497

Interval Funds

Prospectus

October 31, 2018 (as supplemented January 7, 2019)

PIMCO Flexible Credit Income Fund

	Common Shares
	Inst Class	Class A
PIMCO Flexible Credit Income Fund	PFLEX	PFFLX

Neither the U.S. Securities and Exchange Commission nor the U.S. Commodity Futures Trading Commission has approved or disapproved of these securities or determined that this prospectus is truthful or complete. Any representation to the contrary is a criminal offense.

PIMCO Flexible Credit Income Fund (the "Fund") is a non-diversified, closed-end management investment company that continuously offers its shares (the "Common Shares") and is operated as an "interval fund." The Fund currently has two separate classes of Common Shares: Institutional Class and Class A.

Investment Objectives. The Fund seeks to provide attractive risk-adjusted returns and current income.

Investment Strategy. The Fund seeks to achieve its investment objectives by investing, under normal market circumstances across a wide array of global credit sectors, including corporate, mortgage, consumer, emerging market and municipal credit markets, and utilizing a flexible asset allocation strategy among multiple public and private credit sectors in the global credit markets, including corporate debt (including, among other things, fixed-, variable- and floating-rate bonds, loans, convertible and contingent convertible securities and stressed, distressed and defaulted debt securities issued by U.S. or foreign (non-U.S.) corporations or other business entities, including emerging market issuers), mortgage-related and other consumer-related instruments, collateralized debt obligations, including, without limitation, collateralized loan obligations, government and sovereign debt, municipal bonds and other fixed-, variable- and floating-rate income-producing securities of U.S. and foreign issuers, including emerging market issuers. The Fund may invest without limit in investment grade debt securities and may invest without limit in below investment grade debt securities (commonly referred to as "high yield" securities or "junk bonds"), including securities of stressed and distressed issuers. Pacific Investment Management Company LLC ("PIMCO"), the Fund's investment manager, employs an active approach to allocation among multiple credit sectors based on, among other things, market conditions, valuation assessments, economic outlook, credit market trends and other economic factors.

Portfolio Contents. The Fund will invest, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in a portfolio of debt instruments of varying maturities. The Fund may invest without limit in investment grade sovereign debt denominated in the relevant country's local currency with less than 1 year remaining to maturity ("short term investment grade sovereign debt"), including short term investment grade sovereign debt issued by emerging market issuers. The Fund may invest up to 40% of its total assets in securities and instruments that are economically tied to "emerging market" countries other than investments in short term investment grade sovereign debt issued by emerging market issuers, where as noted above there is no limit. The Fund may also invest directly in foreign currencies of emerging market countries. As a matter of fundamental policy, the Fund will normally invest at least 25% of its total assets (i.e., concentrate) in mortgage-related assets issued by government agencies or other governmental entities or by private originators or issuers. The Fund may invest up to 20% of its total assets in common stocks, common shares of other investment companies, such as open-end or closed-end management investment companies and exchange-traded funds, and equity securities of real estate investment trusts. The Fund may invest, either directly or through its wholly-owned and controlled subsidiaries (each a "Subsidiary"), in instruments, such as whole or fractional loans (including consumer, residential or other loans), purchased on an online or alternative lending platform. To the extent consistent with the applicable liquidity requirements for interval funds under Rule 23c-3 of the Investment Company Act of 1940, as amended, the Fund may invest without limit in illiquid securities.

Interval Fund/Repurchase Offers. The Fund is an "interval fund," a type of fund which, in order to provide liquidity to shareholders, has adopted a fundamental investment policy to make quarterly offers to repurchase between 5% and 25% of its outstanding Common Shares at net asset value, reduced by any applicable repurchase fee. Subject to applicable law and approval of the Board of Trustees, for each quarterly repurchase offer, the Fund currently expects to offer to repurchase 5% of the Fund's outstanding Common Shares at net asset value, which is the minimum amount permitted.

Leverage. The Fund may add leverage to its portfolio by utilizing reverse repurchase agreements, credit default swaps, dollar rolls or borrowings, such as through bank loans or commercial paper and/or other credit facilities. The Fund may also enter into transactions other than those noted above that may give rise to a form of leverage including, among others, futures and forward contracts (including foreign currency exchange contracts), credit default swaps, total return swaps and other derivative transactions, loans of portfolio securities, short sales and when-issued, delayed delivery and forward commitment transactions. Although it has no current intention to do so, the Fund may also determine to issue preferred shares or other types of senior securities to add leverage to its portfolio. The Fund intends to utilize reverse repurchase agreements, dollar rolls, borrowings and other forms of leverage opportunistically and may choose to increase or decrease, or eliminate entirely, its use of leverage over time and from time to time based on PIMCO's assessment of the yield curve environment, interest rate trends, market conditions and other factors. By using leverage, the Fund seeks to obtain a higher return for holders of Common Shares than if the Fund did not use leverage. Leveraging is a speculative technique and there are special risks and costs involved. There can be no assurance that a leveraging strategy will be used or that it will be successful during any period in which it is employed.

Investment Manager. The Fund's investment manager is Pacific Investment Management Company LLC ("PIMCO" or the "Investment Manager"). As of September 30, 2018, PIMCO had approximately $1.72 trillion in assets under management.

The Fund's Common Shares are not listed for trading on any national securities exchange. The Fund's Common Shares have no trading market and no market is expected to develop.

An investment in the Fund is not suitable for investors who need certainty about their ability to access all of the money they invest in the short term.

Even though the Fund will make quarterly repurchase offers for its outstanding Common Shares (currently expected to be for 5% per quarter), investors should consider Common Shares of the Fund to be an illiquid investment.

There is no guarantee that you will be able to sell your Common Shares at any given time or in the quantity that you desire.

There is no assurance that the Fund will be able to maintain a certain level of distributions to Common Shareholders.

Institutional Class and Class A Common Shares are offered in this prospectus. Each share class represents an investment in the same portfolio of investments, but each class has its own expense structure and arrangements for shareholder services or distribution, which allows you to choose the class that best fits your situation and eligibility requirements. Class A shares of the Fund are primarily offered and sold to retail investors by broker-dealers which are members of the Financial Industry Regulatory Authority ("FINRA") and which have agreements with the Fund's distributor, but may be made available through other financial firms, including banks and trust companies and to specified benefit plans (as defined below) and other retirement accounts. Only certain investors are eligible to purchase Institutional Class Common Shares. See "Plan of Distribution – Share Classes."

The minimum initial investment for Institutional Class and Class A Common Shares is $1 million per account and $2,500 per account, respectively, except that the minimum investment may be modified for certain financial firms that submit orders on behalf of their customers, the Trustees and certain employees and their extended family members of PIMCO and its affiliates. There is no minimum subsequent investment amount for Institutional Class Common Shares. The minimum subsequent investment amount for Class A Common Shares is $50. See "Plan of Distribution–Purchasing Shares."

Investors should carefully consider the Fund's risks and investment objectives, as an investment in the Fund may not be appropriate for all investors and is not designed to be a complete investment program.

Because of the risks associated with (i) the Fund's ability to purchase and originate loans (including subprime loans) and related instruments, including loans and other instruments purchased on alternative lending platforms, and invest in mortgage-related and other asset-backed instruments, high yield securities, foreign and emerging market securities (and related exposure to foreign currencies), and (ii) the Fund's ability to use leverage, an investment in the Fund should be considered speculative and involving a high degree of risk, including the risk of a substantial loss of investment.

Before making an investment/allocation decision, investors should (i) consider the suitability of this investment with respect to an investor's or a client's investment objective and individual situation and (ii) consider factors such as an investor's or a client's net worth, income, age and risk tolerance.

Investment should be avoided where an investor/client has a short-term investing horizon and/or cannot bear the loss of some or all of their investment. It is possible that investing in the Fund may result in a loss of some or all of the amount invested.

Before buying any of the Fund's Common Shares, you should read the discussion of the principal risks of investing in the Fund in "Principal Risks of the Fund" beginning on page 52 of this prospectus. No assurance can be given that the Fund's investment objectives will be achieved, and you could lose all of your investment in the Fund.

The Fund's Common Shares are sold at a public offering price equal to their net asset value per share, plus a sales charge where applicable. See "Plan of Distribution-Purchasing Shares."

Please read this prospectus carefully before deciding whether to invest and retain it for future reference. It sets forth concisely the information about the Fund that a prospective investor ought to know before investing in the Fund. The Fund has filed with the Securities and Exchange Commission ("SEC") a Statement of Additional Information dated October 31, 2018, as supplemented, containing additional information about the Fund. The Statement of Additional Information is incorporated by reference into this prospectus, which means it is part of this prospectus for legal purposes. The Fund also produces both annual and semi-annual reports that will contain important information about the Fund. Copies of the Statement of Additional Information and the Fund's annual and semi-annual reports, when available, may be obtained upon request, without charge, by calling 844.312.2113 or by writing to the Fund at Regulatory Document Request, 650 Newport Center Drive, Newport Beach, California 92660. You may also call this toll-free telephone number to request other information about the Fund or to make shareholder inquiries. The Statement of Additional Information and most recent annual and semiannual reports are available free of charge on the Fund's website at www.pimco.com. Information on, or accessible through, the Fund's website is not a part of, and is not incorporated into, this prospectus. You may review and copy information about the Fund, including the Statement of Additional Information, at the Securities and Exchange Commission's Public Reference Room in Washington, D.C. You may call the SEC at 1-202-551-8090 for information about the operation of the Public Reference Room. You may also access reports and other information about the Fund on the EDGAR Database on the SEC's Internet site at www.sec.gov. You may get copies of this information, with payment of a duplication fee, by electronic request at the following E-mail address: publicinfo@sec.gov, or by writing the Public Reference Section of the Commission, Washington, D.C. 20549-1520. The table of contents for the Statement of Additional Information appears on page 87 of this prospectus.

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

You should rely only on the information contained or incorporated by reference in this prospectus. The Fund has not authorized anyone to provide you with inconsistent information. If anyone provides you with inconsistent information, you should not assume that the Fund has authorized or verified it. The Fund is not making an offer of these securities in any state where the offer is not permitted. You should not assume that the information contained in this prospectus is accurate as of any date other than the date on the front of this prospectus. The Fund's business, financial condition, results of operations and prospects may have changed since that date.

This is only a summary. This summary may not contain all of the information that you should consider before investing in Common Shares of the Fund. You should review the more detailed information contained in this prospectus and in the Statement of Additional Information. In particular, you should carefully read the risks of investing in the Fund's Common Shares, as discussed under "Principal Risks of the Fund."

PIMCO Flexible Credit Income Fund (the "Fund") is a non-diversified, closed-end management investment company that continuously offers its shares (the "Common Shares"). The Fund is operated as an "interval fund" (as defined below). The Fund currently has two separate classes of Common Shares: Class A and Institutional Class. The Fund commenced operations on February 22, 2017, in connection with its initial public offering of Institutional Class Common Shares. An investment in the Fund may not be appropriate for all investors.

The Fund continuously offers Institutional Class and Class A Common Shares through PIMCO Investments LLC (the "Distributor"), as principal underwriter, on a best efforts basis. Institutional Class Common Shares are sold at their offering price, which is net asset value per share. Unless you are eligible for a waiver, Class A Common Shares are sold at a public offering price equal to their net asset value plus an initial sales charge. The initial sales charge varies depending upon the size of your purchase.

For additional information regarding Institutional Class and Class A Common Shares please see "Plan of Distribution—Share Classes" in this prospectus. The Fund reserves the right to reject a purchase order for any reason. Shareholders will not have the right to redeem their Common Shares. However, as described below, in order to provide some liquidity to shareholders, the Fund will conduct periodic repurchase offers for a portion of its outstanding Common Shares.

The Fund is an "interval fund," a type of fund which, in order to provide liquidity to shareholders, has adopted a fundamental investment policy to make quarterly offers to repurchase between 5% and 25% of its outstanding Common Shares at NAV, reduced by any applicable repurchase fee. Subject to applicable law and approval of the Board of Trustees (the "Board" or "Board of Trustees"), for each quarterly repurchase offer, the Fund currently expects to offer to repurchase 5% of the Fund's outstanding Common Shares at NAV, which is the minimum amount permitted. Written notification of each quarterly repurchase offer (the "Repurchase Offer Notice") will be sent to shareholders at least 21 calendar days before the repurchase request deadline (i.e., the date by which shareholders can tender their Common Shares in response to a repurchase offer) (the "Repurchase Request Deadline"). The Fund's Common Shares are not listed on any securities exchange, and the Fund anticipates that no secondary market will develop for its Common Shares. Accordingly, you may not be able to sell Common Shares when and/or in the amount that you desire. Investors should consider Common Shares of the Fund to be an illiquid investment. Thus, the Common Shares are appropriate only as a long-term investment. In addition, the Fund's repurchase offers may subject the Fund and shareholders to special risks. See "Principal Risks of the Fund — Repurchase Offers Risk."

The Fund does not currently charge a repurchase fee. However, the Fund may charge a repurchase fee of up to 2.00%, which the Fund would retain to help offset non-de minimis estimated costs related to the repurchase incurred by the Fund, directly or indirectly, as a result of repurchasing Common Shares, thus allocating estimated transaction costs to the shareholder whose Common Shares are being repurchased. The Fund may introduce, or modify the amount of, a repurchase fee at any time. The Fund may also waive or reduce a repurchase fee if PIMCO determines that the repurchase is offset by a corresponding purchase or if for other reasons the Fund will not incur transaction costs or will incur reduced transaction costs.

The Fund seeks to achieve its investment objectives by investing, under normal circumstances, across a wide array of global credit sectors, including corporate, mortgage, consumer, emerging market and municipal credit markets, and utilizing a flexible asset allocation strategy among multiple public and private credit sectors in the global credit markets, including corporate debt (including, among other things, fixed-, variable- and floating-rate bonds, loans, convertible and contingent convertible securities and stressed, distressed and defaulted debt securities issued by U.S. or foreign (non-U.S.) corporations or other business entities, including emerging market issuers), mortgage-related and other consumer-related instruments, collateralized debt obligations, including, without limitation, collateralized loan obligations, government and sovereign debt, municipal bonds and other fixed-, variable- and floating-rate income-producing securities of U.S. and foreign issuers, including emerging market issuers. The Fund may invest without limit in investment grade debt securities and may invest without limit in below investment grade debt securities (commonly referred to as "high yield" securities or "junk bonds"), including securities of stressed and distressed issuers. No assurance can be given that the Fund's investment objectives will be achieved, and you could lose all of your investment in the Fund.

Flexible allocation strategy. On behalf of the Fund, PIMCO employs an active approach to allocation among multiple credit sectors based on, among other things, market conditions, valuation assessments, economic

outlook, credit market trends and other economic factors. With PIMCO's macroeconomic analysis as the basis for top-down investment decisions, including geographic and credit sector emphasis, the Fund expects to focus on seeking attractive risk-adjusted returns across multiple credit sectors. PIMCO may choose to focus on particular countries or regions, asset classes, industries and sectors to the exclusion of others at any time and from time to time based on market conditions and other factors. The relative value assessment within credit sectors draws on PIMCO's regional and sector specialist expertise. As a matter of fundamental policy, the Fund will normally invest at least 25% of its total assets (i.e., concentrate) in mortgage-related assets issued by government agencies or other governmental entities or by private originators or issuers.

Investment selection strategies. Once the Fund's top-down, portfolio positioning decisions have been made as described above, PIMCO generally selects particular investments for the Fund by employing a bottom-up, disciplined credit approach which is driven by fundamental, independent research within each sector represented in the Fund, with a focus on identifying securities and other instruments with solid and/or improving fundamentals.

PIMCO utilizes strategies that focus on credit quality analysis, duration management and other risk management techniques. PIMCO attempts to identify, through fundamental research driven by independent credit analysis and proprietary analytical tools, debt obligations and other income-producing securities that provide positive risk-adjusted returns based on its analysis of the issuer's credit characteristics and the position of the security in the issuer's capital structure.

PIMCO also attempts to identify investments that may appreciate in value based on PIMCO's assessment of the issuer's credit characteristics, forecast for interest rates and outlook for particular countries/regions, currencies, industries, sectors and the global economy and bond markets generally.

Credit quality. The Fund may invest without limitation in debt instruments that are, at the time of purchase, rated below investment grade (below Baa3 by Moody's Investors Service, Inc. ("Moody's") or below BBB- by either S&P Global Ratings, a division of The McGraw-Hill Company, Inc. ("S&P") or Fitch, Inc. ("Fitch")), or unrated but determined by PIMCO to be of comparable quality. The Fund may invest in securities of stressed or distressed issuers, which include securities at risk of being in default as to the repayment of principal and/or interest at the time of acquisition by the Fund or that are rated in the lower rating categories by one or more nationally recognized statistical rating organizations (for example, Ca or lower by Moody's or CC or lower by S&P or Fitch) or, if unrated, are determined by PIMCO to be of comparable quality. The Fund may also invest in defaulted securities and debtor-in-possession financings. Debt instruments of below investment grade quality are regarded as having predominantly speculative characteristics with respect to capacity to pay interest and to repay principal, and are commonly referred to as "high yield" securities or "junk bonds." Debt instruments in the lowest investment grade category also may be considered to possess some speculative characteristics. The Fund may, for hedging, investment or leveraging purposes, make use of credit default swaps, which are contracts whereby one party makes periodic payments to a counterparty in exchange for the right to receive from the counterparty a payment equal to the par (or other agreed-upon) value of a referenced debt obligation in the event of a default or other credit event by the issuer of the debt obligation.

Independent credit analysis. PIMCO relies primarily on its own analysis of the credit quality and risks associated with individual debt instruments considered for the Fund, rather than relying exclusively on rating agencies or third-party research. The Fund's portfolio managers utilize this information in an attempt to minimize credit risk and to identify issuers, industries or sectors that they believe are undervalued or that offer potentially attractive yields relative to PIMCO's assessment of their credit characteristics. This aspect of PIMCO's capabilities will be particularly important to the extent that the Fund invests in high yield securities and in securities of emerging market issuers.

Duration management. It is expected that the Fund normally will have a short to intermediate average portfolio duration (i.e., within a zero to eight (0 to 8) year range), as calculated by the Investment Manager, although it may be shorter or longer at any time or from time to time depending on market conditions and other factors. While the Fund seeks to maintain a short to intermediate average portfolio duration, there is no limit on the maturity or duration of any individual security in which the Fund may invest. PIMCO believes that maintaining duration within this range offers flexibility and the opportunity to seek above-average returns while potentially limiting exposure to interest rate volatility and related risks. Duration is a measure used to determine the sensitivity of a security's price to changes in interest rates. For example, the value of a portfolio of fixed income securities with an average duration of eight years would generally be expected to decline by approximately 8% if interest rates rose by one percentage point. Duration differs from the "maturity" of a security (which is the date on which the issuer is obligated to repay the principal amount) in that it considers a security's yield, coupon payments, principal payments and call features in addition to the amount of time until maturity. As the value of a security changes over time, so will its duration. The Fund's duration strategy may entail maintaining a negative average portfolio duration from time to time, which would potentially benefit the portfolio in an environment of rising market interest rates, but would generally adversely impact the portfolio in an environment of falling or neutral market interest rates. PIMCO may also utilize certain strategies including, without limitation, investments in structured notes or interest rate futures contracts or swap, cap, floor or collar transactions, for the purpose of reducing the interest rate sensitivity of the Fund's portfolio, although there is no assurance that it will do so or that such strategies will be successful if used.

Portfolio contents. The Fund will invest, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in a portfolio of debt instruments of varying maturities (the "80% policy"). The Fund will not change its 80% policy unless the Fund provides shareholders with the notice required by Rule 35d-1 under the Investment Company Act of 1940, as it may be amended from time to time (the "1940 Act").

backed securities, collateralized bond obligations ("CBOs"), collateralized loan obligations ("CLOs"), other collateralized debt obligations ("CDOs") and other similarly structured securities); corporate debt securities of U.S. and non-U.S. issuers, including convertible and contingent convertible securities and corporate commercial paper; municipal securities and other debt securities issued by states or local governments and their agencies, authorities and other government-sponsored enterprises, including taxable municipal securities; obligations of foreign governments or their sub-divisions, agencies and government sponsored enterprises and obligations of international agencies and supranational entities; securities issued or guaranteed by the U.S. Government, its agencies or government-sponsored enterprises ("U.S. Government Securities"); bank loans (including, among others, senior loans, mezzanine loans, delayed funding loans, revolving credit facilities and loan participations and assignments); loans held and/or originated by private financial institutions, including commercial and residential mortgage loans, corporate loans and consumer loans (such as credit card receivables, automobile loans and student loans) ("private credit assets"); payment-in-kind securities; zero-coupon bonds; inflation-indexed bonds issued by both governments and corporations; structured notes, including hybrid or indexed securities; catastrophe bonds and other event-linked bonds; credit-linked notes; preferred securities; convertible debt securities (i.e., debt securities that may be converted at either a stated price or stated rate into underlying shares of common stock), including synthetic convertible debt securities (i.e., instruments created through a combination of separate securities that possess the two principal characteristics of a traditional convertible security, such as an income-producing security and the right to acquire an equity security); and bank certificates of deposit, fixed time deposits and bankers' acceptances. The rate of interest on an income-producing instrument may be fixed, floating or variable. At any given time and from time to time substantially all of the Fund's portfolio may consist of below investment grade securities. The Fund may invest in debt securities of stressed and distressed issuers as well as in defaulted securities and debtor-in-possession financings. The Fund may invest in any level of the capital structure of an issuer of mortgage-backed or asset-backed instruments, including the equity or "first loss" tranche. The Fund's investments in derivatives and other synthetic instruments that have economic characteristics similar to debt instruments will be counted toward satisfaction of the 80% policy. For purposes of the Fund's 80% policy, the Fund values its derivative instruments based on their market value.

The Fund may seek to originate loans, including, without limitation, residential and/or commercial real estate or mortgage-related loans, consumer loans or other types of loans, which may be in the form of whole loans, secured and unsecured notes, senior and second lien loans, mezzanine loans or similar investments. The Fund may originate loans to corporations and/or other legal entities and individuals, including foreign (non-U.S.) entities and individuals. Such borrowers may have credit ratings that are determined by one or more nationally recognized statistical rating organizations ("NRSROs") or PIMCO to be below investment grade. The loans the Fund originates may vary in maturity and/or duration. The Fund is not limited in the amount, size or type of loans it may originate, including with respect to a single borrower or with respect to borrowers that are determined to be below investment grade, other than pursuant to any applicable law. The Fund's origination of loans may also be limited by the Fund's intention to qualify as a regulated investment company.

The Fund may invest without limit in securities of U.S. issuers and without limit in securities of foreign (non-U.S.) issuers, securities traded principally outside of the United States, and securities denominated in currencies other than the U.S. dollar. The Fund may invest without limit in investment grade sovereign debt denominated in the relevant country's local currency with less than 1 year remaining to maturity ("short term investment grade sovereign debt"), including short term investment grade sovereign debt issued by emerging market issuers. The Fund may invest up to 40% of its total assets in securities and instruments that are economically tied to "emerging market" countries other than investments in short term investment grade sovereign debt issued by emerging market issuers, where as noted above there is no limit. The Fund may also invest directly in foreign currencies, including currencies of emerging market countries.

As a matter of fundamental policy, the Fund will normally invest at least 25% of its total assets (i.e., concentrate) in mortgage-related assets issued by government agencies or other governmental entities or by private originators or issuers.

The Fund may, but is not required to, utilize various derivative strategies (both long and short positions) involving the purchase or sale of futures and forward contracts (including foreign currency exchange contracts), call and put options, credit default swaps, total return swaps, basis swaps and other swap agreements and other derivative instruments for investment purposes, leveraging purposes or in an attempt to hedge against market, credit, interest rate, currency and other risks in the portfolio. The Fund may purchase and sell securities on a when-issued, delayed delivery or forward commitment basis and may engage in short sales.

The Fund may invest up to 20% of its total assets in common stocks, common shares of other investment companies, such as open-end or closed-end management investment companies and exchange-traded funds ("ETFs"), and equity securities of real estate investment trusts ("REITs"). For these purposes, common stocks the Fund has received through the conversion of a convertible security held by the Fund or in connection with the restructuring of a debt security will not count towards this 20% limit. The Fund may invest in securities that have not been registered for public sale in the U.S. or relevant non-U.S. jurisdiction, including without limitation securities eligible for purchase and sale pursuant to Rule 144A under the Securities Act of 1933, as amended (the "Securities Act"), or relevant provisions of applicable non-U.S. law, and other securities issued in private placements. The Fund may invest in securities of companies with any market capitalization, including small, medium and large capitalizations.

The Fund may invest, either directly or through its wholly-owned and controlled Subsidiaries, in instruments, such as whole or fractional loans (including consumer, residential or other loans), purchased on an online or alternative lending platform.

within seven days in the ordinary course of business at approximately the value at which the Fund has valued the securities).

The Fund may make investments in debt instruments and other securities directly or through one or more Subsidiaries. Each Subsidiary may invest, for example, in whole loans or in shares, certificates, notes or other securities representing the right to receive principal and interest payments due on fractions of whole loans or pools of whole loans, or any other security or other instrument that the Fund may hold directly. References herein to the Fund include references to a Subsidiary in respect of the Fund's investment exposure. The allocation of the Fund's portfolio in a Subsidiary will vary over time and might not always include all of the different types of investments described herein. The Fund will treat a Subsidiary's assets as assets of the Fund for purposes of determining compliance with various provisions of the 1940 Act applicable to the Fund, including those relating to investment policies (Section 8), capital structure and leverage (Section 18) and affiliated transactions and custody (Section 17).

The Fund may add leverage to its portfolio by utilizing reverse repurchase agreements, credit default swaps, dollar rolls or borrowings, such as through bank loans or commercial paper and/or other credit facilities. The Fund may also enter into transactions other than those noted above that may give rise to a form of leverage including, among others, futures and forward contracts (including foreign currency exchange contracts), credit default swaps, total return swaps and other derivative transactions, loans of portfolio securities, short sales and when-issued, delayed delivery and forward commitment transactions. Although it has no current intention to do so, the Fund may also determine to issue preferred shares or other types of senior securities to add leverage to its portfolio. The Fund intends to utilize reverse repurchase agreements, dollar rolls, borrowings and other forms of leverage opportunistically and may choose to increase or decrease, or eliminate entirely, its use of leverage over time and from time to time based on PIMCO's assessment of the yield curve environment, interest rate trends, market conditions and other factors.

The net proceeds the Fund obtains from reverse repurchase agreements, credit default swaps, dollar rolls or other forms of leverage utilized will be invested in accordance with the Fund's investment objectives and policies as described in this prospectus. So long as the rate of return, net of applicable Fund expenses, on the debt obligations and other investments purchased by the Fund exceeds the costs to the Fund of the leverage it utilizes, the investment of the Fund's assets attributable to leverage will generate more income than will be needed to pay the costs of the leverage. If so, and all other things being equal, the excess may be used to pay higher dividends to holders of Common Shares ("Common Shareholders") than if the Fund were not so leveraged.

The 1940 Act generally prohibits the Fund from engaging in most forms of leverage (including the use of reverse repurchase agreements, dollar rolls, bank loans, commercial paper or other credit facilities, credit default swaps, total return swaps and other derivative transactions, loans of portfolio securities, short sales and when-issued, delayed delivery and forward commitment transactions, to the extent that these instruments are not covered as described below) unless immediately after the issuance of the leverage the Fund has satisfied the asset coverage test with respect to senior securities representing indebtedness prescribed by the 1940 Act; that is, the value of the Fund's total assets less all liabilities and indebtedness not represented by senior securities (for these purposes, "total net assets") is at least 300% of the senior securities representing indebtedness (effectively limiting the use of leverage through senior securities representing indebtedness to 33⅓% of the Fund's total net assets, including assets attributable to such leverage). In addition, the Fund is not permitted to declare any cash dividend or other distribution on Common Shares unless, at the time of such declaration, this asset coverage test is satisfied. The Fund may (but is not required to) cover its commitments under reverse repurchase agreements, dollar rolls, derivatives and certain other instruments by the segregation of liquid assets, or by entering into offsetting transactions or owning positions covering its obligations. To the extent that the Fund maintains segregated assets or otherwise covers certain of these instruments, they will not be considered "senior securities" under the 1940 Act and therefore will not be subject to the 1940 Act 300% asset coverage requirement otherwise applicable to forms of indebtedness used by the Fund. However, reverse repurchase agreements, dollar rolls and other such instruments, even if covered, may represent a form of economic leverage and create special risks. The use of these forms of leverage increases the volatility of the Fund's investment portfolio and could result in larger losses to Common Shareholders than if these strategies were not used. To the extent that the Fund engages in borrowings, it may prepay a portion of the principal amount of the borrowing to the extent necessary in order to maintain the required asset coverage. Failure to maintain certain asset coverage requirements could result in an event of default.

Leveraging is a speculative technique and there are special risks and costs involved. There is no assurance that the Fund will utilize reverse repurchase agreements, credit default swaps, dollar rolls or borrowings, issue preferred shares or utilize any other forms of leverage (such as the use of derivatives strategies). If used, there can be no assurance that the Fund's leveraging strategies will be successful or result in a higher yield on your Common Shares. When leverage is used, the net asset value of the Common Shares and the yield to Common Shareholders will be more volatile. In addition, interest and other expenses borne by the Fund with respect to its use of reverse repurchase agreements, dollar rolls, borrowings or any other forms of leverage are borne by the Common Shareholders and result in a reduction of the net asset value of the Common Shares. In addition, because the fees received by the Investment Manager are based on the average daily total managed assets of the Fund (including any assets attributable to any reverse repurchase agreements, dollar rolls, borrowings and any preferred shares that may be outstanding, if issued), the Investment Manager has a financial incentive for the Fund to use certain forms of leverage (e.g., reverse repurchase agreements, dollar rolls, borrowings and preferred shares), which may create a conflict of interest between the Investment Manager, on the one hand, and the Common Shareholders, on the other hand.

The SEC has issued a proposed rule relating to a registered investment company's use of derivatives and related instruments that, if adopted, could potentially require the Fund to reduce its use of leverage and/or observe more stringent asset coverage and related requirements than are currently

imposed by the 1940 Act, which could adversely affect the value or performance of the Fund and the Common Shares.

Please see "Leverage," "Principal Risks of the Fund—Leverage Risk" and "Principal Risks of the Fund—Segregation and Coverage Risk" for additional information regarding leverage and related risks.

PIMCO serves as the Investment Manager for the Fund. Subject to the supervision of the Board of Trustees of the Fund, PIMCO is responsible for managing the investment activities of the Fund and the Fund's business affairs and other administrative matters. Dan Ivascyn, Mark Kiesel, Alfred Murata, Marc Seidner, Christian Stracke, and Eve Tournier are jointly and primarily responsible for the day-to-day management of the Fund.

PIMCO is located at 650 Newport Center Drive, Newport Beach, CA 92660. Organized in 1971, PIMCO provides investment management and advisory services to private accounts of institutional and individual clients and to registered investment companies. PIMCO is a majority-owned indirect subsidiary of Allianz SE, a publicly traded European insurance and financial services company. As of September 30, 2018, PIMCO had approximately $1.72 trillion in assets under management.

The Fund intends to distribute substantially all of its net investment income to shareholders in the form of dividends. The Fund intends to declare income dividends daily and distribute them quarterly to shareholders of record. In addition, the Fund intends to distribute any net capital gains it earns from the sale of portfolio securities to shareholders no less frequently than annually. Net short-term capital gains may be paid more frequently.

Unless shareholders specify otherwise, dividends will be reinvested in Common Shares of the Fund in accordance with the Fund's dividend reinvestment plan. The Fund may pay distributions from sources that may not be available in the future and that are unrelated to the Fund's performance, such as from offering proceeds and/or borrowings. See "Distributions" and "Dividend Reinvestment Plan."

PIMCO Investments LLC, an affiliate of PIMCO, serves as the Fund's principal underwriter and distributor. State Street Bank and Trust Company serves as the primary custodian of the Fund's assets and also provides certain fund accounting, sub-administrative and compliance services to the Investment Manager on behalf of the Fund. UMB Bank, n.a. serves as a custodian of the Fund for the purpose of processing investor subscriptions and repurchases. DST Systems, Inc. serves as the Fund's transfer agent and dividend disbursement agent. Wells Fargo Bank, N.A., serves as a custodian of certain assets held by the Fund's Subsidiaries.

The Fund's Common Shares are not listed for trading on any securities exchange. There is currently no secondary market for its Common Shares and the Fund does not expect any secondary market to develop for its Common Shares. Shareholders of the Fund are not able to have their Common Shares redeemed or otherwise sell their Common Shares on a daily basis because the Fund is an unlisted closed-end fund. In order to provide liquidity to shareholders, the Fund is structured as an "interval fund" and conducts periodic repurchase offers for a portion of its outstanding Common Shares, as described herein. Investors should consider Common Shares of the Fund to be an illiquid investment. An investment in the Fund is suitable only for long-term investors who can bear the risks associated with the limited liquidity of the Common Shares. Investors should consider their investment goals, time horizons and risk tolerance before investing in the Fund.

An investment in the Fund involves a considerable amount of risk. It is possible that you will lose money. An investment in the Fund is suitable only for investors who can bear the risks associated with the limited liquidity of the Common Shares and should be viewed as a long-term investment. Before making your investment decision, you should (i) consider the suitability of this investment with respect to your investment objectives and personal financial situation and (ii) consider factors such as your personal net worth, income, age, risk tolerance and liquidity needs. An investment in the Fund should not be viewed as a complete investment program.

The Fund is a non-diversified, closed-end management investment company with a limited history of operations and is designed for long-term investors and not as a trading vehicle.

The market price of securities owned by the Fund may go up or down, sometimes rapidly or unpredictably. Securities may decline in value due to factors affecting securities markets generally or particular industries represented in the securities markets. The value of a security may decline due to general market conditions that are not specifically related to a particular company, such as real or perceived adverse economic conditions, changes in the general outlook for corporate earnings, changes in interest or currency rates, adverse changes to credit markets or adverse investor sentiment generally. The value of a security may also decline due to factors that affect a particular industry or industries, such as labor shortages or increased production costs and competitive conditions within an industry. During a general downturn in the securities markets, multiple asset classes may decline in value simultaneously. Equity securities generally have greater price volatility than fixed-income securities. Credit ratings downgrades may also negatively affect securities held by the Fund. Even when markets perform well, there is no assurance that the investments held by the Fund will increase in value along with the broader market. In addition, market risk includes the risk that geopolitical events will disrupt the economy on a national or global level. For instance, terrorism, market manipulation, government defaults, government shutdowns, political changes or diplomatic developments, and natural/environmental disasters can all negatively impact the securities markets, which could cause the Fund to lose value. Any market disruptions could also prevent the Fund from executing advantageous investment decisions in a timely manner. To the extent the Fund focuses its investments in a region enduring geopolitical

market disruption, it will face higher risks of loss. Thus, investors should closely monitor current market conditions to determine whether the Fund meets their individual financial needs and tolerance for risk.

Current market conditions may pose heightened risks with respect to funds that invest in fixed-income securities. As discussed more under "Principal Risks of the Fund—Interest Rate Risk," interest rates in the U.S. are near historically low levels. Thus, the Fund currently faces a heightened level of interest rate risk, especially since the Federal Reserve Board has ended its quantitative easing program and has begun, and may continue, to raise interest rates. To the extent the Federal Reserve Board continues to raise interest rates, there is a risk that rates across the financial system may rise.

Exchanges and securities markets may close early, close late or issue trading halts on specific securities, which may result in, among other things, the Fund being unable to buy or sell certain securities or financial instruments at an advantageous time or accurately price its portfolio investments.

The Fund's investment performance depends upon how its assets are allocated and reallocated. A principal risk of investing in the Fund is that PIMCO may make less than optimal or poor asset allocation decisions. PIMCO employs an active approach to allocation among multiple credit sectors, but there is no guarantee that such allocation techniques will produce the desired results. It is possible that PIMCO will focus on an investment that performs poorly or underperforms other investments under various market conditions. You could lose money on your investment in the Fund as a result of these allocation decisions.

The value of a security may decline for a number of reasons that directly relate to the issuer, such as management performance, financial leverage and reduced demand for the issuer's goods or services, as well as the historical and prospective earnings of the issuer and the value of its assets. A change in the financial condition of a single issuer may affect securities markets as a whole. These risks can apply to the Common Shares issued by the Fund and to the issuers of securities and other instruments in which the Fund invests.

As described under "Periodic Repurchase Offers" above, the Fund is an "interval fund" and, in order to provide liquidity to shareholders, the Fund, subject to applicable law, conducts quarterly repurchase offers of the Fund's outstanding Common Shares at NAV, subject to approval of the Board. In all cases such repurchases will be for at least 5% and not more than 25% of its outstanding Common Shares at NAV, pursuant to Rule 23c-3 under the 1940 Act. The Fund currently expects to conduct quarterly repurchase offers for 5% of its outstanding Common Shares under ordinary circumstances. The Fund believes that these repurchase offers are generally beneficial to the Fund's shareholders, and repurchases generally will be funded from available cash or sales of portfolio securities. However, repurchase offers and the need to fund repurchase obligations may affect the ability of the Fund to be fully invested or force the Fund to maintain a higher percentage of its assets in liquid investments, which may harm the Fund's investment performance. Moreover, diminution in the size of the Fund through repurchases may result in untimely sales of portfolio securities (with associated imputed transaction costs, which may be significant), and may limit the ability of the Fund to participate in new investment opportunities or to achieve its investment objectives. The Fund may accumulate cash by holding back (i.e., not reinvesting) payments received in connection with the Fund's investments. The Fund believes that payments received in connection with the Fund's investments will generate sufficient cash to meet the maximum potential amount of the Fund's repurchase obligations. If at any time cash and other liquid assets held by the Fund are not sufficient to meet the Fund's repurchase obligations, the Fund intends, if necessary, to sell investments. If, as expected, the Fund employs investment leverage, repurchases of Common Shares would compound the adverse effects of leverage in a declining market. In addition, if the Fund borrows to finance repurchases, interest on that borrowing will negatively affect Common Shareholders who do not tender their Common Shares by increasing the Fund's expenses and reducing any net investment income. If a repurchase offer is oversubscribed, the Board of Trustees of the Fund may determine to increase the amount repurchased by up to 2% of the Fund's outstanding shares as of the date of the Repurchase Request Deadline. In the event that the Board of Trustees of the Fund determines not to repurchase more than the repurchase offer amount, or if shareholders tender more than the repurchase offer amount plus 2% of the Fund's outstanding shares as of the date of the Repurchase Request Deadline, the Fund will repurchase the Common Shares tendered on a pro rata basis, and shareholders will have to wait until the next repurchase offer to make another repurchase request. As a result, shareholders may be unable to liquidate all or a given percentage of their investment in the Fund during a particular repurchase offer. Some shareholders, in anticipation of proration, may tender more Common Shares than they wish to have repurchased in a particular quarter, thereby increasing the likelihood that proration will occur. The NAV of Common Shares tendered in a repurchase offer may decline between the Repurchase Request Deadline and the date on which the NAV for tendered Common Shares is determined. In addition, the repurchase of Common Shares by the Fund may be a taxable event to shareholders.

The Fund is subject to management risk because it is an actively managed investment portfolio. PIMCO and each individual portfolio manager will apply investment techniques and risk analysis in making investment decisions for the Fund, but there can be no guarantee that these decisions will produce the desired results. Certain securities or other instruments in which the Fund seeks to invest may not be available in the quantities desired. In addition, regulatory restrictions, actual or potential conflicts of interest or other considerations may cause PIMCO to restrict or prohibit participation in certain investments. In such circumstances, PIMCO or the individual portfolio managers may determine to purchase other securities or instruments as substitutes. Such substitute securities or instruments may not perform as intended, which could result in losses to the Fund. To the extent the Fund employs strategies targeting perceived pricing inefficiencies, arbitrage strategies or similar strategies, it is subject to the risk that the pricing or valuation of the securities and instruments involved in such strategies may change unexpectedly, which may result in reduced returns or losses to the Fund. Additionally, legislative, regulatory, or tax restrictions,

policies or developments may affect the investment techniques available to PIMCO and each individual portfolio manager in connection with managing the Fund and may also adversely affect the ability of the Fund to achieve its investment objectives. There also can be no assurance that all of the personnel of PIMCO will continue to be associated with PIMCO for any length of time. The loss of the services of one or more key employees of PIMCO could have an adverse impact on the Fund's ability to realize its investment objectives.

In addition, the Fund may rely on various third-party sources to calculate its net asset value. As a result, the Fund is subject to certain operational risks associated with reliance on service providers and service providers' data sources. In particular, errors or systems failures and other technological issues may adversely impact the Fund's calculations of its net asset value, and such net asset value calculation issues may result in inaccurately calculated net asset values, delays in net asset value calculation and/or the inability to calculate net asset values over extended periods. The Fund may be unable to recover any losses associated with such failures.

Interest rate risk is the risk that fixed income securities and other instruments in the Fund's portfolio will decline in value because of a change in interest rates. As nominal interest rates rise, the value of certain fixed income securities held by the Fund is likely to decrease. A nominal interest rate can be described as the sum of a real interest rate and an expected inflation rate. Interest rate changes can be sudden and unpredictable, and the Fund may lose money as a result of movements in interest rates. The Fund may not be able to hedge against changes in interest rates or may choose not to do so for cost or other reasons. In addition, any hedges may not work as intended.

A wide variety of factors can cause interest rates to rise (e.g., central bank monetary policies, inflation rates, general economic conditions). This risk may be particularly acute in the current market environment because market interest rates are currently near historically low levels. Thus, the Fund currently faces a heightened level of interest rate risk, especially since the Federal Reserve Board has ended its quantitative easing program and has begun, and may continue, to raise interest rates. To the extent the Federal Reserve Board continues to raise interest rates, there is a risk that rates across the financial system may rise.

Fixed income securities with longer durations tend to be more sensitive to changes in interest rates, usually making them more volatile than securities with shorter durations. Duration is a measure used to determine the sensitivity of a security's price to changes in interest rates that incorporates a security's yield, coupon, final maturity and call features, among other characteristics. Duration is useful primarily as a measure of the sensitivity of a fixed income security's market price to interest rate (i.e., yield) movements. All other things remaining equal, for each one percentage point increase in interest rates, the value of a portfolio of fixed income investments would generally be expected to decline by one percent for every year of the portfolio's average duration above zero. For example, the value of a portfolio of fixed income securities with an average duration of eight years would generally be expected to decline by approximately 8% if interest rates rose by one percentage point.

Variable and floating rate securities generally are less sensitive to interest rate changes but may decline in value if their interest rates do not rise as much, or as quickly, as interest rates in general. Conversely, floating rate securities will not generally increase in value if interest rates decline. Inverse floating rate securities may decrease in value if interest rates increase. Inverse floating rate securities may also exhibit greater price volatility than a fixed rate obligation with similar credit quality. When the Fund holds variable or floating rate securities, a decrease (or, in the case of inverse floating rate securities, an increase) in market interest rates will adversely affect the income received from such securities and the NAV of the Fund's shares.

During periods of very low or negative interest rates, the Fund may be unable to maintain positive returns. Interest rates in the United States and many parts of the world, including certain European countries, are at or near historically low levels. Very low or negative interest rates may magnify interest rate risk. Changing interest rates, including rates that fall below zero, may have unpredictable effects on markets, may result in heightened market volatility and may detract from Fund performance to the extent the Fund is exposed to such interest rates.

Measures such as average duration may not accurately reflect the true interest rate sensitivity of the Fund. This is especially the case if the Fund consists of securities with widely varying durations. Therefore, if the Fund has an average duration that suggests a certain level of interest rate risk, the Fund may in fact be subject to greater interest rate risk than the average would suggest. This risk is greater to the extent the Fund uses leverage or derivatives in connection with the management of the Fund.

Convexity is an additional measure used to understand a security's or Fund's interest rate sensitivity. Convexity measures the rate of change of duration in response to changes in interest rates. With respect to a security's price, a larger convexity (positive or negative) may imply more dramatic price changes in response to changing interest rates. Convexity may be positive or negative. Negative convexity implies that interest rate increases result in increased duration, meaning increased sensitivity in prices in response to rising interest rates. Thus, securities with negative convexity, which may include bonds with traditional call features and certain mortgage-backed securities, may experience greater losses in periods of rising interest rates. Accordingly, if the Fund holds such securities, the Fund may be subject to a greater risk of losses in periods of rising interest rates.

Rising interest rates may result in a decline in value of the Fund's fixed income investments and in periods of volatility. Further, while U.S. bond markets have steadily grown over the past three decades, dealer "market making" ability has remained relatively stagnant. As a result, dealer inventories of certain types of bonds and similar instruments, which provide a core indication of the ability of financial intermediaries to "make markets," are at or near historic lows in relation to market size. Because market makers provide stability to a market through their intermediary services, the significant reduction in dealer inventories could potentially lead to decreased liquidity and increased volatility in the fixed income markets. Such issues may be exacerbated during periods of economic uncertainty. All of these factors, collectively and/or individually, could cause the Fund to lose value.

The Fund could lose money if the issuer or guarantor of a debt security (including a security purchased with securities lending collateral), or the counterparty to a derivatives contract, repurchase agreement or a loan of portfolio securities, is unable or unwilling, or is perceived (whether by market participants, rating agencies, pricing services or otherwise) as unable or unwilling, to make timely principal and/or interest payments, or to otherwise honor its obligations. The downgrade of the credit of a security held by the Fund may decrease its value. Securities are subject to varying degrees of credit risk, which are often reflected in credit ratings. Measures such as average credit quality may not accurately reflect the true credit risk of the Fund. This is especially the case if the Fund holds securities with widely varying credit ratings. Therefore, if the Fund has an average credit rating that suggests a certain credit quality, the Fund may in fact be subject to greater credit risk than the average would suggest. This risk is greater to the extent the Fund uses leverage or derivatives in connection with the management of the Fund. Municipal bonds are subject to the risk that litigation, legislation or other political events, local business or economic conditions, or the bankruptcy of the issuer could have a significant effect on an issuer's ability to make payments of principal and/or interest.

The market value of corporate debt securities generally may be expected to rise and fall inversely with interest rates. The value of intermediate- and longer-term corporate debt securities normally fluctuates more in response to changes in interest rates than does the value of shorter-term corporate debt securities. The market value of a corporate debt security also may be affected by factors directly relating to the issuer, such as investors' perceptions of the creditworthiness of the issuer, the issuer's financial performance, perceptions of the issuer in the market place, performance of management of the issuer, the issuer's capital structure and use of financial leverage and demand for the issuer's goods and services. Certain risks associated with investments in corporate debt securities are described elsewhere in this prospectus in further detail. There is a risk that the issuers of corporate debt securities may not be able to meet their obligations on interest or principal payments at the time called for by an instrument. The Fund may invest in below investment grade corporate bonds, often referred to as "high yield" securities or "junk bonds." High yield corporate bonds are often high risk and have speculative characteristics. High yield corporate bonds may be particularly susceptible to adverse issuer-specific developments. High yield corporate bonds are subject to the risks described under "Principal Risks of the Fund—High Yield Securities Risk." In addition, certain corporate debt securities may be highly customized and as a result may be subject to, among others, liquidity and valuation/pricing transparency risks.

The Fund may invest in a variety of mortgage-related and other asset-backed instruments issued by government agencies or other governmental entities or by private originators or issuers.

The mortgage-related assets in which the Fund may invest include, but are not limited to, any security, instrument or other asset that is related to U.S. or non-U.S. mortgages, including those issued by private originators or issuers, or issued or guaranteed as to principal or interest by the U.S. Government or its agencies or instrumentalities or by non-U.S. governments or authorities, such as, without limitation, assets representing interests in, collateralized or backed by, or whose values are determined in whole or in part by reference to any number of mortgages or pools of mortgages or the payment experience of such mortgages or pools of mortgages, including Real Estate Mortgage Investment Conduits ("REMICs"), which could include resecuritizations of REMICs ("Re-REMICs"), mortgage pass-through securities, inverse floaters, collateralized mortgage obligations, collateralized loan obligations, multiclass pass-through securities, private mortgage pass-through securities, stripped mortgage securities (generally interest-only and principal-only securities), mortgage-related asset backed securities and mortgage-related loans (including through participations, assignments, originations and whole loans), including commercial and residential mortgage loans. Exposures to mortgage-related assets through derivatives or other financial instruments will be considered investments in mortgage-related assets.

