MCW Mister Car Wash Inc

Filed pursuant to Rule 424(b)(3)
Registration Statement No. 333-258186

Prospectus Supplement No. 2

(To Prospectus dated July 29, 2021)

This prospectus supplement updates, amends and supplements the prospectus dated July 29, 2021 (the “Prospectus”), which forms a part of our Registration Statement on Form S-1 (Registration No. 333-258186). Capitalized terms used in this prospectus supplement and not otherwise defined herein have the meanings specified in the Prospectus.

This prospectus supplement is being filed to update, amend and supplement the information included in the Prospectus with the information contained in Item 5.02 of our Current Report on Form 8-K filed with the SEC on October 6, 2021, which is set forth below.

This prospectus supplement is not complete without the Prospectus. This prospectus supplement should be read in conjunction with the Prospectus, which is to be delivered with this prospectus supplement, and is qualified by reference thereto, except to the extent that the information in this prospectus supplement updates or supersedes the information contained in the Prospectus. Please keep this prospectus supplement with your Prospectus for future reference.

Mister Car Wash, Inc.’s common stock is quoted on the New York Stock Exchange under the symbol “MCW.” On October 5, 2021, the closing price of our common stock was $17.91.

INVESTING IN OUR SECURITIES INVOLVES CERTAIN RISKS. SEE “RISK FACTORS” BEGINNING ON PAGE 15 OF THE PROSPECTUS.

Neither the Securities and Exchange Commission nor any state securities commission has approved or disapproved of these securities or determined if the Prospectus or this prospectus supplement is truthful or complete. Any representation to the contrary is a criminal offense.

The date of this prospectus supplement is October 6, 2021.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENT REPORT

PURSUANT TO SECTION 13 OR 15(d)

OF THE SECURITIES EXCHANGE ACT OF 1934

Date of report (Date of earliest event reported): October 1, 2021

222 E 5^th Street

Tucson, Arizona 85705

(Address of Principal Executive Offices) (Zip Code)

(520) 615-4000

(Registrant’s telephone number, including area code)

N/A

(Former name or former address, if changed since last report)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

Indicate by check mark whether the registrant is an emerging growth company as defined in Rule 405 of the Securities Act of 1933 (§ 230.405 of this chapter) or Rule 12b-2 of the Securities Exchange Act of 1934 (§ 240.12b-2 of this chapter).

Emerging growth company  ☒

If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act.  ☐

On October 1, 2021, the Board of Directors (the “Board”) of Mister Car Wash, Inc. (the “Company”) increased the size of the Board from eight (8) to ten (10) directors and appointed (i) each of Veronica Rogers and Ronald Kirk to serve as a Class II director on the Company’s Board, (ii) Veronica Rogers to serve as a member of the Board’s Compensation Committee and (iii) Ronald Kirk to serve as a member of the Board’s Nominating and Corporate Governance Committee, in each case, effective October 1, 2021. Each of Ms. Rogers and Mr. Kirk will serve for a term expiring at the Company’s annual meeting of stockholders to be held in 2023 and until such director’s respective successor is duly elected and qualified or such director’s earlier death, disqualification, resignation or removal.

Ms. Rogers has served as Senior Vice President, Head of Global Sales and Business Operations of Sony Interactive Entertainment LLC since January 2020. From 2006 to 2020, Ms. Rogers served in various managerial roles in sales, marketing and business development at Microsoft Corporation (“Microsoft”), most recently as Vice President, Device Partner, Sales from 2018 to 2020. Ms. Rogers received a B.A. in Economics and a Master of Arts degree in Economics from the University of Cambridge, as well as a Master of Science degree in European Political Economy and Political Science from the London School of Economics.

Mr. Kirk has been Senior Of Counsel at the law firm of Gibson, Dunn & Crutcher LLP (“Gibson Dunn”) since March 2013 and co-chairs the International Trade Practice Group. From 2009 until 2013, Mr. Kirk served as the U.S. Trade Representative under President Obama, where he focused on the development and enforcement of U.S. intellectual property law. Prior to serving as U.S. Trade Representative, from 2005 to 2009, Mr. Kirk was a partner of the law firm of Vinson & Elkins LLP and, from 1994 to 2005, was a partner in the Corporate Securities Practice of Gardere Wynne & Sewell LLP. Mr. Kirk currently serves on the board of Texas Instruments Incorporated and of Macquarie Infrastructure Corporation. Mr. Kirk received a B.A. in Political Science and Sociology from Austin College and a J.D. from University of Texas School at Austin of Law.

In accordance with the Company’s Non-Employee Director Compensation Policy (the “Policy”), each of Ms. Rogers and Mr. Kirk (i) was granted, effective October 1, 2021 (the “grant date”), 3,865 restricted stock units (“RSUs”), which represents a prorated amount of the Annual Award (as defined below) having a grant date fair value of $100,000 (the “Initial Award”) and (ii) will be eligible to receive, on the date of each annual meeting of the Company’s stockholders (an “Annual Meeting”), subject to his or her continued service on the Board following the date of such Annual Meeting, an award of RSUs having an aggregate fair value on the date of such Annual Meeting of $100,000 (the “Annual Award”). Each of the Initial Award and the Annual Award vest on the earlier of (a) the day immediately preceding the date of the first Annual Meeting following the date of grant and (b) the first anniversary of the date of grant, subject to the director’s continued service on the Board through the applicable vesting date. In addition, in accordance with the Policy, each of Ms. Rogers and Mr. Kirk is eligible to receive annual cash compensation of $75,000 for serving on the Board.

Each of Ms. Rogers and Mr. Kirk is party to the Company’s standard form indemnification agreement in the form filed as Exhibit 10.6 to the Company’s Registration Statement on Form S-1/A (File No. 333-256697), filed with the Securities and Exchange Commission on June 17, 2021.

On October 6, 2021, the Company issued a press release announcing Ms. Rogers’ and Mr. Kirk’s appointments. A copy of the press release is filed as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated into this Item 7.01 by reference.

The information in this Item 7.01 of this Current Report on Form 8-K (including Exhibit 99.1) shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the “Exchange Act”), or otherwise subject to the liabilities of that Section, nor shall it be deemed to be incorporated by reference into any filing of the Company under the Securities Act of 1933, as amended, or the Exchange Act, except as expressly set forth by specific reference in such filing.