X0202 SCHEDULE 13G/A 0001531051 XXXXXXXX LIVE 1 Common Stock, par value $0.01 per share 05/19/2026 0001853513 Mister Car Wash, Inc. 60646V105 222 E. 5th Street Tucson AZ 85705 Rule 13d-1(d) Green Equity Investors VI, L.P. DE 0 0 0 0 0 N 0 PN Green Equity Investors Side VI, L.P. DE 0 0 0 0 0 N 0 PN GEI Capital VI, LLC DE 0 0 0 0 0 N 0 OO (Limited Liability Company) LGP Management, Inc. DE 0 0 0 0 0 N 0 CO Leonard Green & Partners, L.P. DE 0 0 0 0 0 N 0 PN Green VI Holdings, LLC DE 0 0 0 0 0 N 0 OO (Limited Liability Company) LGP Associates VI-A LLC DE 0 0 0 0 0 N 0 OO (Limited Liability Company) LGP Associates VI-B LLC DE 0 0 0 0 0 N 0 OO (Limited Liability Company) Peridot Coinvest Manager LLC DE 0 0 0 0 0 N 0 OO (Limited Liability Company) Mister Car Wash, Inc. 222 E. 5th Street, Tucson, Arizona 85705 Each of the following is hereinafter individually referred to as a "Reporting Person" and collectively as the "Reporting Persons:" A. Green Equity Investors VI, L.P. B. Green Equity Investors Side VI, L.P. C. GEI Capital VI, LLC D. Leonard Green & Partners, L.P. E. LGP Management, Inc. F. Green VI Holdings, LLC G. LGP Associates VI-A LLC H. LGP Associates VI-B LLC I. Peridot Coinvest Manager LLC As of the date hereof, Green Equity Investors VI, L.P., a Delaware limited partnership ("GEI VI"), is the direct owner of 0 shares of Common Stock of the Issuer, Green Equity Investors Side VI, L.P., a Delaware limited partnership ("GEI Side VI"), is the direct owner of 0 shares of Common Stock of the Issuer, LGP Associates VI-A LLC, a Delaware limited liability company ("Associates VI-A"), is the direct owner of 0 shares of Common Stock of the Issuer, and LGP Associates VI-B LLC, a Delaware limited liability company ("Associates VI-B"), is the direct owner of 0 shares of Common Stock of the Issuer. GEI Capital VI, LLC, a Delaware limited liability company, is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC, a Delaware limited liability company, is a limited partner of GEI VI and GEI Side VI. Leonard Green & Partners, L.P., a Delaware limited partnership ("LGP"), is the management company of GEI VI and GEI Side VI. LGP Management, Inc., a Delaware corporation, is the general partner of LGP. Peridot Coinvest Manager LLC, a Delaware limited liability company, is the manager of each of Associates VI-A and Associates VI-B. The address of each of the Reporting Persons is 11111 Santa Monica Boulevard, Suite 2000, Los Angeles, CA 90025 Each of the Reporting Persons is organized in the state of Delaware. Y See response to Item 9 on each cover page. In connection with the terms of an Agreement and Plan of Merger, dated February 17, 2026 (the "Merger Agreement"), by and among the Issuer, MCW Parent, LP ("Parent"), Boson Merger Sub, Inc., a wholly owned subsidiary of Parent ("Merger Sub"), and, solely for purposes of certain provisions in the Merger Agreement, Mister Car Wash Holdings, Inc., a wholly owned subsidiary of the Issuer, Merger Sub merged with and into the Issuer, with the Issuer continuing as the surviving corporation (the "Merger"). Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, GEI VI, GEI Side VI, Associates VI-A and Associates VI-B, the shares of the Issuer's Common Stock, par value $0.01 (the "Shares"), owned by the Reporting Persons were contributed and assigned to Parent in exchange for equity interests in Parent. In accordance with the terms of the Merger Agreement, at the effective time of the Merger, the Shares were automatically cancelled and extinguished without any conversion thereof or consideration paid therefor. As such, as of May 19, 2026, the Reporting Persons no longer beneficially own any Shares. This filing represents an exit filing for the Reporting Persons. See response to Item 11 on each cover page. See response to Item 5 on each cover page. See response to Item 6 on each cover page. See response to Item 7 on each cover page. See response to Item 8 on each cover page. N Y Y Y Y Y Y Green Equity Investors VI, L.P. By: GEI Capital VI, LLC, its General Partner, By: /s/ Andrew Goldberg 05/19/2026 Green Equity Investors Side VI, L.P. By: GEI Capital VI, LLC, its General Partner, By: /s/ Andrew Goldberg 05/19/2026 GEI Capital VI, LLC By: /s/ Andrew Goldberg 05/19/2026 LGP Management, Inc. By: /s/ Andrew Goldberg 05/19/2026 Leonard Green & Partners, L.P. By: LGP Management, Inc., its General Partner, By: /s/ Andrew Goldberg 05/19/2026 Green VI Holdings, LLC By: LGP Management, Inc., its Manager, By: /s/ Andrew Goldberg 05/19/2026 LGP Associates VI-A LLC By: Peridot Coinvest Manager LLC, its Manager, By: /s/ Andrew Goldberg 05/19/2026 LGP Associates VI-B LLC By: Peridot Coinvest Manager LLC, its Manager, By: /s/ Andrew Goldberg 05/19/2026 Peridot Coinvest Manager LLC By: /s/ Andrew Goldberg 05/19/2026