The Fund may also invest in other types of asset-backed securities, including CDOs, CBOs and CLOs and other similarly structured securities See "The Fund's Investment Objectives and Strategies—Portfolio Contents and Other Information—Mortgage-Related and Other Asset-Backed Instruments" in this prospectus and "Investment Objectives and Policies—Mortgage-Related and Other Asset-Backed Instruments" in the Statement of Additional Information for a description of the various mortgage-related and other asset-backed instruments in which the Fund may invest and their related risks.

Mortgage-related and other asset-backed instruments represent interests in "pools" of mortgages or other assets such as consumer loans or receivables held in trust and often involve risks that are different from or possibly more acute than risks associated with other types of debt instruments. Generally, rising interest rates tend to extend the duration of fixed rate mortgage-related assets, making them more sensitive to changes in interest rates. As a result, in a period of rising interest rates, the Fund may exhibit additional volatility since individual mortgage holders are less likely to exercise prepayment options, thereby putting additional downward pressure on the value of these securities and potentially causing the Fund to lose money. This is known as extension risk. Mortgage-backed securities can be highly sensitive to rising interest rates, such that even small movements can cause the Fund to lose value. Mortgage-backed securities, and in particular those not backed by a government guarantee, are subject to credit risk. When interest rates decline, borrowers may pay off their mortgages sooner than expected. This can reduce the returns of the Fund because the Fund may have to reinvest that money at the lower prevailing interest rates. The Fund's investments in other asset-backed instruments are subject to risks similar to those associated with mortgage-related assets, as well as additional risks associated with the nature of the assets and the servicing of those assets. Payment of principal and interest on asset-backed instruments

may be largely dependent upon the cash flows generated by the assets backing the instruments, and asset-backed instruments may not have the benefit of any security interest in the related assets. See "Principal Risks of the Fund—Mortgage Market/Subprime Risk."

The Fund may also invest in the residual or equity tranches of mortgage-related and other asset-backed instruments, which may be referred to as subordinate mortgage-backed or asset-backed instruments and interest-only mortgage-backed or asset-backed instruments. Subordinate mortgage-backed or asset-backed instruments are paid interest only to the extent that there are funds available to make payments. To the extent the collateral pool includes a large percentage of delinquent loans, there is a risk that interest payment on subordinate mortgage-backed or asset-backed instruments will not be fully paid. The Fund expects that investments in subordinate mortgage-backed and other asset-backed instruments will be subject to risks arising from delinquencies and foreclosures, thereby exposing its investment portfolio to potential losses. Subordinate mortgage-backed and other asset-backed instruments are also subject to greater credit risk than those mortgage-backed or other asset-backed securities that are more highly rated.

There are multiple tranches of mortgage-backed and asset-backed instruments, offering investors various maturity and credit risk characteristics. Tranches are categorized as senior, mezzanine, and subordinated/equity or "first loss," according to their degree of risk. The most senior tranche of a mortgage-backed or asset-backed instrument has the greatest collateralization and pays the lowest interest rate. If there are defaults or the collateral otherwise underperforms, scheduled payments to senior tranches take precedence over those of mezzanine tranches, and scheduled payments to mezzanine tranches take precedence over those to subordinated/equity tranches. Lower tranches represent lower degrees of credit quality and pay higher interest rates intended to compensate for the attendant risks. The return on the lower tranches is especially sensitive to the rate of defaults in the collateral pool. The lowest tranche (i.e. the "equity" or "residual" tranche) specifically receives the residual interest payments (i.e., money that is left over after the higher tranches have been paid and expenses of the issuing entities have been paid) rather than a fixed interest rate. Because an investment in the residual or equity tranche of a mortgage-related or other asset-backed instrument will be the first to bear losses incurred by such instrument, these investments may involve a significantly greater degree of risk than investments in other tranches of a mortgage-related or other asset-backed instrument.

There are no direct or indirect government or agency guarantees of payments in pools created by non-governmental issuers. Privately-issued mortgage-related securities are also not subject to the same underwriting requirements for the underlying mortgages that are applicable to those mortgage-related securities that have a government or government-sponsored entity guarantee.

Privately-issued mortgage-related securities are not traded on an exchange and there may be a limited market for the securities, especially when there is a perceived weakness in the mortgage and real estate market sectors. Without an active trading market, mortgage-related securities held in the Fund's portfolio may be particularly difficult to value because of the complexities involved in assessing the value of the underlying mortgage loans.

The mortgage markets in the United States and in various foreign countries have experienced extreme difficulties in the past that adversely affected the performance and market value of certain mortgage-related investments. Should similar market events occur, delinquencies and losses on residential and commercial mortgage loans (especially subprime and second-lien mortgage loans) may increase again, and a decline in or flattening of housing and other real property values may exacerbate such delinquencies and losses. Borrowers with adjustable rate mortgage loans are more sensitive to changes in interest rates, which affect their monthly mortgage payments, and may be unable to secure replacement mortgages at comparably low interest rates. Also, a number of mortgage loan originators have experienced serious financial difficulties or bankruptcy. Owing largely to the foregoing, reduced investor demand for mortgage loans and mortgage-related securities and increased investor yield requirements have caused limited liquidity in the secondary market for certain mortgage-related securities, which can adversely affect the market value of mortgage-related securities. It is possible that such limited liquidity in such secondary markets could continue or worsen.

In general, lower rated debt securities carry a greater degree of risk that the issuer will lose its ability to make interest and principal payments, which could have a negative effect on the NAV of the Fund's Common Shares or Common Share dividends. Securities of below investment grade quality are regarded as having predominantly speculative characteristics with respect to capacity to pay interest and repay principal, and are commonly referred to as "high yield" securities or "junk bonds." High yield securities involve a greater risk of default and their prices are generally more volatile and sensitive to actual or perceived negative developments, such as a decline in the issuer's revenues or revenues of underlying borrowers or a general economic downturn, than are the prices of higher grade securities. Debt securities in the lowest investment grade category also may be considered to possess some speculative characteristics by certain rating agencies. The Fund may purchase distressed securities that are in default or the issuers of which are in bankruptcy, which involve heightened risks. See "Principal Risks of the Fund—Distressed and Defaulted Securities Risk." An economic downturn could severely affect the ability of issuers (particularly those that are highly leveraged) to service their debt obligations or to repay their obligations upon maturity. Lower-rated securities are generally less liquid than higher-rated securities, which may have an adverse effect on the Fund's ability to dispose of a particular security. For example, under adverse market or economic conditions, the secondary market for below investment grade securities could contract further, independent of any specific adverse changes in the condition of a particular issuer, and certain securities in the Fund's portfolio may become illiquid or less liquid. As a result, the Fund could find it more difficult to sell these securities or may be able to sell these securities only at prices lower than if such securities were widely traded. See "Principal Risks of the Fund—Liquidity Risk." To the extent the

Fund focuses on below investment grade debt obligations, PIMCO's capabilities in analyzing credit quality and associated risks will be particularly important, and there can be no assurance that PIMCO will be successful in this regard. See "The Fund's Investment Objectives and Strategies—Portfolio Contents—High Yield Securities" for additional information.

Analysis of creditworthiness may be more complex for issuers of high yield securities than for issuers of higher quality debt securities. In addition, a rating agency or PIMCO may downgrade its assessment of the credit characteristics associated with a particular security or instrument after it is purchased and held by the Fund. Due to the risks involved in investing in high yield securities, an investment in the Fund should be considered speculative.

As noted above, the Fund may invest in the debt securities of financially distressed issuers, including those that are in default or the issuers of which are in bankruptcy. Investments in the securities of financially distressed issuers involve substantial risks. These securities may present a substantial risk of default or may be in default at the time of investment. In addition, these securities may fluctuate more in price, and are typically less liquid than other higher-rated debt securities. The Fund also will be subject to significant uncertainty as to when, and in what manner, and for what value obligations evidenced by securities of financially distressed issuers will eventually be satisfied (e.g., through a liquidation of the issuer's assets, an exchange offer or plan of reorganization, or a payment of some amount in satisfaction of the obligation). Defaulted obligations might be repaid only after lengthy workout or bankruptcy proceedings, during which the issuer might not make any interest or other payments. In any such proceeding relating to a defaulted obligation, the Fund may lose its entire investment or may be required to accept cash or securities with a value substantially less than its original investment. Moreover, any securities received by the Fund upon completion of a workout or bankruptcy proceeding may be illiquid, speculative, or restricted as to resale. Similarly, if the Fund participates in negotiations with respect to any exchange offer or plan of reorganization with respect to the securities of a distressed issuer, the Fund may be restricted from disposing of such securities. To the extent that the Fund becomes involved in such proceedings, the Fund may have a more active participation in the affairs of the issuer than that assumed generally by an investor. The Fund may incur additional expenses to the extent it is required to seek recovery upon a default in the payment of principal or interest on its portfolio holdings.

Also among the risks inherent in investments in a troubled issuer is that it frequently may be difficult to obtain information as to the true financial condition of such issuer. PIMCO's judgments about the credit quality of a financially distressed issuer and the relative value of its securities may prove to be wrong.

Because it may invest in below-investment grade senior debt, the Fund may be subject to greater levels of credit risk than funds that do not invest in such debt. The Fund may also be subject to greater levels of liquidity risk than funds that do not invest in senior debt. Restrictions on transfers in loan agreements, a lack of publicly available information and other factors may, in certain instances, make senior debt more difficult to sell at an advantageous time or price than other types of securities or instruments. Additionally, if the issuer of senior debt prepays, the Fund will have to consider reinvesting the proceeds in other senior debt or similar instruments that may pay lower interest rates.

Loan interests may take the form of (i) direct interests acquired during a primary distribution, (ii) loans originated by the Fund or (iii) assignments of, novations of or participations in a loan acquired in secondary markets. In addition to credit risk and interest rate risk, the Fund's exposure to loan interests may be subject to additional risks. For example, purchasers of loans and other forms of direct indebtedness depend primarily upon the creditworthiness of the borrower for payment of principal and interest. If the Fund does not receive scheduled interest or principal payments on such indebtedness, the Fund's share price and yield could be adversely affected. Loans that are fully secured offer the Fund more protection than an unsecured loan in the event of non-payment of scheduled interest or principal. However, there is no assurance that the liquidation of collateral from a secured loan would satisfy the borrower's obligation, or that the collateral could be liquidated.

Investments in loans through a purchase of a loan, loan origination or a direct assignment of a financial institution's interests with respect to a loan may involve additional risks to the Fund. For example, if a loan is foreclosed, the Fund could become owner, in whole or in part, of any collateral, which could include, among other assets, real estate or other real or personal property, and would bear the costs and liabilities associated with owning and holding or disposing of the collateral. In addition, it is conceivable that under emerging legal theories of lender liability, the Fund as holder of a partial interest in a loan could be held liable as co-lender for acts of the agent lender. It is unclear whether loans and other forms of direct indebtedness offer securities law protections against fraud and misrepresentation. In the absence of definitive regulatory guidance, the Fund may rely on PIMCO's research in an attempt to avoid situations where fraud or misrepresentation could adversely affect the Fund.

While the purchaser of an assignment typically succeeds to all the rights and obligations of the assigning lender, assignments may be arranged through private negotiations and the rights and obligations acquired by the purchaser of an assignment may differ from, and be more limited than, those held by the assigning lender.

In connection with purchasing loan participations, the Fund generally will have no right to enforce compliance by the borrower with the terms of the loan agreement relating to the loan, nor any rights of set-off against the borrower, and the Fund may not directly benefit from any collateral supporting the loan in which it has purchased the loan participation. As a result, the Fund may be subject to the credit risk of both the borrower and the lender that is selling the participation. In the event of the insolvency of the lender selling a participation, the Fund may be treated as a general creditor of the lender and may not benefit from any set-off between the lender and the borrower. Certain loan participations may be structured in a manner designed to prevent purchasers of participations from being subject

to the credit risk of the lender with respect to the participation, but even under such a structure, in the event of the lender's insolvency, the lender's servicing of the participation may be delayed and the assignability of the participation impaired.

The Fund may have difficulty disposing of loans and loan participations because to do so it will have to assign or sell such instruments to a third party. Because there is no liquid market for many such loan instruments, the Fund anticipates that such instruments could be sold only to a limited number of institutional investors. The lack of a liquid secondary market may have an adverse impact on the value of such instruments and the Fund's ability to dispose of particular loans and loan participations when that would be desirable, including in response to a specific economic event such as a deterioration in the creditworthiness of the borrower. The lack of a liquid secondary market for loans and loan participations also may make it more difficult for the Fund to assign a value to these instruments for purposes of valuing the Fund's portfolio.

To the extent the Fund invests in loans, including bank loans, the Fund may be subject to greater levels of credit risk, call (or "prepayment") risk, settlement risk and liquidity risk than funds that do not invest in such instruments. These instruments are considered predominantly speculative with respect to an issuer's continuing ability to make principal and interest payments and may be more volatile than other types of instruments. The Fund may also be subject to greater levels of liquidity risk than funds that do not invest in loans. In addition, the loans in which the Fund invests may not be listed on any exchange and a secondary market for such loans may be comparatively illiquid relative to markets for other more liquid fixed income securities. Consequently, transactions in loans may involve greater costs than transactions in more actively traded securities. In connection with certain loan transactions, transaction costs that are borne by the Fund may include the expenses of third parties that are retained to assist with reviewing and conducting diligence, negotiating, structuring and servicing a loan transaction, and/or providing other services in connection therewith. Furthermore, the Fund may incur such costs in connection with loan transactions that are pursued by the Fund but not ultimately consummated (so-called "broken deal costs"). Restrictions on transfers in loan agreements, a lack of publicly-available information, irregular trading activity and wide bid/ask spreads among other factors, may also, in certain circumstances, make loans more difficult to sell at an advantageous time or price than other types of securities or instruments. These factors may result in the Fund being unable to realize full value for the loans and/or may result in the Fund not receiving the proceeds from a sale of a loan for an extended period after such sale, each of which could result in losses to a Fund. Some loans may have extended trade settlement periods, including settlement periods of greater than 7 days, which may result in cash not being immediately available to the Fund. If an issuer of a loan prepays or redeems the loan prior to maturity, the Fund may have to reinvest the proceeds in other loans or similar instruments that may pay lower interest rates. Because of the risks involved in investing in loans, an investment in the Fund should be considered speculative.

The Fund's investments in subordinated and unsecured loans generally are subject to similar risks as those associated with investments in secured loans. Subordinated or unsecured loans are lower in priority of payment to secured loans and are subject to the additional risk that the cash flow of the borrower and property securing the loan or debt, if any, may be insufficient to meet scheduled payments after giving effect to the senior secured obligations of the borrower. This risk is generally higher for subordinated unsecured loans or debt, which are not backed by a security interest in any specific collateral. Subordinated and unsecured loans generally have greater price volatility than secured loans and may be less liquid. There is also a possibility that originators will not be able to sell participations in subordinated or unsecured loans, which would create greater credit risk exposure for the holders of such loans. Subordinated and unsecured loans share the same risks as other below investment grade securities.

There may be less readily available information about most loans and the underlying borrowers than is the case for many other types of securities, including securities issued in transactions registered under the Securities Act, or registered under the Exchange Act, and borrowers subject to the periodic reporting requirements of Section 13 of the Exchange Act. Loans may be issued by companies that are not subject to SEC reporting requirements and therefore may not be required to file reports with the SEC or may file reports that are not required to comply with SEC form requirements. In addition, such companies may be subject to a less stringent liability disclosure regime than companies subject to SEC reporting requirements. Loans may not be considered "securities," and purchasers, such as the Fund, therefore may not be entitled to rely on the anti-fraud protections of the federal securities laws. Because there is limited public information available regarding loan investments, the Fund is particularly dependent on the analytical abilities of the Fund's portfolio managers. These issues may be particularly pronounced with respect to loans made to individuals.

Economic exposure to loan interests through the use of derivative transactions may involve greater risks than if the Fund had invested in the loan interest directly during a primary distribution, through direct originations, or through assignments of, novations of or participations in a loan acquired in secondary markets since, in addition to the risks described above, certain derivative transactions may be subject to leverage risk and greater illiquidity risk, counterparty risk, valuation risk and other risks.

The Fund may seek to originate loans, including, without limitation, residential and/or commercial real estate or mortgage-related loans, consumer loans or other types of loans, which may be in the form of whole loans, secured and unsecured notes, senior and second lien loans, mezzanine loans or similar investments. The Fund may subsequently offer such investments for sale to third parties; provided, that there is no assurance that the Fund will complete the sale of such an investment. If the Fund is unable to sell, assign or successfully close transactions for the loans that it originates, the Fund will be forced to hold its interest in such loans for an indeterminate period of time. This could result in the Fund's investments being over-concentrated in certain borrowers. The Fund will be responsible for the expenses associated with originating a loan (whether or not consummated). This may include significant legal and due diligence

Loan origination and servicing companies are routinely involved in legal proceedings concerning matters that arise in the ordinary course of their business. These legal proceedings range from actions involving a single plaintiff to class action lawsuits with potentially tens of thousands of class members. In addition, a number of participants in the loan origination and servicing industry (including control persons of industry participants) have been the subject of regulatory actions by state regulators, including state Attorneys General, and by the federal government. Governmental investigations, examinations or regulatory actions, or private lawsuits, including purported class action lawsuits, may adversely affect such companies' financial results. To the extent the Fund engages in origination and/or servicing directly, or has a financial interest in, or is otherwise affiliated with, an origination or servicing company, the Fund will be subject to enhanced risks of litigation, regulatory actions and other proceedings. As a result, the Fund may be required to pay legal fees, settlement costs, damages, penalties or other charges, any or all of which could materially adversely affect the Fund and its investments.

The Fund may originate loans to foreign entities and individuals. Such loans may involve risks not ordinarily associated with exposure to loans to U.S. entities and individuals. The foreign lending industry may be subject to less governmental supervision and regulation than exists in the U.S.; conversely, foreign regulatory regimes applicable to the lending industry may be more complex and more restrictive than those in the U.S., resulting in higher costs associated with such investments, and such regulatory regimes may be subject to interpretation or change without prior notice to investors, such as the Fund. Foreign lending may not be subject to accounting, auditing, and financial reporting standards and practices comparable to those in the U.S. Due to difference in legal systems, there may be difficulty in obtaining or enforcing a court judgment outside the U.S. For example, bankruptcy laws may differ across the jurisdictions in which the Fund may invest and it may be difficult for a servicer to pursue non-U.S. borrowers. In addition, to the extent that investments are made in a limited number of countries, events in those countries will have a more significant impact on the Fund. The Fund's loans to foreign entities and individuals may be subject to risks of increased transaction costs, potential delays in settlement or unfavorable differences between the U.S. economy and foreign economies.

The Fund's exposure to loans to foreign entities and individuals may be subject to withholding and other foreign taxes, which may adversely affect the net return on such investments. In addition, fluctuations in foreign currency exchange rates and exchange controls may adversely affect the market value of the Fund's exposure to loans to foreign entities and individuals. The Fund is unlikely to be able to pass through to its shareholders foreign income tax credits in respect of any foreign income taxes it pays.

The Gramm-Leach-Bliley Act ("GLBA") and other laws limit the disclosure of certain non-public personal information about a consumer to non-affiliated third parties and require financial institutions to disclose certain privacy policies and practices with respect to information sharing with both affiliates and non-affiliated third parties. Many states and a number of non-U.S. jurisdictions have enacted privacy and data security laws requiring safeguards on the privacy and security of consumers' personally identifiable information. Other laws deal with obligations to safeguard and dispose of private information in a manner designed to avoid its dissemination. Privacy rules adopted by the U.S. Federal Trade Commission and SEC implement GLBA and other requirements and govern the disclosure of consumer financial information by certain financial institutions, ranging from banks to private investment funds. U.S. platforms following certain models generally are required to have privacy policies that conform to these GLBA and other requirements. In addition, such platforms typically have policies and procedures intended to maintain platform participants' personal information securely and dispose of it properly.

The Fund generally does not intend to obtain or hold borrowers' non-public personal information, and the Fund intends to implement procedures designed to prevent the disclosure of borrowers' non-public personal information to the Fund. However, service providers to the Fund or its direct or indirect fully-owned subsidiaries, including their custodians and the platforms acting as loan servicers for the Fund or its direct or indirect fully-owned subsidiaries, may obtain, hold or process such information. The Fund cannot guarantee the security of non-public personal information in the possession of such a service provider and cannot guarantee that service providers have been and will continue to comply with GLBA, other data security and privacy laws and any other related regulatory requirements. Violations of GLBA and other laws could subject the Fund to litigation and/or fines, penalties or other regulatory action, which, individually or in the aggregate, could have an adverse effect on the Fund. The Fund may also face regulations related to privacy and data security in the other jurisdictions in which the Fund invests.

If the Fund purchases alternative lending-related instruments, such as whole or fractional loans, on an alternative lending platform, the Fund will receive payments on loans or securities representing the right to receive principal and interest payments due on loans only if the platform servicing the loans receives the borrower's payments on such loans and passes such payments through to the Fund. If a borrower is unable or fails to make payments on a loan for any reason, the Fund may be greatly limited in its ability to recover any outstanding principal or interest due, as (among other reasons) the Fund may not have direct recourse against the borrower or may otherwise be limited in its ability to directly enforce its rights under the loan, whether through the borrower or the platform through which such loan was originated, the loan may be unsecured or under-collateralized and/or it may be impracticable to commence a legal proceeding against the defaulting borrower.

as well as general characteristics of the loans made available through each platform. PIMCO may also engage a loan verification agent or other third party to perform confirmatory diligence on samples of loans, either prior to or following purchase. Although the Fund conducts this diligence on the platforms, the Fund generally does not have the ability to independently verify the information provided by the platforms, other than payment information regarding loans and other alternative lending-related instruments owned by the Fund, which the Fund observes directly as payments are received. The Fund may not review the particular characteristics of the loans in which it invests at the time of investment, but rather negotiate in advance with platforms the general criteria of the investments. As a result, the Fund is dependent on the platforms' ability to collect, verify and provide information to the Fund about each loan and borrower.

The Fund relies on the borrower's credit information, which is provided by the platforms. However, such information may be out of date, incomplete or inaccurate and may, therefore, not accurately reflect the borrower's actual creditworthiness. Platforms may not have an obligation to update borrower information, and, therefore, the Fund may not be aware of any impairment in a borrower's creditworthiness subsequent to the making of a particular loan. The platforms' credit decisions and scoring models may be based on algorithms that could potentially contain programming or other errors or prove to be ineffective or otherwise flawed. This could adversely affect loan pricing data and approval processes and could cause loans to be mispriced or misclassified, which could ultimately have a negative impact on the Fund's performance.

In addition, the underlying loans, in some cases, may be affected by the success of the platforms through which they are facilitated. Therefore, disruptions in the businesses of such platforms may also negatively impact the value of the Fund's investments. In addition, disruption in the business of a platform could limit or eliminate the ability of the Fund to invest in loans originated by that platform, and therefore the Fund could lose some or all of the benefit of its diligence effort with respect to that platform.

Platforms are for-profit businesses that, as a general matter, generate revenue by collecting fees on funded loans from borrowers and by assessing a loan servicing fee on investors, which may be a fixed annual amount or a percentage of the loan or amounts collected. This business could be disrupted in multiple ways; for example, a platform could file for bankruptcy or a platform might suffer reputational harm from negative publicity about the platform or alternative lending more generally and the loss of investor confidence in the event that a loan facilitated through the platform is not repaid and the investor loses money on its investment. Many platforms and/or their affiliates have incurred operating losses since their inception and may continue to incur net losses in the future, particularly as their businesses grow and they incur additional operating expenses.

Platforms may also be forced to defend legal action taken by regulators or governmental bodies. Alternative lending is a newer industry operating in an evolving legal environment. Platforms may be subject to risk of litigation alleging violations of law and/or regulations, including, for example, consumer protection laws, whether in the U.S. or in foreign jurisdictions. Platforms may be unsuccessful in defending against such lawsuits or other actions and, in addition to the costs incurred in fighting any such actions, platforms may be required to pay money in connection with the judgments, settlements or fines or may be forced to modify the terms of its borrower loans, which could cause the platform to realize a loss or receive a lower return on a loan than originally anticipated. Platforms may also be parties to litigation or other legal action in an attempt to protect or enforce their rights or those of affiliates, including intellectual property rights, and may incur similar costs in connection with any such efforts.

The Fund's investments in shares, certificates, notes or other instruments issued by a platform, its affiliates or a special purpose entity sponsored by a platform or its affiliates that represent the right to receive principal and interest payments due on fractions of whole loans or pools of whole loans may expose the Fund to the credit risk of the issuer. Generally, such instruments are unsecured obligations of the issuer; an issuer that becomes subject to bankruptcy proceedings may be unable to make full and timely payments on its obligations to the Fund, even if the payments on the underlying loan or loans continue to be made timely and in full. In addition, when the Fund owns such fractional loans or other instruments, the Fund and its custodian generally does not have a contractual relationship with, or personally identifiable information regarding, individual borrowers, so the Fund will not be able to enforce underlying loans directly against borrowers and may not be able to appoint an alternative servicing agent in the event that a platform or third-party servicer, as applicable, ceases to service the underlying loans. Therefore, the Fund is more dependent on the platform for servicing than in the case in which the Fund owns whole loans. Where such interests are secured, the Fund relies on the platform to perfect the Fund's security interest. In addition, there may be a delay between the time the Fund commits to purchase an instrument issued by a platform, its affiliate or a special purpose entity sponsored by the platform or its affiliate and the issuance of such instrument and, during such delay, the funds committed to such an investment will not earn interest on the investment nor will they be available for investment in other alternative lending-related instruments, which will reduce the effective rate of return on the investment.

financial intermediaries to "make markets," are at or near historic lows in relation to market size. Because market makers seek to provide stability to a market through their intermediary services, the significant reduction in dealer inventories could potentially lead to decreased liquidity and increased volatility in the fixed income markets. Such issues may be exacerbated during periods of economic uncertainty. In such cases, the Fund, due to limitations on investments in illiquid securities and the difficulty in purchasing and selling such securities or instruments, may be unable to achieve its desired level of exposure to a certain sector. To the extent that the Fund's principal investment strategies involve securities of companies with smaller market capitalizations, foreign (non-U.S.) securities, Rule 144A securities, senior loans, illiquid sectors of fixed income securities, derivatives or securities with substantial market and/or credit risk, the Fund will tend to have the greatest exposure to liquidity risk. Further, fixed income securities with longer durations until maturity face heightened levels of liquidity risk as compared to fixed income securities with shorter durations until maturity. The risks associated with illiquid instruments may be particularly acute in situations in which the Fund's operations require cash (such as in connection with repurchase offers) and could result in the Fund borrowing to meet its short-term needs or incurring losses on the sale of illiquid instruments. See "Principal Risks of the Fund – Repurchase Offers Risk." It may also be the case that other market participants may be attempting to liquidate fixed income holdings at the same time as the Fund, causing increased supply in the market and contributing to liquidity risk and downward pricing pressure. See "Principal Risks of the Fund— Valuation Risk." The alternative lending-related instruments in which the Fund invests are typically contractually non-transferable, not listed on any securities exchange and not registered under the Securities Act. In addition, the Fund anticipates that these instruments may only be sold to a limited number of investors and may have a limited or non-existent secondary market. Accordingly, the Fund currently expects that most of its investments in alternative lending-related instruments will face heightened levels of liquidity risk. Although currently, there is generally no active reliable, secondary market for alternative lending-related instruments, a secondary market for certain alternative lending-related instruments is developing.

Income from the Fund's portfolio will decline if and when the Fund invests the proceeds from matured, traded or called debt obligations at market interest rates that are below the portfolio's current earnings rate. For instance, during periods of declining interest rates, an issuer of debt obligations may exercise an option to redeem securities prior to maturity, forcing the Fund to invest in lower-yielding securities. The Fund also may choose to sell higher yielding portfolio securities and to purchase lower yielding securities to achieve greater portfolio diversification, because the portfolio managers believe the current holdings are overvalued or for other investment-related reasons. A decline in income received by the Fund from its investments is likely to have a negative effect on dividend levels, NAV and/or overall return of the Common Shares.

Call risk refers to the possibility that an issuer may exercise its right to redeem a fixed-income security earlier than expected (a call). Issuers may call outstanding securities prior to their maturity for a number of reasons (e.g., declining interest rates, changes in credit spreads and improvements in the issuer's credit quality). If an issuer calls a security in which the Fund has invested, the Fund may not recoup the full amount of its initial investment and may be forced to reinvest in lower-yielding securities, securities with greater credit risks or securities with other, less favorable features.

The Fund may invest in foreign (non-U.S.) securities and may experience more rapid and extreme changes in value than a fund that invests exclusively in securities of U.S. companies. The securities markets of many foreign countries are relatively small, with a limited number of companies representing a small number of industries. Additionally, issuers of foreign (non-U.S.) securities are usually not subject to the same degree of regulation as U.S. issuers. Reporting, accounting, auditing and custody standards of foreign countries differ, in some cases significantly, from U.S. standards. Global economies and financial markets are becoming increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. Also, nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments could adversely affect the Fund's investments in a foreign country. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire investment in foreign (non-U.S.) securities. Adverse conditions in a certain region can adversely affect securities of other countries whose economies appear to be unrelated. To the extent that the Fund invests a significant portion of its assets in a specific geographic region, the Fund will generally have more exposure to regional economic risks associated with foreign (non-U.S.) investments. Foreign (non-U.S.) securities may also be less liquid and more difficult to value than securities of U.S. issuers.

The global economic crisis brought several small economies in Europe to the brink of bankruptcy and many other economies into recession and weakened the banking and financial sectors of many European countries. For example, the governments of Greece, Spain, Portugal, and the Republic of Ireland have all experienced large public budget deficits, the effects of which are still yet unknown and may slow the overall recovery of European economies from the global economic crisis. In addition, due to large public deficits, some European countries may be dependent on assistance from other European governments and institutions or other central banks or supranational agencies such as the International Monetary Fund. Assistance may be dependent on a country's implementation of reforms or reaching a certain level of performance. Failure to reach those objectives or an insufficient level of assistance could result in a deep economic downturn which could significantly affect the value of the Fund's European investments. It is possible that one or more Economic and Monetary Union member countries could abandon the euro and return to a national currency and/or that the euro will cease to exist as a single currency in its current form. The exit of any country out of the euro may have an extremely destabilizing effect on other eurozone countries and their economies and a negative effect on the global economy as a whole. Such an exit by one

country may also increase the possibility that additional countries may exit the euro should they face similar financial difficulties.

The Fund may face potential risks associated with the referendum on the United Kingdom's continued membership in the EU, which resulted in a vote for the United Kingdom to leave the EU. The vote to leave the EU may result in substantial volatility in foreign exchange markets and may lead to a sustained weakness in the British pound's exchange rate against the United States dollar, the euro and other currencies, which may impact Fund returns. The vote to leave the EU may result in a sustained period of market uncertainty, as the United Kingdom seeks to negotiate the terms of its exit. It may also destabilize some or all of the other EU member countries and/or the Eurozone. These developments could result in losses to the Fund, as there may be negative effects on the value of the Fund's investments and/or on the Fund's ability to enter into certain transactions or value certain investments, and these developments may make it more difficult for the Fund to exit certain investments at an advantageous time or price. Such events could result from, among other things, increased uncertainty and volatility in the United Kingdom, the EU and other financial markets; fluctuations in asset values; fluctuations in exchange rates; decreased liquidity of investments located, traded or listed within the United Kingdom, the EU or elsewhere; changes in the willingness or ability of financial and other counterparties to enter into transactions or the price and terms on which other counterparties are willing to transact; and/or changes in legal and regulatory regimes to which Fund investments are or become subject. Any of these events, as well as an exit or expulsion of an EU member state other than the United Kingdom from the EU, could negatively impact Fund returns.

The Fund may invest in securities and instruments that are economically tied to Russia. Investments in Russia are subject to various risks such as political, economic, legal, market and currency risks. The risks include uncertain political and economic policies, short term market volatility, poor accounting standards, corruption and crime, an inadequate regulatory system, and unpredictable taxation. Investments in Russia are particularly subject to the risk that economic sanctions may be imposed by the United States and/or other countries. Such sanctions — which may impact companies in many sectors, including energy, financial services and defense, among others — may negatively impact the Fund's performance and/or ability to achieve its investment objectives. The Russian securities market is characterized by limited volume of trading, resulting in difficulty in obtaining accurate prices. The Russian securities market, as compared to U.S. markets, has significant price volatility, less liquidity, a smaller market capitalization and a smaller number of traded securities. There may be little publicly available information about issuers. Settlement, clearing and registration of securities transactions are subject to risks because of registration systems that may not be subject to effective government supervision. This may result in significant delays or problems in registering the transfer of securities. Russian securities laws may not recognize foreign nominee accounts held with a custodian bank, and therefore the custodian may be considered the ultimate owner of securities they hold for their clients. Ownership of securities issued by Russian companies is recorded by companies themselves and by registrars instead of through a central registration system. It is possible that the ownership rights of the Fund could be lost through fraud or negligence. While applicable Russian regulations impose liability on registrars for losses resulting from their errors, it may be difficult for the Fund to enforce any rights it may have against the registrar or issuer of the securities in the event of loss of share registration. Adverse currency exchange rates are a risk and there may be a lack of available currency hedging instruments. Investments in Russia may be subject to the risk of nationalization or expropriation of assets. Oil, natural gas, metals, and timber account for a significant portion of Russia's exports, leaving the country vulnerable to swings in world prices.

Foreign investment risk may be particularly high to the extent that the Fund invests in securities of issuers based in or doing business in emerging market countries or invests in securities denominated in the currencies of emerging market countries. Investing in securities of issuers based in or doing business in emerging markets entails all of the risks of investing in foreign securities noted above, but to a heightened degree.

Investments in emerging market countries pose a greater degree of systemic risk (i.e., the risk of a cascading collapse of multiple institutions within a country, and even multiple national economies). The inter-relatedness of economic and financial institutions within and among emerging market economies has deepened over the years, with the effect that institutional failures and/or economic difficulties that are of initially limited scope may spread throughout a country, a region or even among all or most emerging market countries. This may undermine any attempt by the Fund to reduce risk through geographic diversification of its portfolio investments among emerging market countries.

There is a heightened possibility of imposition of withholding taxes on interest or dividend income generated from emerging market securities. Governments of emerging market countries may engage in confiscatory taxation or expropriation of income and/or assets to raise revenues or to pursue a domestic political agenda. In the past, emerging market countries have nationalized assets, companies and even entire sectors, including the assets of foreign investors, with inadequate or no compensation to the prior owners. There can be no assurance that the Fund will not suffer a loss of any or all of its investments or, interest or dividends thereon, due to adverse fiscal or other policy changes in emerging market countries.

There is also a greater risk that an emerging market government may take action that impedes or prevents the Fund from taking income and/or capital gains earned in the local currency and converting into U.S. dollars (i.e., "repatriating" local currency investments or profits). Certain emerging market countries have sought to maintain foreign exchange reserves and/or address the economic volatility and dislocations caused by the large international capital flows by controlling or restricting the conversion of the local currency into other currencies. This risk tends to become more acute when economic conditions otherwise worsen. There can be no assurance that if the Fund earns income or capital gains in an emerging market currency or PIMCO otherwise seeks to withdraw the Fund's investments from a given emerging market country, capital controls imposed by such country will not prevent, or cause significant expense in, doing so.

Bankruptcy law and creditor reorganization processes may differ substantially from those in the United States, resulting in greater uncertainty

as to the rights of creditors, the enforceability of such rights, reorganization timing and the classification, seniority and treatment of claims. In certain emerging market countries, although bankruptcy laws have been enacted, the process for reorganization remains highly uncertain. In addition, it may be impossible to seek legal redress against an issuer that is a sovereign state.

Other heightened risks associated with emerging markets investments include, without limitation, (i) risks due to less social, political and economic stability; (ii) the smaller size of the market for such securities and a lower volume of trading, resulting in a lack of liquidity and in price volatility; (iii) certain national policies which may restrict the Fund's investment opportunities, including restrictions on investing in issuers or industries deemed sensitive to relevant national interests and requirements that government approval be obtained prior to investment by foreign persons; (iv) certain national policies that may restrict the Fund's repatriation of investment income, capital or the proceeds of sales of securities, including temporary restrictions on foreign capital remittances; (v) the lack of uniform accounting and auditing standards and/or standards that may be significantly different from the standards required in the United States; (vi) less publicly available financial and other information regarding issuers; (vii) potential difficulties in enforcing contractual obligations; and (viii) higher rates of inflation, higher interest rates and other economic concerns. The Fund may invest to a substantial extent in emerging market securities that are denominated in local currencies, subjecting the Fund to a greater degree of foreign currency risk. See "Principal Risks of the Fund—Currency Risk." Also, investing in emerging market countries may entail purchases of securities of issuers that are insolvent, bankrupt or otherwise of questionable ability to satisfy their payment obligations as they become due, subjecting the Fund to a greater amount of credit risk and/or high yield risk. See "Principal Risks of the Fund—Credit Risk" and "Principal Risks of the Fund—High Yield Securities Risk."

The Fund may engage in practices and strategies that will result in exposure to fluctuations in foreign exchange rates, in which case the Fund will be subject to foreign currency risk. The Fund's Common Shares are priced in U.S. dollars and the distributions paid by the Fund to Common Shareholders are paid in U.S. dollars. However, because a substantial portion of the Fund's assets may be denominated directly in foreign (non-U.S.) currencies or in securities that trade in, and receive revenues in, foreign (non-U.S.) currencies, or in derivatives that provide exposure to foreign (non-U.S.) currencies, it will be subject to the risk that those currencies will decline in value relative to the U.S. dollar, or, in the case of hedging positions, that the U.S. dollar will change in value relative to the currency being hedged.

Currency rates in foreign (non-U.S.) countries may fluctuate significantly over short periods of time for a number of reasons, including changes in interest rates, rates of inflation, balance of payments and governmental surpluses or deficits, intervention (or the failure to intervene) by U.S. or foreign (non-U.S.) governments, central banks or supranational entities such as the International Monetary Fund, or by the imposition of currency controls or other political developments in the United States or abroad. These fluctuations may have a significant adverse impact on the value of the Fund's portfolio and/or the level of Fund distributions made to Common Shareholders. As noted above, the Fund may (but is not required to) seek exposure to foreign currencies, or attempt to hedge exposure to reduce the risk of loss due to fluctuations in currency exchange rates relative to the U.S. dollar. There is no assurance, however, that these strategies will be available or will be used by the Fund or, if used, that they will be successful. As a result, the Fund's investments in foreign currency-denominated securities may reduce the returns of the Fund.

Currency risk may be particularly high to the extent that the Fund invests in foreign (non-U.S.) currencies or engages in foreign currency transactions that are economically tied to emerging market countries. These currency transactions may present market, credit, currency, liquidity, legal, political and other risks different from, or greater than, the risks of investing in developed foreign (non-U.S.) currencies or engaging in foreign currency transactions that are economically tied to developed foreign countries.

To the extent that the Fund invests in real estate related investments, including REITs, real estate-related loans or real estate-linked derivative instruments, it will be subject to the risks associated with owning real estate and with the real estate industry generally. These include difficulties in valuing and disposing of real estate, the possibility of declines in the value of real estate, risks related to general and local economic conditions, the possibility of adverse changes in the climate for real estate, environmental liability risks, the risk of increases in property taxes and operating expenses, possible adverse changes in zoning laws, the risk of casualty or condemnation losses, limitations on rents, the possibility of adverse changes in interest rates and in the credit markets and the possibility of borrowers paying off mortgages sooner than expected, which may lead to reinvestment of assets at lower prevailing interest rates. To the extent that the Fund invests in REITs, it will also be subject to the risk that a REIT may default on its obligations or go bankrupt. By investing in REITs indirectly through the Fund, a shareholder will indirectly bear his or her proportionate share of the expenses of the REITs. The Fund's investments in REITs could cause the Fund to recognize income in excess of cash received from those securities and, as a result, the Fund may be required to sell portfolio securities, including when it is not advantageous to do so, in order to make distributions. An investment in a REIT or a real estate-linked derivative instrument that is linked to the value of a REIT is subject to additional risks, such as poor performance by the manager of the REIT, adverse changes to the tax laws or failure by the REIT to qualify for tax-free pass-through of income under the Internal Revenue Code of 1986 as amended (the "Code"). In addition, some REITs have limited diversification because they invest in a limited number of properties, a narrow geographic area, or a single type of property. Also, the organizational documents of a REIT may contain provisions that make changes in control of the REIT difficult and time-consuming. Finally, private REITs are not traded on a national securities exchange. As such, these products are generally illiquid. This reduces the ability of the Fund to redeem its investment early. Private REITs are also generally harder to value and may bear higher fees than public REITs.

The Fund may invest in debt securities issued or guaranteed by agencies, instrumentalities and sponsored enterprises of the U.S. Government. Some U.S. Government securities, such as U.S. Treasury bills, notes and bonds, and mortgage-related securities guaranteed by the Government National Mortgage Association ("GNMA"), are supported by the full faith and credit of the United States; others, such as those of the Federal Home Loan Banks ("FHLBs") or the Federal Home Loan Mortgage Corporation ("FHLMC"), are supported by the right of the issuer to borrow from the U.S. Treasury; others, such as those of the Federal National Mortgage Association ("FNMA"), are supported by the discretionary authority of the U.S. Government to purchase the agency's obligations; and still others are supported only by the credit of the issuing agency, instrumentality or corporation. Although legislation has been enacted to support certain government sponsored entities, including the FHLBs, FHLMC and FNMA, there is no assurance that the obligations of such entities will be satisfied in full, or that such obligations will not decrease in value or default. It is difficult, if not impossible, to predict the future political, regulatory or economic changes that could impact the government sponsored entities and the values of their related securities or obligations. In addition, certain governmental entities, including the FNMA and FHLMC, have been subject to regulatory scrutiny regarding their accounting policies and practices and other concerns that may result in legislation, changes in regulatory oversight and/or other consequences that could adversely affect the credit quality, availability or investment character of securities issued by these entities. See "Investment Objectives and Policies—Mortgage-Related and Other Asset-Backed Instruments" in the Statement of Additional Information.

U.S. Government debt securities generally involve lower levels of credit risk than other types of debt securities of similar maturities, although, as a result, the yields available from U.S. Government debt securities are generally lower than the yields available from such other securities. Like other debt securities, the values of U.S. Government securities change as interest rates fluctuate. Fluctuations in the value of portfolio securities will not affect interest income on existing portfolio securities but will be reflected in the Fund's NAV.

The Fund's investments in debt obligations of foreign (non-U.S.) governments or their sub-divisions, agencies and government sponsored enterprises and obligations of international agencies and supranational entities (together "Foreign Government Securities") can involve a high degree of risk. The foreign governmental entity that controls the repayment of debt may not be able or willing to repay the principal and/or interest when due in accordance with the terms of such debt. A governmental entity's willingness or ability to repay principal and interest due in a timely manner may be affected by, among other factors, its cash flow situation, the extent of its foreign reserves, the availability of sufficient foreign exchange on the date a payment is due, the relative size of the debt service burden to the economy as a whole, the governmental entity's policy towards the International Monetary Fund and the political constraints to which a governmental entity may be subject. Foreign governmental entities also may be dependent on expected disbursements from other governments, multilateral agencies and others abroad to reduce principal and interest arrearages on their debt. The commitment on the part of these governments, agencies and others to make such disbursements may be conditioned on the implementation of economic reforms and/or economic performance and the timely service of such debtor's obligations. Failure to implement such reforms, achieve such levels of economic performance or repay principal or interest when due may result in the cancellation of such third parties' commitments to lend funds to the foreign governmental entity, which may further impair such debtor's ability or willingness to timely service its debts. Consequently, foreign governmental entities may default on their debt. Holders of Foreign Government Securities may be requested to participate in the rescheduling of such debt and to extend further loans to governmental entities. In the event of a default by a governmental entity, there may be few or no effective legal remedies for collecting on such debt. These risks are particularly severe with respect to the Fund's investments in Foreign Government Securities of emerging market countries. See "Principal Risks of the Fund—Emerging Markets Risk." Among other risks, if the Fund's investments in Foreign Government Securities issued by an emerging market country need to be liquidated quickly, the Fund could sustain significant transaction costs. Also, governments in many emerging market countries participate to a significant degree in their economies and securities markets, which may impair investment and economic growth, and which may in turn diminish the value of the Fund's holdings in emerging market Foreign Government Securities and the currencies in which they are denominated and/or pay revenues.

Convertible securities are fixed-income securities, preferred securities or other securities that are convertible into or exercisable for common stock of the issuer (or cash or securities of equivalent value) at either a stated price or a stated rate. The market values of convertible securities may decline as interest rates increase and, conversely, may increase as interest rates decline. A convertible security's market value, however, tends to reflect the market price of the common stock of the issuing company when that stock price approaches or is greater than the convertible security's "conversion price." The conversion price is defined as the predetermined price at which the convertible security could be exchanged for the associated stock. As the market price of the underlying common stock declines, the price of the convertible security tends to be influenced more by the yield of the convertible security. Thus, it may not decline in price to the same extent as the underlying common stock. In the event of a liquidation of the issuing company, holders of convertible securities may be paid before the company's common stockholders but after holders of any senior debt obligations of the company. Consequently, the issuer's convertible securities generally entail less risk than its common stock but more risk than its debt obligations. Convertible securities are often rated below investment grade or not rated because they fall below debt obligations and just above common equity in order of preference or priority on the issuer's balance sheet. See "Principal Risks of the Fund—High Yield Securities Risk."

The risks of investing in contingent convertible securities ("CoCos") include, without limitation, the risk that interest payments will be cancelled by the

issuer or a regulatory authority, the risk of ranking junior to other creditors in the event of a liquidation or other bankruptcy-related event as a result of holding subordinated debt, the risk of the Fund's investment becoming further subordinated as a result of conversion from debt to equity, the risk that the principal amount due can be written down to a lesser amount, and the general risks applicable to fixed income investments, including interest rate risk, credit risk, market risk and liquidity risk, any of which could result in losses to the Fund. CoCos may experience a loss absorption mechanism trigger event, which would likely be the result of, or related to, the deterioration of the issuer's financial condition (e.g., a decrease in the issuer's capital ratio) and status as a going concern. In such a case, with respect to contingent convertible securities that provide for conversion into common stock upon the occurrence of the trigger event, the market price of the issuer's common stock received by the Fund will have likely declined, perhaps substantially, and may continue to decline, which may adversely affect the Fund's net asset value.

When market quotations are not readily available or are deemed to be unreliable, the Fund values its investments at fair value as determined in good faith pursuant to policies and procedures approved by the Board of Trustees. See "Net Asset Value." Fair value pricing may require subjective determinations about the value of a security or other asset. As a result, there can be no assurance that fair value pricing will result in adjustments to the prices of securities or other assets, or that fair value pricing will reflect actual market value, and it is possible that the fair value determined for a security or other asset will be materially different from quoted or published prices, from the prices used by others for the same security or other asset and/or from the value that actually could be or is realized upon the sale of that security or other asset.

The Fund's use of leverage (as described under "Use of Leverage" in the body of this prospectus) creates the opportunity for increased Common Share net income, but also creates special risks for Common Shareholders. To the extent used, there is no assurance that the Fund's leveraging strategies will be successful. Leverage is a speculative technique that may expose the Fund to greater risk and increased costs. The net proceeds that the Fund obtains from its use of reverse repurchase agreements, credit default swaps, dollar rolls and/or borrowings (as well as from any future issuance of preferred shares) will be invested in accordance with the Fund's investment objectives and policies as described in this prospectus and any prospectus supplement. Interest or other expenses payable by the Fund with respect to its reverse repurchase agreements, credit default swaps, dollar rolls and borrowings (for dividends payable with respect to any outstanding preferred shares) will generally be based on shorter-term interest rates that would be periodically reset. So long as the Fund's portfolio investments provide a higher rate of return (net of applicable Fund expenses) than the interest rates and other costs to the Fund of such leverage, the investment of the proceeds thereof will generate more income than will be needed to pay the costs of the leverage. If so, and all other things being equal, the excess may be used to pay higher dividends to Common Shareholders than if the Fund were not so leveraged. If, however, shorter-term interest rates rise relative to the rate of return on the Fund's portfolio, the interest and other costs of leverage to the Fund (including interest expenses on reverse repurchase agreements, dollar rolls and borrowings and the dividend rate on any outstanding preferred shares) could exceed the rate of return on the debt obligations and other investments held by the Fund, thereby reducing return to Common Shareholders. In addition, fees and expenses of any form of leverage used by the Fund will be borne entirely by the Common Shareholders (and not by preferred shareholders, if any) and will reduce the investment return of the Common Shares. Therefore, there can be no assurance that the Fund's use of leverage will result in a higher yield on the Common Shares, and it may result in losses. In addition, any preferred shares issued by the Fund are expected to pay cumulative dividends, which may tend to increase leverage risk.

