Atmus Filtration Technologies Inc.

NOTE 1. DESCRIPTION OF THE BUSINESS

Atmus Filtration Technologies Inc. (“Atmus” or the “Company”) is one of the global leaders of filtration products for on-highway commercial vehicles and off-highway agriculture, construction, mining and power generation vehicles and equipment. Atmus designs and manufactures advanced filtration products, principally under the Fleetguard brand, that provide superior asset protection and enable lower emissions. Approximately 14% of Atmus’ net sales in 2024 were generated through first-fit sales to OEMs, where its products are installed as components for new vehicles and equipment. Approximately 86% of Atmus’ net sales in 2024 were generated in the aftermarket, where its products are installed as replacement or repair parts, leading to a strong recurring revenue base. Building on its more than 65-year history, Atmus continues to grow and differentiate itself through its global footprint, comprehensive offering of premium products, technology leadership and multi-channel path to market.

In April 2022, Cummins Inc. (“Cummins”) announced its intention to separate its filtration business (the “Filtration Business”) into a standalone publicly traded company (the “Separation”). In preparation for the Separation from Cummins, Atmus, as its predecessor in interest, was incorporated as a wholly-owned subsidiary of Cummins in Delaware on April 1, 2022 in connection with the planned Separation. Prior to the completion of Atmus’ initial public offering (the “IPO”), Cummins completed, in all material respects, the transfer of the assets and liabilities of the Filtration Business to Atmus and its subsidiaries as detailed in the separation agreement Atmus entered into with Cummins.

On September 30, 2022, and as amended on February 15, 2023, Atmus entered into a $1.0 billion credit agreement (“Credit Agreement”) with a syndicate of banks, providing for a $600 million term loan facility (the “term loan”) and a $400 million revolving credit facility (the “revolving credit facility”), in anticipation of the Separation. Borrowings under the Credit Agreement did not become available until the IPO occurred. The facilities covered by the Credit Agreement will mature on September 30, 2027.

Atmus’ Registration Statement on Form S-1, as amended, filed with the Securities and Exchange Commission (“Commission”) on May 16, 2023, was declared effective on May 25, 2023, and Atmus’ common shares began trading on the New York Stock Exchange under the symbol “ATMU” on May 26, 2023. On May 30, 2023, the IPO was completed through the sale on behalf of certain commercial paper holders of Cummins of 16,243,070 shares of common stock, including the underwriters’ full exercise of their 30-day option to purchase an additional 2,118,661 shares to cover over-allotments. None of the proceeds of the IPO were for the benefit of Atmus. As of the closing of the IPO, Cummins owned approximately 80.5% of the outstanding shares of Atmus common stock.

Upon completion of the IPO, Atmus borrowed $650 million, consisting of proceeds of the term loan and amounts drawn under the revolving credit facility, and paid such amounts to Cummins in partial consideration for the Separation.

On February 14, 2024, Cummins announced an exchange offer whereby Cummins shareholders could exchange all or a portion of Cummins common stock for shares of Atmus common stock owned by Cummins. The divestiture of Atmus shares by Cummins was completed on March 18, 2024 and resulted in the full separation of Atmus and divestiture of Cummins’ entire ownership and voting interest in Atmus (“Full Separation”).

NOTE 2. BASIS OF PRESENTATION

As Atmus became a publicly traded company upon the IPO, its financial statements are now presented on a consolidated basis. In preparation for the IPO, the Company’s historical combined financial statements were prepared on a standalone basis, which reflected a combination of entities under common control that had been

“carved out” of and derived from the historical consolidated financial statements and accounting records of Cummins.

The unaudited financial statements for all periods presented, including the historical results of the Company prior to May 26, 2023, are now referred to as “Condensed Consolidated Financial Statements”, and have been prepared pursuant to the rules and regulationsof the Commission for interim financial information. Accordingly, certain information and footnote disclosures normally included in annual financial statements prepared in accordance with generally accepted accounting principles in the United States of America (“U.S. GAAP”) have been omitted. It is management’s opinion that these financial statements include all normal and recurring adjustments necessary for a fair statement of Atmus’ results of operations, financial position and cash flows. Results of operations for any interim period are not necessarily indicative of future or annual results. These interim statements should be read in conjunction with the audited financial statements and notes thereto included in our Annual Report on Form 10-K for the year ended December 31, 2024.

