{"transactions":[{"id":3596152,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":false,"shares":89565,"price":3.3699,"value":301825.0935,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":3.3699,"exercise_date":"2015-08-05","expiration_date":"2024-08-05","underlying":"Common Stock","underlying_shares":89565},"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596151,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":false,"shares":620874,"price":3.95,"value":2452452.3,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":3.95,"exercise_date":"2016-07-29","expiration_date":"2025-07-29","underlying":"Common Stock","underlying_shares":620874},"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596150,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":false,"shares":1377619,"price":3.61,"value":4973204.59,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":3.61,"exercise_date":"2017-02-23","expiration_date":"2026-02-23","underlying":"Common Stock","underlying_shares":1377619},"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596149,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":false,"shares":87841,"price":4.75,"value":417244.75,"ownership":{"direct":true},"balance_after":87840,"derivative":{"exercise_price":4.75,"exercise_date":"2018-02-02","expiration_date":"2027-02-02","underlying":"Common Stock","underlying_shares":87841},"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596148,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Common Stock","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"tax_withholding","acquired":false,"shares":1739986,"price":6.14,"value":10683514.04,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the exercise price of the stock option referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":309861,"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596147,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Common Stock","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"sale","acquired":false,"shares":588503,"price":6.13,"value":3607523.39,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sales price for the price increments ranging from $6.13 to $6.1350.  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":2049847,"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596146,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Common Stock","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":true,"shares":87841,"price":4.75,"value":417244.75,"ownership":{"direct":true},"balance_after":2638350,"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596145,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Common Stock","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":true,"shares":89565,"price":3.3699,"value":301825.0935,"ownership":{"direct":true},"balance_after":2550509,"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596144,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Common Stock","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":true,"shares":620874,"price":3.95,"value":2452452.3,"ownership":{"direct":true},"balance_after":2460944,"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3596143,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Chief Innovation Officer"}}],"security":"Common Stock","published_at":"2019-03-14T20:07:06.000Z","date":"2019-03-12","kind":"exercise","acquired":true,"shares":1377619,"price":3.61,"value":4973204.59,"ownership":{"direct":true},"balance_after":1840070,"source":{"system":"sec-edgar","filing":"0001225208-19-005280","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819005280/doc4.xml","form_type":"4"}},{"id":3624537,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2019-03-01T21:04:55.000Z","date":"2019-02-28","kind":"grant","acquired":true,"shares":730,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 28, 2019, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.0121 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, February 11, 2019.  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":462451,"source":{"system":"sec-edgar","filing":"0001225208-19-004114","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819004114/doc4.xml","form_type":"4"}},{"id":3672773,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2019-02-06T21:12:08.000Z","date":"2019-02-04","kind":"tax_withholding","acquired":false,"shares":5999,"price":5.98,"value":35874.02,"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."}],"balance_after":461721,"source":{"system":"sec-edgar","filing":"0001225208-19-001859","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819001859/doc4.xml","form_type":"4"}},{"id":3675558,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-02-05T21:17:14.000Z","date":"2019-02-01","kind":"grant","acquired":true,"shares":410370,"price":5.98,"value":2454012.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Approximately one-third of options will vest on each of 2/1/20; 2/1/21 and 2/1/22."}],"balance_after":410370,"derivative":{"exercise_price":5.98,"exercise_date":"2020-02-01","expiration_date":"2029-02-01","underlying":"Common Stock","underlying_shares":410370},"source":{"system":"sec-edgar","filing":"0001225208-19-001796","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819001796/doc4.xml","form_type":"4"}},{"id":3675557,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2019-02-05T21:17:14.000Z","date":"2019-02-01","kind":"tax_withholding","acquired":false,"shares":9873,"price":5.83,"value":57559.59,"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 restricted stock units."