Leverage creates several major types of risks for Common Shareholders, including:

the likelihood of greater volatility of NAV of Common Shares, and of the investment return to Common Shareholders, than a comparable portfolio without leverage;

the possibility either that Common Share dividends will fall if the interest and other costs of leverage rise, or that dividends paid on Common Shares will fluctuate because such costs vary over time; and

the effects of leverage in a declining market or a rising interest rate environment, as leverage is likely to cause a greater decline in the NAV of the Common Shares than if the Fund were not leveraged.

In addition, the counterparties to the Fund's leveraging transactions and any preferred shareholders of the Fund will have priority of payment over the Fund's Common Shareholders.

The use by the Fund of reverse repurchase agreements and dollar rolls to obtain leverage also involves special risks. For instance, the market value of the securities that the Fund is obligated to repurchase under a reverse repurchase agreement or dollar roll may decline below the repurchase price. See "The Fund's Investment Objectives and Strategies—Portfolio Contents and Other Information—Reverse Repurchase Agreements and Dollar Rolls."

In addition to reverse repurchase agreements, dollar rolls and/or borrowings (or a future issuance of preferred shares), the Fund may engage in other transactions that may give rise to a form of leverage including, among others, futures and forward contracts (including foreign currency exchange contracts), credit default swaps, total return swaps, basis swaps and other derivative transactions, loans of portfolio securities, short sales and when-issued, delayed delivery and forward commitment transactions). The Fund's use of such transactions gives rise to associated leverage risks described above, and may adversely affect the Fund's income, distributions and total returns to Common Shareholders. The Fund manages some of its derivative positions by segregating an amount of cash or liquid securities equal to the notional value or the market value, as applicable, of those positions. See "Principal Risks of the Fund—Segregation and Coverage Risk." The Fund may also offset derivatives positions against one another or against other assets to manage effective market exposure resulting from derivatives in its portfolio. To the extent that any offsetting positions do not behave in

relation to one another as expected, the Fund may perform as if it is leveraged through use of these derivative strategies. See "Leverage."

Because the fees received by the Investment Manager are based on the average daily total managed assets of the Fund (including assets attributable to any reverse repurchase agreements, dollar rolls, borrowings and preferred shares that may be outstanding) minus accrued liabilities (other than liabilities representing reverse repurchase agreements, dollar rolls and borrowings), the Investment Manager has a financial incentive for the Fund to use certain forms of leverage (e.g., reverse repurchase agreements, dollar rolls and borrowings) or to issue preferred shares, which may create a conflict of interest between the Investment Manager, on the one hand, and the Common Shareholders, on the other hand.

Certain portfolio management techniques, such as, among other things, using reverse repurchase agreements or dollar rolls, purchasing securities on a when-issued or delayed delivery basis, entering into swap agreements, futures contracts or other derivative transactions, or engaging in short sales, may be considered senior securities unless steps are taken to segregate the Fund's assets or otherwise cover its obligations. To avoid having these instruments considered senior securities, the Fund may segregate liquid assets with a value equal (on a daily mark-to-market basis) to its obligations under these types of leveraged transactions, enter into offsetting transactions or otherwise cover such transactions. See "Use of Leverage" in this prospectus. The Fund may be unable to use such segregated assets for certain other purposes, which could result in the Fund earning a lower return on its portfolio than it might otherwise earn if it did not have to segregate those assets in respect of, or otherwise cover, such portfolio positions. To the extent the Fund's assets are segregated or committed as cover, it could limit the Fund's investment flexibility. Segregating assets and covering positions will not limit or offset losses on related positions.

To the extent that the Fund focuses its investments in a particular industry, the NAV of the Common Shares will be more susceptible to events or factors affecting companies in that industry. These may include, but are not limited to, governmental regulation, inflation, rising interest rates, cost increases in raw materials, fuel and other operating expenses, technological innovations that may render existing products and equipment obsolete, competition from new entrants, high research and development costs, increased costs associated with compliance with environmental or other regulation and other economic, market, political or other developments specific to that industry. Also, the Fund may invest a substantial portion of its assets in companies in related sectors that may share common characteristics, are often subject to similar business risks and regulatory burdens and whose securities may react similarly to the types of events and factors described above, which will subject the Fund to greater risk. The Fund also will be subject to focused investment risk to the extent that it invests a substantial portion of its assets in a particular country or geographic region. See "Principal Risks of the Fund—Foreign (Non-U.S.) Investment Risk," "Principal Risks of the Fund—Emerging Markets Risk" and "Principal Risks of the Fund—Currency Risk."

The Fund may, but is not required to, utilize a variety of derivative instruments (both long and short positions) for investment or risk management purposes, as well as to leverage its portfolio. The Fund may use derivatives to gain exposure to securities markets in which it may invest (e.g., pending investment of the proceeds of this offering in individual securities, as well as on an ongoing basis). The Fund may also use derivatives to add leverage to its portfolio. See "Principal Risks of the Fund—Leverage Risk." Derivatives transactions that the Fund may utilize include, but are not limited to, purchases or sales of futures and forward contracts (including foreign currency exchange contracts), call and put options, credit default swaps, total return swaps, basis swaps and other swap agreements. The Fund may also have exposure to derivatives, such as interest rate or credit-default swaps, through investment in credit-linked trust certificates and other securities issued by special purpose or structured vehicles. The Fund's use of derivative instruments involves risks different from, and possibly greater than, the risks associated with investing directly in securities and other traditional investments. Derivatives are subject to a number of risks described elsewhere in this prospectus, such as liquidity risk, interest rate risk, issuer risk, credit risk, leveraging risk, counterparty risk and management risk. See "Principal Risks of the Fund—Segregation and Coverage Risk." They also involve the risk of mispricing or improper valuation, the risk of unfavorable or ambiguous documentation and the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. If the Fund invests in a derivative instrument, it could lose more than the principal amount invested. Also, suitable derivative transactions may not be available in all circumstances and there can be no assurance that the Fund will engage in these transactions to reduce exposure to other risks when that would be beneficial. The Fund's use of derivatives also may affect the amount, timing or character of distributions to, and taxes payable by Common Shareholders. See "Tax Matters."

Over-the-counter ("OTC") derivatives are also subject to the risk that a counterparty to the transaction will not fulfill its contractual obligations to the other party, as many of the protections afforded to centrally-cleared derivatives might not be available for OTC derivatives transactions. For derivatives traded on an exchange or through a central counterparty, credit risk resides with the Fund's clearing broker, or the clearinghouse itself, rather than with a counterparty in an OTC derivative transaction.

liquidity of derivatives, or may otherwise adversely affect the value or performance of derivatives. Any such adverse future developments could impair the effectiveness of the Fund's derivative transactions and cause the Fund to lose value. For instance, in December 2015, the SEC proposed new regulations applicable to a registered investment company's use of derivatives and related instruments. If adopted as proposed, these regulations could significantly limit or impact the Fund's ability to invest in derivatives and other instruments, limit the Fund's ability to employ certain strategies that use derivatives and/or adversely affect the Fund's performance, efficiency in implementing its strategy, liquidity and/or ability to pursue its investment objectives.

Credit default swap agreements may involve greater risks than if the Fund had invested in the reference obligation directly since, in addition to general market risks, credit default swaps are subject to illiquidity risk, counterparty risk and credit risk. A buyer generally also will lose its investment and recover nothing should no credit event occur and the swap is held to its termination date. If a credit event were to occur, the value of any deliverable obligation received by the seller (if any), coupled with the upfront or periodic payments previously received, may be less than the full notional value it pays to the buyer, resulting in a loss of value to the seller. When the Fund acts as a seller of a credit default swap, it is exposed to many of the same risks of leverage described herein since if an event of default occurs, the seller must pay the buyer the full notional value of the reference obligation. See "Principal Risks of the Fund—Leverage Risk."

Although the Fund may seek to realize gains by selling credit default swaps that increase in value, to realize gains on selling credit default swaps, an active secondary market for such instruments must exist or the Fund must otherwise be able to close out these transactions at advantageous times. In addition to the risk of losses described above, if no such secondary market exists or the Fund is otherwise unable to close out these transactions at advantageous times, selling credit default swaps may not be profitable for the Fund.

The market for credit default swaps has become more volatile in recent years as the creditworthiness of certain counterparties has been questioned and/or downgraded. The Fund will be subject to credit risk with respect to the counterparties to the credit default swap contract (whether a clearing corporation in the case of a cleared credit default swap or another third party in the case of an uncleared credit default swap). If a counterparty's credit becomes significantly impaired, multiple requests for collateral posting in a short period of time could increase the risk that the Fund may not receive adequate collateral. The Fund may exit its obligations under a credit default swap only by terminating the contract and paying applicable breakage fees, or by entering into an offsetting credit default swap position, which may cause the Fund to incur more losses.

The Fund may invest in structured products, including, structured notes, credit-linked notes and other types of structured products. Holders of structured products bear risks of the underlying investments, index or reference obligation and are subject to counterparty risk. The Fund may have the right to receive payments only from the structured product, and generally does not have direct rights against the issuer or the entity that sold the assets to be securitized. While certain structured products enable the investor to acquire interests in a pool of securities without the brokerage and other expenses associated with directly holding the same securities, investors in structured products generally pay their share of the structured product's administrative and other expenses. Although it is difficult to predict whether the prices of indices and securities underlying structured products will rise or fall, these prices (and, therefore, the prices of structured products) are generally influenced by the same types of political and economic events that affect issuers of securities and capital markets generally. If the issuer of a structured product uses shorter term financing to purchase longer term securities, the issuer may be forced to sell its securities at below market prices if it experiences difficulty in obtaining such financing, which may adversely affect the value of the structured products owned by the Fund. Structured products generally entail risks associated with derivative instruments. See "Principal Risks of the Fund—Derivatives Risk."

The Fund will be subject to credit risk with respect to the counterparties to the derivative contracts and other instruments entered into by the Fund or held by special purpose or structured vehicles in which the Fund invests. In the event that the Fund enters into a derivative transaction with a counterparty that subsequently becomes insolvent or becomes the subject of a bankruptcy case, the derivative transaction may be terminated in accordance with its terms and the Fund's ability to realize its rights under the derivative instrument and its ability to distribute the proceeds could be adversely affected. If a counterparty becomes bankrupt or otherwise fails to perform its obligations under a derivative contract due to financial difficulties, the Fund may experience significant delays in obtaining any recovery (including recovery of any collateral it has provided to the counterparty) in a dissolution, assignment for the benefit of creditors, liquidation, winding-up, bankruptcy, or other analogous proceeding. In addition, in the event of the insolvency of a counterparty to a derivative transaction, the derivative transaction would typically be terminated at its fair market value. If the Fund is owed this fair market value in the termination of the derivative transaction and its claim is unsecured, the Fund will be treated as a general creditor of such counterparty, and will not have any claim with respect to any underlying security or asset. The Fund may obtain only a limited recovery or may obtain no recovery in such circumstances.

In managing the Fund, PIMCO may from time to time have the opportunity to receive material, non-public information ("Confidential Information") about the issuers of certain investments, including, without limitation, senior floating rate loans, other loans and related investments being considered for acquisition by the Fund or held in the Fund's portfolio. For example, an issuer of privately placed loans considered by the Fund may offer to provide PIMCO with financial information and related documentation regarding the issuer that is not publicly available. Pursuant to applicable policies and procedures, PIMCO may (but is not required to) seek to avoid receipt of Confidential Information from the issuer so as to

avoid possible restrictions on its ability to purchase and sell investments on behalf of the Fund and other clients to which such Confidential Information relates (e.g., other securities issued by the bank used in the example above). In such circumstances, the Fund (and other PIMCO clients) may be disadvantaged in comparison to other investors, including with respect to the price the Fund pays or receives when it buys or sells an investment. Further, PIMCO's and the Fund's abilities to assess the desirability of proposed consents, waivers or amendments with respect to certain investments may be compromised if they are not privy to available Confidential Information. PIMCO may also determine to receive such Confidential Information in certain circumstances under its applicable policies and procedures. If PIMCO intentionally or unintentionally comes into possession of Confidential Information, it may be unable, potentially for a substantial period of time, to purchase or sell investments to which such Confidential Information relates.

A private placement involves the sale of securities that have not been registered under the Securities Act, or relevant provisions of applicable non-U.S. law, to certain institutional and qualified individual purchasers, such as the Fund. In addition to the general risks to which all securities are subject, securities received in a private placement generally are subject to strict restrictions on resale, and there may be no liquid secondary market or ready purchaser for such securities. See "Principal Risks of the Fund—Liquidity Risk." Therefore, the Fund may be unable to dispose of such securities when it desires to do so, or at the most favorable time or price. Private placements may also raise valuation risks. See "Principal Risks of the Fund—Valuation Risk."

Inflation risk is the risk that the value of assets or income from the Fund's investments will be worth less in the future as inflation decreases the value of payments at future dates. As inflation increases, the real value of the Fund's portfolio could decline. Deflation risk is the risk that prices throughout the economy decline over time. Deflation may have an adverse effect on the creditworthiness of issuers and may make issuer default more likely, which may result in a decline in the value of the Fund's portfolio and Common Shares.

Legal, tax and regulatory changes could occur and may adversely affect the Fund and its ability to pursue its investment strategies and/or increase the costs of implementing such strategies. New (or revised) laws or regulations may be imposed by the U.S. Commodity Futures Trading Commission ("CFTC"), the SEC, the U.S. Internal Revenue Service ("IRS"), the U.S. Federal Reserve or other banking regulators, other governmental regulatory authorities or self-regulatory organizations that supervise the financial markets that could adversely affect the Fund. In particular, these agencies are implementing a variety of new rules pursuant to financial reform legislation in the United States. The EU (and some other countries) are implementing similar requirements. The Fund also may be adversely affected by changes in the enforcement or interpretation of existing statutes and rules by these governmental regulatory authorities or self-regulatory organizations.

In addition, the securities and futures markets are subject to comprehensive statutes, regulations and margin requirements. The CFTC, the SEC, the Federal Deposit Insurance Corporation, other regulators and self-regulatory organizations and exchanges are authorized under these statutes, regulations and otherwise to take extraordinary actions in the event of market emergencies. The Fund and the Investment Manager have historically been eligible for exemptions from certain regulations. However, there is no assurance that the Fund and the Investment Manager will continue to be eligible for such exemptions. The CFTC and certain futures exchanges have established limits, referred to as "position limits," on the maximum net long or net short positions which any person may hold or control in particular options and futures contracts.

The CFTC has proposed position limits for certain swaps. All positions owned or controlled by the same person or entity, even if in different accounts, may be aggregated for purposes of determining whether the applicable position limits have been exceeded. Thus, even if the Fund does not intend to exceed applicable position limits, it is possible that different clients managed by the Investment Manager and their related parties may be aggregated for this purpose. Therefore it is possible that the trading decisions of Investment Manager may have to be modified and that positions held by the Fund may have to be liquidated in order to avoid exceeding such limits. The modification of investment decisions or the elimination of open positions, if it occurs, may adversely affect the performance of the Fund.

The SEC has in the past adopted interim rules requiring reporting of all short positions above a certain de minimis threshold and may adopt rules requiring monthly public disclosure in the future. In addition, other non-U.S. jurisdictions where the Fund may trade have adopted reporting requirements. If the Fund's short positions or its strategy become generally known, it could have a significant effect on the Investment Manager's ability to implement its investment strategy. In particular, it would make it more likely that other investors could cause a short squeeze in the securities held short by the Fund forcing the Fund to cover its positions at a loss. Such reporting requirements may also limit the Investment Manager's ability to access management and other personnel at certain companies where the Investment Manager seeks to take a short position. In addition, if other investors engage in copycat behavior by taking positions in the same issuers as the Fund, the cost of borrowing securities to sell short could increase drastically and the availability of such securities to the Fund could decrease drastically. Such events could make the Fund unable to execute its investment strategy. In addition, if the SEC were to adopt restrictions regarding short sales, they could restrict the Fund's ability to engage in short sales in certain circumstances, and the Fund may be unable to execute its investment strategies as a result.

The SEC and regulatory authorities in other jurisdictions may adopt (and in certain cases, have adopted) bans on short sales of certain securities in response to market events. Bans on short selling may make it impossible for the Fund to execute certain investment strategies and may have a material adverse effect on the Fund's ability to generate returns.

Current rules related to credit risk retention requirements for asset backed securities may increase the cost to originators, securitizers and, in certain cases, asset managers of securitization vehicles in which the Fund may invest. The impact of the risk retention rules on the securitization markets is uncertain. These requirements may increase the costs to originators, securitizers, and, in certain cases, collateral managers of securitization vehicles in which the Fund may invest, which costs could be passed along to such Fund as an investor in such vehicles. In addition, the costs imposed by the risk retention rules on originators, securitizers and/or collateral managers may result in a reduction of the number of new offerings of asset-backed securities and thus in fewer investment opportunities for the Fund. A reduction in the number of new securitizations could also reduce liquidity in the markets for certain types of financial assets that are typically held by securitization vehicles, which in turn could negatively affect the returns on the Fund's investment in asset-backed securities.

Actions by governmental entities may also impact certain instruments in which the Fund invests. For example, certain instruments in which the Fund may invest rely in some fashion upon the London Interbank Offered Rate ("LIBOR"). LIBOR is an average interest rate, determined by the ICE Benchmark Administration, that banks charge one another for the use of short-term money. The United Kingdom's Financial Conduct Authority, which regulates LIBOR, has announced plans to phase out the use of LIBOR by the end of 2021. There remains uncertainty regarding the future utilization of LIBOR and the nature of any replacement rate, and any potential effects of the transition away from LIBOR on the Fund or on certain instruments in which the Fund invests are not known. The transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that currently rely on LIBOR. The transition may also result in a reduction in the value of certain instruments held by the Fund or reduce the effectiveness of related Fund transactions such as hedges. Any such effects of the transition away from LIBOR, as well as other unforeseen effects, could result in losses to the Fund.

The Fund has elected to be treated as a regulated investment company under the Code and intends each year to qualify and be eligible to be treated as such. In order to qualify for such treatment, the Fund must meet certain asset diversification tests, derive at least 90% of its gross income for the taxable year from certain types of qualifying income, and distribute to its shareholders at least 90% of its "investment company taxable income" as that term is defined in the Code (which includes, among other things, dividends, taxable interest and the excess of any net short-term capital gains over net long-term capital losses, as reduced by certain deductible expenses).

The Fund's investment strategy will potentially be limited by its intention to qualify for treatment as a regulated investment company and can limit the Fund's ability to qualify and be treated as such. The tax treatment of certain of the Fund's investments under one or more of the qualification or distribution tests applicable to regulated investment companies is not certain. An adverse determination or future guidance by the IRS might affect the Fund's ability to qualify for such treatment.

If, in any year, the Fund were to fail to qualify for treatment as a regulated investment company under the Code, and were ineligible to or did not otherwise cure such failure, the Fund would be subject to tax on its taxable income at corporate rates and, when such income is distributed, shareholders would be subject to a further tax to the extent of the Fund's current or accumulated earnings and profits.

Potential Conflicts of Interest Risk—Allocation of Investment Opportunities

The Investment Manager is involved worldwide with a broad spectrum of financial services and asset management activities and may engage in the ordinary course of business in activities in which their interests or the interests of their clients may conflict with those of the Fund. The Investment Manager may provide investment management services to other funds and discretionary managed accounts that follow an investment program similar to that of the Fund. Subject to the requirements of the 1940 Act, the Investment Manager intends to engage in such activities and may receive compensation from third parties for its services. The results of the Fund's investment activities may differ from those of the Fund's affiliates, or another account managed by the Fund's affiliates, and it is possible that the Fund could sustain losses during periods in which one or more of the Fund's affiliates and/or other accounts achieve profits on their trading for proprietary or other accounts. The Investment Manager has adopted policies and procedures reasonably designed to allocate investment opportunities on a fair and equitable basis over time.

The Fund may enter into repurchase agreements, in which the Fund purchases a security from a bank or broker-dealer, which agrees to repurchase the security at the Fund's cost plus interest within a specified time. If the party agreeing to repurchase should default, the Fund will seek to sell the securities which it holds. This could involve procedural costs or delays in addition to a loss on the securities if their value should fall below their repurchase price. Repurchase agreements maturing in more than seven days and which may not be terminated within seven days at approximately the amount at which the Fund has valued the agreements are considered illiquid securities. These events could also trigger adverse tax consequences for the Fund.

Although the Fund may seek to maintain a stable distribution rate, the Fund's distribution rate may be affected by numerous factors, including but not limited to changes in realized and projected market returns, fluctuations in market interest rates, Fund performance, and other factors. For instance, during periods of low or declining interest rates, the Fund's distributable income and dividend levels may decline for many reasons. There can be no assurance that a change in market conditions or other factors will not result in a change in the Fund's distribution rate or that the rate will be sustainable in the future.

collateralized. Please see "Investment Objectives and Policies—Loans of Portfolio Securities" in the Statement of Additional Information for more details. When the Fund lends portfolio securities, its investment performance will continue to reflect changes in the value of the securities loaned, and the Fund will also receive a fee or interest on the collateral. Securities lending involves the risk of loss of rights in the collateral or delay in recovery of the collateral if the borrower fails to return the security loaned or becomes insolvent. The Fund may pay lending fees to a party arranging the loan. Cash collateral received by the Fund in securities lending transactions may be invested in short-term liquid fixed income instruments or in money market or short-term mutual funds, or similar investment vehicles, including affiliated money market or short-term mutual funds. The Fund bears the risk of such investments.

Investments in zero-coupon and payment-in-kind securities are subject to certain risks, including that market prices of zero-coupon and payment-in-kind securities generally are more volatile than the prices of securities that pay interest periodically and in cash, and are likely to respond to changes in interest rates to a greater degree than other types of debt securities with similar maturities and credit quality. Because zero-coupon securities bear no interest, their prices are especially volatile. And because zero-coupon bondholders do not receive interest payments, the prices of zero-coupon securities generally fall more dramatically than those of bonds that pay interest on a current basis when interest rates rise. However, when interest rates fall, the prices of zero-coupon securities generally rise more rapidly in value than those of similar interest paying bonds. Under many market and other conditions, the market for zero-coupon and payment-in-kind securities may suffer decreased liquidity making it difficult for the Fund to dispose of them or to determine their current value. In addition, as these securities may not pay cash interest, the Fund's investment exposure to these securities and their risks, including credit risk, will increase during the time these securities are held in the Fund's portfolio. Further, to maintain its qualification for treatment as a RIC and to avoid Fund-level U.S. federal income and/or excise taxes, the Fund is required to distribute to its shareholders any income it is deemed to have received in respect of such investments, notwithstanding that cash has not been received currently, and the value of paid-in-kind interest. Consequently, the Fund may have to dispose of portfolio securities under disadvantageous circumstances to generate the cash, or may have to leverage itself by borrowing the cash to satisfy this distribution requirement. The required distributions, if any, would result in an increase in the Fund's exposure to these securities.

By investing through its Subsidiaries, the Fund is exposed to the risks associated with the Subsidiaries' investments. The Subsidiaries are not registered as investment companies under the 1940 Act and are not subject to all of the investor protections of the 1940 Act, although each Subsidiary is managed pursuant to the compliance policies and procedures of the Fund applicable to it. Changes in the laws of the United States and/or the jurisdiction in which a Subsidiary is organized could result in the inability of the Fund and/or the Subsidiary to operate as described in this prospectus and could adversely affect the Fund.

The Investment Manager manages the Fund without regard generally to restrictions on portfolio turnover. The use of futures contracts and other derivative instruments with relatively short maturities may tend to exaggerate the portfolio turnover rate for the Fund. Trading in fixed income securities does not generally involve the payment of brokerage commissions, but does involve indirect transaction costs. The use of futures contracts and other derivative instruments may involve the payment of commissions to futures commission merchants or other intermediaries. Higher portfolio turnover involves correspondingly greater expenses to the Fund, including brokerage commissions or dealer mark-ups and other transaction costs on the sale of securities and reinvestments in other securities. The higher the rate of portfolio turnover of the Fund, the higher these transaction costs borne by the Fund generally will be. Such sales may result in realization of taxable capital gains (including short-term capital gains, which are generally taxed to shareholders at ordinary income tax rates when distributed net of short-term capital losses and net long-term capital losses), and may adversely affect the Fund's after-tax returns. See "Tax Matters."

An investment in the Fund, like any fund, can involve operational risks arising from factors such as processing errors, 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. The occurrence of any of these failures, errors or breaches could result in a loss of information, regulatory scrutiny, reputational damage or other events, any of which could have a material adverse effect on the Fund. While the Fund seeks to minimize such events through controls and oversight, there may still be failures that could cause losses to the Fund.

As the use of technology has become more prevalent in the course of business, the Fund has become potentially more susceptible to operational and informational security risks resulting from breaches in cyber security. A breach in cyber security refers to both intentional and unintentional cyber events that may, among other things, cause the Fund to lose proprietary information, suffer data corruption and/or destruction or lose operational capacity, result in the unauthorized release or other misuse of confidential information, or otherwise disrupt normal business operations. Cyber security breaches may involve unauthorized access to the Fund's digital information systems (e.g., through "hacking" or malicious software coding), but may also result from outside attacks such as denial-of-service attacks (i.e., efforts to make network services unavailable to intended users). In addition, cyber security breaches involving the Fund's third party service providers (including but not limited to advisers, administrators, transfer agents, custodians, distributors and other third parties), trading counterparties or issuers in which the Fund invests can also subject the Fund to many of the same risks associated with direct cyber security breaches. Moreover, cyber security breaches involving trading counterparties or issuers in which the Fund invests could adversely impact such counterparties or issuers and cause the Fund's investments to lose value.

Cyber security failures or breaches may result in financial losses to the Fund and its shareholders. These failures or breaches may also result in disruptions to business operations, potentially resulting in financial losses; interference with the Fund's ability to calculate its NAV, process shareholder transactions or otherwise transact business with shareholders; impediments to trading; violations of applicable privacy and other laws; regulatory fines; penalties; reputational damage; reimbursement or other compensation costs; additional compliance and cyber security risk management costs and other adverse consequences. In addition, substantial costs may be incurred in an attempt to prevent any cyber incidents in the future.

Like with operational risk in general, the Fund has established risk management systems and business continuity plans designed to reduce the risks associated with cyber security. However, there are inherent limitations in these plans and systems, including that certain risks may not have been identified, in large part because different or unknown threats may emerge in the future. As such, there is no guarantee that such efforts will succeed, especially because the Fund does not directly control the cyber security systems of issuers in which the Fund may invest, trading counterparties, or third party service providers to the Fund. There is also a risk that cyber security breaches may not be detected. The Fund and its shareholders could be negatively impacted as a result.

Focusing investments in a small number of issuers increases risk. The Fund is "non-diversified," which means that the Fund may invest a significant portion of its assets in the securities of a small number of issuers than a diversified fund. A fund that invest in a relatively smaller number of issuers are more susceptible to risks associated with a single economic, political or regulatory occurrence than a diversified fund might be. Some of those issuers also may present substantial credit or other risks. Similarly, the Fund may be subject to increased economic, business or political risk to the extent that it invests a substantial portion of its assets in a particular currency, in a group of related industries, in a particular issuer, in the bonds of similar projects or in a narrowly defined geographic area outside the U.S.

Certain broker-dealers may be considered to be affiliated persons of the Fund and/or the Investment Manager due to their possible affiliations with Allianz SE, the ultimate parent of the Investment Manager. Absent an exemption from the SEC or other regulatory relief, the Fund is generally precluded from effecting certain principal transactions with affiliated brokers, and its ability to purchase securities being underwritten by an affiliated broker or a syndicate including an affiliated broker, or to utilize affiliated brokers for agency transactions, is subject to restrictions. This could limit the Fund's ability to engage in securities transactions and take advantage of market opportunities.

The Fund's Amended and Restated Agreement and Declaration of Trust (the "Declaration") includes provisions that could limit the ability of other entities or persons to acquire control of the Fund or to convert the Fund to open-end status. See "Anti-Takeover and Other Provisions in the Declaration of Trust."

This table is intended to assist investors in understanding the various costs and expenses directly or indirectly associated with investing in the Fund. You may qualify for sales charge discounts if you and your family invest, or agree to invest in the future, a certain amount of Class A Common Shares of the Fund or Class A and/or Class A-2 Common Shares of other eligible closed-end interval funds sponsored by PIMCO. More information about these and other discounts is available in the "Plan of Distribution—Share Classes" section on page 74 of this prospectus, Appendix B to this prospectus (Financial Firm-Specific Sales Charge Waivers and Discounts) or from your financial advisor.

1 The Fund does not currently intend to charge a repurchase fee; however, the Fund is permitted to charge a repurchase fee of up to 2.00%.

Annual Fund Operating Expenses (as a percentage of net assets attributable to Common Shares (reflecting leverage attributable to reverse repurchase agreements)):

1 Management fees include fees payable to the Investment Manager for advisory services and for supervisory, administrative and other services. The Fund pays for the advisory, supervisory and administrative services it requires under what is essentially an all-in fee structure (the "unified management fee"). Pursuant to an investment management agreement, PIMCO is paid a Management Fee of 1.30% of the Fund's total managed assets. The Fund (and not PIMCO) will be responsible for certain fees and expenses, which are reflected in the table above, that are not covered by the unified management fee under the investment management agreement. Please see "Management of the Fund - Investment Management Agreement" for an explanation of the unified management fee and definition of "total managed assets."

2 Reflects the Fund's use of leverage in the form of reverse repurchase agreements as of June 30, 2018 which represented 30.68% of the Fund's total managed assets (including assets attributable to reverse repurchase agreements) as of that date, at an estimated annual interest rate cost to the Fund of 2.15% (based on market interest rates as of June 30, 2018). See "Leverage—Effects of Leverage" in the accompanying Prospectus. The actual amount of interest expense borne by the Fund will vary over time in accordance with the level of the Fund's use of reverse repurchase agreements, dollar rolls and/or borrowings and variations in market interest rates. Borrowing expense is required to be treated as an expense of the Fund for accounting purposes. Any associated income or gains (or losses) realized from leverage obtained through such instruments is not reflected in the Annual Expenses table above, but would be reflected in the Fund's performance results.

4 PIMCO has contractually agreed, through November 1, 2019, to waive its management fee, or reimburse the Fund, to the extent that organizational expenses, pro rata share of expenses related to obtaining or maintaining a Legal Entity Identifier and pro rata Trustees' fees exceed 0.07% of the Fund's net assets (the "Expense Limit"). Under an expense limitation agreement, in any month in which the investment management agreement is in effect, PIMCO is entitled to reimbursement by the Fund of any portion of the management fee reduced as set forth above (the "Reimbursement Amount") during the previous thirty-six months, provided that such amount paid to PIMCO will not (1) together with any recoupment of organizational expenses, pro rata share of expenses related to obtaining or maintaining a Legal Entity Identifier and pro rata trustee fees or management fees exceed 0.07% of average net assets; (2) exceed the total Reimbursement Amount; or (3) include any amounts previously reimbursed to PIMCO. For the avoidance of doubt, any reimbursement of PIMCO's management fee pursuant to the expense limitation agreement plus any recoupment of organizational expenses and pro rata Trustees' fees will not exceed the lesser of (i) the expense limit in effect at the time of waiver or reimbursement and (ii) the expense limit in effect at the time of recoupment.

As required by relevant SEC regulations, the following example illustrates the expenses that you would pay on a $1,000 investment in the Common Shares, assuming a 5% annual return⁽¹⁾:

1 The example above should not be considered a representation of future expenses. Actual expenses may be higher or lower than those shown. The example assumes that the estimated Interest Payments on Borrowed Funds and Other Expenses set forth in the Annual Fund Operating Expenses table are accurate, that the Total Annual Fund Operating Expenses (as described above) remain the same for all time periods shown and that all dividends and distributions are reinvested at NAV. Actual expenses may be greater or less than those assumed. Moreover, the Fund's actual rate of return may be greater or less than the hypothetical 5% annual return shown in the example.

The financial highlights table set forth below is intended to help you understand the Fund's recent financial performance. Information shown reflects performance of the Fund's Institutional Class Common Shares. The Fund's Class A Common Shares had not commenced operations as of the Fund's most recent fiscal year end. The information in the table below is for the fiscal periods ended June 30, 2018 and June 30, 2017, audited by PricewaterhouseCoopers LLP ("PwC"), whose report on such financial statements is contained in the Fund's June 30, 2018 annual report and is incorporated by reference into the Statement of Additional Information.

The Fund is a non-diversified, closed-end management investment company registered under the 1940 Act. The Fund continuously offers its Common Shares and is operated as an "interval fund." The Fund currently has two separate classes of Common Shares: Institutional Class and Class A. The Fund was organized as a Massachusetts business trust on October 25, 2016, pursuant to the Declaration, which is governed by the laws of The Commonwealth of Massachusetts. The Fund commenced operations on February 22, 2017, in connection with its initial public offering of Institutional Class Common Shares. The Fund's principal office is located at 1633 Broadway, New York, New York 10019.

The Fund will invest the proceeds of the continuous offering of Common Shares on an ongoing basis in accordance with its investment objectives and policies as stated below. It is currently anticipated that the Fund will be able to invest all or substantially all of the net proceeds according to its investment objectives and policies within approximately three months after receipt of the proceeds, depending on the amount and timing of proceeds available to the Fund as well as the availability of investments consistent with the Fund's investment objectives and policies, and except to the extent proceeds are held in cash to pay dividends or expenses, satisfy repurchase offers or for temporary defensive purposes. Pending such investment, it is anticipated that the proceeds will be invested in high grade, short-term securities, credit-linked trust certificates, and/or high yield securities index futures contracts or similar derivative instruments designed to give the Fund exposure to the securities and markets in which it intends to invest while the PIMCO selects specific investments.

When used in this prospectus, the term "invest" includes both direct investing and indirect investing and the term "investments" includes both direct investments and indirect investments. For example, the Fund may invest indirectly by investing in derivatives or through its wholly-owned and controlled subsidiaries (each, a "Subsidiary"). The Fund may be exposed to the different types of investments described below through its investments in its Subsidiaries. The allocation of the Fund's portfolio in a Subsidiary will vary over time and might not always include all of the different types of investments described herein.

The Fund seeks to achieve its investment objectives by investing, under normal circumstances, across a wide array of global credit sectors, including corporate, mortgage, consumer, emerging market and municipal credit markets, and utilizing a flexible asset allocation strategy among multiple public and private credit sectors, including corporate debt (including, among other things, fixed-, variable- and floating-rate bonds, loans, convertible and contingent convertible securities and stressed, distressed and defaulted debt securities issued by U.S. or foreign (non-U.S.) corporations or other business entities, including emerging market issuers), mortgage-related and other consumer-related instruments, collateralized debt obligations, including, without limitation, collateralized loan obligations, government and sovereign debt, municipal bonds and other fixed-, variable- and floating-rate income-producing securities of U.S. and foreign issuers, including emerging market issuers. The Fund may invest without limit in investment grade debt securities and may invest without limit in below investment grade debt securities (commonly referred to as "high yield" securities or "junk bonds"), including securities of stressed and distressed issuers. No assurance can be given that the Fund's investment objectives will be achieved, and you could lose all of your investment in the Fund. The types of securities and instruments in which the Fund may invest are summarized under "The Fund's Investment Objectives and Policies— Portfolio Management Strategies—Portfolio Contents."

PIMCO serves as the Investment Manager of the Fund and manages the Fund's portfolio. See "Management of the Fund." The portfolio management strategies and techniques to be utilized by PIMCO are described below.

On behalf of the Fund, PIMCO employs an active approach to allocation among credit sectors based on, among other things, market conditions, valuation assessments, economic outlook, credit market trends and other economic factors. With PIMCO's macroeconomic analysis as the basis for top-down investment decisions, including geographic and credit sector emphasis, the Fund expects to focus on seeking attractive risk-adjusted returns across multiple credit sectors. PIMCO may choose to focus on particular countries or regions, asset classes, industries and sectors to the exclusion of others at any time and from time to time based on market conditions and other factors. The relative value assessment within credit sectors draws on PIMCO's regional and sector specialist expertise. As a matter of fundamental policy, the Fund will normally invest at least 25% of its total assets (i.e., concentrate) in mortgage-related assets issued by government agencies or other governmental entities or by private originators or issuers.

Once the Fund's top-down, portfolio positioning decisions have been made as described above, PIMCO generally selects particular investments for the Fund by employing a bottom-up, disciplined credit approach which is driven by fundamental, independent research within each sector represented in the Fund, with a focus on identifying securities and other instruments with solid and/or improving fundamentals.

PIMCO also attempts to identify investments that may appreciate in value based on PIMCO's assessment of the issuer's credit characteristics, forecast

for interest rates and outlook for particular countries/regions, currencies, industries, sectors and the global economy and bond markets generally.

The Fund may invest without limitation in debt instruments that are, at the time of purchase, rated below investment grade (below Baa3 by Moody's or below BBB- by either S&P or Fitch), or unrated but determined by PIMCO to be of comparable quality. The Fund may invest in securities of stressed or distressed issuers, which include securities at risk of being in default as to the repayment of principal and/or interest at the time of acquisition by the Fund or that are rated in the lower rating categories by one or more NRSROs (for example, Ca or lower by Moody's or CC or lower by S&P or Fitch) or, if unrated, are determined by PIMCO to be of comparable quality. The Fund may also invest in defaulted securities and debtor-in-possession financings. Debt instruments of below investment grade quality are regarded as having predominantly speculative characteristics with respect to capacity to pay interest and to repay principal, and are commonly referred to as "high yield" securities or "junk bonds." Debt instruments in the lowest investment grade category also may be considered to possess some speculative characteristics. The Fund may, for hedging, investment or leveraging purposes, make use of credit default swaps, which are contracts whereby one party makes periodic payments to a counterparty in exchange for the right to receive from the counterparty a payment equal to the par (or other agreed-upon) value of a referenced debt obligation in the event of a default or other credit event by the issuer of the debt obligation.

PIMCO relies primarily on its own analysis of the credit quality and risks associated with individual debt instruments considered for the Fund, rather than relying exclusively on rating agencies or third-party research. The Fund's portfolio managers utilize this information in an attempt to minimize credit risk and to identify issuers, industries or sectors that they believe are undervalued or that offer potentially attractive yields relative to PIMCO's assessment of their credit characteristics. This aspect of PIMCO's capabilities will be particularly important to the extent that the Fund invests in high yield securities and in securities of emerging market issuers.

It is expected that the Fund normally will have a short to intermediate average portfolio duration (i.e., within a zero to eight (0 to 8) year range), as calculated by the Investment Manager, although it may be shorter or longer at any time or from time to time depending on market conditions and other factors. While the Fund seeks to maintain a short to intermediate average portfolio duration, there is no limit on the maturity or duration of any individual security in which the Fund may invest. PIMCO believes that maintaining duration within this range offers flexibility and the opportunity to seek above-average returns while potentially limiting exposure to interest rate volatility and related risks. Duration is a measure used to determine the sensitivity of a security's price to changes in interest rates. For example, the value of a portfolio of fixed income securities with an average duration of eight years would generally be expected to decline by approximately 8% if interest rates rose by one percentage point. Duration differs from the "maturity" of a security (which is the date on which the issuer is obligated to repay the principal amount) in that it considers a security's yield, coupon payments, principal payments and call features in addition to the amount of time until maturity. As the value of a security changes over time, so will its duration. The Fund's duration strategy may entail maintaining a negative average portfolio duration from time to time, which would potentially benefit the portfolio in an environment of rising market interest rates, but would generally adversely impact the portfolio in an environment of falling or neutral market interest rates. PIMCO may also utilize certain strategies including, without limitation, investments in structured notes or interest rate futures contracts or swap, cap, floor or collar transactions, for the purpose of reducing the interest rate sensitivity of the Fund's portfolio, although there is no assurance that it will do so or that such strategies will be successful if used.

The Fund will invest, under normal circumstances, at least 80% of its net assets (plus any borrowings for investment purposes) in a portfolio of debt instruments of varying maturities (the "80% policy"). The Fund will not change its 80% policy unless the Fund provides shareholders with the notice required by Rule 35d-1 under the 1940 Act, as it may be amended from time to time.

For purposes of the 80% policy, debt instruments may include, without limitation, bonds, debt securities and other similar instruments of varying maturities issued by various U.S. and foreign (non-U.S.) public- or private-sector entities; structured products, securitizations and other asset-backed securities issued on a public or private basis (including agency and non-agency residential mortgage-backed securities and commercial mortgage-backed securities, CBOs, CLOs, other CDOs and other similarly structured securities); corporate debt securities of U.S. and non-U.S. issuers, including convertible and contingent convertible securities and corporate commercial paper; municipal securities and other debt securities issued by states or local governments and their agencies, authorities and other government-sponsored enterprises, including taxable municipal securities; obligations of foreign governments or their sub-divisions, agencies and government sponsored enterprises and obligations of international agencies and supranational entities; U.S. Government Securities; bank loans (including, among others, senior loans, mezzanine loans, delayed funding loans, revolving credit facilities and loan participations and assignments); loans held and/or originated by private financial institutions, including commercial and residential mortgage loans, corporate loans and consumer loans (such as credit card receivables, automobile loans and student loans) ("private credit assets"); payment-in-kind securities; zero-coupon bonds; inflation-indexed bonds issued by both governments and corporations; structured notes, including hybrid or indexed securities; catastrophe bonds and other event-linked bonds; credit-linked notes; preferred securities; convertible debt securities (i.e., debt securities that may be converted at either a stated price or stated rate into underlying shares of common stock), including synthetic convertible debt securities (i.e., instruments created through a combination of separate securities that possess the two principal characteristics of a traditional convertible security, such as an income-producing security and the right to acquire an equity security); and bank certificates of deposit,

fixed time deposits and bankers' acceptances. The rate of interest on an income-producing instrument may be fixed, floating or variable. At any given time and from time to time substantially all of the Fund's portfolio may consist of below investment grade securities. The Fund may invest in debt securities of stressed and distressed issuers as well as in defaulted securities and debtor-in-possession financings. The Fund may invest in any level of the capital structure of an issuer of mortgage-backed or asset-backed instruments, including the equity or "first loss" tranche. The Fund's investments in derivatives and other synthetic instruments that have economic characteristics similar to debt instruments will be counted toward satisfaction of the 80% policy. For purposes of the Fund's 80% policy, the Fund values its derivative instruments based on their market value and the Fund will also aggregate direct investments with investment held by its wholly-owned and controlled Subsidiaries.

The Fund may invest without limit in securities of U.S. issuers and without limit in securities of foreign (non-U.S.) issuers, securities traded principally outside of the United States, and securities denominated in currencies other than the U.S. dollar. The Fund may invest without limit in short-term investment grade sovereign debt, including short-term investment grade sovereign debt issued by emerging market issuers. The Fund may invest up to 40% of its total assets in securities and instruments that are economically tied to "emerging market" countries other than investments in short-term investment grade sovereign debt, issued by emerging market issuers, where as noted above there is no limit. The Fund may also invest directly in foreign currencies, including currencies of emerging market countries.

The Fund may invest up to 20% of its total assets in common stocks, common shares of other investment companies, such as open-end or closed-end management investment companies and ETFs, and equity securities of REITs. For these purposes, common stocks the Fund has received through the conversion of a convertible security held by the Fund or in connection with the restructuring of a debt security will not count towards this 20% limit. The Fund may invest in securities that have not been registered for public sale in the U.S. or relevant non-U.S. jurisdiction, including without limitation securities eligible for purchase and sale pursuant to Rule 144A under the Securities Act, or relevant provisions of applicable non-U.S. law, and other securities issued in private placements. The Fund may invest in securities of companies with any market capitalization, including small, medium and large capitalizations.

To the extent consistent with the applicable liquidity requirements for interval funds under Rule 23c-3 of the 1940 Act, the Fund may invest without limit in illiquid securities (i.e., securities that cannot be disposed of within seven days in the ordinary course of business at approximately the value at which the Fund has valued the securities).

The Fund may make investments in debt instruments and other securities or instruments directly or through one or more wholly-owned and controlled Subsidiaries. Each Subsidiary may invest, for example, in whole loans or in shares, certificates, notes or other securities representing the right to receive principal and interest payments due on fractions of whole loans or pools of whole loans, or any other security or other instrument that the Fund may hold directly. References herein to the Fund include references to a Subsidiary in respect of the Fund's investment exposure.The allocation of the Fund's portfolio in a Subsidiary will vary over time and might not always include all of the different types of investments described herein.

Temporary defensive investments. Upon PIMCO's recommendation, for temporary defensive purposes, the Fund may deviate from its investment strategy by investing some or all of its total assets in investments such as high grade debt securities, including high quality, short-term debt securities, and cash and cash equivalents. The Fund may not achieve its investment objectives when it does so.

The following provides additional information regarding the types of securities and other instruments in which the Fund will ordinarily invest. A more detailed discussion of these and other instruments and investment techniques that may be used by the Fund is provided under "Investment Objectives and Policies" in the Statement of Additional Information.

The Fund may invest without limit in debt instruments that are, at the time of purchase, rated below investment grade (below Baa3 by Moody's or below BBB- by either S&P or Fitch), or unrated but determined by PIMCO to be of comparable quality. The Fund may invest in securities of stressed or distressed issuers, which include securities at risk of being in default as to the repayment of principal and/or interest at the time of acquisition by the Fund or that are rated in the lower rating categories by one or more NRSROs (for example, Ca or lower by Moody's or CC or lower by S&P or Fitch) or, if unrated, are determined by PIMCO to be of comparable quality. The Fund may invest in defaulted securities and debtor-in-possession financings. Below investment grade securities are commonly referred to as "high yield" securities or "junk bonds." High yield securities involve a greater degree of risk (in particular, a greater risk of default) than, and special risks in addition to the risks associated with, investment grade debt obligations. While offering a greater potential opportunity for capital appreciation and higher yields, high yield securities typically entail greater potential price volatility and may be less liquid than higher-rated securities. High yield securities may be regarded as predominantly speculative with respect to the issuer's continuing ability to make timely principal and interest payments. They also may be more susceptible to real or perceived

adverse economic and competitive industry conditions than higher-rated securities. Debt securities in the lowest investment grade category also may be considered to possess some speculative characteristics by certain ratings agencies.

The market values of high yield securities tend to reflect individual developments of the issuer to a greater extent than do higher-quality securities, which tend to react mainly to fluctuations in the general level of interest rates. In addition, lower-quality debt securities tend to be more sensitive to general economic conditions. Certain emerging market governments that issue high yield securities in which the Fund may invest are among the largest debtors to commercial banks, foreign governments and supranational organizations, such as the World Bank, and may not be able or willing to make principal and/or interest payments as they come due.

Credit ratings and unrated securities. Rating agencies are private services that provide ratings of the credit quality of debt obligations. Appendix A to this prospectus describes the various ratings assigned to debt obligations by Moody's, S&P and Fitch. As noted in Appendix A, Moody's, S&P and Fitch may modify their ratings of securities to show relative standing within a rating category, with the addition of numerical modifiers (1, 2 or 3) in the case of Moody's, and with the addition of a plus (+) or minus (-) sign in the case of S&P and Fitch. Ratings assigned by a rating agency are not absolute standards of credit quality and do not evaluate market risks. Rating agencies may fail to make timely changes in credit ratings, and an issuer's current financial condition may be better or worse than a rating indicates. The Fund will not necessarily sell a security when its rating is reduced below its rating at the time of purchase. The ratings of a debt security may change over time. Moody's, S&P and Fitch monitor and evaluate the ratings assigned to securities on an ongoing basis. As a result, debt instruments held by the Fund could receive a higher rating (which would tend to increase their value) or a lower rating (which would tend to decrease their value) during the period in which they are held by the Fund.

PIMCO does not rely solely on credit ratings, and develops its own analysis of issuer credit quality. The Fund may invest without limit in unrated securities (which are not rated by a rating agency) if PIMCO determines that the security is of comparable quality to a rated security that the Fund may purchase. Unrated securities may be less liquid than comparable rated securities and involve the risk that PIMCO may not accurately evaluate the security's comparative credit quality, which could result in the Fund's portfolio having a higher level of credit and/or high yield risk than PIMCO has estimated or desires for the Fund, and could negatively impact the Fund's performance and/or returns. The Fund may invest a substantial portion of its assets in unrated securities and therefore may be particularly subject to the associated risks. Analysis of the creditworthiness of issuers of high yield securities may be more complex than for issuers of higher-quality debt obligations. To the extent that the Fund invests in high yield and/or unrated securities, the Fund's success in achieving its investment objectives may depend more heavily on the portfolio manager's creditworthiness analysis than if the Fund invested exclusively in higher-quality and rated securities.

