OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

FIRST INTERSTATE BANK's Holding History (CIK: 0001125727)

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

Q4 2018

Shares 611 Value ($000) $9 Avg Close $23.01 Range $13.20 - $34.66

Q3 2018

Shares 611 Value ($000) $20 Avg Close $32.65 Range $29.30 - $37.39

Q2 2018

Shares 611 Value ($000) $20 Avg Close $33.64 Range $25.25 - $38.95

Q1 2018

Shares 611 Value ($000) $16 Avg Close $28.65 Range $23.65 - $34.72

Q4 2017

Shares 611 Value ($000) $17 Avg Close $24.24 Range $20.23 - $29.15

Q3 2017

Shares 611 Value ($000) $15 Avg Close $24.59 Range $20.90 - $28.85

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2018	611	$9	$23.01	$13.20 - $34.66
Q3 2018	611	$20	$32.65	$29.30 - $37.39
Q2 2018	611	$20	$33.64	$25.25 - $38.95
Q1 2018	611	$16	$28.65	$23.65 - $34.72
Q4 2017	611	$17	$24.24	$20.23 - $29.15
Q3 2017	611	$15	$24.59	$20.90 - $28.85