Sotera Health Stockholders Agreement Terminates; Sponsors Exit

On May 13, 2026, Sotera Health Company's Stockholders Agreement, dated November 19, 2020, terminated following the completion of an offering where affiliates of Warburg Pincus LLC and GTCR LLC (the "Sponsors") sold all their 31,838,253 shares of common stock. The shares were sold at $15.168 per share, with the Company not issuing any shares or receiving any proceeds from the transaction. As a result, the Sponsors no longer own common stock and their special corporate governance rights, including the right to designate directors, have ended.