GTCR Completes Sale of Six3 Systems to CACI

Deal Reinforces Value of GTCR’s Leaders Strategy™

Chicago, IL — November 15, 2013

GTCR, a leading private equity firm, announced today it has completed the previously announced sale of its portfolio company, Six3 Systems (“Six3″), to CACI International Inc (NYSE: CACI, “CACI”), a leading provider of information solutions and services to government customers, for $820 million.

Headquartered in McLean, Virginia, Six3 is a high-end national security and defense intelligence services provider focused on developing and acquiring specialized capabilities that cater to the intelligence community, Department of Defense and civilian security agencies. Six3 was formed in July 2009 by industry veteran Bob Coleman in partnership with GTCR. Through a series of four acquisitions, Six3 has established a strong presence in the areas of intelligence surveillance and reconnaissance, intelligence operations and cyber security.

Goldman, Sachs & Co. and J.P. Morgan Securities LLC served as Six3′s financial advisors and Kirkland & Ellis LLP provided legal counsel.

About GTCR
Founded in 1980, GTCR is a leading private equity firm focused on investing in growth companies in the Financial Services & Technology, Healthcare and Information Services & Technology industries. The Chicago-based firm pioneered The Leaders Strategy™ – finding and partnering with management leaders in core domains to identify, acquire and build market-leading companies through transformational acquisitions and organic growth. Since its inception, GTCR has invested more than $10 billion in over 200 companies. For more information, please visit www.gtcr.com.

About Six3 Systems, Inc.
Six3 provides strategic solutions to U.S. Government agencies in the Intelligence, Defense, and Civilian communities. Six3’s mission is to provide subject matter expertise and strategic solutions for national security agencies and critical missions. For more information, please visit www.six3systems.com.

About CACI
CACI provides information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. A member of the Fortune 1000 Largest Companies and the Russell 2000 Index, CACI provides dynamic careers for approximately 15,000 employees working in over 120 offices worldwide. Visit www.caci.com.

Media inquiries:
Eileen Rochford
(312) 953-3305
eileenr@theharbingergroup.com