NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

GAM Holding AG's Holding History (CIK: 0001438848)

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

Q4 2019

Shares 3,922 Value ($000) $281 Avg Close $54.65 Range $51.50 - $57.67

Q3 2019

Shares 14,076 Value ($000) $1,056 Avg Close $54.27 Range $50.60 - $58.08

Q2 2019

Shares 17,262 Value ($000) $1,245 Avg Close $53.01 Range $50.21 - $55.53

Q1 2019

Shares 14,050 Value ($000) $989 Avg Close $48.59 Range $42.38 - $53.49

Q4 2018

Shares 11,332 Value ($000) $673 Avg Close $45.03 Range $41.21 - $48.18

Q3 2018

Shares 8,845 Value ($000) $519 Avg Close $43.15 Range $40.65 - $45.13

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2019	3,922	$281	$54.65	$51.50 - $57.67
Q3 2019	14,076	$1,056	$54.27	$50.60 - $58.08
Q2 2019	17,262	$1,245	$53.01	$50.21 - $55.53
Q1 2019	14,050	$989	$48.59	$42.38 - $53.49
Q4 2018	11,332	$673	$45.03	$41.21 - $48.18
Q3 2018	8,845	$519	$43.15	$40.65 - $45.13