OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

HighVista Strategies LLC's Holding History (CIK: 0001335325)

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

Q2 2014

Shares 50,244 Value ($000) $3,220 Avg Close $58.83 Range $53.39 - $65.77

Q3 2013

Shares 77,532 Value ($000) $8,021 Avg Close $54.60 Range $50.41 - $61.05

Period	Shares	Value ($000)	Average Close	Price Range
Q2 2014	50,244	$3,220	$58.83	$53.39 - $65.77
Q3 2013	77,532	$8,021	$54.60	$50.41 - $61.05