New Mountain Finance announced today that it has commenced an underwritten primary offering of 3M shares of its common stock and a concurrent underwritten secondary offering of 3M shares of its common stock on behalf of a selling stockholder, New Mountain Finance AIV Holdings Corporation. The joint-lead book-running managers for the offering are Goldman, Sachs & Co., Wells Fargo Securities, LLC and Morgan Stanley & Co. LLC. The co-lead managers for the offering are Robert W. Baird & Co. Incorporated and Keefe, Bruyette & Woods, Inc. The co-managers are BB&T Capital Markets, a division of BB&T Securities, LLC, Janney Montgomery Scott LLC and Oppenheimer & Co. Inc.