X0609 4 2026-05-12 0 0001921963 Atmus Filtration Technologies Inc. ATMU 0001809708 Donoso Diego false 26 CENTURY BOULEVARD NASHVILLE TN 37214 1 0 0 0 0 Common Stock 2026-05-12 4 A 0 2619 0 A 11697 D Reflects Restricted Share Units ("RSUs") granted on May 12, 2026, as part of the 2026-2027 Annual Director Compensation. The RSUs fully vest on May 12, 2027, or the next Annual Meeting of Stockholders, whichever comes first. /s/Tiffany B. Williams, Attorney-in-Fact for Diego Donoso 2026-05-13