UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

Form 10-K

x Annual Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the fiscal year ended December 31, 2023 or

o Transition Report Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934 for the transition period from __________ to __________

Commission File Number: 001-41710

Atmus Filtration Technologies Inc.

(Exact name of registrant as specified in its charter)

Delaware	88-1611079
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)

26 Century Boulevard, Nashville, Tennessee 37214

(Address of principal executive offices) (Zip Code)

Registrant’s telephone number, including area code: (615) 514-7339

Securities registered pursuant to Section 12(b) of the Act:

Title of each class	Trading Symbol(s)	Name of each exchange on which registered
Common Stock, $0.0001 par value	ATMU	New York Stock Exchange

Securities registered pursuant to Section 12(g) of the Act: None

Indicate by check mark if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. o Yes x No

Indicate by check mark if the registrant is not required to file reports pursuant to Section 13 or Section 15(d) of the Act. o Yes x No

Indicate by check mark whether the registrant (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. x Yes o No

Indicate by check mark whether the registrant has submitted electronically every Interactive Data File required to be submitted pursuant to Rule 405 of Regulation S-T (§232.405 of this chapter) during the preceding 12 months (or for such shorter period that the registrant was required to submit such files). x Yes o No

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, a smaller reporting company, or an emerging growth company. See the definitions of “large accelerated filer,” “accelerated filer,” “smaller reporting company,” and “emerging growth company” in Rule 12b-2 of the Exchange Act.

Large accelerated filer	o	Accelerated filer	o
Non-accelerated filer	x	Smaller reporting company	o
Emerging growth company	o

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If an emerging growth company, indicate by check mark if the registrant has elected not to use the extended transition period for complying with any new or revised financial accounting standards provided pursuant to Section 13(a) of the Exchange Act. o 

Indicate by check mark whether the registrant has filed a report on and attestation to its management’s assessment of the effectiveness of its internal control over financial reporting under Section 404(b) of the Sarbanes-Oxley Act (15 U.S.C. 7262(b)) by the registered public accounting firm that prepared or issued its audit report. o

If securities are registered pursuant to Section 12(b) of the Act, indicate by check mark whether the financial statements of the registrant included in the filing reflect the correction of an error to previously issued financial statements.  o 

Indicate by check mark whether any of those error corrections are restatements that required a recovery analysis of incentive-based compensation received by any of the registrant’s executive officers during the relevant recovery period pursuant to §240.10D-1(b).  o 

Indicate by check mark whether the registrant is a shell company (as defined in Rule 12b-2 of the Act). o Yes x No

As of June 30, 2023, the last business day of the registrant’s most recently completed second fiscal quarter, the aggregate market value of common stock held by non-affiliates of the registrant was $356.7 million (based on the closing price of $21.96 as reported on the New York Stock Exchange as of that date).

As of February 9, 2024, 83,309,210 shares of the registrant’s common stock, par value $0.0001 per share, were outstanding.

Documents Incorporated by Reference

Part III of this Annual Report on Form 10-K incorporates information from certain portions of the registrant’s definitive proxy statement relating to the registrant’s 2024 annual meeting of shareholders, which will be filed with the Securities and Exchange Commission on Schedule 14A within 120 days after the fiscal year to which this report relates.

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ATMUS FILTRATION TECHNOLOGIES INC.

ANNUAL REPORT ON FORM 10-K

TABLE OF CONTENTS

		Page
PART I
Item 1.	Business	4
Item 1A.	Risk Factors	17
Item 1B.	Unresolved Staff Comments	41
Item 1C.	Cybersecurity	42
Item 2.	Properties	43
Item 3.	Legal Proceedings	44
Item 4.	Mine Safety Disclosures	44
PART II
Item 5.	Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities	45
Item 6.	Reserved	45
Item 7.	Management’s Discussion and Analysis of Financial Condition and Results of Operations	45
Item 7A.	Quantitative and Qualitative Disclosures About Market Risk	58
Item 8.	Financial Statements and Supplementary Data	59
Item 9.	Changes in and Disagreements With Accountants on Accounting and Financial Disclosure	91
Item 9A.	Controls and Procedures	91
Item 9B.	Other Information	91
Item 9C.	Disclosure Regarding Foreign Jurisdictions that Prevent Inspections	92
PART III
Item 10.	Directors, Executive Officers and Corporate Governance	93
Item 11.	Executive Compensation	93
Item 12.	Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters	93
Item 13.	Certain Relationships and Related Transactions and Director Independence	93
Item 14.	Principal Accounting Fees and Services	93
PART IV
Item 15.	Exhibits and Financial Statement Schedules	94
Item 16.	Form 10-K Summary	96
	Signatures	99

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PART I

Item 1. Business

Overview

Atmus 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 enable lower emissions and provide superior asset protection. Atmus estimates that approximately 19% of Atmus’ net sales in 2023 were generated through first-fit sales to original equipment manufacturers (“OEM”s), where Atmus’ products are installed as components for new vehicles and equipment, and approximately 81% were generated in the aftermarket, where Atmus’ products are installed as replacement or repair parts, leading to a strong recurring revenue base. Building on Atmus’ 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.

For the year ended December 31, 2023, Atmus generated $1,628.1 million in Net sales, $171.3 million in Net income and $302.3 million in Adjusted EBITDA. See “Management’s Discussion and Analysis of Financial Condition and Results of Operations - Non-GAAP Measures” in this Annual Report on Form 10-K for a description of Adjusted EBITDA and a reconciliation of Adjusted EBITDA to Net income, the most directly comparable financial measure calculated in accordance with U.S. GAAP.

Atmus’ Business Strategy

Grow share in first-fit in core markets

Atmus’ organic first-fit growth opportunities are centered on four pillars:

•Grow market share with leading OEMs: Atmus benefits from deep relationships with leading OEMs. Atmus’ technology innovations, global footprint and preferred brand position it well to grow along with the leading OEMs. As Atmus’ OEM partners continue to grow in share and through consolidation of their respective markets, Atmus will partner with them to grow. This growth with OEMs in turn increases the installed base for its products, which drives recurring aftermarket revenue.

•Support technology transitions with leading OEMs: Atmus plans to further build on its relationship with OEMs as they transition to alternate fuel technologies, such as hydrogen-powered internal combustion engines, battery electric vehicles and fuel cell electric vehicles. Based on currently available technology and Atmus’ assessment of products being developed, Atmus believes that, although battery-electric vehicles may have lower levels of filtration content than internal combustion engine vehicles, other technologies such as hydrogen-powered internal combustion engines or fuel cell electric vehicles may have similar levels of filtration content as internal combustion engine vehicles. Some of Atmus’ current developments in the zero emissions space include hydrogen water separators, air filtration products,

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coolants and deionizing water filters. Atmus currently has a number of alternative fuel development programs underway with its existing customer base in the zero emissions space. Atmus is well positioned for the broader transition of technology through its existing relationships with customers.

•Enhanced product content per vehicle: Atmus has a focus on offering system modules and highly integrated solutions as customers and end-users seek improved filtration performance and quality, which it believes will result in increased first-fit content per vehicle. Atmus is also extending into smart filtration solutions, including embedded sensors, prediction algorithms and data analytics tools.

•Accelerate new product development: Atmus is accelerating its new product development cycle by continued investment in advanced system level testing capabilities, leveraging in-house 3D printing capabilities, utilizing powerful simulation tools and applying machine learning tools throughout its product development cycle.

Accelerate profitable growth in the aftermarket

Atmus estimates that aftermarket net sales represented approximately 81% of its total net sales in 2023, and has significant opportunity for further growth through these strategic initiatives:

•Expand Atmus’ product portfolio: Offering a comprehensive product portfolio provides a ‘one-stop shop’ for Atmus’ customers. Atmus offers a wide range of products to ensure product coverage and continues to release new products on a yearly basis. Atmus has launched approximately 300 new products annually, on average, over the last three years. Atmus has a team dedicated to tracking new filter releases and strategically selecting the type and quantity of products to launch each year to ensure optimal product coverage. Recent product launch focus has trended towards more targeted and focused product releases.

•Use analytics to target and capture growth opportunities: Atmus will continue to develop and enhance analytic tools, including using machine learning and artificial intelligence, to identify cross-sell or up-sell opportunities, and new or underserved customers, and precisely estimate the opportunity for additional sales of its Fleetguard-branded products. Atmus works directly with end-users or through its channel partners to define, track and measure opportunities and conversion rates.

•Expand reach through multi-channel distribution: It is important that Atmus can reach end-users no matter where they are, or how they choose to purchase Atmus products. Atmus continues to expand its presence with OEM dealers, independent distributors, service centers and retail outlets.

•Invest in product technology advantage to enhance value and protect revenue: Where Atmus is the first-fit, it increases customer retention on aftermarket opportunities by using advanced technologies and proprietary product designs that drive improved performance and create preference for its products. Where Atmus is not the first-fit, it continues to develop products that meet or exceed the first-fit product, supporting its brand position as premium quality and performance, and leading to high customer loyalty.

Transform Atmus’ supply chain

Atmus is focused on transforming its supply chain to improve customer experience, which is expected to drive growth and reduce overall cost, leading to margin enhancement. Atmus’ strategic initiatives have four pillars:

•Drive services and availability: Synchronize global planning across the network to focus on on-shelf availability.

•Optimize network: Invest in its physical footprint to provide superior availability while minimizing material and part movement.

•Transform cost structure: Optimize supplier management and spend and increase throughput across Atmus’ network of plants and increase automation.

•Invest in capabilities for the future: Deploy robust processes across the organization from forecasting through customer orders to fulfillment, and invest in critical global systems infrastructure to provide best-in-class functionality.

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Expand Atmus’ technology and diversify its distribution channels beyond its core markets

Atmus is focused on building sustainable growth by expanding and diversifying into the industrial filtration market, which includes machinery and equipment, oil and gas, pharmaceuticals, food and beverage and metals and mining. Atmus believes it can leverage its global footprint and existing technical capabilities, including its proprietary filtration media technology, into these markets to open new opportunities for growth. Atmus anticipates achieving this by expanding its focus to include non-engine products that it can sell to its current and new customers within its existing markets by utilizing its global footprint. Atmus is working on developing capabilities, whether organically or through acquisitions or strategic partnerships, to enter new markets with long-term growth prospects which will further diversify its revenue base. To the extent that Atmus considers acquisitions, it will apply a disciplined financial framework in assessing these opportunities.

Atmus’ Global Footprint

Atmus serves end-users globally, with approximately 49% of its Net sales in 2023 from outside of the United States and Canada. Atmus believes that it, together with its joint ventures in China and India, has a leading position in its core markets, based on Net sales in 2023. Atmus maintains strong global customer relationships, supported by an established salesforce with work locations in 25 countries as of December 31, 2023. Also, as of December 31, 2023, Atmus operates through 11 distribution centers, 10 manufacturing facilities and five technical facilities plus 10 manufacturing facilities and two technical facilities operated by its joint ventures, giving Atmus presence on six continents.

Atmus’ Premium Products

Atmus offers a full spectrum of filtration solutions that enable lower emissions and provide superior asset protection. Atmus’ filtration products provide comprehensive and differentiated solutions, which allow its end-users to extend service intervals, reduce maintenance costs and increase uptime. Atmus’ products include fuel filters, lube filters, air filters, crankcase ventilation, hydraulic filters and coolants and other chemicals. Atmus’ broad range of products in each of its core markets enables one-stop shopping, which Atmus believes is a key competitive advantage.

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Atmus’ Markets

Atmus believes the filtration product market is large and attractive, with estimated total product sales of approximately $80 billion in 2022, of which Atmus believes the total engine products market — consisting of its core markets and the passenger car market — was approximately $32 billion. Within the total engine products market, Atmus estimates that its core markets had a total addressable market of approximately $14 billion in 2022, having grown by approximately 4% compounded annual growth rate (“CAGR”) over the last five-year period ending in 2022. Atmus estimates that the passenger car market, which it does not currently and does not expect in the future to focus on, had a total addressable market of approximately $18 billion in 2022. The balance of the filtration product market is made up of industrial filtration markets, which Atmus estimates had a total addressable market of approximately $48 billion in 2022. Atmus’ strategy includes a focus on expanding into industrial filtration markets in the future; these markets have grown by approximately 7% CAGR over the five-year period ending 2022. We believe that inflation was a significant contributor to market growth during the

five-year period ending 2022. Looking ahead, excluding inflationary impact, Atmus expects the industrial filtration markets to grow by approximately 4.5% CAGR and its core markets by approximately 2% CAGR, in each case through the five-year period ending in 2027.

The engine filtration market is impacted by the following key drivers and trends:

•Growth in freight volumes (on-highway) and industrial activity (off-highway): Atmus believes broader economic growth is a strong indicator for its business. The U.S. Bureau of Transportation Statistics’ Freight Analysis Framework forecasted (as of November 2023) that between 2023 and 2050 U.S. freight volume will increase by approximately 50%, and expected that trucks will remain the predominant freight carrier in the near future. Off-highway activity is correlated with the overall construction industry. Dodge Construction Network predicted (as of November 2023) that the overall U.S. construction industry will rise 7% in 2024 after growth slowed to just 1% in 2023. It is expected that the first half of 2024 will see slower growth compared to the second half of the year. The Construction Industry Databook expects (as of October 2023) U.S. construction output to grow at 5.3% CAGR from 2023 to 2027.

•Growth in emerging markets: Global growth in core markets is being driven by macro-economic expansion, including the build-out of infrastructure. Asian markets, including India, are currently positioned for high growth. According to the International Monetary Fund (IMF), from 2018 to 2023, gross domestic product in India has grown at a compounded annual growth rate of 4.0%. The growth in India is primarily driven by the increasing demand for transportation as well as emission regulations. The growth in China was depressed in 2022 due to the COVID-19 response and remained constrained in 2023 due to declining economic conditions. China had experienced high growth in the prior years and Atmus expects a partial recovery over the next few years. Gross domestic product in China has grown at a compounded annual growth rate of 4.9% from 2018 to 2023 according to the IMF.

•More stringent emissions standards: Atmus’ core markets will need to comply with more stringent regulatory standards on emissions driving the requirement for higher quality, increased content and higher priced filtration systems.

•Technology transition: There is broad based recognition that GHG emissions are driving climate change. Increasingly, Atmus’ customers, governments, and investors are making commitments to reduce their GHG emissions, including pledges to achieve net zero GHG emissions by 2050. While the pace of adoption will vary by region, Atmus’ core markets may be impacted by technology transitions, including transition to battery-electric vehicles, fuel cell electric vehicles and alternate power sources.

Atmus’ Competitive Strengths

Technology leadership and deep industry knowledge enable Atmus to deliver better customer solutions

Atmus combines a culture of innovation with deep-seated experience in its industry to deliver superior filtration solutions for its customers. Atmus’ technical team develops a range of filtration technologies, including filtration media, filter element formation, filtration systems integration and service-related solutions such as remote digital diagnostic and prognostic platforms and analytics. Atmus’ technical team of approximately 350 engineers, scientists and technical specialists are located in five technical centers around the world, with approximately 25% holding advanced technical degrees. Atmus’ team draws on a 65-year history focused on

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filtration and media technologies. Atmus has a broad IP portfolio with over 1,275 worldwide active or pending patents and patent applications and over 600 worldwide trademark registrations and applications as of December 31, 2023.

Atmus has leveraged this expertise not only to develop its cutting-edge filters, filter systems and filtration media but also to manufacture a large portion of its proprietary filtration media. This allows Atmus to move swiftly from development to application of filtration technologies that protect and enhance the operation of its customer’s equipment and machines. StrataPore, NanoNet, NanoForce, and most recently, NanoNet Plus product families have enabled engines and equipment to meet continually changing emissions and performance requirements.

Atmus’ technical team works closely with Atmus’ customers to develop and apply filtration technologies that help them improve their operations. For example, Atmus helped a key customer and partner in China to be one of the first to extend maintenance intervals on both lube and fuel filtration systems from 20,000 kilometers to 100,000 kilometers. Additionally, Atmus’ NanoNet Plus fuel filtration and fluid control systems have delivered fuel system component protection meeting stringent European and North American requirements while still providing enhanced service intervals, and Atmus’ eRCV product families continue to offer crankcase emissions performance control across European, North American, and China-based customers. Atmus’ technology allows it to deliver performance-enabling and customized filtration solutions for its end-users, which creates long-lasting partnerships with its customers.

Iconic Fleetguard brand with premium products

Atmus believes that Fleetguard is a premium, leading brand that is strongly associated with reliability and strong performance. Atmus offers a full suite of Fleetguard-branded filtration products. With its broad line of high-quality filtration products, Atmus’ Fleetguard brand provides filters for nearly all makes of vehicles and equipment in its core markets, which further enhances Atmus’ availability, visibility and brand recognition. Atmus’ Fleetguard brand is further supported by a competitive warranty that gives Atmus’ customers and end-users high confidence in the performance and durability of its products.

Partnering with leading OEMs

Atmus has a strong history as a supplier to leading OEMs, including Cummins, Daimler, Deere, Doosan, Foton, Komatsu, Paccar/DAF, the Traton Group (Navistar/Scania/MAN), Stellantis and Volvo. Atmus sells both first-fit and aftermarket products to these customers and has been selling to each of them for at least 10 years. These customers in the aggregate accounted for approximately 67% of Atmus’ net sales in 2023 and have consistently accounted for more than 67% of Atmus’ net sales in each of the last five years. Atmus has written agreements with most of its key customers that specify certain purchase parameters, but do not obligate them to specific volumes. Atmus invests in its relationships and utilizes its technical strengths to win first-fit business with these OEMs, which drives Atmus’ installed base, yielding strong recurring revenue streams in the aftermarket. The OEMs also provide Atmus with early insight into technological developments and evolving product requirements within the broader engine and industrial application industry, allowing Atmus to be well positioned as the world shifts towards more complex modular filtration systems and filtration for other power sources.

Cummins is Atmus’ largest customer and accounted for approximately 17.4% of Atmus’ net sales in 2023. This relationship is defined by the first-fit supply agreement and the aftermarket supply agreement. These supply agreements will help give Atmus visibility and stability to its future sales within the terms of the agreements. In addition, for 65 years prior to the Separation, Atmus’ sales and technical teams have been embedded with Cummins, allowing Atmus to have a deep understanding of their needs, which enables Atmus to deliver high-quality, high-performance products that deliver value to Cummins. Atmus partners with Cummins in all regions to win end-user accounts in the aftermarket and create a preference for the Fleetguard brand.

Multi-channel path to diverse global markets

Atmus’ global presence provides a diverse and stable customer base across truck, bus, agriculture, construction, mining and power generation vehicles and equipment markets. Atmus’ current core markets are on-highway and off-highway, representing approximately 60% and 40% of Atmus’ net sales in 2023, respectively.

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Atmus estimates that approximately 81% of Atmus’ net sales in 2023 were generated in the aftermarket.

To drive these net sales, Atmus has developed a multi-channel path to global markets that ensures broad product availability and provides end-users with choice and flexibility in purchasing. Atmus distributes its products through a broad range of OEM dealers, independent distributors, and retail outlets, including truck stops.

The dealers of the OEMs are typically the channel preferred by customers in many markets. Atmus’ close relationships with the OEMs and strong first-fit installed base position Atmus well with the OEM dealer network and large fleet customers. For example, the dealers of four of the largest North America on-highway OEMs carry a significant range of Atmus’ products at their dealerships.

In addition, Cummins distributors, independent distributors and retailers enable Atmus to reach a broader end-user market and create additional points of sale or service. Atmus also works directly with major customers of its channel partners (such as large fleets or mining companies), across its end markets, to create strong brand preference, which, in turn, leads to strong demand for its products and generates recurring revenue. Atmus continues to increase geographic coverage within regions to better serve its customers by investing in distribution expansion.

Atmus typically ships directly from its 11 distribution centers (as of December 31, 2023) worldwide to its channel partners, which provides direct connection and detailed understanding of Atmus’ customer and end-user base. Atmus’ comprehensive distribution and market coverage are vital to maintaining its broad reach, global presence and brand recognition.

Comprehensive aftermarket coverage and large installed base

Atmus has a large installed base driven by first-fit relationships with leading OEMs, leading to long product life cycles and a strong stable revenue base. In the last few years Atmus’ business strategy has put increased focus on releasing first-fit OEM parts, which Atmus believes will increase aftermarket retention. Atmus’ large installed base protects against cyclicality in truck sales and creates a long tail of revenue due to the long lifespans of commercial vehicles and equipment, together with the extensive aftermarket service they require throughout their useful lives. For example, the LF670 filter was first installed on trucks in the 1970s and continues to generate an aftermarket revenue stream approximately 50 years post launch. Aftermarket product sales tend to have a higher profit margin, relative to first-fit systems, driving higher operational cash flow and stability throughout the business cycle.

Atmus’ end-user relationships provide critical market intelligence that help drive up-sell and cross-sell opportunities, while providing Atmus direct visibility to market opportunities. Additionally, these end-user relationships enable Atmus to accelerate the launch of a broad range of products where it is not the first-fit.

Scalable global manufacturing operations

Atmus maintains a global manufacturing footprint with highly capable manufacturing facilities in six continents. As of December 31, 2023, Atmus had 10 manufacturing sites for Atmus, and 10 for its joint ventures, allowing it to maintain proximity with its customers and global scale. All of Atmus’ manufacturing facilities that are currently in production have obtained either ISO 9001 or ISO/TS 16949 quality management certifications. Additionally, Atmus’ global warehousing footprint enhances this proximity with 11 distribution centers (as of December 31, 2023) strategically located around the world.

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Atmus’ significant volumes allow Atmus to take advantage of economies of scale. Atmus has invested strategically in automation and optimization of core filtration manufacturing processes to deliver cost efficiencies.

Attractive margins and strong operating cash flow generation

Atmus’ business benefits from attractive margins and a track record of strong cash flow generation. Atmus’ high percentage of recurring revenue, relative to other industrial businesses, helps mitigate market cyclicality and revenue volatility. Atmus realized a net income margin of 10.5% and an Adjusted EBITDA margin of 18.6% in 2023. Atmus’ business is resilient, which is evidenced by the fact that, despite the changes in economic conditions due to the COVID-19 pandemic, Atmus’ net sales rebounded with a 16.7% increase in 2021 (as compared to 2020), increased by 8.6% in 2022 (as compared to 2021) and increased by 4.2% in 2023 (as compared to 2022). Atmus generates strong operating cash flow from operations with high cash flow conversion, delivering $564.6 million from 2021 through 2023.

Experienced leadership team with a proven track record of driving growth

Atmus is led by an energized and experienced senior leadership team with extensive industry experience with Cummins and other leading industrial companies. Atmus’ strategic vision and culture are directed by its executive leadership team under the leadership of its Chief Executive Officer, Stephanie J. Disher, its Chief Financial Officer, Jack Kienzler, its Chief People Officer, Renee Swan, its Chief Legal Officer, Toni Y. Hickey and its Vice President, Engine Products, Charles Masters. Stephanie J. Disher joined Cummins in 2013 and has over 20 years of experience in leadership positions, including international assignments in Australia, Asia, and the United States. Most recently, Stephanie J. Disher served as Vice President of Cummins Filtration where she has demonstrated a continued track record of strong business performance, innovation and operational excellence. Jack Kienzler joined Cummins in 2014 and has over 14 years of finance experience. He most recently served as the Executive Director of Investor Relations at Cummins, having formerly led the Corporate Development team. Renee Swan joined Atmus in August 2023 and has over 20 years of experience in human resources and talent management. Toni Y. Hickey joined Cummins in 2012 and has over 24 years of experience as an intellectual property lawyer. Charles Masters joined Cummins in 2003 and has over 20 years of experience in global sales and operational leadership roles within Cummins. Atmus’ leadership team has the ability to develop and execute its strategic vision and aims to create long-term shareholder value. Atmus benefits from its team’s industry knowledge and track record of successful product innovation and financial performance. Additionally, members of Atmus’ senior leadership team have strong experience executing and integrating acquisitions and strategic partnerships to drive accelerated growth and improved profitability.

History

Atmus’ business was founded in 1958, beginning with a single filter production line developed by Cummins Engine Company in Seymour, Indiana to meet the high performance requirements of Cummins diesel engines. As early as 1963, Cummins initiated the Fleetguard brand, which is a well-recognized brand in Atmus’ core markets. In 1987, the India Fleetguard joint venture was established and in 1994 a joint venture in China was formed as Cummins continued to enter emerging markets. In 2006, Atmus’ wholly owned subsidiary China Filtration was established, and in 2010, the Korea media facility was opened. In 2016, an India technology facility was opened and Atmus moved to a new corporate headquarters in Nashville.

Supply

The performance of the end-to-end supply chain, extending through to Atmus’ suppliers, is foundational to its ability to meet customers’ expectations and support long-term growth. Atmus is committed to having a robust strategy for how it selects and manages its suppliers to enable a market focused supply chain. This requires Atmus to continuously evaluate and upgrade its supply base, as necessary, as Atmus strives to ensure it is meeting the needs of its customers.

Atmus uses a combination of proactive and reactive methodologies to enhance its understanding of supply base risks, which guide its development of risk monitoring and sourcing strategies. Atmus’ category sourcing strategy process (a process designed to create the most value for the company) supports the review of its long-term needs and guides decisions on what it makes internally and what it purchases externally. For the items Atmus decides to purchase externally, the strategies also identify the suppliers it should partner with long-term to provide the best technology, the lowest total cost and highest supply chain performance. Key suppliers are

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managed through long-term supply agreements that secure capacity, delivery, quality and ensure cost requirements are met over an extended period.

Other important elements of Atmus’ sourcing strategy include:

•selecting and managing suppliers to comply with its Supplier Code of Conduct; and

•assuring its suppliers comply with its prohibited and restricted materials policy.

Atmus monitors supply chain disruptions and conducts structured supplier risk and resiliency assessments. Atmus increased the frequency of its formal and informal supplier engagement to address potentially impactful supply base constraints and enhanced collaboration to develop specific countermeasures to mitigate risks. Atmus’ global team, located in different regions of the world, uses various approaches to identify and resolve threats to supply continuity.

Supply chain disruptions can impact Atmus’ business as well as its suppliers and customers, resulting in longer lead times in some areas of its business. Orders are typically issued as rolling releases with a specific lead time. When these orders are on backlog, they are often subject to cancellation on reasonable notice without cancellation charges, and therefore are not considered firm. Atmus is working closely with its customers to meet demand and work through backlogs as efficiently as possible.

Materials

The principal materials that Atmus uses directly in manufacturing its products are steel, filter media and petrochemical-based products, including plastic, rubber and adhesives products. In 2023, material costs represented approximately 57% of Atmus’ cost of sales, compared to 61% of Atmus’ cost of sales in 2022.

Customer Concentration

Atmus has thousands of customers around the world and has developed long-standing business relationships with many of them. Cummins is Atmus’ largest customer, accounting for approximately 17% of Atmus’ net sales in 2023 and 19% in 2022 and 2021, respectively. In connection with the Separation, Atmus entered into a first-fit supply agreement and an aftermarket supply agreement with Cummins for Atmus’ first-fit and aftermarket products. These agreements provide for continuation of Atmus’ supply to Cummins for all of its first-fit applications that Atmus currently supports, commitment to first-fit supply for certain upcoming product launches, and continued supply to Cummins of its full line of aftermarket filtration needs. It does not commit a specific volume of filters or related products. The loss of this customer or a significant decline in the production level of Cummins engines that use Atmus’ filters would have an adverse effect on Atmus’ business, financial condition, results of operations or cash flows.

In addition to the agreement Atmus entered into with Cummins, Atmus has long-term agreements with many of its largest customers. Collectively, Atmus’ net sales from its next four top customers, other than Cummins, was approximately 39% of Atmus’ net sales in 2023, 39% in 2022 and 37% in 2021. Excluding Cummins, two other customers, PACCAR and the Traton Group, accounted for more than 10% of Atmus’ net sales in 2023. Atmus’ customer agreements typically contain standard purchase and sale agreement terms covering filter pricing, quality and delivery commitments, as well as engineering product support obligations. The basic nature of Atmus’ agreements with OEM customers is that they are long-term price and operations agreements that provide for the availability of Atmus’ products to each customer through the duration of the respective agreements. Where Atmus has such agreements in place, its customers typically place purchase orders with it pursuant to these agreements. Agreements with most OEMs contain bilateral termination provisions giving either party the right to terminate in the event of a material breach, change of control or insolvency or bankruptcy of the other party.

Intellectual Property

Atmus owns or controls a broad range of intellectual property rights, including a significant number of patents, trademarks, copyrights, trade secrets and other forms of intellectual property rights in the United States and foreign countries. Atmus has a broad IP portfolio with over 1,275 worldwide active or pending patents and patent applications and over 600 worldwide trademark registrations and applications as of December 31, 2023, which were granted and registered over a period of years. Atmus’ leading brand house trademark is Fleetguard.

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Atmus protects its innovations that arise from research and development through patent filings, as well as through trade secrets. Although these patents, trademarks and trade secrets are generally considered beneficial to Atmus’ operations, Atmus does not believe any patent, group of patents, trademark or trade secret is solely responsible for protecting its products.

Research and Development

In 2023, Atmus continued to invest in future critical technologies and products. Atmus will continue to make investments to develop new technologies and improve its current products to meet increasing and changing emissions and engine performance requirements globally for diesel and hydrocarbon-powered equipment. In addition to building on its core technologies, Atmus is making investments in filtration and separation technologies required and used by electric powered vehicles, hydrogen production and other industrial systems.

Atmus’ research and development programs are focused on product improvements, product extensions, innovations and cost reductions for its customers. Research and development expenditures include salaries, contractor fees, building costs, utilities, testing, technical IT, administrative expenses and allocation of corporate costs and are expensed when incurred. Research and development expenses were $42.3 million, $38.5 million, and $41.6 million for the years ended December 31, 2023, 2022 and 2021, respectively.

Seasonality

While individual product lines may experience modest seasonal variation in production, there is no material effect on the demand for the majority of Atmus’ products on a quarterly basis.

Competition

Atmus is a leading global participant in the filtration engine products markets. Atmus’ products include fuel filters, lube filters, air filters, crankcase ventilation, hydraulic filters and coolants and other chemicals. Key global participants in this market include MANN+HUMMEL, Donaldson, Parker and MAHLE. The rest of the market is highly fragmented and occupied by various specialized and regional players. Most of the large global players serve both first-fit and aftermarket channels, while smaller, regional players tend to focus on the aftermarket. The filtration market offers a unique multi-channel path to market, and diversification across first-fit, OEM service and aftermarket. The recurring revenue model and mission-critical role of filters drive consistent demand across regions and end markets.

