ASGN Inc — Director's Dealing 2012

Sep 21, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2012-09-14

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

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-09-14	Common Stock	M	37810	$5.11	Acquired	659948	Direct
2012-09-14	Common Stock	M	37189	$4.45	Acquired	697137	Direct
2012-09-19	Common Stock	S	74999	$16.184	Disposed	622138	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2012-09-14	Non-Qualified Stock Option (right to buy)	$4.45	M	37189	Disposed	2014-09-27	Common Stock (37189)	Direct
2012-09-14	Non-Qualified Stock Option (right to buy)	$5.11	M	37810	Disposed	2014-03-23	Common Stock (37810)	Direct

Footnotes

F1: These options vest one twenty-fourth on November 27, 2004, and one forty-eighth of such amount with respect to each month thereafter.