AEA Investors and BCI Acquire Rensa Filtration

Positions Rensa to Expand Customer and Channel Relationships, Advance Strategic Acquisitions and Strengthen Its Leadership in Mission-Critical Air Filtration Across the U.S. and Europe

NEW YORK and AURORA, Ill., Oct. 8, 2026 /PRNewswire/ -- AEA Investors' ("AEA") Middle Market Private Equity team ("AEA MMPE") and British Columbia Investment Management Corporation ("BCI") today announced that they have acquired Rensa Filtration ("Rensa" or the "Company"), a leading vertically integrated provider of highly engineered air filtration solutions for mission-critical applications, including data centers, power generation, semiconductor, healthcare, and life sciences from Audax Private Equity ("Audax"). Audax will retain a minority stake in the business alongside Rensa's management, reflecting their continued confidence in the Company's long-term growth strategy. Terms of the transaction were not disclosed.

Founded by Brandon Ost in 2017 and headquartered in Aurora, Illinois, Rensa is one of the largest U.S.-based privately held filtration companies. Rensa's model combines proprietary media manufacturing, technical expertise, local service capabilities and deep customer and channel relationships, enabling the Company to provide full lifecycle solutions and continuously evolve to meet customer needs. Since 2017, Rensa has continued to expand its coverage and capabilities by partnering with founders and management teams looking to grow their businesses as part of a larger, well-resourced organization. AEA and BCI will support Rensa's management team as they continue to broaden their footprint and add complementary capabilities across North America and Europe, both organically and via acquisitions.

"We founded Rensa to serve as a technical partner customers can rely on to solve their most demanding filtration challenges, with the capabilities to respond locally and deliver reliably when performance matters most," said Brandon Ost, Founder and Chief Executive Officer of Rensa. "Our employees and the businesses that have joined Rensa have been central to our growth. With AEA and BCI, we can invest further in engineering and manufacturing capabilities, extend our value-added service and distribution network, and welcome additional businesses to our platform."

"The modern economy requires highly controlled environments across complex digital and manufacturing processes. Brandon and his team have built a differentiated filtration platform with a strong track record of meeting customer needs across applications," said Vinay Kumar, Partner at AEA Investors.

"Rensa's unique operating model and strong customer relationships create a solid foundation for continued growth. We are pleased to partner with AEA, Brandon, and the rest of the Rensa team to support the company's next phase of growth," said Jon Salon, Executive Vice President & Global Head, Private Equity at BCI.

About Rensa Filtration

Rensa is a leading designer, manufacturer and provider of highly engineered, consumable air filtration solutions that help protect people, processes and equipment in critical environments and applications. Its end-to-end platform spans proprietary filtration media, filter design and manufacturing, and value-added distribution and services, enabling Rensa to deliver specialized products, technical expertise and responsive local support throughout the filtration lifecycle. Rensa serves a diversified customer base across data centers, healthcare and life sciences, advanced manufacturing, industrial, power generation, commercial and other essential end markets through a growing network of manufacturing and service locations across North America and Europe. For more information, visit rensafiltration.com or follow us on LinkedIn.

About AEA Investors

AEA Investors ("AEA") is a leading global alternative investment firm that has partnered with exceptional middle-market businesses for over 55 years. With a diversified suite of investment strategies spanning private equity and private credit, AEA has established itself as a trusted provider of comprehensive solutions to the middle market. Since its founding by the Rockefeller, Mellon, and Harriman family interests and S.G. Warburg & Co. in 1968, AEA has built an extraordinary network of investors, business leaders, operators, and advisors and a rich institutional knowledge base. Today, the firm manages approximately $19 billion in assets and operates through collaborative teams of skilled professionals around the world. Leveraging its deep expertise, extensive network, and robust resources, AEA seeks to deliver sustainable, long-term value. For more information, visit www.aeainvestors.com.

About BCI

BCI is one of Canada's largest institutional investors, with C$313.7 billion in gross assets under management as of March 31, 2026. BCI has built its legacy on performance with purpose, helping its 33 public sector and institutional clients deliver on their commitments. From securing pensions to supporting communities, it's investing that matters. Headquartered in Victoria, British Columbia, and with teams spanning Vancouver, New York, London, and Mumbai, BCI puts patient capital to work across public and private markets globally. Learn more at BCI.ca or LinkedIn.

Media Contacts
Heidi DuBois (AEA Investors)
(212) 644 5900
[email protected] 

Kate Thompson / Madeline Jones / Kate Kelley
Joele Frank, Wilkinson Brimmer Katcher
(212) 355-4449

Olga Petrycki (BCI)
(778) 410 7310
[email protected]

SOURCE AEA Investors