144 0002036327 XXXXXXXX LIVE 0001697500 Solaris Energy Infrastructure, Inc. 001-38090 9651 Katy Freeway, Suite 300 Houston TX 77024 281-501-3070 KTR Management Company, LLC Owner Class A common stock, par value $0.01 per share Morgan Stanley & Co. LLC

1585 Broadway New York NY 10036

4000000 118000000.00 67582883 08/06/2025 NYSE Units of Solaris Energy Infrastructure, LLC and an equal number of shares of Class B common stock, par value $0.00 per share 09/11/2024 Contribution/Acquisition Solaris Energy Infrastructure, Inc. N 8114783 09/11/2024 Contribution Consideration Y 08/07/2025 Christopher M. Powell