X0306 4 2018-07-26 0001494259 CarGurus, Inc. CARG 0001718735 Chrzan Oliver Ian 2 CANAL PARK, 4TH FLOOR CAMBRIDGE MA 02141 1 Sr. VP, Engineering Class A Common Stock 2018-07-26 4 S 0 48000 40.09 D 2174343 D Class A Common Stock 2018-07-27 4 S 0 6000 40.49 D 2168343 D 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 $40.18 to $40.25 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. The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $39.82 to $41.12 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. /s/ Kathleen Patton, as attorney-in-fact 2018-07-30