Company: TSI
Filing Date: 2025-03-05
Form Type: N-CSR
Source: 0001193125-25-046168
Chunk: 0

Company: TCW STRATEGIC INCOME FUND INC
Filing Date: 2025-03-05
Form: N-CSR
Chunk 0
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UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM N-CSR CERTIFIED SHAREHOLDER REPORT OF REGISTERED MANAGEMENT INVESTMENT COMPANIES Investment Company Act file number: 811-04980 TCW Strategic Income Fund, Inc. (Exact name of registrant as specified in charter) 515 South Flower Street, Los Angeles, CA 90071 (Address of principal executive offices) Peter Davidson, Esq. Vice President and Secretary 515 South Flower Street Los Angeles, CA 90071 (Name and address of agent for service) Registrant’s telephone number, including area code: (213) 244-0000 Date of fiscal year end: December 31 Date of reporting period: December 31, 2024

| Item 1. | Reports to Stockholders. |

| (a) | The following is a copy of the report transmitted to shareholders pursuant to Rule30e-1under the Investment Company Act of 1940, as amended (the “1940 Act”): |

| To Our Valued Shareholders |

| Megan McClellan                           
 President and Principal Executive Officer |

To the shareholders of the TCW Strategic Income Fund: Executive Summary TCW is pleased to present the 2024 annual report for the TCW Strategic Income Fund (“TSI” or the “Fund”). TSI is a multi-asset class closed-endfund managed by TCW Investment Management Company and is listed on the New York Stock Exchange under the ticker TSI. For the year, shares of TSI rose by 13.4% while the Fund’s net asset value (i.e., returns of the underlying assets) increased by 7.3%. The Fund’s twelve-month price-based return was higher than the NAV-basedreturn, as the discount between NAV and share price fell from -9.1%at the beginning of the period to -4.4%by December 31, 2024. Over the past four quarters, the Fund paid dividends of approximately six cents per share each quarter, as well as a special cash payment of 14.5 cents per share. This represents an annualized rate of approximately 39 cents per share, contributing to a realized 12-monthtrailing yield of approximately 8.0% as of 12/31/2024. As yield is a function of a number of parameters, the go-forwardyield of TSI will likely differ from the trailing figure. Fund Performance (%)

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