}],"balance_after":467720,"source":{"system":"sec-edgar","filing":"0001225208-19-001796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819001796/doc4.xml","form_type":"4"}},{"id":3675556,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2019-02-05T21:17:14.000Z","date":"2019-02-01","kind":"grant","acquired":true,"shares":83625,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Approximately one-third of restricted stock units will vest on each of 2/1/20; 2/1/21 and 2/1/22."}],"balance_after":477593,"source":{"system":"sec-edgar","filing":"0001225208-19-001796","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819001796/doc4.xml","form_type":"4"}},{"id":3691151,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2019-01-22T21:06:08.000Z","date":"2019-01-18","kind":"grant","acquired":true,"shares":106030,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents shares of common stock underlying an February 2, 2017 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 February 2, 2020, subject to the reporting person's continuing employment with Sirius XM."}],"balance_after":393968,"source":{"system":"sec-edgar","filing":"0001225208-19-001084","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520819001084/doc4.xml","form_type":"4"}},{"id":3746691,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-12-03T21:09:17.000Z","date":"2018-11-30","kind":"grant","acquired":true,"shares":424,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 30, 2018, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.0121 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, November 9, 2018.  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":287938,"source":{"system":"sec-edgar","filing":"0001225208-18-016069","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818016069/doc4.xml","form_type":"4"}},{"id":3827815,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-09-04T20:05:40.000Z","date":"2018-08-31","kind":"grant","acquired":true,"shares":332,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 31, 2018, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.011 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, August 10, 2018.  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":287514,"source":{"system":"sec-edgar","filing":"0001225208-18-013030","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818013030/doc4.xml","form_type":"4"}},{"id":3851193,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-08-07T20:08:47.000Z","date":"2018-08-06","kind":"tax_withholding","acquired":false,"shares":4579,"price":6.87,"value":31457.73,"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."}],"balance_after":287182,"source":{"system":"sec-edgar","filing":"0001225208-18-012391","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818012391/doc4.xml","form_type":"4"}},{"id":3858289,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-07-31T20:15:40.000Z","date":"2018-07-30","kind":"tax_withholding","acquired":false,"shares":20829,"price":7.08,"value":147469.32,"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."}],"balance_after":291761,"source":{"system":"sec-edgar","filing":"0001225208-18-012047","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818012047/doc4.xml","form_type":"4"}},{"id":3911487,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-06-01T22:40:27.000Z","date":"2018-05-31","kind":"grant","acquired":true,"shares":454,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 31, 2018, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.011 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, May 10, 2018.  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":312590,"source":{"system":"sec-edgar","filing":"0001225208-18-010053","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818010053/doc4.xml","form_type":"4"}},{"id":4025198,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-03-01T21:28:44.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":683,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 28, 2018, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.011 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, February 7, 2018.  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 restricted stock units are shown on page 1 of this Form 4.  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":312136,"source":{"system":"sec-edgar","filing":"0001225208-18-004933","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818004933/doc4.xml","form_type":"4"}},{"id":4035042,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2018-02-26T21:14:52.000Z","date":"2018-02-23","kind":"exercise","acquired":false,"shares":1377619,"price":3.61,"value":4973204.59,"ownership":{"direct":true},"balance_after":1377619,"derivative":{"exercise_price":3.61,"exercise_date":"2017-02-23","expiration_date":"2026-02-23","underlying":"Common Stock","underlying_shares":1377619},"source":{"system":"sec-edgar","filing":"0001225208-18-004110","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818004110/doc4.xml","form_type":"4"}},{"id":4035041,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-26T21:14:52.000Z","date":"2018-02-23","kind":"tax_withholding","acquired":false,"shares":1082363,"price":6.19,"value":6699826.97,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Represents the exercise price of the stock option referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":311453,"source":{"system":"sec-edgar","filing":"0001225208-18-004110","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818004110/doc4.xml","form_type":"4"}},{"id":4035040,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-26T21:14:52.000Z","date":"2018-02-23","kind":"sale","acquired":false,"shares":306400,"price":6.1923,"value":1897320.72,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the weighted average sales price for the price increments ranging from $6.18 to $6.20.  