Certain prior year balances have been reclassified to conform to current year presentation.

Periods Prior to the IPO

Prior to the IPO, Atmus, previously the Filtration Business of Cummins, functioned as part of the larger group of businesses controlled by Cummins and accordingly, utilized centralized functions of Cummins, such as facilities and information technology, to support its operations. A portion of the shared service costs were historically allocated to the Filtration Business. Cummins also performed certain corporate functions for the Filtration Business. The corporate expenses related to the Filtration Business were allocated from Cummins. These allocated costs primarily related to certain governance and corporate functions, including finance, human resources, investor relations, legal, tax, treasury and certain other costs. Where it was possible to specifically attribute such expenses to activities of the Filtration Business, these amounts were charged or credited directly to the Filtration Business without allocation or apportionment. Allocation of other such expenses was based on a reasonable reflection of the utilization of the service provided or benefit received by the Filtration Business for the periods presented prior to the Separation, on a consistent basis, such as a relative percentage of headcount and third-party sales.

Management believes these cost allocations were a reasonable reflection of the utilization of services provided to, or the benefit derived by, the Filtration Business during the period prior to the IPO, though the allocations may not be indicative of the actual costs that would have been incurred had the Filtration Business operated as a standalone public company. Actual costs that may have been incurred if the Filtration Business had been a standalone company would depend on a number of factors, including the chosen organizational structure, whether functions were outsourced or performed by the Filtration Business employees, and strategic decisions made in areas such as manufacturing, selling and marketing, research and development, information technology and infrastructure.

Historically, Atmus’ cash was transferred to Cummins on a daily basis. This arrangement was not reflective of the manner in which Atmus would have been able to finance its operations had it been a standalone business separate from Cummins during each of the periods presented.

Cummins’ debt and related interest expense were not allocated to Atmus for any of the periods presented since Atmus was not the legal obligor of the debt and Cummins’ borrowings were not directly attributable to Atmus.

As the separate legal entities that made up the Filtration Business were not historically held by a single legal entity, Cummins’ net investment in this business (“Net Parent Investment”) was presented in lieu of a controlling interest’s equity in the Condensed Consolidated Financial Statements.

For the Filtration Business, transactions with Cummins affiliates were included in the Condensed Consolidated Statements of Net Income and related balances were reflected as related party receivables and related party payables. Other balances between the Filtration Business and Cummins were considered to be effectively settled in the Condensed Consolidated Financial Statements at the time the transactions were recorded.

As of the IPO Date

In connection with the Separation, Atmus entered into various agreements with Cummins, including a separation agreement. In the separation agreement, there were certain assets and liabilities identified in the schedules, including leases and unrecognized tax liabilities, which were retained by Cummins and were reflected as Net Parent Investment in the Company’s Condensed Consolidated Financial Statements, and those that were transferred to the Company, including additional pension assets, other compensation obligations and certain other assets and liabilities, which were transferred to the Company through Net Parent Investment in the Company’s Condensed Consolidated Financial Statements. These various agreements comprehensively provide a framework for our relationship with Cummins and govern various interim and ongoing relationships between us and Cummins post IPO.

As part of the Separation, Net Parent Investment was reclassified as Additional Paid-in Capital.

Periods Post IPO

Following the IPO, certain services continued to be provided by Cummins under the transition services agreement. The Company incurred certain costs in its establishment as a standalone public company and expects to incur ongoing additional costs associated with operating as an independent, publicly traded company.

Post IPO, Atmus filed a consolidated Federal income tax return and returns in certain other jurisdictions with Cummins.

Post IPO, Retained earnings began to accumulate and the balance reflected on the Condensed Consolidated Balance Sheets reflects earnings for the period May 26, 2023 through September 30, 2025.

Periods Post Full Separation

Following Full Separation, Cummins continued to provide certain services to Atmus under the transition services agreement. The transition services agreement related primarily to administrative services, which were provided through September 2025. Atmus paid Cummins mutually agreed upon fees for these services.

