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^{Prospectus     March 1, 2020}

Share class (Symbol): A (SASMX), C (SCSMX), FI (LMPSX), R (LMPOX), I (SBPYX), IS (LMOIX), 1 (LMPMX)

CLEARBRIDGE

SMALL CAP GROWTH FUND

Beginning in April 2021, as permitted by regulations adopted by the Securities and Exchange Commission, the fund intends to no longer mail paper copies of the fund’s shareholder reports, unless you specifically request paper copies of the reports from the fund or from your Service Agent or financial intermediary (such as a broker-dealer or bank). Instead, the reports will be made available on a website, and you will be notified by mail each time a report is posted and provided with a website link to access the report.

If you already elected to receive shareholder reports electronically (“e-delivery”), you will not be affected by this change and you need not take any action. If you have not already elected e-delivery, you may elect to receive shareholder reports and other communications from the fund electronically by contacting your Service Agent or, if you are a direct shareholder with the fund, by calling 1-877-721-1926.

You may elect to receive all future reports in paper free of charge. If you invest through a Service Agent, you can contact your Service Agent to request that you continue to receive paper copies of your shareholder reports. That election will apply to all Legg Mason funds held in your account at that Service Agent. If you are a direct shareholder with the fund, you can call the fund at 1-877-721-1926, or write to the fund by regular mail at Legg Mason Funds, P.O. Box 9699, Providence, RI 02940-9699 or by express, certified or registered mail to Legg Mason Funds, 4400 Computer Drive, Westborough, MA 01581 to let the fund know you wish to continue receiving paper copies of your shareholder reports. That election will apply to all Legg Mason Funds held in your account held directly with the fund complex.

The Securities and Exchange Commission has not approved or disapproved these securities or determined whether this Prospectus is accurate or complete. Any statement to the contrary is a crime.

Investment objective

The fund seeks long-term growth of capital.

Fees and expenses of the fund

The accompanying table describes the fees and expenses that you may pay if you buy and hold shares of the fund.

You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, at least $25,000 in funds distributed through Legg Mason Investor Services, LLC (“LMIS”), the fund’s distributor. More information about these and other discounts is available from your Service Agent, in the fund’s Prospectus on page 20 under the heading “Sales charges,” in the appendix titled “Appendix: Waivers and Discounts Available from Certain Service Agents” on page A-1 of the fund’s Prospectus and in the fund’s Statement of Additional Information (“SAI”) on page 123 under the heading “Sales Charge Waivers and Reductions for Class A and Class A2 Shares.” “Service Agents” include banks, brokers, dealers, insurance companies, investment advisers, financial consultants or advisers, mutual fund supermarkets and other financial intermediaries that have entered into an agreement with LMIS to sell shares of the fund.

Class 1 shares of the fund are not available for purchases or incoming exchanges.

If you purchase Class I shares or Class IS shares through a Service Agent acting solely as an agent on behalf of its customers, that Service Agent may charge you a commission. Such commissions, if any, are not charged by the fund and are not reflected in the fee table or expense example below.

Example

This example is intended to help you compare the cost of investing in the fund with the cost of investing in other mutual funds. The example assumes:

Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Portfolio turnover. The fund pays transaction costs, such as commissions, when it buys and sells securities (or “turns over” its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when shares are held in a taxable account. These costs, which are not reflected in annual fund operating expenses or in the example, affect the fund’s performance. During the most recent fiscal year, the fund’s portfolio turnover rate was 18% of the average value of its portfolio.

Principal investment strategies

Under normal circumstances, the fund invests at least 80% of its assets in equity securities of companies with small market capitalizations and related investments. For the purposes of this 80% policy, small capitalization companies are companies with market capitalization values not exceeding (i) $3 billion or (ii) the highest month-end market capitalization value of any stock in the Russell 2000 Index for the previous 12 months, whichever is greater. Securities of companies whose market capitalizations no longer meet this definition after purchase by the fund are still considered to be securities of small capitalization companies for purposes of the fund’s 80% investment policy. The Russell 2000 Index measures the performance of the 2,000 smallest companies in the Russell 3000 Index.

The portfolio managers use a growth-oriented investment style that emphasizes small U.S. companies.

Principal risks

Risk is inherent in all investing. The value of your investment in the fund, as well as the amount of return you receive on your investment, may fluctuate significantly. You may lose part or all of your investment in the fund or your investment may not perform as well as other similar investments. An investment in the fund is not insured or guaranteed by the Federal Deposit Insurance Corporation or by any bank or government agency. The following is a summary description of certain risks of investing in the fund.

Stock market and equity securities risk. The stock markets are volatile and the market prices of the fund’s equity securities may decline generally. Equity securities may have greater price volatility than other asset classes, such as fixed income securities, and may fluctuate in price based on actual or perceived changes in a company’s financial condition and overall market and economic conditions and perceptions. If the market prices of the equity securities owned by the fund fall, the value of your investment in the fund will decline.

Market events risk. The market values of securities or other assets will fluctuate, sometimes sharply and unpredictably, due to changes in general market conditions, overall economic trends or events, governmental actions or intervention, actions taken by the U.S. Federal Reserve or foreign central banks, market disruptions caused by trade disputes or other factors, political developments, investor sentiment and other factors that may or may not be related to the issuer of the security or other asset. Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading and tariff arrangements, terrorism, natural disasters and other circumstances in one country or region could have profound impacts on global economies or markets. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the fund’s investments may be negatively affected.

Small capitalization company risk. The fund will be exposed to additional risks as a result of its investments in the securities of small capitalization companies. Small capitalization companies may fall out of favor with investors; may have limited product lines, operating histories, markets or financial resources; or may be dependent upon a limited management group. The prices of securities of small capitalization companies generally are more volatile than those of large capitalization companies and are more likely to be adversely affected than large capitalization

companies by changes in earnings results and investor expectations or poor economic or market conditions, including those experienced during a recession. Securities of small capitalization companies may underperform large capitalization companies, may be harder to sell at times or at prices the portfolio managers believe appropriate and may have greater potential for losses.

Growth investing risk. The fund’s growth-oriented investment style may increase the risks of investing in the fund. Growth securities typically are very sensitive to market movements because their market prices tend to reflect future expectations. When it appears those expectations will not be met, the prices of growth securities typically fall. Growth securities may also be more volatile than other investments because they often do not pay dividends. Growth stocks as a group may be out of favor and underperform the overall equity market while the market concentrates on value stocks.

Issuer risk. The market price of a security can go up or down more than the market as a whole and can perform differently from the value of the market as a whole, due to factors specifically relating to the security’s issuer, such as disappointing earnings reports by the issuer, unsuccessful products or services, loss of major customers, changes in management, corporate actions, negative perception in the marketplace, major litigation against the issuer or changes in government regulations affecting the issuer or the competitive environment. The fund may experience a substantial or complete loss on an individual security.

Illiquidity risk. Some assets held by the fund may be impossible or difficult to sell, particularly during times of market turmoil. These illiquid assets may also be difficult to value. Markets may become illiquid when, for instance, there are few, if any, interested buyers or sellers or when dealers are unwilling or unable to make a market for certain securities. As a general matter, dealers recently have been less willing to make markets for fixed income securities. If the fund is forced to sell an illiquid asset to meet redemption requests or other cash needs, the fund may be forced to sell at a loss.

Foreign investments and emerging markets risk. The fund’s investments in securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk as compared to investments in U.S. securities or issuers with predominantly domestic exposure, such as less liquid, less transparent, less regulated and more volatile markets. The value of the fund’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable or unsuccessful government actions, reduction of government or central bank support, inadequate accounting standards, lack of information and political, economic, financial or social instability.

The risks of foreign investments are heightened when investing in issuers in emerging market countries. Emerging market countries tend to have economic, political and legal systems that are less developed and are less stable than those of more developed countries. Less developed markets are more likely to experience problems with the clearing and settling of trades and the holding of securities by banks, agents and depositories. They are often particularly sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility.

Portfolio management risk. The value of your investment may decrease if the subadviser’s judgment about the attractiveness or value of, or market trends affecting, a particular security, industry, sector or region, or about market movements, is incorrect or does not produce the desired results, or if there are imperfections, errors or limitations in the models, tools and data used by the subadviser. In addition, the fund’s investment strategies or policies may change from time to time. Those changes may not lead to the results intended by the subadviser and could have an adverse effect on the value or performance of the fund.

Valuation risk. The sales price the fund could receive for any particular portfolio investment may differ from the fund’s valuation of the investment, particularly for securities that trade in thin or volatile markets or that are valued using a fair value methodology. Investors who purchase or redeem fund shares on days when the fund is holding fair-valued securities may receive fewer or more shares or lower or higher redemption proceeds than they would have received if the fund had not fair-valued securities or had used a different valuation methodology. The fund’s ability to value its investments may be impacted by technological issues and/or errors by pricing services or other third party service providers. The valuation of the fund’s investments involves subjective judgment.

Industry or sector focus risk. Although the fund does not employ an industry or sector focus, the fund may be susceptible to an increased risk of loss, including losses due to events that adversely affect the fund’s investments more than the market as a whole, to the extent that the fund has greater exposure to the securities of a particular issuer or issuers within the same industry or sector.

Cybersecurity risk. Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain access to fund assets, fund or customer data (including private shareholder information), or proprietary information, cause the fund, the manager, the subadvisers and/or their service providers (including, but not limited to, fund accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality or prevent fund investors from purchasing, redeeming or exchanging shares or receiving distributions. The fund, the manager, and the subadvisers have limited ability to prevent or mitigate cybersecurity incidents affecting third party service providers, and such third party service providers may have limited indemnification obligations to the fund or the manager. Cybersecurity incidents may result in financial losses to the fund and its shareholders, and substantial costs may be incurred in order to prevent any future cybersecurity incidents. Issuers of securities in which the fund invests are also subject to cybersecurity risks, and the value of these securities could decline if the issuers experience cybersecurity incidents.

These and other risks are discussed in more detail in the Prospectus or in the Statement of Additional Information.

Performance

The accompanying bar chart and table provide some indication of the risks of investing in the fund. The bar chart shows changes in the fund’s performance from year to year for Class A shares. The table shows the average annual total returns of each class of the fund that has been in operation for at least one full calendar year and also compares the fund’s performance with the average annual total returns of an index or other benchmark. Performance for classes other than those shown may vary from the performance shown to the extent the expenses for those classes differ. The fund makes updated performance information, including its current net asset value, available at www.leggmason.com/mutualfunds (select fund and share class), or by calling the fund at 1-877-721-1926.

The fund’s past performance (before and after taxes) is not necessarily an indication of how the fund will perform in the future.

Sales charges are not reflected in the accompanying bar chart, and if those charges were included, returns would be less than those shown.

Best Quarter (03/31/2012): 18.19 Worst Quarter (09/30/2011): (20.97)

The after-tax returns are shown only for Class A shares, are calculated using the historical highest individual federal marginal income tax rates and do not reflect the impact of state and local taxes. Actual after-tax returns depend on an investor’s tax situation and may differ from those shown, and the after-tax returns shown are not relevant to investors who hold their fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns for classes other than Class A will vary from returns shown for Class A.