The Fund may invest some or all of its assets in U.S. dollar-denominated debt obligations of foreign issuers or supranational government agencies. The Fund may invest up to 25% of its total assets in securities denominated in foreign currencies, including sovereign debt issued by foreign developed and emerging market governments and their respective sub-divisions, agencies or instrumentalities, government sponsored enterprises and supranational government entities, except for investment grade sovereign debt denominated in the relevant country's local currency with less than 1 year remaining to maturity, in which the Fund may invest without limit. Supranational entities include international organizations that are organized or supported by one or more government entities to promote economic reconstruction or development and by international banking institutions and related governmental agencies, except in The Fund may invest in sovereign and other debt securities issued by foreign governments and their respective sub-divisions, agencies or instrumentalities, government sponsored enterprises and supranational government entities. Supranational entities include international organizations that are organized or supported by one or more government entities to promote economic reconstruction or development and by international banking institutions and related governmental agencies. As a holder of such debt securities, the Fund may be requested to participate in the rescheduling of such debt and to extend further loans to governmental entities. In addition, there are generally no bankruptcy proceedings similar to those in the United States by which defaulted foreign debt securities may be collected. Investing in foreign securities involves special risks and considerations not typically associated with investing in U.S. securities. See "Principal Risks of the Fund—Foreign (Non-U.S.) Investment Risk."

PIMCO generally considers an instrument to be economically tied to a non-U.S. country if the issuer is a foreign (non-U.S.) government (or any political subdivision, agency, authority or instrumentality of such government), or if the issuer is organized under the laws of a non-U.S. country. In the case of money market instruments other than commercial paper and certificates of deposit, such instruments will be considered economically tied to a non-U.S. country if the issuer of such money market instrument is organized under the laws of a non-U.S. country. In the case of commercial paper and certificates of deposit, instruments will be considered economically tied to a non-U.S. country if the "country of exposure" of such instrument is a non-U.S. country, as determined by the criteria set forth below. With respect to derivative instruments, PIMCO generally considers such instruments to be economically tied to non-U.S. countries if the underlying assets are foreign currencies (or baskets or indexes of such currencies), or instruments or securities that are issued by foreign governments or issuers organized under the laws of a non-U.S. country (or if the underlying assets are money market instruments other than commercial paper and certificates of deposit, the issuer of such money market instrument is organized under the laws of a non-U.S. country, or, in the case of underlying assets that are commercial paper or certificates of deposit, if the "country of exposure" of such money market instrument is a non-U.S. country). A security's "country of exposure" is determined by PIMCO using certain factors provided by a third-party analytical service provider. The factors are applied in order such that the first factor to result in the assignment of a country determines the "country of

exposure." Both the factors and the order in which they are applied may change in the discretion of PIMCO. The current factors, listed in the order in which they are applied, are: (i) if an asset-backed or other collateralized security, the country in which the collateral backing the security is located; (ii) the "country of risk" of the issuer; (iii) if the security is guaranteed by the government of a country (or any political subdivision, agency, authority or instrumentality of such government), the country of the government or instrumentality providing the guarantee; (iv) the "country of risk" of the issuer's ultimate parent; or (v) the country where the issuer is organized or incorporated under the laws thereof. "Country of risk" is a separate four-part test determined by the following factors, listed in order of importance: (i) management location; (ii) country of primary listing; (iii) sales or revenue attributable to the country; and (iv) reporting currency of the issuer.

The Fund may invest in Brady Bonds, which are securities created through the exchange of existing commercial bank loans to sovereign entities for new obligations in connection with a debt restructuring. Investments in Brady Bonds may be viewed as speculative. Brady Bonds acquired by the Fund may be subject to restructuring arrangements or to requests for new credit, which may cause the Fund to realize a loss of interest or principal on any of its portfolio holdings.

The foreign securities in which the Fund may invest include without limitation Eurodollar obligations and "Yankee Dollar" obligations. Eurodollar obligations are U.S. dollar-denominated certificates of deposit and time deposits issued outside the U.S. capital markets by foreign branches of U.S. banks and by foreign banks. Yankee Dollar obligations are U.S. dollar-denominated obligations issued in the U.S. capital markets by foreign banks. Eurodollar and Yankee Dollar obligations are generally subject to the same risks that apply to domestic debt issues, notably credit risk, interest rate risk, market risk and liquidity risk. Additionally, Eurodollar (and to a limited extent, Yankee Dollar) obligations are subject to certain sovereign risks. One such risk is the possibility that a sovereign country might prevent capital, in the form of U.S. dollars, from flowing across its borders. Other risks include adverse political and economic developments; the extent and quality of government regulation of financial markets and institutions; the imposition of foreign withholding or other taxes; and the expropriation or nationalization of foreign issuers.

The Fund may invest without limit in short-term investment grade sovereign debt, including short-term investment grade sovereign debt issued by emerging market issuers. The Fund may invest up to 40% of its total assets in securities and instruments that are economically tied to "emerging market" countries, other than investments in short-term investment grade sovereign debt issued by emerging market issuers, where as noted above there is no limit. PIMCO generally considers an instrument to be economically tied to an emerging market country if: the issuer is organized under the laws of an emerging market country; the currency of settlement of the security is a currency of an emerging market country; the security is guaranteed by the government of an emerging market country (or any political subdivision, agency, authority or instrumentality of such government); for an asset-backed or other collateralized security, the country in which the collateral backing the security is located is an emerging market country; or the security's "country of exposure" is an emerging market country, as determined by the criteria set forth below. With respect to derivative instruments, PIMCO generally considers such instruments to be economically tied to emerging market countries if the underlying assets are currencies of emerging market countries (or baskets or indexes of such currencies), or instruments or securities that are issued or guaranteed by governments of emerging market countries or by entities organized under the laws of emerging market countries or an instrument's "country of exposure" is an emerging market country. A security's "country of exposure" is determined by PIMCO using certain factors provided by a third-party analytical service provider. The factors are applied in order such that the first factor to result in the assignment of a country determines the "country of exposure." The factors, listed in the order in which they are applied, are: (i) if an asset-backed or other collateralized security, the country in which the collateral backing the security is located; (ii) the "country of risk" of the issuer; (iii) if the security is guaranteed by the government of a country (or any political subdivision, agency, authority or instrumentality of such government), the country of the government or instrumentality providing the guarantee; (iv) the "country of risk" of the issuer's ultimate parent; or (v) the country where the issuer is organized or incorporated under the laws thereof. "Country of risk" is a separate four-part test determined by the following factors, listed in order of importance: (i) management location, (ii) country of primary listing, (iii) sales or revenue attributable to the country, and (iv) reporting currency of the issuer. PIMCO has broad discretion to identify countries that it considers to qualify as emerging markets. Emerging market countries are generally located in Asia, Africa, the Middle East, Latin America and Eastern Europe, but may be in other regions as well. PIMCO will consider emerging market country and currency composition based on its evaluation of relative interest rates, inflation rates, exchange rates, monetary and fiscal policies, trade and current account balances, legal and political developments and any other specific factors it believes to be relevant.

The securities and currency markets of emerging market countries are generally smaller, less developed, less liquid, and more volatile than the securities and currency markets of the United States and other developed markets and disclosure and regulatory standards in many respects are less stringent. There also may be a lower level of monitoring and regulation of securities markets in emerging market countries and the activities of investors in such markets and enforcement of existing regulations may be extremely limited. Government enforcement of existing securities regulations is limited, and any enforcement may be arbitrary and the results may be difficult to predict. In addition, reporting requirements of emerging market countries with respect to the ownership of securities are more likely to be subject to interpretation or changes without prior notice to investors than more developed countries.

Many emerging market countries have experienced substantial, and in some periods extremely high, rates of inflation for many years. Inflation and rapid fluctuations in inflation rates have had and may continue to have negative effects on such countries' economies and securities markets.

Economies of emerging market countries generally are heavily dependent upon international trade and, accordingly, have been and may continue to be affected adversely by trade barriers, exchange controls, managed

adjustments in relative currency values, and other protectionist measures imposed or negotiated by the countries with which they trade. The economies of emerging market countries also have been and may continue to be adversely affected by economic conditions in the countries with which they trade. The economies of emerging market countries may also be predominantly based on only a few industries or dependent on revenues from particular commodities. In addition, custodial services and other investment-related costs may be more expensive in emerging markets than in many developed markets, which could reduce the Fund's income from securities or debt instruments of emerging market country issuers.

Governments of many emerging market countries have exercised and continue to exercise substantial influence over many aspects of the private sector. In some cases, the government owns or controls many companies, including some of the largest in the country. Accordingly, government actions could have a significant effect on economic conditions in an emerging country and on market conditions, prices and yields of securities in the Fund's portfolio.

Emerging market countries are more likely than developed market countries to experience political uncertainty and instability, including the risk of war, terrorism, nationalization, limitations on the removal of funds or other assets, or diplomatic developments that affect investments in these countries. No assurance can be given that adverse political changes will not cause the Fund to suffer a loss of any or all of its investments in emerging market countries or interest/dividend income thereon.

Foreign investment in certain emerging market country securities is restricted or controlled to varying degrees. These restrictions or controls may at times limit or preclude foreign investment in certain emerging market country securities and increase the costs and expenses of the Fund. Certain emerging market countries require governmental approval prior to investments by foreign persons, limit the amount of investment by foreign persons in a particular issuer, limit the investment by foreign persons only to a specific class of securities of an issuer that may have less advantageous rights than the classes available for purchase by domiciliaries of the countries and/or impose additional taxes on foreign investors. Certain emerging market countries may also restrict investment opportunities in issuers in industries deemed important to national interests. Emerging market countries may require governmental approval for the repatriation of investment income, capital or the proceeds of sales of securities by foreign investors.

Also, because publicly traded debt instruments of emerging market issuers represent a relatively recent innovation in the world debt markets, there is little historical data or related market experience concerning the attributes of such instruments under all economic, market and political conditions.

As reflected in the above discussion, investments in emerging market securities involve a greater degree of risk than, and special risks in addition to the risks associated with, investments in domestic securities or in securities of foreign developed countries. See "Principal Risks of the Fund—Emerging Markets Risk."

The Fund's Common Shares are priced in U.S. dollars and the distributions paid by the Fund to Common Shareholders are paid in U.S. dollars. However, a significant portion of the Fund's assets may be denominated in foreign (non-U.S.) currencies and the income received by the Fund from many foreign debt obligations will be paid in foreign currencies. The Fund also may invest in or gain exposure to foreign currencies themselves for investment or hedging purposes. The Fund's investments in securities that trade in, or receive revenues in, foreign currencies will be subject to currency risk, which is the risk that fluctuations in the exchange rates between the U.S. dollar and foreign currencies may negatively affect an investment. See "Principal Risks of the Fund—Currency Risk." The Fund may (but is not required to) hedge some or all of its exposure to foreign currencies through the use of derivative strategies. For instance, the Fund may enter into forward foreign currency exchange contracts, and may buy and sell foreign currency futures contracts and options on foreign currencies and foreign currency futures. A forward foreign currency exchange contract, which involves an obligation to purchase or sell a specific currency at a future date at a price set at the time of the contract, may reduce the Fund's exposure to changes in the value of the currency it will deliver and increase its exposure to changes in the value of the currency it will receive for the duration of the contract. The effect on the value of the Fund is similar to selling securities denominated in one currency and purchasing securities denominated in another currency. Foreign currency transactions, like currency exchange rates, can be affected unpredictably by intervention (or the failure to intervene) by U.S. or foreign governments or central banks, or by currency controls or political developments. Such events may prevent or restrict the Fund's ability to enter into foreign currency transactions, force the Fund to exit a foreign currency transaction at a disadvantageous time or price or result in penalties for the Fund, any of which may result in a loss to the Fund. Contracts to sell foreign currency would limit any potential gain that might be realized by the Fund if the value of the hedged currency increases. The Fund may enter into these contracts to hedge against foreign exchange risk arising from the Fund's investment or anticipated investment in securities denominated in foreign currencies. Suitable hedging transactions may not be available in all circumstances and there can be no assurance that the Fund will engage in such transactions at any given time or from time to time when they would be beneficial. Although PIMCO has the flexibility to engage in such transactions for the Fund, it may determine not to do so or to do so only in unusual circumstances or market conditions. Also, these transactions may not be successful and may eliminate any chance for the Fund to benefit from favorable fluctuations in relevant foreign currencies.

The Fund may also use derivatives contracts for purposes of increasing exposure to a foreign currency or to shift exposure to foreign currency fluctuations from one currency to another. To the extent that it does so, the Fund will be subject to the additional risk that the relative value of currencies will be different than anticipated by PIMCO.

Please see "Investment Objectives and Policies—Non-U.S. Securities," "Investment Objectives and Policies—Foreign Currency Transactions" and "Investment Objectives and Policies—Foreign Currency Exchange-Related Securities" in the Statement of Additional Information for a more detailed

description of the types of foreign investments and foreign currency transactions in which the Fund may invest or engage and their related risks.

The Fund may invest in a variety of mortgage-related and other asset-backed instruments issued by government agencies or other governmental entities or by private originators or issuers.

Mortgage-related assets include, but are not limited to, any security, instrument or other asset that is related to U.S. or non U.S. mortgages, including those issued by private originators or issuers, or issued or guaranteed as to principal or interest by the U.S. Government or its agencies or instrumentalities or by non-U.S. governments or authorities, such as, without limitation, assets representing interests in, collateralized or backed by, or whose values are determined in whole or in part by reference to any number of mortgages or pools of mortgages or the payment experience of such mortgages or pools of mortgages, including Real Estate Mortgage Investment Conduits ("REMICs"), which could include resecuritizations of REMICs ("Re-REMICs"), mortgage pass-through securities, inverse floaters, collateralized mortgage obligations, collateralized loan obligations, multiclass pass-through securities, private mortgage pass- through securities, stripped mortgage securities (generally interest-only and principal-only securities), mortgage-related asset backed securities and mortgage-related loans (including through participations, assignments, originations and whole loans), including commercial and residential mortgage loans. Such mortgage loans may include reperforming loans ("RPLs"), which are loans that have previously been delinquent but are current at the time securitized. Exposures to mortgage-related assets through derivatives or other financial instruments will be considered investments in mortgage-related assets.

Mortgage Pass-Through Securities. Interests in pools of mortgage-related securities differ from other forms of debt securities, which normally provide for periodic payment of interest in fixed amounts with principal payments at maturity or specified call dates. Instead, these securities provide a monthly payment which consists of both interest and principal payments. In effect, these payments are a "pass through" of the monthly payments made by the individual borrowers on their residential or commercial mortgage loans, net of any fees paid to the issuer or guarantor of such securities. Additional payments are caused by repayments of principal resulting from the sale of the underlying property, refinancing or foreclosure, net of fees or costs that may be incurred. Some mortgage-related assets (such as securities issued by GNMA) are described as "modified pass-through." These securities entitle the holder to receive all interest and principal payments owed on the mortgage pool, net of certain fees, at the scheduled payment dates regardless of whether or not the mortgagor actually makes the payment.

The rate of pre-payments on underlying mortgages will affect the price and volatility of a mortgage-related security, and may have the effect of shortening or extending the effective duration of the security relative to what was anticipated at the time of purchase. To the extent that unanticipated rates of prepayment on underlying mortgages increase the effective duration of a mortgage-related security, the volatility of such security can be expected to increase. The mortgage market in the United States has experienced heightened difficulties over the past several years that may adversely affect the performance and market value of mortgage-related investments. Delinquencies and losses on residential and commercial mortgage loans (especially subprime and second-lien residential mortgage loans) generally have increased recently and may continue to increase, and a decline in or flattening of property values (as has recently been experienced and may continue to be experienced in many markets) may exacerbate such delinquencies and losses. Borrowers with adjustable-rate mortgage loans are more sensitive to changes in interest rates, which affect their monthly mortgage payments, and may be unable to secure replacement mortgages at comparably low interest rates. Also, a number of residential mortgage loan originators have recently experienced serious financial difficulties or bankruptcy. Owing largely to the foregoing, reduced investor demand for mortgage loans and mortgage-related securities and increased investor yield requirements have caused limited liquidity in the secondary market for mortgage-related securities, which can adversely affect the market value of mortgage-related securities. It is possible that such limited liquidity in such secondary markets could continue or worsen.

The principal U.S. governmental guarantor of mortgage-related securities is GNMA. GNMA is a wholly owned U.S. Government corporation within the Department of Housing and Urban Development. GNMA is authorized to guarantee, with the full faith and credit of the U.S. Government, the timely payment of principal and interest on securities issued by institutions approved by GNMA (such as savings and loan institutions, commercial banks and mortgage bankers) and backed by pools of mortgages insured by the Federal Housing Administration (the "FHA"), or guaranteed by the Department of Veterans Affairs (the "VA"). Government-related guarantors (i.e., not backed by the full faith and credit of the U.S. Government) include FNMA and FHLMC. FNMA is a government-sponsored corporation the common stock of which is owned entirely by private stockholders. FNMA purchases conventional (i.e., not insured or guaranteed by any government agency) residential mortgages from a list of approved seller/servicers which include state and federally chartered savings and loan associations, mutual savings banks, commercial banks and credit unions and mortgage bankers. Pass-through securities issued by FNMA are guaranteed as to timely payment of principal and interest by FNMA, but are not backed by the full faith and credit of the U.S. Government. FHLMC was created by Congress in 1970 for the purpose of increasing the availability of mortgage credit for residential housing. It is a government-sponsored corporation that issues Participation Certificates ("PCs"), which are pass-through securities, each representing an undivided interest in a pool of residential mortgages. FHLMC guarantees the timely payment of interest and ultimate collection of principal, but PCs are not backed by the full faith and credit of the U.S. Government.

FNMA and FHLMC also securitize RPLs. For example, in FNMA's case, the RPLs are single-family, fixed rate reperforming loans that generally were previously placed in an MBS trust guaranteed by FNMA, purchased from the trust by FNMA and held as a distressed asset after four or more months

of delinquency, and subsequently became current (i.e. performing) again. Such RPLs may have exited delinquency through efforts at reducing defaults (e.g., loan modification). In selecting RPLs for securitization, FNMA follows certain criteria related to length of time the loan has been performing, the type of loan (single-family, fixed rate), and the status of the loan as first lien, among other things. FNMA may include different loan structures and modification programs in the future.

On September 6, 2008, the Federal Housing Finance Agency ("FHFA") placed FNMA and FHLMC into conservatorship. As the conservator, FHFA succeeded to all rights, titles, powers and privileges of FNMA and FHLMC and of any stockholder, officer or director of FNMA and FHLMC with respect to FNMA and FHLMC and the assets of FNMA and FHLMC. FHFA selected a new chief executive officer and chairman of the board of directors for each of FNMA and FHLMC. In connection with the conservatorship, the U.S. Treasury entered into a Senior Preferred Stock Purchase Agreement with each of FNMA and FHLMC pursuant to which the U.S. Treasury will purchase up to an aggregate of $100 billion of each of FNMA and FHLMC to maintain a positive net worth in each enterprise. This agreement contains various covenants that severely limit each enterprise's operations. In exchange for entering into these agreements, the U.S. Treasury received $1 billion of each enterprise's senior preferred stock and warrants to purchase 79.9% of each enterprise's common stock. On February 18, 2009, the U.S. Treasury announced that it was doubling the size of its commitment to each enterprise under the Senior Preferred Stock Program to $200 billion. The U.S. Treasury's obligations under the Senior Preferred Stock Program are for an indefinite period of time for a maximum amount of $200 billion per enterprise. On December 24, 2009, the U.S. Treasury announced further amendments to the Senior Preferred Stock Purchase Agreements which included additional financial support to certain governmentally supported entities, including the FHLBs, FNMA and FHLMC. There is no assurance that the obligations of such entities will be satisfied in full, or that such obligations will not decrease in value or default. It is difficult, if not impossible, to predict the future political, regulatory or economic changes that could impact the FNMA, FHLMC and the FHLBs, and the values of their related securities or obligations.

FNMA and FHLMC are continuing to operate as going concerns while in conservatorship and each remain liable for all of its obligations, including its guaranty obligations, associated with its mortgage-backed securities.

Under the Federal Housing Finance Regulatory Reform Act of 2008 (the "Reform Act"), which was included as part of the Housing and Economic Recovery Act of 2008, FHFA, as conservator or receiver, has the power to repudiate any contract entered into by FNMA or FHLMC prior to FHFA's appointment as conservator or receiver, as applicable, if FHFA determines, in its sole discretion, that performance of the contract is burdensome and that repudiation of the contract promotes the orderly administration of FNMA's or FHLMC's affairs. The Reform Act requires FHFA to exercise its right to repudiate any contract within a reasonable period of time after its appointment as conservator or receiver. FHFA, in its capacity as conservator, has indicated that it has no intention to repudiate the guaranty obligations of FNMA or FHLMC because FHFA views repudiation as incompatible with the goals of the conservatorship. However, in the event that FHFA, as conservator or if it is later appointed as receiver for FNMA or FHLMC, were to repudiate any such guaranty obligation, the conservatorship or receivership estate, as applicable, would be liable for actual direct compensatory damages in accordance with the provisions of the Reform Act. Any such liability could be satisfied only to the extent of FNMA's or FHLMC's assets available therefor. In the event of repudiation, the payments of interest to holders of FNMA or FHLMC mortgage-backed securities would be reduced if payments on the mortgage loans represented in the mortgage loan groups related to such mortgage-backed securities are not made by the borrowers or advanced by the servicer. Any actual direct compensatory damages for repudiating these guaranty obligations may not be sufficient to offset any shortfalls experienced by such mortgage-backed security holders. Further, in its capacity as conservator or receiver, FHFA has the right to transfer or sell any asset or liability of FNMA or FHLMC without any approval, assignment or consent. Although FHFA has stated that it has no present intention to do so, if FHFA, as conservator or receiver, were to transfer any such guaranty obligation to another party, holders of FNMA or FHLMC mortgage-backed securities would have to rely on that party for satisfaction of the guaranty obligation and would be exposed to the credit risk of that party. In addition, certain rights provided to holders of mortgage-backed securities issued by FNMA and FHLMC under the operative documents related to such securities may not be enforced against FHFA, or enforcement of such rights may be delayed, during the conservatorship or any future receivership. The operative documents for FNMA and FHLMC mortgage-backed securities may provide (or with respect to securities issued prior to the date of the appointment of the conservator may have provided) that upon the occurrence of an event of default on the part of FNMA or FHLMC, in its capacity as guarantor, which includes the appointment of a conservator or receiver, holders of such mortgage-backed securities have the right to replace FNMA or FHLMC as trustee if the requisite percentage of mortgage-backed securities holders consent. The Reform Act prevents mortgage-backed security holders from enforcing such rights if the event of default arises solely because a conservator or receiver has been appointed. The Reform Act also provides that no person may exercise any right or power to terminate, accelerate or declare an event of default under certain contracts to which FNMA or FHLMC is a party, or obtain possession of or exercise control over any property of FNMA or FHLMC, or affect any contractual rights of FNMA or FHLMC, without the approval of FHFA, as conservator or receiver, for a period of 45 or 90 days following the appointment of FHFA as conservator or receiver, respectively.

Commercial banks, savings and loan institutions, private mortgage insurance companies, mortgage bankers and other secondary market issuers also create pass-through pools of conventional residential mortgage loans. Such issuers may be the originators and/or servicers of the underlying mortgage loans as well as the guarantors of the mortgage-related securities. Pools created by such non-governmental issuers generally offer a higher rate of interest than government and government-related pools because there are no direct or indirect government or agency guarantees of payments in the former pools. However, timely payment of interest and principal of these pools may be supported by various forms of insurance or guarantees, including individual loan, title, pool and hazard insurance and letters of credit, which may be issued by governmental entities or private insurers. Such insurance and guarantees and the creditworthiness of the

issuers thereof will be considered in determining whether a mortgage-related security should be purchased for the Fund. There can be no assurance that the private insurers or guarantors can meet their obligations under the insurance policies or guarantee arrangements. The Fund may, however, invest in mortgage-related securities without insurance or guarantees if PIMCO believes that the securities will help to achieve the Fund's investment objectives. Securities issued by certain private organizations may not be readily marketable.

Privately Issued Mortgage-Related Securities. Commercial banks, savings and loan institutions, private mortgage insurance companies, mortgage bankers and other secondary market issuers also create pass-through pools of conventional residential mortgage loans. Such issuers may be the originators and/or servicers of the underlying mortgage loans as well as the guarantors of the mortgage-related securities. Pools created by such non-governmental issuers generally offer a higher rate of interest than government and government-related pools because there are no direct or indirect government or agency guarantees of payments in the former pools. However, timely payment of interest and principal of these pools may be supported by various forms of insurance or guarantees, including individual loan, title, pool and hazard insurance and letters of credit, which may be issued by governmental entities or private insurers. Such insurance and guarantees and the creditworthiness of the issuers thereof will be considered in determining whether a mortgage-related security meets the Fund's investment quality standards. There can be no assurance that insurers or guarantors can meet their obligations under the insurance policies or guarantee arrangements. The Fund may buy mortgage-related securities without insurance or guarantees if, through an examination of the loan experience and practices of the originators/servicers and poolers, PIMCO determines that the securities meet the Fund's quality standards. Securities issued by certain private organizations may not be readily marketable.

Privately issued mortgage-related securities are not subject to the same underwriting requirements for the underlying mortgages that are applicable to those mortgage-related securities that have a government or government-sponsored entity guarantee. As a result, the mortgage loans underlying privately issued mortgage-related securities may, and frequently do, have less favorable collateral, credit risk or other underwriting characteristics than government or government-sponsored mortgage-related securities and have wider variances in a number of terms including interest rate, term, size, purpose and borrower characteristics. Mortgage pools underlying privately issued mortgage-related securities more frequently include second mortgages, high loan-to-value ratio mortgages and manufactured housing loans, in addition to commercial mortgages and other types of mortgages where a government or government-sponsored entity guarantee is not available. The coupon rates and maturities of the underlying mortgage loans in a privately-issued mortgage-related securities pool may vary to a greater extent than those included in a government guaranteed pool, and the pool may include subprime mortgage loans. Subprime loans are loans made to borrowers with weakened credit histories or with a lower capacity to make timely payments on their loans. For these reasons, the loans underlying these securities have had in many cases higher default rates than those loans that meet government underwriting requirements.

The risk of non-payment is greater for mortgage-related securities that are backed by loans that were originated under weak underwriting standards, including loans made to borrowers with limited means to make repayment. A level of risk exists for all loans, although, historically, the poorest performing loans have been those classified as subprime. Other types of privately issued mortgage-related securities, such as those classified as pay-option adjustable rate or Alt-A have also performed poorly. Even loans classified as prime have experienced higher levels of delinquencies and defaults. The substantial decline in real property values across the U.S. has exacerbated the level of losses that investors in privately issued mortgage-related securities have experienced. It is not certain when these trends may reverse. Market factors that may adversely affect mortgage loan repayment include adverse economic conditions, unemployment, a decline in the value of real property, or an increase in interest rates.

Privately issued mortgage-related securities are not traded on an exchange and there may be a limited market for the securities, especially when there is a perceived weakness in the mortgage and real estate market sectors. Without an active trading market, mortgage-related securities held in a Fund's portfolio may be particularly difficult to value because of the complexities involved in assessing the value of the underlying mortgage loans.

The Fund may purchase privately issued mortgage-related securities that are originated, packaged and serviced by third party entities. It is possible these third parties could have interests that are in conflict with the holders of mortgage-related securities, and such holders (such as the Fund) could have rights against the third parties or their affiliates. For example, if a loan originator, servicer or its affiliates engaged in negligence or willful misconduct in carrying out its duties, then a holder of the mortgage-related security could seek recourse against the originator/servicer or its affiliates, as applicable. Also, as a loan originator/servicer, the originator/servicer or its affiliates may make certain representations and warranties regarding the quality of the mortgages and properties underlying a mortgage-related security. If one or more of those representations or warranties is false, then the holders of the mortgage-related securities (such as the Fund) could trigger an obligation of the originator/servicer or its affiliates, as applicable, to repurchase the mortgages from the issuing trust.

Notwithstanding the foregoing, many of the third parties that are legally bound by trust and other documents have failed to perform their respective duties, as stipulated in such trust and other documents, and investors have had limited success in enforcing terms. To the extent third party entities involved with privately issued mortgage-related securities are involved in litigation relating to the securities, actions may be taken that are adverse to the interests of holders of the mortgage-related securities, including the Fund. For example, third parties may seek to withhold proceeds due to holders of the mortgage-related securities, including the Fund, to cover legal or related costs. Any such action could result in losses to the Fund.

PIMCO seeks to manage the portion of the Fund's assets committed to privately issued mortgage-related securities in a manner consistent with the Fund's investment objectives, policies and overall portfolio risk profile. In

determining whether and how much to invest in privately issued mortgage-related securities, and how to allocate those assets, PIMCO will consider a number of factors. These include, but are not limited to: (1) the nature of the borrowers (e.g., residential vs. commercial); (2) the collateral loan type (e.g., for residential: First Lien - Jumbo/Prime, First Lien - Alt-A, First Lien -Subprime, First Lien - Pay-Option or Second Lien; for commercial: Conduit, Large Loan or Single Asset / Single Borrower); and (3) in the case of residential loans, whether they are fixed rate or adjustable mortgages. Each of these criteria can cause privately issued mortgage-related securities to have differing primary economic characteristics and distinguishable risk factors and performance characteristics.

Collateralized Mortgage Obligations. A CMO is a debt obligation of a legal entity that is collateralized by mortgages and divided into classes. Similar to a bond, interest and prepaid principal is paid, in most cases, on a monthly basis. CMOs may be collateralized by whole mortgage loans or private mortgage bonds, but are generally collateralized by portfolios of mortgage pass-through securities guaranteed by GNMA, FHLMC or FNMA and their income streams. CMOs are structured into multiple classes, often referred to as "tranches," with each class bearing a different stated maturity and entitled to a different schedule for payments of principal and interest, including prepayments. The riskiest portion is the "equity" tranche which bears the bulk of defaults and serves to protect the other, more senior tranches from default in all but the most severe circumstances. Actual maturity and average life will depend upon the pre-payment experience of the collateral. In the case of certain CMOs (known as "sequential pay" CMOs), payments of principal received from the pool of underlying mortgages, including prepayments, are applied to the classes of CMOs in the order of their respective final distribution dates. Thus, no payment of principal will be made to any class of sequential pay CMOs until all other classes having an earlier final distribution date have been paid in full. CMOs may be less liquid and may exhibit greater price volatility than other types of mortgage- or asset-backed instruments.

Commercial Mortgage-Backed Securities. CMBSs include securities that reflect an interest in, and are secured by, mortgage loans on commercial real property. Many of the risks of investing in commercial mortgage-backed securities reflect the risks of investing in the real estate securing the underlying mortgage loans. These risks reflect the effects of local and other economic conditions on real estate markets, the ability of tenants to make loan payments and the ability of a property to attract and retain tenants. Commercial mortgage-backed securities may be less liquid and exhibit greater price volatility than other types of mortgage- or asset-backed instruments.

CMO Residuals. CMO residuals are mortgage securities issued by agencies or instrumentalities of the U.S. Government or by private originators of, or investors in, mortgage loans, including savings and loan associations, homebuilders, mortgage banks, commercial banks, investment banks and special purpose entities of the foregoing. The cash flow generated by the mortgage assets underlying a series of a CMO is applied first to make required payments of principal and interest on the CMO and second to pay the related administrative expenses and any management fee of the issuer. The residual in a CMO structure generally represents the interest in any excess cash flow remaining after making the foregoing payments. Each payment of such excess cash flow to a holder of the related CMO residual represents income and/or a return of capital. The amount of residual cash flow resulting from a CMO will depend on, among other things, the characteristics of the mortgage assets, the coupon rate of each class of CMO, prevailing interest rates, the amount of administrative expenses and the prepayment experience on the mortgage assets. In particular, the yield to maturity on CMO residuals is extremely sensitive to prepayments on the related underlying mortgage assets, in the same manner as an interest-only (or IO) class of stripped mortgage-backed securities (described below). In addition, if a series of a CMO includes a class that bears interest at an adjustable rate, the yield to maturity on the related CMO residual will also be extremely sensitive to changes in the level of the index upon which interest rate adjustments are based. As described below with respect to stripped mortgage-backed securities, in certain circumstances the Fund may fail to recoup fully its initial investment in a CMO residual. CMO residuals are generally purchased and sold by institutional investors through several investment banking firms acting as brokers or dealers. CMO residuals may, or pursuant to an exemption therefrom, may not, have been registered under the Securities Act. CMO residuals, whether or not registered under the Securities Act, may be subject to certain restrictions on transferability.

Adjustable Rate Mortgage-Backed Securities. ARMs have interest rates that reset at periodic intervals. Acquiring ARMs permits the Fund to participate in increases in prevailing current interest rates through periodic adjustments in the coupons of mortgages underlying the pool on which ARMs are based. Such ARMs generally have higher current yield and lower price fluctuations than is the case with more traditional fixed income debt securities of comparable rating and maturity. In addition, when prepayments of principal are made on the underlying mortgages during periods of rising interest rates, the Fund can reinvest the proceeds of such prepayments at rates higher than those at which they were previously invested. Mortgages underlying most ARMs, however, have limits on the allowable annual or lifetime increases that can be made in the interest rate that the mortgagor pays. Therefore, if current interest rates rise above such limits over the period of the limitation, the Fund, when holding an ARM, does not benefit from further increases in interest rates. Moreover, when interest rates are in excess of coupon rates (i.e., the rates being paid by mortgagors) of the mortgages, ARMs behave more like fixed income securities and less like adjustable-rate securities and are subject to the risks associated with fixed income securities. In addition, during periods of rising interest rates, increases in the coupon rate of adjustable-rate mortgages generally lag current market interest rates slightly, thereby creating the potential for capital depreciation on such securities.

Stripped Mortgage-Backed Securities. SMBSs are derivative multi-class mortgage securities. SMBSs may be issued by agencies or instrumentalities of the U.S. Government, or by private originators of, or investors in, mortgage loans, including savings and loan associations, mortgage banks, commercial banks, investment banks and special purpose entities of the foregoing. SMBSs are usually structured with two classes that receive different proportions of the interest and principal distributions on a pool of mortgage assets. A common type of SMBS will have one class receiving some of the interest and most of the principal from the mortgage

assets, while the other class will receive most of the interest and the remainder of the principal. In the most extreme case, one class will receive all of the interest (the IO class), while the other class will receive all of the principal (the principal-only or PO class). The yield to maturity on an IO class is extremely sensitive to the rate of principal payments (including prepayments) on the related underlying mortgage assets, and a rapid rate of principal payments may have a material adverse effect on the Fund's yield to maturity from these securities. If the underlying mortgage assets experience greater than anticipated prepayments of principal, the Fund may fail to recoup some or all of its initial investment in these securities even if the security is in one of the highest rating categories.

Collateralized Bond Obligations, Collateralized Loan Obligations and other Collateralized Debt Obligations. The Fund may invest in each of CBOs, CLOs, other CDOs and other similarly structured securities. CBOs, CLOs and CDOs are types of asset-backed securities. A CBO is a trust which is often backed by a diversified pool of high risk, below investment grade fixed income securities. The collateral can be from many different types of fixed income securities such as high-yield debt, residential privately-issued mortgage-related securities, commercial privately-issued mortgage-related securities, trust preferred securities and emerging market debt. A CLO is a trust typically collateralized by a pool of loans, which may include, among others, domestic and foreign senior secured loans, senior unsecured loans and subordinate corporate loans, including loans that may be rated below investment grade or equivalent unrated loans. Other CDOs are trusts backed by other types of assets representing obligations of various parties. CBOs, CLOs and other CDOs may charge management fees and administrative expenses. For CBOs, CLOs and CDOs, the cash flows from the trust are split into two or more portions, called tranches, varying in risk and yield. The riskiest portion is the "equity" tranche which bears the bulk of defaults from the bonds or loans in the trust and serves to protect the other, more senior tranches from default in all but the most severe circumstances. Since they are partially protected from defaults, senior tranches from a CBO trust, CLO trust or trust of another CDO typically have higher ratings and lower yields than their underlying securities, and can be rated investment grade. Despite the protection from the equity tranche, CBO, CLO or other CDO tranches can experience substantial losses due to actual defaults, increased sensitivity to defaults due to collateral default and disappearance of protecting tranches, market anticipation of defaults, as well as aversion to CBO, CLO or other CDO securities as a class. The Fund may invest in any tranche, including the equity tranche, of a CBO, CLO or other CDO. The risks of an investment in a CBO, CLO or other CDO depend largely on the type of the collateral securities and the class of the instrument in which the Fund invests. Normally, CBOs, CLOs and other CDOs are privately offered and sold, and thus, are not registered under the securities laws. As a result, investments in CBOs, CLOs and other CDOs may be characterized by the Fund as illiquid securities, however an active dealer market may exist for CBOs, CLOs and other CDOs allowing them to qualify for Rule 144A under the Securities Act. In addition to the normal risks associated with debt instruments discussed elsewhere in this prospectus and in the Statement of Additional Information (e.g., prepayment risk, credit risk, liquidity risk, market risk, structural risk, legal risk and interest rate risk (which may be exacerbated if the interest rate payable on a structured financing changes based on multiples of changes in interest rates or inversely to changes in interest rates) and default risk), CBOs, CLOs and other CDOs may carry additional risks including, but are not limited to: (i) the possibility that distributions from collateral securities will not be adequate to make interest or other payments; (ii) the possibility that the quality of the collateral may decline in value or default; (iii) the possibility that investments in CBOs, CLOs and other CDOs are subordinate to other classes or tranches thereof; and (iv) the complex structure of the security may not be fully understood at the time of investment and may produce disputes with the issuer or unexpected investment results.

Asset-Backed Securities. Asset-backed securities ("ABS") are bonds backed by pools of loans or other receivables. ABS are created from many types of assets, including auto loans, credit card receivables, home equity loans and student loans. ABS are typically issued through special purpose vehicles that are bankruptcy remote from the issuer of the collateral. The credit quality of an ABS transaction depends on the performance of the underlying assets. To protect ABS investors from the possibility that some borrowers could miss payments or even default on their loans, ABS include various forms of credit enhancement. Some ABS, particularly home equity loan ABS, are subject to interest rate risk and prepayment risk. A change in interest can affect the pace of payments on the underlying loans, which in turn affects total return on the securities. ABS also carry credit or default risk. If many borrowers on the underlying loans default, losses could exceed the credit enhancement level and result in losses to investors in an ABS. In addition, ABS have structural risk due to a unique characteristic known as early amortization, or early payout, risk. Built into the structure of most ABS are triggers for early payout, designed to protect investors from losses. These triggers are unique to each transaction and can include a big rise in defaults on the underlying loans, a sharp drop in the credit enhancement level or even the bankruptcy of the originator. Once early amortization begins, all incoming loan payments (after expenses are paid) are used to pay investors as quickly as possible based upon a predetermined priority of payment.

Please see "Investment Objectives and Policies—Mortgage-Related and Other Asset-Backed Instruments" in the Statement of Additional Information and "Principal Risks of the Fund—Mortgage-Related and Asset-Backed Instruments Risk" in this prospectus for a more detailed description of the types of mortgage-related and other asset-backed instruments in which the Fund may invest and their related risks.

Municipal bonds share the attributes of debt/fixed income securities in general, but are generally issued by states, municipalities and other political subdivisions, agencies, authorities and instrumentalities of states and multi-state agencies or authorities, and may be either taxable or tax-exempt instruments. The municipal bonds that the Fund may purchase include, without limit, general obligation bonds and limited obligation bonds (or revenue bonds), including industrial development bonds issued pursuant to former federal tax law. General obligation bonds are obligations involving the credit of an issuer possessing taxing power and are payable from such issuer's general revenues and not from any particular source. Limited obligation bonds are payable only from the revenues derived from a particular facility or class of facilities or, in some cases, from the proceeds of

a special excise or other specific revenue source. Tax exempt private activity bonds and industrial development bonds generally are also limited obligation bonds and thus are not payable from the issuer's general revenues. The credit and quality of private activity bonds and industrial development bonds are usually related to the credit of the corporate user of the facilities. Payment of interest on and repayment of principal of such bonds is the responsibility of the corporate user (and/or any guarantor).

The Fund may invest in Build America Bonds, which are tax credit bonds created by the American Recovery and Reinvestment Act of 2009, which authorizes state and local governments to issue Build America Bonds as taxable bonds in 2009 and 2010, without volume limitations, to finance any capital expenditures for which such issuers could otherwise issue traditional tax-exempt bonds. State and local governments may receive a direct federal subsidy payment for a portion of their borrowing costs on Build America Bonds equal to 35% of the total coupon interest paid to investors. The state or local government issuer can elect to either take the federal subsidy or pass the 35% tax credit along to bondholders. The Fund's investments in Build America Bonds will result in taxable income and the Fund may elect to pass through to shareholders the corresponding tax credits. The tax credits can generally be used to offset federal income taxes and the alternative minimum tax, but such credits are generally not refundable. Build America Bonds involve similar risks as municipal bonds, including credit and market risk. They are intended to assist state and local governments in financing capital projects at lower borrowing costs and are likely to attract a broader group of investors than tax-exempt municipal bonds. For example, taxable funds, such as the Fund, may choose to invest in Build America Bonds. Although Build America Bonds were only authorized for issuance during 2009 and 2010, the program may have resulted in reduced issuance of tax-exempt municipal bonds during the same period. The Build America Bond program expired on December 31, 2010, at which point no further issuance of new Build America Bonds was permitted. As of the date of this prospectus, there is no indication that Congress will renew the program to permit issuance of new Build America Bonds.

The Fund may invest in pre-refunded municipal bonds. Pre-refunded municipal bonds are bonds that have been refunded to a call date prior to the final maturity of principal, or, in the case of pre-refunded municipal bonds commonly referred to as "escrowed-to-maturity bonds," to the final maturity of principal, and remain outstanding in the municipal market. The payment of principal and interest of the pre-refunded municipal bonds held by the Fund is funded from securities in a designated escrow account that holds U.S. Treasury securities or other obligations of the U.S. Government (including its agencies and instrumentalities ("Agency Securities")). Interest payments on pre-funded municipal bonds issued on or prior to December 31, 2017 are exempt from federal income tax; pre-funded municipal bonds issued after December 31, 2017 will not qualify for such tax-advantaged treatment. Pre-refunded municipal bonds usually will bear an AAA/Aaa rating (if a re-rating has been requested and paid for) because they are backed by U.S. Treasury securities or Agency Securities. Because the payment of principal and interest is generated from securities held in an escrow account established by the municipality and an independent escrow agent, the pledge of the municipality has been fulfilled and the original pledge of revenue by the municipality is no longer in place. The escrow account securities pledged to pay the principal and interest of the pre-refunded municipal bond do not guarantee the price movement of the bond before maturity. Issuers of municipal bonds refund in advance of maturity the outstanding higher cost debt and issue new, lower cost debt, placing the proceeds of the lower cost issuance into an escrow account to pre-refund the older, higher cost debt. Investment in pre-refunded municipal bonds held by the Fund may subject the Fund to interest rate risk and market risk. In addition, while a secondary market exists for pre-refunded municipal bonds, if the Fund sells pre-refunded municipal bonds prior to maturity, the price received may be more or less than the original cost, depending on market conditions at the time of sale.

The Fund may invest in municipal lease obligations. A lease is not a full faith and credit obligation of the issuer and is usually backed only by the borrowing government's unsecured pledge to make annual appropriations for lease payments. There have been challenges to the legality of lease financing in numerous states, and, from time to time, certain municipalities have considered not appropriating money for lease payments. In deciding whether to purchase a lease obligation for the Fund, PIMCO will assess the financial condition of the borrower, the merits of the project, the level of public support for the project and the legislative history of lease financing in the state. These securities may be less readily marketable than other municipal securities.

Some longer-term municipal bonds give the investor the right to "put" or sell the security at par (face value) within a specified number of days following the investor's request—usually one to seven days. This demand feature enhances a security's liquidity by shortening its effective maturity and enables it to trade at a price equal to or very close to par. If a demand feature terminates prior to being exercised, the Fund would hold the longer-term security, which could experience substantially more volatility.

The Fund may invest in municipal warrants, which are essentially call options on municipal bonds. In exchange for a premium, municipal warrants give the purchaser the right, but not the obligation, to purchase a municipal bond in the future. The Fund may purchase a warrant to lock in forward supply in an environment in which the current issuance of bonds is sharply reduced. Like options, warrants may expire worthless and may have reduced liquidity.

The Fund may invest in municipal bonds with credit enhancements such as letters of credit, municipal bond insurance and standby bond purchase agreements ("SBPAs"). Letters of credit are issued by a third party, usually a bank, to enhance liquidity and to ensure repayment of principal and any accrued interest if the underlying municipal bond should default. Municipal bond insurance, which is usually purchased by the bond issuer from a private, nongovernmental insurance company, provides an unconditional and irrevocable guarantee that the insured bond's principal and interest will be paid when due. Insurance does not guarantee the price of the bond. The credit rating of an insured bond reflects the credit rating of the insurer, based on its claims-paying ability. The obligation of a municipal bond insurance company to pay a claim extends over the life of each insured bond. Although defaults on insured municipal bonds have been low to date and municipal bond insurers have met their claims, there is no assurance that this will continue. A higher-than expected default rate could strain the

insurer's loss reserves and adversely affect its ability to pay claims to bondholders. Because a significant portion of insured municipal bonds that have been issued and are outstanding is insured by a small number of insurance companies, not all of which have the highest credit rating, an event involving one or more of these insurance companies, such as a credit rating downgrade, could have a significant adverse effect on the value of the municipal bonds insured by such insurance company or companies and on the municipal bond markets as a whole. An SBPA is a liquidity facility provided to pay the purchase price of bonds that cannot be re-marketed. The obligation of the liquidity provider (usually a bank) is only to advance funds to purchase tendered bonds that cannot be re-marketed and does not cover principal or interest under any other circumstances. The liquidity provider's obligations under the SBPA are usually subject to numerous conditions, including the continued creditworthiness of the underlying borrower.

The Fund may purchase indebtedness and participations in loans held and/or orginated by private financial institutions, including commercial and residential mortgage loans, corporate loans and consumer loans, as well as interests and/or servicing or similar rights in such loans. Such investments may be secured or unsecured and may be newly-originated (and may be specifically designed for the Fund). Indebtedness is different from traditional debt securities in that debt securities are part of a large issue of securities to the public and indebtedness may not be a security, but may represent a specific loan to a borrower. Loan participations typically represent direct participation, together with other parties, in a loan to a borrower, and generally are offered by banks or other financial institutions or lending syndicates. The Fund may participate in such syndications, or can buy part of a loan, becoming a part lender. When purchasing indebtedness and loan participations, the Fund assumes the credit risk associated with the borrower and may assume the credit risk associated with an interposed bank or other financial intermediary. The indebtedness and loan participations that the Fund may acquire may not be rated by any NRSRO.

A loan is often administered by an agent bank acting as agent for all holders. The agent bank administers the terms of the loan, as specified in the loan agreement. In addition, the agent bank is normally responsible for the collection of principal and interest payments from the borrower and the apportionment of these payments to the credit of all institutions which are parties to the loan agreement. Unless, under the terms of the loan or other indebtedness, the Fund has direct recourse against the borrower, the Fund may have to rely on the agent bank or other financial intermediary to apply appropriate credit remedies against a borrower.

A financial institution's employment as agent bank might be terminated in the event that it fails to observe a requisite standard of care or becomes insolvent. A successor agent bank would generally be appointed to replace the terminated agent bank, and assets held by the agent bank under the loan agreement would likely remain available to holders of such indebtedness. However, if assets held by the agent bank for the benefit of the Fund were determined to be subject to the claims of the agent bank's general creditors, the Fund might incur certain costs and delays in realizing payment on a loan or loan participation and could suffer a loss of principal and/or interest. In situations involving other interposed financial institutions (e.g., an insurance company or governmental agency) similar risks may arise.

Purchasers of loans and other forms of direct indebtedness depend primarily upon the creditworthiness of the borrower for payment of principal and interest. If the Fund does not receive scheduled interest or principal payments on such indebtedness, the NAV, market share price and/ or yield of the Common Shares could be adversely affected. Loans that are fully secured offer the Fund more protection than an unsecured loan in the event of non-payment of scheduled interest or principal. However, there is no assurance that the liquidation of collateral from a secured loan would satisfy the borrower's obligation, or that the collateral could be liquidated. In the event of the bankruptcy of a borrower, the Fund could experience delays or limitations in its ability to realize the benefits of any collateral securing a loan.

