Filing Details

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 SCHEDULE 13G UNDER THE SECURITIES EXCHANGE ACT OF 1934 (AMENDMENT N0. 0) Cargurus Inc. (Name of Issuer) Class A Common Stock (Title of Class of Securities) 141788109 (CUSIP Number) October 2, 2019 (Date of Event Which Requires Filing of this Statement) Check the appropriate box to designate the rule pursuant to which this Schedule is filed: |_| Rule 13d-1(b) |X| Rule 13d-1(c) |_|Rule 13d-1(d) CUSIP NO. 141788109 1 Name Of Reporting Persons Investment Adviser: HMI Capital, LLC Fund: HMI Capital Partners, L.P. 2 Check The Appropriate Box If A Member Of A Group (See Instructions) (a) |_| (b) |_| 3 SEC Use Only 4 Citizenship Or Place Of Organization Delaware Number of Shares Beneficially Owned by Each Reporting With 5 Sole Voting Power 5,165,000 6 Shared Voting Power 0 7 Sole Dispositive Power 5,165,000 8 Shared Dispositive Power 0 9 Aggregate Amount Beneficially Owned By Each Reporting Person 5,165,000 10 Check If The Aggregate Amount In Row (9) Excludes Certain Shares Not Applicable 11 Percent Of Class Represented By Amount In Row 9 5.68% 12 Type Of Reporting Person (See Instructions) IA

Item 1 (a). Name of Issuer: Cargurus Inc. Item 1 (b). Address of Issuer's Principal Executive Offices: 2 Canal Park, 4th Floor Cambridge, MA 02141 US Item 2 (a). Name of Person Filing: HMI Capital, LLC HMI Capital Partners, L.P. Item 2 (b). Address of Principal Business Office: The principal address of HMI Capital, LLC and HMI Capital Partners, L.P. is 555 California Street, Suite 4900, San Francisco, CA 94104. Item 2(c). Citizenship: United States Item 2(d).Title of Class of Securities: Class A Common Stock Item 2 (e). CUSIP Number: 141788109 Item 3.If this statement is filed pursuant to Rules 13d-1(b), or 13d-2(b) or (c), check whether the person filing is a: (a) |_|Broker or dealer registered under Section 15 of the Act. (b) |_|Bank as defined in Section 3(a)(6) of the Act. (c) |_|Insurance company as defined in Section 3(a)(19) of the Act. (d) |_|Investment company registered under Section 8 of the Investment Company Act. (e) |_|An investment adviser in accordance with Rule 13d- 1(b)(1) (ii)(E); (f) |_|An employee benefit plan or endowment fund in accordance with Rule 13d-1(b)(1)(ii)(F); (g) |_| A parent holding company, in accordance with Rule 13d- 1(b)(ii)(G); (h) |_|A savings association as defined in Section 3(b) of the Federal Deposit Insurance Act; (i) |_|A church plan that is excluded from the definition of an investment company under section 3(c)(14) of the Investment Company Act of 1940; (j) |_|Group, in accordance with Rule 13d-1(b)(1)(ii)(J). Not Applicable Item 4. Ownership. HMI Capital, LLC (a) Amount beneficially owned: 5,165,000 (b) Percent of Class: 5.68% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 5,165,000 (ii) Shared power to vote or to direct the vote: 0 (iii) Sole power to dispose or to direct the disposition of: 5,165,000 (iv) Shared power to dispose or to direct the disposition of: 0 HMI Capital, L.P. (a) Amount beneficially owned: 4,651,514 (b) Percent of Class: 5.12% (c) Number of shares as to which such person has: (i) Sole power to vote or to direct the vote: 4,651,000 (ii) Shared power to vote or to direct the vote: 0 (iii) Sole power to dispose or to direct the disposition of: 4,651,000 (iv) Shared power to dispose or to direct the disposition of: 0 Item 5.Ownership of Five Percent or Less of a Class: Not Applicable Item 6. Ownership of More than Five Percent on Behalf of Another Person: Not Applicable Item 7. Identification and Classification of the Subsidiary Which Acquired the Security Being Reported on by the Parent Holding Company: Not Applicable Item 8. Identification and Classification of Members of the Group: Not Applicable Item 9. Notice of Dissolution of Group: Not Applicable Item 10. Certification. By signing below I certify that, to the best of my knowledge and belief, the securities referred to above were not acquired and are not held for the purpose of or with the effect of changing or influencing the control of the issuer of the securities and were not acquired and are not held in connection with or as a participant in any transaction having the purpose or effect. SIGNATURE. After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct. Dated: October 9, 2019 HMI Capital, LLC By: Emily M. Brakebill Name: Emily M. Brakebill Title: Partner HMI Capital Partners, L.P. By: HMI Capital, LLC, its General Partner By: Emily M. Brakebill Name: Emily M. Brakebill Title: Partner