Insider transactions

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Danhakl, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Danhakl disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI that were cancelled as part of the Transaction.
• F4 Represents shares owned by GEI VI.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F8 Represents shares of Common Stock previously owned by GEI Side VI that were cancelled as part of the Transaction.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.
• F9 Represents shares of Common Stock owned by GEI Side VI.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F10 Represents shares of Common Stock previously owned by Associates VI-A that were cancelled as part of the Transaction.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.
• F11 Represents shares of Common Stock owned by Associates VI-A.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F12 Represents shares of Common Stock previously owned by Associates VI-B that were cancelled as part of the Transaction.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.
• F13 Represents shares of Common Stock owned by Associates VI-B.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI that were cancelled as part of the Transaction.
• F4 Represents shares owned by GEI VI.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F8 Represents shares of Common Stock previously owned by GEI Side VI that were cancelled as part of the Transaction.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.
• F9 Represents shares of Common Stock owned by GEI Side VI.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F10 Represents shares of Common Stock previously owned by Associates VI-A that were cancelled as part of the Transaction.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.
• F11 Represents shares of Common Stock owned by Associates VI-A.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F12 Represents shares of Common Stock previously owned by Associates VI-B that were cancelled as part of the Transaction.
• F5 GEI Capital VI, LLC (Capital) is the general partner of GEI VI and GEI Side VI. Green VI Holdings, LLC (Holdings) is a limited partner of GEI VI and GEI Side VI. Leonard Green Partners, L.P. (LGP) is the management company of GEI VI and GEI Side VI, and an affiliate of Capital and Holdings. Peridot Coinvest Manager LLC (Peridot) is the manager of Associates VI-A and Associates VI-B, and an affiliate of Capital and Holdings. LGP Management, Inc. (LGPM) is the general partner of LGP.
• F6 Each of GEI VI, GEI Side VI, Associates VI-A, Associates VI-B, Peridot, LGP, LGPM, Capital, and Holdings, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F7 Each of the Reporting Persons disclaims beneficial ownership of the shares of Common Stock reported herein and not held for record by such Reporting Person, except to the extent of its pecuniary interest therein. This report shall not otherwise be deemed an admission that the Reporting Persons are the beneficial owners of such securities not held of record by the respective Reporting Person, for purposes of Section 16 of the Exchange Act or for any other purpose.
• F13 Represents shares of Common Stock owned by Associates VI-B.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Seiffer, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Seiffer disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Seiffer, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Seiffer disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F3 At the Effective Time, each vested and unvested outstanding stock option, fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the excess, if any, of the Merger Consideration over the applicable exercise price per share of the Common Stock subject to such stock option multiplied by (ii) the number of shares of Common Stock subject to such stock option.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.
• F3 This amount includes 4,000 shares purchased under the Mister Car Wash, Inc. Employee Stock Purchase Plan since the date of last filing.

Other acquisition or disposition (describe transaction)

• F4 Pursuant to the Rollover Agreement, dated as of May 18, 2026, among the reporting person and Parent, the reporting person agreed to contribute 15,142.86 shares to Parent (the Rollover) in exchange for indirect equity interests in Parent, effective immediately prior to the Effective Time, as contemplated by the Merger Agreement. For purposes of the Rollover, the reporting person's shares were valued at $7.00 per share.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Other acquisition or disposition (describe transaction)

• F3 Pursuant to the Rollover Agreement, dated as of May 18, 2026, among the reporting person and Parent, the reporting person agreed to contribute a total of 1,146,428.57 shares to Parent (the Rollover) in exchange for indirect equity interests in Parent, effective immediately prior to the Effective Time, as contemplated by the Merger Agreement. For purposes of the Rollover, the reporting person's shares were valued at $7.00 per share.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Other acquisition or disposition (describe transaction)