Principal methods of competition in the filtration markets are product quality and performance, price, geographic and application coverage, availability, customer service, ease of doing business and brand reputation. Atmus believes it is a market leader within many of its product lines, including filters in Atmus’ on-highway and off-highway markets, and that its success in the market is due to its technology, its iconic Fleetguard brand, its global footprint, strong customer relationships and the talent within its organization.

Human Capital Resources

As of December 31, 2023, Atmus employed approximately 4,500 persons worldwide. As of December 31, 2023, approximately 53% of Atmus’ employees worldwide were represented by various unions under collective bargaining agreements. Among these collective bargaining agreements, those for the employees in Mexico, Brazil and France are renewed annually after compensation negotiations, while the collective bargaining agreement for the Cookeville, Tennessee plant typically has a four- to five-year term. The collective bargaining agreement for Brazil is in place and active and the compensation negotiations for a new annual term on the collective bargaining agreements for Mexico and France were recently concluded. These collective bargaining agreements have terms that will expire between December 2024 and February 2025. The collective bargaining agreement for the Cookeville, Tennessee plant is expiring at the end of its four year term on February 29, 2024 and negotiations for its renewal started in January 2024.

Throughout Atmus’ 65-year history, Atmus has always recognized that people are the strength of its business and drive its ability to effectively serve its customers and sustain its competitive position. Atmus believes that the composition of its workforce gives it advantages relating to cost and capability when compared to its peers. The global COVID-19 pandemic redefined the way Atmus has traditionally worked and created both new expectations by employees, as well as new ways to work flexibly and seamlessly on a global basis. Atmus is embracing these opportunities as Atmus simplifies its organizational structures and processes, further

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empowers managers and employees to make decisions and generate positive results, increases employee communication and interaction with senior leadership and enhances a work environment that is inclusive, transparent, agile and team-oriented.

Purpose and Core Values

Atmus is a purpose-driven company. Atmus’ purpose is ‘Creating a better future by protecting what is important.’ Atmus creates and innovates every day. With a forward focus, Atmus never sits still. Atmus realizes the world is bigger than it, and it aspires for a better future for shared humanity. Atmus’ products protect its customers, their equipment and their livelihoods. Atmus protects what’s important to its people, the planet, and its customers.

Atmus’ culture is shaped by its core values:

•Build Trust in every relationship every day.

•Have Courage to speak up, take action and shape the future.

•Be Inclusive by embracing differences and building a community where everyone feels valued.

•Show Caring by engaging with kindness and consideration for the wellbeing of others.

Leadership and Talent Management

The capability of Atmus’ people and their ability to work effectively in agile teams is a primary enabler of Atmus’ success. Atmus strives to create a leadership culture that is authentic, transparent and approachable. By minimizing organizational layers, simplifying its organizational structure and process, Atmus empowers its employees to have an increased impact on its results. Atmus’ leaders are tasked with providing their employees with the support, development and encouragement needed to be successful. Further, Atmus’ leaders connect Atmus’ people and their work to Atmus’ purpose, values, brand promise and strategies. Atmus will continue to invest in leadership development. Atmus will maintain the emphasis that the primary role of leaders at all levels is to focus on people development, supporting the unique needs of each employee in reaching their greatest positive impact at work, in the community and at home.

Atmus’ talent management approach seeks to develop the skills and capabilities of a diverse, global workforce and utilize Atmus’ talent to deliver excellent results. Atmus advances and invests in its people based on strong performance, demonstration of core values in how work is accomplished and the individual motivation to have a larger impact on organization results.

Competitive Pay and Benefits

To attract and retain the best employees, Atmus maintains a positive work environment that is grounded in its core values, a leadership culture that supports the development of its people and competitive pay and benefits.

When designing its base pay compensation ranges, Atmus completes market analyses to maintain pay ranges that are current and related to the work it performs. Atmus also completes annual compensation studies to assess market movement for key skills as well as internal pay equity. Atmus incorporates living wage assessment into its annual compensation reviews to ensure that current and new hires are not below this threshold. Collectively, Atmus’ global wage assessments seek to ensure Atmus is fair, equitable and competitive in its ability to attract and retain the best talent. Everywhere possible, individual performance is the primary path for Atmus’ employees to advance their earning potential. In addition, all employees also participate in annual variable compensation plans that encourage collaboration in the achievement of overall business results.

Atmus’ benefit programs are aligned with Atmus’ values, target market competitiveness and offer flexibility to meet individual needs. Medical benefits include tiered health care costs that are more affordable to junior employees. Also included in Atmus’ offerings are employee assistance programs, vacation time, retirement and savings plans and a variety of paid and unpaid time-off options that seek to address personal needs and important life-events.

Employee Safety and Wellness

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Atmus has a health, safety and environment commitment to protect what is important - its people, the planet and its customers. Every day, Atmus is committed to continually improve the health and safety of its work environment, taking action to achieve its goal that nobody gets hurt.

In pursuit of this goal, Atmus embraces a positive safety culture that encourages its employees to recognize potentially unsafe situations, report concerns and work together to remove potential hazards from the work environment before incidents occur. Additionally, Atmus’ Global Health and Safety Policy sets the standard for Atmus’ facilities based on best practices that often exceed regulatory requirements. Atmus manages its sites using the International Standards for Health, Safety and Environment to create a strong framework for risk reduction and continual improvement, with certification to ISO45001 and ISO14001.

Atmus encourages its leaders to promote safety through strategic planning, enforcement and accountability, fostering the right environment, and influencing employees and other stakeholders. Atmus encourages its employees to promote safety through personal accountability, managing risk, and adopting positive behaviors. By employing these safety guidelines, Atmus seeks to achieve its goal of zero serious injury fatalities caused by machinery safety hazards due to the lack of or failure of safety control measures.

Where Atmus identifies a risk, it ensures that improvement actions are shared across the organization to promote a learning-oriented culture where Atmus’ employees are empowered to make their work environment safer and better. Using leading indicators of performance, Atmus recognizes the contribution of individuals and teams to reinforce safe work behaviors in the workplace, homes and communities.

Diversity and Inclusion

Diversity and inclusion at all levels of Atmus are critical to its ability to innovate, win in the marketplace and create sustainable success. Having diverse and inclusive workplaces allows Atmus to attract and retain the best employees to deliver results for its shareholders. Building on a long history that has emphasized diversity and inclusion, Atmus will continue to seek opportunities and invest in processes that attract, develop and retain diverse talent, globally. Atmus will measure outcomes and ensure that all employees can benefit from being a part of Atmus. This starts by assuring that the leadership of Atmus is diverse. At this time, five out of Atmus’ 11 directors are female and four out of its 11 directors are ethnically diverse. In addition, 44% of Atmus’ executive team is female, including its Chief Executive Officer, and 22% is ethnically diverse.

Environmental Sustainability

Atmus is committed to ‘Creating a better future by protecting what is important.’ Atmus believes environmental sustainability is central to what it does and it is dedicated to serving as an environmental steward to proactively enable a cleaner and more sustainable world for its employees, its customers and its communities.

Sustainability is a continuous journey. As part of its journey, Atmus has embedded environmental initiatives across Atmus through its policies and procedures. Atmus establishes annual goals that focus on protecting employees while continuously reducing environmental impacts through pollution prevention, energy efficiency improvements and conservation, and water minimization.

From Atmus’ product portfolio choices to its production development processes, Atmus’ focus is on enabling a cleaner and more sustainable world. For Atmus’ customers and end-users, Atmus continues to deliver technology solutions that enable the adoption of cleaner and more efficient energy sources in their operations. Further, Atmus’ approach to product design enables customers and end-users to extend service intervals thereby reducing resource consumption and GHG emissions. In Atmus’ product development processes, Atmus’ intent is to select design and production strategies that enable energy conservation. This includes initiatives to reduce raw material and energy consumption, such as the selection of recycled materials in Atmus’ media and the use of specialized media in some of Atmus’ products to eliminate the need for curing ovens.

Atmus’ operations and facility management programs consistently look for opportunities to reduce Atmus’ impact. Atmus also voluntarily executes global environmental sustainability initiatives, including:

•Implementing green energy alternatives, including installing solar panels at its San Luis Potosi, Mexico plant and other manufacturing sites.

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•Monitoring water consumption at its sites, setting reduction goals, and implementing water sustainability alternatives, including a rainwater harvest program for its desert garden at its San Luis Potosi plant to reduce water use.

•Implementing energy efficiency improvements at its facilities, including boilers in its Cookeville, TN plant, energy efficient air handling upgrades to its plant in Neillsville, WI and the installation of high efficiency LED lighting throughout Atmus’ site in Kilsyth, Australia.

During 2023, Atmus formally engaged its stakeholders, with the assistance of a third-party sustainability consultant, and completed a double materiality assessment. This assessment is a rigorous, industry-aligned process designed to evaluate and prioritize Environmental, Social and Governance topics based on stakeholders’ own goals and objectives both in terms of its implications for the company's financial value, as well as the company's impact on the world at large. Atmus is reviewing and considering these results as Atmus further refines its sustainability goals and targets.

Joint Ventures

Atmus has entered into three joint ventures with business partners, two in India, and one in China. Atmus’ joint ventures operate either manufacturing facilities or manufacturing and technology centers.

Atmus’ manufacturing joint ventures are primarily intended to allow Atmus to increase its market penetration in geographic regions, reduce capital spending, streamline its supply chain management and develop technologies. Atmus’ largest manufacturing joint ventures are based in China and India, and are included in the list below. The results and investments in Atmus’ joint ventures in which Atmus has 50% or less ownership interest that are discussed below are not consolidated in its financial results and are instead included in “Equity, royalty and interest income from investees” and “Investments and advances related to equity method investees” in its Consolidated Statements of Net Income and Consolidated Balance Sheets, respectively.

•Fleetguard Filters Private Ltd. (FFPL) is a joint venture with its partner, Perfect Sealing Systems Private Ltd., that manufactures and sells industrial filters and coolant for commercial vehicles and generators and operates seven manufacturing facilities throughout India. Atmus directly held 49.491% of the economic interest and 50% of the voting interest during the three-year period ended December 31, 2023.

We previously disclosed that the transactions to implement our initial public offering, the separation and the splitoff would constitute a change in control under the governing documents of FFPL, resulting in the loss of rights to board representation which would effectively result in the loss of the ability to prevent certain significant actions and could result in a reduction or elimination of dividends. Subsequent to the initial public offering, based on mutual commercial agreement between the parties, FFPL and the joint venture partners have amended the FPPL Articles of Association to, among other matters, eliminate the change in control provision and revise certain economic provisions.

•Filtrum Fibretechnologies Pvt. Ltd. (Filtrum) is a joint venture with its joint venture partner, FFPL, and four other individuals (who collectively hold an approximate 25% interest), that manufactures filter media for automotive and industrial applications, and is located in Pune, India. Atmus held a 49.75% economic interest (25% directly and 24.75% indirectly through its proportionate ownership of FFPL’s 50% ownership interest) during the three-year period ended December 31, 2023.

•Shanghai Fleetguard Filter Co, Ltd. (SFG) is a joint venture with its partner, Dongfeng Electronic Technology Co. Ltd., that manufactures and distributes various filter and filter spare parts and operates three manufacturing facilities throughout China. Atmus held a 50% indirect ownership share during the three-year period ended December 31, 2023.

Atmus’ joint venture facilities are as follows:

Manufacturing

China: Wuhan (206,000 square feet), owned

China: Shiyan (47,000 square feet), owned

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India: Dharwad (157,000 square feet), owned

India: Hosur (90,000 square feet), owned

India: Jamshedpur (26,500 square feet), owned, (21,000 square feet), leased

India: Sitarganj (87,500 square feet), owned

India: Loni (173,000 square feet), leased

India: Wadki (63,000 square feet), leased

Manufacturing and technology

China: Shanghai (148,000 square feet), leased

India: Nandur (97,000 square feet), owned, (33,000 square feet), leased

Financial information about Atmus’ investments in joint ventures and alliances is incorporated by reference from Note 5, Investments in Equity Investees, to Atmus’ historical consolidated financial statements.

Atmus will continue to evaluate joint venture and partnership opportunities in order to penetrate new markets, develop new products and generate manufacturing and operational efficiencies.

Regulatory Matters

Atmus faces extensive government regulation both within and outside the United States relating to the development, manufacture, marketing, sale and distribution of its products, including regulations relating to data privacy, trade compliance, anti-corruption and anti-bribery. These are not the only regulations with which Atmus must comply. For a description of risks related to the regulations that Atmus is subject to, please refer to the section entitled “Risks Related to Government Regulation.”

Legal Proceedings

Atmus is, from time to time, subject to a variety of litigation and other legal and regulatory proceedings and claims incidental to Atmus. Please refer to Note 14, Commitments and Contingencies, to the consolidated financial statements appearing elsewhere in this Annual Report on Form 10-K for more information.

Available Information

The Company makes its annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, proxy statements and other information, including amendments to those reports, available free of charge through its website at investors.atmus.com, as soon as reasonably practicable after it electronically files such material with, or furnishes such material to, the Securities and Exchange Commission (SEC). These filings are available on the SEC’s website at www.sec.gov.

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MANAGEMENT OF ATMUS

Executive Officers

The following table sets forth information, as of February 14, 2024, regarding the individuals who serve as Atmus’ executive officers, followed by a biography of each executive officer.

Name	Age	Position
Stephanie J. Disher	48	Chief Executive Officer
Jack Kienzler	38	Chief Financial Officer
Renee Swan	43	Chief People Officer
Charles Masters	51	Vice President, Engine Products
Toni Y. Hickey	50	Chief Legal Officer and Corporate Secretary

Stephanie J. Disher currently serves as Atmus’ Chief Executive Officer. Ms. Disher previously served as Vice President of Cummins Filtration Inc. Prior to that role, Ms. Disher served in various leadership roles since joining Cummins in 2013, including as Operations Director and Managing Director for Cummins in the South Pacific region. Ms. Disher holds a bachelor’s degree in Commerce from the University of Western Sydney and a Master of Business Administration from the University of Melbourne.

Jack Kienzler currently serves as Atmus’ Chief Financial Officer. Mr. Kienzler previously oversaw the financial activities of Cummins Filtration Inc. as its Chief Financial Officer. Mr. Kienzler served in various leadership roles since joining Cummins in 2014. Mr. Kienzler holds a Bachelor of Science in Finance and Accounting from Indiana University and a Master of Business Administration from the Indiana University Kelley School of Business.

Renee Swan currently serves as Atmus’ Chief People Officer. Ms. Swan previously served as Vice President of Human Resources for the communication systems segment of L3Harris Technologies, Inc. Ms. Swan has over two decades of experience in human resources disciplines, having spent time with Kennametal, Honeywell International, and Eaton Corporation in progressive human resources responsibilities. Ms. Swan has a Master of Professional Studies in Human Resource Management from Cornell University, a Master of Business Administration degree from Point Park University and a Bachelor's in Communications from the University of Pittsburgh.

Charles Masters currently serves as Atmus’ Vice President, Engine Products and previously served as Executive Director of Global Sales and Marketing of Cummins Filtration Inc. Prior to that role, Mr. Masters served in various leadership roles since joining Cummins in 2003, including as General Manager of Eaton Cummins Automated Transmission Technologies from 2018 to 2021 and as President of Cummins Western Canada from 2016 to 2018. Mr. Masters holds a Bachelor of Commerce from the University of Alberta and a Master of Business Administration from Harvard Business School.

Toni Y. Hickey currently serves as Atmus’ Chief Legal Officer and Corporate Secretary. Ms. Hickey previously served as General Counsel of Cummins Filtration Inc., after serving as Deputy General Counsel and Chief Intellectual Property Counsel for Cummins from May 2015 to August 2021. Ms. Hickey has a Bachelor of Science in Finance and Accounting from the University of Colorado — Boulder, and a Juris Doctorate from Southern Methodist University School of Law.

Item 1A. Risk Factors

These risk factors could materially affect our business, financial condition, results of operations and cash flows. These risk factors are not exhaustive and investors are encouraged to perform their own investigation with respect to the business, financial condition and prospects of our business. You should carefully consider the following risk factors in addition to the other information included in this Annual Report on Form 10-K for the fiscal-year ended December 31, 2023, and should also carefully consider the matters addressed in the section herein entitled “Cautionary Statements and Risk Factor Summary.” We may face additional risks and uncertainties that are not presently known to us, or that we currently deem immaterial, which may also impair our business, financial condition, results of operation or cash flows. The following discussion should be read in conjunction with the “Management’s Discussion and Analysis of Financial Condition and Results of Operations,” and our financial statements and notes to the financial statements included herein.

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Summary of Risk Factors

The following summarizes the risks facing our business, all of which are more fully described below. This summary should be read in conjunction with the risk factors below and should not be relied upon as an exhaustive summary of the material risks facing our business. The order of presentation is not necessarily indicative of the level of risk that each factor poses to us.

Risks Related to Our Business Operations

•Significant customer concentration among Cummins, PACCAR, and the Traton Group.

•The loss of a top OEM relationship, or changes in the preferences of Atmus' aftermarket end-users.

•Deriving significant earnings from investees that Atmus does not directly control.

•Significant competition in the markets Atmus serves.

•Evolving customer needs and developing technologies.

•Reliance on Atmus’ executive leadership and other key personnel.

•Strategic transactions, such as acquisitions, divestitures, and joint ventures.

•Management of productivity improvements.

•Work stoppages and other labor matters.

•Variability in material and commodity costs.

•Raw material, transportation and labor price increases and supply shortages.

•Complexity of supply chain and manufacturing.

•Atmus’ customers operating in cyclical industries and the current economic conditions in these industries.

•Exposure to potential claims related to warranties and claims for support outside of standard warranty obligations.

•Products being subject to recall for performance or safety-related issues.

•Inability or failure to adequately protect and enforce Atmus’ intellectual property rights and the cost of protecting or enforcing Atmus' intellectual property rights.

•Ineffective internal control over financial reporting.

•Unexpected events, including natural disasters.

Risks Related to Legal and Regulatory Issues

•Sales of counterfeit versions of products, as well as unauthorized sales of products.

•Statutory and regulatory requirements that can significantly increase costs.

•Changes in international, national and regional trade laws, regulations and policies affecting international trade.

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•Unanticipated changes in Atmus' effective tax rate, the adoption of new tax legislation or exposure to additional income tax liabilities, as well as audits by tax authorities resulting in additional tax payments for prior periods.

•Changes in tax law relating to multinational corporations.

•Significant compliance costs and reputational and legal risks imposed by Atmus' global operations and the laws and regulations to which these are subject.

•Effects of climate change may cause Atmus to incur increased costs.

•Operations being subject to increasingly stringent environmental laws and regulations as well as to laws requiring cleanup of contaminated property.

Risks Related to Cybersecurity and Information Technology Infrastructure

•Potential system or data security breaches or other disruptions.

•Dependence on information technology infrastructure and assets that are increasing in complexity.

Risks Related to Finance and Financial Market Conditions

•Foreign currency exchange rate.

•Potential economic downturns that could cause the balances of recorded goodwill to decrease.

Risks Related to Macroeconomic and Geopolitical Conditions

•Political, economic, and social uncertainty in geographies where Atmus has significant operations or large offerings of products.

•Uncertain worldwide and regional market and economic conditions.

Risks Related to Atmus’ Relationship with Cummins

•The loss of Cummins’ reputation, economies of scale, capital base and other resources as a result of the Separation from Cummins.

•Potential failure of performance by Atmus or Cummins under transaction agreements executed as part of the Separation.

•Actual or potential conflicts of interests for certain of Atmus' executive officers and directors because of their equity interests in Cummins.

•Limited liability to Atmus from Cummins and its directors for breach of fiduciary duty.

•Potential indemnification liabilities to Cummins pursuant to the Separation Agreement.

Risks Related to Atmus’ Capital Structure

•Changes in capital and credit markets.

•Substantial indebtedness consisting of Atmus’ term loan and revolving credit facility, which may impact Atmus' ability to service all its indebtedness and react to changes in the industry.

Risks Related to Ownership of Atmus Common Stock

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•Substantially all Atmus' assets being pledged as security for its term loan and revolving credit facility.

•Fluctuations in the price of Atmus Common Stock; and

•Applicable laws and regulations, provisions of Atmus' amended and restated certificate of incorporation and Atmus' bylaws and certain contractual rights granted to Cummins that may discourage takeover attempts and business combinations that stockholders might consider in their best interests.

Risks Related to Our Business Operations

We have significant customer concentration, with Cummins, PACCAR and the Traton Group respectively accounting for approximately 17.4%, 15.6% and 11.8% of our net sales for the year ended December 31, 2023. The loss of such net sales to any of such significant customers would have a material and adverse effect on our business, financial condition, results of operations and cash flows.

Cummins is our largest customer. For the year ended December 31, 2023, net sales to Cummins accounted for approximately 17.4% of our net sales. Sales to Cummins joint ventures and to distributors with which Cummins has a relationship also account for a portion of our net sales. A portion of our net sales is dependent upon customer acceptance of, and demand for, Cummins’ engines or generators that use our filters. This customer concentration increases the risk of fluctuations in our operating results and our sensitivity to any material adverse developments experienced by Cummins. While our relationship with Cummins is defined by our first-fit supply agreement and aftermarket supply agreement, we may fail in the future to renew these contracts, and, moreover, even if renewed, Cummins’ purchasing power may give it the ability to make greater demands on us with regard to pricing and contractual terms in general. In addition, Cummins may procure supplemental supply of top volume aftermarket products from alternative suppliers for a limited time if we fail to meet certain delivery performance requirements or if we do not offer a product or similar product for sale.

Cummins historically did not seek competitive bids for filtration products. However, prior to the completion of the IPO, Cummins initiated a competitive process to source a selective group of future first-fit programs and associated aftermarket products from its filtration product suppliers, including us. Subsequently, we were successful in being awarded this business. In the future, we expect that Cummins will continue to seek competitive bids for new filtration products and, while we will have a preferred supplier relationship with Cummins, we will have to successfully win bids through Cummins’ bidding process in order to maintain or grow our current level of sales to Cummins and cannot guarantee that Cummins will always select our products. The loss of, or any substantial reduction in sales to, Cummins would have a material adverse effect on our business, financial condition, results of operations and cash flows.

For the year ended December 31, 2023, net sales to PACCAR and the Traton Group accounted for approximately 15.6% and 11.8%, respectively, of our net sales. We cannot guarantee that PACCAR or the Traton Group will always choose to purchase our products. The loss or substantial reduction of sales to PACCAR or the Traton Group could materially and adversely affect our business, financial condition, results of operations or cash flows.

In addition, our association with Cummins has contributed to the relationships we have with certain significant customers due to the relationship those customers had with Cummins. We may not be able to attract new customers of Cummins, or retain existing customers, without Cummins’ support.

The loss of a top OEM relationship, or changes in the preferences of our aftermarket end-users, could adversely impact the recurring nature of our aftermarket sales.

We supply filtration products to many of the largest OEMs for both first-fit and aftermarket, which results in recurring revenue for our products. Our relationships with these OEMs also allow us to be closely attuned to our customers' requirements and preferences and react quickly to any changes. The use of our filtration products as a standard first-fit component creates a steady demand for that product in the aftermarket, as end-users often return to the OEM for aftermarket service for multiple years and may continue to prefer our products as replacement or repair parts.

We may not be able to maintain our current top OEM relationships in the future or may not become the preferred supplier for additional OEMs. In addition, our channel partners’ and end-users’ preferences for

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replacement or repair filtration products may change in the future. The loss of a top OEM relationship, or changes in the preferences of our aftermarket end-users, could adversely impact the recurring nature of our aftermarket sales.

We derive significant earnings from investees that we do not directly control.

We earn equity, royalty and interest income from our joint venture in China — Shanghai Fleetguard Filter Co. Ltd., where we indirectly hold 50% of the economic interest. We also earn equity, royalty and interest income from our joint ventures in India — Fleetguard Filter Private Ltd. (“FFPL”), where we directly hold 49.491% of the economic interest (and 50% of the voting interest), and Filtrum Fibretechnologies Pvt. Ltd., where we hold, directly or indirectly, 49.75% of the economic interests (25% directly and 24.75% indirectly through our proportionate ownership of FFPL’s 50% ownership interest). For the year ended December 31, 2023, we recognized $33.6 million of equity, royalty and interest income from investees, compared to $28.0 million for the year ended December 31, 2022 and $32.4 million for the year ended December 31, 2021. Of these amounts, $21.5 million, $17.1 million and $16.4 million, respectively, were from our joint venture in India — FFPL. Although a significant percentage of our net income is derived from these unconsolidated entities (which were approximately 19.6% for the year ended December 31, 2023, approximately 16.4% for the year ended December 31, 2022 and 19.0% for the year ended December 31, 2021, of which approximately 12.6%, approximately 10.0% and approximately 9.6% were from FFPL for the year ended December 31, 2023, 2022 and 2021, respectively), we do not unilaterally control their management or their operations, which puts a substantial portion of our net income and cash flow through dividend payments at risk from the actions or inactions of these entities. A significant reduction in the level of contribution by these entities to our net income would likely have a material adverse effect on our business, financial condition, results of operations or cash flows.

We face significant competition in the markets we serve and maintaining a competitive advantage requires consistent investment with uncertain returns.

The businesses and product lines in which we participate are very competitive and we risk losing business based on a wide range of factors, including price, quality, technological and engineering capability, manufacturing and distribution capability, innovation, performance, reliability and availability, geographic coverage, delivery and customer service. Our customers continue to seek technological innovation, productivity gains and competitive prices from us and our other suppliers. As a result of these and other factors, if we do not meet our customers’ expectations, we may not be able to compete effectively.

Additionally, we operate in highly competitive markets and have numerous competitors who are well-established in those markets. Our competitors include companies that may have greater name recognition or financial, technical, operational, marketing or other resources than us. We expect our competitors to continue improving the design and performance of their products and to introduce new products that could be competitive in both price and performance. We believe that we have certain technological advantages over our competitors in the markets in which we operate, but maintaining these advantages requires us to consistently invest in research and development, sales and marketing and customer service and support. There is no guarantee that we will be successful in maintaining these advantages.

The competitive environment in which we operate is also subject to change. There is no guarantee that we will be successful in implementing new product expansions, as we may fail to successfully complete product development or achieve the level of sales for these products that we expect. There may also be unexpected costs for such new product offerings, which would lower our margins. In addition, certain competitors may have a competitive advantage in these new markets and if they are able to successfully develop a product before we do, they could reach the market before we do or gain broader market acceptance.

Evolving customer needs and developing technologies may threaten our existing business and growth.

The ongoing energy transition away from fossil fuels and the increased adoption of electrified powertrains in some market segments could result in lower demand for current diesel or natural gas engines and components and, over time, reduce the demand for related parts and service revenues. Specifically, our core markets may be impacted by technology transitions, including the transition to battery-electric vehicles, hydrogen-powered internal combustion engines, fuel cell electric vehicles and alternate power sources. Substantially all of our net sales are related to internal combustion engine filtration products. Concerns regarding the effects of emissions of GHG on the climate have driven (and will likely continue to drive) international, national, regional and local

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legislative and regulatory responses, including those imposing more stringent emissions standards, requiring higher fuel efficiency and/or banning sales of gas-powered vehicles in the future. Such responses may generate or accelerate changes in technology and in customer and end-user preference, including wider adoption of, and preference for, technologies providing alternatives to diesel engines, such as electrification of equipment, which could reduce or eliminate the demand for our products.

Moreover, on November 15, 2019, Cummins, our largest customer, established a new set of goals for 2030 as part of its environmental sustainability strategy and since then has continued to implement such strategy to make progress towards its target of reaching carbon neutrality in its products and operations by 2050. Among Cummins’ new goals for 2030 is reducing its Scope 3 absolute lifetime GHG emissions from newly sold products, and partnering with its customers to reduce its indirect GHG emissions from its products. These goals may result in Cummins preferring products that reduce its direct and/or indirect GHG emissions. As a result of these risks, and as we have seen OEMs begin to invest heavily in these new technologies and launch new non internal combustion engines, we have been working, and continue to work, to expand our product offerings across industries and application types, including electric powertrain, hydrogen internal combustion engines and fuel cells, among others. However, there can be no assurance that we will be successful in doing so, or even if we are successful, that such new products will generate the same revenue or margin as internal combustion engine filtration products. Some of these technologies, such as battery electric vehicles, may not utilize as much filtration content. Additionally, there can be no assurance that our expectations regarding new and developing alternate fuel technologies, including with respect to which technologies will prevail and the development of filtration content for those technologies, will prove to be accurate. Such disruptive innovation could create new markets for others and displace existing companies and products. If we are unsuccessful in adapting our technologies or expanding into adjacent markets, these disruptions could result in significant negative consequences for us. Our future growth is dependent on properly addressing future customer and end-user needs and adapting our products in line with global technology trends.

We rely on our executive leadership team and other key personnel as a critical part of our human capital resources.

We depend on the skills, institutional knowledge, working relationships and continued services and contributions of key personnel, including our executive leadership team, as critical parts of our human capital resources. In addition, our ability to achieve our operating and strategic goals depends on our ability to identify, hire, train and retain qualified individuals. We compete with other companies, both within and outside of our industry, for talented personnel and we may lose key personnel or fail to attract, train and retain other talented personnel. Any such loss or failure could have material adverse effects on our business, financial condition, results of operations or cash flows.

In particular, our continued success will depend in part on our ability to retain the talents and dedication of key employees. As of December 31, 2023, we employed approximately 350 total technical employees. As of December 31, 2023, 45% of our technical employees were employed outside the United States, in India, China and France, many of whom we consider key employees. If enough key employees terminate their employment or become ill or otherwise cannot work, our business activities may be adversely affected and our management team’s attention may be diverted. In addition, we may not be able to locate suitable replacements for any key employees who leave.

We face risks from strategic transactions, such as acquisitions, divestitures, joint ventures and other similar arrangements that we may pursue or undertake.

