ASGN Inc — Director's Dealing 2013

Apr 4, 2013

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2009-01-22

Reporting Person: Gibson Christina (V.P., Finance and Controller)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2009-01-22	Common Stock	A	6924	—	Acquired	19354	Direct
2009-04-02	Common Stock	D	121	$3.09	Disposed	19116	Direct
2011-01-22	Common Stock	D	1415	$7.92	Disposed	19687	Direct
2012-12-13	Common Stock	A	3581	—	Acquired	14769	Direct

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2009-01-22	Non-Qualified Stock Option (right to buy)	$11.04	C	36000	Disposed	2017-05-30	Common Stock (36000)	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.