Management

Investment manager: Legg Mason Partners Fund Advisor, LLC (“LMPFA”)

Subadviser: ClearBridge Investments, LLC (“ClearBridge”)

Portfolio managers: Primary responsibility for the day-to-day management of the fund lies with the following portfolio managers.

Purchase and sale of fund shares

You may purchase, redeem or exchange shares of the fund each day the New York Stock Exchange is open, at the fund’s net asset value determined after receipt of your request in good order, subject to any applicable sales charge.

The fund’s initial and subsequent investment minimums generally are set forth in the accompanying table:

Your Service Agent may impose higher or lower investment minimums, or may impose no minimum investment requirement.

For more information about how to purchase, redeem or exchange shares, and to learn which classes of shares are available to you, you should contact your Service Agent, or, if you hold your shares or plan to purchase shares through the fund, you should contact the fund by phone at 1-877-721-1926, by regular mail at Legg Mason Funds, P.O. Box 9699, Providence, RI 02940-9699 or by express, certified or registered mail at Legg Mason Funds, 4400 Computer Drive, Westborough, MA 01581.

Tax information

The fund’s distributions are generally taxable as ordinary income or capital gains.

Payments to broker/dealers and other financial intermediaries

The fund’s related companies pay Service Agents for the sale of fund shares, shareholder services and other purposes. These payments create a conflict of interest by influencing your Service Agent or its employees or associated persons to recommend the fund over another investment. Ask your financial adviser or salesperson or visit your Service Agent’s or salesperson’s website for more information.

More on the fund’s investment strategies, investments and risks

Important information

The fund seeks long-term growth of capital.

The fund’s investment objective may be changed by the Board of Trustees (the “Board”) without shareholder approval and on notice to shareholders. There is no assurance that the fund will meet its investment objective.

Under normal circumstances, the fund invests at least 80% of its assets in equity securities of companies with small market capitalizations and related investments. The portfolio managers use a growth-oriented investment style that emphasizes small U.S. companies. The fund expects that, under normal market conditions, the equity securities in which it invests will typically be common stocks. For the purposes of this 80% policy, small capitalization companies are companies with market capitalization values not exceeding (i) $3 billion or (ii) the highest month-end market capitalization value of any stock in the Russell 2000 Index for the previous 12 months, whichever is greater. Securities of companies whose market capitalizations no longer meet this definition after purchase by the fund are still considered to be securities of small capitalization companies for purposes of the fund’s 80% investment policy. The Russell 2000 Index measures the performance of the 2,000 smallest companies in the Russell 3000 Index. As of December 31, 2019, the market capitalization of the largest company included in the Russell 2000 Index was $8.273 billion and the median market capitalization was $821 million. The fund may invest up to 20% of its net assets in equity securities of companies that are not considered to be small capitalization companies.

The fund may also invest up to 20% of its assets in non-convertible bonds, notes and debt.

The fund’s 80% investment policy may be changed by the Board without shareholder approval upon 60 days’ prior notice to shareholders.

The fund’s other investment strategies and policies may be changed from time to time without shareholder approval, unless specifically stated otherwise in this Prospectus or in the Statement of Additional Information (“SAI”).

Equity investments

Equity securities include exchange-traded and over-the-counter (“OTC”) common and preferred stocks, warrants and rights, securities convertible into equity securities and securities of other investment companies and of real estate investment trusts (“REITs”).

Fixed income securities

Fixed income securities represent obligations of corporations, governments and other entities to repay money borrowed. Fixed income securities are commonly referred to as “debt,” “debt obligations,” “bonds” or “notes.” The issuer of the fixed income security usually pays a fixed, variable or floating rate of interest, and repays the amount borrowed, usually at the maturity of the security. Some fixed income securities, however, do not pay current interest but are sold at a discount from their face values. Other fixed income securities may make periodic payments of interest and/or principal. Some fixed income securities are partially or fully secured by collateral supporting the payment of interest and principal.

Foreign investments

The fund may invest up to 20% of its net assets (at the time of investment) in foreign securities. The fund may invest directly in foreign issuers or invest in depositary receipts.

Derivatives

Derivatives are financial instruments whose value depends upon, or is derived from, the value of an asset, such as one or more underlying investments, indexes or currencies. The fund may engage in a variety of transactions using derivatives, such as options on securities, currencies or interest rate futures. Derivatives may be used by the fund for any of the following purposes:

Using derivatives, especially for non-hedging purposes, may involve greater risks to the fund than investing directly in securities, particularly as these instruments may be very complex and may not behave in the manner anticipated by the fund. Certain derivative transactions may have a leveraging effect on the fund.

Use of derivatives or similar instruments may have different tax consequences for the fund than an investment in the underlying security, and those differences may affect the amount, timing and character of income distributed to shareholders.

A derivative contract will obligate or entitle the fund to deliver or receive an asset or cash payment based on the change in value of one or more underlying investments, indexes or currencies. When the fund enters into derivatives transactions, it may be required to segregate assets or enter into offsetting positions, in accordance with applicable regulations. Such segregation is not a hedging technique and will not limit the fund’s exposure to loss. The fund will, therefore, have investment risk with respect to both the derivative itself and the assets that have been segregated to

offset the fund’s derivative exposure. If the segregated assets represent a large portion of the fund’s portfolio, this may impede portfolio management or the fund’s ability to meet redemption requests or other current obligations.

Short sales

A short sale is a transaction in which the fund sells securities it does not own in anticipation of a decline in the market price of the securities. The fund may hold no more than 25% of its net assets (taken at the then current market value) as required collateral for such sales at any one time.

Cash management

The fund may hold cash pending investment, may invest in money market instruments and may enter into repurchase agreements and reverse repurchase agreements (which have characteristics like borrowings) for cash management purposes. The fund may invest in money market funds, which may or may not be affiliated with the fund’s manager or the subadvisers. The amount of assets the fund may hold for cash management purposes will depend on market conditions and the need to meet expected redemption requests.

Defensive investing

The fund may depart from its principal investment strategies in response to adverse market, economic or political conditions by taking temporary defensive positions, including by investing in any type of money market instruments and short-term debt securities or holding cash without regard to any percentage limitations. Although the subadviser has the ability to take defensive positions, it may choose not to do so for a variety of reasons, even during volatile market conditions.

Other investments

The fund may also use other strategies and invest in other investments that are described, along with their risks, in the Statement of Additional Information (“SAI”). However, the fund might not use all of the strategies and techniques or invest in all of the types of investments described in this Prospectus or in the SAI.

Percentage and other limitations

The fund’s compliance with its investment limitations and requirements described in this Prospectus is usually determined at the time of investment. If such a percentage limitation is complied with at the time of an investment, any subsequent change resulting from a change in asset values or characteristics will not constitute a violation of that limitation.

Selection process

The portfolio managers use a growth-oriented investment style that emphasizes small U.S. companies believed to have one or more of the following:

In addition, the fund may invest in companies the portfolio managers believe to be emerging in new or existing markets.

The fund may invest in companies the portfolio managers believe to be undervalued relative to their peers. The fund may continue to hold securities of issuers that become medium capitalization or large capitalization issuers if, in the portfolio managers’ judgment, these securities remain good investments for the fund.

The portfolio managers generally use a “bottom-up” approach when selecting securities for the fund. This means that the portfolio managers look primarily at individual companies against the context of broader market forces.

The portfolio managers utilize the subadviser’s fundamental research analysts who, using their industry expertise, determine the material ESG (environmental, social and governance) factors facing both individual companies and industry sectors and engage with company management regarding the extent to which they promote best practices of such factors. ESG factors may include, but are not necessarily limited to, environmentally-friendly product initiatives, labor audits of overseas supply chains and strong corporate governance. The choice of ESG factors for any particular company reflects the specific industry.

More on risks of investing in the fund

Following is more information on the principal risks summarized above and additional risks of investing in the fund.

Stock market and equity securities risk. The stock markets are volatile and the market prices of the fund’s equity securities may decline generally. Equity securities may have greater price volatility than other asset classes, such as fixed income securities, and may fluctuate in price based on actual or perceived changes in a company’s financial condition and overall market and economic conditions and perceptions. If the market prices of the equity securities owned by the fund fall, the value of your investment in the fund will decline.

Small capitalization company risk. The fund will be exposed to additional risks as a result of its investments in the securities of small capitalization companies. Small capitalization companies may fall out of favor with investors; may have limited product lines, operating histories, markets or financial resources; or may be dependent upon a limited management group. The prices of securities of small capitalization companies generally are more volatile than those of large capitalization companies and are more likely to be adversely affected than large capitalization companies by changes in earnings results and investor expectations or poor economic or market conditions, including those experienced during a recession. Securities of small capitalization companies may underperform large capitalization companies, may be harder to sell at times or at prices the portfolio managers believe appropriate and may have greater potential for losses.

Growth investing risk. The fund’s growth-oriented investment style may increase the risks of investing in the fund. Growth securities typically are very sensitive to market movements because their market prices tend to reflect future expectations. When it appears those expectations will not be met, the prices of growth securities typically fall. Growth securities may also be more volatile than other investments because they often do not pay dividends. Growth stocks as a group may be out of favor and underperform the overall equity market while the market concentrates on value stocks.

Issuer risk. The market price of a security can go up or down more than the market as a whole and can perform differently from the value of the market as a whole, due to factors specifically relating to the security’s issuer, such as disappointing earnings reports by the issuer, unsuccessful products or services, loss of major customers, changes in management, corporate actions, negative perception in the marketplace, major litigation against the issuer or changes in government regulations affecting the issuer or the competitive environment. The fund may experience a substantial or complete loss on an individual security.

Illiquidity risk. Illiquidity risk exists when particular investments are impossible or difficult to sell. Although most of the fund’s investments must be liquid at the time of investment, investments may become illiquid after purchase by the fund, particularly during periods of market turmoil. Markets may become illiquid when, for instance, there are few, if any, interested buyers or sellers or when dealers are unwilling or unable to make a market for certain securities. As a general matter, dealers recently have been less willing to make markets for fixed income securities. When the fund holds illiquid investments, the portfolio may be harder to value, especially in changing markets, and if the fund is forced to sell these investments to meet redemption requests or for other cash needs, the fund may suffer a loss. The fund may experience heavy redemptions that could cause the fund to liquidate its assets at inopportune times or at a loss or depressed value, which could cause the value of your investment to decline. In addition, when there is illiquidity in the market for certain investments, the fund, due to limitations on illiquid investments, may be unable to achieve its desired level of exposure to a certain sector.

Foreign investments and emerging markets risk. The fund’s investments in securities of foreign issuers or issuers with significant exposure to foreign markets involve additional risk as compared to investments in U.S. securities or issuers with predominantly domestic exposure, such as less liquid, less regulated, less transparent and more volatile markets. The markets for some foreign securities are relatively new, and the rules and policies relating to these markets are not fully developed and may change. The value of the fund’s investments may decline because of factors affecting the particular issuer as well as foreign markets and issuers generally, such as unfavorable or unsuccessful government actions, tariffs and tax disputes, reduction of government or central bank support, inadequate accounting standards, lack of information and political, economic, financial or social instability. Foreign investments may also be adversely affected by U.S. government or international economic sanctions, which could eliminate the value of an investment.

