OIL STS INTL INC

Ticker: OIS CUSIP: 678026105 Class: Common Stock

NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO's Holding History (CIK: 0001141802)

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

Q3 2025

Shares 313 Value ($000) $2 Avg Close $5.48 Range $4.75 - $6.42

Q2 2025

Shares 313 Value ($000) $2 Avg Close $4.42 Range $3.08 - $5.81

Q3 2018

Shares 72 Value ($000) $2 Avg Close $32.65 Range $29.30 - $37.39

Q3 2013

Shares 27 Value ($000) $3 Avg Close $54.60 Range $50.41 - $61.05

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	313	$2	$5.48	$4.75 - $6.42
Q2 2025	313	$2	$4.42	$3.08 - $5.81
Q3 2018	72	$2	$32.65	$29.30 - $37.39
Q3 2013	27	$3	$54.60	$50.41 - $61.05