X0306 4 2021-05-04 0001494259 CarGurus, Inc. CARG 0001842330 Fredo Scot Christopher 2 CANAL PARK 4TH FLOOR CAMBRIDGE MA 02141 1 CFO and Treasurer Class A Common Stock 2021-05-04 4 F 0 99 23.71 D 60591 D Class A Common Stock 2021-05-04 4 M 0 224 0 A 60815 D Restricted Stock Units 0 2021-05-04 4 M 0 224 0 D Class B Common Stock 224 0 D Shares withheld for payment of tax liability upon vesting of restricted stock units ("RSUs"). Represents the conversion of Class B common stock into Class A common stock at the Reporting Person's election. Each share of Class B common stock is convertible into one share of Class A common stock at the option of the holder and has no expiration date. On May 4, 2017, the Reporting Person was granted 3,600 RSUs convertible into shares of Class B common stock. The RSUs are subject to a liquidity-based vesting requirement, which was satisfied in connection with the Issuer's initial public offering, and a service-based vesting requirement. Subject to the Reporting Person's continued employment, 25% of the RSUs vested on May 4, 2018 and 6.25% of the RSUs vested on the last day of each three-month period thereafter until May 4, 2021. Any vested RSUs will settle within 60 days of the date of vesting. /s/ Kathleen Patton, as attorney-in-fact 2021-05-05