We are actively evaluating potential strategic acquisitions or investment opportunities and consider divestitures of non-strategic business lines and the filtration business has historically pursued and undertaken certain of those opportunities. For example, in 1987 and 1994, our filtration business established our joint ventures in India and China, respectively, for our entry into those two markets, and has continued to explore additional joint ventures since then. Acquisitions, joint ventures and strategic investments could negatively impact our profitability and financial condition due to operating and integration inefficiencies, the incurrence of debt, contingent liabilities and amortization of expenses related to intangible assets. There are also a number of other risks inherent to acquisitions, including the potential loss of key customers and suppliers of the acquired businesses or adverse effects on relationships with existing customers and suppliers; the inability to identify all issues or potential liabilities during diligence; difficulties or delays in integrating and assimilating the acquired operations and products or in realizing projected efficiencies, growth prospects, cost savings and synergies; the

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loss of key employees; the potential increase in exposure to more onerous or costly legal and regulatory requirements and the diversion of management’s time and attention away from other business matters, which may prevent us from realizing the anticipated return on our investment. Additionally, we may require substantial additional capital, which could be raised pursuant to debt or equity financings, to pursue acquisitions and other business ventures, if any, in the future. We cannot assure you that we will be able to raise such additional capital on commercially reasonable terms, or at all. Divestitures may involve significant challenges and risks, such as difficulty separating out portions of our business or the potential loss of revenue or negative impacts on margins. Divestitures may also result in ongoing financial or legal proceedings, such as retained liabilities, which could have an adverse impact on our business, financial condition, results of operations and cash flows. Further, during the pendency of a proposed transaction, we may be subject to risks related to a decline in the business, loss of employees, customers or suppliers and the risk that the transaction may not close, any of which could adversely impact our business. Additionally, because acquisitions, divestitures, joint ventures, strategic partnerships and other similar arrangements are inherently risky, any such transaction may not be successful and may, in some cases, harm our business, financial condition, results of operations or cash flows. Failure to complete any such planned transaction may adversely impact our business, financial condition, results of operations or cash flows.

Our long term performance targets assume certain ongoing productivity improvements; if we do not successfully manage productivity improvements, we may not realize the expected benefits.

Our long-term performance targets assume certain ongoing productivity improvements as a key component of our business strategy to, among other things, contain operating expenses, increase operating efficiencies and align manufacturing capacity to demand. We may not be able to realize the expected benefits and cost savings if we do not successfully execute these plans while continuing to invest in business growth. Factors that can cause us to not realize expected benefits or execute our plans for productivity improvements include, but are not limited to, unanticipated costs or complications resulting from the Separation, unforeseen complications arising from leveraging existing filtration technology to new industries, global commodities pricing and availability, manufacturing costs and delays, inflationary pressures and labor availability. If any of these, or other, difficulties are encountered, expected benefits of such cost savings may not otherwise be realized, which could adversely impact our business, financial condition, results of operations or cash flows.

We may be adversely impacted by work stoppages and other labor matters.

As of December 31, 2023, we employed approximately 4,500 persons worldwide. As of December 31, 2023, approximately 53% of our employees worldwide were represented by various unions under collective bargaining agreements. Among these collective bargaining agreements, those for the employees in Mexico, Brazil and France are renewed annually after compensation negotiations, while the collective bargaining agreement for the Cookeville, Tennessee plant typically has a four- to five-year term. The collective bargaining agreement for Brazil is in place and active and the compensation negotiations for a new annual term on the collective bargaining agreements for Mexico and France were recently concluded. These collective bargaining agreements have terms that will expire between December 2024 and February 2025. The collective bargaining agreement for the Cookeville, Tennessee plant is expiring at the end of its four year term on February 29, 2024 and negotiations for its renewal started in January 2024. While we have no reason to believe that we will be materially impacted by work stoppages or other labor matters, there can be no assurance that future issues with our labor unions will be resolved favorably or that we will not encounter future strikes, work stoppages, or other types of conflicts with labor unions or our employees. For example, during periodic collective bargaining in 2020, the United Auto Workers union representing manufacturing employees at the Cookeville, Tennessee site conducted a strike for six weeks after failing to accept modified terms and conditions offered by the company. Any of these consequences may have an adverse effect on us or may limit our flexibility in dealing with our workforce. In addition, many of our customers and suppliers have unionized work forces. Work stoppages or slowdowns experienced by us, our customers or suppliers could result in slowdowns or closures that would have a material adverse effect on our business, financial condition, results of operations or cash flows.

Our products are exposed to variability in material and commodity costs.

Our business establishes prices with our customers in accordance with contractual timeframes; however, the timing of material and commodity market price increases may prevent us from passing these additional costs on to our customers through timely pricing actions, which may lead to an adverse impact on our profit margins. For example, our gross margin decreased by 1.3% from the year ended December 31, 2021 (24.3%)

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to the year ended December 31, 2022 (23.0%) as a result of our material and freight costs increasing at a faster rate than the increase in net sales. Additionally, higher material and commodity costs around the world may offset our efforts to reduce our cost structure. Economies around the world have also generally seen significant inflationary pressures since 2021. Although those inflationary pressures began to abate towards the end of 2023, we are still subject to the risk of material and commodity cost increases and there can be no assurances that such cost increases do not return in 2024 and beyond. As of the date of this Annual Report on Form 10-K, we have not entered into any hedging arrangements or agreements with respect to the purchase of the commodities used in our products. While we customarily have contractual pricing adjustment mechanisms with our first-fit customers that attempt to address some of these risks (notably with respect to steel and resins), there can be no assurance that material and commodity price fluctuations will not adversely affect our business, financial condition, results of operations or cash flows. In addition, while the use of contractual pricing adjustments may provide us with some protection from adverse fluctuations in commodity prices, we potentially forego the benefits that might result from favorable fluctuations in costs. As a result, higher material and commodity costs, as well as hedging these commodity costs during periods of decreasing prices, could result in declining margins.

We are vulnerable to raw material, transportation and labor price increases and supply shortages, which have adversely impacted and could continue to adversely impact our operations.

In recent years, we have experienced supply chain disruptions, including longer lead times for materials used in manufacturing our products and increased commodity prices and related challenges throughout the supply chain. For example, in the wake of the COVID-19 pandemic, shortages in steel, resin, other petrochemical products and electronic components, as well as shortages in labor at our suppliers, resulted in reduced capacity at our North America plants in 2021 and 2022. While conditions moderated in 2023, many of the underlying risks remain. We source a significant number of parts and raw materials critical to our business operations. Any delay in our suppliers’ deliveries may adversely affect our operations at multiple manufacturing locations, forcing us to seek alternative supply sources to avoid serious disruptions. Delays may be caused by factors affecting our suppliers (including pandemics, capacity constraints, port congestion, labor disputes, economic downturns, availability of credit, impaired financial condition and geopolitical turmoil), suppliers’ allocations to other purchasers, weather emergencies, natural disasters, acts of government or acts of war or terrorism. In particular, if there are extended periods of commercial, transportation or other restrictions we could incur global supply disruptions. Any extended delay in receiving critical supplies could impair our ability to deliver products to our customers and have a material adverse effect on our business, financial condition, results of operations or cash flows.

Although we have taken a number of actions to mitigate these impacts, including, but not limited to, adding new supply sources, moving production among our facilities or outsourcing production to third-party manufacturers, adapting product design to reduce reliance on constrained materials, and investing in additional tooling and equipment, these mitigating actions may not be sufficient to overcome these impacts.

Complexity of supply chain and manufacturing could perpetuate the inability to meet demand and result in the loss of customers.

Our ability to fulfill customer orders is dependent on our manufacturing and distribution operations. Although we forecast demand, additional plant capacity takes significant time to bring online and thus changes in demand could result in longer lead times. We cannot guarantee that we will be able to adjust manufacturing capacity, in the short-term, to meet higher customer demand. For example, the COVID-19 pandemic caused significant supply chain disruptions. These disruptions impacted the availability of raw materials, including steel, resin, other petrochemical products and electronic components, and freight availability and reliability, which resulted in increased lead times. Efficient operations require streamlining processes, which we may not be capable of achieving. Unacceptable levels of service for key customers may result if we are not able to fulfill orders on a timely basis or if product quality or warranty or safety issues result from compromised production. Due to the complexity of our manufacturing operations, we may be unable to timely respond to fluctuations in demand, which could adversely impact our business, financial condition, results of operations or cash flows.

While we have not experienced significant global surges or declines in demand, for much of 2022, overall demand exceeded our ability to fully meet such demand, resulting in an elevated level of backlog. For 2023, the level of backlog that accumulated during 2022 reduced and stabilized. As we move into 2024, there has been a reduction in these backlogs from peak levels, and we expect further stabilization in the first half of 2024.

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A number of our customers operate in similar cyclical industries and economic conditions in these industries could impact our sales.

Three customers each accounted for 10% or more of our net sales in 2023, 2022 and 2021. Cummins is one of our key customers and accounted for approximately 17.4% of our net sales in 2023. While our relationship with Cummins has been secured through our first-fit supply agreement and aftermarket supply agreement, both of which have an initial term of five years (except with respect to certain new products under the first-fit supply agreement, for which a five-year term commences from the date of the start of production), Cummins operates in both global off-highway and on-highway industries and is subject to the cyclicality of those industries. A number of our other customers, including PACCAR and the Traton Group, are also concentrated in similar cyclical industries, including off-highway industries such as construction, agriculture, mining, oil and gas and power generation, as well as on-highway industries such as truck, bus, vocational and recreational vehicles. This exposes our business to additional risk based on our customers’ respective economic conditions. Our success is also dependent on retaining key customers, which requires us to successfully manage relationships and anticipate the needs of our customers in the channels in which we sell our products. Changes in the economic conditions could materially and adversely impact our business, financial condition, results of operations or cash flows.

Our business is exposed to potential claims related to warranties and claims for support outside of standard warranty obligations.

We face an inherent business risk of exposure to warranty claims if our products fail to perform to specification, or are alleged to result in property damage. At any given time, we are subject to various and multiple warranty claims, any one of which, if decided adversely to us, may have a material adverse effect on our business, financial condition, results of operations and cash flows in the period in which our liability with respect to any such claim is recognized. This can include customer claims for support outside of standard warranty obligations.

Our products are subject to recall for performance or safety-related issues.

Our products are subject to recall for performance or safety-related issues. Product recalls subject us to reputational risk, loss of current and future customers, reduced revenue and product recall costs. Product recall costs are incurred when we decide, either voluntarily or involuntarily, to recall a product through a formal campaign to solicit the return of specific products due to known or suspected performance or safety issues. For example, in 2017, quality issues were identified with a particular application of a fuel heater, which primarily impacted one customer, resulting in a recall campaign beginning in 2020. See Note 11, Product Warranty Liability, to the consolidated financial statements for additional details. Any significant product recalls could have material adverse effects on our business, financial condition, results of operations and cash flows. Additionally, any significant returns or warranty claims, as well as the timing of such returns or claims, could result in significant additional costs to us and could adversely affect our business, financial condition, results of operations or cash flows.

Inability or failure to adequately protect or enforce our intellectual property could reduce or eliminate any competitive advantage and reduce our sales and profitability and the cost of protecting or enforcing our intellectual property may be significant.

Our long-term success depends on our ability to market innovative competitive products. We own a number of patents, trade secrets, copyrights, trademarks, trade names and other forms of intellectual property related to our products and services throughout the world and the operation of our business, on which we rely to distinguish our services and solutions from those of our competitors. Patents have a limited life and, in some cases, have expired or will expire in the near future. We also have non-exclusive rights to intellectual property owned by others in certain of our markets. For example, some of our products may include components that are manufactured by our competitors. Our intellectual property may be challenged, opposed, invalidated, diluted, cancelled, declared generic, stolen, circumvented, infringed or otherwise violated upon by third parties or we may be unable to maintain, renew or enter into new license agreements with third-party owners of intellectual property on reasonable terms, or at all. In addition, the global nature of our business increases the risk that our intellectual property may be subject to infringement, theft or other unauthorized use or disclosure by others. Our ability to protect and enforce intellectual property rights, including through litigation or other legal proceedings, also varies across jurisdictions. In some cases, our ability to protect or enforce our intellectual property rights by

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legal recourse or otherwise may be limited, particularly in countries where laws or enforcement practices are less protective than those in the United States. Our inability to obtain sufficient protection for our intellectual property, or to effectively maintain or enforce our intellectual property rights, could lead to reputational harm and/or adversely impact our competitive position, business, financial condition, results of operations or cash flows.

Competitors and others may also initiate litigation or other proceedings to challenge the scope, validity or enforceability of our intellectual property or allege that we infringed, misappropriated or otherwise violated their intellectual property. Any litigation or proceedings to defend us against allegations of infringement, misappropriation, or other violations of intellectual property rights, regardless of merit, could be costly, divert attention of management and may not ultimately be resolved in our favor. If we are unable to successfully defend against claims that we have infringed the intellectual property rights of others, we may be prevented from using certain intellectual property or offering certain products, or may be liable for substantial damages, which in turn could materially adversely affect our business, financial condition, results of operations or cash flows. We may also be required to develop an alternative, non-infringing product that could be costly, time-consuming or impossible, or seek a license from a third party, which may not be available on terms that are favorable to us, or at all. Any of the foregoing could have a material adverse effect on our business, financial condition, results of operations or cash flows.

If we fail to design and maintain effective internal control over financial reporting, our ability to timely and accurately report our financial condition and results of operations or comply with applicable laws and regulations could be impaired, which may adversely affect investor confidence in us and, as a result, the value of our common stock.

We identified a material weakness in our internal control over financial reporting during the period June 30, 2023 as a result of errors discovered in our financial statements for the three months ended March 31, 2023. These errors principally related to accounting for intercompany and related party transactions and required us to restate our financial statements as of and for the three months ended March 31, 2023 and revise our financial statements as of and for the three months ended March 31, 2022, and as of December 31, 2022 and 2021 and for each of the years ended December 31, 2022, 2021 and 2020. As of December 31, 2023, such material weakness has been remediated.

As a public company, we are required to maintain internal control over financial reporting and to evaluate and determine the effectiveness of our internal control over financial reporting. Beginning with our annual report on Form 10-K as of and for the year ending December 31, 2024, we will be required to provide a management report on internal control over financial reporting, as well as an attestation of our independent registered public accounting firm. As part of this reporting, we will be required to disclose any material weaknesses in our internal control over financial reporting.

A material weakness is a deficiency, or combination of deficiencies, in internal control over financial reporting such that there is a reasonable possibility that a material misstatement of our annual or interim consolidated financial statements will not be prevented or detected on a timely basis.

If material weaknesses exist in our internal control over financial reporting, we may have a higher likelihood of becoming subject to shareholder litigation or other litigation. We may lose investor confidence in the accuracy and completeness of our financial reports, the market price of our securities could decline, and we could be subject to sanctions or investigations by regulatory authorities. Further, failure to maintain effective internal control over financial reporting and disclosure controls and procedures could also restrict our future access to the capital markets.

Unexpected events, including natural disasters, may increase our cost of doing business or disrupt our operations.

There could be an occurrence of one or more unexpected events, including a terrorist attack, war or civil unrest, a weather event, an earthquake, a pandemic, cyber attack or other catastrophe in countries in which we operate or in which our suppliers are located.

Such an event could result in physical damage to and complete or partial closure of one or more of our headquarters, manufacturing facilities or distribution centers, temporary or long-term disruption in the supply of component products from some local and international suppliers, disruption in the transport of our products to customers and disruption of information systems. Prior to the IPO, Cummins’ existing insurance coverage, and following the IPO, the insurance coverage we entered into, may not provide protection for all costs that may arise from any such event. Any disruption in our operations could have an adverse impact on our ability to meet

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our customer needs or may require us to incur additional expenses in order to produce sufficient inventory. Certain unexpected events could adversely impact our business, financial condition, results of operations or cash flows.

Risks Related to Legal and Regulatory Issues

Sales of counterfeit versions of our products, as well as unauthorized sales of our products, may adversely affect our business, financial condition, results of operations or cash flows.

Third parties may illegally make, distribute and sell counterfeit versions of our products that do not meet the standards of our design, development, manufacturing and distribution processes. Such counterfeit products divert sales from genuine products, often are of lower cost and quality and may pose safety risks. If illegal sales of counterfeit products result in adverse product liability or negative consumer experiences, we may be associated with negative publicity resulting from such incidents. Although we proactively monitor the existence of counterfeit products and initiate actions to seize, remove them from sale or destroy, we may not be able to prevent third parties from manufacturing, selling or purporting to sell counterfeit products competing with our products, which may negatively impact our sales, brand reputation, business, financial condition, results of operations or cash flows.

Our products are subject to statutory and regulatory requirements that can significantly increase our costs and could have a material adverse impact on our business, financial condition, results of operations or cash flows.

Our products are subject to many laws and regulations in the jurisdictions in which we operate. We routinely incur costs in order to comply with these laws and regulations. We may be adversely impacted by new or changing laws and regulations that affect both our operations and our ability to develop and sell products that meet our customers’ requirements. The discovery of noncompliance issues could have a material adverse impact on our business, financial condition, results of operations or cash flows.

Developing products to meet more stringent and changing regulatory requirements, with different implementation timelines and requirements, makes developing products efficiently for multiple markets complicated and could result in substantial additional costs that may be difficult to recover in certain markets. The successful development and introduction of new and enhanced products in order to comply with new regulatory requirements are subject to other risks, such as delays in product development, cost overruns and unanticipated technical and manufacturing difficulties.

In addition to these risks, the nature and timing of government implementation and enforcement of increasingly stringent regulatory standards in our worldwide markets are unpredictable and subject to change. Any delays in implementation or enforcement could result in a loss of our competitive advantage and could have a material adverse impact on our business, financial condition, results of operations or cash flows.

We operate our business on a global basis and changes in international, national and regional trade laws, regulations, and policies affecting and/or restricting international trade, including sanctions resulting from Russia’s military operation in Ukraine, could adversely impact the demand for our products and our competitive position.

We manufacture, sell and service products globally and rely upon a global supply chain to deliver the raw materials, components, systems and parts that we need to manufacture and service our products. Changes in laws, regulations and government policies on foreign trade and investment can affect the demand for our products and services, causing customers and end-users to shift preferences toward domestically manufactured or branded products and impact the competitive position of our products or prevent us from being able to sell products in certain countries. Our business benefits from free trade agreements, such as the United States-Mexico-Canada Agreement, the U.S. trade relationships with China, Brazil and France and the Comprehensive Economic Partnership Agreement between India and South Korea. Efforts to withdraw from, or substantially modify such agreements or arrangements, in addition to the implementation of more restrictive trade policies, such as more detailed inspections, higher tariffs (including, but not limited to, additional tariffs on the import of steel or aluminum and imposition of new or retaliatory tariffs against certain countries, including based on developments in U.S.-China, U.S.-Russia and EU-Russia relations), import or export licensing requirements, and exchange controls or new barriers to entry, could limit our ability to capitalize on current and future growth opportunities in international markets, impair our ability to ship media from our plant in South Korea directly to

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our joint venture partners, impair our ability to expand the business by offering new technologies, products, and services, and could adversely impact our production costs, customer and end-user demand and our relationships with customers and suppliers. Any of these consequences could have a material adverse effect on our business, financial condition, results of operations or cash flows.

Embargoes, sanctions and export controls imposed by the U.S. and other governments restricting or prohibiting transactions with certain persons or entities, including financial institutions, to certain countries or regions, or involving certain products, may limit the sales of our products. Embargoes, sanctions, and export control laws are changing rapidly for certain geographies, including with respect to China and Russia. In particular, changing U.S. and European export controls and sanctions on China, as well as other restrictions affecting transactions involving China and Chinese parties and Russia and Russian parties, could affect our ability to collect receivables, provide aftermarket and warranty support for our products, sell products, and otherwise impact our reputation and business, any of which could have a material adverse effect on our business, financial condition, results of operations or cash flows. Moreover, the enforceability of contracts in China, especially with governmental entities, including state-owned enterprises, is relatively uncertain. If counterparties repudiated our contracts or defaulted on their obligations, we might not have adequate remedies. Such uncertainties or inability to enforce our contracts could materially and adversely affect our business, financial condition, results of operations or cash flows.

Additionally, the ongoing crisis related to Russia’s military operation in Ukraine (the “Russia-Ukraine War”) has resulted in the application of enhanced sanctions against Russia by a number of jurisdictions, including the United States, United Kingdom, and European Union. On March 17, 2022, the Cummins Board of Directors made the decision to suspend all commercial operations in Russia indefinitely, including our operations therein. Additionally, although we seek to comply with all applicable regulations, these laws and regulations are complex, frequently changing, and increasing in number and there is a risk that we will not be compliant with all relevant regulations at all times. Such potential violations could have material adverse effects on our reputation, brand, business, financial condition, results of operations or cash flows.

Unanticipated changes in our effective tax rate, the adoption of new tax legislation or exposure to additional income tax liabilities could adversely affect our profitability and cash flow. In addition, audits by tax authorities could result in additional tax payments for prior periods.

We are subject to income taxes in the U.S. and numerous international jurisdictions. Our income tax provision and cash tax liability in the future could be adversely affected by the adoption of new tax legislation, changes in the amounts or composition of earnings in countries with differing statutory tax rates, changes in the valuation of deferred tax assets and liabilities and the discovery of new information in the course of our tax return preparation process. Additionally, we may be subject to tax audits. These audits can involve complex issues, which may require an extended period of time to resolve and can be highly judgmental. Tax authorities may disagree with certain tax reporting positions taken by us and, as a result, assess additional taxes against us. We may have to engage in litigation to achieve the results reflected in our tax estimates, and such litigation may be time consuming and expensive. We regularly assess the likely outcomes of any audits in order to determine the appropriateness of our tax provision. The amounts ultimately paid upon resolution of these or subsequent tax audits could be materially different from the amounts previously included in our income tax provisions and accruals, which could materially and adversely affect our business, financial condition, results of operations or cash flows.

Changes in tax law relating to multinational corporations could adversely affect our tax position.

The U.S. Congress, government agencies in non-U.S. jurisdictions where we and our affiliates do business, and the Organisation for Economic Co-operation and Development (“OECD”) have recently focused on issues related to the taxation of multinational corporations. One example is in the area of “base erosion and profit shifting,” where profits are claimed to be earned for tax purposes in low-tax jurisdictions, or payments are made between affiliates from a jurisdiction with high tax rates to a jurisdiction with lower tax rates. The OECD has released several components of its comprehensive plan to create an agreed set of international rules for addressing base erosion and profit shifting. As a result, the tax laws in the United States and other countries in which we do business could change on a prospective or retroactive basis, and any such changes could adversely affect our business, financial condition, results of operations or cash flows.

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Our global operations are subject to laws and regulations that impose significant compliance costs and create reputational and legal risk.

Due to the international scope of our operations, we are subject to a complex system of commercial regulations around the world. Recent years have seen an increase in the development and enforcement of laws regarding trade compliance, as well as new regulatory requirements regarding privacy and data protection, such as the European Union General Data Protection Regulation. For example, in January 2024, the Tax Administration Service in Mexico amended the customs requirements for transactions between a maquiladora in Mexico shipping its manufactured goods to a domestic Mexican company, and to-date maquiladoras in Mexico, including our manufacturing facility in San Luis Potosi, have responded by exporting manufactured goods outside of Mexico and then re-importing them back into Mexico for delivery to domestic purchasers, resulting in increased costs for our Mexican operations. Our foreign subsidiaries and affiliates are governed by laws, rules and business practices that differ from those of the U.S. The activities of these entities may not comply with U.S. laws or business practices or our Code of Business Conduct. Violations of these laws may result in severe criminal or civil sanctions, could disrupt our business and result in an adverse effect on our reputation, business, financial condition, results of operations or cash flows. We cannot predict the nature, scope or effect of future regulatory requirements to which our operations might be subject or the manner in which existing laws might be administered or interpreted.

We are subject to national and international anti-corruption laws and regulations laws, such as the U.S. Foreign Corrupt Practices Act (“FCPA”), the U.K. Bribery Act (the “Bribery Act”) and export controls and economic sanctions programs, including those administered by the U.S. Treasury Department’s Office of Foreign Assets Control (“OFAC”), relating to our business and our employees. As part of our business, we deal with state-owned business enterprises, the employees of which are considered foreign officials for purposes of the FCPA’s prohibition on providing anything of value to foreign officials for the purposes of obtaining or retaining business or securing any improper business advantage. In addition, the provisions of the Bribery Act extend beyond bribery of foreign public officials and also apply to transactions with individuals that a government does not employ. Some of the international locations in which we operate lack a developed legal system and have higher than normal levels of corruption.

Our continued expansion outside the United States, including in China, India and developing countries, and our development of new partnerships worldwide, could increase the risk of FCPA, OFAC or Bribery Act violations in the future. Despite our policies, procedures and compliance programs, our internal control and compliance systems may not be able to protect it from prohibited acts willfully committed by our employees, agents or business partners that would violate such applicable laws and regulations. Additionally, there can be no assurance that our policies and procedures will effectively prevent us from violating these regulations in every transaction in which we may engage or provide a defense to any alleged violation. For example, actions taken by OFAC in response to the Russia-Ukraine War have included the imposition of export controls and broad financial and economic sanctions against Russia, Belarus and specific areas of Ukraine. Any violation or alleged violation of these laws and regulations, even if prohibited by our policies, could result in criminal or civil sanctions, reputational damage or other substantial costs and penalties, any of which could adversely affect our business, financial condition, results of operations or cash flows. In particular, we may be held liable for the actions that our joint venture partners take inside or outside of the United States, even though our partners may not be subject to these laws. Any such improper acts could damage our reputation, subject us to civil or criminal judgments, fines or penalties, and could otherwise disrupt our business.

Our operations are also subject to certain antitrust and competition laws in the jurisdictions in which we conduct our business, in particular the United States and Europe. These laws prohibit, among other things, anticompetitive agreements and practices. If any of our commercial agreements or practices are found to violate or infringe such laws, we may be subject to civil and other penalties. We may also be subject to third-party claims for damages. Further, agreements that infringe antitrust and competition laws may be void and unenforceable, in whole or in part, or require modification in order to be lawful and enforceable. Accordingly, any violation of these laws could harm our reputation and could have a material adverse effect on our business, financial condition, results of operations or cash flows.

From time to time, we are subject to litigation or other commercial disputes and other legal and regulatory proceedings relating to our business, including actual or perceived failure to comply with the laws and regulations mentioned above. Due to the inherent uncertainties of any litigation, commercial disputes or other legal or regulatory proceedings, we cannot accurately predict their ultimate outcome, including the outcome of

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any related appeals. An unfavorable outcome could materially adversely impact our business, financial condition, results of operations or cash flows. Furthermore, as required by U.S. GAAP, we establish reserves based on our assessment of contingencies, including contingencies related to legal claims asserted against us. Subsequent developments in legal proceedings may affect our assessment and estimates of the loss contingency recorded as a reserve and require us to make payments in excess of our reserves, which could have an adverse effect on our business, financial condition, results of operations or cash flows.

We may be adversely impacted by the effects of climate change and may incur increased costs and experience other impacts due to climate change.

The scientific consensus indicates that emissions of GHG continue to alter the composition of Earth’s atmosphere in ways that are affecting, and are expected to continue to affect, the global climate. The potential impacts of climate change on our customers and end-users, product offerings, operations, facilities and suppliers are accelerating and uncertain, as they will be particular to local, customer-specific circumstances. These potential impacts may include, among other things, rising sea levels and the frequency and severity of weather events as well as customer and end-user product changes either through preference or regulation.

Concerns regarding climate change may lead to additional international, national, regional and local legislative and regulatory responses. For example, proposed SEC rules to enhance disclosures regarding the effects of climate change could increase our reporting and compliance costs, and in October 2023, the California Governor signed the Climate-Related Financial Risk and the Climate Corporate Data Accountability Act into law, which impose significant and mandatory climate-related reporting requirements for large companies doing business in the state. Similarly, enhanced mandatory climate reporting requirements came into force in 2019 and again in 2022 in the United Kingdom and broader sustainability reporting requirements (including climate) will apply to certain European Union entities on a staged basis from 2024 and to their non-European Union parent undertakings from 2028. We believe these reporting requirements could increase our reporting and compliance costs. Various stakeholders, including legislators and regulators, shareholders and non-governmental organizations, are continuing to look for ways to reduce GHG emissions, including limits on GHG emissions, bans on future sales of gas-powered vehicles, and measures intended to incentivize GHG reduction such as fuel taxes, carbon taxes and subsidies. As the impact of any future GHG legislative or regulatory requirements on our global businesses and products is dependent on the timing, scope and design of the mandates or standards, we are currently unable to predict the potential impact. Moreover, as discussed in “— Risks Related to our Business Operations — Evolving customer needs and developing technologies may threaten our existing business and growth”, certain consequences of climate change, such as shifts in customer and end-user preferences and the pace and extent to which customers and end-users adopt alternative power, including electrified vehicles, could impact demand for our products and could have a material adverse effect on our business, financial condition, results of operations or cash flows.

Our operations are subject to increasingly stringent environmental laws and regulations, and we are also subject to laws requiring cleanup of contaminated property.

Our plants and operations are subject to increasingly stringent environmental laws and regulations in all of the countries in which we operate, including laws and regulations governing air emissions, wastewater and storm water discharges and the generation, handling, storage, transportation, treatment and disposal of waste materials. While we believe that we are in compliance in all material respects with these environmental laws and regulations, there can be no assurance that we will not be adversely impacted by costs, liabilities or claims with respect to existing or subsequently acquired operations, under either present laws and regulations or those that may be adopted or imposed in the future. We are also subject to laws requiring the cleanup of contaminated property, including laws that impose strict liability for contamination at owned property and for hazardous materials or wastes generated by our plants and operations or those of our predecessors. If a release of hazardous substances occurs at or from any of our (or our predecessors’) current or former properties or at a landfill or another location where we or our predecessors have disposed of (or arranged for the disposal of) hazardous materials, we may be held liable for the contamination and the amount of such liability could be material. We may become subject to additional evolving regulations related to the cleanup of contaminated property.

Risks Related to Cybersecurity and Information Technology Infrastructure

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Our information technology environment and our products are exposed to potential security or data breaches or other disruptions, which may adversely impact our operations.

We rely on the capacity, reliability and security of our information technology environment and data security infrastructure in connection with various aspects of our business activities. We also rely on our ability to expand and continually update these technologies and related infrastructure in response to the changing needs of our business. As we implement new technologies, they may not perform as expected. We face the challenge of supporting our older technologies and implementing necessary upgrades. In addition, some of these technologies are managed by third-party service providers and are not under our direct control. If we experience a problem with an important technology, including during upgrades and/or new implementations of technologies, the resulting disruptions could have an adverse effect on our business and reputation. As customers and end-users adopt and rely on cloud-based digital technologies and services we offer, any disruption of the confidentiality, integrity or availability of those services could have an adverse effect on our business and reputation.

Our operations routinely involve collecting, receiving, storing, processing and transmitting personal, sensitive and other confidential information pertaining to our business, customers, end-users, dealers, suppliers, employees and other sensitive matters. The data handled by our technologies is vulnerable to security threats. In addition, our products contain interconnected and increasingly complex technologies that monitor and transmit data and these technologies are potentially subject to cyber-attacks and disruption. For example, we have developed the filtration intelligence technology (FIT) system, which embeds sensors and software within the filtration equipment system designed to optimize filtration maintenance and monitor equipment health. In addition, we provide opportunities for remote working to our employees, which may pose additional information technology risks. The impact of a significant information technology event on either our information technology environment or our products could negatively affect the performance of our products, our reputation, and competitive position.

