{"transactions":[{"id":759484,"issuer":{"id":4591,"kind":"organization","name":"Sixth Street Specialty Lending, Inc."},"owners":[{"id":43346,"kind":"person","name":"Stanley Robert J.","position":1,"cik":"0001673990","reported_name":"Stanley Robert J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"CEO"}}],"security":"Common Stock","published_at":"2026-05-29T20:30:15.000Z","date":"2026-05-28","kind":"other","planned":false,"acquired":true,"shares":20000,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Sixth Street Specialty Lending Advisers, LLC (\"Advisers\") directly holds 2,716,977 shares of common stock, $0.01 par value per share (the \"Common Stock\") of Sixth Street Specialty Lending, Inc. (the \"Issuer\"), including shares of Common Stock indirectly beneficially owned by the Reporting Person (through his limited partnership interest in TSL Equity Partners, L.P. (\"TSL\"), which is a member of Sixth Street Specialty Lending Advisers Holdings, LLC, which in turn is a member of Advisers). This transaction reflects the acquisition by a trust for the benefit of certain of the Reporting Person's family members of limited partnership interests in TSL from an existing limited partner. The number of shares of Issuer Common Stock reported as acquired reflects the Reporting Person's indirect beneficial ownership in the shares acquired through such limited partnership interest in TSL. In connection with the acquisition by the trust, the trust paid the transferors an aggregate of $344,200."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Sixth Street Specialty Lending Advisers, LLC (\"Advisers\") directly holds 2,716,977 shares of common stock, $0.01 par value per share (the \"Common Stock\") of Sixth Street Specialty Lending, Inc. (the \"Issuer\"), including shares of Common Stock indirectly beneficially owned by the Reporting Person (through his limited partnership interest in TSL Equity Partners, L.P. (\"TSL\"), which is a member of Sixth Street Specialty Lending Advisers Holdings, LLC, which in turn is a member of Advisers). This transaction reflects the acquisition by a trust for the benefit of certain of the Reporting Person's family members of limited partnership interests in TSL from an existing limited partner. The number of shares of Issuer Common Stock reported as acquired reflects the Reporting Person's indirect beneficial ownership in the shares acquired through such limited partnership interest in TSL. In connection with the acquisition by the trust, the trust paid the transferors an aggregate of $344,200."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes Reporting Person's indirect beneficial ownership of 3,907.27 Shares of the Issuer that Reporting Person previously reported as directly owned. Shares are held directly by Advisers."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"Sixth Street Specialty Lending Advisers, LLC (\"Advisers\") directly holds 2,716,977 shares of common stock, $0.01 par value per share (the \"Common Stock\") of Sixth Street Specialty Lending, Inc. (the \"Issuer\"), including shares of Common Stock indirectly beneficially owned by the Reporting Person (through his limited partnership interest in TSL Equity Partners, L.P. (\"TSL\"), which is a member of Sixth Street Specialty Lending Advisers Holdings, LLC, which in turn is a member of Advisers). This transaction reflects the acquisition by a trust for the benefit of certain of the Reporting Person's family members of limited partnership interests in TSL from an existing limited partner. The number of shares of Issuer Common Stock reported as acquired reflects the Reporting Person's indirect beneficial ownership in the shares acquired through such limited partnership interest in TSL. In connection with the acquisition by the trust, the trust paid the transferors an aggregate of $344,200."}],"balance_after":23907.27,"source":{"system":"sec-edgar","filing":"0001193125-26-248443","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1673990/000119312526248443/ownership.xml","form_type":"4"}},{"id":993273,"issuer":{"id":4591,"kind":"organization","name":"Sixth Street Specialty Lending, Inc."},"owners":[{"id":43346,"kind":"person","name":"Stanley Robert J.","position":1,"cik":"0001673990","reported_name":"Stanley Robert J.","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Co-CEO"}}],"security":"Common Stock","published_at":"2025-11-20T21:30:07.000Z","date":"2025-11-18","kind":"purchase","planned":false,"acquired":true,"shares":10000,"price":20.85,"value":208500.0,"ownership":{"direct":true},"balance_after":24907.27,"source":{"system":"sec-edgar","filing":"0001193125-25-289871","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1673990/000119312525289871/ownership.xml","form_type":"4"}},{"id":3203713,"issuer":{"id":4591,"kind":"organization","name":"Sixth Street Specialty Lending, Inc."},"owners":[{"id":43346,"kind":"person","name":"Stanley Robert J.","position":1,"cik":"0001673990","reported_name":"Stanley Robert J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2020-03-18T20:10:20.000Z","date":"2020-03-02","kind":"purchase","acquired":true,"shares":11000,"price":21.53,"value":236830.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $21.49 to $21.56, inclusive. The reporting person undertakes to provide to TPG Specialty Lending, Inc. (the \"Issuer\"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above."}],"balance_after":14907.27,"source":{"system":"sec-edgar","filing":"0001387131-20-002998","document":"stanley-form4a_030220.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1673990/000138713120002998/stanley-form4a_030220.xml","form_type":"4/A","original_submission_date":"2020-03-04"}},{"id":3229656,"issuer":{"id":4591,"kind":"organization","name":"Sixth Street Specialty Lending, Inc."},"owners":[{"id":43346,"kind":"person","name":"Stanley Robert J.","position":1,"cik":"0001673990","reported_name":"Stanley Robert J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2020-03-04T21:54:55.000Z","date":"2020-03-02","kind":"purchase","acquired":true,"shares":11000,"price":21.53,"value":236830.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $21.49 to $21.56, inclusive. The reporting person undertakes to provide to TPG Specialty Lending, Inc. (the \"Issuer\"), any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares purchased at each separate price within the range set forth above."}],"balance_after":14907.27,"source":{"system":"sec-edgar","filing":"0001387131-20-002545","document":"stanley-form4_021320.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1673990/000138713120002545/stanley-form4_021320.xml","form_type":"4"}},{"id":4018088,"issuer":{"id":4591,"kind":"organization","name":"Sixth Street Specialty Lending, Inc."},"owners":[{"id":43346,"kind":"person","name":"Stanley Robert J.","position":1,"cik":"0001673990","reported_name":"Stanley Robert J.","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President"}}],"security":"Common Stock","published_at":"2018-03-05T21:14:45.000Z","date":"2018-03-01","kind":"purchase","acquired":true,"shares":1119.5,"price":18.28,"value":20464.46,"ownership":{"direct":false,"nature":"See Explanation of Responses"},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"TSL Advisers, LLC (\"TSL Advisers\") directly holds 2,732,307 shares of Common Stock of TPG Specialty Lending, Inc. (the \"Issuer\"), including 3,907.27 shares of Common Stock of the Issuer indirectly beneficially owned by Mr. Stanley (through his limited partnership interest in TSL Equity Partners, L.P., which is a member of TSL Advisers)."}],"balance_after":3907.27,"source":{"system":"sec-edgar","filing":"0000903423-18-000142","document":"stanley.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1673990/000090342318000142/stanley.xml","form_type":"4"}}]}