The Fund may acquire loans and loan participations, or originate loans with credit quality comparable to that of issuers of its securities investments. Indebtedness of companies whose creditworthiness is poor and/or subprime in quality involves substantially greater risks, and may be highly speculative. Some companies may never pay off their indebtedness, or may pay only a small fraction of the amount owed.

Consequently, when holding indebtedness of companies with poor credit, the Fund bears a substantial risk of losing the entire amount invested. The Fund may acquire indebtedness and loan participations to achieve income and/or capital appreciation.

The Fund will limit the amount of its total assets that it will invest in issuers within the same industry (except with respect to the Fund's policy to concentrate in mortgage-related assets). For purposes of this limit, the Fund generally will treat the corporate borrower as the "issuer" of indebtedness held by the Fund. In the case of loan participations where a bank or other lending institution serves as a financial intermediary between the Fund and the corporate borrower, if the participation does not shift to the Fund the direct debtor-creditor relationship with the corporate borrower, SEC interpretations require the Fund to treat both the lending bank or other lending institution and the corporate borrower as "issuers." Treating a financial intermediary as an issuer of indebtedness may restrict the Fund's ability to invest in indebtedness related to a single financial intermediary, or a group of intermediaries engaged in the same industry, even if the underlying borrowers represent many different companies and industries.

Loans and other types of direct indebtedness (which the Fund may purchase or otherwise gain exposure to) may not be readily marketable and may be subject to restrictions on resale. In connection with certain loan transactions, transaction costs that are borne by the Fund may include the expenses of third parties that are retained to assist with reviewing and conducting diligence, negotiating, structuring and servicing a loan transaction, and/or providing other services in connection therewith. Furthermore, the Fund may incur such costs in connection with loan transactions that are pursued by the Fund but not ultimately consummated (so-called "broken deal costs"). In some cases, negotiations involved in disposing of indebtedness may require weeks to complete.

Consequently, some indebtedness may be difficult or impossible to dispose of readily at what PIMCO believes to be a fair price. In addition, valuation of illiquid indebtedness involves a greater degree of judgment in determining the Fund's NAV than if that value were based on available market quotations, and could result in significant variations in the Fund's daily share price. At the same time, some loan interests are traded among certain financial institutions and accordingly may be deemed liquid. As the market for different types of indebtedness develops, the liquidity of these instruments is expected to improve. Acquisitions of loan participations are considered to be debt obligations for purposes of the Fund's investment restriction relating to the lending of funds or assets by the Fund.

Acquisitions of loans through a purchase of a loan, loan origination or direct assignment of a financial institution's interests with respect to a loan may involve additional risks to the Fund. The purchaser of an assignment typically succeeds to all the rights and obligations under the loan agreement with the same rights and obligations as the assigning lender. Assignments may, however, be arranged through private negotiations between potential assignees and potential assignors, and the rights and obligations acquired by the purchaser of an assignment may differ from, and be more limited than, those held by the assigning lender. If a loan is foreclosed, the Fund could become part owner of any collateral, and would bear the costs and liabilities associated with owning and disposing of the collateral. In addition, it is conceivable that under emerging legal theories of lender liability, the Fund could be held liable as co-lender. It is unclear whether loans and other forms of direct indebtedness offer securities law protections against fraud and misrepresentation. In the absence of definitive regulatory guidance, the Fund relies on PIMCO's research in an attempt to avoid situations where fraud or misrepresentation could adversely affect the Fund.

The Fund may participate in or acquire debtor-in-possession financings (commonly known as "DIP financings"). DIP financings are arranged when an entity seeks the protections of the bankruptcy court under Chapter 11 of the U.S. Bankruptcy Code. These financings allow the entity to continue its business operations while reorganizing under Chapter 11. Such financings constitute senior liens on unencumbered security (i.e., security not subject to other creditors' claims). There is a risk that the entity will not emerge from Chapter 11 and be forced to liquidate its assets under Chapter 7 of the U.S. Bankruptcy Code. In the event of liquidation, the Fund's only recourse will be against the property securing the DIP financing.

The Fund may seek to originate loans, including, without limitation, residential and/or commercial real estate or mortgage-related loans, consumer loans or other types of loans, which may be in the form of whole loans, secured and unsecured notes, senior and second lien loans, mezzanine loans or similar investments. The Fund may originate loans to corporations and/or other legal entities and individuals. Such borrowers may have credit ratings that are determined by one or more NRSROs or PIMCO to be below investment grade. The loans the Fund originates may vary in maturity and/or duration. The Fund is not limited in the amount, size or type of loans it may originate, including with respect to a single borrower or with respect to borrowers that are determined to be below investment grade, other than pursuant to any applicable law. The Fund's origination of loans may also be limited by the Fund's intention to qualify as a regulated investment company. The Fund will retain all fees received in connection with originating or structuring the terms of any such loan.

The Fund may make investments in debt instruments and other securities directly or through one or more wholly-owned and controlled subsidiaries formed by the Fund (each, a "Subsidiary"). References herein to the Fund include references to a Subsidiary in respect of the Fund's investment exposure. The Fund will treat a Subsidiary's assets as assets of the Fund for purposes of determining compliance with various provisions of the 1940 Act applicable to the Fund, including those relating to investment policies (Section 8), capital structure and leverage (Section 18) and affiliated transactions and custody (Section 17).

In determining whether to make a direct loan, the Fund will rely primarily upon the creditworthiness of the borrower and/or any collateral for payment of interest and repayment of principal. In making a direct loan, the Fund is exposed to the risk that the borrower may default or become insolvent and, consequently, that the Fund will lose money on the loan. Furthermore, direct loans may subject the Fund to liquidity and interest rate risk and certain direct loans may be deemed illiquid. Direct loans are not publicly traded and may not have a secondary market. The lack of a secondary market for direct loans may have an adverse impact on the ability of the Fund to dispose of a direct loan and/or to value the direct loan.

When engaging in direct lending, the Fund's performance may depend, in part, on the ability of the Fund to originate loans on advantageous terms. In originating and purchasing loans, the Fund will compete with a broad spectrum of lenders. Increased competition for, or a diminishment in the available supply of, qualifying loans could result in lower yields on such loans, which could reduce Fund performance.

As part of its lending activities, the Fund may originate loans (including subprime loans) to companies that are experiencing significant financial or business difficulties, including companies involved in bankruptcy or other reorganization and liquidation proceedings or that are rated "below investment grade" by a national recognized ratings agency. Although the terms of such financing may result in significant financial returns to the Fund, they involve a substantial degree of risk. The level of analytical sophistication, both financial and legal, necessary for successful financing to companies experiencing significant business and financial difficulties is unusually high. Different types of assets may be used as collateral for the Fund's loans and, accordingly, the valuation of and risks associated with such collateral will vary by loan. There is no assurance that the Fund will correctly evaluate the value of the assets collateralizing the Fund's loans or the prospects for a successful reorganization or similar action. In any reorganization or liquidation proceeding relating to a company that the Fund funds, the Fund may lose all or part of the amounts advanced to the borrower or may be required to accept collateral with a value less than the amount of the loan advanced by the Fund or its affiliates to the borrower. Furthermore, in the event of a default by a borrower, the Fund may have difficulty disposing of the assets used as collateral for a loan.

Various state licensing requirements could apply to the Fund with respect to investments in, or the origination and servicing of, loans and similar assets. The licensing requirements could apply depending on the location of the borrower, the location of the collateral securing the loan, or the location where the Fund or PIMCO operates or has offices. In states in which it is licensed, the Fund or PIMCO will be required to comply with applicable laws and regulations, including consumer protection and anti-fraud laws, which could impose restrictions on the Fund's or PIMCO's ability to take certain actions to protect the value of its investments in such assets and impose compliance costs. Failure to comply with such laws and regulations could lead to, among other penalties, a loss of the Fund's or PIMCO's license, which in turn could require the Fund to divest assets located in or secured by real property located in that state. These risks will also apply to issuers and entities in which the Fund invests that hold similar assets, as well as any origination company or servicer in which the Fund owns an interest. Loan origination and servicing companies are routinely involved in legal proceedings concerning matters that arise in the ordinary course of their business. These legal proceedings range from actions involving a single plaintiff to class action lawsuits with potentially tens of thousands of class members. In addition, a number of participants in the loan origination and servicing industry (including control persons of industry participants) have been the subject of regulatory actions by state regulators, including state Attorneys General, and by the federal government. Governmental investigations, examinations or regulatory actions, or private lawsuits, including purported class action lawsuits, may adversely affect such companies' financial results. To the extent the Fund seeks to engage in origination and/or servicing directly, or has a financial interest in, or is otherwise affiliated with, an origination or servicing company, the Fund will be subject to enhanced risks of litigation, regulatory actions and other proceedings. As a result, the Fund may be required to pay legal fees, settlement costs, damages, penalties or other charges, any or all of which could materially adversely affect the Fund and its investments.

The Fund may enter into, or acquire participations in, delayed funding loans and revolving credit facilities, in which a bank or other lender agrees to make loans up to a maximum amount upon demand by the borrower during a specified term. These commitments may have the effect of requiring the Fund to increase its investment in a company at a time when it might not be desirable to do so (including at a time when the company's financial condition makes it unlikely that such amounts will be repaid). Delayed funding loans and revolving credit facilities are subject to credit, interest rate and liquidity risk and the risks of being a lender.

The Fund may invest in a wide variety of bonds of varying maturities issued by non-U.S. (foreign) and U.S. corporations and other business entities, governments and quasi-governmental entities and municipalities and other issuers. Bonds may include, among other things, fixed or variable/floating-rate debt obligations, including bills, notes, debentures, money market instruments and similar instruments and securities. Bonds generally are used by corporations as well as governments and other issuers to borrow money from investors. The issuer pays the investor a fixed or variable rate of interest and normally must repay the amount borrowed on or before maturity. Certain bonds are "perpetual" in that they have no maturity date.

Preferred securities represent an equity interest in a company that generally entitles the holder to receive, in preference to the holders of other stocks such as common stocks, dividends and a fixed share of the proceeds resulting from liquidation of the company. Unlike common stocks, preferred securities usually do not have voting rights. Preferred securities in some instances are convertible into common stock. Some preferred securities also entitle their holders to receive additional liquidation proceeds on the same basis as holders of a company's common stock, and thus also represent an ownership interest in the company. Some preferred securities offer a fixed rate of return with no maturity date. Because they never mature, these preferred securities may act like long-term bonds, can be more volatile than other types of preferred securities and may have heightened sensitivity to changes in interest rates. Other preferred securities have a variable dividend, generally determined on a quarterly or other periodic basis, either according to a formula based upon a specified premium or discount to the yield on particular U.S. Treasury securities or based on an auction process, involving bids submitted by holders and prospective purchasers of such securities. Although they are equity securities, preferred securities have certain characteristics of both debt securities and common stock. They are like debt securities in that their stated income is generally contractually fixed. They are like common stocks in that they do not have rights to precipitate bankruptcy proceedings or collection activities in the event of missed payments. Furthermore, preferred securities have many of the key characteristics of equity due to their subordinated position in an issuer's capital structure and because their quality and value are heavily dependent on the profitability of the issuer rather than on any legal claims to specific assets or cash flows. Because preferred securities represent an equity ownership interest in a company, their value usually will react more strongly than bonds and other debt instruments to actual or perceived changes in a company's financial condition or prospects, or to fluctuations in the equity markets.

In order to be payable, dividends on preferred securities must be declared by the issuer's board of directors. In addition, distributions on preferred securities may be subject to deferral and thus may not be automatically payable. Income payments on some preferred securities are cumulative, causing dividends and distributions to accrue even if they are not declared by the board of directors of the issuer or otherwise made payable. Other preferred securities are non-cumulative, meaning that skipped dividends and distributions do not continue to accrue. There is no assurance that dividends on preferred securities in which the Fund invests will be declared or otherwise made payable.

Preferred securities have a liquidation value that generally equals their original purchase price at the date of issuance. The market values of preferred securities may be affected by favorable and unfavorable changes affecting the issuers' industries or sectors. They also may be affected by actual and anticipated changes or ambiguities in the tax status of the security and by actual and anticipated changes or ambiguities in tax laws, such as changes in corporate and individual income tax rates or the

characterization of dividends as tax-advantaged. The dividends paid on the preferred securities in which the Fund may invest might not be eligible for tax-advantaged "qualified dividend" treatment. See "Tax Matters." Because the claim on an issuer's earnings represented by preferred securities may become disproportionately large when interest rates fall below the rate payable on the securities or for other reasons, the issuer may redeem preferred securities, generally after an initial period of call protection in which the security is not redeemable. Thus, in declining interest rate environments in particular, the Fund's holdings of higher dividend-paying preferred securities may be reduced and the Fund may be unable to acquire securities paying comparable rates with the redemption proceeds.

Convertible securities (i.e., debt securities that may be converted at either a stated price or stated rate into underlying shares of common stock) have general characteristics similar to both debt securities and equity securities. Although to a lesser extent than with debt obligations, the market value of convertible securities tends to decline as interest rates increase and, conversely, tends to increase as interest rates decline. In addition, because of the conversion feature, the market value of convertible securities tends to vary with fluctuations in the market value of the underlying common stocks and, therefore, also will react to variations in the general market for equity securities.

Convertible securities are investments that provide for a stable stream of income with generally higher yields than common stocks. There can be no assurance of current income because the issuers of the convertible securities may default on their obligations. Convertible securities, however, generally offer lower interest or dividend yields than non-convertible debt securities of similar credit quality because of the potential for equity-related capital appreciation. A convertible security, in addition to providing current income, offers the potential for capital appreciation through the conversion feature, which enables the holder to benefit from increases in the market price of the underlying common stock.

The Fund may invest in synthetic convertible securities, which are created through a combination of separate securities that possess the two principal characteristics of a traditional convertible security, that is, an income-producing component and the right to acquire a convertible component. The income-producing component is achieved by investing in non-convertible, income-producing securities such as bonds, preferred securities and money market instruments. The convertible component is achieved by purchasing warrants or options to buy common stock at a certain exercise price, or options on a stock index. The Fund may also purchase synthetic securities created by other parties, typically investment banks, including convertible structured notes. The income-producing and convertible components of a synthetic convertible security may be issued separately by different issuers and at different times. The values of synthetic convertible securities will respond differently to market fluctuations than a traditional convertible security because a synthetic convertible is composed of two or more separate securities or instruments, each with its own market value. Synthetic convertible securities are also subject to the risks associated with derivatives. See "Principal Risks of the Fund—Derivatives Risk." In addition, if the value of the underlying common stock or the level of the index involved in the convertible element falls below the strike price of the warrant or option, the warrant or option may lose all value.

Contingent convertible securities ("CoCos") are a form of hybrid debt security issued primarily by non-U.S. issuers, which have loss absorption mechanisms built into their terms. CoCos have no stated maturity, have fully discretionary coupons and are typically issued in the form of subordinated debt instruments. CoCos generally either convert into equity of the issuer or have their principal written down upon the occurrence of certain triggering events ("triggers") linked to regulatory capital thresholds or regulatory actions relating to the issuer's continued viability. In certain scenarios, investors in CoCos may suffer a loss of capital ahead of equity holders or when equity holders do not. There is no guarantee that the Fund will receive a return of principal on CoCos. Any indication that an automatic write-down or conversion event may occur can be expected to have an adverse effect on the market price of CoCos. CoCos are often rated below investment grade and are subject to the risks of high yield securities.

Because CoCos are issued primarily by financial institutions, CoCos may present substantially increased risks at times of financial turmoil, which could affect financial institutions more than companies in other sectors and industries. Further, the value of an investment in CoCos is unpredictable and will be influenced by many factors and risks, including interest rate risk, credit risk, market risk and liquidity risk. An investment by the Fund in CoCos may result in losses to the Fund.

Loss absorption risk. CoCos may be subject to an automatic write-down (i.e., the automatic write-down of the principal amount or value of the securities, potentially to zero, and the cancellation of the securities) under certain circumstances, which could result in the Fund losing a portion or all of its investment in such securities. In addition, the Fund may not have any rights with respect to repayment of the principal amount of the securities that has not become due or the payment of interest or dividends on such securities for any period from (and including) the interest or dividend payment date falling immediately prior to the occurrence of such automatic write-down. An automatic write-down could also result in a reduced income rate if the dividend or interest payment is based on the security's par value. In addition, CoCos have fully discretionary coupons. This means coupons can potentially be cancelled at the issuer's discretion or at the request of the relevant regulatory authority in order to help the issuer absorb losses and may be suspended in the event there are insufficient distributable reserves.

Subordinated instruments. CoCos will, in the majority of circumstances, be issued in the form of subordinated debt instruments in order to provide the appropriate regulatory capital treatment prior to a conversion. Accordingly, in the event of liquidation, dissolution or winding-up of an issuer prior to a conversion having occurred, the rights and claims of the holders of the CoCos, such as the Funds, against the issuer in respect of or arising under the terms of the CoCos shall generally rank junior to the claims of all holders of unsubordinated obligations of the issuer. In addition, if the CoCos are converted into the issuer's underlying equity securities following a conversion event (i.e., a "trigger"), each holder will be subordinated due

to their conversion from being the holder of a debt instrument to being the holder of an equity instrument.

Market value will fluctuate based on unpredictable factors. The trading behavior of a given issuer's CoCos may be strongly impacted by the trading behavior of other issuers' CoCos, such that negative information from an unrelated CoCo may cause a decline in value of one or more CoCos held by the Fund. Accordingly, the trading behavior of CoCos may not follow the trading behavior of other similarly structured securities. The value of CoCos is unpredictable and could be influenced by many factors including, without limitation: (i) the creditworthiness of the issuer and/or fluctuations in such issuer's applicable capital ratios; (ii) supply and demand for the CoCos; (iii) general market conditions and available liquidity; and (iv) economic, financial and political events that affect the issuer, its particular market or the financial markets in general.

As described under "Leverage," the Fund may use, among other things, reverse repurchase agreements and/or dollar rolls to add leverage to its portfolio. Under a reverse repurchase agreement, the Fund sells securities to a bank or broker dealer and agrees to repurchase the securities at a mutually agreed future date and price. A dollar roll is similar to a reverse repurchase agreement except that the counterparty with which the Fund enters into a dollar roll transaction is not obligated to return the same securities as those originally sold by the Fund, but only securities that are "substantially identical." Generally, the effect of a reverse repurchase agreement or dollar roll transaction is that the Fund can recover and reinvest all or most of the cash invested in the portfolio securities involved during the term of the agreement and still be entitled to the returns associated with those portfolio securities, thereby resulting in a transaction similar to a borrowing and giving rise to leverage for the Fund. The Fund will incur interest expense as a cost of utilizing reverse repurchase agreements and dollar rolls. In the event the buyer of securities under a reverse repurchase agreement or dollar roll files for bankruptcy or becomes insolvent, the Fund's use of the proceeds of the agreement may be restricted pending a determination by the other party, or its trustee or receiver, whether to enforce the Fund's obligation to repurchase the securities.

Commercial paper represents short-term unsecured promissory notes issued in bearer form by corporations such as banks or bank holding companies and finance companies. The rate of return on commercial paper may be linked or indexed to the level of exchange rates between the U.S. dollar and a foreign currency or currencies.

U.S. Government securities are obligations of and, in certain cases, guaranteed by, the U.S. Government, its agencies or instrumentalities. The U.S. Government does not guarantee the NAV of the Fund's Common Shares. Some U.S. Government securities, such as Treasury bills, notes and bonds, and securities guaranteed by GNMA, are supported by the full faith and credit of the United States; others, such as those of the FHLBs, are supported by the right of the issuer to borrow from the U.S. Department of the Treasury (the "U.S. Treasury"); others, such as those of FNMA, are supported by the discretionary authority of the U.S. Government to purchase the agency's obligations; and still others are supported only by the credit of the instrumentality. U.S. Government securities may include zero coupon securities, which do not distribute interest on a current basis and tend to be subject to greater risk than interest-paying securities of similar maturities.

The Fund may invest in bank capital securities of both non-U.S. (foreign) and U.S. issuers. Bank capital securities are issued by banks to help fulfill their regulatory capital requirements. There are three common types of bank capital: Lower Tier II, Upper Tier II and Tier I. Upper Tier II securities are commonly thought of as hybrids of debt and preferred stock. Upper Tier II securities are often perpetual (with no maturity date), callable and have a cumulative interest deferral feature. This means that under certain conditions, the issuer bank can withhold payment of interest until a later date. However, such deferred interest payments generally earn interest. Tier I securities often take the form of trust preferred securities.

The Fund may also invest in other bank obligations including without limitation certificates of deposit, bankers' acceptances and fixed time deposits. Certificates of deposit are negotiable certificates that are issued against funds deposited in a commercial bank for a definite period of time and that earn a specified return. Bankers' acceptances are negotiable drafts or bills of exchange, normally drawn by an importer or exporter to pay for specific merchandise, which are "accepted" by a bank, meaning, in effect, that the bank unconditionally agrees to pay the face value of the instrument on maturity. Fixed time deposits are bank obligations payable at a stated maturity date and bearing interest at a fixed rate. Fixed time deposits may be withdrawn on demand by the investor, but may be subject to early withdrawal penalties which vary depending upon market conditions and the remaining maturity of the obligation. There are generally no contractual restrictions on the right to transfer a beneficial interest in a fixed time deposit to a third party, although there is generally no market for such deposits. The Fund may also hold funds on deposit with its custodian bank in an interest-bearing account for temporary purposes.

Zero-coupon bonds pay interest only at maturity rather than at intervals during the life of the security. Like zero-coupon bonds, "step up" bonds pay no interest initially but eventually begin to pay a coupon rate prior to maturity, which rate may increase at stated intervals during the life of the security. PIKs are debt obligations that pay "interest" in the form of other debt obligations, instead of in cash. Each of these instruments is normally issued and traded at a deep discount from face value. Zero-coupon bonds, step-ups and PIKs allow an issuer to avoid or delay the need to generate cash to meet current interest payments and, as a result, may involve greater credit risk than bonds that pay interest currently or in cash. The Fund would be required to distribute the income on these instruments as it accrues, even though the Fund will not receive the income on a current basis or in cash. Thus, the Fund may have to sell investments, including when it may not be advisable to do so, to make income distributions to its shareholders.

Inflation-indexed bonds (other than municipal inflation-indexed bonds and certain corporate inflation-indexed bonds) are fixed income securities the principal value of which is periodically adjusted according to the rate of inflation. If the index measuring inflation falls, the principal value of inflation-indexed bonds (other than municipal inflation-indexed bonds and certain corporate inflation-indexed bonds) will be adjusted downward, and consequently the interest payable on these securities (calculated with respect to a smaller principal amount) will be reduced. Repayment of the original bond principal upon maturity (as adjusted for inflation) is guaranteed in the case of TIPS. For bonds that do not provide a similar guarantee, the adjusted principal value of the bond repaid at maturity may be less than the original principal. TIPS may also be divided into individual zero-coupon instruments for each coupon or principal payment (known as "iSTRIPS"). An iSTRIP of the principal component of a TIPS issue will retain the embedded deflation floor that will allow the holder of the security to receive the greater of the original principal or inflation-adjusted principal value at maturity. iSTRIPS may be less liquid than conventional TIPS because they are a small component of the TIPS market. Municipal inflation-indexed securities are municipal bonds that pay coupons based on a fixed rate plus CPI.

With regard to municipal inflation-indexed bonds and certain corporate inflation-indexed bonds, the inflation adjustment is typically reflected in the semi-annual coupon payment. As a result, the principal value of municipal inflation-indexed bonds and such corporate inflation-indexed bonds does not adjust according to the rate of inflation. At the same time, the value of municipal inflation-indexed securities and such corporate inflation-indexed securities generally will not increase if the rate of inflation decreases. Because municipal inflation-indexed securities and corporate inflation-indexed securities are a small component of the municipal bond and corporate bond markets, respectively, they may be less liquid than conventional municipal and corporate bonds.

The value of inflation-indexed bonds is expected to change in response to changes in real interest rates. Real interest rates are tied to the relationship between nominal interest rates and the rate of inflation. If nominal interest rates increase at a faster rate than inflation, real interest rates may rise, leading to a decrease in value of inflation-indexed bonds. Any increase in the principal amount of an inflation-indexed bond will be considered taxable ordinary income, even though investors do not receive their principal until maturity. See "Tax Matters."

The Fund may obtain event-linked exposure by investing in "event-linked bonds" or "event-linked swaps" or by implementing "event-linked strategies." Event-linked exposure results in gains or losses that typically are contingent upon, or formulaically related to, defined trigger events. Examples of trigger events include hurricanes, earthquakes, weather-related phenomena or statistics relating to such events. Some event-linked bonds are commonly referred to as "catastrophe bonds." If a trigger event occurs, the Fund may lose a portion or its entire principal invested in the bond or notional amount on a swap. Event-linked exposure often provides for an extension of maturity to process and audit loss claims when a trigger event has, or possibly has, occurred. An extension of maturity may increase volatility. Event-linked exposure may also expose the Fund to certain other risks including credit risk, counterparty risk, adverse regulatory or jurisdictional interpretations and adverse tax consequences. Event-linked exposures may also be subject to liquidity risk.

Variable- and floating-rate instruments are instruments that pay interest at rates that adjust whenever a specified interest rate changes and/or that reset on predetermined dates (such as the last day of a month or calendar quarter). In addition to senior loans, variable- and floating-rate instruments may include, without limitation, instruments such as catastrophe and other event-linked bonds, bank capital securities, unsecured bank loans, corporate bonds, money market instruments and certain types of mortgage-related and other asset-backed securities. Due to their variable- or floating-rate features, these instruments will generally pay higher levels of income in a rising interest rate environment and lower levels of income as interest rates decline. For the same reason, the market value of a variable- or floating-rate instrument is generally expected to have less sensitivity to fluctuations in market interest rates than a fixed-rate instrument, although the value of a variable- or floating-rate instrument may nonetheless decline as interest rates rise and due to other factors, such as changes in credit quality.

The Fund also may engage in credit spread trades. A credit spread trade is an investment position relating to a difference in the prices or interest rates of two bonds or other securities, in which the value of the investment position is determined by changes in the difference between the prices or interest rates, as the case may be, of the respective securities.

An inverse floater is a type of debt instrument that bears a floating or variable interest rate that moves in the opposite direction to interest rates generally or the interest rate on another security or index. Changes in interest rates generally, or the interest rate of the other security or index, inversely affect the interest rate paid on the inverse floater, with the result that the inverse floater's price will be considerably more volatile than that of a fixed-rate bond. The Fund may invest without limit in inverse floaters, which brokers typically create by depositing an income-producing instrument, which may be a mortgage-related asset, in a trust. The trust in turn issues a variable rate security and inverse floaters. The interest rate for the variable rate security is typically determined by an index or an auction process, while the inverse floater holder receives the balance of the income from the underlying income-producing instrument less an auction fee. The market prices of inverse floaters may be highly sensitive to changes in interest rates and prepayment rates on the underlying securities, and may decrease significantly when interest rates increase or prepayment rates change. In a transaction in which the Fund purchases an inverse floater from a trust, and the underlying bond was held by the Fund prior to being deposited into the trust, the Fund typically treats the transaction as a secured borrowing for financial reporting purposes. As a result, for financial reporting purposes, the Fund will generally incur a non-cash interest expense with respect to interest paid by the trust on the variable rate securities, and will recognize additional interest income in an amount directly corresponding to the non-cash interest expense. Therefore, the

Fund's NAV per Common Share and performance are not affected by the non-cash interest expense. This accounting treatment does not apply to inverse floaters acquired by the Fund when the Fund did not previously own the underlying bond.

The Fund may, but is not required to, utilize various derivative strategies (both long and short positions) for investment purposes, leveraging purposes, or in an attempt to hedge against market, credit, interest rate, currency and other risks in the portfolio. See "Leverage." Generally, derivatives are financial contracts whose value depends upon, or is derived from, the value of an underlying asset, reference rate or index, and may relate to, among others, individual debt instruments, interest rates, currencies or currency exchange rates, commodities and related indexes. Examples of derivative instruments that the Fund may use include, without limitation, futures and forward contracts (including foreign currency exchange contracts), call and put options (including options on futures contracts), credit default swaps, total return swaps, basis swaps and other swap agreements. The Fund's use of derivative instruments involves risks different from, or possibly greater than, the risks associated with investment directly in securities and other more traditional investments. See "Principal Risks of the Fund—Derivatives Risk." Certain types of derivative instruments that the Fund may utilize are described elsewhere in this section, including those described under "Principal Risks of the Funds—Certain Interest Rate Transactions," "Principal Risks of the Funds—Hybrid Instruments," "Principal Risks of the Funds—Credit Default Swaps" and "Principal Risks of the Funds—Structured Notes and Related Instruments." Please see "Investment Objectives and Policies—Derivative Instruments" in the Statement of Additional Information for additional information about these and other derivative instruments that the Fund may use and the risks associated with such instruments. There is no assurance that these derivative strategies will be available at any time or that PIMCO will determine to use them for the Fund or, if used, that the strategies will be successful. In addition, the Fund may be subject to certain restrictions on its use of derivative strategies imposed by guidelines of one or more rating agencies that may issue ratings for any preferred shares issued by the Fund.

In order to reduce the interest rate risk inherent in the Fund's underlying investments and capital structure, the Fund may (but is not required to) enter into interest rate swap transactions. Interest rate swaps involve the exchange by the Fund with a counterparty of their respective commitments to pay or receive interest, such as an exchange of fixed rate payments for floating rate payments. These transactions generally involve an agreement with the swap counterparty to pay a fixed or variable rate payment in exchange for the counterparty paying the Fund the other type of payment stream (i.e., variable or fixed). The payment obligation would be based on the notional amount of the swap. Other forms of interest rate swap agreements in which the Fund may invest include without limitation interest rate caps, under which, in return for a premium, one party agrees to make payments to the other to the extent that interest rates exceed a specified rate, or "cap;" interest rate floors, under which, in return for a premium, one party agrees to make payments to the other to the extent that interest rates fall below a specified rate, or "floor;" and interest rate "collars," under which a party sells a cap and purchases a floor or vice versa in an attempt to protect itself against interest rate movements exceeding given minimum or maximum levels. The Fund may (but is not required to) use interest rate swap transactions with the intent to reduce or eliminate the risk that an increase in short-term interest rates could pose for the performance of the Fund's Common Shares as a result of leverage, and also may use these instruments for other hedging or investment purposes. Any termination of an interest rate swap transaction could result in a termination payment by or to the Fund.

The Fund may enter into credit default swaps for both investment and risk management purposes, as well as to add leverage to the Fund's portfolio. A credit default swap may have as reference obligations one or more securities that are not currently held by the Fund. The protection "buyer" in a credit default swap is generally obligated to pay the protection "seller" an upfront or a periodic stream of payments over the term of the contract provided that no credit event, such as a default, on a reference obligation has occurred. If a credit event occurs, the seller generally must pay the buyer the "par value" (full notional value) of the swap in exchange for an equal face amount of deliverable obligations of the reference entity described in the swap, or the seller may be required to deliver the related net cash amount, if the swap is cash settled. The Fund may be either the buyer or seller in the transaction. If the Fund is a buyer and no credit event occurs, the Fund may recover nothing if the swap is held through its termination date. However, if a credit event occurs, the buyer generally may elect to receive the full notional value of the swap from the seller, who, in turn, generally will recover an amount significantly lower than the equivalent face amount of the obligations of the reference entity, whose value may have significantly decreased, through (i) physical delivery of such obligations by the buyer, (ii) cash settlement or (iii) an auction process. As a seller, the Fund generally receives an upfront payment or a fixed rate of income throughout the term of the swap provided that there is no credit event. As the seller, the Fund would effectively add leverage to its portfolio because, in addition to its total net assets, the Fund would be subject to investment exposure on the notional amount of the swap.

The spread of a credit default swap is the annual amount the protection buyer must pay the protection seller over the length of the contract, expressed as a percentage of the notional amount. When spreads rise, market perceived credit risk rises and when spreads fall, market perceived credit risk falls. Wider credit spreads and decreasing market values, when compared to the notional amount of the swap, represent a deterioration of the referenced entity's credit soundness and a greater likelihood or risk of default or other credit event occurring as defined under the terms of the agreement. For credit default swaps on asset-backed securities and credit indices, the quoted market prices and resulting values, as well as the annual payment rate, serve as an indication of the current status of the payment/performance risk.

Credit default swaps involve greater risks than if the Fund had invested in the reference obligation directly since, in addition to general market risks, credit default swaps are subject to illiquidity risk, counterparty risk and

credit risk, among other risks associated with derivative instruments. A buyer generally also will lose its investment and recover nothing should no credit event occur and the swap is held to its termination date. If a credit event were to occur, the value of any deliverable obligation received by the seller, coupled with the upfront or periodic payments previously received, may be less than the full notional value it pays to the buyer, resulting in a loss of value to the seller. The Fund's obligations under a credit default swap will be accrued daily (offset against any amounts owing to the Fund). In connection with credit default swaps in which the Fund is the buyer, the Fund may segregate or "earmark" cash or liquid assets, or enter into certain offsetting positions, with a value at least equal to the Fund's exposure (any accrued but unpaid net amounts owed by the Fund to any counterparty), on a marked-to-market basis. In connection with credit default swaps in which the Fund is the seller, if the Fund covers its position through asset segregation, the Fund will segregate or "earmark" cash or assets determined to be liquid by PIMCO in accordance with procedures established by the Board of Trustees with a value at least equal to the full notional amount of the Fund's obligation under the swap. Such segregation or "earmarking" will not limit the Fund's exposure to loss. See "Principal Risks of the Fund—Segregation and Coverage Risk."

A hybrid instrument is a type of potentially high-risk derivative that combines a traditional bond, stock or commodity with an option or forward contract. Generally, the principal amount, amount payable upon maturity or redemption, or interest rate of a hybrid is tied (positively or negatively) to the price of some commodity, currency or securities index or another interest rate or some other economic factor (each a "benchmark"). The interest rate or (unlike most fixed income securities) the principal amount payable at maturity of a hybrid security may be increased or decreased, depending on changes in the value of the benchmark. An example of a hybrid could be a bond issued by an oil company that pays a small base level of interest with additional interest that accrues in correlation to the extent to which oil prices exceed a certain predetermined level. Such a hybrid instrument would be a combination of a bond and a call option on oil.

Hybrids can be used as an efficient means of pursuing a variety of investment goals, including currency hedging, duration management and increased total return. Hybrids may not bear interest or pay dividends. The value of a hybrid or its interest rate may be a multiple of a benchmark and, as a result, may be leveraged and move (up or down) more steeply and rapidly than the benchmark. These benchmarks may be sensitive to economic and political events, such as commodity shortages and currency devaluations, which cannot be readily foreseen by the purchaser of a hybrid. Under certain conditions, the redemption value of a hybrid could be zero. Thus, an investment in a hybrid may entail significant market risks that are not associated with a similar investment in a traditional, U.S. dollar-denominated bond that has a fixed principal amount and pays a fixed rate or floating rate of interest. The purchase of hybrids also exposes the Fund to the credit risk of the issuer of the hybrids. These risks may cause significant fluctuations in the NAV of the Common Shares if the Fund invests in hybrid instruments.

Certain hybrid instruments may provide exposure to the commodities markets. These are derivative securities with one or more commodity-linked components that have payment features similar to commodity futures contracts, commodity options or similar instruments. Commodity-linked hybrid instruments may be either equity or debt securities, leveraged or unleveraged, and are considered hybrid instruments because they have both security and commodity-like characteristics. A portion of the value of these instruments may be derived from the value of a commodity, futures contract, index or other economic variable.

Certain issuers of structured products such as hybrid instruments may be deemed to be investment companies as defined in the 1940 Act. As a result, the Fund's investments in these products may be subject to limits applicable to investments in investment companies and may be subject to restrictions contained in the 1940 Act.

The Fund's use of commodity-linked instruments may be limited by the Fund's intention to qualify as a regulated investment company and may limit the Fund's ability to so qualify. In order to qualify for the special tax treatment accorded regulated investment companies and their shareholders, the Fund must, among other things, derive at least 90% of its income from certain specified sources (qualifying income). Income from certain commodity-linked instruments does not constitute qualifying income to the Fund. The tax treatment of certain other commodity-linked instruments in which the Fund might invest is not certain, in particular with respect to whether income and gains from such instruments constitute qualifying income. If the Fund were to treat income from a particular instrument as qualifying income and the income were later determined not to constitute qualifying income and, together with any other nonqualifying income, caused the Fund's nonqualifying income to exceed 10% of its gross income in any taxable year, the Fund would fail to qualify as a regulated investment company unless it is eligible to and does pay a tax at the Fund level. See "Tax Matters."

The Fund may invest in "structured" notes and other related instruments, which are privately negotiated debt obligations in which the principal and/ or interest is determined by reference to the performance of a benchmark asset, market or interest rate (an "embedded index"), such as selected securities, an index of securities or specified interest rates, or the differential performance of two assets or markets, such as indexes reflecting bonds. Structured instruments may be issued by corporations, including banks, as well as by governmental agencies. Structured instruments frequently are assembled in the form of medium-term notes, but a variety of forms are available and may be used in particular circumstances. The terms of such structured instruments normally provide that their principal and/or interest payments are to be adjusted upwards or downwards (but ordinarily not below zero) to reflect changes in the embedded index while the structured instruments are outstanding. As a result, the interest and/or principal payments that may be made on a structured product may vary widely, depending on a variety of factors, including the volatility of the embedded index and the effect of changes in the embedded index on principal and/or interest payments. The rate of return on structured notes may be determined by applying a multiplier to the performance or differential

performance of the referenced index(es) or other asset(s). Application of a multiplier involves leverage that will serve to magnify the potential for gain and the risk of loss.

The Fund may use structured instruments for investment purposes and also for risk management purposes, such as to reduce the duration and interest rate sensitivity of the Fund's portfolio, and for leveraging purposes. While structured instruments may offer the potential for a favorable rate of return from time to time, they also entail certain risks. Structured instruments may be less liquid than other debt securities, and the price of structured instruments may be more volatile. In some cases, depending on the terms of the embedded index, a structured instrument may provide that the principal and/or interest payments may be adjusted below zero. Structured instruments also may involve significant credit risk and risk of default by the counterparty. Structured instruments may also be illiquid. Like other sophisticated strategies, the Fund's use of structured instruments may not work as intended. If the value of the embedded index changes in a manner other than that expected by PIMCO, principal and/or interest payments received on the structured instrument may be substantially less than expected. Also, if PIMCO chooses to use structured instruments to reduce the duration of the Fund's portfolio, this may limit the Fund's return when having a longer duration would be beneficial (for instance, when interest rates decline).

The Fund may invest in credit-linked trust certificates, which are investments in a limited purpose trust or other vehicle which, in turn, invests in a basket of derivative instruments, such as credit default swaps, total return swaps, interest rate swaps or other securities, in order to provide exposure to the high yield or another debt securities market. Like an investment in a bond, investments in credit-linked trust certificates represent the right to receive periodic income payments (in the form of distributions) and payment of principal at the end of the term of the certificate. However, these payments are conditioned on the trust's receipt of payments from, and the trust's potential obligations to, the counterparties to the derivative instruments and other securities in which the trust invests. For instance, the trust may sell one or more credit default swaps, under which the trust would receive a stream of payments over the term of the swap agreements provided that no event of default has occurred with respect to the referenced debt obligation upon which the swap is based. If a default occurs, the stream of payments may stop and the trust would be obligated to pay to the counterparty the par (or other agreed upon value) of the referenced debt obligation. This, in turn, would reduce the amount of income and principal that the Fund would receive as an investor in the trust. The Fund's investments in these instruments are indirectly subject to the risks associated with derivative instruments, including, among others, credit risk, default or similar event risk, counterparty risk, interest rate risk, leverage risk, valuation risk and management risk. It is expected that the trusts that issue credit-linked trust certificates will constitute "private" investment companies, exempt from registration under the 1940 Act. Therefore, the certificates will not be subject to applicable investment limitations and other regulation imposed by the 1940 Act (although the Fund will remain subject to such limitations and regulation, including with respect to its investments in the certificates). Although the trusts are typically private investment companies, they generally are not actively managed such as a "hedge fund" might be. It also is expected that the certificates will be exempt from registration under the Securities Act. Accordingly, there may be no established trading market for the certificates and they may constitute illiquid investments. See "Principal Risks of the Fund—Liquidity Risk." If market quotations are not readily available for the certificates, they will be valued by the Fund at fair value as determined by the Board or persons acting at its direction. See "Net Asset Value." The Fund may lose its entire investment in a credit-linked trust certificate.

The Fund may invest in securities of other open- or closed-end investment companies, including, without limitation, ETFs, to the extent that such investments are consistent with the Fund's investment objectives, strategies and policies and permissible under the 1940 Act. The Fund may invest in other investment companies to gain broad market or sector exposure, including during periods when it has large amounts of uninvested cash or when PIMCO believes share prices of other investment companies offer attractive values. The Fund treats its investments in other investment companies that invest primarily in types of securities in which the Fund may invest directly as investments in such types of securities for purposes of the Fund's investment policies (e.g., the Fund's investment in an investment company that invests primarily in debt securities will be treated by the Fund as an investment in a debt security). As a shareholder in an investment company, the Fund would bear its ratable share of that investment company's expenses and would remain subject to payment of the Fund's management fees and other expenses with respect to assets so invested. Common Shareholders would therefore be subject to duplicative expenses to the extent the Fund invests in other investment companies. The securities of other investment companies may be leveraged, in which case the NAV and/or market value of the investment company's shares will be more volatile than unleveraged investments. See "Principal Risks of the Fund—Leverage Risk."

The Fund may invest up to 20% of its total assets in common stocks, common shares of other investment companies, such as open-end or closed-end management investment companies and ETFs, and equity securities of REITs. However, common stocks the Fund has received through the conversion of a convertible security held by the Fund or in connection with the restructuring of a debt security will not count towards this 20% limit. For instance, in connection with the restructuring of a debt instrument, either outside of bankruptcy court or in the context of bankruptcy court proceedings, the Fund may determine or be required to accept common stocks or other equity securities in exchange for all or a portion of the debt instrument. Depending upon, among other things, PIMCO's evaluation of the potential value of such securities in relation to the price that could be obtained by the Fund at any given time upon sale thereof, the Fund may determine to hold these equity securities in its portfolio.

Although common stocks and other equity securities have historically generated higher average returns than debt securities over the long term, they also have experienced significantly more volatility in those returns and in certain years have significantly underperformed relative to debt securities.

An adverse event, such as an unfavorable earnings report, may depress the value of a particular equity security held by the Fund. Also, prices of common stocks and other equity securities are sensitive to general movements in the equity markets and a decline in those markets may depress the prices of the equity securities held by the Fund. The prices of equity securities fluctuate for many different reasons, including changes in investors' perceptions of the financial condition of an issuer or the general condition of the relevant stock market or when political or economic events affecting the issuer occur. In addition, prices of equity securities may be particularly sensitive to rising interest rates, as the cost of capital rises and borrowing costs increase. The Fund may invest in common shares of pooled vehicles, such as those of other investment companies, and in common shares of REITs.

The Fund may invest, either directly or through its wholly-owned Subsidiaries, in instruments, such as whole or fractional loans (including consumer, residential or other loans), purchased on an online or alternative lending platform. Alternative lending, which may include or sometimes be referred to as peer-to-peer lending, online lending or marketplace lending, is a method of financing in which an alternative lending platform (i.e., an online lending marketplace or lender that is not a traditional lender, such as a bank) facilitates the borrowing and lending of money while generally not relying on deposits for capital to fund loans. It is considered an alternative to more traditional debt financing done through a bank. There are several different models of alternative lending but, very generally, a platform typically matches consumers, small or medium-sized businesses or other types of borrowers with investors that are interested in gaining investment exposure to the loans made to such borrowers. Prospective borrowers are usually required to provide or give access to certain financial information to the platform, such as the intended purpose of the loan, income, employment information, credit score, debt-to-income ratio, credit history (including defaults and delinquencies) and home ownership status, and, in the case of small business loans, business financial statements and personal credit information regarding any guarantor, some of which information is made available to prospective lenders. Often, platforms charge fees to borrowers to cover these screening and administrative costs. Based on this and other relevant supplemental information, the platform usually assigns its own credit rating to the borrower and sets the interest rate for the requested borrowing. Platforms then post the borrowing requests online and investors may choose among the loans, based on the interest rates the loans are expected to yield less any servicing or origination fees charged by the platform or others involved in the lending arrangement, the background data provided on the borrowers and the credit rating assigned by the platform. In some cases, a platform partners with a bank to originate a loan to a borrower, after which the bank sells the loan to the platform or directly to the investor; alternatively, some platforms may originate loans themselves. Some investors, including the Fund, may not review the particular characteristics of the loans in which they invest at the time of investment, but rather negotiate in advance with platforms the general criteria of the investments, as described above. As a result, the Fund is dependent on the platforms' ability to collect, verify and provide information to the Fund about each loan and borrower.

Platforms may set minimum eligibility standards for borrowers to participate in alternative lending arrangements and may limit the maximum permitted borrowings. Depending on the purpose and nature of the loan, its term may, for example, be as short as six months or shorter, or as long as thirty years or longer.

The Fund may enter into repurchase agreements, in which the Fund purchases a security from a bank or broker-dealer and the bank or broker-dealer agrees to repurchase the security at the Fund's cost plus interest within a specified time. If the party agreeing to repurchase should default, the Fund will seek to sell the securities it holds. This could involve transaction costs or delays in addition to a loss on the securities if their value should fall below their repurchase price. Repurchase agreements maturing in more than seven days are considered to be illiquid securities.

The Fund may purchase securities that it is eligible to purchase on a when-issued basis, may purchase and sell such securities for delayed delivery and may make contracts to purchase such securities for a fixed price at a future date beyond normal settlement time (forward commitments). When-issued transactions, delayed delivery purchases and forward commitments involve a risk of loss if the value of the securities declines prior to the settlement date. The risk is in addition to the risk that the Fund's other assets will decline in value. Therefore, these transactions may result in a form of leverage and increase the Fund's overall investment exposure. Typically, no income accrues on securities the Fund has committed to purchase prior to the time delivery of the securities is made, although the Fund may earn income on securities it has segregated to cover these positions. When the Fund has sold a security on a when-issued, delayed delivery or forward commitment basis, the Fund does not participate in future gains or losses with respect to the security. If the other party to a transaction fails to pay for the securities, the Fund could suffer a loss. Additionally, when selling a security on a when-issued, delayed delivery or forward commitment basis without owning the security, the Fund will incur a loss if the security's price appreciates in value such that the security's price is above the agreed-upon price on the settlement date.

A short sale is a transaction in which the Fund sells a security or other instrument that it does not own in anticipation that the market price will decline. The Fund may use short sales for investment purposes or for hedging and risk management purposes. The Fund may also take short positions with respect to the performance of securities, indexes, interest rates, currencies and other assets or markets through the use of derivative or forward instruments. When the Fund engages in a short sale of a security, it must borrow the security sold short and deliver it to the counterparty. The Fund may have to pay a fee to borrow particular securities and would often be obligated to pay over any payments received on such borrowed securities. The Fund's obligation to replace the borrowed security will be secured by collateral deposited with the Fund's custodian in the name of the lender. The Fund may not receive any payments (including

interest) on its collateral. Short sales expose the Fund to the risk that it will be required to cover its short position at a time when the securities have appreciated in value, thus resulting in a loss to the Fund. The Fund may engage in so-called "naked" short sales when it does not own or have the immediate right to acquire the security sold short at no additional cost, in which case the Fund's losses theoretically could be unlimited. If the price of the security sold short increases between the time of the short sale and the time that the Fund replaces the borrowed security, the Fund will incur a loss; conversely, if the price declines, the Fund will realize a gain. Any gain will be decreased, and any loss increased, by the transaction costs described above. The successful use of short selling may be adversely affected by imperfect correlation between movements in the price of the security sold short and securities being hedged if the short sale is being used for hedging purposes. See "Principal Risks of the Fund—Derivatives" and "Principal Risks of the Fund—Short Sales Risk." See also "Principal Risks of the Fund —Leverage Risk" and "Principal Risks of the Fund—Segregation and Coverage Risk." The Fund may engage in short selling to the extent permitted by the 1940 Act and other federal securities laws.

