Atmus Filtration Technologies Inc.

Item 5.02. Departure of Directors or Certain Officers; Election of Directors; Appointment of Certain Officers; Compensatory Arrangements of Certain Officers.

On October 21, 2026, Atmus Filtration Technologies Inc. (the "Company") received notice from Renee Swan of her resignation of employment with the Company, including her roles as Senior Vice President and Chief People Officer and from each other position, if any, she held as an officer of the Company or any of its subsidiaries, effective November 11, 2026 (the "Effective Date"), in order to pursue other opportunities. Ms. Swan's resignation did not result from any disagreement with the Company on any matter relating to the Company's operations, policies or practices.

Laura Heltebran, Senior Vice President, Chief Legal Officer and Corporate Secretary, has agreed to assume the role of Chief People Officer as of the Effective Date on an interim basis until the Company names a permanent replacement. Item 9.01 Financial Statements and Exhibits. The following exhibits are being filed as part of this Report. Exhibit No. Description 104 Cover Page Interactive Data File (embedded with the Inline XBRL Document).