ASGN Inc — Director's Dealing 2010

Aug 11, 2010

SEC Form 4 — Statement of Changes in Beneficial Ownership

Issuer: ON ASSIGNMENT INC (ASGN)
CIK: 0000890564
Period of Report: 2010-02-01

Reporting Person: HOLMAN JONATHAN S (Director)

Non-Derivative Transactions

Date	Security	Code	Shares	Price	A/D	Holdings After	Ownership
2010-02-01	Common Stock	J	7499	—	Disposed	13780	Direct
2010-08-06	Common Stock	A	11071	—	Acquired	24851	Direct
2010-08-06	Common Stock	D	975	$5.42	Disposed	23876	Direct
2010-08-06	Common Stock	D	1106	$5.42	Disposed	22770	Direct
2010-08-06	Common Stock	J	15500	—	Disposed	23500	Indirect

Derivative Transactions

Date	Security	Exercise Price	Code	Shares	A/D	Expiration	Underlying	Ownership
2010-05-14	Non-Qualified Stock Option (right to buy)	$4.35	J	4500	Disposed	2013-06-17	Common Stock (4500)	Direct
2010-05-14	Non-Qualified Stock Option (right to buy)	$5.28	J	4500	Disposed	2014-06-15	Common Stock (4500)	Direct
2010-05-14	Non-Qualified Stock Option (right to buy)	$	J	4500	Disposed	2011-06-07	Common Stock (4500)	Direct
2010-05-14	Non-Qualified Stock Option (right to buy)	$	J	4500	Disposed	2012-06-18	Common Stock (4500)	Direct

Footnotes

F1: Transfer pursuant to a qualified domestic relations order.

F2: 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.

F3: All options under this grant are fully vested as of the date of grant.

F4: Exercise Price is $23.01

F5: Exercise Price is $19.78