X0306 4 2018-06-07 0 0001494259 CarGurus, Inc. CARG 0001556198 Parafestas Anastasios ONE JOY STREET BOSTON MA 02108 1 0 1 0 Class A Common Stock 2018-06-07 4 S 0 900000 33.00 D 10573472 I See footnote Class A Common Stock 2018-06-07 4 S 0 400000 33.00 D 2141768 I See footnote Class A Common Stock 106873 D The reported price in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $33.00 to $33.90 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 shares are owned directly by Argonaut 22 LLC. Spinnaker Capital LLC is the Managing Member of Argonaut 22 LLC and the Reporting Person, a director of the Issuer, is the Managing Member of Spinnaker Capital LLC. The Reporting Person and Spinnaker Capital LLC are indirect beneficial owners of the reported securities. The shares are owned directly by The RWS 2006 Family Trust. The Reporting Person, a director of the Issuer, is a co-trustee of The RWS 2006 Family Trust and may be deemed to be an indirect beneficial owner of the shares held by The RWS 2006 Family Trust. The Reporting Person expressly disclaims beneficial ownership of the shares held by The RWS 2006 Family Trust and this report shall not be deemed an admission that the Reporting Person is a beneficial owner of such securities for the purpose of Section 16 of the Securities Exchange Act of 1934, as amended, or for any other purpose. /s/ Anastasios Parafestas 2018-06-08