HERNDON, Va. — (BUSINESS WIRE) — October 13, 2011 — 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 third quarter 2011 financial results on Wednesday, October 26, 2011 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 18426391. 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 November 2, 2011 by dialing 1-855-859-2056 in North America and 1-404-537-3406 outside North America, reference passcode 18426391. The replay also will be available through November 9, 2011 on Deltek’s website.

About Deltek

Deltek (Nasdaq: PROJ) is the leading global provider of enterprise software and information solutions for government contractors and professional services firms. For decades, we have delivered actionable insight that empowers our customers to unlock their business potential. Over 14,500 organizations in approximately 80 countries around the world use Deltek to research and identify opportunities, win new business, optimize resources, streamline operations, and deliver profitable projects. Deltek – Know more. Do more.^®  www.deltek.com.