X0306 4 2018-06-11 0 0001494259 CarGurus, Inc. CARG 0001718790 Zales Samuel 2 CANAL PARK, 4TH FLOOR CAMBRIDGE MA 02141 0 1 0 0 Chief Operating Officer Class A Common Stock 2018-06-11 4 M 0 15000 0.16 A 64012 D Class A Common Stock 2018-06-11 4 S 0 15000 34.69 D 49012 D Employee Stock Option (Right to Buy) 0.16 2018-06-11 4 M 0 15000 0.00 D 2024-12-10 Class A Common Stock 15000 197782 D This stock option exercise was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. This sale was effected pursuant to a Rule 10b5-1 trading plan adopted by the Reporting Person. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $34.31 to $35.00 per share, inclusive. Information regarding the number of shares sold at each separate price will be made available from the Reporting Person upon request by the staff of the Securities and Exchange Commission, the Issuer or any security holder of the Issuer. 16,566 shares of Class A common stock subject to the option will vest and become exercisable on each of August 3, 2018 and November 3, 2018. /s/ Kathleen Patton, attorney-in-fact 2018-06-13