Company: PTY
Filing Date: 2025-03-03
Form Type: POS EX
Source: 0001193125-25-042988
Chunk: 9

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-03-03
Form: POS EX
Chunk 9
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 February 28, 2025 |
| Alan Rappaport*     |     |                                           |     |                   |

| Alan Rappaport       |     | Trustee |     | February 28, 2025 |
|:---------------------|:----|:--------|:----|:------------------|
| E. Grace Vandecruze* |     |         |     |                   |
| E. Grace Vandecruze  |     | Trustee |     | February 28, 2025 |

| *By: |     | /s/ David C. Sullivan                 |
|      |     | David C. Sullivan as attorney-in-fact |

| * | Pursuant to power of attorney. |

### EXHIBIT LIST
| a.16 
 a.17 |     | Notice of Change of Trustees May 10, 2024.                                
 Notice of Change of Trustees December 31, 2024.                           |
|:-----|:----|:--------------------------------------------------------------------------|
| b.1  |     | Fourth Amended and Restated Bylaws of Registrant dated November 11, 2024. |