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CACI INTERNATIONAL INC

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0000256883_2 R1.0.0.51160 Before You Vote How to Access the Proxy Materials ProxyMaterialsAvailabletoVIEWorRECEIVE:1.Notice&ProxyStatement2.AnnualReport3.Form10-KHowtoViewOnline:Havetheinformationthatisprintedintheboxmarkedbythearrowfollowingpage)andvisit:www.proxyvote.com.HowtoRequestandReceiveaPAPERorE-MAILCopy:(locatedontheIfyouwanttoreceiveapaperore-mailcopyofthesedocuments,youmustrequestone.ThereisNOchargeforrequestingacopy.Pleasechooseoneofthefollowingmethodstomakeyourrequest:1)BYINTERNET:www.proxyvote.com2)BYTELEPHONE:1-800-579-16393)BYE-MAIL*:sendmaterial@proxyvote.com*Ifrequestingmaterialsbye-mail,pleasesendablanke-mailwiththeinformationthatisprintedintheboxmarkedbythearrow(locatedonthefollowingpage)inthesubjectline.Requests,instructionsandotherinquiriessenttothise-mailaddresswillNOTbeforwardedtoyourinvestmentadvisor.PleasemaketherequestasinstructedaboveonorbeforeNovember05,2015tofacilitatetimelydelivery.HowToVotePleaseChooseOneoftheFollowingVotingMethodsVote In Person: Many shareholder meetings have attendance requirements including, but not limited to, the possession of an attendance ticket issued by the entity holding the meeting. Please check the meeting materials for any special requirements for meeting attendance. At the meeting, you will need to request a ballot to vote these shares. Vote By Internet: To vote now by Internet, go to www.proxyvote.com. Have the information that is printed in the box marked by the arrow available and follow the instructions. Vote By Mail: You can vote by mail by requesting a paper copy of the materials, which will include a proxy card

Vo t in g items The Board of Directors recommends you vote FOR the following: 1. Election of Directors Nominees 01 Kenneth Asbury 02 Michael A. Daniels 03 James S. Gilmore, III 04 William L. Jews 05 Gregory G. Johnson 06 J. Phillip London 07 James L. Pavitt 08 Warren R. Phillips 09 Charles P. Revoile 10 William S. Wallace The Board of Directors recommends you vote FOR proposals 2. and 3. 2. Advisory approval of the Company's executive compensation; 3. To ratify the appointment of Ernst & Young LLP as the Company's independent registered public accounting firm for fiscal year 2016. NOTE: Such other business as may properly come before the meeting or any adjournment thereof. 0000256883_3 R1.0.0.51160