While we continually work to safeguard our information technology environment and mitigate potential risks, there is no assurance that these actions will be sufficient to timely detect or prevent information technology security threats, such as security breaches, computer malware, ransomware attacks and other cyber-attacks, which are increasing in both frequency and sophistication, along with power outages or hardware failures. These threats could result in unauthorized access, use, modification, disclosure, loss or theft of information, including intellectual property, costly investigations, remediation efforts, notification requirements, privacy or data protection-related compliance obligations, legal claims or proceedings, government enforcement actions, civil or criminal penalties, fines, diversion of management attention, operational changes or other response measures, loss of customer confidence in our security measures, loss of business partners, and negative publicity that could adversely affect our brand, reputation, business, financial condition, results of operations or cash flows. While we expect to obtain cyber insurance coverage, our cyber insurance policies may not cover, or may cover only a portion of, any potential claims related to such events or may not be adequate to indemnify us for all or any portion of liabilities that may be imposed or defense costs incurred. We also cannot be certain that we will be able to maintain insurance coverage, on acceptable terms or in amounts sufficient to cover the potentially significant losses that may result from a security incident or breach or that the insurer will not deny coverage of any future claim.

A number of our operations depend on information technology infrastructure and assets that are increasing in complexity, which are undergoing changes as a result of the Separation.

In order to support the new business processes under the terms of our transition services agreement with Cummins, we have made significant configuration, process and data changes within many of the information technology systems that we use. If our information technology systems and processes are not sufficient to support our business and financial reporting functions, or if we fail to properly implement our new business processes, manufacturing, shipping, invoicing or other critical operating activities may be interrupted or negatively affected, and our financial reporting may be delayed or inaccurate and, as a result, our business, financial condition, results of operations or cash flows may be materially adversely affected. Even if we are able to successfully configure and change our systems, all technology systems, even with implementation of security measures, are vulnerable to disability, failures or unauthorized access. If our information technology systems were to fail or be breached, this could materially adversely affect our reputation and our ability to perform critical business functions, and sensitive and confidential data could be compromised.

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Risks Related to Finance and Financial Market Conditions

We are subject to foreign currency exchange rate and other related risks.

We conduct operations in many areas of the world involving transactions denominated in a variety of currencies. We are subject to foreign currency exchange rate risk to the extent that our costs are denominated in currencies other than those in which we earn revenues. In addition, since our financial statements are denominated in U.S. dollars, changes in foreign currency exchange rates between the U.S. dollar and other currencies have had, and will continue to have, an impact on our business, financial condition, results of operations or cash flows. For example, 41% of our net sales in 2023 were denominated in a currency other than the U.S. dollar. Additionally, the appreciation of the U.S. dollar against foreign currencies has had and could continue to have a negative impact on our consolidated results of operations due to translation impacts. Although we did see a slightly favorable impact on our results of operations in the second half of 2023, we expect that the overall negative impact may continue in 2024. Cummins has a hedging program to mitigate foreign currency exchange rate risk across its businesses, which included foreign currency exchange rate risk faced by the filtration business. Although we have implemented certain aspects of our own hedging program, we are still evaluating other aspects, such as cash flow hedges, and there can be no assurances that we will be able to establish the same program as Cummins or at similar costs.

We have recorded goodwill as a result of prior acquisitions, and an economic downturn could cause these balances to become impaired, requiring write-downs that would reduce our operating income.

Goodwill amounted to approximately $84.7 million as of December 31, 2023. As required under current accounting rules, we assess goodwill for impairment at least annually and whenever changes in circumstances indicate that the carrying amount may not be recoverable from estimated future cash flows. As of December 31, 2023, management has deemed there is no impairment of our recorded goodwill. However, if future operating performance at one or more of our operating units were to fall significantly below forecast levels or if market conditions for one or more of our acquired businesses were to decline, we could be required to incur a non-cash charge to operating income for impairment. Management will continue to monitor our operating results, our market capitalization, and the impact of the economy to determine if there is an impairment of goodwill in future periods.

Risks Related to Macroeconomic and Geopolitical Conditions

Political, economic and social uncertainty in geographies where we have significant operations or large offerings of our products could significantly change the dynamics of our competition, customer and end-user base and product offerings and impact our growth opportunities globally.

Our business is subject to the political, economic and other risks that are inherent in operating in numerous countries, including:

•public health crises, including the spread of a contagious disease, such as COVID-19 and other catastrophic events;

•the difficulty of enforcing agreements and collecting receivables through foreign legal systems;

•trade protection measures and import or export licensing requirements;

•the imposition of taxes on foreign income and tax rates in certain foreign countries that exceed those in the U.S.;

•the imposition of tariffs, exchange controls, sanctions or other restrictions;

•difficulty in staffing and managing widespread operations and the application of foreign labor regulations;

•required compliance with a variety of foreign laws and regulations; and

•changes in general economic and political conditions, including changes in relationship with the U.S., in countries where we operate, particularly in China, India and other emerging markets.

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As we continue to operate and grow our business globally, our success will depend, in part, on our ability to anticipate and effectively manage these and other related risks. There can be no assurance that the consequences of these and other factors relating to our multinational operations will not have a material adverse effect upon our business, financial condition, results of operations or cash flows.

In addition, there continues to be significant uncertainty about the future relationships between the U.S. and China, including with respect to trade policies, treaties, government regulations and tariffs.

We currently have significant operations in China, including a joint venture and our wholly-owned subsidiary Cummins Filtration China. For the year ended December 31, 2023, total sales in China, including consolidated and non-consolidated sales from our joint venture, were approximately $265.1 million, an increase of $32.1 million compared to approximately $233.0 million for the year ended December 31, 2022. In the first half of 2022, the resurgence of COVID-19 in China led to lockdowns in several cities that negatively impacted the economy and our end markets. Among the cities impacted by these lockdowns was Shanghai, which resulted in the shutdowns of us and our China joint ventures’ Shanghai-based facilities, and the results from our China operations were adversely impacted in 2023 as a result of general market conditions in China. Equity, royalty and interest income from our China joint venture for the year ended December 31, 2023 was $5.9 million, an increase of $0.6 million compared to $5.3 million for the year ended December 31, 2022. In addition, any increased trade barriers or restrictions on global trade, especially trade with China, could adversely impact our competitive position, business, financial condition, results of operations or cash flows.

Risks arising from uncertainty in worldwide and regional market and economic conditions may harm our business and make it difficult to project long-term performance.

Our business is sensitive to global macroeconomic conditions. Future macroeconomic downturns may have an adverse effect on our business, financial condition, results of operations or cash flows, as well as on our distributors, customers, end-users and suppliers, and on activity in many of the industries and markets we serve. Among the economic factors which may have such an effect are: public health crises such as pandemics and epidemics, currency exchange rates, difficulties entering new markets, tariffs and governmental trade and monetary policies, and general economic conditions such as inflation, deflation, interest rates and credit availability.

For example, as a result of the global economic downturn triggered by the COVID-19 pandemic, we experienced a 3.8% decline in net sales during 2020 compared to the previous year. Most economies across the world slowed and, although we saw a recovery in 2021 (16.7% growth in net sales in 2021 compared to 2020), 2022 (8.6% growth in net sales in 2022 compared to 2021) and 2023 (4.2% growth in net sales in 2023 compared to 2022), there is still uncertainty as to whether the recovery will be sustained. If any or all of these major markets that we sell to were to endure a continued slowdown or recession, including as a result of a new outbreak of a global pandemic, other public health crises, economic disruption or otherwise decline, it could have a material adverse effect on our business, financial condition, results of operations, and cash flows. Additionally, in response to rising rates of inflation, the Federal Reserve Board increased the benchmark federal funds interest rates multiple times during the year ended December 31, 2023 but has signaled that there may be benchmark federal funds interest rate reductions in 2024. This rate environment and the speed with which it has been occurring, or could occur in the future, could have a material adverse effect on our business, financial condition, results of operations or cash flows.

In addition, we face several risks associated with international business and are subject to global events beyond our control, including war, trade disputes, economic sanctions, trade wars and their collateral impacts and other international events. Any of these events could have a material adverse effect on our reputation, business, financial condition, results of operations or cash flows. There may be changes to our business if there is instability, disruption or destruction in a significant geographic region, regardless of cause, including war, terrorism, riot, civil insurrection or social unrest; and natural or man-made disasters, including famine, flood, fire, earthquake, storm or disease.

Risks Related to our Relationship with Cummins

As a result of the Separation, we lost Cummins’ reputation, economies of scale, capital base and other resources and may experience difficulty operating as a standalone company.

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Our association with Cummins has contributed to the relationships we have with certain significant customers and suppliers due to the relationship those customers and suppliers had with Cummins. Cummins cooperated in selling our products to Cummins’ customers. After the Separation, we may not be able to attract new customers of Cummins, or retain existing customers, without Cummins’ support. If this occurs, it could result in reduced sales of our products.

The loss of Cummins’ scale, capital base and financial strength may also prompt suppliers to reprice, modify or terminate their relationships with us, in particular if such suppliers had placed a premium on the Cummins brand or our relationship with Cummins. In addition, Cummins’ reduction of its ownership of us could potentially cause some of our existing agreements and licenses to be terminated. We cannot predict with certainty the effect that the Separation will have on our business, our clients, vendors or other persons, or whether our Fleetguard brand will experience dilution in the marketplace.

Further, because we have limited experience operating as a standalone company following the Separation, we may encounter difficulties doing so in the future. For example, if we do not accurately estimate the level of resources required to operate as a standalone company, we may need to acquire additional assets and resources, which could be costly, and in connection with the Separation, may also face difficulty in separating certain aspects of our business from Cummins, including incurring accounting, tax, legal and other professional services costs, recruiting and relocation costs associated with hiring or reassigning our personnel, costs related to establishing a new brand identity in the marketplace and costs to separate information systems and creating standalone administrative units in our business post-separation. Our business, financial condition, results of operations or cash flows could be materially adversely affected if we have difficulty operating as a standalone company.

We, or Cummins, may fail to perform under various transaction agreements that were executed as part of the IPO or we may fail to have necessary systems and services in place when certain of the transaction agreements expire.

The separation agreement and other agreements entered into in connection with the IPO determined the allocation of assets and liabilities between Cummins and us following the IPO for those respective areas and include certain indemnifications related to liabilities and obligations. The transition services agreement provides for the performance of certain services by Cummins and us for the benefit of the other for a period of time after the IPO. We will rely on Cummins to satisfy Cummins’ performance and payment obligations under these agreements. If Cummins is unable to satisfy its obligations under these agreements, including its indemnification obligations, we could incur operational difficulties or losses. If we do not have in place our own systems and services, or if we do not have agreements with other providers of these services once certain transaction agreements expire, we may not be able to operate our businesses effectively and our business, financial condition, results of operations or cash flows could be materially adversely affected. We are in the process of creating our own, or engaging third parties to provide, systems and services to replace many of the systems and services that Cummins currently provides to us. However, we may not be successful in implementing these systems and services or in transitioning data from Cummins’ systems to us. In addition, we have historically received certain informal support from Cummins, including customer relationship management, marketing, communications, technical support, market intelligence and market data, which may not be addressed in our transition services agreement. The level of this informal support may be eliminated following the Separation.

We also have established or expanded our own tax, treasury, internal audit, investor relations, corporate governance and listed company compliance and other corporate functions. We have been incurring and expect to continue incurring one-time costs to replicate, or outsource from other providers, these corporate functions to replace the corporate services that Cummins historically provided us prior to the IPO. Any failure or significant downtime in our own financial, administrative or other support systems or in the Cummins financial, administrative or other support systems during the transitional period during which Cummins provides us with support could negatively impact our results of operations or prevent us from paying our suppliers and employees, executing business combinations and foreign currency transactions or performing administrative or other services on a timely basis, which could have an adverse effect on our business, financial condition, results of operations or cash flows.

In particular, our day-to-day business operations rely on our information technology systems. A significant portion of the communications among our personnel, customers and suppliers take place on our information

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technology platforms. We expect the separation of information technology systems from Cummins to be complex, time-consuming and costly. There is risk of data loss in the process of transferring information technology. As a result of our reliance on information technology systems, the cost of such information technology integration and transfer and any such loss of key data could have an adverse effect on our business, financial condition, results of operations or cash flows.

In addition, our historical consolidated financial statements include the attribution of certain assets and liabilities that historically have been held at the Cummins corporate level but which are specifically identifiable or attributable to the businesses transferred to us in connection with the Separation. The value of the assets and liabilities we assumed in connection with the Separation could ultimately be materially different than such attributions, which could have a material adverse effect on our business, financial condition, results of operations or cash flows.

Certain of our executive officers and directors may have actual or potential conflicts of interest because of their equity interest in Cummins.

A majority of our current directors are employees of Cummins. Any director who is an employee of Cummins will own Cummins common stock or equity awards. Additionally, certain of our executive officers own Cummins common stock or equity awards. The position of such individuals and their ownership of any Cummins equity or equity awards create, or may create the appearance of, conflicts of interest when these individuals are faced with decisions that could have different implications for Cummins than for us.

Cummins and its directors and officers will have limited liability to us or you for breach of fiduciary duty.

Subject to any contractual provision to the contrary, Cummins has no obligation to refrain from engaging in certain actions that may not be in our best interests.

Under our amended and restated certificate of incorporation, neither Cummins nor any officer or director of Cummins, including our directors who are also Cummins employees, except as provided therein, will be liable to us or to our shareholders for breach of any fiduciary duty by reason of any of these activities.

Potential indemnification liabilities to Cummins pursuant to the separation agreement could materially and adversely affect our businesses, financial condition, results of operations and cash flows.

The separation agreement, among other things, provides for indemnification obligations designed to make us financially responsible for liabilities that may exist relating to our business activities, whether incurred prior to or after the Separation. If we are required to indemnify Cummins under the circumstances set forth in the separation agreement, we may be subject to substantial liabilities.

In connection with the Separation, Cummins has indemnified us for certain liabilities. However, there can be no assurance that the indemnity will be sufficient to insure us against the full amount of such liabilities, or that Cummins’ ability to satisfy its indemnification obligation will not be impaired in the future.

Pursuant to the separation agreement and certain other agreements with Cummins, Cummins agreed to indemnify us for certain liabilities as discussed further in “Agreements Between Cummins and Atmus and Other Related Party Transactions — Relationship between Atmus and Cummins — Separation Agreement — Release of Claims and Indemnification.” However, third parties could also seek to hold us responsible for any of the liabilities that Cummins has agreed to retain, and there can be no assurance that the indemnity from Cummins will be sufficient to protect us against the full amount of such liabilities, or that Cummins will be able to fully satisfy its indemnification obligations. In addition, Cummins’ insurance will not necessarily be available to us for liabilities associated with occurrences of indemnified liabilities prior to the IPO, and in any event Cummins’ insurers may deny coverage to us for liabilities associated with certain occurrences of indemnified liabilities prior to the IPO. Moreover, even if we ultimately succeed in recovering from Cummins or such insurance providers any amounts for which we are held liable, we may be temporarily required to bear these losses. Each of these risks could negatively affect our business, financial condition, results of operations or cash flows.

We may have received better terms from unaffiliated third parties than the terms we received in our agreements with Cummins.

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The agreements we entered with Cummins in connection with the separation, including the separation agreement, transition services agreement, employee matters agreement, tax matters agreement, intellectual property license agreement, first-fit supply agreement, aftermarket supply agreement, transitional trademark license agreement and the registration rights agreement, were prepared in the context of our separation from Cummins while we were still a wholly-owned subsidiary of Cummins. Accordingly, during the period in which the terms of those agreements were prepared, we did not have an independent board of directors or a management team that was independent of Cummins. As a result, the terms of those agreements may not reflect terms that would have resulted from arm’s-length negotiations between unaffiliated third parties. Arm’s-length negotiations between Cummins and an unaffiliated third party in another form of transaction, such as a buyer in a sale of a business transaction, may have resulted in more favorable terms to the unaffiliated third party.

Risks Related to our Capital Structure

Changes in the capital and credit markets may negatively affect our ability to access financing to support strategic initiatives.

Disruption of the global financial and credit markets may have an effect on our long-term liquidity and financial condition. For example, the closures of Silicon Valley Bank and Signature Bank in March 2023 and their placement into receivership with the Federal Deposit Insurance Corporation created financial institution liquidity risk and concerns. Our operations, investment opportunities, access to capital and ability to enforce the obligations of counterparties may be adversely affected by disruptions to the banking system and other financial market volatility. There can be no assurance that the cost or availability of future borrowings will not be impacted by future capital market disruptions. Our term loan agreement and revolving credit facility each contain covenants to maintain certain financial ratios that, under certain circumstances, could restrict our ability to incur additional indebtedness, make investments and other restricted payments, create liens and sell assets.

We have substantial indebtedness, consisting of the term loan and the revolving credit facility, and may incur substantial additional debt from time to time, which may impact our ability to service all our indebtedness and react to changes in our industry and limit our ability to seek further financing on favorable terms.

We have approximately $600 million of outstanding indebtedness consisting of the term loan and amounts drawn under the revolving credit facility as of December 31, 2023. See “Description of Material Indebtedness of Atmus.”

Our ability to make scheduled payments on or refinance our debt obligations depends on our financial condition and operating performance, which are subject to prevailing economic and competitive conditions and to certain financial, business, legislative, regulatory and other factors beyond our control. We may be unable to maintain a level of cash flows from operating activities sufficient to permit us to pay the principal and interest on our indebtedness.

If our cash flows and capital resources are insufficient to fund our debt service obligations, we could face substantial liquidity problems and could be forced to reduce or delay investments and capital expenditures or to dispose of material assets or operations, alter our dividend policy, seek additional debt or equity capital or restructure or refinance our indebtedness. We may not be able to effect any such alternative measures on commercially reasonable terms or at all and, even if successful, those alternative actions may not allow us to meet our scheduled debt service obligations. The instruments that will govern our indebtedness may restrict our ability to dispose of assets and may restrict the use of proceeds from those dispositions and may also restrict our ability to raise debt or equity capital to be used to repay other indebtedness when it becomes due. We may not be able to consummate those dispositions or to obtain proceeds in an amount sufficient to meet any debt service obligations when due.

In addition, we conduct operations through our subsidiaries and joint ventures. Accordingly, repayment of our indebtedness will depend on the generation of cash flow by these entities, and their ability to make such cash available to us, by dividend, debt repayment or otherwise. These entities may not have any obligation to pay amounts due on our indebtedness or to make funds available for that purpose. These entities may not be able to, or may not be permitted to, make adequate distributions to enable us to make payments in respect of our indebtedness. Each of these entities is a distinct legal entity and, under certain circumstances, legal, tax and contractual restrictions may limit our ability to obtain cash from them. In the event that we do not receive

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distributions from these entities, we may be unable to make required principal and interest payments on our indebtedness.

Our inability to generate sufficient cash flows to satisfy our debt obligations, or to refinance our indebtedness on commercially reasonable terms or at all, may materially adversely affect our business, financial condition, results of operations and cash flows and our ability to satisfy our obligations under our indebtedness or pay dividends on our common stock.

We may incur substantial additional debt from time to time, including secured indebtedness, to finance working capital, capital expenditures, research and development, investments or acquisitions or for other purposes. If we do so, the risks related to our high level of debt could intensify. Specifically, our high level of debt could have important consequences, including:

•making it more difficult for us to satisfy our obligations with respect to our debt;

•limiting our ability to obtain additional financing to fund future working capital, capital expenditures, business development or other general corporate requirements, including dividends;

•increasing our vulnerability to general adverse economic and industry conditions;

•exposing us to the risk of increased interest rates as certain of our borrowings are and may in the future be at variable rates of interest;

•limiting our flexibility in planning for and reacting to changes in our industry;

•impacting our effective tax rate; and

•increasing our cost of borrowing.

Substantially all of our assets, subject to certain exceptions, are pledged as security for our term loan and revolving credit facility, and if we default on our obligations, we may suffer adverse consequences, including foreclosure on our assets.

In connection with the revolving credit facility and term loan, we signed a pledge and security agreement, whereby all of our assets, subject to certain exceptions, are pledged as collateral to secure borrowings thereunder. If we default on our obligations under such facilities, the lenders may have the right to foreclose upon and sell, or otherwise transfer, the collateral subject to their security interests or their superior claim. In such event, we may be forced to sell our investments to raise funds to repay our outstanding borrowings in order to avoid foreclosure and these forced sales may be at times and at prices we would not consider advantageous. Moreover, such deleveraging of us could significantly impair our ability to effectively operate our business in the manner in which we intend to operate. As a result, we could be forced to curtail or cease new investment activities and lower or eliminate any dividends that we may pay to our shareholders in the future.

In addition, if the lenders exercise their right to sell the assets pledged under our secured credit facilities, such sales may be completed at distressed sale prices, thereby diminishing or potentially eliminating the amount of cash available to us after repayment of the amounts outstanding under such facilities.

Risks Related to Ownership of our Common Stock

The price of our common stock may fluctuate substantially, and you could lose all or part of your investment in our common stock as a result.

Our common stock has a limited trading history and there may be wide fluctuations in the market value of our common stock as a result of many factors. From our IPO through February 13, 2024, the sales price of our common stock as reported by the New York Stock Exchange (the “NYSE”) has ranged from a low sales price of $18.21 on November 1, 2023 to a high sales price of $25.39 on December 15, 2023. Factors that may cause the market price of our Common Stock to fluctuate, some of which may be beyond our control, include:

•Our quarterly or annual earnings, or those of other companies in our industry;

•actual or anticipated fluctuations in our operating results;

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•changes in earnings estimated by securities analysts or our ability to meet those estimates;

•the operating and stock price performance of other comparable companies;

•changes to the regulatory and legal environment in which we operate;

•overall market fluctuations and domestic and worldwide economic conditions; and

•other factors described in these “Risk Factors” and elsewhere in this Annual Report on Form 10-K.

Stock markets in general have experienced volatility that has often been unrelated to the operating performance of a particular company. These broad market fluctuations may adversely affect the trading price of our Common Stock. In the past, following periods of volatility in the overall market and the market price of a company’s securities, securities class action litigation has often been instituted against these companies. Such litigation, if instituted against us, could result in substantial costs and a diversion of our management’s attention and resources.

We have not yet determined whether or the extent to which we will pay any dividends on our common stock or the timing or amount of such dividends.

We have not yet determined whether or the extent to which we will pay any dividends on our common stock. The declaration, amount and payment of any future dividends will be at the discretion of our board of directors in accordance with applicable law. Our board of directors may take into account general economic and business conditions, our financial condition and operating results, our available cash and current and anticipated cash needs, capital requirements, contractual, legal, tax and regulatory restrictions and implications on the payment of dividends by us to our shareholders or by our subsidiaries to us, and such other factors as our board of directors may deem relevant. Our ability to pay dividends will depend on our ongoing ability to generate cash from operations and on our access to the capital markets. We cannot guarantee that it will pay a dividend in the future or continue to pay any dividends if it commences paying dividends.

Applicable laws and regulations, provisions of our amended and restated certificate of incorporation and bylaws and certain contractual rights granted to Cummins may discourage takeover attempts and business combinations that shareholders might consider in their best interests.

Applicable laws, provisions of our amended and restated certificate of incorporation and bylaws and certain contractual provisions under the separation agreement that may delay, deter, prevent or render more difficult a takeover attempt that our shareholders might consider in their best interests. For example, they may prevent our shareholders from receiving the benefit from any premium to the market price of our Common Stock offered by a bidder in a takeover context. Even in the absence of a takeover attempt, the existence of these provisions may adversely affect the prevailing market price of our Common Stock if they are viewed as discouraging takeover attempts in the future.

Our amended and restated certificate of incorporation and bylaws provide provisions that are intended to encourage prospective acquirers to negotiate with our board of directors and management team, rather than to attempt a hostile takeover, which could deter coercive takeover practices and inadequate takeover bids. These provisions provide for:

•a classified board of directors, with our board of directors divided into three classes and with each class serving a staggered three-year term;

•advance notice requirements regarding how our shareholders may present proposals or nominate directors for election at shareholder meetings (except for Cummins’ designation of persons for nomination by the board of directors);

•the right of our board of directors to issue one or more series of preferred stock with such powers, rights and preferences as the board of directors shall determine;

•after Cummins no longer owns a majority of the outstanding shares of our Common Stock, the inability of shareholders to call special meetings of shareholders and the requirement that all shareholder action be taken at a meeting rather than by written consent;

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•after Cummins no longer owns a majority of the outstanding shares of our Common Stock, our directors may be removed only for cause and only by a 75% shareholder vote; and

•a 75% shareholder vote requirement to amend the section of our amended and restated certificate of incorporation and bylaws related to (i) our board of directors, including related to our classified board of directors and the removal of directors only for cause; (ii) our shareholders, including related to the inability of shareholders to call special meetings of shareholders and the inability of shareholders to act by written consent; and (iii) the ability of our board of directors and our shareholders to amend or repeal our bylaws.

Under the tax matters agreement with Cummins, we are subject to certain restrictions, including restrictions on our ability to enter into acquisition, merger, liquidation, sale and stock redemption transactions with respect to our stock. These restrictions may limit our ability to pursue certain strategic transactions or other transactions that it may believe to be in the best interests of our shareholders or that might increase the value of our business.

We are also subject to Section 203 of the Delaware General Corporation Law (the “DGCL”), an anti-takeover statute. In general, Section 203 of the DGCL prohibits a publicly held Delaware corporation from engaging in a “business combination” with an “interested stockholder” for a period of three years following the time the person became an interested stockholder.

These limitations may adversely affect the prevailing market price and market for our Common Stock if they are viewed as limiting the liquidity of our stock or discouraging takeover attempts in the future.

The provision of our amended and restated certificate of incorporation designating the Court of Chancery in the State of Delaware and the federal district courts for the District of Delaware as the exclusive forums for certain types of lawsuits may have the effect of discouraging lawsuits against our directors and officers.

Our amended and restated certificate of incorporation provides that, unless we consent in writing to the selection of an alternative forum, to the extent permitted by law, the Court of Chancery of the State of Delaware (or, if the Court of Chancery does not have jurisdiction, the federal district court for the District of Delaware) shall be the sole and exclusive forum for: (i) any derivative action or proceeding brought on behalf of us, (ii) any action asserting a claim of breach of fiduciary duty owed by any director, officer or other employee of us to us or our shareholders, (iii) any action arising pursuant to any provision of the DGCL, our amended and restated certificate of incorporation or our bylaws or (iv) any action asserting a claim governed by the internal affairs doctrine. It further provides that, unless we consent in writing to the selection of an alternative forum, to the extent permitted by law, the federal district courts of the U.S. shall be the exclusive forum for the resolution of any complaint asserting a cause of action arising under the Securities Act of 1933, as amended (the “Securities Act”). The exclusive forum clauses described above shall not apply to suits brought to enforce a duty or liability created by the Securities Exchange Act of 1934, as amended (the “Exchange Act”) or any other claim for which the federal courts have exclusive jurisdiction. Any person or entity purchasing or otherwise acquiring any interest in shares of our common stock will be deemed to have notice of, and consented to, the exclusive forum provisions in our amended and restated certificate of incorporation.

Although we believe these provisions benefit us by providing increased consistency in the application of applicable law in the types of lawsuits to which they apply, the provisions may have the effect of discouraging lawsuits against our directors and officers and may limit a shareholder’s ability to bring a claim in a judicial forum it finds favorable for disputes with us or our directors, officers or employees. The enforceability of similar choice of forum provisions in other companies’ certificates of incorporation has been challenged in legal proceedings and there is uncertainty as to whether a court would enforce such provisions, in particular with respect to causes of action arising under the Securities Act. In addition, investors cannot waive compliance with the federal securities laws and the rules and regulations thereunder. It is possible that, in connection with any applicable action brought against us, a court could find the choice of forum provisions contained in our amended and restated certificate of incorporation to be inapplicable or unenforceable in such action. If so, we may incur additional costs associated with resolving such action in other jurisdictions, which could adversely affect our business, financial condition, results of operations or cash flows.

The price of our common stock may fluctuate substantially.

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You should consider an investment in our common stock to be risky and you should invest in our Common Stock only if you can withstand a significant loss and wide fluctuations in the market value of your investment. Some factors that may cause the market price of our common stock to fluctuate, in addition to the other risks mentioned in this section of the Annual Report on Form 10-K, are:

•Our announcements or our competitors’ announcements regarding new products, enhancements, significant contracts, acquisitions or strategic investments;

•changes in earnings estimates or recommendations by securities analysts, if any, who cover our common stock;

•failure to meet external expectations or management guidance;

•fluctuations in our quarterly financial results or the quarterly financial results of companies perceived to be similar to us;

•changes in our capital structure or dividend policy, including as a result of the Separation, future issuances of securities, sales of large blocks of common stock by our shareholders, including Cummins, or our incurrence of additional debt;

•reputational issues;

•changes in general economic and market conditions in or any of the regions in which we conduct our business;

•changes in industry conditions or perceptions;

•changes in applicable laws, rules or regulations and other dynamics; and

•announcements or actions taken by Cummins as our principal shareholder.

In addition, if the market for stocks in our industry or related industries, or the stock market in general, experiences a loss of investor confidence, the trading price of our Common Stock could significantly decline for reasons unrelated to our business, financial condition, results of operations or cash flows. If any of the foregoing occurs, it could cause our stock price to fall and may expose us to lawsuits that, even if unsuccessful, could be costly to defend and a distraction to management and could also require us to make substantial payments to satisfy judgments or settle litigation.

Our historical consolidated financial statements are not necessarily representative of the results we would have achieved as a standalone company and may not be a reliable indicator of our future results.

Our historical consolidated financial statements included in this Annual Report on Form 10-K do not reflect the financial condition, results of operations or cash flows we would have achieved as a standalone company during the periods presented or those it will achieve in the future. This is primarily the result of the following factors:

•Prior to the Separation, our business was operated by Cummins as part of its broader corporate organization, rather than as an independent, publicly traded company. Cummins or one of its affiliates performed various corporate functions that are provided on a centralized basis within Cummins, such as expenses for executive oversight, treasury, legal, finance, human resources, tax, internal audit, financial reporting, information technology and investor relations that may be higher or lower than the comparable expenses we would have actually incurred, or will incur in the future, as a standalone company;

•Significant increases have occurred in our cost structure as a result of the IPO, including costs related to public company reporting, investor relations and compliance with the Sarbanes-Oxley Act;

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•Our historical consolidated financial statements reflect the direct and indirect costs for the services historically provided by Cummins. Following the completion of the IPO, Cummins currently provides some of these services to us on a transitional basis pursuant to the Transition Services Agreement. Our historical consolidated financial statements do not reflect our obligations under the various transitional agreements we entered into with Cummins in connection with the Separation. At the end of the transitional periods specified in these agreements, we will need to perform these functions itself or hire third parties to perform these functions on its behalf, and these costs may exceed the comparable expenses we have incurred in the past;

•Our working capital requirements and capital expenditures have historically been satisfied as part of Cummins’ corporate-wide cash management and centralized funding programs, and Atmus’ cost of debt and other capital may differ from the historical amounts reflected in Atmus’ historical consolidated financial statements;

•Our cost of debt and capital structure will be different from that reflected in our historical consolidated financial statements; and

•The IPO and the Separation may have a material effect on our customers and other business relationships, including supplier relationships, and may result in the loss of preferred pricing available by virtue of our reduced relationship with Cummins.