The value of the fund’s foreign investments may also be affected by foreign tax laws, special U.S. tax considerations and restrictions on receiving the investment proceeds from a foreign country. Dividends or interest on, or proceeds from the sale or disposition of, foreign securities may be subject to non-U.S. withholding or other taxes.

It may be difficult for the fund to pursue claims against a foreign issuer or other parties in the courts of a foreign country. Some securities issued by non-U.S. governments or their subdivisions, agencies and instrumentalities may not be backed by the full faith and credit of such governments. Even where a security is backed by the full faith and credit of a government, it may be difficult for the fund to pursue its rights against the government. In the past, some non-U.S. governments have defaulted on principal and interest payments. In certain foreign markets, settlement and clearance procedures may result in delays in payment for or delivery of securities not typically associated with settlement and clearance of U.S. investments.

If the fund buys securities denominated in a foreign currency, receives income in foreign currencies, or holds foreign currencies from time to time, the value of the fund’s assets, as measured in U.S. dollars, can be affected unfavorably by changes in exchange rates relative to the U.S. dollar or other foreign currencies. Currency exchange rates can be volatile, and are affected by factors such as general economic conditions, the actions of the U.S. and foreign governments or central banks, the imposition of currency controls and speculation.

In certain foreign markets, settlement and clearance of trades may experience delays in payment for or delivery of securities not typically associated with settlement and clearance of U.S. investments. Settlement of trades in these markets can take longer than in other markets and the fund may not receive its proceeds from the sale of certain securities for an extended period (possibly several weeks or even longer) due to, among other factors, low trading volumes and volatile prices. The custody or holding of securities, cash and other assets by local banks, agents and depositories in securities markets outside the United States may entail additional risks. Governments or trade groups may compel local agents to hold securities in designated depositories that may not be subject to independent evaluation. Local agents are held only to the standards of care of their local markets, and thus may be subject to limited or no government oversight. In extreme cases, the fund’s securities may be misappropriated or the fund may be unable to sell its securities. In general, the less developed a country’s securities market is, the greater the likelihood of custody problems.

The risks of foreign investments are heightened when investing in issuers in emerging market countries. Emerging market countries tend to have economic, political and legal systems that are less developed and are less stable than those of more developed countries. They are often particularly sensitive to market movements because their market prices tend to reflect speculative expectations. Low trading volumes may result in a lack of liquidity and in extreme price volatility. Investors should be able to tolerate sudden, sometimes substantial, fluctuations in the value of investments in emerging markets. Emerging market countries may have policies that restrict investment by foreigners or that prevent foreign investors from withdrawing their money at will.

Foreign custody and settlement risk. Foreign custody risk refers to the risks inherent in the process of clearing and settling trades and to the holding of securities, cash and other assets by local banks, agents and depositories in securities markets outside the United States. Low trading volumes and volatile prices in less developed markets make trades harder to complete and settle, and governments or trade groups may compel local agents to hold securities in designated depositories that may not be subject to independent evaluation. Local agents are held only to the standards of care of their local markets, and thus may be subject to limited or no government oversight. In an extreme case, the fund’s securities may be misappropriated or the fund may be unable to sell its securities. In general, the less developed a country’s securities market is, the greater the likelihood of custody problems. Settlement of trades in these markets can take longer than in other markets and the fund may not receive its proceeds from the sale of certain securities for an extended period (possibly several weeks or even longer).

Foreign currency risk. The value of investments in securities denominated in foreign currencies increases or decreases as the rates of exchange between those currencies and the U.S. dollar change. Currency conversion costs and currency fluctuations could erase investment gains or add to investment losses. Currency exchange rates can be volatile, and are affected by factors such as general economic conditions, the actions of the U.S. and foreign governments or central banks, the imposition of currency controls and speculation. The fund may be unable or may choose not to hedge its foreign currency exposure.

Portfolio management risk. The value of your investment may decrease if the subadviser’s judgment about the attractiveness or value of, or market trends affecting, a particular security, industry, sector or region, or about market movements, is incorrect or does not produce the desired results, or if there are imperfections, errors or limitations in the models, tools and data used by the subadviser. In addition, the fund’s investment strategies or policies may change from time to time. Those changes may not lead to the results intended by the subadviser and could have an adverse effect on the value or performance of the fund.

Short sales risk. If the price of the security sold short increases between the time of the short sale and the time the fund replaces the borrowed security, the fund will realize a loss, which may be substantial. A fund that engages in a short sale or short position may lose more money than the actual cost of the short sale or short position and its potential losses may be unlimited if the fund does not own the security sold short or the reference instrument and it is unable to close out of the short sale or short position.

Derivatives risk. Derivatives involve special risks and costs and may result in losses to the fund, even when used for hedging purposes. Using derivatives can increase losses and reduce opportunities for gains when market prices, interest rates, currencies, or the derivatives themselves behave in a way not anticipated by the fund, especially in abnormal market conditions. Using derivatives also can have a leveraging effect which may increase investment losses and increase the fund’s volatility, which is the degree to which the fund’s share price may fluctuate within a short time period. Certain derivatives have the potential for unlimited loss, regardless of the size of the initial investment. The other parties to certain derivatives transactions present the same types of credit risk as issuers of fixed income securities.

The fund’s counterparty to a derivative transaction may not honor its obligations in respect to the transaction. In certain cases, the fund may be hindered or delayed in exercising remedies against or closing out derivative instruments with a counterparty, which may result in additional losses.

Derivatives also tend to involve greater illiquidity risk and they may be difficult to value. The fund may be unable to terminate or sell its derivative positions. In fact, many over-the-counter derivatives will not have liquidity except through the counterparty to the instrument. Derivatives are generally subject to the risks applicable to the assets, rates, indices or other indicators underlying the derivative. The value of a derivative may fluctuate more than the underlying assets, rates, indices or other indicators to which it relates. Use of derivatives or similar instruments may have different tax consequences for the fund than an investment in the underlying security, and those differences may affect the amount, timing and character of income distributed to shareholders. The fund’s use of derivatives may also increase the amount of taxes payable by shareholders. The U.S. government and non-U.S. governments are in the process of adopting and implementing regulations governing derivatives markets, including mandatory clearing of certain derivatives, margin, and reporting requirements. The ultimate impact of the regulations remains unclear. Additional regulation of derivatives may make derivatives more costly, limit their availability or utility, otherwise adversely affect their performance or disrupt markets. The fund may be exposed to additional risks as a result of the additional regulations. The extent and impact of the additional regulations are not yet fully known and may not be for some time.

With respect to the fund’s cleared derivative transactions, the fund will be required to maintain its positions with a clearing organization through one or more clearing brokers. The clearing organization will require the fund to post margin and the broker may require the fund to post additional margin to secure the fund’s obligations. The amount of margin required may change from time to time. In addition, cleared transactions may be more expensive to maintain than over-the-counter transactions and may require the fund to deposit larger amounts of margin. The fund may not be able to recover margin amounts if the broker has financial difficulties. Also, the broker may require the fund to terminate a derivatives position under certain circumstances. This may cause the fund to lose money.

Risks associated with the use of derivatives are magnified to the extent that an increased portion of the fund’s assets is committed to derivatives in general or is invested in just one or a few types of derivatives.

Credit risk. The value of your investment in the fund could decline if the issuer of a security held by the fund or another obligor for that security (such as a party offering credit enhancement) fails to pay, otherwise defaults, is perceived to be less creditworthy, becomes insolvent or files for bankruptcy. The value of your investment in the fund could also decline if the credit rating of a security held by the fund is downgraded or the credit quality or value of any assets underlying the security declines. If the fund enters into financial contracts (such as certain derivatives, repurchase agreements, reverse repurchase agreements, and when-issued, delayed delivery and forward commitment transactions), the fund will be subject to the credit risk presented by the counterparty. In addition, the fund may incur expenses in an effort to protect the fund’s interests or to enforce its rights against an issuer, guarantor or counterparty or may be hindered or delayed in exercising those rights. Credit risk is broadly gauged by the credit ratings of the securities in which the fund invests. However, ratings are only the opinions of the companies issuing them and are not guarantees as to quality. Securities rated in the lowest category of investment grade (Baa/BBB) may possess certain speculative characteristics. Credit risk is typically greatest for the fund’s high yield debt securities, which are rated below the Baa/BBB categories or unrated securities of comparable quality (“junk” bonds).

Prepayment or call risk. Many fixed income securities give the issuer the option to repay or call the security prior to its maturity date. Issuers often exercise this right when interest rates fall. Accordingly, if the fund holds a fixed income security subject to prepayment or call risk, it will not benefit fully from the increase in value that other fixed income securities generally experience when interest rates fall. Upon prepayment of the security, the fund would also be forced to reinvest the proceeds at then current yields, which would be lower than the yield of the security that was paid off. In addition, if the fund purchases a fixed income security at a premium (at a price that exceeds its stated par or principal value), the fund may lose the amount of the premium paid in the event of prepayment.

Extension risk. When interest rates rise, repayments of fixed income securities may occur more slowly than anticipated, extending the effective duration of these fixed income securities at below market interest rates and causing their market prices to decline more than they would have declined due to the rise in interest rates alone. This may cause the fund’s share price to be more volatile.

Valuation risk. Many factors may influence the price at which the fund could sell any particular portfolio investment. The sales price may well differ—higher or lower—from the fund’s last valuation, and such differences could be significant, particularly for illiquid securities and securities that trade in relatively thin markets and/or markets that experience extreme volatility. If market conditions make it difficult to value some investments, the fund may value these investments using more subjective methods, such as fair value methodologies. Investors who purchase or redeem fund shares on days when the fund is holding fair-valued securities may receive fewer or more shares, or lower or higher redemption proceeds, than they would have received if the fund had not fair-valued securities or had used a different valuation methodology. The value of non-U.S. securities, certain fixed income securities and currencies, as applicable, may be materially affected by events after the close of the markets in which they are traded, but before the fund determines its net asset value. The fund’s ability to value its investments may also be impacted by technological issues and/or errors by pricing services or other third party service providers. The valuation of the fund’s investments involves subjective judgment.

Cash management and defensive investing risk. The value of the investments held by the fund for cash management or defensive investing purposes can fluctuate. Like other fixed income securities, they are subject to risk, including market, interest rate and credit risk. If the fund holds cash uninvested, the cash will be subject to the credit risk of the depository institution holding the cash and the fund will not earn income on the cash. If a significant amount of the fund’s assets is used for cash management or defensive investing purposes, the fund will be less likely to achieve its investment objective. Defensive investing may not work as intended and the value of an investment in the fund may still decline.

Investment in other investment companies risk. If the fund acquires shares of investment companies, including ones affiliated with the fund, shareholders bear both their proportionate share of expenses in the fund (including management and advisory fees) and, indirectly, the expenses of the investment companies (to the extent not offset by LMPFA or its affiliates through waivers).

