X0303 4 2010-05-25 0000023082 COMPUTER SCIENCES CORP CSC 0001218072 DEBUCK DONALD G 3170 FAIRVIEW PARK DRIVE FALLS CHURCH VA 22042 1 Vice President and Controller Options (rights to buy) 48.22 2010-05-25 4 A 0 15695 0 A 2011-05-25 2020-05-25 Common Stock 15695 15695 D Restricted Stock Units 2010-05-25 4 A 0 3959 0 A Common Stock 3959 3959 D Restricted Stock Units 2010-05-25 4 A 0 2871 0 A Common Stock 2871 6830 D This option will become exercisable in three equal installments beginning May 25, 2011. Each Restricted Stock Unit (RSU) entitles the reporting person to receive one share of common stock upon the vesting date. The RSUs vest 100% on May 25, 2013. Each Restricted Stock Unit (RSU) entitles the reporting person to receive one share of common stock upon the vesting date. The RSUs vest at age 65, or at age 55 with ten continuous years of service and may vest earlier under certain other circumstances. They are released as shares of common stock at the rate of 10% of the shares granted on each of the first ten anniversaries of the retirement date. M. Louise Turilli, Attorney-In-Fact 2010-05-27