Our financial condition and future results of operations will be materially different from amounts reflected in our historical consolidated financial statements included elsewhere in this Annual Report on Form 10-K. As a result of the Separation, it may be difficult for investors to compare our future results to historical results or to evaluate our relative performance or trends in our business.

The obligations associated with being an independent, publicly traded company will require significant resources and management attention.

We are subject to reporting and other obligations under the Exchange Act, the Sarbanes-Oxley Act, the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 and the rules and regulations of the SEC and the NYSE. As an independent, publicly traded company, we are required to:

•prepare and distribute periodic reports, proxy statements and other shareholder communications in compliance with the federal securities laws and rules;

•have our own board of directors and committees thereof, which comply with federal securities laws and rules and applicable NYSE requirements;

•maintain an internal audit function;

•institute our own financial reporting and disclosure compliance functions;

•establish an investor relations function; and

•establish internal policies, including those relating to trading in our securities and disclosure controls and procedures.

These reporting and other obligations place significant demands on our management, diverting their time and attention from sales-generating activities to compliance activities, and require increased administrative and operational costs and expenses that we did not incur prior to the IPO, which could adversely affect our business, financial condition, results of operations or cash flows.

Item 1B. Unresolved Staff Comments

None.

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Item 1C. Cybersecurity

Our management and board of directors (the “Board”) recognize the importance of maintaining the capacity, reliability and security of our information technology environment and data security infrastructure to deliver on the expectations, and maintain the trust and confidence, of our customers, clients, business partners, employees and investors. The Board is actively involved in our risk management practices, including oversight of our overall enterprise risk management (“ERM”) framework, in which cybersecurity risk management is reviewed by the board at least on an annual basis. Our cybersecurity and privacy programs align with the recognized frameworks established by the National Institute of Standards and Technology and leverage the International Organization for Standardization and other applicable industry standards. The focus of our cybersecurity program is preserving the confidentiality, security and availability of our systems and data, preventing and mitigating cybersecurity threats and effectively responding to cybersecurity incidents when they occur.

Cybersecurity Risk Management and Strategy

We have established and implemented processes to assess, identify and manage material cybersecurity risks. Cybersecurity risks are assessed, identified and managed by our Director of Global Cybersecurity, with direct supervision by our Chief Information Officer (“CIO”) and with the assistance of our internal audit and legal teams. Our Director of Global Cybersecurity shares information regarding such risks with our management’s senior level information security council (the “Information Security Council”), which consists of our CIO, Chief Financial Officer, Chief Technical Officer, Chief Legal Officer & Corporate Secretary, Vice President of Strategy and Director of Internal Audit & Enterprise Risk Management, and which supports the Audit Committee’s oversight of cybersecurity risk, including by providing regular reports on various cybersecurity matters.

We have in place robust physical, technical, administrative, and organizational controls for the securing of our information systems.

We maintain a comprehensive, risk-based, third-party risk management process to identify, assess and manage cybersecurity risks associated with third-party service providers. Third-party service providers undergo thorough pre-engagement due diligence, including security and privacy assessments. All service providers are required to enter into contracts containing security and data processing terms no less stringent than those employed by us in safeguarding our own data. Any third-party service providers with access to confidential or sensitive data are subject to ongoing oversight activities, including assessments and audits, throughout the lifetime of the engagement.

Additionally, we maintain a comprehensive incident response plan (the “Incident Response Plan”), which establishes a comprehensive, effective and repeatable process for identifying, escalating and responding to cybersecurity incidents. We test and evaluate the Incident Response Plan, including contingency and recovery plans, on a regular basis, and we develop, implement and review contingency and recovery plans for information systems, both internal and vendor managed. The results of such assessments drive changes and enhancements to governance, policies, procedures, technologies and partner decisions to continuously monitor and improve our cybersecurity risk management. The Information Security Council practiced the procedures of the Incident Response Plan through a tabletop exercise facilitated by external consultants in October 2023, and a similar exercise is planned for the Board during 2024. We also leverage third-party support, including vendors, consultants and assessors, to analyze risk exposure, to identify remediation opportunities and to reduce our overall cybersecurity risk.

Previous cybersecurity incidents have not materially affected us, including our business strategy, financial condition, results of operations or cash flows. However, risks from cybersecurity threats, including but not limited to security breaches, computer malware, ransom attacks, other cyber-attacks, or other similar threats may materially affect us, including our business, financial condition, results of operations or cash flows.

Governance

The Board oversees the Company’s overall ERM process, including the management of risks arising from cybersecurity threats. The Audit Committee is responsible for overseeing our risk exposure to information security, cybersecurity and data protection, as well as the steps management has taken to monitor and control such exposures, and regularly provides reports to the Board on cybersecurity risk management. The Audit Committee Charter was amended in October 2023 to explicitly set forth the Audit Committee’s responsibility for

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such oversight. The Audit Committee receives regular presentations and reports from our Director of Global Cybersecurity and our CIO on cybersecurity risks and prompt and timely information regarding any cybersecurity incident that meets established reporting thresholds. Our Information Security Council also report to the Board at least annually on data protection and current internal and external developments in cybersecurity, as part of the Board’s enterprise risk management review, and the Board receives reports of Audit Committee discussions regarding its oversight of cybersecurity risk. We have protocols by which certain cybersecurity incidents that meet established reporting thresholds are escalated internally and, where appropriate, reported to the Audit Committee or the Board in a timely manner.

Our Global Cybersecurity Operations function is a global team led by our Director of Global Cybersecurity, who reports to our CIO. In turn, our CIO reports to our Chief Executive Officer. The Information Security Council provides additional oversight for assessing and managing cybersecurity risk.

Our Director of Global Cybersecurity has over 15 years of cybersecurity and information technology experience, including as Director of Cybersecurity for various institutions. Our Director of Global Cybersecurity has a Bachelor of Science in Information Science and Technology and a master’s degree in information sciences, cybersecurity and information assurance, and he has a Certified Information Systems Security Professional certification, a GIAC Information Security Professional certification and a CompTIA Network+ ce certification. Our CIO has over 25 years of cybersecurity and information technology experience, including serving in the information technology function at Cummins Inc., where she served as the information technology leader in Cummins Filtration Inc., and as a programmer, analyst and information technology architect. Our CIO holds an undergraduate degree in business administration with emphasis in management information systems. Our Chief Financial Officer, Chief Technical Officer, Chief Legal Officer, VP of Vice President of Strategy and Director of Internal Audit & Enterprise Risk Management each have relevant educational and industry experience, including managing risks at our Company and at similar companies, including risks arising from cybersecurity threats.

Item 2. Properties

Our corporate headquarters are located in Nashville, Tennessee. We also have 11 distribution centers (as of December 31, 2023), four of which are currently shared with Cummins while we transition to standalone sites. We also have global administrative, engineering and research facilities around the world, including in the United States, China and India. Our manufacturing and distribution activities are located throughout the world and we consider our properties to be suitable for their present purposes, well-maintained and in good operating condition. In 2023, we moved each of our technical facilities in Wuhan, China and Pune, India to new locations with expanded square footage and opened a new manufacturing facility in Mado, South Korea.

Our headquarters and principal facilities are as follows:

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Facility Type	U.S. Facilities	Facilities Outside the U.S.
Headquarters	Tennessee:   Nashville (30,500 square feet), leased.
Manufacturing	Wisconsin:   Neillsville (166,000 square feet), owned.	Australia:   Kilsyth (129,000 square feet), leased. Brazil:   São Paulo (76,000 square feet), leased. China:   Shanghai (109,000 square feet), leased. Mexico:   San Luis Potosi (472,000 square feet), leased. South Africa:   Johannesburg (30,200 square feet), leased. South Korea:   Mado (95,000 square feet), leased (under development); Suwon (64,000 square feet), owned.

Facility Type	U.S. Facilities	Facilities Outside the U.S.
Technology	Wisconsin:   Stoughton (59,000 square feet), leased.	China:   Wuhan (23,000 square feet), leased. India:   Pune (20,500 square feet), leased.
Manufacturing and technology	Tennessee:   Cookeville (385,000 square feet), leased.	France:   Quimper (98,000 square feet), owned.

Item 3. Legal Proceedings

The matters described under Legal Proceedings in Note 14, Commitments and Contingencies to the Consolidated Financial Statements are incorporated herein by reference.

Item 4. Mine Safety Disclosures

Not applicable.

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PART II

Item 5. Market for Registrant’s Common Equity, Related Shareholder Matters and Issuer Purchases of Equity Securities

The Company’s common stock is traded on the New York Stock Exchange under the symbol “ATMU.” As of February 9, 2024, there were 2 registered shareholders of common stock. This does not include the number of persons whose stock is in nominee or “street” name accounts through brokers.

We have not yet determined whether or the extent to which we will pay any dividends on our common stock. The declaration, amount and payment of any future dividends will be at the discretion of our board of directors in accordance with applicable law. Our board of directors may take into account general economic and business conditions, our financial condition and operating results, our available cash and current and anticipated cash needs, capital requirements, contractual, legal, tax and regulatory restrictions and implications on the payment of dividends by us to our stockholders or by our subsidiaries to us, and such other factors as our board of directors may deem relevant. Our ability to pay dividends will depend on our ongoing ability to generate cash from operations and on our access to the capital markets. We cannot guarantee that we will pay a dividend in the future or continue to pay dividends if we commence paying dividends.

We did not sell any equity securities during 2023 in offerings that were not registered under the Securities Act.

We did not purchase any shares of our common stock during the three months ended December 31, 2023.

Comparison of Cumulative Total Return

The following graph compares the cumulative total return on our common stock with the cumulative total return to the S&P 500 Index and S&P 500 Industrial Index. The graph assumes, in each case, that an initial investment of $100 is made as of May 26, 2023, our first day of trading. The cumulative total return reflects market prices at the end of each quarter post May 26, 2023.

Item 6. Reserved

Reserved.

Item 7. Management’s Discussion and Analysis of Financial Condition and Results of Operations

The discussion and analysis presented below provides information which management believes is relevant to an assessment and understanding of Atmus Filtration Technologies Inc. (the “Company,” “Atmus,” “we,” “our” and “us”) consolidated results of operations and financial condition. The discussion should be read in

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conjunction with Atmus’ consolidated financial statements and notes thereto included elsewhere in this Annual Report on Form 10-K. This discussion contains forward-looking statements and involves numerous risks and uncertainties, including, but not limited to, those described under the heading “Risk Factors.” Actual results may differ materially from those contained in any forward-looking statements. Unless the context otherwise requires, references in this “Management’s Discussion and Analysis of Financial Condition and Results of Operations” to “Atmus” is intended to mean the business and operations of Atmus Filtration Technologies Inc. and its consolidated subsidiaries.

The following is the discussion and analysis of changes in the financial condition and results of operations for the year ended December 31, 2023 compared to the year ended December 31, 2022 and the year ended December 31, 2022 compared to the year ended December 31, 2021.

Cautionary Note Regarding Forward-Looking Statements

This Annual Report on Form 10-K contains forward-looking statements within the meaning of the safe harbor provisions of the United States Private Securities Litigation Reform Act of 1995, including, without limitation, those that are based on current expectations, estimates and projections about the industries in which we operate and management’s views, plans, objectives, projections, beliefs and assumptions. Forward-looking statements may be identified by the use of words such as “anticipates,” “expects,” “forecasts,” “intends,” “plans,” “believes,” “seeks,” “estimates,” “could,” “should,” “may” or words of similar meaning. Examples of forward-looking statements include, but are not limited to, statements we make regarding the outlook for our future business and financial performance, discussions of future operations, impact of planned acquisitions and dispositions, our strategy for growth, product development activities, regulatory approvals, market position, expenditures and the effects of the Separation and IPO (each as defined in Note 1, Description of the Business, to our Consolidated Financial Statements included herein). These statements are not guarantees of future performance and involve certain risks, uncertainties and assumptions, which we refer to as “future factors,” which are difficult to predict. If the underlying assumptions prove correct, or known or unknown risks or uncertainties materialize, our actual outcomes, results and financial condition may differ materially from what is expressed, implied or forecasted in such forward-looking statements. Risks and uncertainties include, but are not limited to:

•Significant customer concentration among Cummins, PACCAR, and the Traton Group;

•The loss of a top OEM relationship, or changes in the preferences of Atmus' aftermarket end-users;

•Atmus deriving significant earnings from investees that Atmus does not directly control;

•Significant competition in the markets Atmus serves;

•Evolving customer needs and developing technologies;

•Reliance on Atmus’ executive leadership and other key personnel;

•Strategic transactions, such as acquisitions, divestitures, and joint ventures;

•Management of productivity improvements;

•Work stoppages and other labor matters;

•Variability in material and commodity costs;

•Raw material, transportation and labor price increases and supply shortages;

•Complexity of supply chain and manufacturing;

•Atmus’ customers operating in cyclical industries and the current economic conditions in these industries;

•Exposure to potential claims related to warranties and claims for support outside of standard warranty obligations;

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•Products being subject to recall for performance or safety-related issues;

•Inability or failure to adequately protect and enforce Atmus’ intellectual property rights and the cost of protecting or enforcing Atmus' intellectual property rights;

•Ineffective internal control over financial reporting;

•Unexpected events, including natural disasters;

•Sales of counterfeit versions of products, as well as unauthorized sales of products;

•Statutory and regulatory requirements that can significantly increase costs;

•Changes in international, national and regional trade laws, regulations and policies affecting international trade;

•Unanticipated changes in Atmus' effective tax rate, the adoption of new tax legislation or exposure to additional income tax liabilities, as well as audits by tax authorities resulting in additional tax payments for prior periods;

•Changes in tax law relating to multinational corporations;

•Significant compliance costs and reputational and legal risks imposed by Atmus' global operations and the laws and regulations to which these are subject;

•Effects of climate change may cause Atmus to incur increased costs;

•Operations being subject to increasingly stringent environmental laws and regulations as well as to laws requiring cleanup of contaminated property;

•Potential system or data security breaches or other disruptions;

•Dependence on information technology infrastructure and assets that are increasing in complexity;

•Foreign currency exchange rate;

•Potential economic downturns that could cause the balances of recorded goodwill to decrease;

•Political, economic, and social uncertainty in geographies where Atmus has significant operations or large offerings of products;

•Uncertain worldwide and regional market and economic conditions;

•The loss of Cummins’ reputation, economies of scale, capital base and other resources as a result of the Separation from Cummins;

•Potential failure of performance by Atmus or Cummins under transaction agreements executed as part of the Separation;

•Actual or potential conflicts of interests for certain of Atmus' executive officers and directors because of their equity interests in Cummins;

•Limited liability to Atmus from Cummins and its directors for breach of fiduciary duty;

•Potential indemnification liabilities to Cummins pursuant to the separation agreement;

•Changes in capital and credit markets;

•Substantial indebtedness consisting of Atmus’ term loan and revolving credit facility, which may impact Atmus' ability to service all its indebtedness and react to changes in the industry; and

•Substantially all Atmus' assets being pledged as security for its term loan and revolving credit facility.

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Additional information about these future factors and the material factors or assumptions underlying such forward-looking statements may be found under the section entitled Risk Factors in this Annual Report on Form 10-K. It is not possible to predict or identify all such factors, and the risks described above should not be considered a complete statement of all potential risks and uncertainties. Readers are urged to consider these factors carefully in evaluating forward-looking statements and are cautioned not to place undue reliance on forward-looking statements. The forward-looking statements made herein are made only as of the date hereof and we undertake no obligation to publicly update or to revise any forward-looking statement, whether as a result of new information, future developments or otherwise, except as may be required by law.

General Overview

Company Overview

We are 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. We design and manufacture advanced filtration products, principally under the Fleetguard brand, that provide superior asset protection and enable lower emissions. We estimate that approximately 19% of our net sales in 2023 were generated through first-fit sales to OEMs, where our products are installed as components for new vehicles and equipment. We estimate that approximately 81% of our net sales in 2023 were generated in the aftermarket, where our products are installed as replacement or repair parts, leading to a strong recurring revenue base. Building on our more than 65-year history, we continue to grow and differentiate ourselves through our global footprint, comprehensive offering of premium products, technology leadership and multi-channel path to market.

Separation from Cummins

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”). We were incorporated in Delaware on April 1, 2022, as a wholly-owned subsidiary of Cummins, in anticipation of the Separation, and prior to the completion of our initial public offering (the “IPO”), Cummins completed, in all material respects, the transfer of the assets and liabilities of the Filtration Business to us and our subsidiaries.

Our Registration Statement on Form S-1, as amended, filed on May 16, 2023, was declared effective on May 25, 2023, and our 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 Cummins’ exchange of 16,243,070 shares of our common stock, including the underwriters’ full exercise of their option to purchase 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, and continues to own, approximately 80.5% of the outstanding shares of our common stock.

On September 30, 2022, and as amended on February 15, 2023, Atmus entered into a $1.0 billion credit agreement (“Credit Agreement”) with Cummins and 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. Upon completion of the IPO, we 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.

In connection with the Separation, we entered into various agreements with Cummins, including a separation agreement. In the separation agreement, there were certain assets and liabilities identified in the schedules which were retained by Cummins, and those that were transferred to the Company. These agreements comprehensively provide a framework for our relationship with Cummins and govern various interim and ongoing relationships between us and Cummins post IPO.

Basis of Presentation

For the periods prior to the IPO, the discussion below relates to the financial position and results of operations of a combination of entities under common control that have been “carved out” of Cummins’ historical consolidated financial statements and accounting records. The historical combined financial statements reflect our historical financial position, results of operations and cash flows, in conformity with generally accepted accounting principles in the United States of America (“U.S. GAAP”).

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For the period subsequent to May 26, 2023, as a standalone public company, we present our financial statements on a consolidated basis. The Consolidated Financial Statements have been prepared in conformity with U.S. GAAP. Refer to Note 2, Basis of Presentation, to the Consolidated Financial Statements included elsewhere in this report for additional information.

Factors Affecting Our Performance

Our financial performance depends, in large part, on varying conditions in the markets we serve. Demand in these markets tends to fluctuate in response to overall economic conditions. Our revenues may also be impacted by OEM inventory levels, production schedules, commodity prices, work stoppages and supply chain challenges. Economic downturns in markets we serve generally result in reduced sales of our products and can result in price reductions in certain products and/or markets. As a worldwide business, our operations are also affected by currency exchange rate changes, political and economic uncertainty, public health crises (epidemics or pandemics) and regulatory matters, including adoption and enforcement of environmental and emission standards in the countries we serve. Some of the more important factors affecting our performance are briefly discussed below.

Market demand

Aftermarket demand softened over the second half of 2023 while first-fit demand remained resilient. We have continued to increase prices as a result of significant increases in our cost base, which has contributed to higher net sales in the year ended December 31, 2023. In 2024, we expect first-fit demand to soften across many of our key markets whereas the aftermarket is expected to recover, particularly in the second half of 2024.

Supply chain constraints

We continue to experience supply chain disruptions, incremental costs and related challenges that unfavorably affect customer demand, its ability to meet customer demand and its production. While overall supply chain conditions have substantially improved from a year ago, they continue to affect inventory and backlog levels throughout our supply chain. Our management team continues to monitor and evaluate all of these factors and the related impacts on our business and operations and we are diligently working to minimize any supply chain impacts to our business and to our customers.

Commodity prices, labor, inflation and foreign currency exchange rates

We continue to experience generally high inflation, though it has moderated in the second half of 2023. Direct material cost pressures, driven largely by steel, resin and other petrochemical products, have stabilized, but we continue to see impacts from labor and energy. Collectively, we realized lower material and freight costs which have driven a decrease in Cost of sales in 2023 and more than offset increases in other costs. To further mitigate these pressures, we instituted pricing actions throughout 2023.

During 2023, our Selling, general and administrative expenses increased as a result of costs related to the Separation, inefficiencies due to delays in the execution of our IPO and increased variable compensation costs.

Additionally, the appreciation of the U.S. dollar against foreign currencies has had and could continue to have a negative impact on our consolidated results of operations due to translation impacts. Although we did see a slightly favorable impact on our results of operations in the second half of 2023, there can be no assurances that the overall negative impact will not continue in 2024.

Standalone costs

We have incurred, and expect to continue to incur, additional costs associated with becoming a standalone public company. During the year ended December 31, 2023, we incurred approximately $28.6 million of expenses, including $10.8 million within Cost of sales and $17.3 million within Selling, general and administrative expenses in connection with becoming a standalone public company. We expect to incur additional expenses of approximately $5 million to $15 million in 2024 in connection with becoming a standalone public company. In addition, we expect to incur capital expenditures in connection with the Separation of approximately $10 million to $20 million in 2024. These expenses and capital expenditures primarily relate to the establishment of functions previously co-mingled with Cummins, such as information technologies, distribution centers and human resources. Theses expenses and capital expenditures are

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expected to be substantially complete by the end of 2024 but some expenses and capital expenditures may potentially be incurred in 2025. The actual amount of the expenses and capital expenditures we will incur as a stand-alone public company may be higher, perhaps significantly, from our current estimates for a number of reasons, including, among others, the final terms we are able to negotiate with service providers, as well as additional costs we may incur that we have not currently anticipated. Additionally, the actual timing of when we incur these incremental expenses may be different, perhaps significantly, from our current estimates for a number of reasons, including, among others, unforeseen events that may cause delays or interruptions in our plans or our service providers’ ability to provide their services.

Results of Operations

Operating results were as follows (in millions, except per share amounts):

	Years Ended December 31,						Favorable (Unfavorable) 2023 vs. 2022				Favorable (Unfavorable) 2022 vs. 2021
	2023		2022		2021		Amount		%		Amount		%
	(in millions)
NET SALES	$	1,628.1	$	1,562.1	$	1,438.8	$	66.0	4.2	%	$	123.3	8.6	%
Cost of sales	1,195.4		1,202.9		1,089.5		7.5		0.6	%	(113.4)		(10.4)	%
GROSS MARGIN	432.7		359.2		349.3		73.5		20.5	%	9.9		2.8	%
OPERATING EXPENSES AND INCOME
Selling, general and administrative expenses	174.7		139.7		126.2		(35.0)		(25.1)	%	(13.5)		(10.7)	%
Research, development and engineering expenses	42.5		38.6		42.0		(3.9)		(10.1)	%	3.4		8.1	%
Equity, royalty and interest income from investees	33.6		28.0		32.4		5.6		20.0	%	(4.4)		(13.6)	%
Other operating expense, net	0.7		5.0		—		4.3		86.0	%	(5.0)		—	%
OPERATING INCOME	248.4		203.9		213.5		44.5		21.8	%	(9.6)		(4.5)	%
Interest expense	25.8		0.7		0.8		(25.1)		(3585.7)	%	0.1		12.5	%
Other income, net	3.8		8.8		3.9		(5.0)		(56.8)	%	4.9		125.6	%
INCOME BEFORE INCOME TAXES	226.4		212.0		216.6		14.4		6.8	%	(4.6)		(2.1)	%
Income tax expense	55.1		41.6		46.5		(13.5)		(32.5)	%	4.9		10.5	%
NET INCOME	$	171.3	$	170.4	$	170.1	$	0.9	0.5	%	$	0.3	0.2	%
PER SHARE DATA:
Basic earnings per share	$	2.06	$	2.05	$	2.04	$	0.01	0.5	%	$	0.01	0.5	%
Diluted earnings per share	$	2.05	$	2.05	$	2.04	$	—	—	%	$	0.01	0.5	%

	Years Ended December 31,			Favorable (Unfavorable) 2023 vs. 2022	Favorable (Unfavorable) 2022 vs. 2021
Percent of Net sales	2023	2022	2021	Percentage Points	Percentage Points
Gross margin	26.6%	23.0%	24.3%	3.6%	(1.3)%
Selling, general and administrative expenses	10.7%	8.9%	8.8%	(1.8)%	(0.1)%
Research, development and engineering expenses	2.6%	2.5%	2.9%	(0.1)%	0.4%

2023 vs. 2022

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Net Sales

Net sales were $1,628.1 million (which included related party sales of $390.8 million) for the year ended December 31, 2023, an increase of $66.0 million compared to $1,562.1 million (which included related party sales of $344.9 million) for the year ended December 31, 2022. Of the total Net sales increase of $66.0 million, $20.1 million was an increase in external sales and $45.9 million was an increase in related party sales. Additionally, sales increased by approximately $102.0 million due to increased pricing, partially offset by lower volumes of $34.2 million and the negative impacts of currency of $1.8 million.

Gross Margin

Gross margin was $432.7 million for the year ended December 31, 2023, an increase of $73.5 million compared to $359.2 million for the year ended December 31, 2022. The increase in Gross margin was mainly due to approximately $102.0 million of favorable pricing as described above and approximately $41.0 million of favorable freight and commodities costs, partially offset by $32.1 million of unfavorable manufacturing and other costs, $11.9 million due to lower volumes, $11.1 million of increased variable compensation costs, $9.2 million of one-time separation costs, and $5.2 million of unfavorable currency impacts. Gross margin as a percentage of Net sales was 26.6% for the year ended December 31, 2023, an increase of 3.6% compared to 23.0% for the year ended December 31, 2022. The increase in Gross margin as a percentage of Net sales was primarily due to items noted above.

Selling, General and Administrative Expenses

Selling, general and administrative expenses were $174.7 million for the year ended December 31, 2023, an increase of $35.0 million compared to $139.7 million for the year ended December 31, 2022. The increase was primarily driven by $13.5 million of increased variable compensation costs, $9.8 million of one-time separation costs, $6.3 million of higher executive and incentive based compensation and $5.4 million of higher merit and other costs. Selling, general and administrative expenses as a percentage of Net sales were 10.7% for the year ended December 31, 2023, an increase of 1.8% compared to 8.9% for the year ended December 31, 2022. The increase in Selling, general and administrative expenses as a percentage of Net sales was primarily driven by the items noted above increasing at a higher rate in relation to the increase in Net sales.

Research, Development and Engineering Expenses

Research, development and engineering expenses were $42.5 million for the year ended December 31, 2023, an increase of $3.9 million compared to $38.6 million for the year ended December 31, 2022. The increase was primarily due to increased variable compensation costs. Research, development and engineering expenses as a percentage of Net sales were 2.6% for the year ended December 31, 2023, an increase of 0.1% compared to 2.5% for the year ended December 31, 2022. The increase in Research, development and engineering expenses as a percentage of Net sales was mainly due to the items noted above.

Equity, Royalty and Interest Income From Investees

Equity, royalty and interest income from investees were $33.6 million for the year ended December 31, 2023, an increase of $5.6 million compared to $28.0 million for the year ended December 31, 2022. The increase was primarily due to higher earnings of $4.9 million from our joint ventures in China and India.

Other Operating Expense, Net

Other operating expense, net was $0.7 million for the year ended December 31, 2023, a decrease of $4.3 million compared to $5.0 million for the year ended December 31, 2022. The decrease was primarily due to prior year asset write-offs related to a discontinued program and the establishment of reserves against accounts receivable from Russian customers in 2022 that did not recur.

Interest Expense

Interest expense was $25.8 million for the year ended December 31, 2023, an increase of $25.1 million compared to $0.7 million for the year ended December 31, 2022. The increase was primarily due to the interest on our borrowings under the Credit Agreement in 2023.

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Other Income, Net

Other income, net was $3.8 million for the year ended December 31, 2023, a decrease of $5.0 million compared to $8.8 million for the year ended December 31, 2022. The decrease in Other income, net was primarily due to the net loss on foreign exchange rate hedging, partially offset by higher interest income as a result of cash balances held in interest-bearing accounts which we did not have prior to IPO.

Income Tax Expense

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.

Our effective tax rate for the year ended December 31, 2023 was 24.3%, an increase of 4.7% compared to 19.6% for the year ended December 31, 2022. The increase in the effective tax rate was driven by a change in the mix of earnings among tax jurisdictions and changes in discrete tax items. Our 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.

2022 vs. 2021

Net Sales

Net sales were $1,562.1 million (which included related party sales of $344.9 million) for 2022, an increase of $123.3 million compared to $1,438.8 million (which included related party sales of $328.6 million) for 2021. Of the total net sales increase of $123.3 million, consisting of $107.0 million in increased external sales and $16.3 million in increased related party sales, approximately $115.9 million was due to increased pricing for OEM and aftermarket products across all major regions we serve due to higher inflationary costs. The unfavorable impacts of foreign currency movements (approximately $37.8 million) were more than offset by increased volume.

Gross Margin

Gross margin was $359.2 million for 2022, an increase of $9.9 million compared to $349.3 million for 2021. The increase in Gross margin was mainly due to favorable pricing as described above (approximately $115.9 million) and higher sales volumes, largely offset by increased material costs (approximately $71.6 million), increased supply chain and freight costs (approximately $33.4 million) and the unfavorable impact of changes in foreign exchange rates on cost of sales (approximately $15.0 million). Gross margin as a percentage of Net sales was approximately 23.0% for 2022, a decrease of 1.3 percentage points compared to 24.3% for 2021. The decrease in Gross margin as a percentage of Net sales was primarily due to the high inflationary costs impacting material costs and increased freight costs due to supply chain constraints, which increased at a faster rate than the increase in Net sales.

Selling, General and Administrative Expenses

Selling, general and administrative expenses were $139.7 million for 2022, an increase of $13.5 million compared to $126.2 million for 2021, primarily due to increased costs related to the Separation, partially offset by lower variable compensation. Selling, general and administrative expenses as a percentage of Net sales was 8.9% for 2022, an increase of 0.1 percentage points compared to 8.8% in 2021. The increase in Selling, general and administrative expenses as a percentage of Net sales is primarily driven by the costs related to separation being higher compared to the increase in Net sales.

