X0609 4 2026-03-31 true 0001822479 Sotera Health Co SHC 0001614732 DIMITRIEF ALEXANDER false 9100 SOUTH HILLS BLVD, SUITE 300 BROADVIEW HEIGHTS OH 44147 false true false false Former SVP, GC and Sec. false Common Stock, $0.01 par value per share ("Common Stock") 2026-03-31 4 F false 7941 14.34 D 312040 D These securities represent the number of shares of Common Stock withheld by the Issuer to satisfy the Reporting Person's tax withholding obligations due upon the vesting of 17,135 Restricted Stock Units ("RSUs") granted to the Reporting Person on March 4, 2024. This award was granted pursuant to the terms of an RSU agreement under the Sotera Health Company 2020 Omnibus Incentive Plan ("2020 Incentive Plan"). The 17,135 RSUs under this award vested pursuant to the terms of the RSU agreement upon the Reporting Person's retirement on March 31, 2026. The Power of Attorney for Mr. Dimitrief is filed as an exhibit to the Form 3 filed on November 8, 2022, which is hereby incorporated by reference. Matthew J. Klaben, Attorney-in-Fact 2026-04-02