NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

LUMINUS MANAGEMENT LLC's Holding History (CIK: 0001279151)

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

Q4 2017

Shares 14,562 Value ($000) $869 Avg Close $42.54 Range $39.78 - $45.45

Q3 2017

Shares 17,231 Value ($000) $981 Avg Close $41.74 Range $40.09 - $43.18

Q1 2017

Shares 17,391 Value ($000) $1,021 Avg Close $39.52 Range $38.19 - $41.05

Q4 2016

Shares 281,619 Value ($000) $16,016 Avg Close $38.33 Range $36.64 - $40.23

Q1 2016

Shares 148,000 Value ($000) $9,139 Avg Close $38.33 Range $34.60 - $41.62

Q3 2015

Shares 339,649 Value ($000) $18,283 Avg Close $34.01 Range $31.66 - $36.90

Q2 2015

Shares 339,649 Value ($000) $16,558 Avg Close $33.40 Range $31.54 - $35.25

Q1 2015

Shares 339,649 Value ($000) $18,270 Avg Close $35.30 Range $32.73 - $38.16

Q4 2014

Shares 304,649 Value ($000) $17,237 Avg Close $33.16 Range $28.63 - $37.51

Q2 2013

Shares 10,911 Value ($000) $435 Avg Close $24.78 Range $23.14 - $25.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2017	14,562	$869	$42.54	$39.78 - $45.45
Q3 2017	17,231	$981	$41.74	$40.09 - $43.18
Q1 2017	17,391	$1,021	$39.52	$38.19 - $41.05
Q4 2016	281,619	$16,016	$38.33	$36.64 - $40.23
Q1 2016	148,000	$9,139	$38.33	$34.60 - $41.62
Q3 2015	339,649	$18,283	$34.01	$31.66 - $36.90
Q2 2015	339,649	$16,558	$33.40	$31.54 - $35.25
Q1 2015	339,649	$18,270	$35.30	$32.73 - $38.16
Q4 2014	304,649	$17,237	$33.16	$28.63 - $37.51
Q2 2013	10,911	$435	$24.78	$23.14 - $25.97