OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

TOCQUEVILLE ASSET MANAGEMENT L.P.'s Holding History (CIK: 0000883961)

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

Q4 2015

Shares 19,100 Value ($000) $520 Avg Close $29.75 Range $24.24 - $33.14

Q3 2015

Shares 97,600 Value ($000) $2,550 Avg Close $29.60 Range $23.35 - $37.27

Q2 2015

Shares 137,100 Value ($000) $5,104 Avg Close $42.08 Range $36.30 - $48.16

Q1 2015

Shares 145,100 Value ($000) $5,771 Avg Close $42.31 Range $38.41 - $49.31

Q4 2014

Shares 441,500 Value ($000) $21,589 Avg Close $54.06 Range $41.51 - $62.34

Q3 2014

Shares 422,100 Value ($000) $26,128 Avg Close $62.75 Range $59.66 - $65.05

Q2 2014

Shares 307,700 Value ($000) $19,720 Avg Close $58.83 Range $53.39 - $65.77

Q1 2014

Shares 10,000 Value ($000) $986 Avg Close $55.40 Range $51.78 - $59.95

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2015	19,100	$520	$29.75	$24.24 - $33.14
Q3 2015	97,600	$2,550	$29.60	$23.35 - $37.27
Q2 2015	137,100	$5,104	$42.08	$36.30 - $48.16
Q1 2015	145,100	$5,771	$42.31	$38.41 - $49.31
Q4 2014	441,500	$21,589	$54.06	$41.51 - $62.34
Q3 2014	422,100	$26,128	$62.75	$59.66 - $65.05
Q2 2014	307,700	$19,720	$58.83	$53.39 - $65.77
Q1 2014	10,000	$986	$55.40	$51.78 - $59.95