X0303 4 2008-12-29 0 0001143363 SI INTERNATIONAL INC SINT 0001349089 Stowers Marylynn 12012 SUNSET HILLS ROAD SUITE 800 RESTON VA 20190 0 1 0 0 Executive Vice President Common Stock 2008-12-29 4 D 0 8500 32.00 D 0 D Employee Stock Option (Right to Buy) 30.57 2008-12-29 4 D 0 41729 1.43 D 2015-12-30 Common Stock 41729 0 D Employee Stock Option (Right to Buy) 30.57 2008-12-29 4 D 0 3271 1.43 D 2015-12-30 Common Stock 3271 0 D Employee Stock Option (Right to Buy) 23.55 2008-12-29 4 D 0 9000 8.45 D 2018-02-22 Common Stock 9000 0 D Employee Stock Option (Right to Buy) 28.61 2008-12-29 4 D 0 6500 3.39 D 2016-08-04 Common Stock 6500 0 D Employee Stock Option (Right to Buy) 28.22 2008-12-29 4 D 0 5000 3.78 D 2017-03-07 Common Stock 5000 0 D Disposed of in connection with the merger (the "Merger") of Matador Acquisition Corporation, a Delaware corporation ("Merger Sub"), with and into the issuer, as contemplated by that certain Agreement and Plan of Merger by and among the issuer, Serco Group plc, a public limited company organized under the laws of England and Wales, Serco Inc., a New Jersey corporation and Merger Sub, dated as of August 26, 2008. In connection with the Merger, the shares of common stock listed were exchanged for the right to receive $32.00 per share in cash. This option, which fully vested on December 31, 2005, was canceled in the Merger in exchange for a cash payment of $59,672.47, representing an amount equal to the number of shares of common stock underlying the option multiplied by the difference between the per share exercise price and the per share merger consideration of $32.00. This option, which fully vested on December 31, 2005, was canceled in the Merger in exchange for a cash payment of $4,677.53, representing an amount equal to the number of shares of common stock underlying the option multiplied by the difference between the per share exercise price and the per share merger consideration of $32.00. This option, which provided for vesting in five equal annual installments beginning on February 22, 2009, was canceled in the Merger in exchange for a cash payment of $76,050.00, representing an amount equal to the number of shares of common stock underlying the option multiplied by the difference between the per share exercise price and the per share merger consideration of $32.00. This option, which provided for vesting in five equal annual installments beginning on August 4, 2007, was canceled in the Merger in exchange for a cash payment of $22,035.00, representing an amount equal to the number of shares of common stock underlying the option multiplied by the difference between the per share exercise price and the per share merger consideration of $32.00. This option, which provided for vesting in five equal annual installments beginning on March 7, 2008, was canceled in the Merger in exchange for a cash payment of $18,900.00, representing an amount equal to the number of shares of common stock underlying the option multiplied by the difference between the per share exercise price and the per share merger consideration of $32.00. James E. Daniel by Power of Attorney 2008-12-31