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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 stock Commission File Number 001-36713 LIBERTY BROADBAND CORPORATION ( Exact name of Registrant as specified in its charter ) 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 Series A common stock Series C common stock Series A Cumulative Redeemable preferred LBRDA LBRDK LBRDP to Registrant's telephone number , including area code : ( 720 ) 875-5700 Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) 47-1211994 ( I.R.S. Employer Identification No. ) 80112 ( Zip Code ) Non - accelerated Filer 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 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 Name of each exchange on which registered The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC The Nasdaq Stock Market LLC 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 Smaller Reporting Company Emerging Growth Company Series A 26,495,445 Documents Incorporated by Reference 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 stock held by non - affiliates of Liberty Broadband Corporation computed by reference to the last sales price of such stock , as of the closing of trading on June 30 , 2020 , was $ 21.3 billion . The number of outstanding shares of Liberty Broadband Corporation common stock as of January 31 , 2021 was : Series B 2,549,274 Series C 166,274,052 Liberty Broadband Corporation common stock 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 .