Exhibit 99.1 Solaris Oilfield Infrastructure Announces Fourth Quarter and Full Year 2023 Results and Announces Continued Shareholder Returns for First Quarter 2024 Fourth Quarter 2023 Summary Results and Shareholder Return Highlights HOUSTON, Texas, February 26, 2024 — (BUSINESS WIRE) — Solaris Oilfield Infrastructure, Inc. (NYSE:SOI) ("Solaris" or the "Company"), today announced fourth quarter and full year 2023 financial and operational results. "2023 was a strong year for Solaris on multiple fronts. We g ...