ASGN Inc — Director's Dealing 2012

Feb 17, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2012-02-17

Reporting Person: DAMERIS PETER T (Director, President & CEO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-02-17	Common Stock	M	54069	$5.22	Acquired	676207	Direct
2012-02-17	Common Stock	S	54069	$13.8552	Disposed	622138	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-02-17	Non-Qualified Stock Option (right to buy)	$5.22	M	54069	Disposed	2013-11-12	Common Stock (54069)	Direct

Footnotes

F1: These options vest one-fourth of the total number of shares on November 3, 2004, and one forty-eighth of such amount with respect to each month thereafter.