The Fund may execute its strategy by investing through a Subsidiary. The Fund does not currently intend to sell or transfer all or any portion of its ownership interest in a Subsidiary. The Fund reserves the right to establish Subsidiaries through which the Fund may execute its strategy.

For the purpose of achieving income, the Fund may lend its portfolio securities to brokers, dealers or other financial institutions provided a number of conditions are satisfied, including that the loan is fully collateralized. See "Investment Objectives and Policies—Loans of Portfolio Securities" in the Statement of Additional Information for details. When the Fund lends portfolio securities, its investment performance will continue to reflect changes in the value of the securities loaned. The Fund will also receive a fee or interest on the collateral. Securities lending involves the risk of loss of rights in the collateral or delay in recovery of the collateral if the borrower fails to return the security loaned or becomes insolvent, or the risk of loss due to the investment performance of the collateral. The Fund may pay lending fees to the party arranging the loan. See "Principal Risks of the Fund—Securities Lending Risk."

The length of time the Fund has held a particular security is not generally a consideration in investment decisions. A change in the securities held by the Fund is known as "portfolio turnover." The Fund may engage in frequent and active trading of portfolio securities to achieve its investment objectives, particularly during periods of volatile market movements. High portfolio turnover (e.g., over 100%) generally involves correspondingly greater expenses to the Fund, including brokerage commissions or dealer mark-ups and other transaction costs on the sale of securities and reinvestments in other securities. Sales of portfolio securities may also result in realization of taxable capital gains, including short-term capital gains (which are generally treated as ordinary income upon distribution in the form of dividends). The trading costs and tax effects associated with portfolio turnover may adversely affect the Fund's performance.

Please see "Investment Objectives and Policies" in the Statement of Additional Information for additional information regarding the investments of the Fund and their related risks.

The net proceeds the Fund obtains from reverse repurchase agreements, credit default swaps, dollar rolls or other forms of leverage utilized will be invested in accordance with the Fund's investment objectives and policies as described in this prospectus. So long as the rate of return, net of applicable Fund expenses, on the debt obligations and other investments purchased by the Fund exceeds the costs to the Fund of the leverage it utilizes, the investment of the Fund's assets attributable to leverage will generate more income than will be needed to pay the costs of the leverage. If so, and all other things being equal, the excess may be used to pay higher dividends to Common Shareholders than if the Fund were not so leveraged.

reverse repurchase agreements, dollar rolls, derivatives and certain other instruments by the segregation of liquid assets, or by entering into offsetting transactions or owning positions covering its obligations. To the extent that the Fund maintains segregated assets or otherwise covers certain of these instruments, they will not be considered "senior securities" under the 1940 Act and therefore will not be subject to the 1940 Act 300% asset coverage requirement otherwise applicable to forms of indebtedness used by the Fund. However, reverse repurchase agreements, dollar rolls and other such instruments, even if covered, may represent a form of economic leverage and create special risks. The use of these forms of leverage increases the volatility of the Fund's investment portfolio and could result in larger losses to Common Shareholders than if these strategies were not used. See "Principal Risks of the Fund – Leverage Risk." To the extent that the Fund engages in borrowings, it may prepay a portion of the principal amount of the borrowing to the extent necessary in order to maintain the required asset coverage. Failure to maintain certain asset coverage requirements could result in an event of default.

Leveraging is a speculative technique and there are special risks and costs involved. There is no assurance that the Fund will utilize reverse repurchase agreements, credit default swaps, dollar rolls or borrowings, issue preferred shares or utilize any other forms of leverage (such as the use of derivatives strategies). If used, there can be no assurance that the Fund's leveraging strategies will be successful or result in a higher yield on your Common Shares. When leverage is used, the NAV of the Common Shares and the yield to Common Shareholders will be more volatile. In addition, interest and other expenses borne by the Fund with respect to its use of reverse repurchase agreements, dollar rolls, borrowings or any other forms of leverage are borne by the Common Shareholders and result in a reduction of the NAV of the Common Shares. In addition, because the fees received by the Investment Manager are based on the average daily "total managed assets" of the Fund (including any assets attributable to any reverse repurchase agreements, dollar rolls, borrowings and any preferred shares that may be outstanding, if issued), the Investment Manager has a financial incentive for the Fund to use certain forms of leverage (e.g., reverse repurchase agreements, dollar rolls, borrowings and preferred shares), which may create a conflict of interest between the Investment Manager, on the one hand, and the Common Shareholders, on the other hand.

The Fund also may borrow money in order to repurchase its shares or as a temporary measure for extraordinary or emergency purposes, including for the payment of dividends or the settlement of securities transactions which otherwise might require untimely dispositions of portfolio securities held by the Fund.

The following table is furnished in response to requirements of the SEC. It is designed to illustrate the effects of leverage through the use of senior securities, as that term is defined under Section 18 of the 1940 Act, on Common Share total return, assuming investment portfolio total returns (consisting of income and changes in the value of investments held in the Fund's portfolio) of -10%, -5%, 0%, 5% and 10%. Although the Fund does not currently have a class of senior securities outstanding, the table below reflects the Fund's use of covered reverse repurchase agreements as of June 30, 2018 representing approximately 30.68% of the Fund's total managed assets (including assets attributable to such leverage) at an estimated annual effective interest expense rate of 2.15% payable by the Fund on such instruments (based on market conditions as of June 30, 2018). Based on such estimated annual effective interest expense rate, the annual return that the Fund's portfolio must experience (net of expenses) in order to cover such costs of the reverse repurchase agreements is 0.66%. The information below does not reflect the Fund's use of certain other forms of economic leverage achieved through the use of other instruments or transactions not considered to be senior securities under the 1940 Act, such as covered credit default swaps or other derivative instruments. The assumed investment portfolio returns in the table below are hypothetical figures and are not necessarily indicative of the investment portfolio returns experienced or expected to be experienced by the Fund. Your actual returns may be greater or less than those appearing below. In addition, actual borrowing expenses associated with reverse repurchase agreements (or dollar rolls or borrowings, if any) used by the Fund may vary frequently and may be significantly higher or lower that the rate used for the example below.

Common Shares Total Return is composed of two elements—the distributions paid by the Fund to holders of Common Shares (the amount of which is largely determined by the net investment income of the Fund after paying dividend payments on any preferred shares issued by the Fund and expenses on any forms of leverage outstanding) and gains or losses on the value of the securities and other instruments the Fund owns. As required by SEC rules, the table assumes that the Fund is more likely to suffer capital losses than to enjoy capital appreciation. For example, to assume a total return of 0%, the Fund must assume that the income it receives on its investments is entirely offset by losses in the value of those investments. This table reflects hypothetical performance of the Fund's portfolio and not the actual performance of the Fund's Common Shares, the value of which is determined by market forces and other factors.

Should the Fund elect to add additional leverage, any benefits of such additional leverage cannot be fully achieved until the proceeds resulting from the use of such leverage have been received by the Fund and invested in accordance with the Fund's investment objectives and policies. As noted above, the Fund's willingness to use additional leverage, and the extent to which leverage is used at any time, will depend on many factors, including, among other things, PIMCO's assessment of the yield curve environment, interest rate trends, market conditions and other factors.

The NAV of the Common Shares will fluctuate with and be affected by, among other things, various principal risks of the Fund and its investments which are summarized below. The Fund is subject to the principal risks noted below, whether through the Fund's direct investments, investments by its Subsidiaries or derivatives positions.

The Fund is a non-diversified, closed-end management investment company with a limited history of operations and is designed for long-term investors and not as a trading vehicle.

repurchases, interest on that borrowing will negatively affect Common Shareholders who do not tender their Common Shares by increasing the Fund's expenses and reducing any net investment income. If a repurchase offer is oversubscribed, the Board of Trustees of the Fund may determine to increase the amount repurchased by up to 2% of the Fund's outstanding shares as of the date of the Repurchase Request Deadline. In the event that the Board of Trustees of the Fund determines not to repurchase more than the repurchase offer amount, or if shareholders tender more than the repurchase offer amount plus 2% of the Fund's outstanding shares as of the date of the Repurchase Request Deadline, the Fund will repurchase the Common Shares tendered on a pro rata basis, and shareholders will have to wait until the next repurchase offer to make another repurchase request. As a result, shareholders may be unable to liquidate all or a given percentage of their investment in the Fund during a particular repurchase offer. Some shareholders, in anticipation of proration, may tender more Common Shares than they wish to have repurchased in a particular quarter, thereby increasing the likelihood that proration will occur. The NAV of Common Shares tendered in a repurchase offer may decline between the Repurchase Request Deadline and the date on which the NAV for tendered Common Shares is determined. In addition, the repurchase of Common Shares by the Fund may be a taxable event to shareholders.

During periods of very low or negative interest rates, the Fund may be unable to maintain positive returns. Interest rates in the United States and

many parts of the world, including certain European countries, are at or near historically low levels. Very low or negative interest rates may magnify interest rate risk. Changing interest rates, including rates that fall below zero, may have unpredictable effects on markets, may result in heightened market volatility and may detract from Fund performance to the extent the Fund is exposed to such interest rates.

The Fund may invest in a variety of mortgage-related and other asset-backed instruments issued by government agencies or other governmental entities or by private originators or issuers.

The mortgage-related assets in which the Fund may invest include, but are not limited to, any security, instrument or other asset that is related to U.S. or non U.S. mortgages, including those issued by private originators or issuers, or issued or guaranteed as to principal or interest by the U.S. Government or its agencies or instrumentalities or by non-U.S. governments or authorities, such as, without limitation, assets representing interests in, collateralized or backed by, or whose values are determined in whole or in part by reference to any number of mortgages or pools of mortgages or the payment experience of such mortgages or pools of mortgages, including Real Estate Mortgage Investment Conduits ("REMICs"), which could include resecuritizations of REMICs ("Re-REMICs"), mortgage pass-through securities, inverse floaters, collateralized mortgage obligations, collateralized

loan obligations, multiclass pass-through securities, private mortgage pass-through securities, stripped mortgage securities (generally interest-only and principal-only securities), mortgage-related asset backed securities and mortgage-related loans (including through participations, assignments, originations and whole loans), including commercial and residential mortgage loans. Exposures to mortgage-related assets through derivatives or other financial instruments will be considered investments in mortgage-related assets. The Fund may also invest in other types of asset-backed securities, including CDOs, CBOs and CLOs and other similarly structured securities. See "The Fund's Investment Objectives and Strategies—Portfolio Contents and Other Information—Mortgage-Related and Other Asset-Backed Instruments" in this prospectus and "Investment Objectives and Policies—Mortgage-Related and Other Asset-Backed Instruments" in the Statement of Additional Information for a description of the various mortgage-related and other asset-backed instruments in which the Fund may invest and their related risks.

have experienced serious financial difficulties or bankruptcy. Owing largely to the foregoing, reduced investor demand for mortgage loans and mortgage-related securities and increased investor yield requirements have caused limited liquidity in the secondary market for certain mortgage-related securities, which can adversely affect the market value of mortgage-related securities. It is possible that such limited liquidity in such secondary markets could continue or worsen.

creditworthiness of the borrower for payment of principal and interest. If the Fund does not receive scheduled interest or principal payments on such indebtedness, the Fund's share price and yield could be adversely affected. Loans that are fully secured offer the Fund more protection than an unsecured loan in the event of non-payment of scheduled interest or principal. However, there is no assurance that the liquidation of collateral from a secured loan would satisfy the borrower's obligation, or that the collateral can be liquidated.

The Fund may have difficulty disposing of loans and loan participations because to do so it will have to assign or sell such instruments to a third party. Because there is no liquid market for many loan instruments, the Fund anticipates that such instruments could be sold only to a limited number of institutional investors. The lack of a liquid secondary market may have an adverse impact on the value of such instruments and the Fund's ability to dispose of particular loans and loan participations when that would be desirable, including in response to a specific economic event such as a deterioration in the creditworthiness of the borrower. The lack of a liquid secondary market for loans and loan participations also may make it more difficult for the Fund to assign a value to these instruments for purposes of valuing the Fund's portfolio.

There may be less readily available information about most loans and the underlying borrowers than is the case for many other types of securities,

including securities issued in transactions registered under the Securities Act, or registered under the Exchange Act, and borrowers subject to the periodic reporting requirements of Section 13 of the Exchange Act. Loans may be issued by companies that are not subject to SEC reporting requirements and therefore may not be required to file reports with the SEC or may file reports that are not required to comply with SEC form requirements. In addition, such companies may be subject to a less stringent liability disclosure regime than companies subject to SEC reporting requirements. Loans may not be considered "securities," and purchasers, such as the Fund, therefore may not be entitled to rely on the anti-fraud protections of the federal securities laws. Because there is limited public information available regarding loan investments, the Fund is particularly dependent on the analytical abilities of the Fund's portfolio managers. These issues may be particularly pronounced with respect to loans made to individuals.

The Fund may seek to originate loans, including, without limitation, residential and/or commercial real estate or mortgage-related loans, consumer loans or other types of loans, which may be in the form of whole loans, secured and unsecured notes, senior and second lien loans, mezzanine loans or similar investments. The Fund may subsequently offer such investments for sale to third parties; provided, that there is no assurance that the Fund will complete the sale of such an investment. If the Fund is unable to sell, assign or successfully close transactions for the loans that it originates, the Fund will be forced to hold its interest in such loans for an indeterminate period of time. This could result in the Fund's investments being over-concentrated in certain borrowers. The Fund will be responsible for the expenses associated with originating a loan (whether or not consummated). This may include significant legal and due diligence expenses, which will be indirectly borne by the Fund and Common Shareholders.

The Fund may have limited knowledge about the underlying loans and is dependent upon the platform for information regarding underlying loans. In considering alternative lending related instruments for the Fund, PIMCO may perform diligence on the platforms from which the Fund may purchase such instruments. Among other factors, PIMCO may evaluate the process by which each platform extends loans and loan-related services to borrowers, as well as general characteristics of the loans made available through each platform. PIMCO may also engage a loan verification agent or other third party to perform confirmatory diligence on samples of loans, either prior to or following purchase. Although the Fund conducts this diligence on the platforms, the Fund generally does not have the ability to independently verify the information provided by the platforms, other than payment information regarding loans and other alternative lending-related instruments owned by the Fund, which the Fund observes directly as payments are received. The Fund may not review the particular characteristics of the loans in which it invests at the time of investment, but rather negotiate in advance with platforms the general criteria of the investments. As a result, the Fund is dependent on the platforms' ability to collect, verify and provide information to the Fund about each loan and borrower.

payments on its obligations to the Fund, even if the payments on the underlying loan or loans continue to be made timely and in full. In addition, when the Fund owns such fractional loans or other instruments, the Fund and its custodian generally does not have a contractual relationship with, or personally identifiable information regarding, individual borrowers, so the Fund will not be able to enforce underlying loans directly against borrowers and may not be able to appoint an alternative servicing agent in the event that a platform or third-party servicer, as applicable, ceases to service the underlying loans. Therefore, the Fund is more dependent on the platform for servicing than in the case in which the Fund owns whole loans. Where such interests are secured, the Fund relies on the platform to perfect the Fund's security interest. In addition, there may be a delay between the time the Fund commits to purchase an instrument issued by a platform, its affiliate or a special purpose entity sponsored by the platform or its affiliate and the issuance of such instrument and, during such delay, the funds committed to such an investment will not earn interest on the investment nor will they be available for investment in other alternative lending-related instruments, which will reduce the effective rate of return on the investment.

To the extent consistent with the applicable liquidity requirements for interval funds under Rule 23c-3 of the 1940 Act, the Fund may invest without limit in illiquid securities. Liquidity risk exists when particular investments are difficult to purchase or sell at the time that the Fund would like or at the price that the Fund believes such investments are currently worth. Many of the Fund's investments may be illiquid. Illiquid securities may become harder to value, especially in changing markets. The Fund's investments in illiquid securities may reduce the returns of the Fund because it may be unable to sell the illiquid securities at an advantageous time or price or possibly require the Fund to dispose of other investments at unfavorable times or prices in order to satisfy its obligations, which could prevent the Fund from taking advantage of other investment opportunities. Additionally, the market for certain investments may become illiquid under adverse market or economic conditions independent of any specific adverse changes in the conditions of a particular issuer. Bond markets have consistently grown over the past three decades while the capacity for traditional dealer counterparties to engage in fixed income trading has not kept pace and in some cases has decreased. As a result, dealer inventories of corporate bonds, which provide a core indication of the ability of financial intermediaries to "make markets," are at or near historic lows in relation to market size. Because market makers seek to provide stability to a market through their intermediary services, the significant reduction in dealer inventories could potentially lead to decreased liquidity and increased volatility in the fixed income markets. Such issues may be exacerbated during periods of economic uncertainty. In such cases, the Fund, due to limitations on investments in illiquid securities and the difficulty in purchasing and selling such securities or instruments, may be unable to achieve its desired level of exposure to a certain sector. To the extent that the Fund's principal investment strategies involve securities of companies with smaller market capitalizations, foreign (non-U.S.) securities, Rule 144A securities, senior loans, illiquid sectors of fixed income securities, derivatives or securities with substantial market and/or credit risk, the Fund will tend to have the greatest exposure to liquidity risk. Further, fixed income securities with longer durations until maturity face heightened levels of liquidity risk as compared to fixed income securities with shorter durations until maturity. The risks associated with illiquid instruments may be particularly acute in situations in which the Fund's operations require cash (such as in connection with repurchase offers) and could result in the Fund borrowing to meet its short-term needs or incurring losses on the sale of illiquid instruments. See "Principal Risks of the Fund – Repurchase Offers Risk." It may also be the case that other market participants may be attempting to liquidate fixed income holdings at the same time as the Fund, causing increased supply in the market and contributing to liquidity risk and downward pricing pressure. See "Principal Risks of the Fund— Valuation Risk." The alternative lending-related instruments in which the Fund invests are typically contractually non-transferable, not listed on any securities exchange and not registered under the Securities Act. In addition, the Fund anticipates that these instruments may only be sold to a limited number of investors and may have a limited or non-existent secondary market. Accordingly, the Fund currently expects that most of its investments in alternative lending-related instruments will face heightened levels of liquidity risk.

standards of foreign countries differ, in some cases significantly, from U.S. standards. Global economies and financial markets are becoming increasingly interconnected, and conditions and events in one country, region or financial market may adversely impact issuers in a different country, region or financial market. Also, nationalization, expropriation or confiscatory taxation, currency blockage, political changes or diplomatic developments could adversely affect the Fund's investments in a foreign country. In the event of nationalization, expropriation or other confiscation, the Fund could lose its entire investment in foreign (non-U.S.) securities. Adverse conditions in a certain region can adversely affect securities of other countries whose economies appear to be unrelated. To the extent that the Fund invests a significant portion of its assets in a specific geographic region, the Fund will generally have more exposure to regional economic risks associated with foreign (non-U.S.) investments. Foreign (non-U.S.) securities may also be less liquid and more difficult to value than securities of U.S. issuers.

Investments in emerging market countries pose a greater degree of systemic risk (i.e., the risk of a cascading collapse of multiple institutions within a country, and even multiple national economies). The inter-relatedness of economic and financial institutions within and among emerging market economies has deepened over the years, with the effect that institutional failures and/or economic difficulties that are of initially limited scope may spread throughout a country, a region or even among all or most emerging market countries. This may undermine any attempt by the Fund to reduce risk through geographic diversification of its portfolio investments among emerging market countries.

There is also a greater risk that an emerging market government may take action that impedes or prevents the Fund from taking income and/or capital gains earned in the local currency and converting into U.S. dollars (i.e., "repatriating" local currency investments or profits). Certain emerging market countries have sought to maintain foreign exchange reserves and/or address the economic volatility and dislocations caused by the large international capital flows by controlling or restricting the conversion of the local currency into other currencies. This risk tends to become more acute when economic conditions otherwise worsen. There can be no assurance that if the Fund earns income or capital gains in an emerging market currency or PIMCO otherwise seeks to withdraw the Fund's investments from a given emerging market country, capital controls imposed by such country will not prevent, or cause significant expense in, doing so.

Bankruptcy law and creditor reorganization processes may differ substantially from those in the United States, resulting in greater uncertainty as to the rights of creditors, the enforceability of such rights, reorganization timing and the classification, seniority and treatment of claims. In certain emerging market countries, although bankruptcy laws have been enacted, the process for reorganization remains highly uncertain. In addition, it may be impossible to seek legal redress against an issuer that is a sovereign state.

To the extent that the Fund invests in real estate related investments, including REITs, real estate-related loans or real-estate linked derivative instruments, it will be subject to the risks associated with owning real estate and with the real estate industry generally. These include difficulties in valuing and disposing of real estate, the possibility of declines in the value of real estate, risks related to general and local economic conditions, the possibility of adverse changes in the climate for real estate, environmental liability risks, the risk of increases in property taxes and operating expenses, possible adverse changes in zoning laws, the risk of casualty or condemnation losses, limitations on rents, the possibility of adverse changes in interest rates and in the credit markets and the possibility of borrowers paying off mortgages sooner than expected, which may lead to reinvestment of assets at lower prevailing interest rates. To the extent that the Fund invests in REITs, it will also be subject to the risk that a REIT may default on its obligations or go bankrupt. By investing in REITs indirectly through the Fund, a shareholder will indirectly bear his or her proportionate share of the expenses of the REITs. The Fund's investments in REITs could cause the Fund to recognize income in excess of cash received from those securities and, as a result, the Fund may be required to sell portfolio securities, including when it is not advantageous to do so, in order to make distributions. An investment in a REIT or a real estate-linked derivative instrument that is linked to the value of a REIT is subject to additional risks, such as poor performance by the manager of the REIT, adverse changes to the tax laws or failure by the REIT to qualify for tax-free pass-through of income under the Code. In addition, some REITs have limited diversification because they invest in a limited number of properties, a narrow geographic area, or a single type of property. Also, the organizational documents of a REIT may contain provisions that make changes in control of the REIT difficult and time-consuming. Finally, private REITs are not traded on a national securities exchange. As such, these products are generally illiquid. This reduces the ability of the Fund to redeem its investment early. Private REITs are also generally harder to value and may bear higher fees than public REITs.

The Fund may invest in debt securities issued or guaranteed by agencies, instrumentalities and sponsored enterprises of the U.S. Government. Some U.S. Government securities, such as U.S. Treasury bills, notes and bonds, and mortgage-related securities guaranteed by the GNMA, are supported by the full faith and credit of the United States; others, such as those of the FHLBs or the FHLMC, are supported by the right of the issuer to borrow from the U.S. Treasury; others, such as those of the Federal National Mortgage Association ("FNMA"), are supported by the discretionary authority of the U.S. Government to purchase the agency's obligations; and still others are supported only by the credit of the issuing agency, instrumentality or corporation. Although legislation has been enacted to support certain government sponsored entities, including the FHLBs, FHLMC and FNMA, there is no assurance that the obligations of such entities will be satisfied in full, or that such obligations will not decrease in value or default. It is difficult, if not impossible, to predict the future political, regulatory or economic changes that could impact the government sponsored entities and the values of their related securities or obligations. In addition, certain governmental entities, including the FNMA and FHLMC, have been subject to regulatory scrutiny regarding their accounting policies and practices and other concerns that may result in legislation, changes in regulatory oversight and/or other consequences that could adversely affect the credit quality, availability or investment character of securities issued by these entities. See "Investment Objectives and Policies—Mortgage-Related and Other Asset-Backed Instruments" in the Statement of Additional Information.

The Fund's investments in Foreign Government Securities can involve a high degree of risk. The foreign governmental entity that controls the repayment of debt may not be able or willing to repay the principal and/or interest when due in accordance with the terms of such debt. A governmental entity's willingness or ability to repay principal and interest due in a timely manner may be affected by, among other factors, its cash flow situation, the extent of its foreign reserves, the availability of sufficient foreign exchange on the date a payment is due, the relative size of the debt service burden to the economy as a whole, the governmental entity's policy towards the International Monetary Fund and the political constraints to which a governmental entity may be subject. Foreign governmental entities also may be dependent on expected disbursements from other governments, multilateral agencies and others abroad to reduce principal and interest arrearages on their debt. The commitment on the part of these governments, agencies and others to make such disbursements may be conditioned on the implementation of economic reforms and/or economic performance and the timely service of such debtor's obligations. Failure to implement such reforms, achieve such levels of economic performance or repay principal or interest when due may result in the cancellation of such third parties' commitments to lend funds to the foreign governmental entity, which may further impair such debtor's ability or willingness to timely service its debts. Consequently, foreign governmental entities may default on their debt. Holders of Foreign Government Securities may be requested to participate in the rescheduling of such debt and to extend further loans to governmental entities. In the event of a default by a governmental entity, there may be few or no effective legal remedies for collecting on such debt. These risks are particularly severe with respect to the Fund's investments in Foreign Government Securities of emerging market countries. See "Principal Risks of the Fund—Emerging Markets Risk." Among other risks, if the Fund's investments in Foreign Government Securities issued by an emerging market country need to be liquidated quickly, the Fund could sustain significant transaction costs. Also, governments in many emerging market countries participate to a significant degree in their economies and securities markets, which may impair investment and economic growth, and which may in turn diminish the value of the Fund's holdings in emerging

market Foreign Government Securities and the currencies in which they are denominated and/or pay revenues.

The risks of investing in contingent convertible securities ("CoCos") include, without limitation, the risk that interest payments will be cancelled by the issuer or a regulatory authority, the risk of ranking junior to other creditors in the event of a liquidation or other bankruptcy-related event as a result of holding subordinated debt, the risk of the Fund's investment becoming further subordinated as a result of conversion from debt to equity, the risk that the principal amount due can be written down to a lesser amount, and the general risks applicable to fixed income investments, including interest rate risk, credit risk, market risk and liquidity risk, any of which could result in losses to the Fund. CoCos may experience a loss absorption mechanism trigger event, which would likely be the result of, or related to, the deterioration of the issuer's financial condition (e.g., a decrease in the issuer's capital ratio) and status as a going concern. In such a case, with respect to contingent convertible securities that provide for conversion into common stock upon the occurrence of the trigger event, the market price of the issuer's common stock received by the Fund will have likely declined, perhaps substantially, and may continue to decline, which may adversely affect the Fund's net asset value.

Leverage creates several major types of risks for Common Shareholders, including:

the likelihood of greater volatility of NAV of Common Shares, and of the investment return to Common Shareholders, than a comparable portfolio without leverage;

In addition, the counterparties to the Fund's leveraging transactions and any preferred shareholders of the Fund will have priority of payment over the Fund's Common Shareholders.

Because the fees received by the Investment Manager are based on the average daily "total managed assets" of the Fund (including assets attributable to any reverse repurchase agreements, dollar rolls, borrowings and preferred shares that may be outstanding) minus accrued liabilities (other than liabilities representing reverse repurchase agreements, dollar rolls and borrowings), the Investment Manager has a financial incentive for the Fund to use certain forms of leverage (e.g., reverse repurchase agreements, dollar rolls and borrowings) or to issue preferred shares, which may create a conflict of interest between the Investment Manager, on the one hand, and the Common Shareholders, on the other hand.

swap agreements. The Fund may also have exposure to derivatives, such as interest rate or credit-default swaps, through investment in credit-linked trust certificates and other securities issued by special purpose or structured vehicles. The Fund's use of derivative instruments involves risks different from, and possibly greater than, the risks associated with investing directly in securities and other traditional investments. Derivatives are subject to a number of risks described elsewhere in this prospectus, such as liquidity risk, interest rate risk, issuer risk, credit risk, leveraging risk, counterparty risk and management risk. See "Principal Risks of the Fund—Segregation and Coverage Risk." They also involve the risk of mispricing or improper valuation, the risk of unfavorable or ambiguous documentation and the risk that changes in the value of the derivative may not correlate perfectly with the underlying asset, rate or index. If the Fund invests in a derivative instrument, it could lose more than the principal amount invested. Also, suitable derivative transactions may not be available in all circumstances and there can be no assurance that the Fund will engage in these transactions to reduce exposure to other risks when that would be beneficial. The Fund's use of derivatives also may affect the amount, timing or character of distributions to, and taxes payable by Common Shareholders. See "Tax Matters."

The regulation of the derivatives markets has increased over the past several years, and additional future regulation of the derivatives markets may make derivatives more costly, may limit the availability or reduce the liquidity of derivatives, or may otherwise adversely affect the value or performance of derivatives. Any such adverse future developments could impair the effectiveness of the Fund's derivative transactions and cause the Fund to lose value. For instance, in December 2015, the SEC proposed new regulations applicable to a registered investment company's use of derivatives and related instruments. If adopted as proposed, these regulations could significantly limit or impact the Fund's ability to invest in derivatives and other instruments, limit the Fund's ability to employ certain strategies that use derivatives and/or adversely affect the Fund's performance, efficiency in implementing its strategy, liquidity and/or ability to pursue its investment objectives.

the event that the Fund enters into a derivative transaction with a counterparty that subsequently becomes insolvent or becomes the subject of a bankruptcy case, the derivative transaction may be terminated in accordance with its terms and the Fund's ability to realize its rights under the derivative instrument and its ability to distribute the proceeds could be adversely affected. If a counterparty becomes bankrupt or otherwise fails to perform its obligations under a derivative contract due to financial difficulties, the Fund may experience significant delays in obtaining any recovery (including recovery of any collateral it has provided to the counterparty) in a dissolution, assignment for the benefit of creditors, liquidation, winding-up, bankruptcy, or other analogous proceeding. In addition, in the event of the insolvency of a counterparty to a derivative transaction, the derivative transaction would typically be terminated at its fair market value. If the Fund is owed this fair market value in the termination of the derivative transaction and its claim is unsecured, the Fund will be treated as a general creditor of such counterparty, and will not have any claim with respect to any underlying security or asset. The Fund may obtain only a limited recovery or may obtain no recovery in such circumstances.

In managing the Fund, PIMCO may from time to time have the opportunity to receive Confidential Information about the issuers of certain investments, including, without limitation, senior floating rate loans, other loans and related investments being considered for acquisition by the Fund or held in the Fund's portfolio. For example, an issuer of privately placed loans considered by the Fund may offer to provide PIMCO with financial information and related documentation regarding the issuer that is not publicly available. Pursuant to applicable policies and procedures, PIMCO may (but is not required to) seek to avoid receipt of Confidential Information from the issuer so as to avoid possible restrictions on its ability to purchase and sell investments on behalf of the Fund and other clients to which such Confidential Information relates (e.g., other securities issued by the bank used in the example above). In such circumstances, the Fund (and other PIMCO clients) may be disadvantaged in comparison to other investors, including with respect to the price the Fund pays or receives when it buys or sells an investment. Further, PIMCO's and the Fund's abilities to assess the desirability of proposed consents, waivers or amendments with respect to certain investments may be compromised if they are not privy to available Confidential Information. PIMCO may also determine to receive such Confidential Information in certain circumstances under its applicable policies and procedures. If PIMCO intentionally or unintentionally comes into possession of Confidential Information, it may be unable, potentially for a substantial period of time, to purchase or sell investments to which such Confidential Information relates.

Legal, tax and regulatory changes could occur and may adversely affect the Fund and its ability to pursue its investment strategies and/or increase the costs of implementing such strategies. New (or revised) laws or regulations may be imposed by the CFTC, the SEC, the IRS, the U.S. Federal Reserve or other banking regulators, other governmental regulatory authorities or self-regulatory organizations that supervise the financial markets that could adversely affect the Fund. In particular, these agencies are implementing a variety of new rules pursuant to financial reform legislation in the United States. The EU (and some other countries) are implementing similar requirements. The Fund also may be adversely affected by changes in the enforcement or interpretation of existing statutes and rules by these governmental regulatory authorities or self-regulatory organizations.

Actions by governmental entities may also impact certain instruments in which the Fund invests. For example, certain instruments in which the Fund may invest rely in some fashion upon the LIBOR. LIBOR is an average interest rate, determined by the ICE Benchmark Administration, that banks charge one another for the use of short-term money. The United Kingdom's Financial Conduct Authority, which regulates LIBOR, has announced plans to phase out the use of LIBOR by the end of 2021. There remains uncertainty regarding the future utilization of LIBOR and the nature of any replacement rate, and any potential effects of the transition away from LIBOR on the Fund or on certain instruments in which the Fund invests are not known. The transition process may involve, among other things, increased volatility or illiquidity in markets for instruments that currently rely on LIBOR. The transition may also result in a reduction in the value of certain instruments held by the Fund or reduce the effectiveness of related Fund transactions such as hedges. Any such effects of the transition away from LIBOR, as well as other unforeseen effects, could result in losses to the Fund.

Potential Conflicts of Interest Risk—Allocation of Investment Opportunities

The Fund may enter into repurchase agreements, in which the Fund purchases a security from a bank or broker-dealer, which agrees to

repurchase the security at the Fund's cost plus interest within a specified time. If the party agreeing to repurchase should default, the Fund will seek to sell the securities which it holds. This could involve procedural costs or delays in addition to a loss on the securities if their value should fall below their repurchase price. Repurchase agreements maturing in more than seven days and which may not be terminated within seven days at approximately the amount at which the Fund has valued the agreements are considered illiquid securities. These events could also trigger adverse tax consequences for the Fund.

For the purpose of achieving income, the Fund may lend its portfolio securities to brokers, dealers, and other financial institutions provided a number of conditions are satisfied, including that the loan is fully collateralized. Please see "Investment Objectives and Policies—Loans of Portfolio Securities" in the Statement of Additional Information for more details. When the Fund lends portfolio securities, its investment performance will continue to reflect changes in the value of the securities loaned, and the Fund will also receive a fee or interest on the collateral. Securities lending involves the risk of loss of rights in the collateral or delay in recovery of the collateral if the borrower fails to return the security loaned or becomes insolvent. The Fund may pay lending fees to a party arranging the loan. Cash collateral received by the Fund in securities lending transactions may be invested in short-term liquid fixed income instruments or in money market or short-term mutual funds, or similar investment vehicles, including affiliated money market or short-term mutual funds. The Fund bears the risk of such investments.

any of which could have a material adverse effect on the Fund. While the Fund seeks to minimize such events through controls and oversight, there may still be failures that could cause losses to the Fund.

The Fund's Declaration includes provisions that could limit the ability of other entities or persons to acquire control of the Fund or to convert the Fund to open-end status. See "Anti-Takeover and Other Provisions in the Declaration of Trust."

The Fund may (but is not required to) use various investment strategies to seek exposure to foreign currencies, or attempt to hedge exposure to reduce the risk of loss and preserve capital, due to fluctuations in currency exchange rates relative to the U.S. dollar. See "The Fund's Investment Objectives and Strategies—Portfolio Contents and Other Information— Foreign Currencies and Related Transactions." The Fund may also purchase credit default swaps for the purpose of hedging the Fund's credit exposure to certain issuers and, thereby, seek to decrease its exposure to credit risk, and it may invest in structured notes or interest rate futures contracts or swap, cap, floor or collar transactions for the purpose of reducing the interest rate sensitivity of the Fund's portfolio and, thereby, seek to decrease the Fund's exposure to interest rate risk. See "The Fund's Investment Objectives and Strategies—Portfolio Contents and Other Information— Credit Default Swaps," "The Fund's Investment Objectives and Strategies— Portfolio Contents and Other Information—Structured Notes and Related Instruments" and "The Fund's Investment Objectives and Strategies— Portfolio Contents and Other Information—Certain Interest Rate Transactions" in this prospectus. Other derivatives strategies and instruments that the Fund may use include, without limitation, financial futures contracts; short sales; other types of swap agreements or options thereon; options on financial futures; and options based on either an index or individual debt securities whose prices, PIMCO believes, correlate with the prices of the Fund's investments. Income earned by the Fund from its hedging and related transactions may be subject to one or more special U.S. federal income tax rules that can affect the amount, timing and/or character of distributions to Common Shareholders. For instance, income earned by the Fund from its foreign currency hedging activities, if any, may

give rise to ordinary income that, to the extent not offset by losses from such activities, may be distributed to Common Shareholders and taxable at ordinary income rates. Therefore, any foreign currency hedging activities by the Fund can increase the amount of distributions taxable to Common Shareholders as ordinary income. See "Tax Matters." There is no assurance that these hedging strategies will be available at any time or that PIMCO will determine to use them for the Fund or, if used, that the strategies will be successful. PIMCO may determine not to engage in hedging strategies or to do so only in unusual circumstances or market conditions. In addition, the Fund may be subject to certain restrictions on its use of hedging strategies imposed by guidelines of one or more regulatory authorities or ratings agencies that may issue ratings on any preferred shares issued by the Fund.

The Board is responsible for the management of the Fund, including supervision of the duties performed by the Investment Manager. There are currently eight trustees of the Fund, two of whom are treated by the Fund as "interested persons" (as defined in the 1940 Act). The names and business addresses of the trustees and officers of the Fund and their principal occupations and other affiliations during the past five years are set forth under "Management of the Fund" in the Statement of Additional Information.

PIMCO serves as the investment manager for the Fund. Subject to the supervision of the Board, PIMCO is responsible for managing the investment activities of the Fund and the Fund's business affairs and other administrative matters.

PIMCO may retain affiliates to provide various administrative and other services required by the Fund.

Pursuant to an investment management agreement between the Investment Manager and the Fund (the "Investment Management Agreement"), the Fund has agreed to pay the Investment Manager an annual fee, payable monthly, in an amount equal to 1.30% of the Fund's "total managed assets." "Total managed assets" means the total assets of the Fund (including assets attributable to any reverse repurchase agreements, dollar rolls, borrowings and preferred shares that may be outstanding) minus accrued liabilities (other than liabilities representing reverse repurchase agreements, dollar rolls and borrowings). For purposes of calculating "total managed assets," the liquidation preference of any preferred shares outstanding is not considered a liability. By way of clarification, with respect to any reverse repurchase agreement, dollar roll or similar transaction, "total managed assets" include any proceeds from the sale of an asset of the Fund to a counterparty in such a transaction, in addition to the value of the underlying asset as of the relevant measuring date. In addition, for purposes of calculating "total managed assets," the Fund's derivative investments will be valued based on their market value.

Pursuant to the Investment Management Agreement, PIMCO shall provide to the Fund investment guidance and policy direction in connection with the management of the Fund, including oral and written research, analysis, advice and statistical and economic data and information. In addition, under the terms of the Investment Management Agreement, subject to the general supervision of the Board of Trustees, PIMCO provides or causes to be furnished all supervisory and administrative and other services reasonably necessary for the operation of the Fund under the unified management fee, including but not limited to the supervision and coordination of matters relating to the operation of the Fund, including any necessary coordination among the custodian, transfer agent, dividend disbursing agent, and recordkeeping agent (including pricing and valuation of the Fund), accountants, attorneys, and other parties performing services or operational functions for the Fund; the provision of adequate personnel, office space, communications facilities, and other facilities necessary for the effective supervision and administration of the Fund, as well as the services of a sufficient number of persons competent to perform such supervisory and administrative and clerical functions as are necessary for compliance with federal securities laws and other applicable laws; the maintenance of the books and records of the Fund; the preparation of all federal, state, local and foreign tax returns and reports for the Fund; the preparation, filing and distribution of any proxy materials (except as provided below), periodic reports to shareholders and other regulatory filings; the provision of administrative services to shareholders for the Fund including the maintenance of a shareholder information telephone number, the provision of certain statistical information and performance of the Fund, an internet website (if requested), and maintenance of privacy protection systems and procedures; the preparation and filing of such registration statements and other documents with such authorities as may be required to register a new class of shares of the Fund; the taking of other such actions as may be required by applicable law (including establishment and maintenance of a compliance program for the Fund); and the provision of administrative services to shareholders as necessary, including: the maintenance of a shareholder call center; shareholder transaction processing; the provision of certain statistical information and performance of the Fund; a web servicing platform and internet website; access by PIMCO representatives to databases to assist with shareholder inquiries and reports; oversight of anti-money laundering monitoring systems and procedures; repurchase fee application and monitoring systems and procedures; and processing of client registration applications.

Under the Investment Management Agreement, PIMCO will pay all expenses incurred by it in connection with its obligations under the Investment Management Agreement with respect to the Fund, with the exception of certain expenses that are assumed by the Fund pursuant to the Investment Management Agreement. In addition, PIMCO is responsible for the following costs expenses: expenses of all audits by the Fund's independent public accountants; expenses of the Fund's transfer agent, registrar, dividend disbursing agent, and recordkeeping agent; expenses and fees paid to agents and intermediaries for sub-transfer agency, sub-accounting and other shareholder services on behalf of shareholders of Shares of the Fund (or Shares of a particular Share class) held through omnibus and networked, record shareholder accounts (together, "Sub-Transfer Agency Expenses"), except where Sub-Transfer Agency Expenses are paid pursuant to a Rule 12b-1 or similar plan adopted by the Board of Trustees of the Fund; expenses of the Fund's custodial

services, including any recordkeeping services provided by the custodian; expenses of obtaining quotations for calculating the value of the Fund's net assets; expenses of maintaining the Fund's tax records; certain expenses and fees, including legal fees, incident to meetings of the Fund's shareholders; certain expenses associated with the preparation, printing and distribution of the Fund's prospectuses, notices and proxy statements, press releases and reports to existing shareholders; certain expenses associated with the preparation and filing of registration statements and updates thereto and reports with regulatory bodies; expenses associated with the maintenance of the Fund's existence and qualification to do business; expenses (including registration fees) of issuing, redeeming and repurchasing (including expenses associated with the Fund's repurchases pursuant to Rule 23c-3 under the 1940 Act); expenses associated with registering and qualifying for sale Common Shares with federal and state securities authorities following the initial registration of its Common Shares under the Securities Act (i.e., that are not organizational and offering expenses of the Fund specified below) and following any registration of a new class of shares of the Fund subsequent to its initial registration; and the expense of qualifying and listing existing Common Shares with any securities exchange or other trading system; the Fund's ordinary legal fees, including the legal fees that arise in the ordinary course of business for a Massachusetts business trust, registered as a closed-end management investment company and, as applicable, that operates as an "interval fund" pursuant to Rule 23c-3 under the 1940 Act, or that is listed for trading with a securities exchange or other trading system; costs of printing certificates representing Common Shares of the Fund, if any; the Fund's pro rata portion of the fidelity bond required by Section 17(g) of the 1940 Act, or other insurance premiums; and organizational and offering expenses, including registration (including share registration) fees, legal, marketing, printing, accounting and other expenses, in connection with any registration of a new class of shares of the Fund subsequent to its initial registration.

The Fund (and not PIMCO) is responsible for certain fees and expenses that are not covered by the unified management fee under the Investment Management Agreement. These include salaries and other compensation or expenses, including travel expenses, of any of the Fund's executive officers and employees, if any, who are not officers, directors, shareholders, members, partners or employees of PIMCO or its subsidiaries or affiliates; taxes and governmental fees, if any, levied against the Fund; brokerage fees and commissions, and other portfolio transaction expenses incurred by or for the Fund (including, without limitation, fees and expenses of outside legal counsel or third-party consultants retained in connection with reviewing, negotiating and structuring specialized loans and other investments made by the Fund, and any costs associated with originating loans, asset securitizations, alternative lending-related strategies and so-called "broken-deal costs" (e.g., fees, costs, expenses and liabilities, including, for example, due diligence-related fees, costs, expenses and liabilities, with respect to unconsummated investments)); expenses of the Fund's securities lending (if any), including any securities lending agent fees, as governed by a separate securities lending agreement; costs, including interest expenses, of borrowing money or engaging in other types of leverage financing including, without limitation, through the use by the Fund of reverse repurchase agreements, dollar rolls, bank borrowings, credit facilities and tender option bonds; costs, including dividend and/or interest expenses and other costs (including, without limitation, offering and related legal costs, fees to brokers, fees to auction agents, fees to transfer agents, fees to ratings agencies and fees to auditors associated with satisfying ratings agency requirements for preferred shares or other securities issued by the Fund and other related requirements in the Fund's organizational documents) associated with the Fund's issuance, offering, redemption and maintenance of preferred shares, commercial paper or other instruments (such as the use of reverse repurchase agreements, dollar rolls, bank borrowings, credit facilities and tender option bonds) for the purpose of incurring leverage; fees and expenses of any underlying funds or other pooled vehicles in which the Fund invests; dividend and interest expenses on short positions taken by the Fund; fees and expenses, including travel expenses, and fees and expenses of legal counsel retained for their benefit, of Trustees who are not officers, employees, partners, shareholders or members of PIMCO or its subsidiaries or affiliates; extraordinary expenses, including extraordinary legal expenses, as may arise, including, without limitation, expenses incurred in connection with litigation, proceedings, other claims, and the legal obligations of the Fund to indemnify its Trustees, officers, employees, shareholders, distributors, and agents with respect thereto; fees and expenses, including legal, printing and mailing, solicitation and other fees and expenses associated with and incident to shareholder meetings and proxy solicitations involving contested elections of Trustees, shareholder proposals or other non-routine matters that are not initiated or proposed by Fund management; organizational and offering expenses of the Fund, including registration (including Share registration fees), legal, marketing, printing, accounting and other expenses, associated with organizing the Fund in its state of jurisdiction and in connection with the initial registration of the Fund under the 1940 Act and the initial registration of its Common Shares under the Securities Act (i.e., through the effectiveness of the Fund's initial registration statement on Form N-2) and fees and expenses associated with seeking, applying for and obtaining formal exemptive, no-action and/or other relief from the SEC in connection with the issuance of multiple share classes; except as otherwise provided as an expense of PIMCO, any expenses allocated or allocable to a specific class of Common Shares, including without limitation sub-transfer agency expenses and distribution and/or services fees paid pursuant to a Rule 12b-1 or similar plan adopted by the Board of Trustees of the Fund for a particular share class; and expenses of the Fund which are capitalized in accordance with generally accepted accounting principles.

PIMCO may earn a profit on the management fee paid by the Fund. Also, under the terms of the Investment Management Agreement, PIMCO, and not Common Shareholders, would benefit from any price decreases in third-party services, including decreases resulting from an increase in net assets.

Because the management fee received by PIMCO is based on the average daily total managed assets of the Fund (including assets attributable to any reverse repurchase agreements, dollar rolls, borrowings and preferred shares that may be outstanding), PIMCO has a financial incentive for the Fund to utilize reverse repurchase agreements, dollar rolls and borrowings or to issue preferred shares, which may create a conflict of interest between PIMCO, on the one hand, and Common Shareholders, on the other hand.

A discussion regarding the basis for the Board of Trustees' approval of the Investment Management Agreement is available in the Fund's annual report to shareholders for the fiscal period ended June 30, 2018.

The Statement of Additional Information provides additional information about the portfolio managers' compensation, other accounts managed by the portfolio managers and the portfolio managers' ownership of securities in the Fund.

A control person is a person who owns, either directly or indirectly, beneficially more than 25% of the voting securities of a company. As of October 5, 2018, the Fund did not know of any person or entity who "controlled" the Fund.

The Trustees are responsible generally for overseeing the management of the Fund. The Trustees authorize the Fund to enter into service agreements with the Investment Manager, the Distributor, and other service providers in order to provide, and in some cases authorize service providers to procure through other parties, necessary or desirable services on behalf of the Fund. Shareholders are not intended to be third-party beneficiaries of such service agreements.

Neither this prospectus, the Fund's Statement of Additional Information, any contracts filed as exhibits to the Fund's registration statement, nor any other communications or disclosure documents from or on behalf of the Fund creates a contract between a shareholder of the Fund and the Fund, a service provider to the Fund, and/or the Trusts or officers of the Fund. The Trustees may amend this prospectus, the Statement of Additional Information, and any other contracts to which the Fund is a party, and interpret the investment objectives, policies, restrictions and contractual provisions applicable to the Fund without shareholder input or approval, except in circumstances in which shareholder approval is specifically required by law (such changes to fundamental investment policies) or where a shareholder approval requirement is specifically disclosed in the Fund prospectus or Statement of Additional Information.

PIMCO Investments LLC (the "Distributor"), an affiliate of PIMCO, serves as the principal underwriter and distributor of the Fund's Common Shares pursuant to a distribution contract (the "Distribution Contract") with the Fund. The Distributor, located at 1633 Broadway, New York, New York 10019, is a broker-dealer registered with the SEC and is a member of the Financial Industry Regulatory Authority ("FINRA"). The Distributor is a wholly-owned subsidiary of PIMCO and an indirect subsidiary of Allianz Asset Management. The Distributor does not participate in the distribution of non-PIMCO managed registered fund products.

The Distributor acts as the distributor of Common Shares for the Fund on a best efforts basis, subject to various conditions, pursuant to the terms of the Distribution Contract. The Distributor is not obligated to sell any specific amount of Common Shares of the Fund.