Redemptions by affiliated funds and by other significant investors. The fund may be an investment option for other Legg Mason, Inc. (“Legg Mason”) sponsored mutual funds that are managed as “funds of funds,” unaffiliated mutual funds and other investors with substantial investments in the fund. As a result, from time to time, the fund may experience relatively large redemptions and could be required to liquidate its assets at inopportune times or at a loss or depressed value, which could cause the value of your investment to decline.

Market events risk. The market values of securities or other assets will fluctuate, sometimes sharply and unpredictably, due to changes in general market conditions, overall economic trends or events, governmental actions or intervention, actions taken by the U.S. Federal Reserve or foreign central banks, market disruptions caused by trade disputes or other factors, political developments, investor sentiment and other factors that may or may not be related to the issuer of the security or other asset. Economies and financial markets throughout the world are increasingly interconnected. Economic, financial or political events, trading and tariff arrangements, terrorism, natural disasters and other circumstances in one country or region could have profound impacts on global economies or markets. As a result, whether or not the fund invests in securities of issuers located in or with significant exposure to the countries directly affected, the value and liquidity of the fund’s investments may be negatively affected.

Risk of increase in expenses. Your actual costs of investing in the fund may be higher than the expenses shown in “Annual fund operating expenses” for a variety of reasons. For example, expenses may be higher if the fund’s average net assets decrease, as a result of redemptions or

otherwise, or if a fee limitation is changed or terminated. Net assets are more likely to decrease and fund expense ratios are more likely to increase when markets are volatile.

Operational risk. Your ability to transact with the fund or the valuation of your investment may be negatively impacted because of the operational risks arising from factors such as processing errors and human errors, inadequate or failed internal or external processes, failures in systems and technology, changes in personnel, and errors caused by third party service providers or trading counterparties. It is not possible to identify all of the operational risks that may affect the fund or to develop processes and controls that completely eliminate or mitigate the occurrence of such failures. The fund and its shareholders could be negatively impacted as a result.

Cybersecurity risk. Cybersecurity incidents, both intentional and unintentional, may allow an unauthorized party to gain access to fund assets, fund or customer data (including private shareholder information), or proprietary information, cause the fund, the manager, the subadvisers and/or their service providers (including, but not limited to, fund accountants, custodians, sub-custodians, transfer agents and financial intermediaries) to suffer data breaches, data corruption or loss of operational functionality or prevent fund investors from purchasing, redeeming or exchanging shares or receiving distributions. The fund, the manager, and the subadvisers have limited ability to prevent or mitigate cybersecurity incidents affecting third party service providers, and such third party service providers may have limited indemnification obligations to the fund or the manager. Cybersecurity incidents may result in financial losses to the fund and its shareholders, and substantial costs may be incurred in order to prevent any future cybersecurity incidents. Issuers of securities in which the fund invests are also subject to cybersecurity risks, and the value of these securities could decline if the issuers experience cybersecurity incidents.

Please note that there are other factors that could adversely affect your investment and that could prevent the fund from achieving its investment objective. More information about risks appears in the SAI. Before investing, you should carefully consider the risks that you will assume.

Portfolio holdings

A description of the fund’s policies and procedures with respect to the disclosure of its portfolio holdings is available in the SAI. The fund posts its complete portfolio holdings at www.leggmason.com/mutualfunds (click on the name of the fund) on a quarterly basis. The fund intends to post its complete portfolio holdings 14 calendar days following the quarter-end. The fund intends to post partial information concerning the fund’s portfolio holdings (such as top 10 holdings or sector breakdowns, for example) on the Legg Mason funds’ website on a monthly basis. The fund intends to post this partial information 10 business days following each month-end. Such information will remain available until the next month’s or quarter’s holdings are posted.

More on fund management

Legg Mason Partners Fund Advisor, LLC (“LMPFA” or the “manager”) is the fund’s investment manager. LMPFA, with offices at 620 Eighth Avenue, New York, New York 10018, also serves as the investment manager of other Legg Mason-sponsored funds. LMPFA provides administrative and certain oversight services to the fund. As of December 31, 2019, LMPFA’s total assets under management were approximately $202.1 billion.

ClearBridge Investments, LLC (“ClearBridge” or the “subadviser”) provides the day-to-day portfolio management of the fund, except for any portion of the fund’s cash and short-term instruments that is allocated to Western Asset Management Company, LLC (“Western Asset”). ClearBridge has offices at 620 Eighth Avenue, New York, New York 10018 and is an investment adviser that manages U.S. and international equity investment strategies for institutional and individual investors. ClearBridge has been committed to delivering long-term results through active management for more than 50 years, and bases its investment decisions on fundamental research and the insights of seasoned portfolio management teams. As of December 31, 2019, ClearBridge’s total assets under management (including assets under management for ClearBridge, LLC, an affiliate of ClearBridge) were approximately $154.6 billion, including $25.0 billion for which ClearBridge provides non-discretionary investment models to managed account sponsors.

Western Asset manages the portion of the fund’s cash and short-term instruments allocated to it. Western Asset, established in 1971, has offices at 385 East Colorado Boulevard, Pasadena, California 91101 and 620 Eighth Avenue, New York, New York 10018. Western Asset acts as investment adviser to institutional accounts, such as corporate pension plans, mutual funds and endowment funds. As of December 31, 2019, the total assets under management of Western Asset and its supervised affiliates were approximately $456.3 billion.

LMPFA, ClearBridge and Western Asset are wholly-owned subsidiaries of Legg Mason, Inc. (“Legg Mason”). Legg Mason, whose principal executive offices are at 100 International Drive, Baltimore, Maryland 21202, is a global asset management company. As of December 31, 2019, Legg Mason’s asset management operations had aggregate assets under management of approximately $803.5 billion.

Portfolio managers

Primary responsibility for the day-to-day management of the fund lies with the following portfolio managers. The portfolio managers have the ultimate authority to make portfolio decisions.

The SAI provides information about the compensation of the portfolio managers, other accounts managed by the portfolio managers and any fund shares held by the portfolio managers.

Management fee

The fund pays a management fee at an annual rate of 0.75% of its average daily net assets.

For the fiscal year ended October 31, 2019, the fund paid LMPFA an effective management fee of 0.75% of the fund’s average daily net assets for management services.

A discussion regarding the basis for the Board’s approval of the fund’s management agreement and subadvisory agreements is available in the fund’s Semi-Annual Report for the period ended April 30, 2019.

Expense limitation

The manager has agreed to waive fees and/or reimburse operating expenses (other than interest, brokerage, taxes, extraordinary expenses and acquired fund fees and expenses) so that the ratio of total annual fund operating expenses will not exceed 1.28% for Class A shares, 2.09% for Class C shares, 1.35% for Class FI shares, 1.60% for Class R shares, 1.00% for Class I shares and 0.90% for Class IS shares, subject to recapture as described below. In addition, the ratio of total annual fund operating expenses for Class IS shares will not exceed the ratio of total annual fund operating expenses for Class I shares, and the ratio of total annual fund operating expenses for Class 1 shares will not exceed the ratio of total annual fund operating expenses for Class A shares, each subject to recapture as described below. These arrangements are expected to continue until December 31, 2021, may be terminated prior to that date by agreement of the manager and the Board, and may be terminated at any time after that

date by the manager. These arrangements, however, may be modified by the manager to decrease total annual fund operating expenses at any time. The manager is also permitted to recapture amounts waived and/or reimbursed to a class during the same fiscal year in which the manager earned the fee or incurred the expense if the class’ total annual fund operating expenses have fallen to a level below the limits described above. In no case will the manager recapture any amount that would result, on any particular business day of the fund, in the class’ total annual fund operating expenses exceeding the applicable limits described above or any other lower limit then in effect. In addition, the manager has agreed to waive the fund’s management fee to an extent sufficient to offset the net management fee payable in connection with any investment in an affiliated money market fund. This management fee waiver is not subject to the recapture provision discussed above.

Additional information

The fund enters into contractual arrangements with various parties, including, among others, the fund’s investment manager and the subadvisers, who provide services to the fund. Shareholders are not parties to, or intended (or “third-party”) beneficiaries of, those contractual arrangements.

This Prospectus and the SAI provide information concerning the fund that you should consider in determining whether to purchase shares of the fund. The fund may make changes to this information from time to time. Neither this Prospectus nor the SAI is intended to give rise to any contract rights or other rights in any shareholder, other than rights conferred by federal or state securities laws.

Distribution

Legg Mason Investor Services, LLC (“LMIS”), a wholly-owned broker/dealer subsidiary of Legg Mason, serves as the fund’s sole and exclusive distributor.

The fund has adopted a shareholder services and distribution plan pursuant to Rule 12b-1 under the Investment Company Act of 1940, as amended. Under the plan, the fund pays distribution and/or service fees based on an annualized percentage of average daily net assets of up to 0.25% for Class A shares; up to 1.00% for Class C shares; up to 0.25% for Class FI shares; and up to 0.50% for Class R shares. Payments by the fund under its plan go to LMIS, financial intermediaries and other parties that provide services in connection with or are otherwise involved in the distribution of its shares or administration of plans or programs that use its shares as their funding medium, and to reimburse certain other expenses and payments. From time to time, LMIS and/or financial intermediaries may agree to a reduction or waiver of these fees. These fees are an ongoing expense and, over time, will increase the cost of your investment and may cost you more than other types of sales charges. Class 1 shares, Class I shares and Class IS shares are not subject to distribution and/or service fees under the plan.

Additional payments

In addition to payments made to intermediaries under the fund’s shareholder services and distribution plan and other payments made by the fund for shareholder services and/or recordkeeping, the distributor, the manager and/or their affiliates make payments for distribution, shareholder servicing, marketing and promotional activities and related expenses out of their profits and other available sources, including profits from their relationships with the fund. These payments are not reflected as additional expenses in the fee table contained in this Prospectus. The recipients of these payments may include the fund’s distributor and affiliates of the manager, as well as Service Agents through which investors may purchase shares of the fund, including your Service Agent. The total amount of these payments is substantial, may be substantial to any given recipient and may exceed the costs and expenses incurred by the recipient for any fund-related marketing or shareholder servicing activities. The payments described in this paragraph are often referred to as “revenue sharing payments.” Revenue sharing arrangements are separately negotiated between the distributor, the manager and/or their affiliates, and the recipients of these payments.

Revenue sharing payments create an incentive for an intermediary or its employees or associated persons to recommend or sell shares of the fund to you. Contact your Service Agent for details about revenue sharing payments it receives or may receive. Additional information about revenue sharing payments is available in the SAI. Revenue sharing payments, as well as payments by the fund under the shareholder services and distribution plan or for recordkeeping and/or shareholder services, also benefit the manager, the distributor and their affiliates to the extent the payments result in more assets being invested in the fund on which fees are being charged.

