Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 494

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 494
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 directly or indirectly, more than 50% of the Fund could be required to report annually their “financial interest” in the Fund’s foreign financial accounts, if any, on FinCEN Form 114, Report of Foreign Bank and Financial Accounts (FBAR). Shareholders should consult a tax advisor, and persons investing in the Fund through an intermediary should contact their intermediary, regarding the applicability to them of this reporting requirement. Each prospective investor is urged to consult its tax adviser regarding the applicability of FATCA and any other reporting requirements with respect to the prospective investor’s own situation, including investments through an intermediary. Shares Purchased Through Tax-Qualified Plans Special tax rules apply to investments through defined contribution plans and other tax-qualified plans. Shareholders should consult their tax advisers to determine the suitability of shares of the Fund as an investment through such plans and the precise effect of an investment on their particular tax situation. PERFORMANCE RELATED AND COMPARATIVE INFORMATION The Fund may quote certain performance-related information and may compare certain aspects of its portfolio and structure to other substantially similar closed-end funds as categorized by Broadridge Financial Solutions, Inc. (“Broadridge”), Morningstar Inc. or other independent services. Comparison of the Fund to an alternative investment

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should be made with consideration of differences in features and expected performance. The Fund may obtain data from sources or reporting services, such as Bloomberg Financial and Broadridge, that the Fund believes to be generally accurate. The Fund, in its advertisements, may refer to pending legislation from time to time and the possible effect of such legislation on investors, investment strategy and related matters. At any time in the future, yields and total return may be higher or lower than past yields and there can be no assurance that any historical results will continue. Past performance is not indicative of future results. At the time Common Shareholders sell their shares, they may be worth more or less than their original investment. SHAREHOLDER SERVICING AGENTS, CUSTODIAN, TRANSFER AGENT AND DIVIDEND DISBURSEMENT AGENT The Investment Manager, at its own expense, has retained UBS Investment Bank (formerly known as UBS Warburg LLC) and Merrill Lynch & Co., Merrill Lynch, Pierce, Fenner & Smith Incorporated to serve as shareholder servicing agents for the Fund. State Street Bank and Trust Company, 801 Pennsylvania Avenue Kansas City, MO 64105, serves as custodian for assets of the Fund. The custodian performs custodial and fund accounting services. Equinti Trust Company, LLC