UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 Emerging growth company ☐ FORM 10-Q (Mark One) ☑ QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the quarterly period ended September 30, 2019 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: 1-13107 AutoNation, Inc. (Exact name of registrant as specified in its charter) (State or other juris ...