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Chicago-based private equity firm Wynnchurch Capital, L.P. sold a majority interest in engineered wood products manufacturer Rosboro Holdings to One Equity Partners (OEP). Springfield, Ore.-based Rosboro manufactures engineered products, including stock and custom glued laminated timber and lumber used in residential and light commercial construction end markets. Under the terms of the sale, Wynnchurch will continue to own a significant minority stake in Rosboro.

“Rosboro represented an opportunity to invest in a company with a leading market position differentiated product offering and long-standing customer relationships,” Brian Crumbaugh, partner at Wynnchurch, said in a prepared statement. “We are proud of the management team’s accomplishments during our ownership period and are excited to continue our partnership with management during Rosboro’s next phase of growth.”

Additional details about the transaction were not publicly disclosed. Wynnchurch first invested in Rosboro in 2016, allowing the building products manufacturer to expand and improve operations, according to the private equity firm.

“Wynnchurch has been a great partner and provided tremendous support during their ownership. They have helped drive continuous improvement across our operations and execute on multiple organic and inorganic growth initiatives,” Rich Babcock, CEO of Rosboro, said. “We are excited to partner with both OEP and Wynnchurch as we look to execute on our long-term growth initiatives.”

OEP was founded in 2001 and spun out of JP Morgan in 2015. The firm has offices in New York, Chicago, and Frankfurt, Germany.