INSPERITY, INC. — Director's Dealing 2010

May 25, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ADMINISTAFF INC \DE\ (ASF)
CIK: 0001000753
Period of Report: 2010-05-24

Reporting Person: SARVADI PAUL J (Director, Chairman of the Board & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-05-24	Common Stock	S	24000	$24.6969	Disposed	1259273	Indirect
2010-05-24	Common Stock	S	12000	$24.6969	Disposed	611506	Indirect

Holdings (Non-Derivative)

Security	Shares	Ownership
Common Stock	19644	Indirect
Common Stock	180643	Direct

Footnotes

F1: The sales reported on this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on May 5, 2010.

F2: Weighted average sales price. Actual prices ranged from $24.49 to $24.94.

F3: Full information regarding the number of shares sold at each separate price will be provided upon request to the SEC's staff, Administaff, Inc. or its stockholders.