X0508 4 2024-02-26 0001693256 Select Water Solutions, Inc. WTTR 0001539285 Schmitz John 1233 W. LOOP SOUTH, SUITE 1400 HOUSTON TX 77027 true true false false President/CEO false Class A Common Stock 2024-02-26 4 J false 1500000 8.70 D 2825444 I By B-29 Holdings, LP Class A Common Stock 1574526 D Class A Common Stock 399684 I By B-29 Investments, LP On February 26, 2024, B-29 Holdings, LP transferred 1,500,000 shares to certain of its lenders and received credit for repayment under the credit agreement at a per share value of $8.70, which is the average of the opening and closing prices for WTTR on such date. /s/ John Schmitz 2024-02-26