HERNDON, Va. — (BUSINESS WIRE) — April 12, 2012 — Deltek, Inc. (Nasdaq: PROJ), the leading global provider of enterprise software and information solutions for government contractors and professional services firms, announced today that it will release its first quarter 2012 financial results on Thursday, April 26, 2012 after market close. The Company will host a conference call at 5:00 p.m. EDT that day to discuss these results.

The dial-in number for the conference call is 1-877-381-6419 in North America and 1-706-643-9496 outside North America, reference passcode 71804334. The conference call also can be accessed through the Investor Relations section of Deltek’s website ( http://investor.deltek.com). Those unable to participate in the live call may hear a replay through May 3, 2012 by dialing 1-855-859-2056 in North America and 1-404-537-3406 outside North America, reference passcode 71804334. The replay also will be available through May 25, 2012 on Deltek’s website.

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 1.9 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