Multiple external parties were involved in the planning and execution of this transaction. Greenhill & Co. acted as lead advisor and facilitator throughout the process, and Fried, Frank, Harris, Shriver & Jacobson served as a legal advisor to Deltek. Credit Suisse Group AG also acted as an advisor.Jefferies & Company, Inc. served as lead financial advisor to Thoma Bravo, and Jefferies Finance LLC and RBC Capital Markets provided financing commitments to the firm. Kirkland & Ellis LLP served as legal advisor to Thoma Bravo. About Deltek Deltek (Nasdaq: PROJ) is the leading global provider of enterprise software and information solutions for professional services firms and government contractors. For decades, we have delivered actionable insight that empowers our customers to unlock their business potential. 15,000 organizations and 2 million users in over 80 countries around the world rely on Deltek to research and identify opportunities, win new business, optimize resources, streamline operations, and deliver more profitable projects. Deltek – Know more. Do more. ® www.deltek.com About Thoma Bravo, LLC Thoma Bravo is a leading private equity investment firm building on a 30+ year history of providing equity and strategic support to experienced management teams and growing companies. The firm has continued to apply the concept of industry consolidation investing, which seeks to create value through the strategic use of acquisitions to accelerate business growth. Thoma Bravo invests across multiple industries, with a particular focus in enterprise and infrastructure software and financial and business services, and works in partnership with management to implement its operating and consolidation expertise to build long-term value. The firm currently manages a series of private equity funds representing almost $4 billion of equity commitments. In software, Thoma Bravo has completed 54 add-on acquisitions across 23 platform companies with total annual earnings of approximately $1 billion. For more information, visit www.thomabravo.com. About New Mountain Capital LLC New Mountain Capital is a New York‐based private equity firm that emphasizes business building and growth, rather than debt, as it pursues long‐term capital appreciation. The firm currently manages private and public equity funds with approximately $9 billion in aggregate capital commitments. New Mountain seeks out the highest‐quality growth leaders in carefully selected industry sectors and then works intensively with management to build the value of these companies. For more information, please visit www.newmountaincapital.com.