Post Full Separation, Cummins is no longer considered a related party and activity post March 18, 2024, between Atmus and Cummins has been treated as arm’s-length transactions.

Atmus files tax returns in all jurisdictions on its own behalf post Full Separation, and tax balances and effective income tax rates may differ from the amounts reported in the historical periods.

NOTE 3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Significant Accounting Estimates and Judgments

Preparation of financial statements requires management to make estimates and assumptions that affect reported amounts presented and disclosed in our interim Condensed Consolidated Financial Statements. Significant estimates and assumptions in these interim Condensed Consolidated Financial Statements require the exercise of judgment. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be different from these estimates.

Recent Accounting Pronouncements Not Yet Adopted

Income Taxes (Topic 740): Improvements to Income Tax Disclosures

In December 2023, the FASB issued ASU No. 2023-09: Income Taxes (Topic 740): Improvements to Income Tax Disclosures that requires entities to disclose additional information about federal, state, and foreign income taxes primarily related to the income tax rate reconciliation and income taxes paid. The new standard also eliminates certain existing disclosure requirements related to uncertain tax positions and unrecognized deferred tax liabilities. The guidance is effective for our fiscal year ending December 31, 2025, with early adoption permitted. The guidance does not affect recognition or measurement in our consolidated financial statements. We expect this ASU to impact our disclosures with no impact to our results of operations, cash flows or financial condition.

Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 2020-40): Disaggregation of Income Statement Expenses

In November 2024, the FASB issued ASU No. 2024-03, Income Statement - Reporting Comprehensive Income - Expense Disaggregation Disclosures (Subtopic 220-40): Disaggregation of Income Statement Expenses, which requires disclosure of certain costs and expenses on an interim and annual basis in the notes to the consolidated financial statements. The guidance is effective for annual reporting periods beginning after December 15, 2026 and interim periods within annual reporting periods beginning after December 15, 2027. Early adoption is permitted. The guidance is to be applied either prospectively to financial statements issued for reporting periods after the effective date or retrospectively to any or all prior periods presented in the financial statements. We expect this ASU to impact our disclosure with no impact to our results of operations, cash flows or financial condition.

Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Targeted Improvements to the Accounting for Internal Use-Software

In September 2025, the FASB issued ASU No. 2025-06, Intangibles - Goodwill and Other - Internal-Use Software (Subtopic 350-40) - Targeted Improvement to the Accounting for Internal-Use Software, which modernizes the accounting for software costs that are accounted for under ASC 350-40, Intangibles - Goodwill and Other Internal Use-Software. The guidance is effective for annual reporting periods beginning after December 15, 2027, and interim periods within those annual reporting periods. The guidance can be applied on a prospective basis, a modified basis, a modified basis for in-process projects or on retrospective basis. We are assessing the effect of this update on our consolidated financial statements and related disclosures.

NOTE 4. REVENUE

Disaggregation of Revenue

Revenue by Geographic Area

The table below presents Atmus’ combined sales by geographic area. Net sales attributed to geographic areas were based on the location of the customer.

Revenue by Product Category

The table below presents Atmus’ combined sales by product category:

NOTE 5. EQUITY, ROYALTY AND INTEREST INCOME FROM INVESTEES

Equity, royalty and interest income from investees, net of applicable taxes, was as follows:

NOTE 6. INCOME TAXES

In connection with the Separation, the Company entered into a tax matters agreement with Cummins that, among other things, formalized our agreement related to the responsibility for historical tax positions for the period prior to the IPO for jurisdictions where our business was included in the consolidated or combined tax returns of Cummins.

Atmus’ effective tax rate for the three and nine months ended September 30, 2025, was 23.6% and 22.3%, respectively. Atmus’ effective tax rate for the three and nine months ended September 30, 2024, was 18.4% and 20.9%, respectively. The variance in the effective tax rate is driven by an unfavorable change in the mix of earnings among tax jurisdictions and reductions to U.S. tax incentives and credits due to the adoption of the One Big Beautiful Bill Act (“OBBBA”), partially offset by discrete tax items. The Company’s effective tax rate differs from the U.S. statutory rate primarily due to differences in rates applicable to foreign subsidiaries, withholding taxes and state income taxes.