Research, Development and Engineering Expenses

Research, development and engineering expenses were $38.6 million for 2022, a decrease of $3.4 million compared to $42.0 million in 2021, primarily due to lower corporate allocations of $7.4 million in 2022 compared to $8.9 million in 2021. Research, development and engineering expenses as a percentage of Net sales was 2.5% for 2022, a decrease of 0.4 percentage points compared to 2.9% for 2021. The decrease in Research,

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development and engineering expenses was mainly due to Net sales increasing at a higher rate than the increase in Research, development and engineering expenses and lower corporate allocations.

Equity, Royalty and Interest Income From Investees

Equity, royalty and interest income from investees were $28.0 million, a decrease of $4.4 million compared to $32.4 million for 2021, primarily due to lower earnings from our joint venture in China as a result of the COVID-19 response and declining economic conditions, as well as reduced demand in China.

Other Operating (Income) Expense, Net

Other operating (income) expense, net was $5.0 million for 2022, an increase of $5.0 million compared to zero for 2021. The increase was primarily due to asset write-offs, partially offset by gains on asset sales.

Other Income, Net

Other income, net was $8.8 million for 2022, an increase of $4.9 million compared to $3.9 million for 2021. The increase in Other income, net was primarily due to an increase in the non-service benefit of our defined benefit pension plans as compared to 2021.

Income Tax Expense

Our effective tax rate for 2022 was 19.6%, a decrease of 1.9 percentage points compared to 21.5% for 2021.

The year ended December 31, 2022 contained unfavorable discrete tax items of $5.4 million, primarily due to $5.2 million of unfavorable changes in tax reserves.

The year ended December 31, 2021 contained unfavorable net discrete tax items of $2.6 million, primarily due to $3.5 million of unfavorable changes in tax reserves, partially offset by $0.9 million of favorable other discrete tax items.

Liquidity and Capital Resources

Our facilities under the Credit Agreement provide for $1.0 billion in total availability, which includes the $600 million term loan and the $400 million revolving credit facility. As of December 31, 2023, we have borrowed $600 million on the term loan and zero on the revolving credit facility. As a result, we had capacity under our revolving credit facility of $400 million as of December 31, 2023.

We believe that cash from operations and the facilities under our Credit Agreement will continue to provide sufficient liquidity for our working capital needs, planned capital expenditures and future payments of our contractual, tax and benefit plan obligations in both the short and long term. Overall, we do not expect negative effects to our funding sources that would have a material effect on our liquidity. However, if a serious economic or credit market crisis ensues or other adverse developments arise, it could have a material adverse effect on our liquidity, financial condition, results of operations and cash flows.

Our most significant ongoing short-term cash requirements relate primarily to funding operations (including expenditures for raw materials, labor, manufacturing and distribution, trade and promotions, advertising and marketing, tax liabilities, benefit plan obligations and lease expenses) as well as periodic expenditures for anticipated capital investments, interest payments on our long-term debt and supporting any future acquisitions.

Long-term cash requirements primarily relate to funding long-term debt repayments and our long-term benefit plan obligations.

Cash Flow

Our management reviews our liquidity needs in determining any and all indebtedness options. We have the ability to access the capital markets following the IPO, and we continue to generate substantial cash from operating activities and believe that our operating cash flow and other sources of liquidity will be sufficient to

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allow us to manage our business and give us flexibility to meet our short- and long-term financial commitments. Our cash flow activity is noted below:

	For the Years Ended December 31,
	2023	2022	2021
	(in millions)
Net cash provided by operating activities	189.0	165.7	209.9
Net cash used in investing activities	(45.8)	(37.5)	(33.4)
Net cash provided by (used in) financing activities	24.8	(128.2)	(176.5)

Operating Cash Flow

Net cash provided by operating activities was $189.0 million for the year ended December 31, 2023, an increase of $23.3 million compared to Net cash provided by operating activities of $165.7 million for the year ended December 31, 2022. The increase was driven primarily by lower working capital requirements of $26.1 million and a favorable change in other liabilities of $6.0 million, partially offset by an unfavorable change in income from equity method investees of $8.2 million. During the year ended December 31, 2023, lower working capital requirements resulted in a cash inflow of $11.3 million compared to a cash outflow of $14.8 million for the year ended December 31, 2022, mainly due to higher other accrued expenses, higher trade accounts payable, lower trade and related party receivables and lower inventories, partially offset by lower related party payables.

Net cash provided by operating activities was $165.7 million in 2022, a decrease of $44.2 million compared to $209.9 million in 2021. The overall decrease was driven primarily by higher working capital requirements of $41.9 million and an increase in deferred taxes of $10.0 million, partially offset by favorable changes in other assets and pension liabilities of $9.4 million. The higher working capital requirements were driven by lower related party payables and lower other accrued expenses, partially offset by lower inventories.

Dividends received from our unconsolidated equity investees were $19.8 million and $23.1 million for the years ended December 31, 2023 and December 31, 2022, respectively. Dividends are typically paid in the second through the fourth quarters and are included in Net cash provided by operating activities.

Investing Cash Flow

Net cash used in investing activities for each fiscal year presented was primarily used for capital expenditures. Our capital expenditures were $45.8 million (of which approximately $9.2 million related to one-time separation costs), $37.5 million and $33.4 million for the years ended December 31, 2023, December 31, 2022,and December 31, 2021, respectively, corresponding to approximately 2.8%, 2.4% and 2.3% of Net sales in 2023, 2022 and 2021, respectively.

Financing Cash Flow

Net cash provided by financing activities for the year ended December 31, 2023 consisted primarily of long-term debt proceeds from our borrowings of $650 million under our Credit Agreement, partially offset by net transfers of $579.5 million to Cummins as part of the Separation and $50.0 million in payments made on our revolving credit facility. Net cash used in financing activities for the years ended December 31, 2022 and December 31, 2021 consisted entirely of transfers to Cummins.

Contractual Obligations

Our commitments consist of lease obligations for real estate and equipment. For more information regarding our lease obligations, see Note 9, Leases, to the Consolidated Financial Statements, which provides a summary of our future minimum lease payments.

Debt

Our total debt outstanding was $600 million at December 31, 2023. We had no debt outstanding at either December 31, 2022 or December 31, 2021. At December 31, 2023, the weighted-average term of our

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outstanding long-term debt was 3.8 years. Refer to Note 12, Debt and Borrowing Arrangements, to the Consolidated Financial Statements for more information on our debt and debt covenants.

Non-GAAP Measures

We use non-GAAP financial information and believe it is useful to investors as it provides additional information to facilitate comparisons of historical operating results, identify trends in our underlying operating results and provide additional insight and transparency on how we evaluate our business. We use non-GAAP financial measures to budget, make operating and strategic decisions and evaluate our performance. We have detailed the non-GAAP adjustments that we make in our non-GAAP definitions below. We believe the non-GAAP measures should always be considered along with the related U.S. GAAP financial measures. We have provided the reconciliations between the U.S. GAAP and non-GAAP financial measures below, and we also discuss our underlying U.S. GAAP results throughout our Management’s Discussion and Analysis of Financial Condition and Results of Operations in this Annual Report on Form 10-K.

Our primary non-GAAP financial measures are listed below and reflect how we evaluate our current and prior-year operating results. As new events or circumstances arise, these definitions could change. When our definitions change, we provide the updated definitions and present the related non-GAAP historical results on a comparable basis.

•“EBITDA” is defined as earnings or losses before interest expense, income taxes, depreciation and amortization and “EBITDA margin” is defined as EBITDA as a percent of Net sales. We believe EBITDA and EBITDA margin are useful measures of our operating performance as they assist investors and debt holders in comparing our performance on a consistent basis without regard to financing methods, capital structure, income taxes or depreciation and amortization methods, which can vary significantly depending upon many factors. Additionally, we believe these metrics are widely used by investors, securities analysts, ratings agencies and others in our industry in evaluating performance.

•“Adjusted EBITDA” is defined as EBITDA after adding back certain one-time expenses, reflected in Cost of sales and Selling, general and administrative expenses, including costs associated with becoming a standalone public company and “Adjusted EBITDA margin” is defined as Adjusted EBITDA as a percent of Net sales. We believe Adjusted EBITDA and Adjusted EBITDA margin are useful measures of our operating performance as it allows investors and debt holders to compare our performance on a consistent basis without regard to one-time costs attributable to our becoming a standalone public company.

•“Adjusted earnings per share” is defined as diluted earnings per share (the most comparable U.S. GAAP financial measure) after adding back certain one-time expenses, reflected in Cost of sales and Selling, general and administrative expenses, including costs associated with becoming a standalone public company less the related tax impact of the same one-time expenses. We believe Adjusted earnings per share provides improved comparability of underlying operating results.

•“Free cash flow” is defined as cash flows provided by (used for) operating activities less capital expenditures and “Adjusted free cash flow” is defined as Free cash flow after adding back certain one-time capital expenditures including costs associated with becoming a standalone public company. We believe Free cash flow and Adjusted free cash flow are useful metrics used by management and investors to analyze our ability to service and repay debt and return value to shareholders.

The metrics defined above are not in accordance with, or alternatives for, U.S. GAAP financial measures and may not be consistent with measures used by other companies. The metrics should be considered supplemental data; however, the amounts included in the EBITDA, EBITDA margin, Adjusted EBITDA, Adjusted EBITDA margin, Adjusted earnings per share, Free cash flow and Adjusted free cash flow calculations are derived from amounts included in the consolidated statements of net income and cash flows. We do not consider our non-GAAP financial measures as superior to, or a substitute for, the equivalent measures calculated and presented in accordance with GAAP. Some of the limitations are:

•such measures do not reflect our cash expenditures, or future requirements for capital expenditures or contractual commitments;

•such measures do not reflect changes in, or cash requirements for, our working capital needs;

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•such measures do not reflect the interest expense or the cash requirements necessary to service interest or principal payments on our debt;

•although depreciation and amortization are non-cash charges, the assets being depreciated and amortized will often have to be replaced in the future and such measures do not reflect any cash requirements for such replacements; and

•other companies in our industry may calculate such measures differently than we do, limiting their usefulness as comparative measures.

To properly and prudently evaluate our business, we encourage you to review the consolidated financial statements included elsewhere in this report and not rely on a single financial measure to evaluate our business.

A reconciliation of Net income to EBITDA and Adjusted EBITDA is shown in the table below:

	For the Years Ended December 31,
	2023			2022			2021
	(in millions)
NET INCOME	$	171.3		$	170.4		$	170.1
Plus:
Interest expense	25.8			0.7			0.8
Income tax expense	55.1			41.6			46.5
Depreciation and amortization	21.5			21.6			21.6
EBITDA (non-GAAP)	$	273.7		$	234.3		$	239.0
Plus:
One-time separation costs(a)	$	28.6		$	9.0		$	—
Adjusted EBITDA (non-GAAP)	$	302.3		$	243.3		$	239.0
Net sales	$	1,628.1		$	1,562.1		$	1,438.8
Net income margin	10.5		%	10.9		%	11.8		%
EBITDA margin (non-GAAP)	16.8		%	15.0		%	16.6		%
Adjusted EBITDA margin (non-GAAP)	18.6		%	15.6		%	16.6		%

(a)Primarily comprised of one-time expenses related to information technology, warehousing and human resources separation costs.

A reconciliation of Diluted earnings per share to Adjusted earnings per share is shown in the table below:

	For the Years Ended December 31,
	2023		2022		2021
	(per share)
Diluted earnings per share	$	2.05	$	2.05	$	2.04
Plus:
One-time separation costs(a)	$	0.34	$	0.11	$	—
Less:
Tax impact of one-time separation costs(a)	$	0.08	$	0.02	$	—
Adjusted earnings per share (non-GAAP)	$	2.31	$	2.13	$	2.04

(a)Primarily comprised of one-time expenses related to information technology, warehousing and human resources separation costs and the related tax impact of those expenses. The tax impact of one-time separation costs for the years ended December 31, 2023, 2022 and 2021 were $6.9 million, $1.8 million and zero, respectively.

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A reconciliation of Net cash provided by operating activities to Free cash flow and Adjusted free cash flow is shown in the table below:

	For the Years Ended December 31,
	2023		2022		2021
	(in millions)
Cash provided by operating activities	$	189.0	$	165.7	$	209.9
Less:
Capital expenditures	$	45.8	$	37.5	$	33.4
Free cash flow (non-GAAP)	$	143.2	$	128.2	$	176.5
Plus:
One-time separation capital expenditures	$	9.2	$	0.5	$	—
Adjusted free cash flow (non-GAAP)	$	152.4	$	128.7	$	176.5

Critical Accounting Policies and Estimates

We prepare our Consolidated Financial Statements in conformity with U.S. GAAP. The preparation of our financial statements requires the use of estimates, judgments and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and reported amounts of revenues and expenses during the periods presented. Actual results could differ from those estimates and assumptions. See Note 3, Summary of Significant Accounting Policies, in the notes accompanying Atmus’ financial statements included elsewhere herein for a summary of Atmus’ significant accounting policies, and discussion of recent accounting pronouncements. Atmus believes that the following discussion addresses Atmus’ most critical accounting policies, which are those that are most important to the portrayal of Atmus’ financial condition and results of operations and require management’s most difficult, subjective and complex judgments.

Revenue Recognition

We sell to customers either through long-term arrangements or standalone purchase orders. Our long-term arrangements generally do not include committed volumes until underlying purchase orders are issued. Typically, we recognize revenue on the products we sell at a point in time, in accordance with shipping terms or other contractual arrangements.

The transaction price of a contract could be reduced by variable consideration, including aftermarket rebates, volume and growth rebates and sales returns. At the time of sale to a customer, we record an estimate of variable consideration as a reduction from gross sales. We primarily rely on historical experience and anticipated future performance to estimate the variable consideration. Revenue is recognized to the extent that it is probable that a significant reversal of revenue will not occur when the contingency is resolved.

For aftermarket rebates and volume and growth rebates, management estimates are based on the terms of the arrangements with customers, historical payment experience, volume in quantity or mix of purchases of product during a specified time period and expectations for changes in relevant trends in the future. Adjustments to rebate accruals are made as actual usage becomes known in order to properly estimate the amounts necessary to generate consumer demand based on market conditions as of the balance sheet date.

For product returns, some aftermarket customers are permitted to return small amounts of parts and filters each year. An estimate of future returns is accounted for at the time of sale as a reduction in the overall sales revenue based on historical return rates.

Accounting for Income Taxes

We determine our income tax expense using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax effects of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. We recognize the tax impact of including certain foreign earnings in U.S. taxable income as a period cost. Future tax benefits of net operating loss and credit carryforwards are also recognized as deferred tax assets. We evaluate the

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recoverability of our deferred tax assets each quarter by assessing the likelihood of future profitability and available tax planning strategies that could be implemented to realize our net deferred tax assets. At December 31, 2023, we recorded net deferred tax assets of $12.8 million. The assets included $5.6 million for the value of net operating loss and credit carryforwards. A valuation allowance of $3.7 million was recorded to reduce the tax assets to the net value management believed was more likely than not to be realized. In the event our operating performance deteriorates, future assessments could conclude that a larger valuation allowance will be needed to further reduce the deferred tax assets.

In addition, we operate within multiple taxing jurisdictions and are subject to tax audits in these jurisdictions. These audits can involve complex issues, which may require an extended period of time to resolve. We accrue for the estimated additional tax and interest that may result from tax authorities disputing uncertain tax positions. We believe we made adequate provisions for income taxes for all years that are subject to audit based upon the latest information available. A more complete description of our income taxes and the future benefits of our net operating loss and credit carryforwards is disclosed in Note 6, “Income Taxes,” to our Consolidated Financial Statements included herein.

Item 7A. Quantitative and Qualitative Disclosures About Market Risk

Foreign Currency Exchange Risk

As a result of our international business presence, we are exposed to foreign currency exchange rate risks. We transact business in foreign currencies and, as a result, our income and financial condition are exposed to movements in foreign currency exchange rates. This risk is closely monitored and managed through the use of financial derivative instruments. Financial derivatives are used by Atmus expressly for hedging purposes and under no circumstances are they used for speculative purposes. Substantially all of Atmus’ derivative contracts are subject to master netting arrangements, which provide the option to settle certain contracts on a net basis when they settle on the same day with the same currency. In addition, these arrangements provide for a net settlement of all contracts with a given counterparty in the event that the arrangement is terminated due to the occurrence of default or a termination event.

To minimize the income volatility resulting from the remeasurement of net monetary assets and liabilities denominated in a currency other than the functional currency, Atmus enters into foreign currency forward contracts, which are considered economic hedges and are not designated as hedges for accounting purposes. The objective is to offset the gain or loss from remeasurement with the gain or loss from the fair market valuation of the forward contract.

The potential gain or loss in the fair value of our outstanding foreign currency contracts, assuming a hypothetical 10% fluctuation in the currencies of such contracts, would not have a material impact on the consolidated financial statements for the years ended December 31, 2023, 2022 and 2021. The sensitivity analysis of the effects of changes in foreign currency exchange rates assumes the notional value to remain constant for the next 12 months. The analysis ignores the impact of foreign exchange movements on our competitive position and potential changes in sales levels. Any change in the value of the contracts, real or hypothetical, would be significantly offset by an inverse change in the value of the underlying hedged items.

Interest Rate Risk

Our interest rate risk relates primarily to our $600 million term loan facility and our five-year $400 million revolving credit facility. Borrowings under these facilities 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 by us. Generally, U.S. dollar-denominated loans bear interest at an adjusted term 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 our net leverage ratio. Based on our outstanding borrowings at December 31, 2023, a 0.125% change in SOFR would have a $0.8 million annual impact on interest expense. Refer to Note 12, Debt and Borrowing Arrangements, to the Consolidated Financial Statements for further information.

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Item 8. Financial Statements and Supplementary Data

Index to Consolidated Financial Statements

	PAGE
Management’s Report to Shareholders	60
Report of PricewaterhouseCoopers LLP (PCAOB ID 238), Independent Registered Public Accounting Firm	61
Consolidated Statements of Net Income	63
Consolidated Statements of Comprehensive Income	64
Consolidated Balance Sheets	65
Consolidated Statements of Cash Flows	66
Consolidated Statements of Changes in Equity	67
Notes to the Financial Statements	68

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Management’s Report to Shareholders

Management’s Report on Internal Control over Financial Reporting

As a public company, we will be required to maintain internal control over financial reporting and to evaluate and determine the effectiveness of our internal control over financial reporting. This annual report does not include a report of management’s assessment regarding internal control over financial reporting or an attestation report of the company’s registered public accounting firm due to a transition period established by rules of the Securities and Exchange Commission for newly public companies. Beginning with our annual report on Form 10-K as of and for the year ending December 31, 2024, we will be required to provide a management report on internal control over financial reporting, as well as an attestation of our independent registered public accounting firm.

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Report of Independent Registered Public Accounting Firm

To the Board of Directors and Shareholders of Atmus Filtration Technologies Inc.

Opinion on the Financial Statements

We have audited the accompanying consolidated balance sheets of Atmus Filtration Technologies Inc. and its subsidiaries (the “Company”) as of December 31, 2023 and 2022, and the related consolidated statements of net income, of comprehensive income, of changes in equity and of cash flows for each of the three years in the period ended December 31, 2023, including the related notes (collectively referred to as the “consolidated financial statements”). In our opinion, the consolidated financial statements present fairly, in all material respects, the financial position of the Company as of December 31, 2023 and 2022, and the results of its operations and its cash flows for each of the three years in the period ended December 31, 2023 in conformity with accounting principles generally accepted in the United States of America.

Basis for Opinion

These consolidated financial statements are the responsibility of the Company’s management. Our responsibility is to express an opinion on the Company’s consolidated financial statements based on our audits. We are a public accounting firm registered with the Public Company Accounting Oversight Board (United States) (PCAOB) and are required to be independent with respect to the Company in accordance with the U.S. federal securities laws and the applicable rules and regulations of the Securities and Exchange Commission and the PCAOB.

We conducted our audits of these consolidated financial statements in accordance with the standards of the PCAOB. Those standards require that we plan and perform the audits to obtain reasonable assurance about whether the consolidated financial statements are free of material misstatement, whether due to error or fraud.

Our audits included performing procedures to assess the risks of material misstatement of the consolidated financial statements, whether due to error or fraud, and performing procedures that respond to those risks. Such procedures included examining, on a test basis, evidence regarding the amounts and disclosures in the consolidated financial statements. Our audits also included evaluating the accounting principles used and significant estimates made by management, as well as evaluating the overall presentation of the consolidated financial statements. We believe that our audits provide a reasonable basis for our opinion.

Critical Audit Matters

The critical audit matter communicated below is a matter arising from the current period audit of the consolidated financial statements that was communicated or required to be communicated to the audit committee and that (i) relates to accounts or disclosures that are material to the consolidated financial statements and (ii) involved our especially challenging, subjective, or complex judgments. The communication of critical audit matters does not alter in any way our opinion on the consolidated financial statements, taken as a whole, and we are not, by communicating the critical audit matter below, providing a separate opinion on the critical audit matter or on the accounts or disclosures to which it relates.

Revenue Recognition

As described in Note 3 to the consolidated financial statements, the Company sells to customers either through long-term arrangements or standalone purchase orders. The Company’s long-term arrangements generally do not include committed volumes until underlying purchase orders are issued. Typically, revenue is recognized on the products the Company sells at a point in time, in accordance with shipping terms or other contractual arrangements. For the year ended December 31, 2023, the Company’s net sales were $1,628.1 million.

The principal consideration for our determination that performing procedures relating to revenue recognition is a critical audit matter is the high degree of auditor effort in performing procedures related to the Company’s revenue recognition.

Addressing the matter involved performing procedures and evaluating audit evidence in connection with forming our overall opinion on the consolidated financial statements. These procedures included, among others

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(i) evaluating revenue recognized during the year for a sample of revenue transactions by obtaining and inspecting source documents, including purchase orders, invoices, shipping documentation, and subsequent cash receipts, where applicable and (ii) conforming a sample of outstanding customer invoice balances as of year-end and obtaining and inspecting source documents, including subsequent cash receipts or shipping documentation, for confirmations not returned.

/s/ PricewaterhouseCoopers LLP

Nashville, Tennessee

February 14, 2024

We have served as the Company’s auditor since 2021.

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ATMUS FILTRATION TECHNOLOGIES INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF NET INCOME

(in millions of U.S. dollars, except per share data)

	For the Years Ended December 31,
	2023		2022		2021
NET SALES(a)	$	1,628.1	$	1,562.1	$	1,438.8
Cost of sales	1,195.4		1,202.9		1,089.5
GROSS MARGIN	432.7		359.2		349.3
OPERATING EXPENSES AND INCOME
Selling, general and administrative expenses	174.7		139.7		126.2
Research, development and engineering expenses	42.5		38.6		42.0
Equity, royalty and interest income from investees	33.6		28.0		32.4
Other operating expense, net	0.7		5.0		—
OPERATING INCOME	248.4		203.9		213.5
Interest expense	25.8		0.7		0.8
Other income, net	3.8		8.8		3.9
INCOME BEFORE INCOME TAXES	226.4		212.0		216.6
Income tax expense	55.1		41.6		46.5
NET INCOME	$	171.3	$	170.4	$	170.1
PER SHARE DATA:
Weighted-average shares for basic EPS	83.3		83.3		83.3
Weighted-average shares for diluted EPS	83.4		83.3		83.3
Basic earnings per share	$	2.06	$	2.05	$	2.04
Diluted earnings per share	$	2.05	$	2.05	$	2.04

(a)Includes sales to related parties of $390.8 million, $344.9 million and $328.6 million for the years ended December 31, 2023, 2022 and 2021, respectively.

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ATMUS FILTRATION TECHNOLOGIES INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME

(in millions of U.S. dollars)

	For the Years Ended December 31,
	2023		2022		2021
NET INCOME	$	171.3	$	170.4	$	170.1
Other comprehensive loss, net of tax
Change in pension and other postretirement defined benefit plans	(1.0)		2.4		0.7
Foreign currency translation adjustments	0.6		(16.6)		(12.0)
Total other comprehensive loss, net of tax	$	(0.4)	$	(14.2)	$	(11.3)
COMPREHENSIVE INCOME	$	170.9	$	156.2	$	158.8

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ATMUS FILTRATION TECHNOLOGIES INC. AND SUBSIDIARIES

CONSOLIDATED BALANCE SHEETS

(in millions of U.S. dollars, except share data)

	December 31, 2023		December 31, 2022
ASSETS
Cash and cash equivalents	$	168.0	$	—
Accounts and notes receivable, net
Trade and other receivables	184.5		174.2
Related party receivables	62.3		61.8
Inventories	250.0		245.0
Prepaid expenses and other current assets	28.2		19.3
Total current assets	693.0		500.3
Property, plant and equipment, net	174.6		148.4
Investments and advances related to equity method investees	84.8		77.0
Goodwill	84.7		84.7
Other assets	51.5		57.0
TOTAL ASSETS	$	1,088.6	$	867.4
LIABILITIES
Accounts payable	$	174.2	$	145.9
Related party payables	62.4		82.0
Accrued compensation, benefits and retirement costs	41.8		18.2
Current portion of accrued product warranty	5.4		5.9
Current maturities of long-term debt	7.5		—
Other accrued expenses	83.7		79.0
Total current liabilities	375.0		331.0
Long-term debt	592.5		—
Accrued product warranty	8.6		9.6
Other liabilities	31.8		71.2
TOTAL LIABILITIES	1,007.9		411.8
Commitments and contingencies (Note 14)
EQUITY
Common stock, $0.0001 par value (2,000,000,000 shares authorized and 83,297,796 shares issued and outstanding as of December 31, 2023)	$	—	$	—
Net parent investment	—		511.4
Additional paid-in capital	49.7		—
Retained earnings	87.2		—
Accumulated other comprehensive loss	(56.2)		(55.8)
TOTAL EQUITY	80.7		455.6
TOTAL LIABILITIES AND EQUITY	$	1,088.6	$	867.4

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ATMUS FILTRATION TECHNOLOGIES INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CASH FLOWS

(in millions of U.S. dollars)

	For the Years Ended December,
	2023		2022		2021
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES
Net income	$	171.3	$	170.4	$	170.1
Adjustments to reconcile net income to operating cash flows:
Depreciation and amortization	21.5		21.6		21.6
Deferred income taxes	(10.0)		(12.7)		(2.7)
Equity in income of investees, net of dividends	(7.8)		0.4		(2.8)
Foreign currency remeasurement and transaction exposure	(4.5)		(1.9)		(5.8)
Changes in current assets and liabilities:
Trade and other receivables	(9.4)		(15.6)		0.2
Related party receivables	(0.7)		(2.7)		(8.0)
Inventories	(4.3)		(9.7)		(43.5)
Prepaid expenses and other current assets	(8.9)		(6.1)		10.2
Accounts payable	24.1		12.6		20.5
Related party payables	(19.7)		5.9		28.3
Other accrued expenses	30.2		0.8		19.4
Changes in other liabilities	0.3		(5.7)		3.4
Other, net	6.9		8.4		(1.0)
Net cash provided by operating activities	189.0		165.7		209.9
CASH USED IN INVESTING ACTIVITIES
Capital expenditures	(45.8)		(37.5)		(33.4)
Net cash used in investing activities	(45.8)		(37.5)		(33.4)
CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES
Long-term debt proceeds	650.0		—		—
Payments on long-term debt	(50.0)		—		—
Net transfers to Parent	(579.5)		(128.2)		(176.5)
Other, net	4.3		—		—
Net cash provided by (used in) financing activities	24.8		(128.2)		(176.5)
Net increase in cash and cash equivalents	168.0		—		—
Cash and cash equivalents at beginning of period	—		—		—
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$	168.0	$	—	$	—
SUPPLEMENTAL CASH FLOW INFORMATION:
Non-cash investing and financing activities:
Non-cash settlements with Parent	$	29.4	$	—	$	—
Non-cash Capital expenditures	$	(1.5)	$	(4.1)	$	(1.5)

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ATMUS FILTRATION TECHNOLOGIES INC. AND SUBSIDIARIES

CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY

(in millions of U.S. dollars)

	Common Stock		Net Parent Investment		Additional Paid-in Capital		Retained Earnings		Accumulated Other Comprehensive Loss		Total
Balance December 31, 2020	$	—	$	475.6	$	—	$	—	$	(30.3)	$	445.3
Net income	—		170.1		—		—		—		170.1
Other comprehensive loss, net of tax	—		—		—		—		(11.3)		(11.3)
Share-based awards	—		—		—		—		—		—
Net transfers to Parent	—		(176.5)		—		—		—		(176.5)
Balance December 31, 2021	$	—	$	469.2	$	—	$	—	$	(41.6)	$	427.6
Net income	$	—	$	170.4	$	—	$	—	$	—	$	170.4
Other comprehensive loss, net of tax	—		—		—		—		(14.2)		(14.2)
Share-based awards	—		—		—		—		—		—
Net transfers to Parent	—		(128.2)		—		—		—		(128.2)
Balance December 31, 2022	$	—	$	511.4	$	—	$	—	$	(55.8)	$	455.6
Net income	$	—	$	84.1	$	—	$	87.2	$	—	$	171.3
Other comprehensive loss, net of tax	—		—		—		—		(0.4)		(0.4)
Share-based awards	—		—		4.3		—		—		4.3
Net transfers (to) from Parent	—		(595.5)		45.4		—		—		(550.1)
Balance December 31, 2023	$	—	$	—	$	49.7	$	87.2	$	(56.2)	$	80.7

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ATMUS FILTRATION TECHNOLOGIES INC. AND SUBSIDIARIES

NOTES TO CONSOLIDATED FINANCIAL STATEMENTS

NOTE 1. DESCRIPTION OF THE BUSINESS

Atmus Filtration Technologies Inc. (“Atmus” or the “Company”) develops, designs, manufactures and sells filters, coolant and chemical products. Atmus offers products for first fit and aftermarket applications, including air filters, fuel filters, fuel water separators, lube filters, hydraulic filters, coolants, fuel additives and other filtration systems to original equipment manufacturers, dealers/distributors and end-users. Atmus supports a wide customer base in a diverse range of markets, including on-highway and off-highway segments such as oil and gas, agriculture, mining, construction, power generation, marine and industrial markets. The Company produces and sells globally recognized Fleetguard branded products in over 140 countries, including countries in North America, Europe, South America, Asia, Australia and Africa. Fleetguard branded products are available through distribution centers worldwide.

Separation

In April 2022, Cummins Inc. (“Cummins” or the “Parent”) announced its intention to separate its filtration business (the “Filtration Business”) into a standalone publicly traded company (the “Separation”). In preparation for 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.

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 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, and continues to own, approximately 80.5% of the outstanding shares of Atmus common stock.

Atmus Debt Agreement

On September 30, 2022, and as amended on February 15, 2023, Atmus entered into a $1.0 billion credit agreement (“Credit Agreement”) with Cummins and 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.

