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Table of Contents ☐ 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 to Commission File Number 001-35707 LIBERTY MEDIA CORPORATION State of Delaware ( State or other jurisdiction of incorporation or organization ) 12300 Liberty Boulevard Englewood , Colorado ( Address of principal executive offices ) Title of each class ( Exact name of Registrant as specified in its charter ) Registrant's telephone number , including area code : ( 720 ) 875-5400 Securities registered pursuant to Section 12 ( b ) of the Act : Series A Liberty SiriusXM Common Stock Series B Liberty SiriusXM Common Stock Series C Liberty SiriusXM Common Stock Series A Liberty Braves Common Stock Series C Liberty Braves Common Stock Series A Liberty Formula One Common Stock Series C Liberty Formula One Common Stock Trading Symbol LSXMA LSXMB LSXMK BATRA BATRK FWONA FWONK 37-1699499 ( I.R.S. Employer Identification No. ) 80112 ( Zip Code ) Name of each exchange on which registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC 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 AcYes > No ☐ Indicate by check mark if the Registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Act . Yes No ☑ 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 ( $ 232.405 of this chapter ) during the preceding 12 months ( or for such shorter period that the registrant was required to submit such files ) . Yes ☑No ☐ Indicate by check mark whether the Registrant is a large accelerated filer , an accelerated filer , a non - accelerated filer , 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 Non - 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 Exchange Act ) . Yes No ☑ The aggregate market value of the voting and non - voting common stock held by non affiliates of Liberty Media Corporation computed by reference to the last sales price of such stock , as of the closing of trading on June 30 , 2020 , was approximately $ 18.5 billion . The number of outstanding shares of Liberty Media Corporation's common stock as of January 31 , 2021 was : Liberty SiriusXM common stock Liberty Braves common stock Liberty Formula One common stock Series A 99,190,965 10,312,670 25,835,838 Documents Incorporated by Reference Series B 9,802,232 981,778 2,446,606 Series C 229,056,782 40,958,175 203,538,477 The Registrant's definitive proxy statement for its 2021 Annual Meeting of Stockholders is hereby incorporated by reference into Part III of this Annual Report on Form 10 - K .