Company: PTY
Filing Date: 2025-03-12
Form Type: DEF 14A
Source: 0001193125-25-052894
Chunk: 55

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-03-12
Form: DEF 14A
Chunk 55
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 Fund are also available atpimco.com/closedendfunds.

**PIMCO Corporate & Income Opportunity Fund – Common Shares**

| PROXY CARD |

| YOUR SIGNATURE IS REQUIRED FOR YOUR VOTE TO BE COUNTED.                                                                                                                                                                                                                                                                                                           |                                           |                                             |
| Please sign exactly as your name(s) appear(s) on the proxy card. Joint owners should each sign personally. Trustees and other fiduciaries should indicate the capacity in which they sign, and where more than one name appears, a majority must sign. If a corporation, the signature should be that of an authorized officer who should state his or her title. |                                           | SIGNATURE (AND TITLE IF APPLICABLE)    DATE |
|                                                                                                                                                                                                                                                                                                                                                                   | SIGNATURE (IF HELD JOINTLY)          DATE |                                             |

TO VOTE, MARK ONE CIRCLE IN BLUE OR BLACK INK. Example: ●

|                                                                                                                                                                                                                        |     | FOR |     | WITHHOLD |
| PROPOSAL                                                                                                                                                                                                               |     |     |     |          |
| A. Election of Trustees — The Board of Trustees urges you to vote FOR the election of the Nominees.                                                                                                                    |     |     |     |          |
| 1.  Nominees:                                                                                                                                                                                                          |     |     |     |          |
| (01) Alan Rappaport                                                                                                                                                                                                    |     |     |     |          |
| (02) Libby D. Cantrill                                                                                                                                                                                                 |     |     |     |          |
| (03) David Flattum                                                                                                                                                                                                     |     |     |     |          |
| 2.  To vote and otherwise represent the undersigned on any other business that may properly come before the Annual Meeting or any adjournment(s) or postponement(s) thereof, in the discretion of the proxy holder(s). |     |     |     |          |
| B. Non-Voting Items                                                                                                                                                                                                    |     |     |     |          |

| Change of Address – Please print new address below. |     | Comments – Please print your comments below. |

<div align='center'>**You can vote on the internet, by telephone or by mail. Please see the reverse side for instructions.**</div>

**PLEASE VOTE ALL YOUR BALLOTS IF YOU RECEIVED MORE THAN ONE BALLOT DUE TO