Sixth Street Specialty Lending, Inc.

Sixth Street Specialty Lending is a specialty finance company focused on lending to middle-market companies. The Company seeks to generate current income primarily in U.S.-domiciled middle-market companies through direct originations of senior secured loans and, to a lesser extent, originations of mezzanine loans and investments in corporate bonds and equity securities. The Company has elected to be regulated as a business development company, or a BDC, under the Investment Company Act of 1940 and the rules and regulations promulgated thereunder. The Company is externally managed by Sixth Street Specialty Lending Advisers, LLC, an affiliate of Sixth Street and a Securities and Exchange Commission (“SEC”) registered investment adviser. The Company leverages the deep investment, sector, and operating resources of Sixth Street, a global investment firm with over $135 billion in assets under management and committed capital. For more information, visit the Company’s website at https://sixthstreetspecialtylending.com.

Current securities

1. Results of Operations and Financial Condition · Regulation FD DisclosureAug 4, 2026
2. Submission of Matters to a Vote of Security HoldersJun 18, 2026
3. Submission of Matters to a Vote of Security HoldersMay 22, 2026
4. DEFR14A filingMay 15, 2026
5. DEFR14A filingMay 15, 2026