OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

CONGRESS ASSET MANAGEMENT CO /MA's Holding History (CIK: 0000897378)

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

Q1 2014

Shares 16,715 Value ($000) $1,648 Avg Close $55.40 Range $51.78 - $59.95

Q4 2013

Shares 18,850 Value ($000) $1,917 Avg Close $59.96 Range $55.90 - $64.94

Q3 2013

Shares 19,460 Value ($000) $2,013 Avg Close $54.60 Range $50.41 - $61.05

Q2 2013

Shares 19,645 Value ($000) $1,820 Avg Close $51.03 Range $40.78 - $59.14

Period	Shares	Value ($000)	Average Close	Price Range
Q1 2014	16,715	$1,648	$55.40	$51.78 - $59.95
Q4 2013	18,850	$1,917	$59.96	$55.90 - $64.94
Q3 2013	19,460	$2,013	$54.60	$50.41 - $61.05
Q2 2013	19,645	$1,820	$51.03	$40.78 - $59.14