| SC 13G/A | 2014-01-30 | BlackRock Inc. | ON ASSIGNMENT INC | 4,002,062 | 7.4% | EDGAR |
| SC 13G/A | 2013-02-11 | VANGUARD GROUP INC | ON ASSIGNMENT INC | 2,634,631 | 5.0% | EDGAR |
| SC 13G/A | 2013-02-11 | DIMENSIONAL FUND ADVISORS LP | ON ASSIGNMENT INC | 1,816,670 | 3.5% | EDGAR |
| SC 13G/A | 2013-02-11 | TimesSquare Capital Management, LLC | ON ASSIGNMENT INC | 3,224,920 | 6.1% | EDGAR |
| SC 13G/A | 2013-02-08 | BlackRock Inc. | ON ASSIGNMENT INC | 4,051,453 | 7.7% | EDGAR |
| SC 13G/A | 2013-02-06 | PRICE T ROWE ASSOCIATES INC /MD/ | ON ASSIGNMENT INC | 2,573,110 | 4.8% | EDGAR |
| SC 13D | 2012-05-24 | Callaghan Brian J. | ON ASSIGNMENT INC | 3,730,230 | 7.2% | EDGAR |
| SC 13G/A | 2012-04-10 | WELLS FARGO & CO/MN | ON ASSIGNMENT INC | 1,589,587 | 4.2% | EDGAR |
| SC 13G/A | 2012-03-12 | BlackRock Inc. | ON ASSIGNMENT INC | 3,783,636 | 10.3% | EDGAR |
| SC 13G/A | 2012-02-14 | DIMENSIONAL FUND ADVISORS LP | ON ASSIGNMENT INC | 1,888,309 | 5.1% | EDGAR |
| SC 13G/A | 2012-02-09 | PRICE T ROWE ASSOCIATES INC /MD/ | ON ASSIGNMENT INC | 3,148,580 | 8.5% | EDGAR |
| SC 13G/A | 2012-02-09 | BlackRock Inc. | ON ASSIGNMENT INC | 3,605,400 | 9.8% | EDGAR |
| SC 13G/A | 2012-02-08 | TimesSquare Capital Management, LLC | ON ASSIGNMENT INC | 3,115,566 | 8.5% | EDGAR |
| SC 13G | 2012-02-08 | VANGUARD GROUP INC | ON ASSIGNMENT INC | 1,978,108 | 5.4% | EDGAR |
| SC 13G/A | 2012-01-25 | WELLS FARGO & CO/MN | ON ASSIGNMENT INC | 2,099,432 | 5.7% | EDGAR |
| SC 13G/A | 2012-01-10 | BLAIR WILLIAM & CO/IL | ON ASSIGNMENT INC | 1,792,926 | 4.9% | EDGAR |
| SC 13G/A | 2011-06-10 | WELLS FARGO & CO/MN | ON ASSIGNMENT INC | 3,120,001 | 8.4% | EDGAR |
| SC 13G | 2011-02-11 | DIMENSIONAL FUND ADVISORS LP | ON ASSIGNMENT INC | 1,866,579 | 5.1% | EDGAR |
| SC 13G/A | 2011-02-10 | PRICE T ROWE ASSOCIATES INC /MD/ | ON ASSIGNMENT INC | 3,286,950 | 8.9% | EDGAR |
| SC 13G/A | 2011-02-09 | TimesSquare Capital Management, LLC | ON ASSIGNMENT INC | 3,119,166 | 8.5% | EDGAR |