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Pursuant to the terms of the agreement governing the outstanding restricted stock units held by the filer, the filer received certain additional restricted stock units as a result of this cash dividend.  These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":20340,"source":{"system":"sec-edgar","filing":"0001225208-26-007365","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520826007365/doc4.xml","form_type":"4"}},{"id":760767,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2026-05-28T20:16:22.000Z","date":"2026-05-27","kind":"sale","planned":false,"acquired":false,"shares":20744,"price":29.8286,"value":618764.4784,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the weighted average sales price for the price increments ranging from $29.67 to $29.96.  The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":20163,"source":{"system":"sec-edgar","filing":"0001225208-26-005625","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520826005625/doc4.xml","form_type":"4"}},{"id":760766,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2026-05-28T20:16:22.000Z","date":"2026-05-27","kind":"tax_withholding","planned":false,"acquired":false,"shares":105,"price":29.63,"value":3111.15,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the surrender of common stock to the Company to cover withholding taxes upon the vesting of restricted stock units and related dividends."}],"balance_after":40907,"source":{"system":"sec-edgar","filing":"0001225208-26-005625","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520826005625/doc4.xml","form_type":"4"}},{"id":760765,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2026-05-28T20:16:22.000Z","date":"2026-05-27","kind":"grant","planned":false,"acquired":true,"shares":408,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On May 27, 2026, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":50741,"source":{"system":"sec-edgar","filing":"0001225208-26-002864","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520826002864/doc4.xml","form_type":"4"}},{"id":989269,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2025-11-25T21:08:26.000Z","date":"2025-11-21","kind":"grant","planned":false,"acquired":true,"shares":481,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 21, 2025, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":50230,"source":{"system":"sec-edgar","filing":"0001225208-25-009436","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520825009436/doc4.xml","form_type":"4"}},{"id":1054025,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2025-08-28T20:10:37.000Z","date":"2025-08-27","kind":"grant","planned":false,"acquired":true,"shares":450,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 27, 2025, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":49749,"source":{"system":"sec-edgar","filing":"0001225208-25-007519","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520825007519/doc4.xml","form_type":"4"}},{"id":1131065,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2025-05-29T20:15:37.000Z","date":"2025-05-28","kind":"tax_withholding","planned":false,"acquired":false,"shares":104,"price":22.26,"value":2315.04,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the surrender of common stock to the Company to cover withholding taxes upon the vesting of dividends."}],"balance_after":49299,"source":{"system":"sec-edgar","filing":"0001225208-25-005519","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520825005519/doc4.xml","form_type":"4"}},{"id":1131064,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2025-05-29T20:15:37.000Z","date":"2025-05-28","kind":"grant","planned":false,"acquired":true,"shares":734,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"On May 28, 2025, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":49403,"source":{"system":"sec-edgar","filing":"0001225208-25-005519","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520825005519/doc4.xml","form_type":"4"}},{"id":1131063,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2025-05-29T20:15:37.000Z","date":"2025-05-27","kind":"tax_withholding","planned":false,"acquired":false,"shares":8010,"price":21.84,"value":174938.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the surrender of common stock to the Company to cover withholding taxes upon the vesting of restricted stock units and related dividends."}],"balance_after":48669,"source":{"system":"sec-edgar","filing":"0001225208-25-005519","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520825005519/doc4.xml","form_type":"4"}},{"id":1244173,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2025-02-26T21:07:54.000Z","date":"2025-02-25","kind":"grant","planned":false,"acquired":true,"shares":669,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 25, 2025, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":56679,"source":{"system":"sec-edgar","filing":"0001225208-25-002459","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520825002459/doc4.xml","form_type":"4"}},{"id":1353280,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-11-25T21:05:25.000Z","date":"2024-11-21","kind":"grant","planned":false,"acquired":true,"shares":566,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 21, 2024, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":56010,"source":{"system":"sec-edgar","filing":"0001225208-24-010164","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824010164/doc4.xml","form_type":"4"}},{"id":1410326,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-09-12T00:42:10.000Z","date":"2024-09-09","kind":"grant","planned":false,"acquired":true,"shares":268379,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."