SCHEDULE 13G/A 0001193125-24-035142 0001719138 XXXXXXXX LIVE 7 Class A common stock, par value $0.001 per share 12/31/2024 0001494259 CarGurus, Inc. 141788109 1001 Boylston Street 16th Floor Boston MA 02115 Rule 13d-1(d) Langley Steinert X1 13940622 0 13940622 0 13940622 Y 13.8 IN CarGurus, Inc. 1001 Boylston Street, 16th Floor, Boston, Massachusetts 02115 This amendment to Schedule 13G is filed by Langley Steinert, the Executive Chair and Chair of the Board of Directors of the Issuer (the "Reporting Person"). The principal business address for the Reporting Person is c/o 1001 Boylston Street, 16th Floor, Boston, Massachusetts 02115. The Reporting Person is a United States citizen. Y The Reporting Person owns 13,940,622 shares of Class A Common Stock, representing (i) 698,999 shares of Class A Common Stock, (ii) 23,833 shares of Class A Common Stock underlying restricted stock units that will vest within 60 days after December 31, 2024, (iii) 2,282 shares of Class A Common Stock underlying options that will vest and become exercisable within 60 days after December 31, 2024, and (iv) 13,215,508 shares of the Issuer's Class B common stock, par value $0.001 per share ("Class B Common Stock"), which are convertible on a one-for-one basis into shares of Class A Common Stock at any time at the election of the Reporting Person. The Reporting Person has sole voting and dispositive power with respect to these shares. The number of shares of Class A Common Stock herein reported as beneficially owned by the Reporting Person does not include shares of Class A Common Stock that are owned directly by The Langley Steinert Irrevocable Family Trust dated June 21, 2004. The Reporting Person is neither trustee for nor beneficiary of such trust and therefore has neither voting nor dispositive power with respect to these shares. The Reporting Person expressly disclaims beneficial ownership of such shares. The Reporting Person owns 13.8% of the total Class A Common Stock outstanding. The percentage amount for the Reporting Person is based on 87,950,796 shares of Class A Common Stock outstanding as of October 31, 2024, as set forth in the Issuer's Quarterly Report on Form 10-Q for the quarter ended September 30, 2024, filed with the U.S. Securities and Exchange Commission on November 7, 2024. Shares of Class B Common Stock are convertible on a one-for-one basis into shares of Class A Common Stock at any time at the option of the Reporting Person on a one-for-one basis. The percentage of beneficial ownership assumes the conversion of all of the shares of the Class B Common Stock held by the Reporting Person. 13,940,622 shares of Class A Common Stock 0 shares of Class A Common Stock 13,940,622 shares of Class A Common Stock 0 shares of Class A Common Stock Y Y Y Y Y Y Langley Steinert /s/ Langley Steinert 02/13/2025