Atmus shareholders elect directors, approve executive compensation, and ratify auditor at 2024 annual meeting

Proposal 4 - Ratification of Independent Registered Accounting Firm The Company’s stockholders ratified the appointment of PricewaterhouseCoopers LLC as the Company’s independent auditor for the fiscal year ending December 31, 2024. Voting results on this proposal were as follows: For Against Abstain 71,996,591 17,896 11,936

Proposal 1 - Election of Directors The Company’s stockholders elected, with the respective votes set forth opposite their names, the following persons to the Company’s Board of Directors to hold office for a three-year term until the 2027 annual meeting of stockholders or until their successors are duly elected and qualified: Director Nominees For Against Abstain Broker Non-Vote Gretchen R. Haggerty 38,389,701 24,563,968 6,873 9,065,881 Jane A. Leipold 40,597,134 22,355,988 7,420 9,065,881

Proposal 2 - Advisory Vote on Executive Compensation The Company’s stockholders, by voting for a non-binding advisory proposal, approved the executive compensation of the Company’s named executive officers. Voting results on this proposal were as follows: For Against Abstain Broker Non-Vote 58,909,106 4,031,418 20,018 9,065,881

Leipold 40,597,134 22,355,988 7,420 9,065,881 Proposal 2 - Advisory Vote on Executive Compensation The Company’s stockholders, by voting for a non-binding advisory proposal, approved the executive compensation of the Company’s named executive officers.

Proposal 3 - Advisory Vote on the Frequency of Executive Compensation Votes The Company’s stockholders, by voting for a non-binding advisory proposal, approved an annual frequency of an advisory vote on executive compensation. Based upon the results of the stockholder vote on the frequency of an advisory vote on executive compensation, the Company has decided to include an advisory stockholder vote on executive compensation annually in its proxy statement until the next required vote on the frequency of stockholder votes on executive compensation. Voting results on this proposal were as follows: 1 Year 2 Years 3 Years Abstain Broker Non-Vote 62,466,214 16,338 208,232 269,758 9,065,881