}],"balance_after":268379,"derivative":{"exercise_price":63.6,"exercise_date":"2024-09-09","expiration_date":"2030-12-08","underlying":"Common Stock","underlying_shares":268379},"source":{"system":"sec-edgar","filing":"0001225208-24-008614","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824008614/doc4.xml","form_type":"4"}},{"id":1410325,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-09-12T00:42:10.000Z","date":"2024-09-09","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":10982764,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  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Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"Approximately one-third of options will vest on each of 5/26/2025, 5/25/2026 and 5/24/2027."}],"balance_after":1098276,"derivative":{"exercise_price":27.4,"exercise_date":"2025-05-26","expiration_date":"2034-05-29","underlying":"Common Stock","underlying_shares":1098276},"source":{"system":"sec-edgar","filing":"0001225208-24-008614","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824008614/doc4.xml","form_type":"4"}},{"id":1410323,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-09-12T00:42:10.000Z","date":"2024-09-09","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":2683790,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Disposition of options to acquire shares of common stock of Old Sirius XM outstanding prior to the closing of the Merger and the acquisition of options to acquire shares of common stock of New Sirius XM in connection with the Merger.  Each ten (10) options to acquire shares of common stock of Old Sirius XM resulted in the issuance of one (1) option to acquire shares of common stock of New Sirius XM, rounded down to the nearest whole option."}],"balance_after":0,"derivative":{"exercise_price":6.36,"exercise_date":"2023-05-24","expiration_date":"2030-12-08","underlying":"Common Stock","underlying_shares":2683790},"source":{"system":"sec-edgar","filing":"0001225208-24-008614","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824008614/doc4.xml","form_type":"4"}},{"id":1410322,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-09-12T00:42:10.000Z","date":"2024-09-09","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":993501,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Represents disposition of common stock of Sirius XM Holdings Inc. (\"Old Sirius XM\") and acquisition of common stock of Liberty Sirius XM Holdings Inc. (\"New Sirius XM\") at an exchange rate of ten (10) shares of Old Sirius XM common stock to one (1) New Sirius XM share of common stock, rounded down to the nearest whole share, in connection with the September 9, 2024 merger of Radio Merger Sub, LLC with and into Old Sirius XM, with Old Sirius XM continuing as the surviving company (the \"Merger\") pursuant to the Agreement and Plan of Merger, dated as of December 11, 2023, as amended (the \"Merger Agreement\").  Includes the disposition of restricted stock units associated with shares of common stock of Old Sirius XM and acquisition of restricted stock units associated with shares of common stock of New Sirius XM in connection with the Merger.  Following the closing of the Merger, New Sirius XM changed its name to Sirius XM Holdings Inc and Old Sirius XM changed its name to Sirius XM Inc."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents disposition of common stock of Sirius XM Holdings Inc. (\"Old Sirius XM\") and acquisition of common stock of Liberty Sirius XM Holdings Inc. (\"New Sirius XM\") at an exchange rate of ten (10) shares of Old Sirius XM common stock to one (1) New Sirius XM share of common stock, rounded down to the nearest whole share, in connection with the September 9, 2024 merger of Radio Merger Sub, LLC with and into Old Sirius XM, with Old Sirius XM continuing as the surviving company (the \"Merger\") pursuant to the Agreement and Plan of Merger, dated as of December 11, 2023, as amended (the \"Merger Agreement\").  Includes the disposition of restricted stock units associated with shares of common stock of Old Sirius XM and acquisition of restricted stock units associated with shares of common stock of New Sirius XM in connection with the Merger.  Following the closing of the Merger, New Sirius XM changed its name to Sirius XM Holdings Inc and Old Sirius XM changed its name to Sirius XM Inc."},{"field":"shares","element":"transactionShares","label":"F2","text":"Mr. Greenstein was subject to the filing requirements under Section 16(a) of the Securities Exchange Act of 1934 while serving as an officer of Old Sirius XM since 2004.  In the course of preparing this Form 4, the Issuer was unable to reconcile the reports filed by Mr. Greenstein under Section 16(a) with respect to Old Sirius XM with the information, including bank and brokerage account statements, provided by Mr. Greenstein.  The Issuer believes that Mr. Greenstein's ownership in new Old Sirius XM, as reported under Section 16(a), may have been overstated by 43,906 shares of common stock.  As a result, Mr. Greenstein's reported ownership has been adjusted to reflect this discrepancy."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents disposition of common stock of Sirius XM Holdings Inc. (\"Old Sirius XM\") and acquisition of common stock of Liberty Sirius XM Holdings Inc. (\"New Sirius XM\") at an exchange rate of ten (10) shares of Old Sirius XM common stock to one (1) New Sirius XM share of common stock, rounded down to the nearest whole share, in connection with the September 9, 2024 merger of Radio Merger Sub, LLC with and into Old Sirius XM, with Old Sirius XM continuing as the surviving company (the \"Merger\") pursuant to the Agreement and Plan of Merger, dated as of December 11, 2023, as amended (the \"Merger Agreement\").  