Company: PTY
Filing Date: 2025-06-06
Form Type: 424B5
Source: 0001193125-25-137029
Chunk: 232

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-06-06
Form: 424B5
Chunk 232
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 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 (such as the ARPS) are permitted to 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 following table shows, for each class of authorized securities of the Fund, the amount of (i) shares authorized and (ii) shares outstanding, each as of August 31, 2023. 90 Base Prospectus | PIMCO Corporate & Income Opportunity Fund

Base Prospectus

| Title ofClass        | AmountAuthorized | Amount Held by the Fund or for its Account | AmountOutstanding |
| CommonShares         |        Unlimited | -                                          |       143,115,790 |
| PreferredShares—ARPS |                  | -                                          |                   |
| Class M              |            4,520 | -                                          |             1,748 |
| Class T              |            4,520 | -                                          |             1,596 |
| Class W              |            4,520 | -                                          |             1,634 |
| Class TH             |            4,520 | -                                          |             1,786 |
| Class F              |            4,520 | -                                          |             1,742 |

The Common Shares of the Fund commenced trading on the NYSE in December 2002, under the trading or “ticker” symbol “PTY.” As of the close of trading on the NYSE on August 31, 2023, the NAV per Common Share was $10.72, and the closing price per Common Share on the NYSE was $14.15. Common Shareholders are entitled to share equally in dividends declared by the Board to Common Shareholders and in the net assets of the Fund available for distribution to Common Shareholders after payment of the preferential amounts payable to holders of Preferred Shares and any other outstanding preferred shares of beneficial interest. See “Preferred Shares