrease in turnover in the fixed income portion of the portfolio. This decrease was driven primarily by fewer opportunities for tax trading and less need for portfolio repositioning in light of the existing interest rate environment.

During the most recent fiscal year, Oakmark Fund, Oakmark Select Fund, Global Fund, Global Select Fund and International Fund acquired securities of their regular brokers or dealers as defined in Rule 10b-1 of the 1940 Act. As of September 30, 2011, those Funds held securities of such regular brokers or dealers having the following aggregate values: Oakmark Fund held $44,064,000 of Bank of America, $75,902,400 of JPMorgan Chase, $50,372,022 of Bank of New York Mellon Corporation and $57,566,400 of State Street Corporation; Oakmark Select Fund held $90,179,280 of JPMorgan Chase; Global Fund held $51,430,338 of Credit Suisse Group and $74,718,675 of Daiwa Securities Group; Global Select Fund held $21,138,264 of Credit Suisse Group and $23,495,922 of Diawa Securities Group; and International Fund held $292,723,100 of Credit Suisse Group.

DECLARATION OF TRUST

The Trust was organized as a Massachusetts business trust on February 1, 1991. The Declaration of Trust disclaims liability of the shareholders, trustees and officers of the Trust for acts or obligations of the Trust. The Declaration of Trust provides for indemnification out of the Trust's assets for all losses and expenses of any shareholder held personally liable for obligations of the Trust. Thus, although shareholders of a business trust may, under certain circumstances, be held personally liable under Massachusetts law for the obligations of the Trust, the risk of a shareholder incurring financial loss on account of shareholder liability is believed to be remote because it is limited to circumstances in which the disclaimer is inoperative and the Trust itself is unable to meet its obligations. The Trust and the Adviser believe that the risk to any one series of sustaining a loss on account of liabilities incurred by another series is remote.

CUSTODIAN AND TRANSFER AGENT

State Street Bank and Trust Company ("State Street"), 200 Clarendon Street, P.O. Box 9130, Boston, Massachusetts 02117-9130, is the custodian for the Trust and, as such, performs certain services for the Funds as directed by authorized persons of the Trust. For example, as custodian, State Street is responsible for holding all securities and cash of each Fund, receiving and paying for securities purchased, delivering against payment securities sold, receiving and collecting income from investments and making all payments covering expenses of the Funds. State Street also performs certain portfolio accounting and administrative services for the Funds, such as monitoring each Fund's compliance with its investment guidelines, testing each Fund's compliance with Subchapter M of the Code, calculating each Fund's periodic dividend rates and total returns, preparing certain tax forms, preparing financial information for presentation to the Adviser, the Trust's board of trustees and each Fund's shareholders and for filing with the SEC, and calculating each Fund's excise tax distributions. Each Fund pays the custodian a monthly fee for the provision of such services. The custodian does not exercise any supervisory function in such matters as the purchase and sale of portfolio securities, payment of dividends, or payment of expenses of a Fund. The Trust has authorized the custodian to deposit certain portfolio securities of each Fund in central depository systems as permitted under federal law. The Funds may invest in obligations of the custodian and may purchase or sell securities from or to the custodian.

BFDS, 2000 Crown Colony Dr, Quincy MA 02169, performs transfer agency services for the Funds. BFDS maintains shareholder accounts and prepares and mails shareholder account statements, processes shareholder transactions, mails shareholders reports, prepares and mails distribution payments, maintains records of Fund transactions and provides blue sky reporting services. The Trust pays BFDS for its services based on the number of open shareholder accounts.

INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

An independent registered public accounting firm for the Trust performs an annual audit of the Trust's financial statements. The Trust's board of trustees has engaged Deloitte & Touche LLP, located at 111 South Wacker Drive, Chicago, Illinois 60606, to be the Trust's independent registered public accounting firm.