144 0001757813 XXXXXXXX LIVE 0001693256 Select Water Solutions, Inc. 001-38066 1233 W. Loop South, Suite 140 Houston TX 77027 940-668-1818 John Schmitz Affiliate Class A Common Stock J.P. Morgan Securities LLC

270 Park Avenue, 10th Floor New York NY 10017

608694 6671286.24 104908604 11/10/2025 NYSE Class A Common Stock 02/27/2025 Private Sale B-29 Investments, L.P. N 608694 02/27/2025 Cash Y The shares filed today will be sold by the following 7 Trusts, John Schmitz as Trustee for each: The Schmitz 2020 Delaware Trust, The John Schmitz Trust uad 11/17/12 Non Ex Trust FBO Suzanne Schmitz,The John Schmitz Trust uad 11/17/12 Non Ex Trust FBO Shelby Schmitz, The John Schmitz Trust uad 11/17/12 Non Ex Trust FBO Tiffany Ward, Sandra Schmitz Trust uad 11/7/12 Non Ex Trust FBO Shelby Schmitz, Sandra Schmitz Trust uad 11/7/12 Non Ex Trust FBO Suzanne Schmitz, Sandra Schmitz Trust uad 11/7/12 Non Ex Trust FBO Tiffany Ward 11/10/2025 /s/ J.P. Morgan Securities LLC as agent and attorney-in-fact for John Schmitz