Regulation FD Disclosure. On August 14, 2026, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.06 per common share, payable on September 9, 2026, to shareholders of record at the close of business on August 27, 2026. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed”…

Results of Operations and Financial Condition. On August 7, 2026, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the second quarter of 2026. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Exchan…

Regulation FD Disclosure. On May 13, 2026, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.055 per common share, payable on June 10, 2026, to shareholders of record at the close of business on May 26, 2026. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed” for purpo…

Senior Vice President & Chief Supply Chain Officer — Kevin Carpenter: The company appointed a new Senior Vice President & Chief Supply Chain Officer with significant industry experience.

Results of Operations and Financial Condition. On May 1, 2026, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the first quarter of 2026. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Exchange A…

Results of Operations and Financial Condition. On February 13, 2026, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the fourth quarter and year ended December 31, 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section…

Regulation FD Disclosure. On February 9, 2026, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.055 per common share, payable on March 4, 2026, to shareholders of record at the close of business on February 20, 2026. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed”…

Director — Heath Sharp: Heath Sharp was appointed as an independent director to the Board of Atmus Filtration Technologies Inc.

Creation of A Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The information described above under

Entry into a Material Definitive Agreement. On January 7, 2026 (the “Closing Date”), Atmus Filtration Technologies Inc. (the “Registrant”), as the Parent Borrower, and Atmus Filtration Inc., as the Opco Borrower (collectively, the “Borrowers”), entered into an Amended and Restated Credit Agreement (the “Credit Agreement”) among the Borrowers, Bank of America, N.A., as administrative agent, a lender, an L/C issuer and swingline lender, the other lenders party thereto and certain subsidiaries o…

Creation of a Direct Financial Obligation. The information set forth in

Entry into a Material Definitive Agreement. On November 21, 2025, Atmus Filtration Technologies Inc., a Delaware corporation (the “ Registrant, ” “ we ,” “ us ” or “ our ”), entered into a stock purchase agreement (the “ Purchase Agreement ”) with Cummins Filtration Inc., an Indiana corporation and a wholly-owned subsidiary of the Registrant (the “ Buyer ”), and Air Distribution Technologies, Inc., a Delaware corporation (the “ Seller ”), pursuant to which the Buyer agreed to purchase all of…

Regulation FD Disclosure. On November 12, 2025, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.055 per common share, payable on December 10, 2025 to shareholders of record at the close of business on November 25, 2025. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “fil…

Results of Operations and Financial Condition. On November 7, 2025, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the third quarter of 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Excha…

Regulation FD Disclosure. On August 13, 2025, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.055 per common share, payable on September 10, 2025 to shareholders of record at the close of business on August 26, 2025. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed”…

Results of Operations and Financial Condition. On August 8, 2025, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the second quarter of 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Exchan…

Regulation FD Disclosure. On May 21, 2025, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.05 per common share, payable on June 18, 2025 to shareholders of record at the close of business on June 3, 2025. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed” for purpose…

Chief Legal Officer — Laura Heltebran: The filing announces the appointment of an external candidate as Senior Vice President, Chief Legal Officer & Corporate Secretary, which is a new hire rather than a departure.

Results of Operations and Financial Condition. On May 2, 2025, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the first quarter of 2025. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Exchange A…

Results of Operations and Financial Condition. On February 21, 2025, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the fourth quarter and year ended December 31, 2024. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section…

Regulation FD Disclosure. On February 19, 2025, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.05 per common share, payable on March 19, 2025 to shareholders of record at the close of business on March 4, 2025. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed” for…

Results of Operations and Financial Condition. On November 8, 2024, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the third quarter of 2024. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Excha…

Regulation FD Disclosure. On October 18, 2024, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend in the amount of $0.05 per common share, payable on November 13, 2024 to shareholders of record at the close of business on October 31, 2024. A copy of the press release is furnished as Exhibit 99.1 hereto. The information furnished in this Item 7.01, including Exhibit 99.1, is not deemed to be “filed”…

Results of Operations and Financial Condition. On August 2, 2024, Atmus Filtration Technologies Inc. (“the Company”) issued the attached press release reporting its financial results for the second quarter of 2024. A copy of this press release is furnished as Exhibit 99.1 to this Current Report on Form 8-K and is incorporated herein by reference. The information furnished in this Item 2.02, including Exhibit 99.1, is not deemed to be “filed” for purposes of Section 18 of the Securities Exchan…

Other Events. On July 18, 2024, Atmus Filtration Technologies Inc. (the “Company”) issued a press release reporting that its Board of Directors declared a quarterly cash dividend payment of $0.05 per common share, payable on August 14, 2024 to shareholders of record at the close of business on August 1, 2024 and approved a stock repurchase program which authorizes the Company to purchase up to $150 million of its outstanding shares of common stock. Stock repurchases may be executed through op…