ASGN Inc — Director's Dealing 2012

Jan 5, 2012

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2012-01-02

Reporting Person: BRILL JAMES L (Senior Vice President and CFO)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2012-01-02	Common Stock	D	6093	$11.18	Disposed	204716	Direct
2012-01-03	Common Stock	D	3793	$11.02	Disposed	200923	Direct
2012-01-03	Common Stock	A	23956	—	Acquired	224879	Direct
2012-01-04	Common Stock	D	4527	$11.05	Disposed	220352	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.

F2: 60% of this award vests in three equal annual installments. The remaining 40% is subject to certain annual performance targets set by the Company.