Kelso & Company, a private equity investment firm, completed the acquisition of a stake in WilliamsMarston, an accounting advisory and management consulting firm, from Align Capital Partners, a growth-oriented private equity firm. Financial terms were not disclosed. “Together with WM leadership, we significantly exceeded our investment objectives. The WM team has been an outstanding partner for ACP and our investors, and we are incredibly appreciative of their efforts and accomplishments over the past two years. The Firm has achieved remarkable growth while maintaining its steadfast commitment to its brand, clients and people. All of us at ACP are excited to watch WM’s continued growth and success," Chris Jones, Align Capital Managing Partner.