CACI International to Release 2nd Quarter FY16 Earnings After Market Close on February 3, 2016

To Hold Conference Call and Webcast Before Market Open on February 4, 2016

CACI International Inc (NYSE MKT: CACI) will issue second quarter FY16 results at 4:15 pm Eastern Time on Wednesday, February 3, 2016. Following the release of this information, we have scheduled a conference call for Thursday, February 4, 2016 at 8:30 am Eastern Time. Our release and conference call are taking place on these dates after the expected closing of the acquisition of L-3 National Security Solutions, Inc. on February 1, 2016. During the conference call, members of our senior management team will be making a brief presentation focusing on second quarter FY16 and updated FY16 annual guidance followed by a question-and-answer session to discuss our results and our future performance expectations.

You can listen to the conference call and view accompanying exhibits over the Internet by logging on to CACI’s website at www.caci.com at the scheduled time. You may also dial in to 1-888-771-4371, confirmation code 41539249. Slides of the presentation will be available on our website during the call. A replay of the call will also be available over the Internet, and can be accessed through CACI’s website (www.caci.com).

CACI provides information solutions and services in support of national security missions and government transformation for Intelligence, Defense, and Federal Civilian customers. A Fortune magazine World’s Most Admired Company in the IT Services industry, CACI is a member of the Fortune 1000 Largest Companies, the Russell 2000 Index, and the S&P SmallCap600 Index. CACI provides dynamic careers for over 16,300 employees in 120 offices worldwide. Visit www.caci.com.

CACI-Financial

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CACI International IncCorporate Communications and Media:Jody BrownExecutive Vice President, Public Relations(703) [e-mail] Relations:David DragicsSenior Vice President, Investor Relations(866) [e-mail]