ASGN Inc — Director's Dealing 2010

Apr 15, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2010-04-14

Reporting Person: McKenna Thomas Joseph (Senior Vice President)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-04-14	Common Stock	D	2594	$7.15	Disposed	40043	Direct
2010-04-14	Common Stock	D	2454	$7.15	Disposed	37589	Direct
2010-04-14	Common Stock	D	4008	—	Disposed	33581	Direct
2010-04-14	Common Stock	D	2942	—	Disposed	30639	Direct
2010-04-14	Common Stock	D	5000	—	Disposed	25639	Direct
2010-04-14	Common Stock	D	675	—	Disposed	24964	Direct

Footnotes

F1: Executive officer elected to satisfy tax withholding obligations upon vesting by having On Assignment, Inc. withhold a number of vested shares equal to that of the employee's tax liability.

F2: Mr. McKenna's employment with On Assignment terminated on 4/14/10.