Choosing a class of shares to buy

Individual investors can generally invest in Class A and Class C shares. Class C shares are not available for purchase through accounts where LMIS is the broker-dealer of record (“LMIS Accounts”). Individual investors who invest directly with the fund and who meet the $1,000,000 minimum initial investment requirement may purchase Class I shares. Retirement Plans and Institutional Investors and Clients of Eligible Financial Intermediaries should refer to “Retirement and Institutional Investors — eligible investors” below for a description of the classes available to them.

Investors not purchasing directly from the fund may purchase shares through a Service Agent. Please note that if you are purchasing shares through a Service Agent, your Service Agent may not offer all classes of shares. Service Agents making fund shares available to their clients determine which share class(es) to make available. Your Service Agent may receive different compensation for selling one class of shares than for selling another class, which may depend on, among other things, the type of investor account and the practices adopted by your Service Agent. Certain Service Agents may impose their own investment fees and practices for purchasing and selling fund shares, which are not described in this Prospectus or the SAI, and which will depend on the policies, procedures and trading platforms of the Service Agent. Consult a representative of your Service Agent about the availability of fund shares and the Service Agent’s practices and other information.

Individual investors investing through a Service Agent may be eligible to invest in Class I or Class IS shares, if such Service Agent is acting solely as an agent on behalf of its customers pursuant to an agreement with LMIS and such investor’s shares are held in an omnibus account on the books of the fund. Please contact your Service Agent for more information.

Please note that the fund does not charge any front-end load, deferred sales charge or other asset-based fee for sales or distribution of Class I shares and Class IS shares. However, if you purchase Class I or Class IS shares through a Service Agent acting solely as an agent on behalf of its customers pursuant to an agreement with LMIS, that Service Agent may charge you a commission in an amount determined and separately disclosed to you by the Service Agent.

Because the fund is not a party to any commission arrangement between you and your Service Agent, any purchases and redemptions of Class I or Class IS shares will be made by the fund at the applicable net asset value (before imposition of the sales commission). Any commissions charged by a Service Agent are not reflected in the fees and expenses listed in the fee table or expense example in this Prospectus nor are they reflected in the performance in the bar chart and table in this Prospectus because these commissions are not charged by the fund.

Each class has different sales charges and expenses, allowing you to choose a class that may be appropriate for you.

When choosing which class of shares to buy, you should consider:

When choosing between Class A or Class C shares, you should be aware that, generally speaking, the larger the size of your investment and the longer your investment horizon, the more likely it will be that Class C shares will not be as advantageous as Class A shares. The annual distribution and/or service fees on Class C shares may cost you more over the longer term than the front-end sales charge and service fees you would have paid for larger purchases of Class A shares. If you are eligible to purchase Class I shares, you should be aware that Class I shares are not subject to a front-end sales charge or distribution or service fees and generally have lower annual expenses than Class A or Class C shares.

The fund’s Class 1 shares are closed to all purchases and incoming exchanges. Investors owning Class 1 shares may continue to maintain their then current Class 1 shares, but are no longer permitted to add to their Class 1 share positions, except through dividend reinvestment.

Each class of shares, except Class IS and Class 1 shares, is authorized to pay fees for recordkeeping services, account servicing, networking, or similar services to Service Agents. As a result, operating expenses of classes that incur new or additional recordkeeping fees may increase over time.

You may buy shares:

Your Service Agent may provide shareholder services that differ from the services provided by other Service Agents. Services provided by your Service Agent may vary by class. You should ask your Service Agent to explain the shareholder services it provides for each class and the compensation it receives in connection with each class.

Your Service Agent may not offer all classes of shares. You should contact your Service Agent for further information.

More information about the fund’s classes of shares is available through the Legg Mason funds’ website. You’ll find detailed information, free of charge and in a clear and prominent format, about sales charges and ways you can qualify for reduced or waived sales charges, including:

To visit the website, go to www.leggmason.com/mutualfunds, and click on the name of the fund. On the selected fund’s page, scroll to the bottom of the page and click on the disclosure labeled “Click here for Legg Mason Funds sales charge and breakpoint information.”

Comparing the fund’s classes

The following table compares key features of the fund’s classes. You should also review the fee table and example at the front of this Prospectus carefully before choosing your share class. Your Service Agent can help you choose a class that may be appropriate for you. Please contact your Service Agent regarding the availability of Class FI, Class R or Class IS shares or, if you plan to purchase shares through the fund, contact the fund. You may be required to provide appropriate documentation confirming your eligibility to invest in these share classes. Your Service Agent may receive different compensation depending upon which class you choose. For more information please see the appendix located at the end of this Prospectus titled “Appendix: Waivers and Discounts Available from Certain Service Agents.”

Sales charges

Class A shares

You buy Class A shares at the offering price, which is the net asset value plus a sales charge. You pay a lower rate as the size of your investment increases to certain levels called breakpoints. You do not pay a sales charge on the fund’s distributions or dividends that you reinvest in additional Class A shares.

The table below shows the rate of sales charge you pay, depending on the amount you purchase. It also shows the amount of Service Agent compensation that will be paid out of the sales charge if you buy shares from a Service Agent. For Class A shares sold by the distributor, the distributor will receive the sales charge imposed on purchases of Class A shares (or any contingent deferred sales charge paid on redemptions) and will retain the full amount of such sales charge. Service Agents will receive a distribution and/or service fee payable on Class A shares at an annual rate of up to 0.25% of the average daily net assets represented by the Class A shares serviced by them.

Investments of $1,000,000 or more

You do not pay an initial sales charge when you buy $1,000,000 or more of Class A shares. However, if you redeem these Class A shares within 18 months of purchase, you will pay a contingent deferred sales charge of 1.00%.

Qualifying for a reduced Class A sales charge

There are several ways you can combine multiple purchases of shares of funds or units of a Section 529 college savings plan sold by the distributor (a “Section 529 plan”) to take advantage of the breakpoints in the Class A sales charge schedule. In order to take advantage of reductions in sales charges that may be available to you when you purchase fund shares, you must inform your Service Agent or the fund if you believe you are eligible for a letter of intent or a right of accumulation. Whether you purchased shares of funds and/or units of a Section 529 Plan through one or more Service Agents, directly from the fund or through a combination of the foregoing, it is your responsibility to inform your Service Agent or the fund if you own shares of other funds or units of a Section 529 plan that you believe are eligible to be aggregated with your purchases. If you do not do so, you may not receive all sales charge reductions for which you are eligible. Account statements may be necessary in order to verify your eligibility for a reduced sales charge.

Accumulation Privilege – allows you to combine the current value of shares of the fund with shares of other funds or units of a Section 529 plan sold by the distributor that are owned by:

with the dollar amount of your next purchase of Class A shares for purposes of calculating the initial sales charges.

If you hold fund shares or units of a Section 529 plan in accounts at two or more Service Agents, please contact your Service Agents to determine whether your shares or units may be combined.

Shares of money market funds sold by the distributor acquired by exchange from other funds offered with a sales charge may be combined. Prior to May 1, 2020, shares of money market funds sold by the distributor that were not acquired by exchange from other funds offered with a sales charge may not be combined. Effective May 1, 2020, any shares of money market funds sold by the distributor (whether or not they were acquired by exchange from other funds offered with a sales charge) may be combined for purposes of the accumulation privilege. Please contact your Service Agent or the fund for additional information.

Certain trustees and other fiduciaries may be entitled to combine accounts in determining their sales charge.

Letter of Intent – allows you to purchase Class A shares of funds or units of a Section 529 plan sold by the distributor over a 13-month period and pay the same sales charge, if any, as if all shares or units had been purchased at once. At the time you enter into the letter of intent, you select your asset goal amount from among the levels of investment specified under “Amount of investment” in the chart above. Generally, purchases of shares of funds or units of a Section 529 plan sold by the distributor that are purchased during the 13-month period by:

are eligible for inclusion under the letter of intent, based on the public offering price at the time of the purchase and any capital appreciation on those shares or units. In addition, you can include the current value of any eligible holdings toward your asset goal amount.

If you hold shares of funds or units of a Section 529 plan sold by the distributor in accounts at two or more Service Agents, please contact your Service Agents to determine whether your shares or units may be credited toward your asset goal amount.

Shares of money market funds sold by the distributor acquired by exchange from other funds offered with a sales charge may be credited toward your asset goal amount. Prior to May 1, 2020, shares of money market funds sold by the distributor that were not acquired by exchange from other funds offered with a sales charge may not be combined. Effective May 1, 2020, any shares of money market funds sold by the distributor (whether or not they were acquired by exchange from other funds offered with a sales charge) may be combined for purposes of the letter of intent. Please contact your Service Agent for additional information.

If you do not meet your asset goal amount, shares in the amount of any sales charges due, based on the amount of your actual purchases, will be redeemed from your account.

Waivers for certain Class A investors

Class A initial sales charges are waived for certain types of investors, including:

If you qualify for a waiver of the Class A initial sales charge, you must notify your Service Agent or the fund at 1-877-721-1926 at the time of purchase and provide sufficient information at the time of purchase to permit verification that the purchase qualifies for the initial sales charge waiver.

Different Service Agents may impose different sales loads or offer different ways to reduce sales loads. These variations are described at the end of this Prospectus in the appendix titled “Appendix: Waivers and Discounts Available from Certain Service Agents.”

For additional information regarding waivers of Class A initial sales charges, contact your Service Agent or the fund, consult the SAI or visit the Legg Mason funds’ website, www.leggmason.com/mutualfunds, and click on the name of the fund. On the selected fund’s page, scroll to the bottom of the page and click on the disclosure labeled “Click here for Legg Mason Funds sales charge and breakpoint information.”

Class C shares

You buy Class C shares at net asset value with no initial sales charge. However, if you redeem your Class C shares within one year of purchase, you will pay a contingent deferred sales charge of 1.00%. Class C shares are not available for purchase through LMIS Accounts.

LMIS generally will pay Service Agents selling Class C shares a commission of up to 1.00% of the purchase price of the Class C shares they sell. LMIS will retain the contingent deferred sales charges and an annual distribution and/or service fee of up to 1.00% of the average daily net assets represented by the Class C shares serviced by these Service Agents until the thirteenth month after purchase. Starting in the thirteenth month after purchase, these Service Agents will receive an annual distribution and/or service fee of up to 1.00% of the average daily net assets represented by the Class C shares serviced by them.

Class C share conversion

Effective April 15, 2019, except as noted below, Class C shares automatically convert to Class A shares after the shares have been held for 10 years from the purchase date; the shares will be converted on the next monthly conversion processing date after the 10 year anniversary of purchase (generally, on the fifteenth of the month, or the next business day if the fifteenth is not a business day). The initial Class C share conversion occurred on April 15, 2019, when Class C shares purchased on or prior to April 15, 2009 converted to Class A shares, except as noted below. It is the responsibility of your Service Agent and not the fund or LMIS to ensure that you are credited with the proper holding period. If your Service Agent

does not have records verifying that your shares have been held for at least 10 years, your Service Agent may not convert your Class C shares to Class A shares. Group retirement plans held in an omnibus recordkeeping platform through a Service Agent that does not track participant-level share lot aging may not convert Class C shares to Class A shares. Customers of certain Service Agents may be subject to different terms or conditions, as set by their Service Agent, in connection with such conversions. Please refer to the appendix titled “Appendix: Waivers and Discounts Available from Certain Service Agents” on page A-1 of this Prospectus or contact your Service Agent for more information.

