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SECURITIES AND EXCHANGE COMMISSION Washington , D.C. 20549 FORM 10 - K ( Mark One ) 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 Delaware ( State or other jurisdiction of incorporation or organization ) 400 Atlantic Street UNITED STATES Title of each class Class A Common Stock $ .001 Par Value For the Transition Period From Commission File Number : 001-33664 Charter COMMUNICATIONS ( Address of Principal Executive Offices ) to Charter Communications , Inc. ( Exact name of registrant as specified in its charter ) Stamford Connecticut CHTR ( 203 ) 905-7801 ( Registrant's telephone number , including area code ) Securities registered pursuant to section 12 ( b ) of the Act : Trading Symbol ( s ) ( I.R.S. Employer Identification No. ) Securities registered pursuant to section 12 ( g ) of the Act : None 84-1496755 06901 ( Zip Code ) Name of each exchange on which registered NASDAQ Global Select Market Indicate by check mark if the registrant is a well - known seasoned issuer , as defined in Rule 405 of the Securities Act . Yes x No o 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 o No x 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 x No O Indicate by check mark whether the registrant is a shell company ( as defined in Rule 12b - 2 of the Act ) . Yes No x Indicate by check mark whether the registrants have submitted electronically every Interactive Data File required to be submitted and posted 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 registrants were required to submit and post such files ) . Yes x No o Indicate by check mark whether the registrant a large accelerated filer , an accelerated filer , a non - accelerated filer , or a smaller reporting company . See definition of " large accelerated filer , " " accelerated filer , " and " smaller reporting company " in Rule 12b - 2 of the Exchange Act .: Large accelerated filer x Accelerated filer o Non - accelerated filer o 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 . o The aggregate market value of the registrant of outstanding Class A common stock held by non - affiliates of the registrant at June 30 , 2020 was approximately $ 75.8 billion , computed based on the closing sale price as quoted on the NASDAQ Global Select Market on that date . For purposes of this calculation only ,