Select Water Solutions, Inc.

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

SCHEDULE 14A

Proxy Statement Pursuant to Section 14(a) of the

Securities Exchange Act of 1934 (Amendment No. )

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Filed by the Registrant

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Filed by a Party other than the Registrant

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CHECK THE APPROPRIATE BOX:

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Preliminary Proxy Statement

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Confidential, for Use of the Commission Only (as permitted by Rule 14a-6(e)(2))

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Definitive Proxy Statement

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Definitive Additional Materials

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Soliciting Material under §240.14a-12

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Select Water Solutions, Inc.

(Name of Registrant as Specified In Its Charter)

(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

PAYMENT OF FILING FEE (CHECK ALL BOXES THAT APPLY):

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No fee required

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Fee paid previously with preliminary materials

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Fee computed on table in exhibit required by Item 25(b) per Exchange Act Rules 14a-6(i)(1) and 0-11

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NOTICE OF ANNUAL MEETING

OF STOCKHOLDERS AND

PROXY STATEMENT

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LETTER FROM OUR CHAIRMAN, PRESIDENT AND

CHIEF EXECUTIVE OFFICER

Dear Fellow Stockholder:

It is my pleasure to invite you to attend the 2025 Annual Meeting of Stockholders of Select Water Solutions, Inc. (the “Annual Meeting”) to be held on Friday, May 2, 2025, at 1:00 p.m. Central Time, at Select Water Solutions, Inc., 1820 N I-35, Gainesville, TX 76240.

The following Notice of Annual Meeting describes the business to be conducted at the Annual Meeting. We encourage you to review the materials and vote your shares.

THE BOARD UNANIMOUSLY RECOMMENDS THAT YOU CAST YOUR VOTE “FOR”

PROPOSALS 1, 2, AND 3, AS DESCRIBED IN THE PROXY STATEMENT.

The Board has fixed the close of business on March 6, 2025 as the record date (the “Record Date”) for the determination of stockholders entitled to notice of, and to vote at, the Annual Meeting or any postponement or adjournment thereof. Accordingly, only stockholders of record at the close of business on the Record Date are entitled to notice of, and shall be entitled to vote at, the Annual Meeting or any postponement or adjournment thereof. Attendance is limited to stockholders of the Company, their proxy holders, and our guests. Stockholders holding stock in brokerage accounts must bring a legal proxy or other evidence of share ownership as of March 6, 2025 to be admitted to the meeting.

Whether or not you plan to attend the Annual Meeting, it is important that your shares be represented and voted at the meeting. You can ensure that your shares are represented and voted at the meeting by submitting your proxy card or voting instruction form over the Internet or by telephone. If you received your proxy materials by mail, you may also submit your proxy card or voting instruction form by mail by using the traditional proxy card or voting instruction form that was included. Instructions for these convenient ways to vote are set forth on both the Notice of Internet Availability of Proxy Materials and the proxy card or voting instruction form.

If the Annual Meeting is postponed or adjourned, your proxy will still be valid and may be voted at the rescheduled meeting. You may change or revoke your proxy until it is voted. If you are planning to attend the Annual Meeting, please check the website one week prior to the meeting date. To ensure your vote is counted, we encourage you to vote your shares prior to the Annual Meeting.

Thank you for your continued support of Select Water Solutions, Inc.

Sincerely,

John D. Schmitz

Chairman of the Board, President, and

Chief Executive Officer

NOTICE OF ANNUAL MEETING OF STOCKHOLDERS

Stockholders will also transact any other business that may be properly presented at the Annual Meeting. The accompanying Proxy Statement is dated March 18, 2025 and will be made available to stockholders beginning on or about March 18, 2025. The accompanying Proxy Statement more fully describes these matters. At this time, we have not received notice of any other matter that may be properly presented at the Annual Meeting.

Only holders of common stock of record at the close of business on March 6, 2025, are entitled to notice of and to vote at the Annual Meeting and any adjournments or postponements thereof. For security purposes, you may be required to present evidence of your share ownership and a valid, government-issued photo identification, such as a driver’s license or passport, to gain admission to the Annual Meeting. The use of cameras, sound recording equipment, communication devices or other similar equipment is prohibited. Packages, boxes, handbags, briefcases, and other items are subject to inspection.

Your vote is important — Please submit your proxy card or voting instruction form over the Internet or by telephone by following the instructions on the Notice of Internet Availability of Proxy Materials about how to view the proxy materials. If you received your proxy materials by mail, you may submit your proxy card or voting instruction form over the Internet or by telephone or by completing, signing, dating, and promptly mailing your proxy card or voting instruction form that was included. A postage-paid return envelope was provided. If you attend the Annual Meeting, you may vote in person.

By Order of the Board of Directors,

Christina M. Ibrahim

Senior Vice President, General Counsel,

Chief Compliance Officer and Corporate Secretary