Kelso & Company, a firm specializing in private equity investing, completed the acquisition of the majority stake in Inmark, distributor of rigid container and life sciences packaging, from Quad-C, a private equity firm. Financial terms were not disclosed. “We have assembled an extraordinary team whose commitment to product innovation and customer service has set us apart across the wide range of industries we serve. We are very pleased to begin a new partnership with Kelso. Their industry knowledge and financial support will allow us to continue providing world class service to our customers, while capitalizing on the significant growth opportunities that exist in our markets," Harry Franze, Inmark CEO.