For Class C shares that have been acquired through an exchange from another fund sold by LMIS, the purchase date is calculated from the date the shares were originally acquired in the other fund. When Class C shares that a shareholder acquired through a purchase or exchange convert, any other Class C shares that the shareholder acquired as reinvested dividends and distributions related to those shares also will convert into Class A shares on a pro rata basis.

All conversions from Class C shares to Class A shares will be based on the per share net asset value without the imposition of any sales load, fee or other charge. The conversion from Class C shares to Class A shares is not considered a taxable event for federal income tax purposes.

Class FI shares

You buy Class FI shares at net asset value with no initial sales charge and no contingent deferred sales charge when redeemed. Class FI shares are not available for purchase through LMIS Accounts.

Service Agents receive an annual distribution and/or service fee of up to 0.25% of the average daily net assets represented by the Class FI shares serviced by them.

Class R shares

You buy Class R shares at net asset value with no initial sales charge and no contingent deferred sales charge when redeemed.

Service Agents receive an annual distribution and/or service fee of up to 0.50% of the average daily net assets represented by the Class R shares serviced by them.

Class I shares and Class IS shares

You buy Class I shares and Class IS shares at net asset value with no initial sales charge and no contingent deferred sales charge when redeemed. Class I shares and Class IS shares are not subject to any distribution and/or service fees. However, if you purchase Class I shares or Class IS shares through a Service Agent acting solely as an agent on behalf of its customers pursuant to an agreement with LMIS, the Service Agent may charge you a commission in an amount determined and separately disclosed to you by the Service Agent. In order to purchase Class I shares or Class IS shares, individual investors must meet the eligibility criteria to invest in such shares or purchase such shares through a Service Agent who holds shares through an omnibus account held on the books of the fund.

Class 1 shares

The fund’s Class 1 shares are closed to all purchases and incoming exchanges. Investors owning Class 1 shares may continue to maintain their then-current Class 1 shares but are no longer permitted to add to their Class 1 share positions, except through dividend reinvestment.

More about contingent deferred sales charges

The contingent deferred sales charge is based on the net asset value at the time of purchase or redemption, whichever is less, and therefore you do not pay a sales charge on amounts representing appreciation or depreciation.

In addition, you do not pay a contingent deferred sales charge:

Each time you place a request to redeem shares, the fund will first redeem any shares in your account that are not subject to a contingent deferred sales charge and then redeem the shares in your account that have been held the longest.

If you redeem shares of a fund sold by the distributor and pay a contingent deferred sales charge, you may, under certain circumstances, reinvest all or part of the redemption proceeds within 60 days in any other fund sold by the distributor and receive pro rata credit for any contingent deferred sales charge imposed on the prior redemption. Please contact your Service Agent or the fund for additional information.

The distributor receives contingent deferred sales charges as partial compensation for its expenses in selling shares, including the payment of compensation to your Service Agent.

Contingent deferred sales charge waivers

The contingent deferred sales charge for each share class will generally be waived:

To have your contingent deferred sales charge waived, you or your Service Agent must let the fund know at the time you redeem shares that you qualify for such a waiver.

Different Service Agents may offer different contingent deferred sales charge waivers. These variations are described at the end of this Prospectus in the appendix titled “Appendix: Waivers and Discounts Available from Certain Service Agents.”

For additional information regarding waivers of contingent deferred sales charges, contact your Service Agent or the fund, consult the SAI or visit the Legg Mason funds’ website, www.leggmason.com/mutualfunds and click on the name of the fund. On the selected fund’s page, scroll to the bottom of the page and click on the disclosure labeled “Click here for Legg Mason Funds sales charge and breakpoint information.”

Retirement and Institutional Investors — eligible investors

Retirement Plans

“Retirement Plans” include 401(k) plans, 457 plans, employer-sponsored 403(b) plans, profit-sharing plans, non-qualified deferred compensation plans, employer sponsored benefit plans (including health savings accounts), other similar employer-sponsored retirement and benefit plans, and individual retirement accounts that are administered on the same IRA recordkeeping platform and that invest in the fund through a single omnibus account pursuant to a special contractual arrangement with the fund or the distributor. Retirement Plans do not include individual retirement vehicles, such as traditional and Roth IRAs (absent an exception that is explicitly described in this Prospectus), Coverdell education savings accounts, individual 403(b)(7) custodial accounts, Keogh plans, SEPs, SARSEPs, SIMPLE IRAs or similar accounts.

Retirement Plans with omnibus accounts held on the books of the fund can generally invest in Class A, Class C, Class FI, Class R, Class I and Class IS shares.

Investors who rollover fund shares from a Retirement Plan into an individual retirement account administered on the same retirement plan platform may hold, purchase and exchange shares of the fund to the same extent as the applicable Retirement Plan.

Although Retirement Plans with omnibus accounts held on the books of the fund are not subject to minimum initial investment requirements for any of these share classes, certain investment minimums may be imposed by a Service Agent. The distributor may impose certain additional requirements. Please contact your Service Agent for more information.

Other Retirement Plans

“Other Retirement Plans” include Retirement Plans investing through brokerage accounts and also include certain Retirement Plans with direct relationships to the fund that are neither Institutional Investors nor investing through omnibus accounts. Other Retirement Plans and individual retirement vehicles, such as IRAs, are treated like individual investors for purposes of determining sales charges and any applicable sales charge reductions or waivers.

“Other Retirement Plans” do not include arrangements whereby an investor would rollover fund shares from a Retirement Plan into an individual retirement account administered on the same retirement plan platform. Such arrangements are deemed to be “Retirement Plans” and are subject to the rights and privileges described under “Retirement and Institutional Investors — eligible investors — Retirement Plans.”

Other Retirement Plan investors and individual retirement vehicles can generally invest in Class A, Class C and Class I shares.

Clients of Eligible Financial Intermediaries

“Clients of Eligible Financial Intermediaries” are investors who invest in the fund through Service Agents that (i) charge such investors an ongoing fee for advisory, investment, consulting or similar services, or (ii) have entered into an agreement with the distributor to offer Class A, Class FI, Class R, Class I or Class IS shares through a no-load network or platform (“Eligible Investment Programs”). Such investors may include investors who invest in the fund through the program of a Service Agent where the investor typically invests $10 million or more in assets under management in accounts with the Service Agent (“Management Accounts”). Such investors may also include pension and profit sharing plans, other employee benefit trusts, endowments, foundations and corporations. Eligible Investment Programs may also include college savings vehicles such as Section 529 plans and direct retail investment platforms through mutual fund “supermarkets,” where the sponsor links its client’s account (including IRA accounts on such platforms) to a master account in the sponsor’s name. The Service Agent may impose separate investment minimums.

Clients of Eligible Financial Intermediaries may generally invest in Class A, Class FI, Class R, Class I or Class IS shares. Class I and Class IS shares are available for exchange from Class A or Class C shares of the fund by participants in Eligible Investment Programs.

Institutional Investors

“Institutional Investors” may include corporations, banks, trust companies, insurance companies, investment companies, foundations, endowments, defined benefit plans and other similar entities. The distributor or the Service Agent may impose additional eligibility requirements or criteria to determine if an investor, including the types of investors listed above, qualifies as an Institutional Investor.

Institutional Investors may invest in Class I or Class IS shares if they meet the $1,000,000 minimum initial investment requirement. Institutional Investors may also invest in Class A and Class C shares, which have different investment minimums, fees and expenses.

Class A shares — Retirement Plans

Retirement Plans may buy Class A shares. Under certain programs for current and prospective Retirement Plan investors sponsored by Service Agents, the initial sales charge and contingent deferred sales charge for Class A shares are waived where:

LMIS does not pay Service Agents selling Class A shares to Retirement Plans with a direct omnibus relationship with the fund a commission on the purchase price of Class A shares sold by them. However, for certain Retirement Plans that are permitted to purchase shares at net asset value, LMIS

may pay Service Agents commissions of up to 1.00% of the purchase price of the Class A shares that are purchased with regular ongoing plan contributions. Please contact your Service Agent for more information.

Class C shares — Retirement Plans

Retirement Plans with omnibus accounts held on the books of the fund may buy Class C shares at net asset value without paying a contingent deferred sales charge. LMIS does not pay Service Agents selling Class C shares to Retirement Plans with omnibus accounts held on the books of the fund a commission on the purchase price of Class C shares sold by them. Instead, immediately after purchase, LMIS may pay these Service Agents an annual distribution and/or service fee of up to 1.00% of the average daily net assets represented by the Class C shares serviced by them.

Certain Retirement Plan programs with exchange features in effect prior to November 20, 2006, as approved by LMIS, remain eligible for exchange from Class C shares to Class A shares in accordance with the program terms. Please see the SAI for more details.

Class FI shares

Class FI shares are offered only to Clients of Eligible Financial Intermediaries and Retirement Plans.

Class R shares

Class R shares are offered only to Retirement Plans with omnibus accounts held on the books of the fund (either at the plan level or at the level of the Service Agent), to Clients of Eligible Financial Intermediaries and through Eligible Investment Programs.

Class I shares

Class I shares may be purchased by:

Investors who qualify as Clients of Eligible Financial Intermediaries or who participate in Eligible Investment Programs made available through their Service Agents (such as investors in fee-based advisory or mutual fund “wrap” programs) are eligible to purchase, directly or via exchange, Class I shares, among other share classes. In such cases your ability to hold Class I shares may be premised on your continuing participation in a fee-based advisory or mutual fund wrap program.

Your Service Agent may reserve the right to redeem your Class I shares or exchange them for Class A shares of the same fund, as applicable, if you terminate your fee-based advisory or mutual fund wrap program and are no longer eligible for Class I shares. You may be subject to an initial sales charge in connection with such exchange, and you will be subject to the annual distribution and/or service fee applicable to Class A shares. Any redemption may generate a taxable gain or loss and significantly change the asset allocation of your account. Please contact your Service Agent for more information.

Certain waivers of these requirements for individuals associated with the fund, Legg Mason or its affiliates are discussed in the SAI.

Class IS shares

Class IS shares may be purchased by accounts which are not subject to the payment of recordkeeping, account servicing, networking or similar fees by the fund to any intermediary. Class IS shares may be purchased by:

Investors who qualify as Clients of Eligible Financial Intermediaries or who participate in Eligible Investment Programs made available through their Service Agents (such as investors in fee-based advisory or mutual fund “wrap” programs) are eligible to purchase, directly or via exchange, Class IS shares, among other share classes. In such cases your ability to hold Class IS shares may be premised on your continuing participation in a fee-based advisory or mutual fund wrap program.

