ASGN Inc - Director's Dealing 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2010-03-03

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

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-03	Common Stock	S	100	$7.05	Disposed	590421	Direct
2010-03-04	Common Stock	S	1740	$7	Disposed	588681	Direct
2010-03-04	Common Stock	S	300	$7.005	Disposed	588381	Direct
2010-03-04	Common Stock	S	100	$7.01	Disposed	588281	Direct
2010-03-04	Common Stock	S	100	$7.02	Disposed	588181	Direct
2010-03-05	Common Stock	S	3892	$6.97	Disposed	584289	Direct
2010-03-05	Common Stock	S	2600	$6.975	Disposed	581689	Direct
2010-03-05	Common Stock	S	1000	$6.98	Disposed	580689	Direct
2010-03-05	Common Stock	S	500	$6.9725	Disposed	580189	Direct
2010-03-05	Common Stock	S	4694	$7	Disposed	575495	Direct
2010-03-05	Common Stock	S	122	$7.01	Disposed	575373	Direct
2010-03-05	Common Stock	S	400	$7.02	Disposed	574973	Direct