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":1393816,"source":{"system":"sec-edgar","filing":"0001225208-18-004110","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818004110/doc4.xml","form_type":"4"}},{"id":4035039,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-26T21:14:52.000Z","date":"2018-02-23","kind":"tax_withholding","acquired":false,"shares":45370,"price":6.15,"value":279025.5,"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."}],"balance_after":1700216,"source":{"system":"sec-edgar","filing":"0001225208-18-004110","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818004110/doc4.xml","form_type":"4"}},{"id":4035038,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-26T21:14:52.000Z","date":"2018-02-23","kind":"exercise","acquired":true,"shares":1377619,"price":3.61,"value":4973204.59,"ownership":{"direct":true},"balance_after":1745586,"source":{"system":"sec-edgar","filing":"0001225208-18-004110","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818004110/doc4.xml","form_type":"4"}},{"id":4072784,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2018-02-07T21:16:19.000Z","date":"2018-02-06","kind":"exercise","acquired":false,"shares":235796,"price":3.55,"value":837075.8,"ownership":{"direct":true},"balance_after":0,"derivative":{"exercise_price":3.55,"exercise_date":"2015-02-03","expiration_date":"2024-02-03","underlying":"Common Stock","underlying_shares":235796},"source":{"system":"sec-edgar","filing":"0001225208-18-002216","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002216/doc4.xml","form_type":"4"}},{"id":4072783,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2018-02-07T21:16:19.000Z","date":"2018-02-06","kind":"exercise","acquired":false,"shares":87841,"price":4.75,"value":417244.75,"ownership":{"direct":true},"balance_after":175681,"derivative":{"exercise_price":4.75,"exercise_date":"2018-02-02","expiration_date":"2027-02-02","underlying":"Common Stock","underlying_shares":87841},"source":{"system":"sec-edgar","filing":"0001225208-18-002216","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002216/doc4.xml","form_type":"4"}},{"id":4072782,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-07T21:16:19.000Z","date":"2018-02-06","kind":"tax_withholding","acquired":false,"shares":265929,"price":5.93,"value":1576958.97,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the exercise price of the stock option referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":367967,"source":{"system":"sec-edgar","filing":"0001225208-18-002216","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002216/doc4.xml","form_type":"4"}},{"id":4072781,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-07T21:16:19.000Z","date":"2018-02-06","kind":"sale","acquired":false,"shares":57708,"price":5.9036,"value":340684.9488,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sales price for the price increments ranging from $5.9010 to $5.9150.  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":633896,"source":{"system":"sec-edgar","filing":"0001225208-18-002216","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002216/doc4.xml","form_type":"4"}},{"id":4072780,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-07T21:16:19.000Z","date":"2018-02-06","kind":"exercise","acquired":true,"shares":87841,"price":4.75,"value":417244.75,"ownership":{"direct":true},"balance_after":691604,"source":{"system":"sec-edgar","filing":"0001225208-18-002216","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002216/doc4.xml","form_type":"4"}},{"id":4072779,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-07T21:16:19.000Z","date":"2018-02-06","kind":"exercise","acquired":true,"shares":235796,"price":3.55,"value":837075.8,"ownership":{"direct":true},"balance_after":603763,"source":{"system":"sec-edgar","filing":"0001225208-18-002216","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002216/doc4.xml","form_type":"4"}},{"id":4077402,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2018-02-05T21:15:47.000Z","date":"2018-02-01","kind":"grant","acquired":true,"shares":452878,"price":6.11,"value":2767084.58,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Approximately one-third of options will vest on each of 2/1/19; 2/1/20 and 2/1/21."}],"balance_after":452878,"derivative":{"exercise_price":6.11,"exercise_date":"2019-02-01","expiration_date":"2028-02-01","underlying":"Common Stock","underlying_shares":452878},"source":{"system":"sec-edgar","filing":"0001225208-18-002143","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002143/doc4.xml","form_type":"4"}},{"id":4077401,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-05T21:15:47.000Z","date":"2018-02-02","kind":"tax_withholding","acquired":false,"shares":6540,"price":6.11,"value":39959.4,"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 restricted stock units."