X0303 4 2008-12-09 0 0000894253 PEROT SYSTEMS CORP PER 0001199359 ALTABEF PETER 2300 WEST PLANO PARKWAY PLANO TX 75075 1 1 0 0 President and CEO Common Stock 2008-12-09 4 F 0 1458 12.52 D 435935 D Common Stock 2535 I By Managed Account Upon vesting of restricted stock units, Grantee elected to satisfy tax obligation by withholding sufficient shares to pay taxes, and Perot Systems paid the value of those shares to federal and medicare tax authorities on behalf of Grantee. Shares held in managed individual retriement account By Rex C. Mills, by Power of Attorney for Peter A. Altabef 2008-12-11