ASGN Inc — Director's Dealing 2011

Feb 22, 2011

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2011-02-17

Reporting Person: BRILL JAMES L (Senior Vice President and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2011-02-17	Common Stock	D	570	$8.89	Disposed	201609	Direct
2011-02-17	Common Stock	A	7928	—	Acquired	209537	Direct
2011-02-17	Common Stock	D	2907	$8.89	Disposed	206630	Direct
2011-02-17	Common Stock	A	18390	—	Acquired	225020	Direct
2011-02-17	Common Stock	D	6745	$8.89	Disposed	218275	Direct
2011-02-17	Common Stock	A	20694	—	Acquired	238969	Direct
2011-02-17	Common Stock	D	7590	$8.89	Disposed	231379	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: Performance Award granted 3/17/10. Goal Acheived - Based on Adjusted EBITDA