Your Service Agent may reserve the right to redeem your Class IS shares or exchange them for Class A shares of the same fund, as applicable, if you terminate your fee-based advisory or mutual fund wrap program and are no longer eligible for Class IS shares. You may be subject to an initial sales

charge in connection with such exchange and you will be subject to the annual distribution and/or service fee applicable to Class A shares. Any redemption may generate a taxable gain or loss and significantly change the asset allocation of your account.

Please contact your Service Agent for more information.

Other considerations

Plan sponsors, plan fiduciaries and other Service Agents may choose to impose qualification requirements that differ from the fund’s share class eligibility standards. In certain cases this could result in the selection of a share class with higher distribution and/or service fees than otherwise would have been charged. The fund is not responsible for, and has no control over, the decision of any plan sponsor, plan fiduciary or Service Agent to impose such differing requirements. Please consult with your plan sponsor, plan fiduciary or Service Agent for more information about available share classes.

Your Service Agent may not offer all share classes. Please contact your Service Agent for additional details.

Buying shares

Additional information about purchases

If you pay with a check or ACH transfer that does not clear or if your payment is not received in a timely manner, your purchase may be cancelled and you may be liable for any loss to the fund. Please note that the fund will not accept cash, money orders, third-party checks, starter checks, internet

checks, cashier checks if not received from a financial institution in connection with a transfer of assets, credit card convenience checks and traveler’s checks for purchase of fund shares. The fund and its agents have the right to reject or cancel any purchase due to nonpayment.

Account registration changes

Changes in registration or certain account options for accounts held directly with the fund must be made in writing. Medallion signature guarantees may be required. (See “Other things to know about transactions—Medallion signature guarantees” below.) All correspondence must include the account number and must be sent to one of the following addresses:

Regular Mail:

Legg Mason Funds

P.O. Box 9699

Providence, RI 02940-9699

Express, Certified or Registered Mail:

Legg Mason Funds

4400 Computer Drive

Westborough, MA 01581

Exchanging shares

Redeeming shares

Other things to know about transactions

When you buy, exchange or redeem shares, your request must be in good order. This means you have provided the following information, without which your request may not be processed:

In certain circumstances, such as during periods of market volatility, severe weather and emergencies, shareholders may experience difficulties placing exchange or redemption orders by telephone. In that case, shareholders should consider using the fund’s other exchange and redemption procedures described under “Exchanging shares” and “Redeeming shares.”

The transfer agent or the fund will employ reasonable procedures to confirm that any telephone, electronic or other exchange or redemption request is genuine, which may include recording calls, asking the caller to provide certain personal identification information, employing identification numbers, sending you a written confirmation or requiring other confirmation procedures from time to time. If these procedures are followed, neither the fund nor its agents will bear any liability for these transactions, subject to applicable law.

The fund does not consider the U.S. Postal Service or private delivery services to be its agents. Therefore, deposits in the mail or with such delivery services, or receipt at the fund’s post office box, of purchase requests or redemption orders, do not constitute receipt by the fund or its transfer agent.

The fund has the right to:

For your protection, the fund or your Service Agent may request additional information in connection with large redemptions, unusual activity in your account, or otherwise to ensure your redemption request is in good order. Please contact your Service Agent or the fund for more information.

Medallion signature guarantees

To be in good order, your redemption request must include a Medallion signature guarantee if you:

For other types of transactions involving changes to your account registration information, please contact the fund or your Service Agent.

When a Medallion signature guarantee is called for, the shareholder should have a Medallion signature guarantee stamped under his or her signature. You can obtain a signature guarantee from most banks, dealers, brokers, credit unions and federal savings and loan institutions, national securities exchanges, registered securities associations and clearing agencies (each an “Eligible Guarantor Institution”), but not from a notary public.

The fund and its agents reserve the right to reject any Medallion signature guarantee pursuant to written signature guarantee standards or procedures, which may be revised in the future to permit them to reject Medallion signature guarantees from Eligible Guarantor Institutions. The fund may change the signature guarantee requirements from time to time without prior notice to shareholders.

Restrictions on the availability of the fund outside the United States

The distribution of this Prospectus and the offering of shares of the fund are restricted in certain jurisdictions. This Prospectus is not an offer or solicitation in any jurisdiction where such offer or solicitation is unlawful, where the person making an offer or solicitation is not authorized to make

it or a person receiving an offer or solicitation may not lawfully receive it or may not lawfully invest in the fund. Investors should inform themselves as to the legal requirements within their own country before investing in the fund.

This Prospectus, and the offer of shares hereunder, are not directed at persons outside the United States. In particular, the fund is not intended to be marketed to prospective investors in any member state of the European Union, Iceland, Liechtenstein or Norway (collectively, the “European Economic Area” or “EEA”). No notification or application has been made to the competent authority of any member state of the EEA under the Alternative Investment Fund Managers Directive (or any applicable legislation or regulations made thereunder) to market the fund to investors in the EEA and it is not intended that any such notification or application shall be made.

U.S. citizens with addresses in the United States, and non-U.S. citizens who reside in the United States and have U.S. addresses, are permitted to establish accounts with the fund. For these purposes, the “United States” and “U.S.” include U.S. territories.

The fund generally does not permit persons who do not reside in the United States or who do not have U.S. addresses to establish accounts. Therefore, U.S. citizens residing in foreign countries, as well as non-U.S. citizens residing in foreign countries, generally will not be permitted to establish accounts with the fund.

For further information, you or your Service Agent may contact the fund at 1-877-721-1926 or 1-203-703-6002.

Anti-money laundering

Federal anti-money laundering regulations require all financial institutions to obtain, verify and record information that identifies each person who opens an account. When you sign your account application, you may be asked to provide additional information in order for the fund to verify your identity in accordance with these regulations. If you are opening the account in the name of a legal entity (e.g. partnership, limited liability company, business trust, corporation, etc.), you may also be required to supply the identity of the beneficial owners and a control individual with management authority, prior to the opening of your account. Accounts may be restricted and/or closed, and the monies withheld, pending verification of this information or as otherwise required under these and other federal regulations.

Small account fees/Mandatory redemptions

Small accounts may be subject to a small account fee or to mandatory redemption, as described below. Please contact your Service Agent or the fund for information on the policy applicable to your account.

Small account fees

To offset the relatively higher impact on fund expenses of servicing smaller accounts, the fund may charge you a fee of $3.75 per account that is determined and assessed quarterly by your Service Agent or by LMIS for LMIS Accounts on the next-to-last business day of the quarter (with an annual maximum of $15.00 per account) if the value of your account is below $1,000 (if applicable, $250 for retirement plans that are not employer-sponsored) for any reason (including declines in net asset value). The small account fee will be charged by redeeming shares in your account. If the value of your account is $3.75 or less, the amount in the account may be exhausted to pay the small account fee. If your Service Agent or LMIS assesses a small account fee, the small account fee will not be assessed on systematic investment plans until the end of the first quarter after the account has been established for 21 months. Payment of the small account fee through a redemption of fund shares may result in tax consequences to you (see “Taxes” for more information).

The small account fee will not be charged on, if applicable: (i) Retirement Plans (but will be charged on other plans that are not employer-sponsored such as traditional and Roth individual retirement accounts, Coverdell education savings accounts, individual 403(b)(7) custodial accounts, Keogh plans, SEPs, SARSEPs, SIMPLE IRAs or similar accounts); (ii) Legg Mason funds that have been closed to subsequent purchases for all classes; (iii) accounts that do not have a valid address as evidenced by mail being returned to the fund or its agents; (iv) Class FI, Class R, Class I and Class IS shares; and (v) for new accounts (except for new accounts opened by way of an exchange), a small account fee will not be charged during the calendar quarter in which you open your account.

If your share class is no longer offered, you may not be able to bring your account up to the minimum investment amount (although you may exchange into existing accounts of other Legg Mason funds in which you hold the same share class, to the extent otherwise permitted by those funds and subject to any applicable sales charges).

The small account fee is calculated on a fund-by-fund basis. If you have accounts in multiple funds, they will not be aggregated for the purpose of calculating the small account fee.

Some shareholders who hold accounts in Classes A and C of the same fund may have those accounts aggregated for the purposes of these calculations. Please contact the fund or your Service Agent for more information.

Small account balance liquidations

The fund reserves the right to ask you to bring your account up to a minimum investment amount determined by your Service Agent if the aggregate value of the fund shares in your account is less than $500 or $250 for retirement plans that are not employer-sponsored for any reason (including solely due to declines in net asset value and/or failure to invest at least $500 or $250 for retirement plans that are not employer-sponsored within a reasonable period). You will be notified in writing and will have 60 days to make an additional investment to bring your account value up to the

required level. If you choose not to do so within this 60-day period, the fund may close your account and send you the redemption proceeds. If your share class is no longer offered, you may not be able to bring your account up to the minimum investment amount.

Some shareholders who hold accounts in multiple classes of the same fund may have those accounts aggregated for the purposes of these calculations. If your account is closed, you will not be eligible to have your account reinstated without imposition of any sales charges that may apply to your new purchase. Please contact your Service Agent for more information. Any redemption of fund shares may result in tax consequences to you (see “Taxes” for more information).

This policy does not apply to: (i) certain broker-controlled accounts established through the National Securities Clearing Corporation’s Networking system; (ii) qualified retirement plans (such as 401(k) plans, 403(b) plans, profit sharing plans and money purchase plans); (iii) accounts with an active systematic investment plan; (iv) accounts with an active systematic withdrawal plan; (v) accounts that do not have a valid address as evidenced by mail being returned to the fund or its agents and (vi) accounts identified to us by the applicable Service Agent as being fee-based accounts.

General

The fund may, with prior notice, change the minimum size of accounts subject to mandatory redemption, which may vary by class, implement fees for other small accounts or change the amount of the fee for small direct accounts.

Subject to applicable law, the fund may, with prior notice, adopt other policies from time to time requiring mandatory redemption of shares in certain circumstances.

For more information, please contact your Service Agent or the fund or consult the SAI.

Frequent trading of fund shares

Frequent purchases and redemptions of fund shares may, in many cases, interfere with the efficient management of the fund, increase fund transaction costs, and have a negative effect on the fund’s long-term shareholders. For example, in order to handle large flows of cash into and out of the fund, the subadviser may need to allocate more assets to cash or other short-term investments or sell securities, rather than maintaining full investment in securities selected to achieve the fund’s investment objective. Frequent trading may cause the fund to sell securities at less favorable prices. Transaction costs, such as brokerage commissions and market spreads, can detract from the fund’s performance. In addition, the return received by long-term shareholders may be reduced when trades by other shareholders are made in an effort to take advantage of certain pricing discrepancies, when, for example, it is believed that the fund’s share price, which is determined at the close of the NYSE on each trading day, does not accurately reflect the value of the fund’s investments. Funds investing in foreign securities have been particularly susceptible to this form of arbitrage, but other funds could also be affected.

Because of the potential harm to funds sold by the fund’s distributor and their long-term shareholders, the Board has approved policies and procedures that are intended to detect and discourage excessive trading and market timing abuses through the use of various surveillance techniques. Under these policies and procedures, the fund may limit additional exchanges or purchases of fund shares by shareholders who are believed by the manager to be engaged in these abusive trading activities in the fund or in other funds sold by the distributor. In the event that an exchange or purchase request is rejected, the shareholder may nonetheless redeem its shares. The intent of the policies and procedures is not to inhibit legitimate strategies, such as asset allocation, dollar cost averaging, or similar activities that may nonetheless result in frequent trading of fund shares.

