X0202 4 2005-08-24 0001000753 ADMINISTAFF INC \DE\ ASF 0001055604 ARIZPE ARTHUR A 19001 CRESCENT SPRINGS DRIVE KINGWOOD TX 77339 0 1 0 0 Exec VP, Client Services & COO Common Stock 2005-08-24 4 X 0 3600 4.02 A 27958.542 D Common Stock 2005-08-24 4 X 0 14619 6.24 A 42577.542 D Common Stock 2005-08-24 4 S 0 18219 33.24 D 24358.542 D Employee Stock Option (right to buy) 4.02 2005-08-24 4 X 0 3600 D 2012-10-04 Common Stock 3600 0 D Employee Stock Option (right to buy) 6.24 2005-08-24 4 X 0 14619 D 2013-04-04 Common Stock 14619 0 D Includes 43.446 shares purchased through the Employee Stock Purchase Plan. The options became exercisable in five equal annual installments beginning on October 4, 2003. On February 18, 2005, the Compensation Committee of the Board of Directors of Administaff accelerated the vesting of the remaining unvested options. Employee stock options have no purchase or sale price. The options became exercisable in five equal annual installments beginning on April 4, 2004. On February 18, 2005, the Compensation Committee of the Board of Directors of Administaff accelerated the vesting of the remaining unvested options. /s/ John H. Spurgin, II, by power of attorney 2005-08-25