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( Mark One ) 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 Delaware ( State or other jurisdiction of incorporation or organization ) 200 SW 1st Ave Fort Lauderdale , Florida ( Address of principal executive offices ) Title of each class Common Stock , Par Value $ 0.01 Per Share AUTONATION , INC . ( Exact name of registrant as specified in its charter ) Commission File Number : 1-13107 Large accelerated filer Non - accelerated filer ( 954 ) 769-6000 ( Registrant's telephone number , including area code ) Securities registered pursuant to Section 12 ( b ) of the Act : Trading Symbol ( s ) AN ( I.R.S. Employer Identification No. ) Yes No p 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 p No ¨ Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15 ( d ) of the Exchange Act . 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 p No 73-1105145 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 new registrant was required to submit such files ) . Yes p No р 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 . Accelerated filer 33301 ( Zip Code ) Name of each exchange on which registered New York Stock Exchange Smaller reporting company Emerging growth company 0 0 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 þ As of June 30 , 2020 , the aggregate market value of the common stock of the registrant held by non - affiliates was approximately $ 2.1 billion based on the closing price of the common stock on the New York Stock Exchange on such date ( for the purpose of this calculation , the registrant assumed that each of its directors , executive officers , and greater than 10 % stockholders was an affiliate of the registrant as of June 30 , 2020 ) . As of February 12 , 2021 , the registrant had 82,232,776 shares of common stock outstanding . DOCUMENTS INCORPORATED BY REFERENCE Portions of the registrant's Proxy Statement relating to its 2021 Annual Meeting of Stockholders to be filed with the SEC within 120 days after the end of the fiscal year ended December 31 , 2020 are incorporated herein by reference in Part III .