}],"balance_after":367967,"source":{"system":"sec-edgar","filing":"0001225208-18-002143","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002143/doc4.xml","form_type":"4"}},{"id":4077400,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2018-02-05T21:15:47.000Z","date":"2018-02-01","kind":"grant","acquired":true,"shares":81833,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Approximately one-third of restricted stock units will vest on each of 2/1/19, 2/1/20 and 2/1/21."}],"balance_after":374507,"source":{"system":"sec-edgar","filing":"0001225208-18-002143","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520818002143/doc4.xml","form_type":"4"}},{"id":4145046,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-12-04T21:09:52.000Z","date":"2017-11-30","kind":"grant","acquired":true,"shares":785,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 30, 2017, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.011 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, November 9, 2017.  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 restricted stock units are shown on page 1 of this Form 4.  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":292674,"source":{"system":"sec-edgar","filing":"0001225208-17-018086","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817018086/doc4.xml","form_type":"4"}},{"id":4218650,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-09-05T20:04:15.000Z","date":"2017-08-31","kind":"grant","acquired":true,"shares":713,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On August 31, 2017, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.01 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, August 10, 2017.  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 restricted stock units are shown on page 1 of this Form 4.  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":291889,"source":{"system":"sec-edgar","filing":"0001225208-17-014557","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817014557/doc4.xml","form_type":"4"}},{"id":4236963,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-08-11T20:14:24.000Z","date":"2017-08-10","kind":"exercise","acquired":false,"shares":89565,"price":3.3699,"value":301825.0935,"ownership":{"direct":true},"balance_after":89565,"derivative":{"exercise_price":3.3699,"exercise_date":"2015-08-05","expiration_date":"2024-08-05","underlying":"Common Stock","underlying_shares":89565},"source":{"system":"sec-edgar","filing":"0001225208-17-013886","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013886/doc4.xml","form_type":"4"}},{"id":4236962,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-11T20:14:24.000Z","date":"2017-08-10","kind":"tax_withholding","acquired":false,"shares":72389,"price":5.55,"value":401758.95,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the exercise price of the stock option referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":291176,"source":{"system":"sec-edgar","filing":"0001225208-17-013886","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013886/doc4.xml","form_type":"4"}},{"id":4236961,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-11T20:14:24.000Z","date":"2017-08-10","kind":"sale","acquired":false,"shares":42467,"price":5.5044,"value":233755.3548,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sales price for the price increments ranging from $5.50 to $5.5150.  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":363565,"source":{"system":"sec-edgar","filing":"0001225208-17-013886","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013886/doc4.xml","form_type":"4"}},{"id":4236960,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-11T20:14:24.000Z","date":"2017-08-10","kind":"exercise","acquired":true,"shares":89565,"price":3.3699,"value":301825.0935,"ownership":{"direct":true},"balance_after":406032,"source":{"system":"sec-edgar","filing":"0001225208-17-013886","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013886/doc4.xml","form_type":"4"}},{"id":4241699,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-07T20:03:41.000Z","date":"2017-08-07","kind":"tax_withholding","acquired":false,"shares":4779,"price":5.56,"value":26571.24,"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."}],"balance_after":316467,"source":{"system":"sec-edgar","filing":"0001225208-17-013332","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013332/doc4.xml","form_type":"4"}},{"id":4247737,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-08-01T20:15:37.000Z","date":"2017-07-31","kind":"exercise","acquired":false,"shares":1241749,"price":3.95,"value":4904908.55,"ownership":{"direct":true},"balance_after":620874,"derivative":{"exercise_price":3.95,"exercise_date":"2016-07-29","expiration_date":"2025-07-29","underlying":"Common Stock","underlying_shares":1241749},"source":{"system":"sec-edgar","filing":"0001225208-17-013064","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013064/doc4.xml","form_type":"4"}},{"id":4247736,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-01T20:15:37.000Z","date":"2017-07-31","kind":"tax_withholding","acquired":false,"shares":1044155,"price":5.86,"value":6118748.3,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the exercise