0001508655 2023-07-10 2023-07-10 --12-31 0001508655 8-K/A true 2023-07-10 Sixth Street Specialty Lending, Inc. DE 001-36364 27-3380000 2100 McKinney Avenue Suite 1500 Dallas TX 75201 469 621-3001 false false false false Common Stock, par value $0.01 per share TSLX NYSE false This Amendment No. 1 to the Current Report on Form 8-K amends Items 5.02, 5.03 and 9.01 of the Current Report on Form 8-K filed on July 14, 2023 (the “Original Form 8-K”) solely to correct a clerical error in listing the date of P. Emery Covington’s appointment and the as-of date of the bylaws as June 10, 2023, when the correct date was July 10, 2023. No other changes have been made to the Original Form 8-K.