X0508 4 2025-12-17 0001697500 Solaris Energy Infrastructure, Inc. SEI 0001705383 Durrett Cynthia M. 9651 KATY FREEWAY SUITE 300 HOUSTON TX 77024 true true false false CHIEF ADMINISTRATIVE OFFICER 0 Class A Common Stock 2025-12-17 4 S 0 47011 44.62 D 131152 D Class B Common Stock 165038 D Solaris Energy Infrastructure, LLC Units Class A Common Stock 165038 165038 D The reported price in Column 4 is a weighted average sale price. These shares were sold in multiple transactions at prices ranging from $44.21 to $45.47 per share. The reporting person undertakes to provide to the Issuer, any security holder of the Issuer, or the staff of the U.S. Securities and Exchange Commission (the "SEC"), upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote. Includes 86,929 shares of Class A common stock subject to previously granted Restricted Stock Awards that remain subject to vesting. Each share of Class B common stock has no economic rights but entitles the holder to one vote on all matters to be voted on by the stockholders generally. Subject to the terms of the Solaris LLC Agreement, the Solaris LLC Units (together with a corresponding number of shares of Class B common stock) are exchangeable from time to time for shares of Class A common stock of the Issuer. /s/ Christopher M. Powell, Attorney-in-Fact 2025-12-18