The international tax framework introduced by the Organization for Economic Co-operation and Development under its Pillar Two initiative includes a global minimum tax of 15 percent. Legislation adopting these provisions has been enacted in certain jurisdictions where the Company operates and was effective as of the Company’s 2024 fiscal year. The Company continues to assess this legislation and the Pillar Two provisions do not have a material impact on the Company’s tax expense.

On July 4, 2025, the OBBBA was enacted in the U.S. The OBBBA includes significant provisions, such as the permanent extension of certain expiring provisions of the Tax Cut and Jobs Act, modifications to the international tax framework and the restoration of favorable tax treatment for certain business provisions. The legislation has multiple effective dates, with certain provisions effective in 2025 and others implemented through 2027. The Company has evaluated the OBBBA enacted during the quarter and reflected its impact on the consolidated financial statements. We will continue to evaluate the full impact of these legislative changes as additional guidance becomes available.

NOTE 7. INVENTORIES

Inventories are stated at the lower of cost or net realizable value. Inventories included the following:

NOTE 8. PRODUCT WARRANTY LIABILITY

A tabular reconciliation of the product warranty liability, including accrued product campaigns, was as follows:

Warranty liabilities included in Atmus’ Condensed Consolidated Balance Sheets were as follows:

NOTE 9. DEBT AND BORROWING ARRANGEMENTS

Atmus entered into the Credit Agreement with a syndicate of banks, providing for a term loan and a revolving credit facility, in anticipation of the Separation. Borrowings under the Credit Agreement did not become available under the Credit Agreement until the IPO occurred. The facilities covered by the Credit Agreement will mature on September 30, 2027.

Upon completion of the IPO, we borrowed $650 million under the Credit Agreement, consisting of proceeds of the term loan and amounts drawn under the revolving credit facility, and paid such amounts to Cummins in partial consideration for the Separation.

Borrowings under the Credit Agreement bear interest at varying rates, depending on the type of loan and, in some cases, the rates of designated benchmarks and the applicable election made. Generally, U.S. dollar-denominated loans bear interest at an adjusted term Secured Overnight Financing Rate (“SOFR”) (which includes a 0.10 percent credit spread adjustment to SOFR) for the applicable interest period plus a rate ranging from 1.125 percent to 1.75 percent depending on Atmus’ net leverage ratio. As of September 30, 2025, $577.5 million has been drawn on the term loan andno amount was drawn on the revolving credit facility. The revolving credit facility includes an allowance of up to $50.0 million for outstanding letters of credit drawn under the facility that reduces the availability of funds. As of September 30, 2025, no letters of credit were outstanding. These amounts are included within Long-term debt and Current maturities of long-term debt on the Condensed Consolidated Balance Sheets. As of September 30, 2025, Atmus’ fair value of Long-term debt was approximately $577.5 million, which was derived from Level 2 input measures.

Our credit lines available as of September 30, 2025 and December 31, 2024 include:

(a)Atmus maintains a term loan facility and a revolving credit facility as part of the Credit Agreement. The Credit Agreement includes financial covenants that Atmus maintain certain net leverage, secured net leverage and interest coverage ratios. At September 30, 2025, Atmus was in compliance with all financial covenants under the Credit Agreement. The Credit Agreement also contains customary representations, events of default and covenants, including restrictions on the level of borrowing.

Over the next five years, aggregate principal maturities of our long-term debt are (in millions):

NOTE 10. COMMITMENTS AND CONTINGENCIES

Legal Proceedings

The Company is subject to lawsuits and claims arising out of the ordinary course of its business. The Company does not have any currently pending lawsuits or claims that the Company believes, individually or in the aggregate, will have a material adverse effect on its financial position, results of operations, cash flows, liquidity or capital resources. The Company carries various forms of commercial, property and casualty, product liability and other forms of insurance; however, such insurance may not be applicable or adequate to cover the costs associated with a judgment against the Company with respect to any lawsuit, claim or proceeding. While the Company believes it has established adequate accruals for its expected future liability with respect to pending lawsuits, claims and proceedings, where the nature and extent of any such liability can be reasonably estimated based upon presently available information, there can be no assurance that the final resolution of any existing or future lawsuits, claims or proceedings will not have a material adverse effect on Atmus’ business, results of operations, financial condition or cash flows.