Common Shares of the Fund are continuously offered through the Distributor and/or certain financial intermediaries that have agreements with the Distributor. As discussed below, the Fund may authorize one or more intermediaries (e.g., broker-dealers and other financial firms) to receive orders on its behalf. The Common Shares will be offered at NAV per share calculated each regular business day. Please see "Net Asset Value" below.

The Fund and the Distributor have the sole right to accept orders to purchase Common Shares and reserve the right to reject any order in whole or in part.

The Fund's Common Shares are not listed for trading on any securities exchange. There is currently no secondary market for the Fund's Common Shares and the Fund does not anticipate that a secondary market will develop for its Common Shares. Investors should consider Common Shares of the Fund to be an illiquid investment. Neither the Investment Manager nor the Distributor intends to make a market in the Fund's Common Shares.

The Fund has agreed to indemnify the Distributor and certain of the Distributor's affiliates against certain liabilities, including certain liabilities arising under the Securities Act. To the extent consistent with applicable law, the Distributor has agreed to indemnify the Fund and each Trustee against certain liabilities under the Securities Act and in connection with the services rendered to the Fund.

The Fund has adopted a Multi-Class Plan pursuant to Rule 18f-3 under the 1940 Act. Although the Fund is not an open-end investment company, it has undertaken to comply with the terms of Rule 18f-3 as a condition of an exemptive order under the 1940 Act which permits it to have, among other things, a multi-class structure and distribution and shareholder servicing fees. Under the Multi-Class Plan, shares of each class of the Fund represent an equal pro rata interest in the Fund and, generally, have identical voting, dividend, liquidation, and other rights, preferences, powers, restrictions, limitations, qualifications and terms and conditions, except that: (a) each class has a different designation; (b) each class of shares bears any class-specific expenses; and (c) each class shall have separate voting rights on any matter submitted to shareholders in which the interests of one class differ from the interests of any other class, and shall have exclusive voting rights on any matter submitted to shareholders that relates solely to that class.

Institutional Class and Class A Common Shares of the Fund are offered in this prospectus. Each share class represents an investment in the same portfolio of investments, but each class has its own expense structure and arrangements for shareholder services or distribution, which allows you to choose the class that best fits your situation and eligibility requirements.

Institutional Class Common Shares are offered for investment to investors such as pension and profit sharing plans, employee benefit trusts, endowments, foundations, corporations and individuals that can meet the minimum investment amount. Institutional Class Common Shares may also be offered through certain financial firms that charge their customers transaction or other fees with respect to their customers' investments in the Fund.

Class A Common Shares are not available for purchase directly from the Distributor and are primarily offered and sold to retail investors by broker-dealers which are members of FINRA and which have agreements with the Distributor, but may be made available through other financial firms, including banks and trust companies and to specified benefit plans (as defined below) and other retirement accounts.

Individual shareholders who hold Common Shares shares through financial intermediaries, pensions or profit sharing plans may not be eligible to hold Common Shares of the Fund outside of their respective financial intermediary platform or plan.

The Fund has adopted a Distribution and Servicing Plan for the Class A Common Shares of the Fund. The Distribution and Servicing Plan operates in a manner consistent with Rule 12b-1 under the 1940 Act, which regulates the manner in which an open-end investment company may directly or indirectly bear the expenses of distributing its shares. Although the Fund is not an open-end investment company, it has undertaken to comply with the terms of Rule 12b-1 as a condition of an exemptive order under the 1940 Act which permits it to have, among other things, a multi-class structure and distribution and shareholder servicing fees. The Distribution and Servicing Plan permits the Fund to compensate the Distributor for providing or procuring through financial firms, distribution, administrative, recordkeeping, shareholder and/or related services with respect to the Class A Common Shares. Most or all of the distribution and/or service fees are paid to financial firms through which Common Shareholders may purchase or hold Class A Common Shares. Because these fees are paid out of the Fund's Class A Common Share assets on an ongoing basis, over time they will increase the cost of an investment in Class A Common Shares and may cost you more than other types of sales charge.

The maximum annual rates at which the distribution and/or servicing fees may be paid under the Distribution and Servicing Plan (calculated as a percentage of the Fund's average daily net assets attributable to the Class A Common Shares) is 0.75%.

The Fund's Common Shares may be available through broker-dealers, banks, trust companies, insurance companies and other financial firms that have entered into shareholder servicing arrangements with respect to the Fund. A financial firm is one that, in exchange for compensation, sells, among other products, registered investment company shares (including the shares offered in this prospectus) or provides services for registered investment company shareholders.

These financial firms provide varying investment products, programs, platforms and accounts, through which investors may purchase Common Shares of the Fund. Shareholder servicing arrangements typically include processing orders for shares, generating account and confirmation statements, sub-accounting, account maintenance, tax reporting, collecting and posting distributions to investor accounts and disbursing cash dividends as well as other investment or administrative services required for the particular firm's products, programs, platform and accounts.

PIMCO and/or its affiliates may make payments to financial firms for the shareholder services provided. These payments are made out of PIMCO's or its affiliates' resources, including the management fees paid to PIMCO under the Fund's Investment Management Agreement. The actual services provided by these firms, and the payments made for such services, vary from firm to firm. The payments may be based on a fixed dollar amount for each account and position maintained by the financial firm and/or a percentage of the value of shares held by investors through the firm. Please see the Statement of Additional Information for more information.

These payments may be material to financial firms relative to other compensation paid by the Fund, PIMCO and/or its affiliates (as applicable) and may be in addition to other fees and payments, such as distribution and/or service fees, revenue sharing or "shelf space" fees and event support, other non-cash compensation and charitable contributions paid to or at the request of such firms (described below). Also, the payments may differ depending on the share class and may vary from amounts paid to the Fund's transfer agent for providing similar services to other accounts. PIMCO and/or its affiliates do not control these financial firms' provision of the services for which they are receiving payments.

These financial firms may impose additional or different conditions than the Fund on purchases of Common Shares. They may also independently establish and charge their customers or program participants transaction fees, account fees and other amounts in connection with purchases of Common Shares in addition to any fees imposed by the Fund. These additional fees may vary and over time could increase the cost of an investment in the Fund and lower investment returns. Each financial firm is responsible for transmitting to its customers and program participants a schedule of any such fees and information regarding any additional or different conditions regarding purchases. Shareholders who are customers of these financial firms or participants in programs serviced by them should contact the financial firm for information regarding these fees and conditions.

Some or all of the sales charges, distribution and servicing fees described above are paid or "reallowed" to the financial firm, including their financial advisors through which you purchase your shares.

The Distributor may from time to time make payments and provide other incentives to selected financial firms as compensation for services such as providing the Fund with "shelf space" or a higher profile for the financial firms' financial advisors and their customers, placing the Funds on the financial firms' preferred or recommended fund list, granting the Distributor access to the firms' financial advisors and furnishing marketing support and other specified services. These payments may be significant to the financial firms.

A number of factors will be considered in determining the amount of these payments to financial firms. On some occasions, such payments may be conditioned upon levels of sales, including the sale of a specified minimum dollar amount of the Common Shares of the Fund, other funds sponsored by PIMCO and/or a particular class of shares, during a specified period of time. The Distributor may also make payments to one or more financial firms based upon factors such as the amount of assets a financial firm's clients have invested in the Fund and the quality of the financial firm's relationship with the Distributor, PIMCO and/or their affiliates.

To the extent the additional payments described above are made, such additional payments would be made from the Distributor's own assets (and sometimes, therefore referred to as "revenue sharing") pursuant to agreements with broker-dealers or other financial firms and would not change the price paid by investors for the purchase of the Fund's shares or the amount the Fund will receive as proceeds from such sales. These payments may be made to financial firms (as selected by the Distributor) that have sold significant amounts of shares of the Fund.

The Distributor or its employees and representatives may make payments or reimburse financial firms for sponsorship and/or attendance at conferences, seminars or informational meetings ("event support"), provide financial firms or their personnel with occasional tickets to events or other entertainment, meals, and small gifts ("other non-cash compensation"), make charitable contributions to valid charitable organizations at the request of financial firms ("charitable contributions") and make financial contributions pertaining to sales incentives and contests, each to the extent permitted by applicable law, rules and regulations.

Payments for marketing support may also include payments to financial firms in connection with the marketing and sale of model portfolios developed by PIMCO. Such payments may relate to assets under management or sales of any share class of the Funds in such PIMCO-developed models. In addition, wholesaler representatives of the Distributor visit financial firms on a regular basis to market and educate financial advisors and other personnel about the Fund. These payments, reimbursements and activities may provide additional access to financial advisors at these financial firms, which may increase purchases and/or reduce redemptions of Fund shares.

The Distributor also may pay financial firms for certain services including technology, operations, tax, or audit consulting services, and may pay such firms for the Distributor's attendance at investment forums sponsored by

such firms or for various studies, surveys, or access to databases. Subject to applicable law, PIMCO and its affiliates may also provide investment advisory services to financial firms and may execute brokerage transactions on behalf of the Fund with such financial firms. These financial firms may, in the ordinary course of their business, recommend that their clients utilize PIMCO's investment advisory services or invest in the Fund or in other products sponsored or distributed by the Distributor.

If investment advisers, distributors or affiliates of mutual funds make payments and provide other incentives in differing amounts, financial firms and their financial advisors may have financial incentives for recommending a particular fund over other funds. In addition, depending on the arrangements in place at any particular time, a financial firm and its financial advisors may also have a financial incentive for recommending a particular share class over other share classes, to the extent applicable. A shareholder who holds Fund Common Shares through a financial firm should consult with the shareholder's financial advisor and review carefully any disclosure by the financial firm as to its compensation received by the financial advisor.

Although the Fund may use financial firms that sell Fund Common Shares to effect transactions for the Fund's portfolio, the Fund and PIMCO will not consider the sale of Fund Common Shares as a factor when choosing financial firms to effect those transactions.

For further details about payments made by the Distributor to financial firms, please see the Statement of Additional Information.

The following section provides basic information about how to purchase Common Shares of the Fund.

The Fund typically does not offer or sell its shares to non-U.S. residents. For purposes of this policy, a U.S. resident is defined as an account with (i) a U.S. address of record and (ii) all account owners residing in the U.S. at the time of sale.

Individual shareholders who purchase Common Shares through financial intermediaries, pensions or profit sharing plans may not be eligible to hold Common Shares outside of their respective plan or financial intermediary platform.

Eligible investors may purchase Institutional Class and Class A Common Shares in the following ways:

Through your broker-dealer or other financial firm. Class A Common Shares are not available for purchase directly from the Distributor and are primarily offered and sold to retail investors by certain broker-dealers which are members of the Financial Industry Regulatory Authority ("FINRA") and which have agreements with the Fund's distributor, but may be made available through other financial firms, including banks and trust companies and to specified benefit plans and other retirement accounts. Your broker-dealer or other financial firm may establish different minimum investment requirements than the Fund and may also independently charge you transaction fees and additional amounts (which may vary) in return for its services, which will reduce your return. Shares you purchase through your broker-dealer or other financial firm will normally be held in your account with that firm and instructions for buying, selling, exchanging or transferring Class A Common Shares must be submitted by your broker-dealer or other financial firm on your behalf.

Eligible investors may purchase Institutional Class Common Shares in the following ways

Through your broker-dealer or other financial firm. Institutional Class Common Shares may be offered through certain financial firms that charge their customers transaction or other fees with respect to their customers' investments in the Fund. Your broker-dealer or other financial firm may establish different minimum investment requirements than the Fund and may also independently charge you transaction fees and additional amounts (which may vary) in return for its services, which will reduce your return. Shares you purchase through your broker-dealer or other financial firm will normally be held in your account with that firm. If you purchase shares through a broker-dealer or other financial firm, instructions for buying, selling, exchanging or transferring Institutional Class Common Shares must be submitted by your financial firm or broker-dealer on your behalf.

Through the Distributor. You should discuss your investment with your financial advisor before you make a purchase to be sure the Fund is appropriate for you. Individual investors who meet the minimum investment amount and wish to invest direct in Institutional Class Common Shares may obtain an Account Application online at pimco.com or by calling 844.312.2113. If you do not list a financial advisor and his/her brokerage firm on the Account Application, the Distributor is designated as the broker of record, but solely for purposes of acting as your agent to purchase shares.

Overnight Mail:
PIMCO Interval Funds
C/O DST Systems, Inc.
430 W. 7th Street
Suite 219993
Kansas City, MO 64105-1407

Payment for the purchase of Common Shares may be made by check payable to the PIMCO Interval Funds and sent to the Regular Mail address above; or by wiring federal funds to:

PIMCO Interval Funds
United Missouri Bank
928 Grand Blvd.
Kansas City, MO 64106
ABA: 101000695
DDA: 98-7229-174-3
ACCT: Your PIMCO Account Number
FFC: Shareholder Name and Fund Identifier

Before wiring federal funds, the investor must provide order instructions to the transfer agent by facsimile at 844.643.0432 or by e-mail at pimcoaltprocessing@dstsystems.com. In order to receive the current day's NAV, order instructions must be received in good order prior to the close of regular trading on the New York Stock Exchange ("NYSE") (ordinarily 4:00 p.m., Eastern time) ("NYSE Close"). Instructions must include the name and signature of an appropriate person designated on the Account Application ("Authorized Person"), account name, account number, name of the Fund and dollar amount. Failure to send the accompanying payment on the same day may result in the cancellation of the order. Payments received without order instructions could result in a processing delay or a return of wire.

An investor may place a purchase order for Common Shares without first wiring federal funds if the purchase amount is to be derived from an advisory account managed by PIMCO or one of its affiliates, or from an account with a broker-dealer or other financial firm that has established a processing relationship with the Fund on behalf of its customers.

Institutional Class Common Shares. The following investment minimums apply for purchases of Institutional Class Common Shares:

Class A Common Shares. The following investment minimums apply for purchases of Class A Common Shares:

The initial investment minimums may be modified for certain financial firms that submit orders on behalf of their customers. The Fund or the Distributors may lower or waive the minimum initial investment for certain classes of shares or categories of investors at their discretion. The minimum initial investment may also be modified for the Trustees and certain employees and their extended family members of PIMCO and its affiliates. For these purposes, "extended family members" shall include such person's spouse or domestic partner, as recognized by applicable state law, children, siblings, current brother/sister-in-laws, parents, and current father/mother-in-laws. Please see the Statement of Additional Information for details.

Additional Investments. An investor may purchase additional Institutional Common Shares of the Fund at any time by sending a facsimile or e-mail as outlined above. If you invest in Institutional Class Common Shares or Class A Common Shares through a broker-dealer, contact your financial firm for information on purchasing additional Common Shares.

Other Purchase Information. Purchases of a Fund's Common Shares will be made in full and fractional shares.

The Fund and the Distributor each reserves the right, in its sole discretion, to suspend the offering of shares of the Fund or to reject any purchase order, in whole or in part, when, in the judgment of management, such suspension or rejection is in the best interests of the Fund.

In the interest of economy and convenience, certificates for shares will not be issued.

This section includes important information about sales charge reduction programs available to investors in Class A Common Shares of the Fund and describes information or records you may need to provide to the Distributor or your financial firm in order to be eligible for sales charge reduction programs.

Unless you are eligible for a waiver, the public offering price you pay when you buy Class A Common Shares of the Fund is the NAV of the shares plus an initial sales charge. The initial sales charge varies depending upon the size of your purchase, as set forth below. No sales charge is imposed where Class A Common Shares are issued to you pursuant to the automatic reinvestment of income dividends or capital gains distributions. For investors investing in Class A Common Shares of the Fund through a financial intermediary, it is the responsibility of the financial intermediary to ensure that you obtain the proper "breakpoint" discount.

Because the offering price is calculated to two decimal places, the dollar amount of the sales charge as a percentage of the offering price and your net amount invested for any particular purchase of Fund shares may be higher or lower depending on whether downward or upward rounding was required during the calculation process.

Investors in the Fund may reduce or eliminate sales charges applicable to purchases of Class A shares through utilization of the Combined Purchase Privilege, Right of Accumulation (Cumulative Quantity Discount), Letter of Intent or Reinstatement Privilege. These programs will apply to purchases of other closed-end interval funds that PIMCO may sponsor (collectively, "Eligible Funds"), which offer Class A Common Shares. These programs are summarized below and described in the Statement of Additional Information. Eligible Funds do not include any open-end funds sponsored by PIMCO.

Combined Purchase Privilege and Right of Accumulation (Breakpoints). A Qualifying Investor (as defined below) may qualify for a reduced sales charge on Class A Common Shares at the breakpoint levels disclosed herein by combining concurrent purchases of the Class A and/or Class A-2 Common Shares of one or more Eligible Funds into a single purchase (the "Combined Purchase Privilege"). In addition, a Qualifying Investor may obtain a reduced sales charge on Class A Common Shares of the Fund by adding the purchase value of Class A and/or Class A-2 shares of an Eligible Fund with the current aggregate net asset value of all Class A and/or Class A-2 Common Shares of any Eligible Fund held by accounts for the benefit of such Qualifying Investor (the "Right of Accumulation" or "Cumulative Quantity Discount").

an individual, such individual's spouse or domestic partner, as recognized by applicable state law, or such individual's children under the age of 21 years (each a "family member") (including family trust* accounts established by such a family member); or

a trustee or other fiduciary for a single trust (except family trusts* noted above), estate or fiduciary account although more than one beneficiary may be involved; or

* For these purposes, a "family trust" is one in which a family member, as defined in section (1) above, or a direct lineal descendant(s) of such person is/are the beneficiary(ies), and such person or another family member, direct lineal ancestor or sibling of such person is/are the trustee(s).

Letter of Intent. Investors may also obtain a reduced sales charge on purchases of Class A shares by means of a written Letter of Intent which expresses an intent to invest not less than $250,000 within a period of 13 months in Class A Common Shares of any Eligible Fund(s). The maximum intended investment allowable in a Letter of Intent is $1,000,000. Each purchase of shares under a Letter of Intent will be made at the public offering price or prices applicable at the time of such purchase to a single purchase of the dollar amount indicated in the Letter of Intent. The value of the investor's account(s) linked to a Letter of Intent will be included at the start date of the Letter of Intent. A Letter of Intent is not a binding obligation to purchase the full amount indicated. Shares purchased with the first 5% of the amount indicated in the Letter of Intent will be held in escrow (while remaining registered in your name) to secure payment of the higher sales charges applicable to the shares actually purchased in the event the full intended amount is not purchased. If the full amount indicated is not purchased, a sufficient amount of such escrowed shares will be involuntarily redeemed to pay the additional sales charge applicable to the amount actually purchased, if necessary. Dividends on escrowed shares, whether paid in cash or reinvested in additional Eligible Fund shares, are not subject to escrow. When the full amount indicated has been purchased, the escrow will be released. Redemptions during the LOI period will not count against the shareholder.

In making computations concerning the amount purchased for purposes of a Letter of Intent, market appreciation in the value of the shareholder's Class A and/or Class A-2 Common Shares of Eligible Funds will not be included.

Method of Valuation of Accounts. To determine whether a shareholder qualifies for a reduction in sales charge on a purchase of Class A and/or Class A-2 Common Shares of Eligible Funds, the public offering price of the shares is used for purchases relying on the Combined Purchase Privilege or a Letter of Intent and the amount of the total current purchase (including any sales load) plus the NAV (at the close of business on the day of the current purchase) of shares previously acquired is used for the Right of Accumulation (Cumulative Quantity Discount).

Reinstatement Privilege. A Class A shareholder who has caused any or all of his shares to be repurchased may reinvest all or any portion of the repurchase proceeds in Class A and/or Class A-2 Common Shares of any Eligible Fund at NAV without any sales charge, provided that such investment is made within 120 calendar days after the repurchase date. The limitations and restrictions of this program are fully described in the Statement of Additional Information.

Sales at Net Asset Value. In addition to the programs summarized above, the Fund may sell its Class A Common Shares at NAV without an initial sales charge to certain types of accounts or account holders, including: Trustees of the Funds; employees of PIMCO and the Distributor; employees of participating brokers; certain trustees or other fiduciaries purchasing shares for retirement plans; and persons investing through certain "wrap accounts." Please see the Statement of Additional Information for details.

Exchanges. Exchanges of Institutional Class Common Shares for Class A Common Shares at the direction of a financial intermediary (as described under "Exchanging Shares" below) will not be subject to a sales charge.

If you are eligible to buy both Class A shares and Institutional Class shares, you should buy Institutional Class shares because Class A shares may be subject to sales charges and an annual 0.75% distribution and/or service fee.

The initial sales charges on Class A Common Shares may be reduced or waived under certain purchase arrangements and for certain categories of investors.

Required Shareholder Information and Records. In order for investors in Class A Common Shares of the Fund to take advantage of sales charge reductions, an investor or his or her financial firm must notify the Fund that the investor qualifies for such a reduction. If the Fund is not notified that the investor is eligible for these reductions, the Fund will be unable to ensure that the reduction is applied to the investor's account. An investor may have to provide certain information or records to his or her financial firm or the Fund to verify the investor's eligibility for breakpoint discounts or sales charge waivers.

An investor may be asked to provide information or records, including account statements, regarding shares of the Fund or other Eligible Funds held in:

all of the investor's accounts held directly with the Fund or through a financial firm;

The Statement of Additional Information provides additional information regarding eliminations of and reductions in sales loads associated with Eligible Funds. You can obtain the Statement of Information free of charge from PIMCO by written request, by visiting pimco.com by calling 844.312.2113.

Exchanges Across Eligible Funds: Subject to the terms and conditions below, investors may move their investment in common shares of certain other Eligible Funds into Common Shares of the Fund. Investors may also move their investment in Common Shares of the Fund into common shares of other Eligible Funds in conjunction with quarterly repurchases made by the Fund. In this case, rather than tendering shares for cash, the investor would elect to have the dollar value of those Common Shares accepted for purchases of shares of the other Eligible Funds.

The total value of shares being exchanged into the Fund must at least equal the minimum investment requirement applicable to the class of Common Shares of the Fund that are being acquired, and the total value of shares being exchanged out of the Fund into other Eligible Funds must meet the minimum investment requirements of those Eligible Funds, as applicable. Shares of the Fund or other Eligible Fund that are acquired through such exchanges will be subject to any sales charges and/or waivers applicable to the class of shares that are acquired.

Intra-Fund Exchanges: Shares of one class of the Fund may be exchanged, at a shareholder's option, directly for shares of another class of the Fund (an "intra-fund exchange"), subject to the terms and conditions described below and provided that the shareholder for whom the intra-fund exchange is being requested meets the eligibility requirements of the class into which such shareholder seeks to exchange. Additional information regarding the eligibility requirements of different share classes, including investment minimums and intended distribution channels is described under "Purchasing Shares" and "Investment Minimums" above.

Shares of one class of the Fund will be exchanged for shares of a different class of the Fund on the basis of their respective NAVs. Ongoing fees and expenses incurred by a given share class will differ from those of other share classes, and a shareholder receiving new shares in an intra-fund exchange may be subject to higher or lower total expenses following such exchange.

In addition, financial intermediaries may, in connection with a change in a client's account type, at the direction of a client, or otherwise in accordance with a financial intermediary's policies and procedures, direct the Fund on behalf of the intermediary's clients to exchange Institutional Class Common Shares for Class A Common Shares of the Fund. Exchanges of Institutional Class Common Shares for Class A Common Shares will not be subject to a sales charge. Class A Common Shares are, however, subject to higher annual operating expenses than Institutional Class Common Shares. See "Summary of Fund Expenses." The Fund will only exchange Institutional Class Shares for Class A Common Shares at the direction of a financial intermediary and without making inquiry as to whether the exchange is consistent with the particular intermediary's policies and procedures or the client's account type and/or suitability criteria. An investor should contact his or her financial intermediary to learn more about the details of this exchange feature and whether and under what circumstances it may apply in accordance with the investor's arrangements with the particular intermediary.

The availability of sales charge waivers and discounts may depend on the particular financial intermediary or type of account through which you purchase or hold Fund shares. The Fund's sales charge waivers and discounts disclosed in this prospectus are available for qualifying purchases made directly from the Distributor and are generally available through financial firms unless otherwise specified in Appendix B.

The sales charge waivers, discounts and/or breakpoints available through certain other financial intermediaries are set forth in Appendix B to this prospectus (Financial Firm-Specific Sales Charge Waivers and Discounts), which may differ from those available for purchases made directly from the Distributor or certain other financial firms. Please contact your financial firm for more information regarding applicable sales charge waivers and discounts available to you and the financial firm's related policies and procedures.

When a signature validation is called for, a Medallion signature guarantee or Signature validation program ("SVP") stamp may be required. A Medallion signature guarantee is intended to provide signature validation for transactions considered financial in nature, and an SVP stamp is intended to provide signature validation for transactions non-financial in nature. In certain situations, a notarized signature may be used instead of a

Medallion signature guarantee or an SVP stamp. A Medallion signature guarantee or SVP stamp may be obtained from a domestic bank or trust company, broker, dealer, clearing agency, savings association or other financial institution which is participating in a Medallion program or Signature validation program recognized by the Securities Transfer Association. When a Medallion signature guarantee or SVP stamp is required, signature validations from financial institutions which are not participating in one of these programs will not be accepted. Please note that financial institutions participating in a recognized Medallion program may still be ineligible to provide a signature validation for transactions of greater than a specified dollar amount. The Fund may change the signature validation requirements from time to time upon notice to shareholders, which may be given by means of a new or supplemented prospectus. Shareholders should contact the Fund for additional details regarding the Fund's signature validation requirements.

In addition, corporations, trusts, and other institutional organizations are required to furnish evidence of the authority of the persons designated on the Account Application to effect transactions for the organization.

To reduce expenses, it is intended that only one copy of the Fund's prospectus and each annual and semi-annual report, when available, will be mailed to those addresses shared by two or more accounts. If you wish to receive individual copies of these documents and your shares are held directly with the Fund, call the Fund at 844.312.2113. You will receive the additional copy within 30 days after receipt of your request by the Fund. Alternatively, if your shares are held through a financial institution, please contact the financial institution directly.

A purchase order received by the Fund or its designee prior to the NYSE Close, on a day the Fund is open for business, together with payment made in one of the ways described above will be effected at that day's NAV plus any applicable sales charge. An order received after the NYSE Close will be effected at the NAV determined on the next business day. However, orders received by certain retirement plans and other financial firms on a business day prior to the NYSE Close and communicated to the Fund or its designee prior to such time as agreed upon by the Fund and financial firm will be effected at the NAV determined on the business day the order was received by the financial firm. The Fund is "open for business" on each day the NYSE is open for trading, which excludes the following holidays: New Year's Day, Martin Luther King, Jr. Day, Presidents' Day, Good Friday, Memorial Day, Independence Day, Labor Day, Thanksgiving Day and Christmas Day. If the NYSE is closed due to weather or other extenuating circumstances on a day it would typically be open for business, the Fund reserves the right to treat such day as a Business Day and accept purchase orders in accordance with applicable law. The Fund reserves the right to close if the primary trading markets of the Fund's portfolio instruments are closed and the Fund's management believes that there is not an adequate market to meet purchase requests. On any business day when the Securities Industry and Financial Markets Association ("SIFMA") recommends that the securities markets close trading early, the Fund may close trading early. Purchase orders will be accepted only on days which the Fund is open for business.

The Fund and the Distributor each reserves the right, in its sole discretion, to accept or reject any order for purchase of Fund Common Shares. The sale of Common Shares may be suspended during any period in which the NYSE is closed other than weekends or holidays, or if permitted by the rules of the SEC, when trading on the NYSE is restricted or during an emergency which makes it impracticable for the Fund to dispose of its securities or to determine fairly the value of its net assets, or during any other period as permitted by the SEC for the protection of investors.

To help the federal government combat the funding of terrorism and money laundering activities, federal law requires all financial institutions to obtain, verify and record information that identifies each person that opens a new account, and to determine whether such person's name appears on government lists of known or suspected terrorists and terrorist organizations. As a result, the Fund must obtain the following information for each person that opens a new account:

Social security number, taxpayer identification number, or other identifying number.

Federal law prohibits the Fund and other financial institutions from opening a new account unless they receive the minimum identifying information listed above.

Individuals may also be asked for a copy of their driver's license, passport or other identifying document in order to verify their identity. In addition, it may be necessary to verify an individual's identity by cross-referencing the identification information with a consumer report or other electronic database. Additional information may be required to open accounts for corporations and other entities.

After an account is opened, the Fund may restrict your ability to purchase additional Common Shares until your identity is verified. The Fund also may close your account and redeem your shares or take other appropriate action if it is unable to verify your identity within a reasonable time.

The Fund is a closed-end interval fund and, to provide liquidity and the ability to receive NAV on a disposition of at least a portion of your Common Shares, makes periodic offers to repurchase Common Shares. No shareholder will have the right to require the Fund to repurchase its Common Shares, except as permitted by the Fund's interval structure. No public market for the Common Shares exists, and none is expected to develop in the future. Consequently, shareholders generally will not be able to liquidate their investment other than as a result of repurchases of their Common Shares by the Fund, and then only on a limited basis.

The Fund has adopted, pursuant to Rule 23c-3 under the 1940 Act, a fundamental policy, which cannot be changed without shareholder approval, requiring the Fund to offer to repurchase at least 5% and up to 25% of its Common Shares at NAV on a regular schedule. Although the policy permits repurchases of between 5% and 25% of the Fund's outstanding Common Shares, for each quarterly repurchase offer, the Fund currently expects to offer to repurchase 5% of the Fund's outstanding Common Shares at NAV subject to approval of the Board. The schedule requires the Fund to make repurchase offers every three months.

The Fund will make quarterly repurchase offers every three months. As discussed below, the date on which the repurchase price for Common Shares is determined will occur no later than the 14th day after the Repurchase Request Deadline (or the next business day, if the 14th day is not a business day).

The date by which shareholders wishing to tender Common Shares for repurchase must respond to the repurchase offer will be no more than fourteen days before the Repurchase Pricing Date (defined below). When a repurchase offer commences, the Fund sends, at least 21 days before the Repurchase Request Deadline, written notice to each shareholder setting forth, among other things:

The percentage of outstanding Common Shares that the Fund is offering to repurchase and how the Fund will purchase Common Shares on a pro rata basis if the offer is oversubscribed.

The date that will be used to determine the Fund's NAV applicable to the repurchase offer (the "Repurchase Pricing Date").

The date by which the Fund will pay to shareholders the proceeds from their Common Shares accepted for repurchase.

The NAV of the Common Shares as of a date no more than seven days before the date of the written notice and the means by which shareholders may ascertain the NAV.

The procedures by which shareholders may tender their Common Shares and the right of shareholders to withdraw or modify their tenders before the Repurchase Request Deadline.

The circumstances in which the Fund may suspend or postpone the repurchase offer.

This notice may be included in a shareholder report or other Fund document. The Repurchase Request Deadline will be strictly observed. If a shareholder fails to submit a repurchase request in good order by the Repurchase Request Deadline, the shareholder will be unable to liquidate Common Shares until a subsequent repurchase offer, and will have to resubmit a request in the next repurchase offer. Shareholders may withdraw or change a repurchase request with a proper instruction submitted in good form at any point before the Repurchase Request Deadline.

The Repurchase Pricing Date will occur no later than the 14th day after the Repurchase Request Deadline (or the next business day, if the 14th day is not a business day). The Fund expects to distribute payment to shareholders between one and three (3) business days after the Repurchase Pricing Date and will distribute such payment no later than seven (7) calendar days after such date. The Fund's NAV per share may change materially between the date a repurchase offer is mailed and the Repurchase Request Deadline, and it may also change materially between the Repurchase Request Deadline and Repurchase Pricing Date. The method by which the Fund calculates NAV is discussed below under "Net Asset Value." During the period an offer to repurchase is open, shareholders may obtain the current NAV by visiting www.pimco.com or calling the Fund's transfer agent at (844) 312-2113.

Your financial adviser or other financial intermediary may charge service fees for handling Common Share repurchases. In such cases, there may be fees imposed by the intermediary on different terms (and subject to different exceptions) than those set forth above. Please consult your financial adviser or other financial intermediary for details.

The Fund may suspend or postpone a repurchase offer in limited circumstances set forth in Rule 23c-3 under the 1940 Act, as described below, but only with the approval of a majority of the Trustees, including a majority of Trustees who are not "interested persons" of the Fund, as defined in the 1940 Act. The Fund may suspend or postpone a repurchase offer only: (1) if making or effecting the repurchase offer would cause the Fund to lose its status as a regulated investment company under Subchapter M of the Internal Revenue Code; (2) for any period during which the NYSE or any other market in which the securities owned by the Fund are principally traded is closed, other than customary weekend and holiday closings, or during which trading in such market is restricted; (3) for any period during which an emergency exists as a result of which disposal by the Fund of securities owned by it is not reasonably practicable, or during which it is not reasonably practicable for the Fund fairly to determine the value of its net assets; or (4) for such other periods as the SEC may by order permit for the protection of shareholders of the Fund.

There is no minimum number of Common Shares that must be tendered before the Fund will honor repurchase requests. However, the Fund's Trustees set for each repurchase offer a maximum percentage of Common Shares that may be repurchased by the Fund, which is currently expected to be 5% of the Fund's outstanding Common Shares. In the event a repurchase offer by the Fund is oversubscribed, the Fund may repurchase, but is not required to repurchase, additional Common Shares up to a maximum amount of 2% of the outstanding Common Shares of the Fund. If the Fund determines not to repurchase additional Common Shares beyond the repurchase offer amount, or if shareholders tender an amount of Common Shares greater than that which the Fund is entitled to repurchase, the Fund will repurchase the Common Shares tendered on a pro rata basis.

If any Common Shares that you wish to tender to the Fund are not repurchased because of proration, you will have to wait until the next repurchase offer and resubmit a new repurchase request, and your repurchase request will not be given any priority over other shareholders' requests. Thus, there is a risk that the Fund may not purchase all of the Common Shares you wish to have repurchased in a given repurchase offer or in any subsequent repurchase offer. In anticipation of the possibility of proration, some shareholders may tender more Common Shares than they wish to have repurchased in a particular quarter, increasing the likelihood of proration.

There is no assurance that you will be able to tender your Common Shares when or in the amount that you desire.

From the time the Fund distributes or publishes each repurchase offer notification until the Repurchase Pricing Date for that offer, the Fund must maintain liquid assets at least equal to the percentage of its Common Shares subject to the repurchase offer. For this purpose, "liquid assets" means assets that may be sold or otherwise disposed of in the ordinary course of business, at approximately the price at which the Fund values them, within the period between the Repurchase Request Deadline and the repurchase payment deadline, or which mature by the repurchase payment deadline. The Fund is also permitted to borrow up to the maximum extent permitted under the 1940 Act to meet repurchase requests.

If the Fund borrows to finance repurchases, interest on that borrowing will negatively affect shareholders who do not tender their Common Shares by increasing the Fund's expenses and reducing any net investment income. There is no assurance that the Fund will be able sell a significant amount of additional Common Shares so as to mitigate these effects.

These and other possible risks associated with the Fund's repurchase offers are described under "Principal Risks of Investment in the Fund — Repurchase Offers Risk" above. In addition, the repurchase of Common Shares by the Fund will be a taxable event to shareholders, potentially even to those shareholders that do not participate in the repurchase. For a discussion of these tax consequences, see "Tax Matters" below and in the Statement of Additional Information.

The NAV of the Fund's Common Shares is determined by dividing the total value of the Fund's portfolio investments and other assets, less any liabilities, by the total number of shares outstanding.

On each day that the NYSE is open, the Fund's Common Shares are ordinarily valued as of the NYSE Close. Information that becomes known to the Fund or its agents after the time as of which NAV has been calculated on a particular day will not generally be used to retroactively adjust the price of a security or the NAV determined earlier that day. The Fund reserves the right to change the time as of which its respective NAV is calculated if the Fund closes earlier, or as permitted by the SEC.

For purposes of calculating NAV, portfolio securities and other assets for which market quotes are readily available are valued at market value. Market value is generally determined on the basis of official closing prices or the last reported sales prices, or if no sales are reported, based on quotes obtained from established market makers or prices (including evaluated prices) supplied by the Fund's approved pricing services, quotation reporting systems and other third-party sources (together, "Pricing Services"). The Fund will normally use pricing data for domestic equity securities received shortly after the NYSE Close and does not normally take into account trading, clearances or settlements that take place after the NYSE Close. A foreign (non-U.S.) equity security traded on a foreign exchange or on more than one exchange is typically valued using pricing information from the exchange considered by PIMCO to be the primary exchange. If market value pricing is used, a foreign (non-U.S.) equity security will be valued as of the close of trading on the foreign exchange, or the NYSE Close, if the NYSE Close occurs before the end of trading on the foreign exchange. Domestic and foreign (non-U.S.) fixed income securities, non-exchange traded derivatives, and equity options are normally valued on the basis of quotes obtained from brokers and dealers or Pricing Services using data reflecting the earlier closing of the principal markets for those securities. Prices obtained from Pricing Services may be based on, among other things, information provided by market makers or estimates of market values obtained from yield data relating to investments or securities with similar characteristics. Certain fixed income securities purchased on a delayed-delivery basis are marked to market daily until settlement at the forward settlement date. Exchange-traded options, except equity options, futures and options on futures are valued at the settlement price determined by the relevant exchange. Swap agreements are valued on the basis of bid quotes obtained from brokers and dealers or market-based prices supplied by Pricing Services or other pricing sources. With respect to any portion of the Fund's assets that are invested in one or more open-end management investment companies (other than ETFs), the Fund's NAV will be calculated based upon the NAVs of such investments.

If a foreign (non-U.S.) equity security's value has materially changed after the close of the security's primary exchange or principal market but before the NYSE Close, the security may be valued at fair value based on procedures established and approved by the Board. Foreign (non-U.S.) equity securities that do not trade when the NYSE is open are also valued at fair value. With respect to foreign (non-U.S.) equity securities, the Fund may determine the fair value of investments based on information provided by Pricing Services and other third-party vendors, which may recommend fair

value or adjustments with reference to other securities, indexes or assets. In considering whether fair valuation is required and in determining fair values, the Fund may, among other things, consider significant events (which may be considered to include changes in the value of U.S. securities or securities indexes) that occur after the close of the relevant market and before the NYSE Close. The Fund may utilize modeling tools provided by third-party vendors to determine fair values of non-U.S. securities. For these purposes, any movement in the applicable reference index or instrument ("zero trigger") between the earlier close of the applicable foreign market and the NYSE Close may be deemed to be a significant event, prompting the application of the pricing model (effectively resulting in daily fair valuations.) Foreign (non-U.S.) exchanges may permit trading in foreign (non-U.S.) equity securities on days when the Fund is not open for business, which may result in the Fund's portfolio investments being affected when shareholders are unable to buy or sell shares.

Senior secured floating rate loans for which an active secondary market exists to a reliable degree will be valued at the mean of the last available bid/ask prices in the market for such loans, as provided by a Pricing Service. Senior secured floating rate loans for which an active secondary market does not exist to a reliable degree will be valued at fair value, which is intended to approximate market value. In valuing a senior secured floating rate loan at fair value, the factors considered may include, but are not limited to, the following: (a) the creditworthiness of the borrower and any intermediate participants, (b) the terms of the loan, (c) recent prices in the market for similar loans, if any, and (d) recent prices in the market for instruments of similar quality, rate, period until next interest rate reset and maturity.

Investments valued in currencies other than the U.S. dollar are converted to the U.S. dollar using exchange rates obtained from Pricing Services. As a result, the value of such investments and, in turn, the NAV of the Fund's shares may be affected by changes in the value of currencies in relation to the U.S. dollar. The value of investments traded in markets outside the United States or denominated in currencies other than the U.S. dollar may be affected significantly on a day that the Fund is not open for business. As a result, to the extent that the Fund holds foreign (non-U.S.) investments, the value of those investments may change at times when shareholders are unable to buy or sell shares and the value of such investments will be reflected in the Fund's next calculated NAV.

Investments for which market quotes or market-based valuations are not readily available are valued at fair value as determined in good faith by the Board or persons acting at their direction. The Board has adopted methods for valuing securities and other assets in circumstances where market quotes are not readily available, and has delegated to PIMCO the responsibility for applying the fair valuation methods. In the event that market quotes or market-based valuations are not readily available, and the security or asset cannot be valued pursuant to a Board approved valuation method, the value of the security or asset will be determined in good faith by the Valuation Oversight Committee of the Board ("Valuation Oversight Committee"), generally based on recommendations provided by PIMCO. Market quotes are considered not readily available in circumstances where there is an absence of current or reliable market-based data (e.g., trade information, bid/ask information, indicative market quotations ("Broker Quotes"), Pricing Services' prices), including where events occur after the close of the relevant market, but prior to the NYSE Close, that materially affect the values of the Fund's securities or assets. In addition, market quotes are considered not readily available when, due to extraordinary circumstances, the exchanges or markets on which the securities trade do not open for trading for the entire day and no other market prices are available. The Board has delegated to PIMCO the responsibility for monitoring significant events that may materially affect the values of the Fund's securities or assets and for determining whether the value of the applicable securities or assets should be reevaluated in light of such significant events.

When the Fund uses fair valuation to determine the value of a portfolio security or other asset for purposes of calculating its NAV, such investments will not be priced on the basis of quotes from the primary market in which they are traded, but rather may be priced by another method that the Board or persons acting at their direction believe reflects fair value. Fair valuation may require subjective determinations about the value of a security. While the Fund's policy is intended to result in a calculation of the Fund's NAV that fairly reflects security values as of the time of pricing, the Fund cannot ensure that fair values determined by the Board or persons acting at their direction would accurately reflect the price that the Fund could obtain for a security if it were to dispose of that security as of the time of pricing (for instance, in a forced or distressed sale). The prices used by the Fund may differ from the value that would be realized if the securities were sold.

Under certain circumstances, the per share NAV of a class of the Fund's shares may be different from the per share NAV of another class of shares as a result of the different daily expense accruals applicable to each class of shares.

The Fund intends to declare income dividends daily and distribute them to Common Shareholders quarterly at rates that reflect the past and projected net income of the Fund. Subject to applicable law, the Fund may fund a portion of its distributions with gains from the sale of portfolio securities and other sources. The dividend rate that the Fund pays on its Common Shares may vary as portfolio and market conditions change, and will depend on a number of factors, including without limitation the amount of the Fund's undistributed net investment income and net short- and long-term capital gains, as well as the costs of any leverage obtained by the Fund (including interest expenses on any reverse repurchase agreements, dollar rolls and borrowings and dividends payable on any preferred shares issued by the Fund). As portfolio and market conditions change, the rate of distributions on the Common Shares and the Fund's dividend policy could change. For a discussion of factors that may cause the Fund's income and capital gains (and therefore the dividend) to vary, see "Principal Risks of the Fund." The Fund intends to distribute each year all of its net investment income and net short-term capital gains. In addition, at least annually, the Fund intends to distribute net realized long-term capital gains not previously distributed, if any. The net investment income of the Fund consists of all income (other than net short-term and long-term capital gains) less all expenses of the Fund (after it pays accrued dividends on any outstanding preferred shares). To permit the Fund to maintain more stable

distributions, the Fund's distribution rates will be based, in part, on projections as to annual cash available for distribution and, therefore, the distributions paid by the Fund for any particular quarter may be more or less than the amount of cash available to the Fund for distribution for that quarterly period.

The Fund may distribute less than the entire amount of net investment income earned in a particular period. The undistributed net investment income would be available to supplement future distributions. As a result, the distributions paid by the Fund for any particular quarterly period may be more or less than the amount of net investment income actually earned by the Fund during the period. Undistributed net investment income will be added to the Fund's NAV and, correspondingly, distributions from undistributed net investment income will be deducted from the Fund's NAV.

The tax treatment and characterization of the Fund's distributions may vary significantly from time to time because of the varied nature of the Fund's investments. If the Fund estimates that a portion of one of its dividend distributions may be comprised of amounts from sources other than net investment income in accordance with its policies and good accounting practices, the Fund will notify shareholders of record of the estimated composition of such distribution through a Section 19 Notice. To determine the sources of a Fund's distributions during the reporting period, the Fund references its internal accounting records at the time the distribution is paid and generally bases its projections of the final tax character of those distributions on the tax characteristics of the distribution reflected in its internal accounting records at the time of such payment. If, based on such records, a particular distribution does not include capital gains or paid-in surplus or other capital sources, a Section 19 Notice generally would not be issued. It is important to note that differences exist between a Fund's daily internal accounting records, the Fund's financial statements presented in accordance with U.S. GAAP, and recordkeeping practices under income tax regulations. Examples of such differences may include, among others, the treatment of paydowns on mortgage-backed securities purchased at a discount and periodic payments under interest rate swap contracts. Notwithstanding the Fund's estimates and projections, it is possible that the Fund may not issue a Section 19 Notice in situations where the Fund's financial statements prepared later and in accordance with U.S. GAAP or the final tax character of those distributions might later report that the sources of those distributions included capital gains and/or a return of capital. Additionally, given differences in tax and U.S. GAAP treatment of certain distributions, the Fund may not issue a Section 19 Notice in situations where the Fund's financial statements prepared later and in accordance with U.S. GAAP might report that the sources of these distributions included capital gains and/or a return of capital.

The tax characterization of the Fund's distributions made in a taxable year cannot finally be determined until at or after the end of the year. As a result, there is a possibility that the Fund may make total distributions during a taxable year in an amount that exceeds the Fund's net investment income and net realized capital gains (as reduced by any capital loss carry-forwards) for the relevant year. For example, the Fund may distribute amounts early in the year that are derived from short-term capital gains, but incur net short-term capital losses later in the year, thereby offsetting short-term capital gains out of which distributions have already been made by the Fund. In such a situation, the amount by which the Fund's total distributions exceed net investment income and net realized capital gains would generally be treated as a tax-free return of capital up to the amount of a shareholder's tax basis in his or her Common Shares, with any amounts exceeding such basis treated as gain from the sale of Common Shares. In general terms, a return of capital would occur where a Fund distribution (or portion thereof) represents a return of a portion of your investment, rather than net income or capital gains generated from your investment during a particular period. A return of capital distribution is not taxable, but it reduces a shareholder's tax basis in the Common Shares, thus reducing any loss or increasing any gain on a subsequent taxable disposition by the shareholder of the Common Shares. The Fund will send shareholders detailed tax information with respect to the Fund's distributions annually. See "Tax Matters."

The 1940 Act currently limits the number of times the Fund may distribute long-term capital gains in any tax year, which may increase the variability of the Fund's distributions and result in certain distributions being comprised more or less heavily than others of long-term capital gains currently eligible for favorable income tax rates.

Unless a Common Shareholder elects to receive distributions in cash, all distributions of Common Shareholders whose shares are registered with the plan agent will be automatically reinvested in additional Common Shares under the Fund's Dividend Reinvestment Plan. See "Dividend Reinvestment Plan."

Although it does not currently intend to do so, the Board may change the Fund's distribution policy and the amount or timing of distributions, based on a number of factors, including the amount of the Fund's undistributed net investment income and net short- and long-term capital gains and historical and projected net investment income and net short- and long-term capital gains.

Pursuant to the Fund's dividend reinvestment plan (the "Plan"), all common shareholders will have all dividends, including any capital gain dividends, reinvested automatically in additional Common Shares by DST Systems, Inc., as agent for the Common Shareholders (the "Plan Agent"), unless the shareholder elects to receive cash. An election to receive cash may be revoked or reinstated at the option of the shareholder. In the case of record shareholders such as banks, brokers or other nominees that hold common shares for others who are the beneficial owners, the Plan Agent will administer the Plan on the basis of the number of Common Shares certified from time to time by the record shareholder as representing the total amount registered in such shareholder's name and held for the account of beneficial owners who are to participate in the Plan. Shareholders whose shares are held in the name of a bank, broker or nominee should contact the bank, broker or nominee for details.

Common Shares received under the Plan will be issued to you at their NAV on the ex-dividend date; there is no sales or other charge for reinvestment. You are free to withdraw from the Plan and elect to receive cash at any time by giving written notice to the Plan Agent or by contacting your broker or dealer, who will inform the Fund. Your request must be received by the Fund at least ten days prior to the payment date of the distribution to be effective for that dividend or capital gain distribution.

The Plan Agent provides written confirmation of all transactions in the shareholder accounts in the Plan, including information you may need for tax records. Any proxy you receive will include all Common Shares you have received under the Plan.

Automatically reinvested dividends and distributions are taxed in the same manner as cash dividends and distributions. See "Tax Matters."

The Fund and the Plan Agent reserve the right to amend or terminate the Plan. There is no direct service charge to participants in the Plan; however, the Fund reserves the right to amend the Plan to include a service charge payable by the participants. Additional information about the Plan may be obtained from the Plan Agent.

