Transaction Overview

December 10, 2024 – Solaris Energy Infrastructure, Inc. (“Solaris” or the “Company”) (NYSE: SEI) today announced the pricing of its underwritten public offering of 6,500,000 primary shares of its Class A common stock, par value $0.01 per share (“Class A common stock”), at a public offering price of $24.75 per share, for total net proceeds of approximately $156 million. In connection with the offering, Yorktown Energy Partners X, L.P. (“Yorktown”), a selling stockholder of the Company, has granted the underwriters the option to purchase up to an additional 975,000 shares of Class A common stock (the “Option Shares”) on the same terms and conditions within 30 days. Solaris will use the net proceeds to fund growth capital for additional power generation equipment, including new natural gas turbines and complementary “balance of plant” electrical equipment, to support customer activity. The Company will not receive any proceeds from the sale of the Option Shares offered by Yorktown.

Santander is acting as lead book-running manager and representative of the underwriters. Goldman Sachs & Co. LLC, Piper Sandler and Wolfe Capital Markets and Advisory are acting as book-running managers. Janney Montgomery Scott, Johnson Rice & Company, Pickering Energy Partners, Stifel, Capital One Securities, Morgan Stanley, Roth Capital Partners, TCBI Securities, Inc., and TPH&Co., the energy business of Perella Weinberg Partners, are acting as co-managers.

About Solaris Energy Infrastructure, Inc.

Solaris Energy Infrastructure, Inc. provides scalable equipment-based solutions for use in distributed power generation as well as the management of raw materials used in the completion of oil and natural gas wells. Headquartered in Houston, Texas, Solaris serves multiple U.S. end markets, including energy, data centers, and other commercial and industrial sectors.