Company: PTY
Filing Date: 2025-09-25
Form Type: 40-17G
Source: 0001193125-25-217116
Chunk: 69

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-09-25
Form: 40-17G
Chunk 69
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 Insurance, or (c)any change to the Underlying Insuranceby rewrite, endorsement or otherwise. Written notice to the Companyshall be given to RLI Insurance Company, Peoria, IL.

| G. | Ateration |

No change in, modification of, or assignment of interest under this policy shall be effective except when made by a written endorsement to this policy which is signed by an authorized representative of the Company.

| H. | Policy Termination |

This policy shall terminate at the earliest of the following times:

| 1. | the effective date of termination specified in written prior notice by the Named Insured to the 
 Company,                                                                                        |

| 2. | sixty (60) days after receipt by the Named Insured of a written notice of termination from the 
 Company,                                                                                       |

| 3. | upon expiration of the Policy Period as set forth in Item 4. of the Declarations, |

| 4. | ten (10) days after receipt by the Named Insured of a written notice of termination from the 
 Company for failure to pay a premium when due,                                               |

| 5. | upon the appointment of a trustee, receiver, or liquidator of any Insured or the taking over of any Insured 
 by State or Federal officials,                                                                              |

| 6. | upon the exhaustion of the Aggregate Limit of Liability, |

| 7. | at such time as may be agreed upon the Company and the Named Insured. |

The Companyshall refund the unearned premium computed at customary short rates if the policy is terminated by the Named Insuredpursuant to 1.above. Under any circumstances other than expiration of the Policy Periodor exhaustion of the Aggregate Limit of Liability, the refund shall be computed pro rata.

| FICP 100 CA (08/08) |     | Page 3 of 3 |

| Policy Number: BND0103383 |     | RLI Insurance Company |

SIGNATURE PAGE In Witness Whereof, we have caused this policy to be executed and attested, and, if required by state law, this policy shall not be valid unless countersigned by our authorized representative.

| Secretary |     | President |

ILF 0001 (04/22)

Policy Number: BND0103383 THIS ENDORSEMENT/RIDER CHANGES THE POLICY. PLEASE READ IT CAREFULLY. APPLICABLE FORMS & ENDORSEMENTS/RIDERS FORMS AND ENDORSEMENTS/RIDERS LISTED