price of the stock option referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":321246,"source":{"system":"sec-edgar","filing":"0001225208-17-013064","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013064/doc4.xml","form_type":"4"}},{"id":4247735,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-01T20:15:37.000Z","date":"2017-07-31","kind":"sale","acquired":false,"shares":197594,"price":5.85,"value":1155924.9,"ownership":{"direct":true},"balance_after":1365401,"source":{"system":"sec-edgar","filing":"0001225208-17-013064","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013064/doc4.xml","form_type":"4"}},{"id":4247734,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-01T20:15:37.000Z","date":"2017-07-31","kind":"tax_withholding","acquired":false,"shares":21737,"price":5.81,"value":126291.97,"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."}],"balance_after":1562995,"source":{"system":"sec-edgar","filing":"0001225208-17-013064","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013064/doc4.xml","form_type":"4"}},{"id":4247733,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-08-01T20:15:37.000Z","date":"2017-07-31","kind":"exercise","acquired":true,"shares":1241749,"price":3.95,"value":4904908.55,"ownership":{"direct":true},"balance_after":1584732,"source":{"system":"sec-edgar","filing":"0001225208-17-013064","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817013064/doc4.xml","form_type":"4"}},{"id":4298668,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-06-01T20:26:37.000Z","date":"2017-05-31","kind":"grant","acquired":true,"shares":893,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On May 31, 2017, Sirius XM Holdings Inc. (\"Sirius XM\") paid a cash dividend of $0.01 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius XM's common stock on the record date, May 10, 2017.  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 restricted stock units are shown on page 1 of this Form 4.  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":342983,"source":{"system":"sec-edgar","filing":"0001225208-17-010728","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817010728/doc4.xml","form_type":"4"}},{"id":4395755,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-03-08T21:12:02.000Z","date":"2017-03-07","kind":"exercise","acquired":false,"shares":1377620,"price":3.61,"value":4973208.2,"ownership":{"direct":true},"balance_after":2755238,"derivative":{"exercise_price":3.61,"exercise_date":"2017-02-23","expiration_date":"2026-02-23","underlying":"Common Stock","underlying_shares":1377620},"source":{"system":"sec-edgar","filing":"0001225208-17-005876","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817005876/doc4.xml","form_type":"4"}},{"id":4395754,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-03-08T21:12:02.000Z","date":"2017-03-07","kind":"tax_withholding","acquired":false,"shares":1177421,"price":5.14,"value":6051943.94,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Represents the exercise price of the stock option referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":342090,"source":{"system":"sec-edgar","filing":"0001225208-17-005876","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817005876/doc4.xml","form_type":"4"}},{"id":4395753,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-03-08T21:12:02.000Z","date":"2017-03-07","kind":"sale","acquired":false,"shares":277241,"price":5.1316,"value":1422689.9156,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the weighted average sales price for the price increments ranging from $5.13 to $5.1350.  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":1519511,"source":{"system":"sec-edgar","filing":"0001225208-17-005876","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817005876/doc4.xml","form_type":"4"}},{"id":4395752,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-03-08T21:12:02.000Z","date":"2017-03-07","kind":"exercise","acquired":true,"shares":1377620,"price":3.61,"value":4973208.2,"ownership":{"direct":true},"balance_after":1796752,"source":{"system":"sec-edgar","filing":"0001225208-17-005876","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817005876/doc4.xml","form_type":"4"}},{"id":4411356,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-03-02T21:04:51.000Z","date":"2017-02-28","kind":"grant","acquired":true,"shares":1155,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On February 28, 2017, Sirius XM Holdings Inc. (\"Sirius\") paid a cash dividend of $0.01 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius' common stock on the record date, February 7, 2017.  Pursuant to the terms of the agreement governing the outstanding restricted stock units held by Mr. Cady, Mr. Cady received an additional 1,155 restricted stock units as a result of the payment 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":419132,"source":{"system":"sec-edgar","filing":"0001225208-17-005285","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817005285/doc4.xml","form_type":"4"}},{"id":4428810,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-02-23T21:04:02.000Z","date":"2017-02-23","kind":"tax_withholding","acquired":false,"shares":47372,"price":5.15,"value":243965.8,"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."