Private equity firm, Truelink Capital, has entered into a definitive agreement to sell Koch Filter Corporation, a subsidiary of Air Distribution Technologies, to Atmus Filtration Technologies.
The USD$450 million transaction is expected to close in the first quarter of 2026.
Founded in 1966, Koch Filter designs and manufactures air filtration products serving a broad set of commercial markets.
The company offers an end-to-end portfolio of highly consumable products including pleated filters, high efficiency filters, and HEPA filters that are used for a diverse set of applications.
With manufacturing operations in Louisville, KY, East Greenville, PA, Houston, TX, and Mira Loma, CA, Koch Filter is one of the only nationwide independent scaled platforms in the air filtration space.
The sale of Koch Filter will allow for the continued strategic growth of the company as Atmus' commitment to innovation and operational excellence ensures that Koch Filter's team will have the resources and opportunities to thrive, while continuing to deliver value to customers and partners, according to Todd Golditch, co-founder and managing partner of Truelink.
"This transaction is a significant milestone for both Koch Filter and ADT,” he said.
“This sale is a testament to the strength of our investment and value creation strategy and aligns with our long-term vision for ADT to strategically focus their portfolio around engineered air distribution solutions, while enabling Koch Filter to thrive with Atmus.
“We are proud to have partnered with and invested behind Mark Mattingly and the rest of Koch Filter's management team and look forward to their continued success under new ownership."
Koch Filter CEO, Mark Mattingly, said the company is well positioned to accelerate growth and continue delivering innovative, high-quality filtration solutions to the market.
“Joining Atmus will mark an exciting new chapter for our business, our employees, and our customers,” he said.
ADT was acquired by Truelink Capital in 2024 through a corporate carve-out from Johnson Controls International.
Atmus employs approximately 4,500 people globally.