Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 6

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 6
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 $1,000,000,000, through JonesTrading as its agent for the offer and sale of the Common Shares. S-4 Supplement | PIMCO Corporate & Income Opportunity Fund

As of April 30, 2025, in prior “at the market” offerings, the Fund had sold through JonesTrading as its agent pursuant to prior registration statements an aggregate of 103,341,725 Common Shares, representing net proceeds to the Fund of $1,561,997,496 after payment of commissions. The Fund’s outstanding Common Shares are listed on the NYSE under the symbol “PTY,” as will be the Common Shares offered in this Prospectus Supplement and the accompanying Prospectus, subject to notice of issuance. The last reported sale price for the Common Shares on April 30, 2025, was $13.72 per share. Sales of the Common Shares, if any, under this Prospectus Supplement and the accompanying Prospectus may be made in negotiated transactions or transactions that are deemed to be “at the market” as defined in Rule 415 under the Securities Act, including sales made directly on the NYSE or sales made to or through a market maker other than on an exchange, at prices related to the prevailing market prices or at negotiated prices. See “Plan of Distribution” in this Prospectus Supplement. The Fund may not sell any Common Shares through agents, underwriters or dealers without delivery or deemed delivery of a prospectus and a prospectus supplement describing the method and terms of the particular offering of the Fund’s securities. Under the 1940 Act, the Fund may not sell any Common Shares at a price below the current NAV of such Common Shares, exclusive of any distributing commission or discount. Use of Proceeds The net proceeds of this offering will be invested in accordance with the Fund’s investment objective and policies as set forth in the accompanying Prospectus. It is currently anticipated that the Fund will be able to invest substantially all of the net proceeds of this offering in accordance with its investment objective and policies within approximately 30 days of receipt by the Fund, 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 objective and policies, and except to the extent proceeds are held in cash to pay dividends or expenses or for temporary defensive purposes. See “Use of Proceeds” in this Prospectus Supplement. Summary of Fund Expenses The following table is intended to assist investors in understanding the fees and expenses (annualized) that an investor in Common Shares of