The following is a brief description of the capital structure of the Fund. This description does not purport to be complete and is subject to and qualified in its entirety by reference to the Declaration and the Fund's Bylaws, as amended and restated through the date hereof (the "Bylaws"). The Declaration and Bylaws are each exhibits to the registration statement of which this prospectus is a part.

The Fund is an unincorporated voluntary association with transferable shares of beneficial interest (commonly referred to as a "Massachusetts business trust") established under the laws of The Commonwealth of Massachusetts by the Declaration. The Declaration provides that the Trustees of the Fund may authorize separate classes of shares of beneficial interest. Preferred shares may be issued in one or more series, with such par value and with such rights as determined by the Board, by action of the Board without the approval of the Common Shareholders.

The Declaration authorizes the issuance of an unlimited number of Common Shares. The Common Shares will be issued with a par value of $0.00001 per share. The Fund currently has two separate classes of Common Shares: Institutional Class and Class A. An investment in any share class of the Fund represents an investment in the same assets of the Fund. However, the ongoing fees and expenses for each share class may be different. The fees and expenses for the Fund are set forth in "Summary of Fund Expenses" above. Certain share class details are set forth in "Plan of Distribution" above.

Common Shareholders will be entitled to the payment of dividends and other distributions when, as and if declared by the Board. All Common Shares have equal rights to the payment of dividends and the distribution of assets upon liquidation. Common Shares will, when issued, be fully paid and, subject to matters discussed in "Anti-Takeover and Other Provisions in the Declaration of Trust," non-assessable, and will have no pre-emptive or conversion rights or rights to cumulative voting. Upon liquidation of the Fund, after paying or adequately providing for the payment of all liabilities of the Fund and the liquidation preference with respect to any outstanding preferred shares, and upon receipt of such releases, indemnities and refunding agreements as they deem necessary for their protection, the Trustees may distribute the remaining assets of the Fund among the Fund's Common Shareholders.

The Fund does not intend to hold annual meetings of shareholders. If the Fund does hold a meeting of shareholders, Common Shares of the Fund entitle their holders to one vote for each Common Share held; however, separate votes are taken by each class of Common Shares on matters affecting an individual class of Common Shares. Each fractional share shall be entitled to a proportionate fractional vote, except as otherwise provided by the Declaration, Bylaws, or required by applicable law.

The Fund will send unaudited reports at least semiannually and audited financial statements annually to all of its Common Shareholders.

The Common Shares are not, and are not expected to be, listed for trading on any national securities exchange nor is there expected to be any secondary trading market in the Common Shares.

The following table shows the amounts of Common Shares of the Fund that were authorized and outstanding as of October 1, 2018:

As noted under "Leverage," the Fund may add leverage to its portfolio by utilizing reverse repurchase agreements, credit default swaps, dollar rolls or borrowings, such as through bank loans or commercial paper and/or other credit facilities. The Fund may also enter into transactions other than those noted above that may give rise to a form of leverage including, among others, futures and forward contracts (including foreign currency exchange contracts), credit default swaps, total return swaps and other derivative transactions, loans of portfolio securities, short sales and when-issued, delayed delivery and forward commitment transactions.

Although it has no present intention to do so, the Fund may determine in the future to issue preferred shares or other senior securities to add leverage to its portfolio. Any such preferred shares would have complete priority upon distribution of assets over the Common Shares.

The Declaration and the Bylaws include provisions that could limit the ability of other entities or persons to acquire control of the Fund or to convert the Fund to open-end status.

As described below, the Declaration grants special approval rights with respect to certain matters to members of the Board who qualify as "Continuing Trustees," which term means a Trustee who either (i) has been a member of the Board for a period of at least thirty-six months (or since the commencement of the Fund's operations, if less than thirty-six months) or (ii) was nominated to serve as a member of the Board of Trustees by a majority of the Continuing Trustees then members of the Board.

The Declaration requires the affirmative vote or consent of at least seventy-five percent (75%) of the Board of Trustees and holders of at least seventy-five percent (75%) of the Fund's shares to authorize certain Fund transactions not in the ordinary course of business, including a merger or consolidation or share exchange, any shareholder proposal as to specific

investment decisions made or to be with respect to the assets of the Fund or issuance or transfer by the Fund of the Fund's shares having an aggregate fair market value of $1,000,000 or more (except as may be made pursuant to a public offering, the Fund's dividend reinvestment plan or upon exercise of any stock subscription rights), unless the transaction is authorized by both a majority of the Trustees and seventy-five percent (75%) of the Continuing Trustees (in which case no shareholder authorization would be required by the Declaration, but may be required in certain cases under the 1940 Act). The Declaration also requires the affirmative vote or consent of holders of at least seventy-five percent (75%) of the Fund's shares entitled to vote on the matter to authorize a conversion of the Fund from a closed-end to an open-end investment company, unless the conversion is authorized by both a majority of the Trustees and seventy-five percent (75%) of the Continuing Trustees (in which case shareholders would have only the minimum voting rights required by the 1940 Act with respect to the conversion). Also, the Declaration provides that the Fund may be terminated at any time by vote or consent of at least seventy-five percent (75%) of the Fund's shares or, alternatively, by vote or consent of both a majority of the Trustees and seventy-five percent (75%) of the Continuing Trustees. See "Anti-Takeover and Other Provisions in the Declaration of Trust" in the Statement of Additional Information for a more detailed summary of these provisions.

The Trustees may from time to time grant other voting rights to shareholders with respect to these and other matters in the Bylaws, certain of which are required by the 1940 Act.

The overall effect of these provisions is to render more difficult the accomplishment of a merger or the assumption of control of the Fund by a third party. These provisions also provide, however, the advantage of potentially requiring persons seeking control of the Fund to negotiate with its management regarding the price to be paid and facilitating the continuity of the Fund's investment objectives and policies. The Board of Trustees of the Fund has considered the foregoing anti-takeover provisions and concluded that they are in the best interests of the Fund and its shareholders, including Common Shareholders.

The foregoing is intended only as a summary and is qualified in its entirety by reference to the full text of the Declaration and the Bylaws, both of which are on file with the SEC.

Under Massachusetts law, shareholders could, in certain circumstances, be held personally liable for the obligations of the Fund. However, the Declaration contains an express disclaimer of shareholder liability for debts or obligations of the Fund and requires that notice of such limited liability be given in each agreement, obligation or instrument entered into or executed by the Fund or the Trustees. The Declaration further provides for indemnification out of the assets and property of the Fund for all loss and expense of any shareholder held personally liable for the obligations of the Fund. Thus, the risk of a shareholder incurring financial loss on account of shareholder liability is limited to circumstances in which the Fund would be unable to meet its obligations. The Fund believes that the likelihood of such circumstances is remote.

This section summarizes some of the U.S. federal income tax consequences to U.S. persons of investing in the Fund; the consequences under other tax laws and to non-U.S. shareholders may differ. Shareholders should consult their tax advisors as to the possible application of federal, state, local or non-U.S. income tax laws. Please see the Statement of Additional Information for additional information regarding the tax aspects of investing in the Fund.

The Fund intends to elect to be treated, and intends each year to qualify and be eligible to be treated, as a regulated investment company under Subchapter M of the Internal Revenue Code of 1986, as amended (the "Code"). A regulated investment company is not subject to U.S. federal income tax at the corporate level on income and gains from investments that are distributed to shareholders. The Fund's failure to qualify as a regulated investment company would result in corporate-level taxation, thereby reducing the return on your investment.

A shareholder subject to U.S. federal income tax will generally be subject to tax on Fund distributions. For U.S. federal income tax purposes, Fund distributions will generally be taxable to a shareholder as either ordinary income or capital gains. Fund dividends consisting of distributions of investment income generally are taxable to shareholders as ordinary income. Federal taxes on Fund distributions of capital gains are determined by how long the Fund owned or is deemed to have owned the investments that generated the capital gains, rather than how long a shareholder has owned the shares. Distributions of net capital gains (that is, the excess of net long-term capital gains over net short-term capital losses, in each case determined with reference to any loss carryforwards) that are properly reported by the Fund as capital gain dividends generally will be treated as long-term capital gains includible in a shareholder's net capital gains and taxed to individuals at reduced rates. The Fund does not expect a significant portion of its distributions to be treated as long-term capital gains. Distributions of net short-term capital gains in excess of net long-term capital losses generally will be taxable to you as ordinary income.

The Code generally imposes a 3.8% Medicare contribution tax on the "net investment income" of certain individuals, trusts and estates to the extent their income exceeds certain threshold amounts. Net investment income generally includes for this purpose dividends paid by the Fund, including any Capital Gain Dividends, and including net capital gains recognized on the sale, redemption or exchange of shares of the Fund. Shareholders are advised to consult their tax advisors regarding the possible implications of this additional tax on their investment in the Fund.

Subject to any future regulatory guidance to the contrary, any distribution of income attributable to qualified REIT dividends from the Fund's investment in a REIT will ostensibly not qualify for the deduction that would be available to a non-corporate shareholder were the shareholder to own such REIT directly. As a result, it is possible that a non-corporate shareholder will be subject to a higher effective tax rate on any such distributions received from the Fund compared to the effective rate applicable to any qualified

REIT dividends the shareholder would receive if the shareholder invested directly in a REIT.

The ultimate tax characterization of the Fund's distributions made in a taxable year cannot be determined finally until after the end of that taxable year. As a result, there is a possibility that the Fund may make total distributions during a taxable year in an amount that exceeds the Fund's current and accumulated earnings and profits. In that case, the excess generally would be treated as return of capital and would reduce a shareholder's tax basis in the applicable shares, with any amounts exceeding such basis treated as gain from the sale of such shares. A return of capital is not taxable, but it reduces a shareholder's tax basis in the shares, thus reducing any loss or increasing any gain on a subsequent taxable disposition by the shareholder of the Common Shares.

Fund distributions are taxable to shareholders as described above even if they are paid from income or gains earned by the Fund before a shareholder's investment (and thus were included in the price the shareholder paid).

The Fund's transactions in foreign currencies, foreign-currency denominated debt obligations, derivatives, short sales, or similar or related transactions could affect the amount, timing and character of distributions from the Fund, and could increase the amount and accelerate the timing for payment of taxes payable by shareholders. The Fund's investments in certain debt instruments could cause the Fund to recognize taxable income in excess of the cash generated by such investments (which may require the Fund to liquidate other investments in order to make required distributions). The Fund does not expect to qualify to pass through tax-exempt dividends to shareholders.

The Fund may invest in one or more Subsidiaries that are treated as disregarded entities or as transparent or as transparent for U.S. federal income tax purposes. In the case of a Subsidiary that is so treated, for U.S. federal income tax purposes, (i) the Fund is treated as owning the Subsidiary's assets directly; (ii) any income, gain, loss, deduction or other tax items arising in respect of the Subsidiary's assets will be treated as if they are realized or incurred, as applicable, directly by the Fund; and (iii) distributions, if any, the Fund receives from the Subsidiary will have no effect on the Fund's U.S. federal income tax liability.

Income received by the Fund from sources within foreign countries may be subject to withholding and other taxes imposed by such countries, which will reduce the return on those investments. If, at the close of its taxable year, more than 50% of the value of the Fund's total assets consists of securities of foreign corporations, including for this purpose foreign governments, the Fund will be permitted to make an election under the Code that will allow shareholders a deduction or credit for foreign taxes paid by the Fund. If the Fund does not qualify for or chooses not to make such an election, shareholders will not be entitled to claim a credit or deduction for U.S. federal income tax purposes with respect to foreign taxes paid by the Fund; in that case the foreign tax will nonetheless reduce the Fund's taxable income. Even if the Fund elects to pass through to its shareholders foreign tax credits or deductions, tax-exempt shareholders and those who invest in the Fund through tax-advantaged accounts such as IRAs will not benefit from any such tax credit or deduction.

Any gain resulting from the disposition of Common Shares that is treated as a sale or exchange for U.S. federal income tax purposes generally will be taxable to shareholders as capital gains for U.S. federal income tax purposes.

Shareholders who offer, and are able to sell all of the Common Shares they hold or are deemed to hold in response to a repurchase offer (as described above) generally will be treated as having sold their shares and generally will recognize a capital gain or loss. In the case of shareholders who tender or are able to sell fewer than all of their shares, it is possible that any amounts that the shareholder receives in such repurchase will be taxable as a dividend to such shareholder. In addition, there is a risk that shareholders who do not tender any of their shares for repurchase, or whose percentage interest in the Fund otherwise increases as a result of the repurchase offer, will be treated for U.S. federal income tax purposes as having received a taxable dividend distribution as a result of their proportionate increase in the ownership of the Fund. The Fund's use of cash to repurchase shares could adversely affect its ability to satisfy the distribution requirements for treatment as a regulated investment company. The Fund could also recognize income in connection with its liquidation of portfolio securities to fund share repurchases. Any such income would be taken into account in determining whether such distribution requirements are satisfied.

The Fund is generally required to withhold and remit to the U.S. Treasury a percentage of the taxable distributions and redemption proceeds paid to any shareholder who fails to properly furnish the Fund with a correct taxpayer identification number, who has under-reported dividend or interest income, or who fails to certify to the Fund that he, she or it is not subject to such withholding.

The primary custodian of the assets of the Fund is State Street Bank and Trust Company. State Street Bank and Trust Company's principal business address is One Lincoln Street, Boston, MA 02111. The primary custodian performs custodial and fund accounting services as well as sub-administrative and compliance services on behalf of the Fund. UMB Bank, n.a. also serves as a custodian of the Fund for the purpose of processing investor subscriptions and repurchases. UMB Bank, n.a.'s principal business address is 1010 Grand Boulevard, Kansas City, MO 64106. Wells Fargo Bank, N.A., 751 Kasota Avenue, Minneapolis, MN 55414, serves as a custodian of certain assets held by the Fund's Subsidiaries.

DST Systems, Inc., serves as the Fund's transfer agent, registrar, dividend disbursement agent and shareholder servicing agent, as well as agent for the Fund's Dividend Reinvestment Plan.

PricewaterhouseCoopers LLP ("PwC"), 1100 Walnut Street, Suite 1300, Kansas City, MO 64106, serves as independent registered public accounting firm for the Fund. PwC provides audit services, tax assistance and consultation in connection with review of SEC and IRS filings.

Certain legal matters will be passed on for the Fund by Ropes & Gray LLP, Boston, Massachusetts.

The Fund's investments may range in quality from securities rated in the lowest category to securities rated in the highest category (as rated by Moody's, S&P or Fitch or, if unrated, determined by PIMCO to be of comparable quality). The percentage of the Fund's assets invested in securities in a particular rating category will vary. The following terms are generally used to describe the credit quality of fixed-income securities:

High Quality Debt Securities are those rated in one of the two highest rating categories (the highest category for commercial paper) or, if unrated, deemed comparable by PIMCO.

Investment Grade Debt Securities are those rated in one of the four highest rating categories, or, if unrated, deemed comparable by PIMCO.

Below Investment Grade, High Yield Securities ("Junk Bonds") are those rated lower than Baa3 by Moody's, BBB- by S&P or Fitch and comparable securities. They are deemed predominately speculative with respect to the issuer's ability to repay principal and interest.

The following is a description of Moody's, S&P's and Fitch's rating categories applicable to fixed-income securities.

Ratings assigned on Moody's global long-term rating scales are forward-looking opinions of the relative credit risks of financial obligations issued by non-financial corporations, financial institutions, structured finance vehicles, project finance vehicles, and public sector entities. Long-term ratings are assigned to issuers or obligations with an original maturity of one year or more and reflect both on the likelihood of a default on contractually promised payments and the expected financial loss suffered in the event of default.

Aaa: Obligations rated Aaa are judged to be of the highest quality, subject to the lowest level of credit risk.

Aa: Obligations rated Aa are judged to be of high quality and are subject to very low credit risk.

A: Obligations rated A are judged to be upper-medium grade and are subject to low credit risk.

Baa: Obligations rated Baa are judged to be medium-grade and subject to moderate credit risk and as such may possess certain speculative characteristics.

Ba: Obligations rated Ba are judged to be speculative and are subject to substantial credit risk.

B: Obligations rated B are considered speculative and are subject to high credit risk.

Caa: Obligations rated Caa are judged to be speculative of poor standing and are subject to very high credit risk.

Ca: Obligations rated Ca are highly speculative and are likely in, or very near, default, with some prospect of recovery of principal and interest.

C: Obligations rated C are the lowest rated and are typically in default, with little prospect for recovery of principal or interest.

Moody's appends numerical modifiers 1, 2, and 3 to each generic rating classification from Aa through Caa. The modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a mid-range ranking; and the modifier 3 indicates a ranking in the lower end of that generic rating category. Additionally, a "(hyb)" indicator is appended to all ratings of hybrid securities issued by banks, insurers, finance companies, and securities firms.*

* By their terms, hybrid securities allow for the omission of scheduled dividends, interest, or principal payments, which can potentially result in impairment if such an omission occurs. Hybrid securities may also be subject to contractually allowable write-downs of principal that could result in impairment. Together with the hybrid indicator, the long-term obligation rating assigned to a hybrid security is an expression of the relative credit risk associated with that security.

Moody's assigns provisional ratings to medium-term note (MTN) programs and definitive ratings to the individual debt securities issued from them (referred to as drawdowns or notes).

MTN program ratings are intended to reflect the ratings likely to be assigned to drawdowns issued from the program with the specified priority of claim (e.g., senior or subordinated). To capture the contingent nature of a program rating, Moody's assigns provisional ratings to MTN programs. A provisional rating is denoted by a (P) in front of the rating.

The rating assigned to a drawdown from a rated MTN or bank/deposit note program is definitive in nature, and may differ from the program rating if the drawdown is exposed to additional credit risks besides the issuer's default, such as links to the defaults of other issuers, or has other structural features that warrant a different rating. In some circumstances, no rating may be assigned to a drawdown.

Moody's encourages market participants to contact Moody's Ratings Desks or visit www.moodys.com directly if they have questions regarding ratings for specific notes issued under a medium-term note program. Unrated notes issued under an MTN program may be assigned an NR (not rated) symbol.

Global Short-Term Rating Scale
Ratings assigned on Moody's global short-term rating scales are forward-looking opinions of the relative credit risks of financial obligations issued by non-financial corporates, financial institutions, structured finance vehicles, project finance vehicles, and public sector entities. Short-term ratings are assigned to obligations with an original maturity of thirteen months or less and reflect both on the likelihood of a default on contractually promised payments and the expected financial loss suffered in the event of default.

Moody's employs the following designations to indicate the relative repayment ability of rated issuers:

P-1: Issuers (or supporting institutions) rated Prime-1 have a superior ability to repay short-term debt obligations.

P-2: Issuers (or supporting institutions) rated Prime-2 have a strong ability to repay short-term debt obligations.

P-3: Issuers (or supporting institutions) rated Prime-3 have an acceptable ability to repay short-term obligations.

NP: Issuers (or supporting institutions) rated Not Prime do not fall within any of the Prime rating categories.

Moody's long-term National Scale Ratings (NSRs) are opinions of the relative creditworthiness of issuers and financial obligations within a particular country. NSRs are not designed to be compared among countries; rather, they address relative credit risk within a given country. Moody's assigns national scale ratings in certain local capital markets in which investors have found the global rating scale provides inadequate differentiation among credits or is inconsistent with a rating scale already in common use in the country. In each specific country, the last two characters of the rating indicate the country in which the issuer is located (e.g., Aaa.br for Brazil).

Aaa.n: Issuers or issues rated Aaa.n demonstrate the strongest creditworthiness relative to other domestic issuers.

Aa.n: Issuers or issues rated Aa.n demonstrate very strong creditworthiness relative to other domestic issuers.

A.n: Issuers or issues rated A.n present above-average creditworthiness relative to other domestic issuers.

Baa.n: Issuers or issues rated Baa.n represent average creditworthiness relative to other domestic issuers.

Ba.n: Issuers or issues rated Ba.n demonstrate below-average creditworthiness relative to other domestic issuers.

B.n: Issuers or issues rated B.n demonstrate weak creditworthiness relative to other domestic issuers.

Caa.n: Issuers or issues rated Caa.n demonstrate very weak creditworthiness relative to other domestic issuers.

Ca.n: Issuers or issues rated Ca.n demonstrate extremely weak creditworthiness relative to other domestic issuers.

C.n: Issuers or issues rated C.n demonstrate the weakest creditworthiness relative to other domestic issuers.

Moody's appends numerical modifiers 1, 2, and 3 to each generic rating classification from Aa through Caa. The modifier 1 indicates that the obligation ranks in the higher end of its generic rating category; the modifier 2 indicates a mid-range ranking; and the modifier 3 indicates a ranking in the lower end of that generic rating category. National scale long-term ratings of D.ar and E.ar may also be applied to Argentine obligations.

National Scale Short-Term Ratings
Moody's short-term NSRs are opinions of the ability of issuers in a given country, relative to other domestic issuers, to repay debt obligations that have an original maturity not exceeding thirteen months. Short-term NSRs in one country should not be compared with short-term NSRs in another country, or with Moody's global ratings.

There are four categories of short-term national scale ratings, generically denoted N-1 through N-4 as defined below.

In each specific country, the first two letters indicate the country in which the issuer is located (e.g., BR-1 through BR-4 for Brazil).

N-1: Issuers rated N-1 have the strongest ability to repay short-term senior unsecured debt obligations relative to other domestic issuers.

N-2: Issuers rated N-2 have an above average ability to repay short-term senior unsecured debt obligations relative to other domestic issuers.

N-3: Issuers rated N-3 have an average ability to repay short-term senior unsecured debt obligations relative to other domestic issuers.

N-4: Issuers rated N-4 have a below average ability to repay short-term senior unsecured debt obligations relative to other domestic issuers.

The short-term rating symbols P-1.za, P-2.za, P-3.za and NP.za are used in South Africa. National scale short-term ratings of AR-5 and AR-6 may also be applied to Argentine obligations.

Short-Term Obligation Ratings
The Municipal Investment Grade (MIG) scale is used to rate US municipal bond anticipation notes of up to three years maturity. Municipal notes rated on the MIG scale may be secured by either pledged revenues or proceeds of a take-out financing received prior to note maturity. MIG ratings expire at the maturity of the obligation, and the issuer's long-term rating is only one consideration in assigning the MIG rating. MIG ratings are divided into three levels--MIG 1 through MIG 3--while speculative grade short-term obligations are designated SG.

MIG 1: This designation denotes superior credit quality. Excellent protection is afforded by established cash flows, highly reliable liquidity support, or demonstrated broad-based access to the market for refinancing.

MIG 2: This designation denotes strong credit quality. Margins of protection are ample, although not as large as in the preceding group.

MIG 3: This designation denotes acceptable credit quality. Liquidity and cash-flow protection may be narrow, and market access for refinancing is likely to be less well-established.

SG: This designation denotes speculative-grade credit quality. Debt instruments in this category may lack sufficient margins of protection.

Demand Obligation Ratings
In the case of variable rate demand obligations (VRDOs), a two-component rating is assigned: a long- or short-term debt rating and a demand obligation rating. The first element represents Moody's evaluation of risk associated with scheduled principal and interest payments. The second element represents Moody's evaluation of risk associated with the ability to receive purchase price upon demand ("demand feature"). The second element uses a rating from a variation of the MIG scale called the Variable Municipal Investment Grade (VMIG) scale.

VMIG 1: This designation denotes superior credit quality. Excellent protection is afforded by the superior short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.

VMIG 2: This designation denotes strong credit quality. Good protection is afforded by the strong short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.

VMIG 3: This designation denotes acceptable credit quality. Adequate protection is afforded by the satisfactory short-term credit strength of the liquidity provider and structural and legal protections that ensure the timely payment of purchase price upon demand.

SG: This designation denotes speculative-grade credit quality. Demand features rated in this category may be supported by a liquidity provider that does not have an investment grade short-term rating or may lack the structural and/or legal protections necessary to ensure the timely payment of purchase price upon demand.

Long-Term Issue Credit Ratings
Issue credit ratings are based, in varying degrees, on S&P Global Ratings' ("S&P") analysis of the following considerations:

Likelihood of payment—capacity and willingness of the obligor to meet its financial commitment on a financial obligation in accordance with the terms of the obligation;

Protection afforded by, and relative position of, the financial obligation in the event of a bankruptcy, reorganization, or other arrangement under the laws of bankruptcy and other laws affecting creditors' rights.

Issue ratings are an assessment of default risk, but may incorporate an assessment of relative seniority or ultimate recovery in the event of default. Junior obligations are typically rated lower than senior obligations, to reflect the lower priority in bankruptcy, as noted above. (Such differentiation may apply when an entity has both senior and subordinated obligations, secured and unsecured obligations, or operating company and holding company obligations.)

Investment Grade
AAA: An obligation rated 'AAA' has the highest rating assigned by S&P. The obligor's capacity to meet its financial commitment on the obligation is extremely strong.

AA: An obligation rated 'AA' differs from the highest-rated obligations only to a small degree. The obligor's capacity to meet its financial commitment on the obligation is very strong.

A: An obligation rated 'A' is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher-rated categories. However, the obligor's capacity to meet its financial commitment on the obligation is still strong.

BBB: An obligation rated ‘BBB' exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.

Speculative Grade
Obligations rated 'BB', 'B', 'CCC', 'CC', and 'C' are regarded as having significant speculative characteristics. 'BB' indicates the least degree of speculation and 'C' the highest. While such obligations will likely have some quality and protective characteristics, these may be outweighed by large uncertainties or major exposures to adverse conditions.

BB: An obligation rated 'BB' is less vulnerable to nonpayment than other speculative issues. However, it faces major ongoing uncertainties or exposure to adverse business, financial, or economic conditions which could lead to the obligor's inadequate capacity to meet its financial commitment on the obligation.

B: An obligation rated 'B' is more vulnerable to nonpayment than obligations rated ‘BB', but the obligor currently has the capacity to meet its financial commitment on the obligation. Adverse business, financial, or economic conditions will likely impair the obligor's capacity or willingness to meet its financial commitment on the obligation.

CCC: An obligation rated 'CCC' is currently vulnerable to nonpayment, and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitment on the obligation. In the event of adverse business, financial, or economic conditions, the obligor is not likely to have the capacity to meet its financial commitment on the obligation.

CC: An obligation rated 'CC' is currently highly vulnerable to nonpayment. The ‘CC' rating is used when a default has not yet occurred, but S&P expects default to be a virtual certainty, regardless of the anticipated time to default.

C: An obligation rated ‘C' is currently highly vulnerable to nonpayment, and the obligation is expected to have lower relative seniority or lower ultimate recovery compared to obligations that are rated higher.

D: An obligation rated ‘D' is in default or in breach of an imputed promise. For non-hybrid capital instruments, the ‘D' rating category is used when payments on an obligation are not made on the date due, unless S&P believes that such payments will be made within five business days in the absence of a stated grace period or within the earlier of the stated grace period or 30 calendar days. The ‘D' rating also will be used upon the filing of a bankruptcy petition or the taking of similar action and where default on an obligation is a virtual certainty, for example due to automatic stay provisions. An obligation's rating is lowered to ‘D' if it is subject to a distressed exchange offer.

NR: This indicates that a rating has not been assigned or is no longer assigned.

Plus (+) or minus (-): The ratings from ‘AA' to 'CCC' may be modified by the addition of a plus (+) or minus (-) sign to show relative standing within the major rating categories.

Short-Term Issue Credit Ratings
A-1: A short-term obligation rated 'A-1' is rated in the highest category by S&P. The obligor's capacity to meet its financial commitment on the obligation is strong. Within this category, certain obligations are designated with a plus sign (+). This indicates that the obligor's capacity to meet its financial commitment on these obligations is extremely strong.

A-2: A short-term obligation rated 'A-2' is somewhat more susceptible to the adverse effects of changes in circumstances and economic conditions than obligations in higher rating categories. However, the obligor's capacity to meet its financial commitment on the obligation is satisfactory.

A-3: A short-term obligation rated 'A-3' exhibits adequate protection parameters. However, adverse economic conditions or changing circumstances are more likely to lead to a weakened capacity of the obligor to meet its financial commitment on the obligation.

B: A short-term obligation rated 'B' is regarded as vulnerable and has significant speculative characteristics. The obligor currently has the capacity to meet its financial commitments; however, it faces major ongoing uncertainties which could lead to the obligor's inadequate capacity to meet its financial commitments.

C: A short-term obligation rated 'C' is currently vulnerable to nonpayment and is dependent upon favorable business, financial, and economic conditions for the obligor to meet its financial commitment on the obligation.

D: A short-term obligation rated ‘D' is in default or in breach of an imputed promise. For non-hybrid capital instruments, the ‘D' rating category is used when payments on an obligation are not made on the date due, unless S&P believes that such payments will be made within any stated grace period. However, any stated grace period longer than five business days will be treated as five business days. The ‘D' rating also will be used upon the filing of a bankruptcy petition or the taking of a similar action and where default on an obligation is a virtual certainty, for example due to automatic stay provisions. An obligation's rating is lowered to ‘D' if it is subject to a distressed exchange offer.

Dual Ratings: Dual ratings may be assigned to debt issues that have a put option or demand feature. The first component of the rating addresses the likelihood of repayment of principal and interest as due, and the second component of the rating addresses only the demand feature. The first component of the rating can relate to either a short-term or long-term transaction and accordingly use either short-term or long-term rating symbols. The second component of the rating relates to the put option and is assigned a short-term rating symbol (for example, ‘AAA/A-1+' or ‘A-1+/A-1'). With U.S. municipal short-term demand debt, the U.S. municipal short-term note rating symbols are used for the first component of the rating (for example, ‘SP-1+/A-1+').

Active Qualifiers
S&P uses the following qualifiers that limit the scope of a rating. The structure of the transaction can require the use of a qualifier such as a 'p' qualifier, which indicates the rating addressed the principal portion of the obligation only. A qualifier appears as a suffix and is part of the rating.

L: Ratings qualified with ‘L' apply only to amounts invested up to federal deposit insurance limits.

p: This suffix is used for issues in which the credit factors, the terms, or both, that determine the likelihood of receipt of payment of principal are different from the credit factors, terms or both that determine the likelihood of receipt of interest on the obligation. The ‘p' suffix indicates that the rating addresses the principal portion of the obligation only and that the interest is not rated.

prelim: Preliminary ratings, with the 'prelim' suffix, may be assigned to obligors or obligations, including financial programs, in the circumstances described below. Assignment of a final rating is conditional on the receipt by S&P of appropriate documentation. S&P reserves the right not to issue a final rating. Moreover, if a final rating is issued, it may differ from the preliminary rating.

Preliminary ratings may be assigned to obligations, most commonly structured and project finance issues, pending receipt of final documentation and legal opinions.

Preliminary ratings may be assigned to obligations that will likely be issued upon the obligor's emergence from bankruptcy or similar reorganization, based on late-stage reorganization plans, documentation and discussions with the obligor. Preliminary ratings may also be assigned to the obligors. These ratings consider the anticipated general credit quality of the reorganized or post-bankruptcy issuer as well as attributes of the anticipated obligation(s).

Preliminary ratings may be assigned to entities that are being formed or that are in the process of being independently established when, in S&P opinion, documentation is close to final. Preliminary ratings may also be assigned to the obligations of these entities.

Preliminary ratings may be assigned when a previously unrated entity is undergoing a well-formulated restructuring, recapitalization, significant financing or other transformative event, generally at the point that investor or lender commitments are invited. The preliminary rating may be assigned to the entity and to its proposed obligation(s). These preliminary ratings consider the anticipated general credit quality of the obligor, as well as attributes of the anticipated obligation(s), assuming successful completion of the transformative event. Should the transformative event not occur, S&P would likely withdraw these preliminary ratings.

A preliminary recovery rating may be assigned to an obligation that has a preliminary issue credit rating.

t: This symbol indicates termination structures that are designed to honor their contracts to full maturity or, should certain events occur, to terminate and cash settle all their contracts before their final maturity date.

cir: This symbol indicates a Counterparty Instrument Rating (CIR), which is a forward-looking opinion about the creditworthiness of an issuer in a securitization structure with respect to a specific financial obligation to a counterparty (including interest rate swaps, currency swaps, and liquidity facilities). The CIR is determined on an ultimate payment basis; these opinions do not take into account timeliness of payment.

*:This symbol that indicated that the rating was contingent upon S&P receipt of an executed copy of the escrow agreement or closing documentation confirming investments and cash flows. Discontinued use in August 1998.

c: This qualifier was used to provide additional information to investors that the bank may terminate its obligation to purchase tendered bonds if the long-term credit rating of the issuer was lowered to below an investment-grade level and/or the issuer's bonds were deemed taxable. Discontinued use in January 2001.

G: The letter 'G' followed the rating symbol when a fund's portfolio consisted primarily of direct U.S. government securities.

pi: This qualifier was used to indicate ratings that were based on an analysis of an issuer's published financial information, as well as additional information in the public domain. Such ratings did not, however, reflect in-depth meetings with an issuer's management and therefore, could have been based on less comprehensive information than ratings without a 'pi' suffix. Discontinued use as of December 2014 and as of August 2015 for Lloyd's Syndicate Assessments.

pr: The letters ‘pr' indicate that the rating was provisional. A provisional rating assumed the successful completion of a project financed by the debt being rated and indicates that payment of debt service requirements was largely or entirely dependent upon the successful, timely completion of the project. This rating, however, while addressing credit quality subsequent to completion of the project, made no comment on the likelihood of or the risk of default upon failure of such completion.

q: A ‘q' subscript indicates that the rating is based solely on quantitative analysis of publicly available information. Discontinued use in April 2001.

r: The ‘r' modifier was assigned to securities containing extraordinary risks, particularly market risks, which are not covered in the credit rating. The absence of an ‘r' modifier should not be taken as an indication that an obligation would not exhibit extraordinary non-credit related risks. S&P discontinued the use of the ‘r' modifier for most obligations in June 2000 and for the balance of obligations (mainly structured finance transactions) in November 2002.

Long-Term Credit Ratings
Investment Grade
Rated entities in a number of sectors, including financial and non-financial corporations, sovereigns, insurance companies and certain sectors within public finance, are generally assigned Issuer Default Ratings (IDRs). IDRs are also assigned to certain entities in global infrastructure, project finance, and public finance. IDRs opine on an entity's relative vulnerability to default (including by way of a distressed debt exchange) on financial obligations. The threshold default risk addressed by the IDR is generally that of the financial obligations whose non-payment would best reflect the uncured failure of that entity. As such, IDRs also address relative vulnerability to bankruptcy, administrative receivership or similar concepts.

In aggregate, IDRs provide an ordinal ranking of issuers based on the agency's view of their relative vulnerability to default, rather than a prediction of a specific percentage likelihood of default.

AAA: Highest credit quality. ‘AAA' ratings denote the lowest expectation of credit risk. They are assigned only in cases of exceptionally strong capacity for payment of financial commitments. This capacity is highly unlikely to be adversely affected by foreseeable events.

AA: Very high credit quality. 'AA' ratings denote expectations of very low credit risk. They indicate very strong capacity for payment of financial commitments. This capacity is not significantly vulnerable to foreseeable events.

A: High credit quality. 'A' ratings denote expectations of low credit risk. The capacity for payment of financial commitments is considered strong. This capacity may, nevertheless, be more vulnerable to adverse business or economic conditions than is the case for higher ratings.

BBB: Good credit quality. 'BBB' ratings indicate that expectations of credit risk are currently low. The capacity for payment of financial commitments is considered adequate, but adverse business or economic conditions are more likely to impair this capacity.

Speculative Grade
BB: Speculative. ‘BB' ratings indicate an elevated vulnerability to credit risk, particularly in the event of adverse changes in business or economic conditions over time; however, business or financial alternatives may be available to allow financial commitments to be met.

B: Highly speculative. ‘B' ratings indicate that material credit risk is present.

Defaulted obligations typically are not assigned 'RD' or ‘D' ratings, but are instead rated in the ‘B' to ‘C' rating categories, depending on their recovery prospects and other relevant characteristics. This approach better aligns obligations that have comparable overall expected loss but varying vulnerability to default and loss.

The modifiers "+" or "-" may be appended to a rating to denote relative status within major rating categories. For example, the rating category 'AA' has three notch-specific rating levels ('AA+'; 'AA'; 'AA-'; each a rating level). Such suffixes are not added to the ‘AAA' obligation rating category, or to corporate finance obligation ratings in the categories below ‘CCC.'

The subscript ‘emr' is appended to a rating to denote embedded market risk that is beyond the scope of the rating. The designation is intended to make clear that the rating solely addresses the counterparty risk of the issuing bank. It is not meant to indicate any limitation in the analysis of the counterparty risk, which in all other respects follows published Fitch criteria for analyzing the issuing financial institution. Fitch does not rate these instruments where the principal is to any degree subject to market risk.

Recovery Ratings
Recovery Ratings are assigned to selected individual securities and obligations, most frequently for individual obligations of corporate finance issuers with Issuer Default Ratings (IDRs) in speculative grade categories.

Among the factors that affect recovery rates for securities are the collateral, the seniority relative to other obligations in the capital structure (where appropriate), and the expected value of the company or underlying collateral in distress.

The Recovery Rating scale is based on the expected relative recovery characteristics of an obligation upon the curing of a default, emergence from insolvency or following the liquidation or termination of the obligor or its associated collateral.

Recovery Ratings are an ordinal scale and do not attempt to precisely predict a given level of recovery. As a guideline in developing the rating assessments, the agency employs broad theoretical recovery bands in its ratings approach based on historical averages and analytical judgment, but

actual recoveries for a given security may deviate materially from historical averages.

RR1: Outstanding recovery prospects given default. ‘RR1' rated securities have characteristics consistent with securities historically recovering 91%-100% of current principal and related interest.

RR2: Superior recovery prospects given default. ‘RR2' rated securities have characteristics consistent with securities historically recovering 71%-90% of current principal and related interest.

RR3: Good recovery prospects given default. ‘RR3' rated securities have characteristics consistent with securities historically recovering 51%-70% of current principal and related interest.

RR4: Average recovery prospects given default. ‘RR4' rated securities have characteristics consistent with securities historically recovering 31%-50% of current principal and related interest.

RR5: Below average recovery prospects given default. ‘RR5' rated securities have characteristics consistent with securities historically recovering 11%-30% of current principal and related interest.

RR6: Poor recovery prospects given default. ‘RR6' rated securities have characteristics consistent with securities historically recovering 0%-10% of current principal and related interest.

Short-Term Credit Ratings
A short-term issuer or obligation rating is based in all cases on the short-term vulnerability to default of the rated entity and relates to the capacity to meet financial obligations in accordance with the documentation governing the relevant obligation. Short-term deposit ratings may be adjusted for loss severity. Short-Term Ratings are assigned to obligations whose initial maturity is viewed as "short term" based on market convention. Typically, this means up to 13 months for corporate, sovereign, and structured obligations, and up to 36 months for obligations in U.S. public finance markets.

F1: Highest short-term credit quality. Indicates the strongest intrinsic capacity for timely payment of financial commitments; may have an added "+" to denote any exceptionally strong credit feature.

F2: Good short-term credit quality. Good intrinsic capacity for timely payment of financial commitments.

F3: Fair short-term credit quality. The intrinsic capacity for timely payment of financial commitments is adequate.

B: Speculative short-term credit quality. Minimal capacity for timely payment of financial commitments, plus heightened vulnerability to near term adverse changes in financial and economic conditions.

RD: Restricted default. Indicates an entity that has defaulted on one or more of its financial commitments, although it continues to meet other financial obligations. Typically applicable to entity ratings only.

D: Default. Indicates a broad-based default event for an entity, or the default of a short-term obligation.

The availability of initial charge waivers and discounts may depend on the particular financial firm or type of account through which you purchase or hold Fund shares. For waivers or discounts not available through a particular financial firm, investors will have to purchase shares directly from the Fund (or the Distributor) or through another financial firm to receive such waivers or discounts.

The following descriptions of breakpoints and/or sales charge waivers and discounts for a particular financial firm and class(es) of shares set forth information provided by the financial firm that the firm has represented is current as of the date of this prospectus. These breakpoints, waivers or discounts, which may vary from those disclosed elsewhere in the prospectus, are subject to change. The Fund will update this Appendix periodically based on information provided by the applicable financial firm. Neither the Fund, the Investment Adviser nor PIMCO Investments LLC supervises the implementation of these breakpoints, waivers or discounts or verifies the firms' administration of these breakpoints, waivers or discounts.

In all instances, it is an investor's responsibility to notify the financial firm of any facts that may qualify the investor for sales charge waivers or discounts. Please contact your financial firm for more information regarding the sales charge waivers and discounts available to you and the firm's related policies and procedures.

The following sales load breakpoints and waivers apply to Class A Common Shares purchases if you have an account with or otherwise purchase Fund shares through Wells Fargo

		Page
	Prospectus Summary	1
	Summary of Fund Expenses	25
	Financial Highlights	26
	The Fund	28
	Use of Proceeds	28
	The Fund's Investment Objectives and Strategies	28
	Leverage	50
	Principal Risks of the Fund	52
	How the Fund Manages Risk	70
	Management of the Fund	72
	Plan of Distribution	75
	Periodic Repurchase Offers	81
	Net Asset Value	83
	Distributions	84
	Dividend Reinvestment Plan	85
	Description of Capital Structure and Shares	86
	Anti-takeover and Other Provisions in the Declaration of Trust	86
	Tax Matters	87
	Custodian and Transfer Agent	88
	Independent Registered Public Accounting Firm	89
	Legal Matters	89
	Table of Contents for the Statement of Additional Information	90
	Appendix A - Description of Securities Ratings	A-1
	Appendix B - Financial Firm-Specific Sales Charge Waivers and Discounts	B-1

	Inst Class	Class A
Maximum Initial Sales Charge (Load) Imposed on Purchases (as a percentage of offering price)	None	3.00%
Dividend Reinvestment Fees	None	None
Repurchase Fee⁽¹⁾	None	None

	Inst Class	Class A
Management Fees⁽¹⁾	1.90%	1.90%
Distribution and/or Service (12b-1) Fees	N/A	0.75%
Interest Payments on Borrowed Funds⁽²⁾	1.11%	1.11%
Other Expenses⁽³⁾	0.10%	0.10%
Total Annual Fund Operating Expenses	3.11%	3.86%
Fee Waiver and/or Expense Reimbursement⁽⁴⁾	(0.02%)	(0.02%)
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	3.09%	3.84%

	1 Year	3 Years	5 Years	10 Years
Institutional Class	$31	$96	$163	$342
Class A	$67	$144	$222	$426

			Investment Operations							Less Distributions‌^(b)														Ratios/Supplemental Data
																										Ratios to Average Net Assets
Selected Per Share Data for the Year or Period Ended^:	Net Asset Value Beginning of Year or Period		Net Investment Income (Loss)‌^(a)		Net Realized/ Unrealized Gain		Total		From Net Investment Income			From Net Realized Capital Gains		Tax Basis Return of Capital		Total			Net Asset Value End of Year or Period		Total Return			Net Assets End of Year or Period (000s)		Expenses‌^(c)			Expenses Excluding Waivers‌^(c)			Expenses Excluding Interest Expense‌^(c)			Expenses Excluding Interest Expense and Waivers‌^(c)			Net Investment Income (Loss)			Portfolio Turnover Rate
Institutional Class
06/30/2018	$	10.32	$	0.71	$	0.00	$	0.71	$	(0.75	)	$	0.00	$	0.00	$	(0.75	)	$	10.28		6.98	%	$	538,772		3.09	%		3.11	%		1.98	%		2.00	%		6.84	%		14	%
02/22/2017 - 06/30/2017		10.00		0.19		0.25		0.44		(0.12	)		0.00		0.00		(0.12	)		10.32		4.36			68,995		1.44	*		5.70	*		1.39	*		5.65	*		5.24	*		11

^	A zero balance may reflect actual amounts rounding to less than $0.01 or 0.01%.
*	Annualized
(a)	Per share amounts based on average number of shares outstanding during the year or period.
(b)	The Tax characterization of distributions is determined in accordance with federal income tax regulations. See Note 2, Distributions—Common Shares, in the Notes to Financial Statements for more information.
(c)	Interest expense primarily relates to participation in borrowing and financing transactions. See Note 5, Borrowings and Other Financing Transactions in the Notes to Financial Statements for more information.

Assumed Portfolio Total Return	(10.00)%	(5.00)%	0.00%	5.00%	10.00%
Common Shares Total Return (net of expenses)	(15.38)%	(8.16)%	(0.95)%	6.26%	13.47%

Name	Since	Recent Professional Experience
Daniel J. Ivascyn	Inception (February 2017)	Group Chief Investment Officer and Managing Director, PIMCO. Mr. Ivascyn joined PIMCO in 1998, previously having been associated with Bear Stearns in the asset backed securities group, as well as T. Rowe Price and Fidelity Investments. He has investment experience since 1992 and holds an MBA in analytic finance from the University of Chicago Graduate School of Business and a bachelor's degree in economics from Occidental College.
Mark Kiesel	Inception (February 2017)	Chief Investment Officer Global Credit and Managing Director, PIMCO. Mr. Kiesel is a member of the PIMCO Investment Committee, a generalist portfolio manager and the global head of corporate bond portfolio management. He has served as a portfolio manager, head of equity derivatives and as a senior Credit Analyst since joining PIMCO in 1996.
Alfred T. Murata	Inception (February 2017)	Managing Director, PIMCO. Mr. Murata is a portfolio manager focusing on mortgage- and asset-backed securities. Prior to joining PIMCO in 2001, he researched and implemented exotic equity and interest-rate derivatives at Nikko Financial Technologies.
Marc Seidner	Inception (February 2017)	Chief Investment Officer Non-traditional Strategies and Managing Director, PIMCO. Mr. Seidner is head of portfolio management in the New York office. He is also a generalist portfolio manager and a member of the Investment Committee. He rejoined PIMCO in November 2014 after serving as head of fixed income at GMO LLC, and previously he was a PIMCO Managing Director, generalist portfolio manager and member of the Investment Committee until January 2014. Prior to joining PIMCO in 2009, he was a managing director and domestic fixed income portfolio manager at Harvard Management Company. Previously, he was director of active core strategies at Standish Mellon Asset Management and a senior portfolio manager at Fidelity Management and Research. He has 29 years of investment experience and holds an undergraduate degree in economics from Boston College.
Christian Stracke	Inception (February 2017)	Managing Director, PIMCO. Mr. Stracke is a managing director in the Newport Beach office, global head of the credit research group, and co-head of PIMCO's BRAVO opportunistic private strategies complex. Mr. Stracke is also a senior portfolio manager across PIMCO's suite of private credit strategies, investing across mortgage, real estate, specialty financials, corporate special situations, and performing private corporate credit. In addition to his portfolio management responsibilities, he sits on the firm's Executive Committee.
Eve Tournier	Inception (February 2017)	Managing Director, PIMCO. Ms. Tournier is a managing director in the London office and head of pan-European credit portfolio management. She is the lead portfolio manager for the firm's global multi-sector credit strategies as well as dedicated European credit and European income-oriented portfolios, and she is also a member of the European portfolio committee

Class A Common Shares are subject to the following sales charge:
Your Investment	As a % of offering price	As a % of net amount invested
Less than $250,000	3.0%	3.09%
$250,000 – $499,999	2.5%	2.56%
$500,000 – $999,999	2.0%	2.04%
$1,000,000 and over	1.0%	1.01%

(1)	(2)	(3)	(4)
Title of Class	Amount Authorized	Amount Held by the Fund for its Account	Amount Outstanding Exclusive of Amount Shown Under (3)
Institutional Class Common Shares	Unlimited	0	62,799,211.434
Class A Common Shares	Unlimited	0	0

The Fund	3
Investment Objective and Policies	3
Investment Restrictions	86
Management of the Fund	90
Distribution of Fund Shares	119
Repurchase of Common Shares	132
Portfolio Transactions and Brokerage	133
Distributions	136
Description of Capital Structure and Shares	136
Anti-Takeover and Other Provisions in the Declaration of Trust	137
Net Asset Value	139
Taxation	140
Performance Related and Comparative Information	159
Custodian, Transfer Agent and Dividend Disbursement Agent	159
Independent Registered Public Accounting Firm	160
Counsel	160
Registration Statement	160
Financial Statements	160
Appendix A — Procedures for Shareholders to Submit Nominee Candidates	A-1

Break Point	As a % of offering price	As a % of net amount invested
Less than $500,000	2.0%	2.04%
$500,000 - $999,999	1.0%	1.01%
$1,000,000 or more	0.50%	0.502%

Table of Contents