Includes the disposition of restricted stock units associated with shares of common stock of Old Sirius XM and acquisition of restricted stock units associated with shares of common stock of New Sirius XM in connection with the Merger.  Following the closing of the Merger, New Sirius XM changed its name to Sirius XM Holdings Inc and Old Sirius XM changed its name to Sirius XM Inc."}],"balance_after":55444,"source":{"system":"sec-edgar","filing":"0001225208-24-008614","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824008614/doc4.xml","form_type":"4"}},{"id":1410321,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-09-12T00:42:10.000Z","date":"2024-09-09","kind":"grant","planned":false,"acquired":true,"shares":55444,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"Represents disposition of common stock of Sirius XM Holdings Inc. (\"Old Sirius XM\") and acquisition of common stock of Liberty Sirius XM Holdings Inc. (\"New Sirius XM\") at an exchange rate of ten (10) shares of Old Sirius XM common stock to one (1) New Sirius XM share of common stock, rounded down to the nearest whole share, in connection with the September 9, 2024 merger of Radio Merger Sub, LLC with and into Old Sirius XM, with Old Sirius XM continuing as the surviving company (the \"Merger\") pursuant to the Agreement and Plan of Merger, dated as of December 11, 2023, as amended (the \"Merger Agreement\").  Includes the disposition of restricted stock units associated with shares of common stock of Old Sirius XM and acquisition of restricted stock units associated with shares of common stock of New Sirius XM in connection with the Merger.  Following the closing of the Merger, New Sirius XM changed its name to Sirius XM Holdings Inc and Old Sirius XM changed its name to Sirius XM Inc."},{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents disposition of common stock of Sirius XM Holdings Inc. (\"Old Sirius XM\") and acquisition of common stock of Liberty Sirius XM Holdings Inc. (\"New Sirius XM\") at an exchange rate of ten (10) shares of Old Sirius XM common stock to one (1) New Sirius XM share of common stock, rounded down to the nearest whole share, in connection with the September 9, 2024 merger of Radio Merger Sub, LLC with and into Old Sirius XM, with Old Sirius XM continuing as the surviving company (the \"Merger\") pursuant to the Agreement and Plan of Merger, dated as of December 11, 2023, as amended (the \"Merger Agreement\").  Includes the disposition of restricted stock units associated with shares of common stock of Old Sirius XM and acquisition of restricted stock units associated with shares of common stock of New Sirius XM in connection with the Merger.  Following the closing of the Merger, New Sirius XM changed its name to Sirius XM Holdings Inc and Old Sirius XM changed its name to Sirius XM Inc."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents disposition of common stock of Sirius XM Holdings Inc. (\"Old Sirius XM\") and acquisition of common stock of Liberty Sirius XM Holdings Inc. 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Following the closing of the Merger, New Sirius XM changed its name to Sirius XM Holdings Inc and Old Sirius XM changed its name to Sirius XM Inc."}],"balance_after":1048945,"source":{"system":"sec-edgar","filing":"0001225208-24-008614","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824008614/doc4.xml","form_type":"4"}},{"id":1421181,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-08-28T20:07:35.000Z","date":"2024-08-26","kind":"grant","planned":false,"acquired":true,"shares":4170,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 26, 2024, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":993501,"source":{"system":"sec-edgar","filing":"0001225208-24-008264","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824008264/doc4.xml","form_type":"4"}},{"id":1437381,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-08-09T21:05:37.000Z","date":"2024-08-08","kind":"sale","planned":false,"acquired":false,"shares":1447238,"price":3.1636,"value":4578482.1368,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sales price for the price increments ranging from $3.125 to $3.20.  The Reporting Person undertakes to provide, upon request by the Securities and Exchange Commission staff, the Issuer or a security holder of the Issuer, full information regarding the number of shares sold at each separate price."}],"balance_after":989331,"source":{"system":"sec-edgar","filing":"0001225208-24-007960","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824007960/doc4.xml","form_type":"4"}},{"id":1498413,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2024-05-30T22:54:03.000Z","date":"2024-05-29","kind":"grant","planned":false,"acquired":true,"shares":10982764,"price":2.74,"value":30092773.36,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Approximately one-third of options will vest on each of 5/26/25; 5/25/26 and 5/24/27."}],"balance_after":10982764,"derivative":{"exercise_price":2.74,"exercise_date":"2025-05-26","expiration_date":"2034-05-29","underlying":"Common Stock","underlying_shares":10982764},"source":{"system":"sec-edgar","filing":"0001225208-24-006450","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824006450/doc4.xml","form_type":"4"}},{"id":1498412,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-05-30T22:54:03.000Z","date":"2024-05-29","kind":"tax_withholding","planned":false,"acquired":false,"shares":3004,"price":2.76,"value":8291.04,"ownership":{"direct":true},"balance_after":2436569,"source":{"system":"sec-edgar","filing":"0001225208-24-006450","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824006450/doc4.xml","form_type":"4"}},{"id":1498411,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-05-30T22:54:03.000Z","date":"2024-05-29","kind":"grant","planned":false,"acquired":true,"shares":550275,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"One-third of restricted stock units will vest on each of 5/26/25; 5/25/26 and 5/24/27."