}],"balance_after":417977,"source":{"system":"sec-edgar","filing":"0001225208-17-004308","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817004308/doc4.xml","form_type":"4"}},{"id":4446655,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-02-15T22:31:01.000Z","date":"2017-02-14","kind":"exercise","acquired":false,"shares":179130,"price":3.3699,"value":603650.187,"ownership":{"direct":true},"balance_after":179130,"derivative":{"exercise_price":3.3699,"exercise_date":"2015-08-05","expiration_date":"2024-08-05","underlying":"Common Stock","underlying_shares":179130},"source":{"system":"sec-edgar","filing":"0001225208-17-003420","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817003420/doc4.xml","form_type":"4"}},{"id":4446654,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-02-15T22:31:01.000Z","date":"2017-02-14","kind":"exercise","acquired":false,"shares":707390,"price":3.55,"value":2511234.5,"ownership":{"direct":true},"balance_after":235796,"derivative":{"exercise_price":3.55,"exercise_date":"2015-02-03","expiration_date":"2024-02-03","underlying":"Common Stock","underlying_shares":707390},"source":{"system":"sec-edgar","filing":"0001225208-17-003420","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817003420/doc4.xml","form_type":"4"}},{"id":4446653,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-02-15T22:31:01.000Z","date":"2017-02-14","kind":"tax_withholding","acquired":false,"shares":772568,"price":4.77,"value":3685149.36,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Represents the exercise price of the stock options referenced in Table II and associated taxes which was paid by way of the withholding by the Company of shares with a value equal to the exercise price and such taxes."}],"balance_after":465349,"source":{"system":"sec-edgar","filing":"0001225208-17-003420","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817003420/doc4.xml","form_type":"4"}},{"id":4446652,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-02-15T22:31:01.000Z","date":"2017-02-14","kind":"sale","acquired":false,"shares":113952,"price":4.76,"value":542411.52,"ownership":{"direct":true},"balance_after":1237917,"source":{"system":"sec-edgar","filing":"0001225208-17-003420","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817003420/doc4.xml","form_type":"4"}},{"id":4446651,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-02-15T22:31:01.000Z","date":"2017-02-14","kind":"exercise","acquired":true,"shares":179130,"price":3.3699,"value":603650.187,"ownership":{"direct":true},"balance_after":1351869,"source":{"system":"sec-edgar","filing":"0001225208-17-003420","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817003420/doc4.xml","form_type":"4"}},{"id":4446650,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-02-15T22:31:01.000Z","date":"2017-02-14","kind":"exercise","acquired":true,"shares":707390,"price":3.55,"value":2511234.5,"ownership":{"direct":true},"balance_after":1172739,"source":{"system":"sec-edgar","filing":"0001225208-17-003420","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817003420/doc4.xml","form_type":"4"}},{"id":4466975,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Stock Option (Right to Buy)","published_at":"2017-02-06T21:09:19.000Z","date":"2017-02-02","kind":"grant","acquired":true,"shares":263522,"price":4.75,"value":1251729.5,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Options will vest as follows:  87,841 - 2/2/2018; 87,841 - 2/2/2019 and 87,840 - 2/2/2020."}],"balance_after":263522,"derivative":{"exercise_price":4.75,"exercise_date":"2018-02-02","expiration_date":"2027-02-02","underlying":"Common Stock","underlying_shares":263522},"source":{"system":"sec-edgar","filing":"0001225208-17-002452","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817002452/doc4.xml","form_type":"4"}},{"id":4466974,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2017-02-06T21:09:19.000Z","date":"2017-02-02","kind":"grant","acquired":true,"shares":52632,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Restricted Stock Units will vest as follows:  17,544 on 2/2/2018; 2/2/2019 and 2/2/2020."}],"balance_after":465349,"source":{"system":"sec-edgar","filing":"0001225208-17-002452","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520817002452/doc4.xml","form_type":"4"}},{"id":4537696,"issuer":{"id":3564,"kind":"organization","name":"SIRIUS XM HOLDINGS INC.","symbol":"(SIRI)"},"owners":[{"id":157636,"kind":"person","name":"Cady James Arthur","position":1,"cik":"0001646942","reported_name":"Cady James Arthur","relationship":{"officer":true,"officer_title":"EVP, Product and Operations"}}],"security":"Common Stock","published_at":"2016-12-01T21:04:26.000Z","date":"2016-11-30","kind":"grant","acquired":true,"shares":916,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"On November 30, 2016, Sirius XM Holdings Inc. (\"Sirius\") paid a cash dividend of $0.01 per share on each share of its outstanding common stock.  The dividend was payable to all holders of Sirius' common stock on the record date, November 9, 2016.  Pursuant to the terms of the agreement governing the outstanding restricted stock units held by Mr. Cady, Mr. Cady received an additional 916 restricted stock units as a result of the payment 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":412717,"source":{"system":"sec-edgar","filing":"0001225208-16-042485","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/908937/000122520816042485/doc4.xml","form_type":"4"}}]}