Madison Dearborn Partners, a private equity investment firm, agreed to acquire a majority stake in Unison, a provider of procurement, supply chain, and contract management software, from Carlyle. Financial terms were not disclosed. “We are thrilled to welcome our new partners from MDP and look forward to their support as we continue to execute our strategy to provide innovative and reliable software solutions for federal organizations and government contractors. MDP brings a wealth of experience and additional financial resources that will allow Unison to accelerate our growth and deliver world-class software products to meet the evolving needs of our customers. MDP’s track record of successful partnerships with vertical enterprise software, procurement and supply chain, and government services and technology companies will greatly benefit Unison as we enter this pivotal new chapter in Unison’s history," Reid Jackson, Unison CEO.