OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

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

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

Q4 2016

Shares 8,100 Value ($000) $316 Avg Close $33.97 Range $28.00 - $41.75

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2016	8,100	$316	$33.97	$28.00 - $41.75