ON ASSIGNMENT INC

CUSIP: 682159108 Class: COM

DRIEHAUS CAPITAL MANAGEMENT LLC's Holding History (CIK: 0000938206)

Note: Option positions (PUT/CALL) are excluded.

Q2 2017
Shares 50,915 Value ($000) $2,757 Avg Close — Range —
Q1 2016
Shares 5,418 Value ($000) $200 Avg Close — Range —
Q4 2015
Shares 128,220 Value ($000) $5,763 Avg Close — Range —
Q3 2015
Shares 113,179 Value ($000) $4,176 Avg Close — Range —
Q2 2015
Shares 152,231 Value ($000) $5,980 Avg Close — Range —
Q1 2015
Shares 143,048 Value ($000) $5,489 Avg Close — Range —
Q2 2014
Shares 163,831 Value ($000) $5,827 Avg Close — Range —
Q1 2014
Shares 115,816 Value ($000) $4,469 Avg Close — Range —
Q4 2013
Shares 166,761 Value ($000) $5,823 Avg Close — Range —
Q3 2013
Shares 261,965 Value ($000) $8,645 Avg Close — Range —
Q2 2013
Shares 174,164 Value ($000) $4,654 Avg Close — Range —