ASGN Inc — Director's Dealing 2010

Mar 3, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2010-03-02

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-03-02	Common Stock	S	8775	$6.95	Disposed	603102	Direct
2010-03-02	Common Stock	S	5278	$7	Disposed	597824	Direct
2010-03-02	Common Stock	S	315	$7.01	Disposed	597509	Direct
2010-03-02	Common Stock	S	84	$7.02	Disposed	597425	Direct
2010-03-02	Common Stock	S	1644	$7.05	Disposed	595781	Direct
2010-03-02	Common Stock	S	700	$7.1	Disposed	595081	Direct
2010-03-02	Common Stock	S	313	$7.11	Disposed	594768	Direct
2010-03-02	Common Stock	S	200	$7.13	Disposed	594568	Direct
2010-03-02	Common Stock	S	200	$7.14	Disposed	594368	Direct
2010-03-02	Common Stock	S	100	$7.16	Disposed	594268	Direct
2010-03-02	Common Stock	S	137	$7.17	Disposed	594131	Direct
2010-03-02	Common Stock	S	200	$7.18	Disposed	593931	Direct
2010-03-02	Common Stock	S	300	$7.19	Disposed	593631	Direct
2010-03-02	Common Stock	S	300	$7.2	Disposed	593331	Direct
2010-03-02	Common Stock	S	506	$7.21	Disposed	592825	Direct
2010-03-02	Common Stock	S	100	$7.22	Disposed	592725	Direct
2010-03-02	Common Stock	S	200	$7.23	Disposed	592525	Direct
2010-03-02	Common Stock	S	100	$7.24	Disposed	592425	Direct
2010-03-02	Common Stock	D	1019	$6.95	Disposed	591406	Direct
2010-03-02	Common Stock	D	885	$6.95	Disposed	590521	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.