Company: PTY
Filing Date: 2025-03-12
Form Type: DEF 14A
Source: 0001193125-25-052894
Chunk: 4

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-03-12
Form: DEF 14A
Chunk 4
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 Sarah E. Cogan      |     |              | ✓ |
| Re-electionof Deborah A. DeCotis  |     |              | ✓ |
| Interested Trustees/Nominees      |     |              |   |
| Re-electionof Libby D. Cantrill** |     |              | ✓ |
| Election of David Flattum**       |     |              | ✓ |
| PDO                               |     |              |   |
| Independent Trustee/Nominee*      |     |              |   |
| Re-electionof Deborah A. DeCotis  |     |              | ✓ |
| Interested Trustee/Nominee        |     |              |   |
| Election of David Flattum**       |     |              | ✓ |
| PTY                               |     |              |   |
| Independent Trustee/Nominee*      |     |              |   |
| Re-electionof Alan Rappaport      |     |              | ✓ |
| Interested Trustees/Nominees      |     |              |   |
| Re-electionof Libby D. Cantrill** |     |              | ✓ |
| Election of David Flattum**       |     |              | ✓ |

| * | “Independent Trustees” or “Independent Nominees” are those Trustees or nominees who are not “interested persons,” as defined in the Investment Company Act of 1940, as amended (the “1940 Act”), of each Fund. |

| ** | Ms. Cantrill and Mr. Flattum are “interested persons” of each Fund, as defined in Section 2(a)(19) of the 1940 Act (“Interested Trustee”), due to their affiliation with PIMCO and its affiliates. They do not receive compensation from the Funds for their services as Trustees. |

4 You may vote by mail by returning a properly executed proxy card, by internet by going to the website listed on the proxy card, by telephone using the toll-free number listed on the proxy card, or in person by attending the Meeting. Shares represented by duly executed and timely delivered proxies will be voted as instructed on the proxy. If you execute and mail the enclosed proxy and no choice is indicated for the election or re-electionof Trustees listed in the attached Notice, your proxy will be voted in favor of the election or re-election,as applicable, of all nominees. At any time before it has been voted, your proxy may be revoked in one of the following ways: (i