Sixth Street Specialty Lending, Inc. announced the declaration of a fourth quarter 2021 base dividend per share of $0.41 to shareholders of record as of December 15, 2021, payable on January 14, 2022, a third quarter 2021 supplemental dividend per share of $0.07 to shareholders of record as of November 30, 2021, payable on December 31, 2021.