Peak Rock Capital, a middle-market private investment firm, completed the acquisition AMB, a manufacturer of rigid and flexible films for use in food packaging. financial terms were not disclosed. "The investment by Peak Rock is another huge step in our growth plans, perhaps the largest in our Company's history. Over the past 50 years, AMB has become a leader in its space through innovation, talented people and an unwavering focus on our defined vision. Peak Rock has been an active investor in our market historically and truly understands not only our business but the future growth potential of the industry," Bruno Marin, AMB CEO.