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.

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 consolidated 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 financial statements for all periods presented, including the historical results of the Company prior to May 26, 2023, are now referred to as “Consolidated Financial Statements”, and have been prepared in accordance with generally accepted accounting principles in the United States of America (GAAP). All intercompany balances and transactions are eliminated in consolidation.

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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 and the related corporate expenses 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. The aggregate costs allocated for these functions to the Filtration Business are included within the Consolidated Statements of Net Income for the periods presented prior to the Separation.

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 Consolidated Financial Statements.

For the Filtration Business, transactions with Cummins affiliates were included in the 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 Consolidated Financial Statements at the time the transactions were recorded.

As of the IPO Date

In connection with the Separation, we 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 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 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 continue to be provided by Cummins under a transition services agreement. The Company incurred certain costs in its establishment as a standalone public company and

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expects to incur ongoing additional costs associated with operating as an independent, publicly traded company.

As a standalone entity, the Company will file tax returns on its own behalf, and tax balances and effective income tax rates may differ from the amounts reported in the historical periods. Atmus currently files a consolidated Federal income tax return and returns in certain other jurisdictions with Cummins. Following a full separation from Cummins, Atmus will file tax returns in those jurisdictions on its own behalf.

Post IPO, Retained earnings began to accumulate and the balance reflected on the Consolidated Balance Sheets reflects earnings for the period May 26, 2023 through December 31, 2023.

NOTE 3. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES

Investments in Equity Investees

We use the equity method to account for our investments in joint ventures, affiliated companies and alliances in which we have the ability to exercise significant influence, generally represented by equity ownership or partnership equity of at least 20 percent but not more than 50 percent. Generally, under the equity method, original investments in these entities are recorded at cost and subsequently adjusted by our share of equity in income or losses after the date of acquisition. Equity in income or losses of each investee is recorded according to our level of ownership; if losses accumulate, we record our share of losses until our investment has been fully depleted. If our investment has been fully depleted, we recognize additional losses only when we are the primary funding source. We eliminate (to the extent of our ownership percentage) in our Consolidated Financial Statements the profit in inventory held by our equity method investees that has not yet been sold to a third-party. Dividends received from equity method investees reduce the amount of our investment when received and do not impact our earnings. Our investments are classified as “Investments and advances related to equity method investees” in our Consolidated Balance Sheets. Our share of the results from joint ventures, affiliated companies and alliances is reported in our Consolidated Statements of Net Income as “Equity, royalty and interest income from investees” and is reported net of all applicable income taxes. Our foreign equity investees are presented net of applicable foreign income taxes in our Consolidated Statements of Net Income. See Note 5, Investments in Equity Investees, for additional information.

Use of Estimates in the Preparation of the Consolidated Financial Statements

Preparation of financial statements requires management to make estimates and assumptions that affect reported amounts presented and disclosed in our Consolidated Financial Statements. Significant estimates and assumptions in these Consolidated Financial Statements require the exercise of judgement and are used for, but not limited to, estimates of future cash flows and other assumptions associated with goodwill and long-lived asset impairment tests, useful lives for depreciation and amortization, warranty programs, restructuring costs, income taxes, deferred tax valuation allowances, contingencies and allowances for doubtful accounts. Due to the inherent uncertainty involved in making estimates, actual results reported in future periods may be different from these estimates.

Revenue From Contracts with Customers

Revenue Recognition Sales of Products

We sell to customers either through long-term arrangements or standalone purchase orders. Our long-term arrangements generally do not include committed volumes until underlying purchase orders are issued. Typically, we recognize revenue on the products we sell at a point in time, in accordance with shipping terms or other contractual arrangements. All related shipping and handling costs are accrued at the time the related performance obligation has been satisfied.

Our sales arrangements may include the collection of sales and other similar taxes that are then remitted to the related taxing authority. We have elected to present the amounts collected for these taxes net of the related tax expense rather than presenting them as additional revenue.

We grant credit limits and terms to customers based upon traditional practices and competitive conditions. Typical terms vary by market, but payments are generally due in 60 days or less from invoicing for most of our product sales.

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Sales Incentives

We provide various sales incentives to both our distribution network and OEM customers. These programs are designed to promote the sale of our products or encourage the usage of our products by OEM customers. When there is uncertainty surrounding these sales incentives, we may reduce the amount of revenue we recognize under a contract through an incentive accrual. When the uncertainty has been resolved the accrual will be adjusted accordingly. Sales incentives primarily fall into three categories:

•Aftermarket rebates;

•Volume and growth rebates; and

•Marketing Development Fund (“MDF”).

For aftermarket rebates, we provide incentives to promote sales to certain dealers and end-markets. These rebates are typically paid on a quarterly, or more frequent, basis. At the time of the sale, we consider the expected amount of these rebates when determining the overall transaction price. Estimates are adjusted at the end of each month or quarter based sales and historical experience.

For volume and growth rebates, we provide certain customers with rebate opportunities for attaining specified volumes during a particular quarter or year. We consider the expected amount of these rebates at the time of the original sale as we determine the sales revenue. We update our assessment of the amount of rebates that will be earned on a monthly or quarterly basis based on our best estimate of the volume levels the customer will reach during the measurement period.

For MDF’s, these are funds to support our customers primarily for business development, marketing and advertising programs, promotional items jointly developed, dealer incentives and partnering programs. Depending on the agreement, the funds are accrued for and paid on a quarterly basis, annual basis, or as agreed with those customers receiving these funds.

Sales Returns

The initial determination of the sales revenue may also be impacted by product returns. Rights of return do not exist for the majority of our sales other than for quality issues. We do offer certain return rights in our aftermarket business, where some aftermarket customers are permitted to return a small amount of filters each year. An estimate of future returns is accounted for at the time of sale as a reduction in the overall sales revenue based on historical return rates.

Foreign Currency Transactions and Translation

We translate assets and liabilities of foreign entities to U.S. dollars, where the local currency is the functional currency, at month-end exchange rates. We translate income and expenses to U.S. dollars using weighted-average exchange rates. We record adjustments resulting from translation in a separate component of accumulated other comprehensive loss and include the adjustments in net income only upon sale, loss of controlling financial interest or liquidation of the underlying foreign investment.

Foreign currency transaction gains and losses are included in net income. For foreign entities where the U.S. dollar is the functional currency, including those operating in highly inflationary economies when applicable, we remeasure non-monetary balances and the related income statement amounts using historical exchange rates. We include the resulting gains and losses in net income, including the effect of derivatives in our Consolidated Statements of Net Income, which combined with transaction gains (losses) amounted to $(3.3) million, $0.3 million and $0.4 million for the years ended December 31, 2023, 2022 and 2021, respectively.

Income Tax Accounting

We determine our income tax expense using the asset and liability method. Under this method, deferred tax assets and liabilities are recognized for the future tax effects of temporary differences between the financial statement carrying amounts of existing assets and liabilities and their respective tax basis. Future tax benefits of net operating loss and credit carryforwards are also recognized as deferred tax assets. We evaluate the recoverability of our deferred tax assets each quarter by assessing the likelihood of future profitability and available tax planning strategies that could be implemented to realize our net deferred tax assets. A valuation

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allowance is recorded to reduce the tax assets to the net value management believes is more likely than not to be realized. In the event our operating performance deteriorates, future assessments could conclude that a larger valuation allowance will be needed to further reduce the deferred tax assets. In addition, we operate within multiple taxing jurisdictions and are subject to tax audits in these jurisdictions. These audits can involve complex issues, which may require an extended period of time to resolve. We accrue for the estimated additional tax and interest that may result from tax authorities disputing uncertain tax positions. We believe we made adequate provisions for income taxes for all years that are subject to audit based upon the latest information available.

Our income tax provision was prepared following the separate return method, which applies Accounting Standards Codification (“ASC”) 740 to the standalone financial statements of each member of the combined group as if the group member were a separate and standalone enterprise. Due to this treatment, tax transactions included in the Consolidated Financial Statements of the Parent may not be included in the separated Consolidated Financial Statements of the Company. Similarly, there may be certain tax attributes within the Consolidated Financial Statements of the Company that would not be found in the Consolidated Financial Statements and tax returns of the Parent. Examples of such items include net operating losses, tax credits carry forwards and valuation allowances, which may exist in the standalone financial statements but not in the Parent’s Consolidated Financial Statements.

Furthermore, the Consolidated Financial Statements do not reflect any amounts due to or due from the Parent for income tax related matters as these matters are settled at the end of each year.

A more complete description of our income taxes and the future benefits of our net operating loss and credit carryforwards is disclosed in Note 6, Income Taxes.

Russian Operations

On March 17, 2022, Cummins’ Board of Directors decided to indefinitely suspend its operations in Russia due to the ongoing conflict in Ukraine. As a result of the suspension of operations, we evaluated the recoverability of assets in Russia and assessed other liabilities that may have been incurred. We have experienced, and expect to continue to experience, an inability to collect customer receivables. We also determined that we have some inventory items that were designated specifically for Russia that will not be able to be used elsewhere.

As a result of this suspension, approximately $1.7 million of accounts receivable were reserved for and $0.6 million of inventory was written off in 2022. As of December 31, 2023, the accounts receivable reserves for our Russia operations were $1.5 million and no inventory was written off during the year. The associated expense is recorded within Other operating expense, net and Cost of sales, respectively, in the Consolidated Statements of Net Income.

Cash and Cash Equivalents

Cash and cash equivalents consist of bank checking accounts and money market accounts. Atmus considers all highly liquid investments with original maturities of three months or less at the time of purchase to be cash equivalents. Cash and cash equivalents are carried at cost, which approximates fair value.

Accounts Receivable and Allowance for Doubtful Accounts

Trade accounts receivable represent amounts billed to customers and not yet collected or amounts that have been earned but may not be billed until the passage of time and are recorded when the right to consideration becomes unconditional. Trade accounts receivable are recorded at the invoiced amount, which approximates net realizable value and generally do not bear interest. The allowance for doubtful accounts is our best estimate of the amount of expected credit losses in our existing accounts receivable. We determine the allowance based on our historical collection experience and by performing an analysis of our accounts receivable in light of the current economic environment. This estimate of expected losses reflects those losses expected to occur over the contractual life of the receivable. We review our allowance for doubtful accounts at least quarterly, and more frequently as needed. In addition, when necessary, we provide an allowance for the full amount of specific accounts deemed to be uncollectible. Account balances are charged off against the allowance in the period in which we determine that it is probable the receivable will not be recovered. The

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allowance for doubtful accounts balances were $2.9 million and $2.4 million at December 31, 2023 and 2022, respectively; the increase was principally driven by Russia as described above. Bad debt write-offs were not material during the three years ended December 31, 2023.

Inventories

Our inventories are stated at the lower of cost or net realizable value. As of December 31, 2023 and 2022, approximately 32.1% and 34.4%, respectively, of our inventories were valued using the last-in, first-out (LIFO) cost method. The cost of other inventories is generally valued using the first-in, first-out (FIFO) cost method. Our inventories include estimates for adjustments related to annual physical inventory results and for inventory cost changes under the LIFO cost method. Due to significant movements of partially-manufactured components and parts between manufacturing plants, we do not internally measure, nor do our accounting systems provide, a meaningful segregation between raw materials and work-in-process. See Note 7, Inventories, for additional information.

Property, Plant and Equipment

We record property, plant and equipment at cost, inclusive of finance lease assets, with the adoption of ASC 842. We depreciate the cost of the majority of our property, plant and equipment using the straight-line method with depreciable lives ranging from 20 to 40 years for buildings and 3 to 15 years for machinery, equipment and fixtures. Finance lease asset amortization is recorded in depreciation expense. We expense normal maintenance and repair costs as incurred. Depreciation expense totaled $21.5 million, $20.7 million and $21.0 million for the years ended December 31, 2023, 2022 and 2021, respectively. See Note 8, Property, Plant and Equipment and Note 9, Leases, for additional information.

Impairment of Long-Lived Assets

We review our long-lived assets for possible impairment whenever events or circumstances indicate that the carrying value of an asset or asset group may not be recoverable. We assess the recoverability of the carrying value of the long-lived assets at the lowest level for which identifiable cash flows are largely independent of the cash flows of other assets and liabilities. An impairment of a long-lived asset or asset group exists when the expected future pre-tax cash flows (undiscounted and without interest charges) estimated to be generated by the asset or asset group is less than its carrying value. If these cash flows are less than the carrying value of such asset or asset group, an impairment loss is measured based on the difference between the estimated fair value and carrying value of the asset or asset group. Assumptions and estimates used to estimate cash flows in the evaluation of impairment and the fair values used to determine the impairment are subject to a degree of judgment and complexity. Any changes to the assumptions and estimates resulting from changes in actual results or market conditions from those anticipated may affect the carrying value of long-lived assets and could result in a future impairment charge.

Leases

We determine if an arrangement contains a lease in whole or in part at the inception of the contract. Right-of-use (“ROU”) assets represent our right to use an underlying asset for the lease term while lease liabilities represent our obligation to make lease payments arising from the lease. All leases greater than 12 months result in the recognition of a ROU asset and a liability at the lease commencement date based on the present value of the lease payments over the lease term. As most of our leases do not provide the information required to determine the implicit rate, we use our incremental borrowing rate based on the information available at commencement date in determining the present value of lease payments. This rate is determined considering factors such as the lease term, our credit standing and the economic environment of the location of the lease. We use the implicit rate when readily determinable.

Our lease terms include all non-cancelable periods and may include options to extend (or to not terminate) the lease when it is reasonably certain that we will exercise that option. Leases that have a term of 12 months or less at the commencement date are expensed on a straight-line basis over the lease term and do not result in the recognition of an asset or a liability.

Lease expense for operating leases is recognized on a straight-line basis over the lease term. Lease expense for finance leases is generally front-loaded as the finance lease ROU asset is depreciated on a straight-line basis, but interest expense on the liability is recognized utilizing the interest method that results in

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more expense during the early years of the lease. We have lease agreements with lease and non-lease components, primarily related to real estate, vehicle and information technology (“IT”) assets. For vehicle and real estate leases, we account for the lease and non-lease components as a single lease component. For IT leases, we allocate the payment between the lease and non-lease components based on the relative value of each component. See Note 9, Leases, for additional information.

Goodwill

We have the option to first assess qualitative factors to determine whether it is more likely than not that the fair value of a reporting unit is less than its carrying value as a basis for determining whether it is necessary to perform an annual quantitative goodwill impairment test. We have elected this option for our reporting unit. In addition, the carrying value of goodwill must be tested for impairment on an interim basis in certain circumstances where impairment may be indicated.

When we are required or opt to perform the quantitative impairment test, the fair value of our reporting unit is estimated with either the market approach or the income approach using a discounted cash flow model. Our income approach method uses a discounted cash flow model in which cash flows anticipated over several periods, plus a terminal value at the end of that time horizon, are discounted to their present value using an appropriate rate of return.

The discounted cash flow model requires us to make projections of revenue, gross margin, operating expenses, working capital investment and fixed asset additions for our reporting unit over a multi-year period. Additionally, management must estimate a weighted-average cost of capital, which reflects a market rate, for our reporting unit for use as a discount rate. The discounted cash flows are compared to the carrying value of the reporting unit and, if less than the carrying value, the difference is recorded as a goodwill impairment loss. In addition, we also perform a sensitivity analysis to determine how much our forecasts can fluctuate before the fair value of a reporting unit would be lower than its carrying amount.

We perform the required procedures as of the end of our fiscal third quarter.

Changes in our projections or estimates, a deterioration of our operating results and the related cash flow effect or a significant increase in the discount rate could decrease the estimated fair value of our reporting unit and result in a future impairment of goodwill. See Note 10, Goodwill, for additional information.

Warranty

We estimate and record a liability for standard warranty programs at the time our products are sold. Our estimates are based on historical experience and reflect management’s best estimates of expected costs at the time products are sold and subsequent adjustment to those expected costs when actual costs differ. As a result of the uncertainty surrounding the nature and frequency of product campaigns, the liability for such campaigns is recorded when we commit to a recall action or when a recall becomes probable and estimable, which generally occurs when it is announced. We review and assess the liability for these programs on a quarterly basis. See Note 11, Product Warranty Liability, for additional information.

Research and Development

Our research and development programs are focused on product improvements, product extensions, innovations and cost reductions for our customers. Research and development expenditures include salaries, contractor fees, building costs, utilities, testing, technical IT, administrative expenses and allocation of corporate costs and are expensed, net of contract reimbursements, when incurred. Research and development expenses were $42.3 million, $38.5 million and $41.6 million for the years ended December 31, 2023, 2022 and 2021, respectively.

Related Party Transactions

In accordance with the provisions of various joint venture agreements, we may purchase products and components from our joint ventures, sell products and components to our joint ventures and our joint ventures may sell products and components to unrelated parties. Joint venture transfer prices may differ from normal selling prices. Certain joint venture agreements transfer product at cost, some transfer product on a cost-plus basis, and others transfer product at market value. We also may purchase products and components from other

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Cummins’ owned entities and sell products to other Cummins’ owned entities. These purchases and sales take place on terms resulting in margins within a reasonable range of market rates. See Note 16, Relationship with Parent and Related Parties, for additional information.

Segment Information

We operate our business as one operating segment and also one reportable segment based on the manner in which we review and evaluate operating performance. The operating results are regularly reviewed by Atmus’ chief operating decision maker on a consolidated basis. The chief operating decision maker is our Chief Executive Officer.

Stock-Based Compensation

We maintain a share-based compensation plan, which authorizes the granting of various equity-based incentives, including restricted stock units (“RSU”s) and performance share units (“PSU”s). Stock compensation expense is generally amortized on a straight line basis over the service period during which awards are expected to vest, generally three years.

RSUs are typically granted to selected management employees on an annual basis and vest over three years. Dividend equivalents are paid during the vesting period. The fair value of our RSUs and other stock-based awards is measured at the market price of our Common Stock on the grant date.

PSUs vest based on varying performance, market and service conditions. The fair value of our PSUs is measured at the market price of our Common Stock on the grant date. The final award may equal 0-200 percent of the target grant, based on our actual performance during the vesting period.

Forfeitures are estimated on the grant date for all of our stock-based compensation awards.

Pensions and other Postretirement Benefits

Atmus and its Parent provide a range of benefits, including pensions, postretirement and post-employment benefits to eligible current and former employees, of which certain of our employees participate. For purposes of Atmus’ Consolidated Financial Statements, participation in Cummins plans is being treated as a multiemployer plan. Accordingly, the benefit obligations, plan assets and accumulated other comprehensive income (loss) amounts are not shown in the Consolidated Balance Sheets for these plans. Atmus plans that have been transferred as part of the transaction, however, are treated as single-employer plans. See Note 13, Pensions and Other Postretirement Benefits, for more information.

Net Parent Investment

Net Parent Investment represents our Parent’s historical investment in us, our accumulated net earnings after taxes and the net effect of transactions with and allocations from our Parent prior to the IPO.

Net Parent Investment in the Consolidated Balance Sheets represents Cummins’ net investment in Atmus and is presented in lieu of shareholders’ equity. The Consolidated Statements of Changes in Net Parent Investment include net cash transfers between Cummins and Atmus pursuant to the centralized cash management and other treasury-related functions performed by Cummins. The Net Parent Investment account includes the settlement and net effect of transactions with and corporate allocations from Cummins including administrative expenses such as corporate finance, accounting and field shared services, information services, human resources, marketing, corporate office and other services.

In the separation agreement, there were certain assets and liabilities which were retained by Cummins and were reflected as Net Parent Investment in the Company’s Consolidated Financial Statements, and those that were transferred to the Company through Net Parent Investment in the Company’s Consolidated Financial Statements.

The net effect of other assets and liabilities and related income and expenses recorded at the corporate level and pushed down to Atmus are also included in Net Parent Investment.

All transactions reflected in Net Parent Investment in the accompanying Consolidated Balance Sheets have been considered cash receipts and payments for purposes of the Consolidated Statements of Cash Flows and

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are reflected in financing activities in the accompanying Consolidated Statements of Cash Flows with the exception of certain non-cash items related to an unrecognized tax liability for FIN48 reserves and leased assets and related depreciation, which were retained by Cummins upon completion of Atmus’ IPO. These items have been included as supplemental information to the Consolidated Statements of Cash Flows.

Recent Accounting Pronouncements Net Yet Adopted

Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures

In November 2023, the Financial Accounting Standards Board (“FASB”) issued Accounting Standard Update (ASU) No. 2023-07, Segment Reporting (Topic 280): Improvements to Reportable Segment Disclosures, which requires a public entity to disclose significant segment expenses and other segment items on an annual and interim basis and provide in interim periods all disclosures about a reportable segment’s profit or loss and assets that are currently required annually. Additionally, it requires a public entity to disclose the title and position of the Chief Operating Decision Maker (“CODM”). The ASU does not change how a public entity identifies its operating segments, aggregates them, or applies the quantitative thresholds to determine its reportable segments. The new standard is effective for fiscal years beginning after December 15, 2023, and interim periods within fiscal years beginning after December 15, 2024, with early adoption permitted. A public entity should apply the amendments in this ASU retrospectively to all prior periods presented in the financial statements. We expect this ASU to only impact our disclosures with no impacts to our results of operations, cash flows and financial condition.

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 only impact our disclosures with no impacts to our results of operations, cash flows and financial condition.

NOTE 4: REVENUE FROM CONTRACTS WITH CUSTOMERS

Disaggregation of Revenue

Revenue by Geographic Area

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

	Years ended December 31,
In millions	2023		2022		2021
United States	$	746.5	$	720.5	$	619.6
Other international	881.6		841.6		819.2
Total net sales	$	1,628.1	$	1,562.1	$	1,438.8

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Revenue by Product Category

The table below presents our consolidated sales by product category.

	Years ended December 31,
In millions	2023		2022		2021
Fuel	$	705.2	$	674.7	$	612.6
Lube	305.4		306.9		278.7
Air	282.4		267.8		242.9
Other	335.1		312.7		304.6
Total net sales	$	1,628.1	$	1,562.1	$	1,438.8

Revenue by Major Customer

Related party sales to Cummins represented 17.4% of net sales in 2023 ($282.5 million), 19.3% of net sales in 2022 ($302.2 million) and 18.5% of net sales in 2021 ($266.8 million). For the years ended December 31, 2023, 2022 and 2021, two external customers, PACCAR and the Traton Group, each represented greater than 10% of our annual net sales. These customers represented 15.6% and 11.8% of net sales in 2023, 16.2% and 12.0% of net sales in 2022 and 15.1% and 11.7% of net sales in 2021. No other customers exceeded 10% of net sales in the three years presented.

NOTE 5: INVESTMENTS IN EQUITY INVESTEES

Investments and advances related to equity method investees and our ownership percentages were as follows:

			December 31,
In millions	Ownership Percentage		2023		2022
Shanghai Fleetguard Filter Co. Ltd.	50.0	%	$	24.9	$	23.9
Fleetguard Filters Pvt. Ltd.	49.5	%	$	58.0	$	51.4
Filtrum Fibretechnologies Pvt. Ltd.	49.7	%	$	1.9	$	1.7
Investments and advances related to equity method investees			$	84.8	$	77.0

Dividends received from our unconsolidated equity investees were $19.8 million, $23.1 million and $24.0 million in 2023, 2022 and 2021, respectively.

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

	Years ended December 31,
In millions	2023		2022		2021
Shanghai Fleetguard Filter Co. Ltd.	$	5.9	$	5.3	$	10.2
Fleetguard Filters Pvt. Ltd.	$	21.5	$	17.1	$	16.4
Filtrum Fibretechnologies Pvt. Ltd.	$	0.2	$	0.3	$	0.2
Atmus share of net income	$	27.6	$	22.7	$	26.8
Royalty and interest income	$	6.0	$	5.3	$	5.6
Equity, royalty and interest income from investees	$	33.6	$	28.0	$	32.4

Our joint ventures are primarily intended to allow us to increase our market penetration in geographic regions, reduce capital spending, streamline our supply chain management and develop technologies. The results and investments in our joint ventures in which we have 50 percent or less ownership are included in “Equity, royalty and interest income from investees” and “Investments and advances related to equity method investees” in our Consolidated Statements of Net Income and Consolidated Balance Sheets, respectively.

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•Shanghai Fleetguard Filter Co. Ltd. — Shanghai Fleetguard Filter Co. Ltd. is a limited liability company (Sinoforeign joint venture) incorporated in Shanghai of the People’s Republic of China on April 27, 1994 by Dongfeng Motor Parts and Components Group Co., Ltd. and Cummins (China) Investment Co. with 50% partnership. Shanghai Fleetguard Filter Co. Ltd.’s approved scope of business operations includes the manufacture and sales of various filters and filter spare parts for diesel engines, trucks, buses, mining, excavators and other construction equipment to customers in China and exports to Atmus. Shanghai Fleetguard Filter Co. Ltd. has three manufacturing sites, Shanghai, Wuhan and Shiyan, with Shanghai being the primary location.

•Fleetguard Filters Pvt. Ltd. — Fleetguard Filters Pvt. Ltd. is a limited company incorporated in 1987 by Perfect Sealing Systems Private Limited (India) and Cummins Filtration Inc. (USA) which set a benchmark by providing premium filtration solutions for both on and off-highway applications from Air, Lube, Fuel, Hydraulic and Water Filtration to Coolants & Chemicals. They focus on supplies to first fit and aftermarket customers in India and exports to Atmus. The Head Office of Fleetguard Filters Pvt. Ltd. is located at Baner, in Pune, Maharashtra, India and has seven manufacturing plants in different states of India — Dharwad in Karnataka, Hosur in Tamil Nadu, Jamshedpur in Jharkhand, Nandur, Wadki and Loni Khalbhor in Maharashtra, and Sitarganj in Uttarakhand.

Equity Investee Financial Summary

Summary financial information for our equity investees was as follows:

	Years ended December 31,
In millions	2023	2022	2021
Net sales	435.2	392.5	429.7
Gross margin	170.0	136.3	98.8
Net income	56.2	38.4	53.9
Atmus share of net income	27.6	22.7	26.8
Royalty and interest income	6.0	5.3	5.6
Total equity, royalty and interest income from investees	33.6	28.0	32.4
Current assets	182.5	157.9	186.0
Non-current assets	87.4	82.0	84.1
Current liabilities	(89.1)	(75.9)	(88.0)
Non-current liabilities	(4.7)	(7.3)	(5.3)
Net assets	176.1	156.7	176.8
Atmus share of net assets	85.7	78.9	88.1

NOTE 6: INCOME TAXES

The following table summarizes income before income taxes:

	Years ended December 31,
In millions	2023		2022		2021
U.S. income (1)	$	136.3	$	69.1	$	71.9
Foreign income (1)	90.1		142.9		144.7
Income before income taxes	$	226.4	$	212.0	$	216.6

(1) The change in the mix of earnings between U.S. and foreign operations from 2022 to 2023 primarily relates to a legal entity restructuring implemented in anticipation of the IPO and the Separation.

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Income tax expense (benefit) consisted of the following:

	Years ended December 31,
In millions	2023		2022		2021
Current
U.S. federal and state	$	38.4	$	28.6	$	15.5
Foreign	26.7		25.7		33.7
Total current income tax expense	65.1		54.3		49.2
Deferred
U.S. federal and state	(10.4)		(11.4)		1.6
Foreign	0.4		(1.3)		(4.3)
Total deferred income tax expense (benefit)	(10.0)		(12.7)		(2.7)
Income tax expense	$	55.1	$	41.6	$	46.5

Total income taxes paid were approximately $41.3 million, $20.3 million and $17.6 million in 2023, 2022 and 2021, respectively.

A reconciliation of the statutory U.S. federal income tax rate to the effective tax rate was as follows:

	Years ended December 31,
	2023	2022	2021
Statutory U.S. federal income tax rate	21.0%	21.0%	21.0%
State income tax, net of federal effect	1.4%	0.9%	1.0%
Differences in rates and taxability of foreign subsidiaries and joint ventures	3.9%	(2.6)%	(1.2)%
Research tax credits	(1.3)%	(0.6)%	(1.1)%
Foreign derived intangible income	(1.7)%	(1.3)%	(1.2)%
Valuation allowance	—%	(0.4)%	0.7%
Uncertain tax positions	0.1%	2.5%	1.6%
Other, net	0.9%	0.1%	0.7%
Effective tax rate	24.3%	19.6%	21.5%

Our effective tax rate for 2023 was 24.3 percent compared to 19.6 percent for 2022 and 21.5 percent for 2021. The increase in our effective tax rate was primarily due to changes in the mix of our income before income taxes between the U.S. and foreign countries.

At December 31, 2023, $129.9 million of non-U.S. earnings are considered indefinitely reinvested in operations outside the U.S. for which deferred taxes have not been provided. Determination of the related deferred tax liability, if any, is not practicable because of the complexities associated with the hypothetical calculation.

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Carryforward tax benefits and the tax effect of temporary differences between financial and tax reporting that give rise to net deferred tax assets (liabilities) were as follows:

	December 31,
In millions	2023		2022
Deferred tax assets
Foreign carryforward benefits	$	5.6	$	18.6
Accrued expenses	14.3		15.5
Warranty expenses	2.5		3.5
Lease liabilities	2.7		4.1
Research and development capitalization	15.6		—
Other	5.1		12.3
Gross deferred tax assets	45.8		54.0
Valuation allowance	(3.7)		(16.4)
Total deferred tax assets	42.1		37.6
Deferred tax liabilities
Property, plant and equipment	7.8		8.0
Unremitted income of foreign subsidiaries and joint ventures	13.9		12.4
Employee benefit plans	0.7		1.2
Lease assets	3.2		4.0
Other	3.7		5.0
Total deferred tax liabilities	29.3		30.6
Net deferred tax assets	$	12.8	$	7.0

Our foreign carryforward benefits as of December 31, 2023 may be carried forward indefinitely, subject to certain utilization limitations.

A valuation allowance is recorded to reduce the gross deferred tax assets to an amount we believe is more likely than not to be realized. The valuation allowance is primarily attributable to the uncertainty regarding the realization of foreign net operating loss carryforward benefits.

A reconciliation of the valuation allowance for the years ended December 31, 2023, 2022 and 2021 was as follows:

	Years ended December 31,
In millions	2023		2022		2021
Balance at beginning of year	$	16.4	$	17.6	$	16.0
Additions charged to tax expense	0.1		0.4		2.1
Valuation allowance reversal	—		(1.6)		(0.5)
Other (1)	(12.8)		—		—
Balance at end of year	$	3.7	$	16.4	$	17.6

(1) Pursuant to the Separation Agreement, includes certain assets and liabilities, including deferred tax assets, and corresponding valuation allowances which were retained by Cummins. In addition, includes impact of currency changes and the expiration of net operating losses for which a full valuation allowance was recorded.