Indemnifications

Periodically, Atmus enters various contractual arrangements where it agrees to indemnify a third-party against certain types of losses. Atmus regularly evaluates the probability of having to incur costs associated with these indemnities and accrue for expected losses that are probable. Because the indemnifications are not related to specified known liabilities, and due to their uncertain nature, Atmus is unable to estimate the maximum amount of the potential loss associated with these indemnifications.

NOTE 11. ACCUMULATED OTHER COMPREHENSIVE LOSS

Following are the changes in Accumulated other comprehensive (loss) income by component for thethree and nine months ended September 30, 2025 and September 30, 2024:

NOTE 12. SHARE REPURCHASE PROGRAM

Effective July 17, 2024, Atmus’ Board of Directors authorized a $150.0 million share repurchase program. The program does not have an expiration date and may be suspended or discontinued at any time. Repurchases under the program are determined by management and are wholly discretionary.

Since inception of the program, the Company repurchased approximately 2.0 million shares of Common stock at an average cost of $40.41 per share, or an aggregate cost of approximately $80.7 million. During the nine months ended September 30, 2025, the Company repurchased approximately 1.5 million shares of Common stock at an average cost of $41.58 per share, or an aggregate cost of approximately $60.7 million, all of which was paid during the period except for approximately $0.9 million settled in October 2025. All share repurchases were funded through available cash on hand. As of September 30, 2025, the Company had approximately $69.3 million in remaining share repurchase capacity.

NOTE 13. RELATIONSHIP WITH RELATED PARTIES

As described in Note 1, Description of the Business, prior to the IPO, Atmus had been managed and operated in the normal course of business with other subsidiaries of Cummins. Accordingly, certain shared costs prior to the IPO have been allocated to Atmus and reflected as expenses in the Condensed Consolidated Financial Statements. Management of Cummins and Atmus consider the allocation methodologies used to be reasonable and appropriate reflections of historical expenses of Cummins attributable to Atmus for purposes of the Condensed Consolidated Financial Statements; however, the expenses reflected in the Condensed Consolidated Financial Statements may not be indicative of the actual expenses that would have been incurred during the periods presented if Atmus historically operated as a separate, stand-alone entity. In addition, the expenses reflected in the Condensed Consolidated Financial Statements may not be indicative of expenses that will be incurred in the future by Atmus.

The Company entered into the separation agreement and transition services agreement with Cummins, among other transaction agreements, all of which govern the parties’ relationship following the IPO and Full Separation. This relationship includes services provided by Cummins to the Company for a fixed term on a service-by-service basis. We pay Cummins mutually agreed-upon fees for the services provided under the transition services agreement. The fees paid to Cummins may not be indicative of costs for the same services provided by another provider.

Related Party Balances

Following the Full Separation, Cummins is no longer considered a related party. Atmus’ sales to Cummins from January 1, 2024 through the date of Full Separation, March 18, 2024, were$65.4 million.

NOTE 14. EARNINGS PER SHARE

Basic net earnings per share (“EPS”) is computed by dividing net earnings by the weighted average number of outstanding common shares. Diluted net EPS reflects the increase in weighted common shares outstanding that would result from the assumed exercise of outstanding stock incentive plan awards calculated using the treasury stock method.

Basic and diluted EPS were calculated as follows:

NOTE 15. SEGMENT REPORTING

We operate our business asone operating segment andone reportable segment. The profit or loss measure used by the chief operating decision maker is net income that is reported on the income statement as consolidated net income. All expense categories reported within the consolidated income statement are significant expenses. Business assets are listed as total consolidated assets on the balance sheet.

NOTE 16. SUPPLEMENTAL BALANCE SHEET DATA

Other assets included the following:

Other accrued expenses included the following:

Other liabilities included the following: