Atmus Filtration Acquires Koch Filter for $450M
Written by Emily J. Thompson, Senior Investment Analyst
Updated: Nov 24 2025
0mins
Should l Buy ATMU?
Source: SeekingAlpha
Atmus Filtration Technologies Inc has announced a definitive agreement to acquire Koch Filter Corporation for $450 million in cash, expected to close in Q1 2026.
This acquisition will allow Atmus to expand its presence in the rapidly growing air filtration markets, including industrial and commercial HVAC, data centers, and power generation. Koch Filter generated $156 million in revenue for the fiscal year 2025, and the purchase price represents a 13.9x multiple of its Adjusted EBITDA.
Atmus CEO Steph Disher emphasized that this acquisition will enhance operational excellence and innovation, leveraging Koch Filter's established customer relationships to accelerate growth.
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Analyst Views on ATMU
Wall Street analysts forecast ATMU stock price to rise
5 Analyst Rating
4 Buy
1 Hold
0 Sell
Strong Buy
Current: 58.460
Low
54.00
Averages
60.00
High
64.00
Current: 58.460
Low
54.00
Averages
60.00
High
64.00
About ATMU
Atmus Filtration Technologies Inc. is engaged in filtration and media solutions. The Company designs and manufactures advanced filtration products, principally under the Fleetguard brand, that enable lower emissions and provide superior asset protection. It serves customers across the truck, bus, agriculture, construction, mining, marine and power generation vehicle, and equipment markets, along with providing comprehensive aftermarket support and solutions. Its products include fuel filters, lube filters, air filters, crankcase ventilation, hydraulic filters and coolants and other chemicals. It offers products for first fit and aftermarket applications to original equipment manufacturers, dealers/distributors, and end-users. The Company produces and sells Fleetguard branded products across North America, Europe, South America, Asia, Australia, and the African continents. Its Fleetguard branded products are available through distribution centers worldwide.
About the author
Emily J. Thompson
Emily J. Thompson, a Chartered Financial Analyst (CFA) with 12 years in investment research, graduated with honors from the Wharton School. Specializing in industrial and technology stocks, she provides in-depth analysis for Intellectia’s earnings and market brief reports.
Port Capital Increases Stake in Atmus Filtration Technologies
- Increased Holdings: Port Capital LLC reported an increase of 446,260 shares in Atmus Filtration Technologies as of February 17, 2026, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential.
- Quarter-End Value Growth: As of December 31, 2025, the value of Port Capital's position in Atmus rose by $26.10 million, indicating the dual impact of trading activity and price movements, bringing its stake to 1.96% of reported assets under management.
- Strong Market Performance: As of March 9, 2026, Atmus Filtration's stock was priced at $58.21, representing a 55.7% increase over the past year, with a 36 percentage point alpha over the S&P 500, showcasing its robust performance in the heavy asset sector.
- Strategic Acquisition: Atmus, spun off from Cummins in 2023, acquired Koch Filter for $450 million, entering the rapidly growing air filtration market, particularly in data centers and power generation, thereby solidifying its market position and laying the groundwork for future growth.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Stake Increase: Port Capital LLC filed with the SEC on February 17, 2026, revealing an increase of 446,260 shares in Atmus Filtration Technologies, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential and investment strategy.
- Value Growth: The value of Atmus Filtration's position rose by $26.10 million at quarter-end, indicating a positive impact from both share purchases and price changes, which further solidifies Port Capital's investment stance in the company.
- Market Performance: As of March 9, 2026, Atmus Filtration shares were priced at $58.21, up 55.7% over the past year, with a one-year alpha of 36 percentage points compared to the S&P 500, showcasing its strong market performance.
- Strategic Acquisition: Atmus's recent $450 million acquisition of Koch Filter allows entry into the rapidly growing air filtration market, particularly in data centers and power generation, indicating the company's strategy to leverage AI trends for new growth opportunities and enhance its competitive edge.
See More
Stocks Recover Losses from Iran
- Market Reaction: The S&P 500 index has returned to its previous levels prior to the attacks in Iran.
- Impact of Events: The market's recovery indicates resilience despite geopolitical tensions.
See More
Trade Court Clears Path for Widespread Tariff Reimbursements
Court Ruling: A judge in the Court of International Trade ordered Customs and Border Protection to refund tariffs imposed under the International Emergency Economic Powers Act.
Implications for Importers: This ruling, stemming from a case brought by Atmus Filtration, may lead to refunds for other importers affected by similar tariff impositions.
See More
Trade Court Clears Path for Extensive Tariff Refunds, Described as a 'Significant Development.'
- Court Ruling: A judge in the Court of International Trade has ordered Customs and Border Protection to issue refunds for tariffs imposed under the International Emergency Economic Powers Act.
- Plaintiff: The case was brought forward by Atmus Filtration, highlighting issues related to tariff enforcement and economic powers.
See More
Atmus Filtration Technologies Q4 2025 Earnings Call Insights
- Acquisition Success: Atmus completed the acquisition of Koch Filter, establishing a new Industrial Solutions segment that is expected to accelerate growth, with plans to report two business segments in 2026: Power Solutions and Industrial Solutions.
- Sales Growth: Fourth-quarter sales reached $447 million, a 9.8% increase year-over-year, primarily driven by a 5% price increase and 4% higher volumes, demonstrating the company's strong market performance.
- Shareholder Returns: In 2025, Atmus returned $78 million to shareholders, including $61 million in share buybacks and $17 million in dividends, with plans for an additional $20 million to $40 million in buybacks in 2026.
- Future Outlook: Management projects total revenue for 2026 to range from $1.945 billion to $2.015 billion, reflecting an expected growth of 10% to 14%, while adjusted EBITDA margins are anticipated to be between 19.5% and 20.5%, indicating confidence in future performance.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Increased Holdings: Port Capital LLC reported an increase of 446,260 shares in Atmus Filtration Technologies as of February 17, 2026, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential.
- Quarter-End Value Growth: As of December 31, 2025, the value of Port Capital's position in Atmus rose by $26.10 million, indicating the dual impact of trading activity and price movements, bringing its stake to 1.96% of reported assets under management.
- Strong Market Performance: As of March 9, 2026, Atmus Filtration's stock was priced at $58.21, representing a 55.7% increase over the past year, with a 36 percentage point alpha over the S&P 500, showcasing its robust performance in the heavy asset sector.
- Strategic Acquisition: Atmus, spun off from Cummins in 2023, acquired Koch Filter for $450 million, entering the rapidly growing air filtration market, particularly in data centers and power generation, thereby solidifying its market position and laying the groundwork for future growth.
See More
Port Capital Increases Stake in Atmus Filtration Technologies
- Stake Increase: Port Capital LLC filed with the SEC on February 17, 2026, revealing an increase of 446,260 shares in Atmus Filtration Technologies, with an estimated transaction value of $21.60 million, reflecting confidence in the company's growth potential and investment strategy.
- Value Growth: The value of Atmus Filtration's position rose by $26.10 million at quarter-end, indicating a positive impact from both share purchases and price changes, which further solidifies Port Capital's investment stance in the company.
- Market Performance: As of March 9, 2026, Atmus Filtration shares were priced at $58.21, up 55.7% over the past year, with a one-year alpha of 36 percentage points compared to the S&P 500, showcasing its strong market performance.
- Strategic Acquisition: Atmus's recent $450 million acquisition of Koch Filter allows entry into the rapidly growing air filtration market, particularly in data centers and power generation, indicating the company's strategy to leverage AI trends for new growth opportunities and enhance its competitive edge.
See More
Stocks Recover Losses from Iran
- Market Reaction: The S&P 500 index has returned to its previous levels prior to the attacks in Iran.
- Impact of Events: The market's recovery indicates resilience despite geopolitical tensions.
See More
Trade Court Clears Path for Widespread Tariff Reimbursements
Court Ruling: A judge in the Court of International Trade ordered Customs and Border Protection to refund tariffs imposed under the International Emergency Economic Powers Act.
Implications for Importers: This ruling, stemming from a case brought by Atmus Filtration, may lead to refunds for other importers affected by similar tariff impositions.
See More
Trade Court Clears Path for Extensive Tariff Refunds, Described as a 'Significant Development.'
- Court Ruling: A judge in the Court of International Trade has ordered Customs and Border Protection to issue refunds for tariffs imposed under the International Emergency Economic Powers Act.
- Plaintiff: The case was brought forward by Atmus Filtration, highlighting issues related to tariff enforcement and economic powers.
See More
Atmus Filtration Technologies Q4 2025 Earnings Call Insights
- Acquisition Success: Atmus completed the acquisition of Koch Filter, establishing a new Industrial Solutions segment that is expected to accelerate growth, with plans to report two business segments in 2026: Power Solutions and Industrial Solutions.
- Sales Growth: Fourth-quarter sales reached $447 million, a 9.8% increase year-over-year, primarily driven by a 5% price increase and 4% higher volumes, demonstrating the company's strong market performance.
- Shareholder Returns: In 2025, Atmus returned $78 million to shareholders, including $61 million in share buybacks and $17 million in dividends, with plans for an additional $20 million to $40 million in buybacks in 2026.
- Future Outlook: Management projects total revenue for 2026 to range from $1.945 billion to $2.015 billion, reflecting an expected growth of 10% to 14%, while adjusted EBITDA margins are anticipated to be between 19.5% and 20.5%, indicating confidence in future performance.
See More