Under the fund’s policies and procedures, the fund reserves the right to restrict or reject purchases of shares (including exchanges) without prior notice whenever a pattern of excessive trading by a shareholder is detected in funds sold by the distributor. A committee established by the manager administers the policy. The policy provides that the committee may take action, which may include using its best efforts to restrict a shareholder’s trading privileges in funds sold by the distributor, if that shareholder has engaged in one or more “Round Trips” across all funds sold by the distributor. However, the committee has the discretion to determine that action is not necessary if it is determined that the pattern of trading is not abusive or harmful. In making such a determination, the committee will consider, among other things, the nature of the shareholder’s account, the reason for the frequent trading, the amount of trading and the particular funds in which the trading has occurred. Additionally, the committee has the discretion to make inquiries or to take any action against a shareholder whose trading appears inconsistent with the frequent trading policy, regardless of the number of Round Trips. Examples of the types of actions the committee may take include heightened surveillance of a shareholder account, providing a written warning letter to an account holder, restricting the shareholder from purchasing additional shares in the fund altogether or imposing other restrictions (such as requiring purchase orders to be submitted by mail) that would deter the shareholder from trading frequently in the fund. The committee will generally follow a system of progressive deterrence, although it is not required to do so.

A “Round Trip” is defined as a purchase (including subscriptions and exchanges) into a fund sold by the distributor either preceded or followed by a sale (including redemptions and exchanges) of the same or a similar number of shares out of that fund within 30 days of such purchase. Purchases and sales of the fund’s shares pursuant to an automatic investment plan or similar program for periodic transactions are not considered in determining Round Trips. These policies and procedures do not apply to money market funds sold by the distributor.

The policies apply to any account, whether a direct account or accounts with financial intermediaries such as investment advisers, broker/dealers or retirement plan administrators, commonly called omnibus accounts, where the intermediary holds fund shares for a number of its customers in one account. The fund’s ability to monitor trading in omnibus accounts may, however, be severely limited due to the lack of access to an individual investor’s trading activity when orders are placed through these types of accounts. There may also be operational and technological limitations on

the ability of the fund’s service providers to identify or terminate frequent trading activity within the various types of omnibus accounts. The distributor has entered into agreements with intermediaries requiring the intermediaries to, among other things, help identify frequent trading activity and prohibit further purchases or exchanges by a shareholder identified as having engaged in frequent trading.

The fund has also adopted policies and procedures to prevent the selective release of information about the fund’s holdings, as such information may be used for market-timing and similar abusive practices.

The policies provide for ongoing assessment of the effectiveness of current policies and surveillance tools, and the Board reserves the right to modify these or adopt additional policies and restrictions in the future. Shareholders should be aware, however, that any surveillance techniques currently employed by the fund or other techniques that may be adopted in the future may not be effective, particularly where the trading takes place through certain types of omnibus accounts. Furthermore, the fund may not apply its policies consistently or uniformly, resulting in the risk that some shareholders may be able to engage in frequent trading while others will bear the costs and effects of that trading.

Although the fund will attempt to monitor shareholder transactions for certain patterns of frequent trading activity, there can be no assurance that all such trading activity can be identified, prevented or terminated. Monitoring of shareholder transactions may only occur for shareholder transactions that exceed a certain transaction amount threshold, which may change from time to time. The fund reserves the right to refuse any client or reject any purchase order for shares (including exchanges) for any reason.

Record ownership

If you hold shares through a Service Agent, your Service Agent may establish and maintain your account and be the shareholder of record. In the event that the fund holds a shareholder meeting, your Service Agent, as record holder, will be entitled to vote your shares and may seek voting instructions from you. If you do not give your Service Agent voting instructions, your Service Agent, under certain circumstances, may nonetheless be entitled to vote your shares.

Confirmations and account statements

If you bought shares directly from the fund, you will receive a confirmation from the fund after each transaction (except a reinvestment of dividends or capital gain distributions, an investment made through the Systematic Investment Plan, exchanges made through a systematic exchange plan and withdrawals made through the Systematic Withdrawal Plan). Shareholders will receive periodic account statements.

To assist you in the management of your account you may direct the transfer agent to send copies of your confirmations and/or periodic statements to another party whom you designate, at no charge.

Dividends, other distributions and taxes

Dividends and other distributions

The fund generally pays dividends and distributes capital gain, if any, once in December and at such other times as are necessary. The fund may pay additional distributions and dividends in order to avoid a federal tax.

You can elect to receive dividends and/or other distributions in cash.

Unless you elect to receive dividends and/or other distributions in cash, your dividends and capital gain distributions will be automatically reinvested in shares of the same class you hold, at the net asset value determined on the reinvestment date. You do not pay a sales charge on reinvested distributions or dividends.

If you hold shares directly with the fund and you elect to receive dividends and/or distributions in cash, you have the option to receive such dividends and/or distributions via a direct deposit to your bank account or, provided that the dividend and/or distribution is $10.00 or more, by check. If you choose to receive dividends and/or distributions via check, amounts less than $10.00 will automatically be reinvested in fund shares as described above.

If you do not want dividends and/or distributions in amounts less than $10.00 to be reinvested in fund shares, you must elect to receive dividends and distributions via a direct deposit to your bank account.

If you hold Class A or Class C shares directly with the fund, you may instruct the fund to have your dividends and/or distributions invested in the corresponding class of shares of another fund sold by the distributor, subject to the following conditions:

To change those instructions, you must notify your Service Agent or the fund at least three days before the next distribution is to be paid.

Please contact your Service Agent or the fund to discuss what options are available to you for receiving your dividends and other distributions.

The Board reserves the right to revise the dividend policy or postpone the payment of dividends, if warranted in the Board’s judgment, due to unusual circumstances.

Taxes

The following discussion is very general, applies only to shareholders who are U.S. persons, and does not address shareholders subject to special rules, such as those who hold fund shares through an IRA, 401(k) plan or other tax-advantaged account. Except as specifically noted, the discussion is limited to federal income tax matters, and does not address state, local, foreign or non-income taxes. Further information regarding taxes, including certain federal income tax considerations relevant to non-U.S. persons, is included in the SAI. Because each shareholder’s circumstances are different and special tax rules may apply, you should consult your tax adviser about federal, state, local and/or foreign tax considerations that may be relevant to your particular situation.

In general, redeeming shares, exchanging shares and receiving dividends and distributions (whether received in cash or reinvested in additional shares or shares of another fund) are all taxable events. An exchange between classes of shares of the same fund normally is not taxable for federal income tax purposes, whether or not the shares are held in a taxable account.

The following table summarizes the tax status of certain transactions related to the fund.

Distributions attributable to short-term capital gains are taxable to you as ordinary income. Distributions attributable to qualified dividend income received by the fund, if any, may be eligible to be taxed to noncorporate shareholders at the reduced rates applicable to long-term capital gain if certain requirements are satisfied. Distributions of net capital gain reported by the fund as capital gain dividends are taxable to you as long-term capital gain regardless of how long you have owned your shares. Noncorporate shareholders ordinarily pay tax at reduced rates on long-term capital gain.

You may want to avoid buying shares when the fund is about to declare a dividend or capital gain distribution because it will be taxable to you even though it may economically represent a return of a portion of your investment.

A Medicare contribution tax is imposed at the rate of 3.8% on all or a portion of net investment income of U.S. individuals if their income exceeds specified thresholds and on all or a portion of undistributed net investment income of certain estates and trusts. Net investment income generally includes for this purpose dividends and capital gain distributions paid by the fund and gain on the redemption or exchange of fund shares.

A dividend declared by the fund in October, November or December and paid during January of the following year will, in certain circumstances, be treated as paid in December for tax purposes.

The fund’s investment in certain foreign securities, foreign currencies or foreign currency derivatives may affect the amount, timing, and character of fund distributions to shareholders.

After the end of each year, your Service Agent or the fund will provide you with information about the distributions and dividends you received and any redemptions of shares during the previous year. Because each shareholder’s circumstances are different and special tax rules may apply, you should consult your tax adviser about your investment in the fund.

Share price

You may buy, exchange or redeem shares at their net asset value next determined after receipt of your request in good order, adjusted for any applicable sales charge. The fund’s net asset value per share is the value of its assets minus its liabilities divided by the number of shares outstanding. Net asset value is calculated separately for each class of shares.

The fund calculates its net asset value every day the NYSE is open. The fund generally values its securities and other assets and calculates its net asset value as of the scheduled close of regular trading on the NYSE, normally at 4:00 p.m. (Eastern time). If the NYSE closes at a time other than the scheduled closing time, the fund will calculate its net asset value as of the scheduled closing time. The NYSE is closed on certain holidays listed in the SAI.

In order to buy, redeem or exchange shares at a certain day’s price, you must place your order with your Service Agent or the fund transfer agent before the scheduled close of regular trading on the NYSE on that day to receive that day’s price. If the NYSE closes early on that day, you must place your order prior to the scheduled closing time. It is the responsibility of the Service Agent to transmit all orders to buy, exchange or redeem shares to the fund transfer agent on a timely basis.

Valuation of the fund’s securities and other assets is performed in accordance with procedures approved by the Board. These procedures delegate most valuation functions to the manager, which generally uses independent third party pricing services approved by the Board. Under the procedures, assets are valued as follows:

Many factors may influence the price at which the fund could sell any particular portfolio investment. The sales price may well differ—higher or lower—from the fund’s last valuation, and such differences could be significant, particularly for securities that trade in relatively thin markets and/or markets that experience extreme volatility. Moreover, valuing securities using fair value methodologies involves greater reliance on judgment than valuing securities based on market quotations. A fund that uses fair value methodologies may value those securities higher or lower than another fund using market quotations or its own fair value methodologies to price the same securities. There can be no assurance that the fund could obtain the value assigned to a security if it were to sell the security at approximately the time at which the fund determines its net asset value. Investors who purchase or redeem fund shares on days when the fund is holding fair-valued securities may receive a greater or lesser number of shares, or higher or lower redemption proceeds, than they would have received if the fund had not fair-valued the security or had used a different methodology.

Financial highlights

The financial highlights tables are intended to help you understand the performance of each class for the past five years, unless otherwise noted. Certain information reflects financial results for a single fund share. Total return represents the rate that an investor would have earned (or lost) on an investment in the fund, assuming reinvestment of all dividends and other distributions. The information below, for fiscal years ended October 31, 2017 or later, has been audited by the fund’s independent registered public accounting firm, PricewaterhouseCoopers LLP, whose report, along with the fund’s financial statements, is incorporated by reference into the fund’s SAI (see back cover) and is included in the fund’s annual report. The information for the years prior to the fiscal year ended October 31, 2017 was audited by another independent registered public accounting firm. The fund’s annual report is available upon request by calling toll-free 1-877-721-1926.