• F3 Pursuant to the Rollover Agreement, dated as of May 18, 2026, among the reporting person and Parent, the reporting person agreed to contribute a total of 1,146,428.57 shares to Parent (the Rollover) in exchange for indirect equity interests in Parent, effective immediately prior to the Effective Time, as contemplated by the Merger Agreement. For purposes of the Rollover, the reporting person's shares were valued at $7.00 per share.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Danhakl, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Danhakl disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Galashan, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Galashan disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Galashan, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Galashan disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Other acquisition or disposition (describe transaction)

• F3 Pursuant to the Rollover Agreement, dated as of May 18, 2026, among the reporting person and Parent, the reporting person agreed to contribute 43,285.71 shares to Parent (the Rollover) in exchange for indirect equity interests in Parent, effective immediately prior to the Effective Time, as contemplated by the Merger Agreement. For purposes of the Rollover, the reporting person's shares were valued at $7.00 per share.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F4 At the Effective Time, each vested and unvested outstanding stock option, fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the excess, if any, of the Merger Consideration over the applicable exercise price per share of the Common Stock subject to such stock option multiplied by (ii) the number of shares of Common Stock subject to such stock option.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Suer, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Suer disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Other acquisition or disposition (describe transaction)

• F1 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).
• F2 Immediately prior to the effective time of the Merger, pursuant to the Contribution Agreement, dated February 17, 2026, by and among Parent, Green Equity Investors VI, L.P. (GEI VI), Green Equity Investors Side VI, L.P. (GEI Side VI), LGP Associates VI-A LLC (Associates VI-A) and LGP Associates VI-B LLC (Associates VI-B), the shares of the Issuer's Common Stock (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 (together with the Merger, the Transaction). 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.
• F3 Represents shares of Common Stock previously owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B that were cancelled as part of the Transaction. Of the shares of Common Stock reported, 134,812,845 were held by GEI VI, 80,348,253 were held by GEI Side VI, 315,683 were held by Associates VI-A, and 3,736,298 were held by Associates VI-B.
• F4 Represents shares owned by GEI VI, GEI Side VI, Associates VI-A and Associates VI-B.
• F5 Mr. Suer, directly (whether through ownership or position), or indirectly through one or more intermediaries, may be deemed for purposes of Section 16 of the Securities Exchange Act of 1934, as amended (the Exchange Act), to be the indirect beneficial owner of some or all of the shares of Common Stock held by GEI VI, GEI Side VI, Associates VI-A, or Associates VI-B and, therefore, a ten percent holder hereunder.
• F6 Mr. Suer disclaims beneficial ownership of the shares of Common Stock reported herein, except to the extent of his pecuniary interest therein. This report shall not otherwise be deemed an admission that he is the beneficial owner of such securities for purposes of Section 16 of the Exchange Act or for any other purpose.

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Other acquisition or disposition (describe transaction)

• F3 Pursuant to the Rollover Agreement, dated as of May 18, 2026, among the reporting person and Parent, the reporting person agreed to contribute 86,428.57 shares to Parent (the Rollover) in exchange for indirect equity interests in Parent, effective immediately prior to the Effective Time, as contemplated by the Merger Agreement. For purposes of the Rollover, the reporting person's shares were valued at $7.00 per share.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).

Exercise or conversion of derivative security exempted pursuant to Rule 16b-3

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F2 At the Effective Time, each outstanding restricted stock unit fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the Merger Consideration multiplied by (ii) the number of shares of Common Stock subject to such award of restricted stock unit.

Disposition to the issuer of issuer equity securities pursuant to Rule 16b-3(e)

• F1 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). At the effective time of the Merger (the Effective Time), each outstanding share of Common Stock (other than certain shares described in the Merger Agreement) was cancelled and automatically converted into the right to receive $7.00 in cash, without interest (the Merger Consideration).
• F4 At the Effective Time, each vested and unvested outstanding stock option, fully vested, was cancelled, and converted into the right to receive a lump sum cash payment, without interest, equal to the product of (i) the excess, if any, of the Merger Consideration over the applicable exercise price per share of the Common Stock subject to such stock option multiplied by (ii) the number of shares of Common Stock subject to such stock option.