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Our Consolidated Balance Sheets contain the following tax related items:

	December 31,
In millions	2023		2022
Prepaid expenses and other current assets
Refundable income taxes	$	2.0	$	0.8
Other assets
Deferred income tax assets	$	14.2	$	14.3
Other accrued expenses
Income tax payable	$	10.3	$	6.0
Other liabilities
One-time transition tax	$	—	$	0.7
Deferred income tax liabilities	$	1.4	$	7.3

A reconciliation of unrecognized tax benefits for the years ended December 31, 2023, 2022 and 2021 was as follows:

	December 31,
In millions	2023		2022		2021
Balance at beginning of year	$	22.2	$	19.0	$	16.6
Additions to current year tax positions	0.2		3.2		2.4
Additions to prior years’ tax positions	—		—		—
Reductions to prior years’ tax positions (1)	(22.2)		—		—
Balance at end of year	$	0.2	$	22.2	$	19.0

(1) Pursuant to the Separation Agreement, includes certain assets and liabilities, including contingency reserves which were retained by Cummins

The total amount of unrecognized tax benefits in 2023, 2022 and 2021, if recognized, would favorably impact the effective tax rate in future periods.

We have accrued interest expense related to the unrecognized tax benefits of zero, $7.0 million and $5.0 million as of December 31, 2023, 2022 and 2021, respectively. We recognize potential accrued interest and penalties related to unrecognized tax benefits in income tax expense.

Audit outcomes and the timing of audit settlements are subject to significant uncertainty. Although we believe that adequate provision has been made for such issues, there is the possibility that the ultimate resolution of such issues could have an adverse effect on our earnings. Conversely, if these issues are resolved favorably in the future, the related provision would be reduced, thus having a positive impact on earnings.

As a result of our global operations, we file income tax returns in various jurisdictions including U.S. federal, state and foreign jurisdictions. We are routinely subject to examination by taxing authorities throughout the world, including Australia, Belgium, Brazil, Canada, China, France, India, Mexico, the U.K. and the U.S. With few exceptions, our U.S. federal, major state and foreign jurisdictions are no longer subject to income tax assessments for years before 2019.

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NOTE 7: INVENTORIES

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

	December 31,
In millions	2023		2022
Finished products	$	179.2	$	195.9
Work-in-process and raw materials	101.1		92.4
Inventories at FIFO cost	280.3		288.3
Excess of FIFO over LIFO	(30.3)		(43.3)
Total inventories	$	250.0	$	245.0

NOTE 8: PROPERTY, PLANT AND EQUIPMENT

Details of our property, plant and equipment balance were as follows:

	December 31,
In millions	2023		2022
Land and buildings	$	69.9	$	68.7
Machinery, equipment and fixtures	320.8		304.1
Construction in process	57.3		35.4
Property, plant and equipment, gross	448.0		408.2
Less: Accumulated depreciation	(273.4)		(259.8)
Property, plant and equipment, net	$	174.6	$	148.4

NOTE 9: LEASES

Our lease portfolio consists primarily of real estate and equipment leases. Our real estate leases primarily consist of land, office, distribution, warehousing and manufacturing facilities. These leases typically range in term from 2 to 50 years and may contain renewal options for periods up to 10 years at our discretion. Our equipment lease portfolio consists primarily of vehicles, fork trucks and IT equipment. These leases typically range in term from two years to three years and may contain renewal options. Our leases generally do not contain variable lease payments other than (1) certain foreign real estate leases which have payments indexed to inflation and (2) certain real estate executory costs (such as taxes, insurance and maintenance), which are paid based on actual expenses incurred by the lessor during the year. Our leases generally do not include residual value guarantees.

Our operating lease cost was $10.5 million, $10.7 million, and $10.6 million for the years ended December 31, 2023, 2022 and 2021, respectively. Our finance lease cost, short-term lease cost and variable lease cost were immaterial for the years ended December 31, 2023, 2022 and 2021.

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Supplemental balance sheet information related to leases:

	December 31,
In millions	2023		2022		Balance Sheet Location
Assets
Operating	$	24.8	$	32.4	Other assets
Finance(1)	$	0.7	$	0.6	Property, plant and equipment, net
Total lease assets	$	25.5	$	33.0
Liabilities
Current
Operating	$	7.1	$	9.0	Other accrued expenses
Finance	$	0.3	$	0.4	Other accrued expenses
Long-term
Operating	$	18.5	$	23.2	Other liabilities
Finance	$	0.5	$	0.7	Other liabilities
Total lease liabilities	$	26.4	$	33.3

(1)Finance lease assets were recorded net of accumulated amortization of $0.9 million and $1.3 million at December 31, 2023 and 2022.

Supplemental cash flow and other information related to leases:

	Years ended December 31,
In millions	2023		2022		2021
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$	8.8	$	9.4	$	9.4
Right-of-use assets obtained in exchange for lease obligations
Operating leases	$	11.8	$	7.4	$	14.7
Finance leases	$	0.2	$	0.8	$	1.0

Additional information related to leases:

	December 31,
	2023		2022
Weighted-average remaining lease term (in years)
Operating leases	4.2		3.8
Finance leases	3.2		3.6
Weighted-average discount rate
Operating leases	4.9	%	3.4	%
Finance leases	2.2	%	1.5	%

Following is a summary of the future minimum lease payments due to finance and operating leases with terms of more than one year at lease commencement at December 31, 2023, together with the net present value of the minimum payments:

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In millions	Finance Leases		Operating Leases
2024	$	0.4	$	8.1
2025	0.2		6.8
2026	0.1		6.0
2027	0.1		3.6
2028	0.1		2.0
After 2028	—		2.1
Total minimum lease payments	0.9		28.6
Interest	(0.1)		(3.0)
Present value of net minimum lease payments	$	0.8	$	25.6

NOTE 10: GOODWILL

Goodwill is not amortized but it is subject to impairment testing at the reporting unit on an annual basis, or more often if events or circumstances indicate there may be impairment. We perform a goodwill impairment evaluation for our reporting unit annually. There was no impairment of goodwill during the periods covered by these Consolidated Financial Statements.

NOTE 11: PRODUCT WARRANTY LIABILITY

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

	December 31,
In millions	2023		2022		2021
Balance, beginning of year	$	15.5	$	23.9	$	23.2
Provision for base warranties issued	8.6		1.6		5.9
Payments made during period	(6.0)		(7.0)		(7.6)
Changes in estimates for pre-existing product warranties	(4.0)		(2.6)		2.2
Foreign currency translation and other	(0.1)		(0.4)		0.2
Balance, end of year	$	14.0	$	15.5	$	23.9

Warranty liabilities on our Consolidated Balance Sheets were as follows:

	December 31,
In millions	2023		2022
Current portion	$	5.4	$	5.9
Long-term portion	8.6		9.6
Total	$	14.0	$	15.5

Fuel Heater Campaign Accrual

Quality issues were identified with a particular application of a fuel heater which primarily impacted one customer, resulting in a recall campaign. A total of $24.2 million was accrued for this campaign during 2020 and 2019. The remaining accrual balance at December 31, 2023 was $3.0 million.

NOTE 12. DEBT AND BORROWING ARRANGEMENTS

Atmus entered into the Credit Agreement with Cummins and 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.

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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 December 31, 2023, $600 million has been drawn on the term loan and no amount was drawn on the revolving credit facility. These amounts are included within Long-term debt and Current maturities of long-term debt on the Balance Sheet. As of December 31, 2023, Atmus’ fair value of Long-term debt was approximately $594 million, which was derived from Level 2 input measures.

Our credit lines available as of December 31, 2023 and December 31, 2022 include:

	As of December 31, 2023		As of December 31, 2022
	Facility Amount	Borrowed Amount	Facility Amount	Borrowed Amount
	(in millions)
Credit facilities:
Term loan September 30, 2027(1)	600.0	600.0	—	—
Revolving credit facility September 30, 2027(1)	400.0	—	—	—

(1)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 December 31, 2023, Atmus complied with all financial covenants. 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):

2024		2025		2026		2027		2028		Thereafter		Total
$	7.5	$	22.5	$	30.0	$	540.0	$	—	$	—	$	600.0

NOTE 13: PENSIONS AND OTHER POSTRETIREMENT BENEFITS

Pension Plans

Multiemployer Plans with Cummins

Cummins offers various retirement benefits (“Cummins Plans”) to its eligible employees which includes eligible employees of Atmus, both in the U.S. and foreign countries. Since Cummins provides these benefits to eligible employees and retirees of Atmus, the costs to participating employees of Atmus in these plans are reflected in the Consolidated Financial Statements, while the related assets and liabilities are retained by Cummins.

The total Cummins defined benefit pension plan service costs allocated to Atmus were $5.7 million, $5.8 million and $6.8 million in 2023, 2022 and 2021, respectively. These costs are reflected in the Consolidated Financial Statements as a component of Cost of sales, Research, development and engineering expenses and Selling, general and administrative expenses. The non-service benefit allocated to Atmus was $3.4 million, $3.4 million and $2.7 million in 2023, 2022 and 2021, respectively. The non-service benefit is reflected as a component of Other income, net.

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The following is a listing of significant defined benefit pension plans sponsored by Cummins in which eligible Atmus employees and retirees participate:

Country	Name of Defined Benefit Plan(s)
Mexico	Pension Plan, Seniority Premium, Termination Indemnity(a)
United Kingdom	Cummins UK Pension Plan
United States	The Cummins Pension Plan
	Cummins Inc. Excess Benefit Retirement Plan
	Cummins Inc. Postretirement Health Care and Life Insurance Plans

Atmus Plans

Atmus has defined benefit pension plans, which provide retirement benefits to eligible participants and are collectively referred to as the “Atmus Plans.” The plans’ benefits are primarily based on employee earnings and credited service.

Plans in two countries, Belgium and Mexico, were newly established in 2022. Prior to the establishment of the plans in Belgium and Mexico, Filtration employees’ participated in the Cummins' plans.

The total Atmus Plans’ defined benefit pension plan expenses were $0.9 million in 2023, $2.0 million in 2022 and $0.8 million in 2021. Service costs allocated to Atmus were $0.6 million in 2023, $1.5 million in 2022 and $0.6 million in 2021. These costs are reflected in the Consolidated Financial Statements as a component of Cost of sales, Research, development and engineering expenses and Selling, general and administrative expenses. The non-service costs allocated to Atmus were immaterial for each of the years ended December 31, 2023, 2022 and 2021. These non-service costs are reflected as a component of Other income, net.

The total Atmus Plans’ defined benefit pension plan liabilities were $9.6 million and $7.3 million as of December 31, 2023 and 2022, respectively. These liabilities are reflected in the Consolidated Financial Statements as a component of Other liabilities.

The following is a listing of significant Atmus Plans:

Country	Name of Defined Benefit Plan(s)
Belgium	Reglement Plannen Leven en Overligden
France	Indemnité de Départ en Retraite
Germany	ersorgungsordnung von October 1979
Japan	Employee Retirement Allowance Plan
Mexico	Pension Plan, Seniority Premium, Termination Indemnity(a)

(a)New plans have been established in Mexico, but for a period of time, certain Atmus employees will continue to participate in the Cummins' plans until they are transferred into the new Atmus plans.

NOTE 14: 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 claims or litigation that the Company believes, individually or in

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the aggregate, will have a material adverse effect on its financial position, results of operations, cash flows, liquidity or capital resources. Atmus carries various forms of commercial, property and casualty, product liability and other forms of insurance. Where Atmus has not obtained its own insurance policies, it will continue to be covered under Cummins’ insurance policies while Atmus continues to be majority owned by Cummins; however, such insurance may not be applicable or adequate to cover the costs associated with a judgment against Atmus with respect to these lawsuits, claims and proceedings. While the Company believes it has established adequate accruals for our 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 15: ACCUMULATED OTHER COMPREHENSIVE LOSS

Following are the changes in accumulated other comprehensive income (loss) by component:

	For the Years Ended December 31,
	2023		2022		2021
	(in millions)
Currency translation adjustments:
Balance at beginning of period	$	(56.7)	$	(40.1)	$	(28.1)
Currency translation adjustments	$	0.6	$	(16.6)	$	(12.0)
Other comprehensive income (loss), net	$	0.6	$	(16.6)	$	(12.0)
Balance at end of period	$	(56.1)	$	(56.7)	$	(40.1)
Pensions and other benefit plans:
Balance at beginning of period	$	0.9	$	(1.5)	$	(2.2)
Change in pensions and other benefit plans	$	(1.5)	$	3.1	$	1.0
Tax benefit (expense)	$	0.5	$	(0.7)	$	(0.3)
Other comprehensive (loss) income, net	$	(1.0)	$	2.4	$	0.7
Balance at end of period	$	(0.1)	$	0.9	$	(1.5)
Accumulated other comprehensive loss:
Balance at beginning of period	$	(55.8)	$	(41.6)	$	(30.3)
Total other comprehensive loss, net	$	(0.4)	$	(14.2)	$	(11.3)
Balance at end of period	$	(56.2)	$	(55.8)	$	(41.6)

NOTE 16: RELATIONSHIP WITH PARENT AND 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 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 Consolidated Financial Statements; however, the expenses reflected in the 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 Consolidated Financial Statements may not be indicative of expenses that will be incurred in the future by Atmus.

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The Company entered into the separation agreement and transition services agreement with Cummins, among other transaction agreements, all of which will govern the parties relationship following the IPO. This includes services provided by Cummins to the Company for a fixed term on a service-by-service basis. We will pay Cummins mutually agreed-upon fees for the services provided under the transition services agreement.

Corporate Costs/Allocations

The Consolidated Financial Statements include corporate costs incurred by Cummins for services that were provided to or on behalf of Atmus for the period prior to IPO. Such costs represent shared services and infrastructure provided by Cummins, including administrative, finance, human resources, information technology, legal, and other corporate and infrastructure services.

The corporate costs reflected in the Consolidated Financial Statements consist of direct charges to the business and indirect allocations to Atmus. The costs that were directly charged to Atmus, such as the shared services for finance provided by Cummins Business Services, were primarily determined based on actual usage.

Indirect allocations are related to shared services and infrastructure provided by Cummins that would benefit Atmus but have not been directly charged to Atmus in a manner discussed above. These corporate costs were allocated to Atmus using methods management believes are consistent and reasonable. The primary allocation factor is third-party revenue; however, other relevant metrics are also utilized based on the nature of the underlying activities. For example, headcount is used as the allocation driver to allocate the human resource departmental costs.

The expenses allocated and directly charged reflect all expenses that Cummins incurred on behalf of the Company. The expenses reflected in the Consolidated Financial Statements may not be indicative of the actual expenses that would have been incurred during the period presented if Atmus historically operated as a separate, stand-alone entity. All corporate charges and allocations have been deemed paid by Atmus to Cummins in the period in which the cost was recognized in the Consolidated Statements of Income.

Prior to the separation Cummins used a centralized approach to cash management and financing of its operations, including our operations. Accordingly, we transferred all of our cash to Cummins to be utilized in the central cash management program and as a result do not have cash allocated to us in the consolidated financial statements in 2022 and 2021.

Total corporate costs allocated to Atmus were $13.7 million, $45.0 million and $54.3 million for the years ended December 31, 2023, 2022 and 2021, respectively. Allocated corporate costs are included in Net sales, Cost of sales, Selling, general and administrative expenses, Research, development and engineering expenses and Other income, net. Post IPO, Atmus has and will continue to incur its own corporate costs associated with being a standalone publicly traded company.

Related Party Balances

Atmus had trade receivables of $37.9 million and $52.0 million for products sold to, and accounts payable of $54.8 million and $57.6 million for products and services purchased in the ordinary course from Cummins as of December 31, 2023 and December 31, 2022, respectively. Atmus’ sales to Cummins were $282.5 million, $302.2 million and $266.8 million for the years ended December 31, 2023, 2022 and 2021, respectively.

NOTE 17: STOCK-BASED COMPENSATION

Under the Atmus 2022 Omnibus Incentive Plan, Atmus is authorized to issue a maximum of 7.5 million shares of common stock to Atmus employees and non-employee directors.

Restricted Stock Units and Performance Share Units

Atmus recorded compensation expense related to RSUs and PSUs of $5.5 million during the year ended December 31, 2023 and zero during the years ended December 31, 2022 and 2021, respectively. The unamortized compensation expense related to Atmus RSUs and PSUs was $16.1 million and is expected to be recognized over a weighted-average period of 2.4 years.

Our RSU and PSU activity is reflected below:

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	Number of Shares	Grant Date	Weighted-Average Fair Value Per Share		Weighted-Average Aggregate Fair Value
Balance at January 1, 2023	—		$	—
Granted	763,480	Various	28.34		$	21.6	million
Vested	—		—
Forfeited	—		—
Balance at December 31, 2023	763,480		28.34

NOTE 18: 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 is computed by dividing net earnings by the weighted average number of outstanding common shares and common share equivalents relating to stock options and other stock incentive plans.

Basic and diluted EPS were calculated as follows:

	For the Years Ended December 31,
	2023		2022		2021
	(in millions, except per share data)
Net income	$	171.3	$	170.4	$	170.1
Weighted-average shares for basic EPS	83.3		83.3		83.3
Plus incremental shares from assumed conversions of long-term incentive plan shares	0.1		—		—
Weighted-average shares for diluted EPS	83.4		83.3		83.3
Basic earnings per share	2.06		2.05		2.04
Diluted earnings per share	$	2.05	$	2.05	$	2.04

Basic and diluted EPS for the years ended December 31, 2022 and 2021 were calculated using the shares of common stock that were issued and outstanding as of the completion of the IPO. For the periods prior to the IPO, it is assumed that there were no dilutive equity instruments as there were no equity awards of Atmus outstanding prior to the IPO. Post IPO, there were no anti-dilutive shares.

NOTE 19. SUPPLEMENTAL BALANCE SHEET DATA

Other assets included the following:

	December 31, 2023		December 31, 2022
	(in millions)
Operating lease assets(1)	$	24.8	$	32.4
Deferred income taxes	14.2		14.3
Long-term receivables	3.1		3.1
Other	9.4		7.2
Other assets	$	51.5	$	57.0

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Other accrued expenses included the following:

	December 31, 2023		December 31, 2022
	(in millions)
Marketing accruals	$	42.6	$	47.3
Other taxes payables	12.7		7.5
Income taxes payable	10.3		6.0
Current portion of operating lease liabilities(1)	7.1		9.0
Current portion of finance lease liabilities	0.3		0.4
Other	10.7		8.8
Other accrued expenses	$	83.7	$	79.0

Other liabilities included the following:

	December 31, 2023		December 31, 2022
	(in millions)
Long-term portion of operating lease liabilities(1)	$	18.5	$	23.2
Deferred income taxes	1.4		7.3
Long-term income taxes(1)	0.2		29.8
Other long-term liabilities	11.7		10.9
Other liabilities	$	31.8	$	71.2

(1)Balances at December 31, 2022 included an unrecognized tax liability for FIN48 reserves and leased assets and related depreciation, which have been retained by Cummins upon completion of Atmus’ IPO and are no longer included on Atmus’ Consolidated Balance Sheets at December 31, 2023. See Note 1, Description of the Business, and in Note 2, Basis of Presentation for more information.

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Item 9. Changes in and Disagreements With Accountants on Accounting and Financial Disclosure

None.

Item 9A. Controls and Procedures

Evaluation of Disclosure Controls and Procedures

The Company's disclosure controls and procedures are designed to ensure that information required to be disclosed by the Company in the reports that it files or submits under the Securities Exchange Act of 1934, as amended (the “Exchange Act”) is recorded, processed, summarized and reported within the time periods specified in the SEC’s rules and forms, and that such information is accumulated and communicated to management, including its Chief Executive Officer and Chief Financial Officer, as appropriate to allow timely decisions regarding required disclosure.

As required by Rules 13a-15 and 15d-15 under the Exchange Act, management, including our Chief Executive Officer and Chief Financial Officer, carried out an evaluation of the effectiveness of our disclosure controls and procedures as of December 31, 2023. Based upon their evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Exchange Act) were effective as of December 31, 2023.

Remediation of Material Weakness in Internal Control Over Financial Reporting

A material weakness is a deficiency, or a combination of deficiencies, in internal control over financial reporting, such that there is a reasonable possibility that a material misstatement of our annual or interim financial statements will not be prevented or detected on a timely basis.

During the second quarter of 2023, we identified a material weakness which resulted in errors in our related party receivables, related party payables, and net parent investment on the Balance Sheet; net cash provided by operating activities, and net cash used in financing activities on the Statements of Cash Flows; and, net transfers to parent on the Statements of Changes in Net Parent Investment, which resulted in a restatement of the unaudited condensed combined financial statements as of and for the period ending March 31, 2023 and a revision to the combined financial statements as of and for the years ending December 31, 2022, 2021 and 2020 and the unaudited condensed combined financial statements as of and for the period ending March 31, 2022.

Our management, with oversight from our Audit Committee, took steps to remediate the material weakness, which included designing and implementing a new control activity to manually review sub-ledger activity to completely identify and accurately account for intercompany and related party balances. Our management has assessed and concluded that this previously reported material weakness related to the identification and accounting for intercompany and related party transactions has been remediated as of December 31, 2023. We are committed to maintaining a strong internal control environment and we believe that these remediation efforts represent significant improvements in our controls. We monitored our processes throughout the remediation period and have concluded that they are operating effectively and are well controlled and sustainable. We will continue to focus on maintaining effective internal control over financial reporting and we will make enhancements when and where necessary.

Changes in Internal Control over Financial Reporting

There was no change in our internal control over financial reporting (as defined in Rule 13a-15(f) under the Exchange Act) that occurred during the quarter ended December 31, 2023, that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

Item 9B. Other Information

(b) 10b5-1 Trading Arrangements

During the three months ended December 31, 2023, no director or executive officer of the Company adopted, modified or terminated a “Rule 10b5-1 trading arrangement” or “non-Rule 10b5-1 trading arrangement,” as each term is defined in Item 408(a) of Regulation S-K.

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2024 Annual Meeting of Shareholders

The date for the Company’s 2024 annual meeting of shareholders will be May 14, 2024.

Item 9C. Disclosure Regarding Foreign Jurisdictions that Prevent Inspections

Not applicable.

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PART III

Item 10. Directors, Executive Officers and Corporate Governance

The information required by this Item, not already provided herein under Item 1. Business – Management, will be included in our Proxy Statement for the 2024 Annual Meeting of Shareholders (the “2024 Proxy Statement”). The 2024 Proxy Statement will be filed within 120 days after the close of the fiscal year ended December 31, 2023. Except as otherwise specifically incorporated by reference, our Proxy Statement is not deemed to be filed as part of this Annual Report.

Item 11. Executive Compensation

The information required by this Item will be included in the 2024 Proxy Statement. The 2024 Proxy Statement will be filed within 120 days after the close of the fiscal year ended December 31, 2023 and such information is incorporated herein by reference.

Item 12. Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters

The information required by this Item will be included in the 2024 Proxy Statement. The 2024 Proxy Statement will be filed within 120 days after the close of the fiscal year ended December 31, 2023 and such information is incorporated herein by reference.

Item 13. Certain Relationships and Related Transactions and Director Independence

The information required by this Item will be included in the 2024 Proxy Statement. The 2024 Proxy Statement will be filed within 120 days after the close of the fiscal year ended December 31, 2023 and such information is incorporated herein by reference.

Item 14. Principal Accounting Fees and Services

The information required by this Item will be included in the 2024 Proxy Statement. The 2024 Proxy Statement will be filed within 120 days after the close of the fiscal year ended December 31, 2023 and such information is incorporated herein by reference.

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PART IV

Item 15. Exhibits and Financial Statement Schedules

Documents filed with this report:

(1)	Financial Statements
	Report of Independent Registered Public Accounting Firm (PCAOB ID 238)
	Consolidated Statements of Net Income — years ended December 31, 2023, 2022 and 2021
	Consolidated Statements of Comprehensive Income — years ended December 31, 2023, 2022 and 2021
	Consolidated Balance Sheets — December 31, 2023 and 2022
	Consolidated Statements of Cash Flows — years ended December 31, 2023, 2022 and 2021
	Consolidated Statements of Changes in Equity — years ended December 31, 2023, 2022 and 2021
	Notes to Consolidated Financial Statements
(2)	Financial Statement Schedules
	All other schedules (Schedules I, II, III, IV and V) for which provision is made in the applicable accounting regulations of the SEC are not required under the related instruction, or are inapplicable and therefore have been omitted or the required information is shown in the consolidated financial statements or the accompanying notes to the consolidated financial statements.
(3)	Exhibits

Exhibit Index

Exhibit No.	Description
3.1	Amended and Restated Certificate of Incorporation of Atmus Filtration Technologies Inc. (incorporated by reference to Exhibit 3.1 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
3.2	Amended and Restated Bylaws of Atmus Filtration Technologies Inc. (incorporated by reference to Exhibit 3.2 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
4.1	Description of Securities of the Registrant (filed herewith).
10.1#	Separation Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.1 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.2#	Transition Services Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.2 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.3#	Tax Matters Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.3 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.4#	Employee Matters Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.4 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.5#	First-Fit Supply Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.5 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.6#	Aftermarket Supply Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.6 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).

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10.7#	Registration Rights Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.7 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.8#	Transitional Trademark License Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.8 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.9#	Intellectual Property License Agreement, dated as of May 29, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (incorporated by reference to Exhibit 10.9 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.10+	2022 Omnibus Incentive Plan (incorporated by reference to Exhibit 10.10 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.11	Credit Agreement, dated as of September 30, 2022, among FILT Red, Inc., Cummins Filtration Inc., the lenders party thereto, and Bank of America, N.A., as administrative agent (incorporated by reference to Exhibit 10.11 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.12	Amendment No. 1 to Credit Agreement, dated as of February 15, 2023, among Atmus Filtration Technologies Inc., Cummins Filtration Inc., the lenders party thereto, and Bank of America N.A., as administrative agent (incorporated by reference to Exhibit 10.12 to the Current Report on Form 8-K of Atmus Filtration Technologies Inc. filed with the Commission on June 1, 2023).
10.13+	Employment Transition and Release Agreement, effective as of August 26, 2022, among Mark J. Osowick, Cummins Inc., and Cummins Filtration Inc. (incorporated by reference to Exhibit 10.12 to Amendment No. 2 to the Registration Statement on Form S-1 of Atmus Filtration Technologies Inc. filed with the Commission on May 16, 2023).
10.14+	Form of Indemnification Agreement for Independent Directors (incorporated by reference to Exhibit 10.15 to Amendment No. 2 to the Registration Statement on Form S-1 of Atmus Filtration Technologies Inc. filed with the Commission on May 16, 2023).
10.15+	Restricted Stock Unit Award Agreement under the 2022 Omnibus Incentive Plan (Executive Officers) (filed herewith).
10.16+	Performance Stock Unit Award Agreement under the 2022 Omnibus Incentive Plan (Executive Officers) (filed herewith).
10.17+	Restricted Stock Unit Award Agreement under the 2022 Omnibus Incentive Plan (Non-Employee Directors) (filed herewith).
10.18+	Deferred Compensation Plan (filed herewith).
10.19+	Deferred Compensation Plan for Non-Employee Directors (filed herewith).
10.20+	Executive Severance Plan (filed herewith).
10.21+	Executive Change of Control Severance Plan (filed herewith).
10.22+	First Amendment to Separation Agreement, dated as of September 25, 2023, by and between Atmus Filtration Technologies Inc. and Cummins Inc. (filed herewith).
21	Subsidiaries of the Registrant (filed herewith).
23	Consent of PricewaterhouseCoopers LLP (filed herewith).
24	Power of Attorney (filed herewith).
31.1	Certification of the Chief Executive Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
31.2	Certification of the Chief Financial Officer pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 (filed herewith).
32.1	Certifications of the Chief Executive Officer and Chief Financial Officer pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (filed herewith).
97	Policy Relating to Recovery of Erroneously Awarded Compensation (filed herewith).
101.INS*	Inline XBRL Instance Document - the instance document does not appear in the Interactive Data File because its XBRL tags are embedded within the Inline XBRL document.
101.SCH*	Inline XBRL Taxonomy Extension Schema Document.
101.CAL*	Inline XBRL Taxonomy Extension Calculation Linkbase Document.
101.DEF*	Inline XBRL Taxonomy Extension Definition Linkbase Document.
101.LAB*	Inline XBRL Taxonomy Extension Label Linkbase Document.
101.PRE*	Inline XBRL Taxonomy Extension Presentation Linkbase Document.

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104	Cover Page Interactive Data File (embedded with the Inline XBRL Document).
+	Identifies each management contract or compensatory plan or arrangement.
#	Certain exhibits and schedules have been omitted pursuant to Item 601(a)(5) of Regulation S-K. The registrant hereby undertakes to furnish supplementally a copy of any omitted exhibit or schedule upon request by the Commission.
*	Filed with this annual report on Form 10-K are the following materials formatted in iXBRL (Inline Extensible Business Reporting Language): (i) the Consolidated Statements of Net Income for the years ended December 31, 2023, 2022 and 2021, (ii) the Consolidated Statements of Comprehensive Income for the years ended December 31, 2023, 2022 and 2021, (iii) the Consolidated Balance Sheets at December 31, 2023 and December 31, 2022, (iv) the Consolidated Statements of Cash Flows for the years ended December 31, 2023, 2022 and 2021, (v) the Consolidated Statements of Changes in Equity for the years ended December 31, 2023, 2022 and 2021, and (vi) Notes to Consolidated Financial Statements.

Item 16. Form 10-K Summary

None.

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SIGNATURES

Pursuant to the requirements of Section 13 or 15(d) of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned, thereunto duly authorized, on February 14, 2024.

ATMUS FILTRATION TECHNOLOGIES INC.
By	/s/ Jack M. Kienzler
	Jack M. Kienzler
	Chief Financial Officer and Chief Accounting Officer
	(Principal Financial Officer)

Pursuant to the requirements of the Securities Exchange Act of 1934, this report has been signed below by the following persons on behalf of the Registrant and in the capacities indicated, on February 14, 2024.

Signature	Title
/s/ Stephanie J. Disher	Chief Executive Officer (Principal Executive Officer) and Director
Stephanie J. Disher
*
Sharon Barner	Director
*
R. Edwin Bennett	Director
*
Cristina Burrola	Director
*
Gretchen Haggerty	Director
*
Jane Leipold	Director
*
Stephen Macadam	Director
*
Earl Newsome	Director
*
Tony Satterthwaite	Director
*
Mark Smith	Director
*
Nathan Stoner	Director

*By	/s/ Toni Y. Hickey
	Toni Y. Hickey
	Attorney-in-fact

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