Select Water (NYSE: WTTR) CEO nets stock from PSU vesting and tax withholding

Rhea-AI Filing Summary

Select Water Solutions, Inc. President & CEO John Schmitz reported equity award activity and related tax withholding in Class A common stock. On March 5, 2026, he acquired 125,590 shares at $0.00 per share through a grant/award tied to performance share units earned from a February 24, 2023 award.

To cover tax obligations upon vesting, 49,420 shares were disposed of at $14.03 per share through a tax-withholding transaction, leaving him with 1,017,034 shares held directly after these movements. The filing also lists substantial indirect holdings, including 1,496,626 shares held by a family trust and 265,250 shares held by his spouse, along with additional trusts and investment entities associated with the reporting person.

SEC Form 4

FORM 4

UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Schmitz John

(Last) (First) (Middle)

1820 N I-35

(Street)

GAINESVILLE TX 76240

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Select Water Solutions, Inc. [ WTTR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

X	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President & CEO

3. Date of Earliest Transaction (Month/Day/Year)
03/05/2026

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Class A Common Stock	03/05/2026		A(1)		125,590	A	$0.00	1,066,454	D
Class A Common Stock	03/05/2026		F(2)		49,420	D	$14.03	1,017,034	D
Class A Common Stock								265,250	I	By Spouse
Class A Common Stock								274,138	I	By GRAT(3)
Class A Common Stock								274,137	I	By GRAT(4)
Class A Common Stock								13,126	I	By B-29 GP, LLC
Class A Common Stock								249,243	I	By B-29 Investments, LP
Class A Common Stock								1,496,626	I	By Family Trust
Class A Common Stock								31,372	I	By Family Trust for Child 1
Class A Common Stock								31,373	I	By Family Trust for Child 2
Class A Common Stock								31,373	I	By Family Trust for Child 3
Class A Common Stock								31,372	I	By Family Trust for Child 4
Class A Common Stock								31,373	I	By Family Trust for Child 5
Class A Common Stock								31,373	I	By Family Trust for Child 6

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. The reported shares are represented by performance share units ("PSUs") earned pursuant to the terms of a performance share unit award granted on February 24, 2023, to the reporting person for which the performance conditions were satisfied.

2. Represents shares to be withheld by Select Water Solutions, Inc., a Delaware corporation ("the Issuer") to satisfy tax withholding obligations of the reporting person that arose upon vesting of the PSUs.

3. Shares are held directly by the John David Schmitz 2024 Annuity Trust DTD November 13, 2024, of which the reporting person is the trustee.

4. Shares are held directly by the Sandra Lee Schmitz 2024 Annuity Trust DTD November 13, 2024, of which the reporting person is the trustee.

Remarks:

	/s/ Schmitz, John D by Calla Hackler, as Attorney-in-Fact	03/09/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
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FAQ

What insider transactions did WTTR CEO John Schmitz report on March 5, 2026?

John Schmitz reported a stock award and related tax withholding. He acquired 125,590 Class A common shares at $0.00 via a grant based on earned performance share units, and 49,420 shares were disposed of at $14.03 to satisfy tax obligations triggered by the vesting.

How many Select Water (WTTR) shares does John Schmitz hold directly after this Form 4?

After the reported transactions, John Schmitz holds 1,017,034 Select Water Class A common shares directly. This figure reflects the 125,590-share grant and the 49,420-share tax-withholding disposition recorded on March 5, 2026 in the Form 4 filing.

What was the nature of the 125,590-share award reported by WTTR’s CEO?

The 125,590 shares represent performance share units earned under a February 24, 2023 award. The filing explains that performance conditions were satisfied, converting these units into Class A common stock granted to John Schmitz at $0.00 per share on March 5, 2026.

Why were 49,420 WTTR shares disposed of at $14.03 in this Form 4?

The 49,420 shares disposed of at $14.03 per share were withheld to pay tax obligations. The filing states these shares were retained by Select Water Solutions to satisfy taxes arising when performance share units vested into Class A common stock for John Schmitz.

What indirect Select Water (WTTR) holdings related to John Schmitz are disclosed?

The Form 4 lists several indirect holdings, including 1,496,626 Class A shares held by a family trust and 265,250 shares held by his spouse. Additional shares are held through family trusts for children, GRATs, and entities such as B-29 GP, LLC and B-29 Investments, LP.

Are the reported WTTR insider transactions open-market buys or sales?

The filing does not show open-market trades. It records a grant of 125,590 shares from earned performance share units and a 49,420-share tax-withholding disposition at $14.03 per share, where shares are delivered to the issuer to cover tax liabilities.