Company: PTY
Filing Date: 2025-09-25
Form Type: 40-17G
Source: 0001193125-25-217116
Chunk: 58

Company: PIMCO CORPORATE & INCOME OPPORTUNITY FUND
Filing Date: 2025-09-25
Form: 40-17G
Chunk 58
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 RIDERS ATTACHED AT ISSUANCE: |
|         |     | 471-CA 471-101 471-801 471-802               |

IN WITNESS WHEREOF, the Insurer has caused this Bond to be signed on this Declarations Page by its President, a Secretary and a duly authorized representative of the Insurer.

| USSIC 470 (07/2011) |
| Page 1 of 1         |

U.S. TREASURY DEPARTMENT’S OFFICE OF FOREIGN ASSETS CONTROL (“OFAC”) ADVISORY NOTICE TO POLICYHOLDERS No coverage is provided by this Policyholder Notice nor can it be construed to replace any provisions of your policy. You should read your policy and review your Declarations page for complete information on the coverages you are provided. This Notice provides information concerning possible impact on your insurance coverage due to directives issued by OFAC. Please read this Notice carefully. The Office of Foreign Assets Control (OFAC) administers and enforces sanctions policy, based on Presidential declarations of “national emergency”. OFAC has identified and listed numerous:

| • |     | Foreign agents; |

| • |     | Front organizations; |

| • |     | Terrorists; |

| • |     | Terrorist organizations; and |

| • |     | Narcotics traffickers; |

as “Specially Designated Nationals and Blocked Persons”. This list can be located on the United States Treasury’s web site - http//www.treas.gov/ofac. In accordance with OFAC regulations, if it is determined that you or any other insured, or any person or entity claiming the benefits of this insurance has violated U.S. sanctions law or is a Specially Designated National and Blocked Person, as identified by OFAC, this insurance will be considered a blocked or frozen contract and all provisions of this insurance are immediately subject to OFAC. When an insurance policy is considered to be such a blocked or frozen contract, no payments nor premium refunds may be made without authorization from OFAC. Other limitations on the premiums and payments also apply.

| IL P 001 01 04 |     | Reprinted, in part, with permission of 
 ISO Properties, Inc.                   |     | Page 1 of 1 |

U.S. SPECIALTY INSURANCE COMPANY EXCESS FINANCIAL INSTITUTION BOND INSURING AGREEMENT:In consideration of the payment of the premium, and in reliance upon all statements made and information furnished to the Insurer and the issuers