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▬ UNITED STATES SECURITIES AND EXCHANGE COMMISSION WASHINGTON , D.C. 20549 FORM 10 - K ANNUAL REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE FISCAL YEAR ENDED DECEMBER 31 , 2020 OR TRANSITION REPORT PURSUANT TO SECTION 13 OR 15 ( d ) OF THE SECURITIES EXCHANGE ACT OF 1934 FOR THE TRANSITION PERIOD FROM Title of each class Common stock , $ 0.001 par Delaware ( State or other jurisdiction of incorporation or organization ) COMMISSION FILE NUMBER 001-34295 SIRIUS XM HOLDINGS INC . ( Exact name of registrant as specified in its charter ) ΤΟ value 38-3916511 1221 Avenue of the Americas , 35th Floor , New York , NY ( Address of Principal Executive Offices ) 10020 ( Zip Code ) Registrant's telephone number , including area code : ( 212 ) 584-5100 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) ( I.R.S. Employer Identification No. ) SIRI No Securities registered pursuant to Section 12 ( g ) of the Act : None . Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or 15 ( d ) of the Act . Yes Indicate by check mark whether the registrant ( 1 ) has filed all reports required to be filed by Section 13 or 15 ( d ) of the Securities Exchange Act of 1934 during the preceding 12 months ( or for such shorter period that the registrant was required to file such reports ) and ( 2 ) has been subject to such filing requirements for the past 90 days . Yes No □ Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S - T during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes No □ ■ Name of exchange on which registered NASDAQ Global Select Market Indicate by check mark whether the registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , or a smaller reporting company or an emerging growth company . See the definitions of " large accelerated filer , " " accelerated filer " , " smaller reporting company " and " emerging growth company " in Rule 12b - 2 of the Exchange Act .: Large accelerated filer Accelerated filer Smaller reporting company Emerging growth company If an emerging growth company , indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13 ( a ) of the Exchange Act . Indicate by check mark whether the registrant has filed a report on and attestation to its management's assessment of the effectiveness of its internal control over financial reporting under Section 404 ( b ) of the Sarbanes - Oxley Act ( 15 U.S.C. 7262 ( b ) ) by the registered public accounting firm that prepared or issued its audit report . Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes No No □ Non - accelerated filer 0 The aggregate market value of the registrant's common stock held by non - affiliates as of June 30 , 2020 was $ 6,902,732,943 . All executive officers and directors of the registrant have been deemed , solely for the purpose of the foregoing calculation , to be “ affiliates ” of the registrant . The number of shares of the registrant's common stock outstanding as of January 29 , 2021 was 4,139,978,947 . DOCUMENTS INCORPORATED BY REFERENCE Information included in our definitive proxy statement for our 2021 annual meeting of stockholders scheduled to be held on Thursday , June 3 , 2021 is incorporated by reference into Items 10 , 11 , 12 , 13 and 14 of Part III of this report .