Company: TSI
Filing Date: 2025-08-14
Form Type: 40-17G
Source: 0001193125-25-180457
Chunk: 0

Company: TCW STRATEGIC INCOME FUND INC
Filing Date: 2025-08-14
Form: 40-17G
Chunk 0
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August 14, 2025 Securities and Exchange Commission 100 F Street, N.E. Washington, D.C. 20549 Attention: Public Filing Room Re: Rule 17g-1Filing TCW Strategic Income Fund, Inc. (File No. 811-04980) (the “Fund”) Dear Sir or Madam: As required by Rule 17g-1under the Investment Company Act of 1940 (the “1940 Act”), I enclose the following on behalf of the Fund:

| (1) | Copy of the joint fidelity bond; |

| (2) | Certificate of the Secretary of the Fund that contains a copy of the resolutions from the June 2, 2025                                                                                                                                
 meeting of the Fund’s Board of Directors, at which a majority of Directors who are not considered to be “interested persons” within the meaning of the 1940 Act approved the amount, allocation, type, form and coverage of the joint 
 fidelity bond; and                                                                                                                                                                                                                    |

| (3) | Copy of the amended and restated joint insured bond agreement. |

The premium has been paid for the period June 30, 2025 to June 30, 2026. Had the Fund obtained a separate fidelity bond, the amount of coverage required would have been $600,000.

| Very truly yours,            |
| /s/ Peter                    
 Davidson                     |
| Peter Davidson               
 Vice President and Secretary |

Enclosures

| Financial Institution Bond 
 For Investment Companies   |

| DECLARATIONS                                                         |     | FEDERAL INSURANCE COMPANY                                                                    |
| Name of Assured:                                                     
 TCW METROPOLITAN WEST FUNDS; TCW STRATEGIC INCOME FUND,INC.; AND TCW 
 FUNDS, INC.   Address of Assured:                                    
 515 S. FLOWER STREET                                                 
 LOS ANGELES, CA 90071                                                |     | Incorporated under the laws of Indiana, a stock insurance company, herein called the Company 
 One American Square 202 N Illinois Street,                                                   
 Suite 2600                                                                                   
 Indianapolis, IN 46282                                                                       
 Bond Number: J0600961A                                                                       |

| Item 1. |     | Bond Period:                                          |     | From:                                               
 To:                                                 |     | June 30, 2025 
 June 30, 2026 |
|:--------|:----|:------------------------------------------------------|:----|:----------------------------------------------------|:----|:--------------|