Company: TSI
Filing Date: 2025-09-04
Form Type: N-CSRS
Source: 0001193125-25-195336
Chunk: 0

Company: TCW STRATEGIC INCOME FUND INC
Filing Date: 2025-09-04
Form: N-CSRS
Chunk 0
---
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: June 30, 2025

| 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”): |

TCW Strategic Income Fund, Inc.

| 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 2025 semi-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 first half of 2025, shares of TSI rose by 4.2% while the Fund’s net asset value (i.e., returns of the underlying assets) increased by 5.0%. The Fund’s six-monthprice-based return was lower than the NAV-basedreturn, as the discount between NAV and share price rose from -4.4%at the beginning of the period to -5.2%by June 30, 2025. TSI paid dividends of approximately 6 cents per share for each of the final two quarters of 2024, and 6.5 cents in the first two quarters of 2025, as well as a special cash payment of 14.5 cents per share. This represents an annualized rate of approximately 40 cents per share, contributing to a realized 12-monthtrailing yield of approximately 8.0%, as of 6/30/2025