}],"balance_after":2439573,"source":{"system":"sec-edgar","filing":"0001225208-24-006450","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824006450/doc4.xml","form_type":"4"}},{"id":1498410,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-05-30T22:54:03.000Z","date":"2024-05-29","kind":"grant","planned":false,"acquired":true,"shares":6932,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 29, 2024, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":1889298,"source":{"system":"sec-edgar","filing":"0001225208-24-006450","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824006450/doc4.xml","form_type":"4"}},{"id":1502597,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-05-24T20:21:11.000Z","date":"2024-05-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":350257,"price":2.73,"value":956201.61,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents the surrender of common stock to the Company to cover withholding taxes upon the vesting of restricted stock units and related dividends."}],"balance_after":1882366,"source":{"system":"sec-edgar","filing":"0001225208-24-006354","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824006354/doc4.xml","form_type":"4"}},{"id":1620520,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-02-27T02:11:15.000Z","date":"2024-02-23","kind":"grant","planned":false,"acquired":true,"shares":4083,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 23, 2024, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":2232623,"source":{"system":"sec-edgar","filing":"0001225208-24-002998","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824002998/doc4.xml","form_type":"4"}},{"id":1662769,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2024-02-02T23:20:48.000Z","date":"2024-02-01","kind":"grant","planned":false,"acquired":true,"shares":623479,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock underlying a December 8, 2020 grant of performance-based restricted stock units, including related dividend equivalent units, upon the satisfaction of the applicable performance criteria.  Such performance-based restricted stock units shall vest on May 24, 2024, subject to the reporting person's continuing employment with Sirius XM."}],"balance_after":2228540,"source":{"system":"sec-edgar","filing":"0001225208-24-001502","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520824001502/doc4.xml","form_type":"4"}},{"id":1727212,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2023-11-30T21:13:36.000Z","date":"2023-11-29","kind":"grant","planned":false,"acquired":true,"shares":1057,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 29, 2023, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":1605061,"source":{"system":"sec-edgar","filing":"0001225208-23-010507","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520823010507/doc4.xml","form_type":"4"}},{"id":1792287,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2023-08-31T20:07:42.000Z","date":"2023-08-30","kind":"grant","planned":false,"acquired":true,"shares":822,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 30, 2023, Sirius XM Holdings Inc. 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These additional units are subject to the same conditions regarding vesting and settlement as the underlying restricted stock units to which they relate."}],"balance_after":1604004,"source":{"system":"sec-edgar","filing":"0001225208-23-008577","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520823008577/doc4.xml","form_type":"4"}},{"id":1878871,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2023-05-25T20:26:13.000Z","date":"2023-05-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":77791,"price":3.53,"value":274602.23,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Represents the surrender of common stock to the Company to cover withholding taxes upon the vesting of restricted stock units and related dividends."}],"balance_after":1603182,"source":{"system":"sec-edgar","filing":"0001225208-23-006217","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520823006217/doc4.xml","form_type":"4"}},{"id":1878870,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2023-05-25T20:26:13.000Z","date":"2023-05-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":490,"price":3.53,"value":1729.7,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Represents the surrender of common stock to the Company to cover withholding taxes upon the vesting of dividends."}],"balance_after":1680973,"source":{"system":"sec-edgar","filing":"0001225208-23-006217","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520823006217/doc4.xml","form_type":"4"}},{"id":1878869,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":18856,"kind":"person","name":"Greenstein Scott Andrew","position":1,"cik":"0001289201","reported_name":"Greenstein Scott Andrew","relationship":{"officer":true,"officer_title":"Pres. & Chief Content Officer"}}],"security":"Common Stock","published_at":"2023-05-25T20:26:13.000Z","date":"2023-05-24","kind":"grant","planned":false,"acquired":true,"shares":2240,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 24, 2023, Sirius XM Holdings Inc. 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