Cody Ortowski - 05 Mar 2026 Form 4 Insider Report for Select Water Solutions, Inc. (WTTR)

Role: EVP, Business Strategy
Signature: /s/ Ortowski, Cody J by Calla Hackler, as Attorney-in-Fact
Issuer symbol: WTTR
Transactions as of: 05 Mar 2026
Net transactions value: $0
Form type: 4
Filing time: 09 Mar 2026, 16:50:18 UTC
Previous filing: 26 Feb 2026
SEC: View on sec.gov

Reporting Owners (1)

Name	Relationship	Address	Signature	Signature date	CIK
Ortowski Cody	EVP, Business Strategy	1820 N I-35, GAINESVILLE	/s/ Ortowski, Cody J by Calla Hackler, as Attorney-in-Fact	09 Mar 2026	0001698465

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
transaction	WTTR	Class A Common Stock	Award		+27,561	+6.8%	$0.000000^*	429,933	05 Mar 2026	Direct	F1
transaction	WTTR	Class A Common Stock	Tax liability		-10,846	-2.5%	$14.03^*	419,087	05 Mar 2026	Direct	F2
holding	WTTR	Class A Common Stock						1,120,437	05 Mar 2026	By Proactive Investments, LP

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	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.
F2	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.