Company: PTY
Filing Date: 2025-09-25
Form Type: 40-17G
Source: 0001193125-25-217116
Chunk: 27

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-09-25
Form: 40-17G
Chunk 27
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 quality and value, whichever is less.

| PF-52903 (08/21) |     | Page 16 of 17 |

| Financial Institution Bond 
 For Investment Companies   |

| d. | Securities |

The value of any loss of Securitiesshall be the average market value of such Securitieson the business day immediately preceding discovery of such loss, provided that the value of any Securitiesreplaced by the Assured, with the consent of the Company and prior to the settlement of any claim for them, shall be the actual market value at the time of replacement. In the case of a loss of interim certificates, warrants, rights or other Securities, the production of which is necessary to the exercise of subscription, conversion, redemption or deposit privileges, the value of them shall be the market value of such privileges immediately preceding their expiration if the loss is not discovered until after their expiration. If no market price is quoted for such Securitiesor for such privileges, the value shall be fixed by agreement of the parties.

| VI. | COMPLIANCE WITH APPLICABLE TRADE SANCTION LAWS |

This Bond does not apply to the extent that trade or economic sanctions law or other similar laws or regulations prohibit the Company from providing insurance.

| PF-52903 (08/21) |     | Page 17 of 17 |

AMEND DEFINITION OF EMPLOYEE (CONSULTANT) ENDORSEMENT

| Named Assured                
 PIMCO FUNDS                  |     |                          |     | Endorsement Number            
 1                             |
| Bond                         
 Number J06915000             |     | Bond Period              
 07-01-2025 to 07-01-2026 |     | Effective Date of Endorsement 
 July 1, 2025                  |
| Issued                       
 By Federal Insurance Company |     |                          |     |                               |

THIS ENDORSEMENT CHANGES THE BOND. PLEASE READ IT CAREFULLY. In consideration of the premium charged, it is agreed that this Bond is amended as follows:

| (1) | The definition of Employee is amended to include a natural person consultant retained by the                                              
 Assured and an employee of such consultant while either is performing consulting services for the Assured pursuant to a written contract. |

| (2) | Each employer of persons as set forth above and the partners, officers, and other employees of such                                                                                                                                  
 employers shall collectively be deemed to be one person for the purpose of the definition of Single Loss and in the event of