NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

GAMCO INVESTORS, INC. ET AL's Holding History (CIK: 0000807249)

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

Q4 2025

Shares 274,350 Value ($000) $17,707 Avg Close $62.82 Range $56.07 - $68.56

Q3 2025

Shares 273,350 Value ($000) $16,021 Avg Close $54.14 Range $49.85 - $58.24

Q2 2025

Shares 273,350 Value ($000) $14,023 Avg Close $53.53 Range $49.39 - $57.89

Q1 2025

Shares 273,350 Value ($000) $15,819 Avg Close $52.06 Range $48.49 - $56.12

Q4 2024

Shares 273,350 Value ($000) $14,613 Avg Close $51.38 Range $48.17 - $54.22

Q3 2024

Shares 273,350 Value ($000) $15,641 Avg Close $49.89 Range $45.22 - $54.21

Q2 2024

Shares 279,850 Value ($000) $14,015 Avg Close $46.58 Range $43.68 - $48.79

Q1 2024

Shares 279,850 Value ($000) $14,253 Avg Close $44.40 Range $41.90 - $47.03

Q4 2023

Shares 279,850 Value ($000) $14,242 Avg Close $44.88 Range $41.24 - $48.79

Q3 2023

Shares 278,350 Value ($000) $13,378 Avg Close $47.33 Range $42.66 - $51.72

Q2 2023

Shares 278,350 Value ($000) $15,799 Avg Close $51.34 Range $48.87 - $53.67

Q1 2023

Shares 278,350 Value ($000) $16,105 Avg Close $49.59 Range $46.79 - $52.43

Q4 2022

Shares 278,350 Value ($000) $16,517 Avg Close $46.84 Range $41.72 - $52.07

Q3 2022

Shares 278,350 Value ($000) $13,717 Avg Close $46.61 Range $42.04 - $51.24

Q2 2022

Shares 278,350 Value ($000) $16,403 Avg Close $49.98 Range $45.98 - $52.83

Q1 2022

Shares 278,350 Value ($000) $16,837 Avg Close $48.63 Range $46.08 - $51.75

Q4 2021

Shares 282,350 Value ($000) $16,139 Avg Close $46.70 Range $43.99 - $49.52

Q3 2021

Shares 284,350 Value ($000) $16,293 Avg Close $50.51 Range $46.92 - $53.26

Q2 2021

Shares 284,400 Value ($000) $17,127 Avg Close $52.44 Range $48.13 - $56.92

Q1 2021

Shares 284,400 Value ($000) $18,543 Avg Close $47.20 Range $42.31 - $53.28

Q4 2020

Shares 287,600 Value ($000) $16,770 Avg Close $43.87 Range $37.97 - $49.46

Q3 2020

Shares 284,800 Value ($000) $13,853 Avg Close $41.40 Range $37.35 - $45.52

Q2 2020

Shares 284,500 Value ($000) $15,511 Avg Close $44.67 Range $39.68 - $50.33

Q1 2020

Shares 279,500 Value ($000) $16,722 Avg Close $54.52 Range $34.68 - $61.46

Q4 2019

Shares 279,500 Value ($000) $20,032 Avg Close $54.65 Range $51.50 - $57.67

Q3 2019

Shares 281,500 Value ($000) $21,127 Avg Close $54.27 Range $50.60 - $58.08

Q2 2019

Shares 292,500 Value ($000) $21,104 Avg Close $53.01 Range $50.21 - $55.53

Q1 2019

Shares 292,500 Value ($000) $20,595 Avg Close $48.59 Range $42.38 - $53.49

Q4 2018

Shares 292,500 Value ($000) $17,386 Avg Close $45.03 Range $41.21 - $48.18

Q3 2018

Shares 292,500 Value ($000) $17,158 Avg Close $43.15 Range $40.65 - $45.13

Q2 2018

Shares 292,500 Value ($000) $16,746 Avg Close $39.06 Range $37.03 - $41.93

Q1 2018

Shares 292,700 Value ($000) $15,747 Avg Close $37.69 Range $35.55 - $42.53

Q4 2017

Shares 292,700 Value ($000) $17,474 Avg Close $42.54 Range $39.78 - $45.45

Q3 2017

Shares 292,700 Value ($000) $16,666 Avg Close $41.74 Range $40.09 - $43.18

Q2 2017

Shares 293,200 Value ($000) $17,891 Avg Close $42.35 Range $40.29 - $44.62

Q1 2017

Shares 293,200 Value ($000) $17,211 Avg Close $39.52 Range $38.19 - $41.05

Q4 2016

Shares 293,200 Value ($000) $16,674 Avg Close $38.33 Range $36.64 - $40.23

Q3 2016

Shares 303,200 Value ($000) $17,443 Avg Close $40.31 Range $38.22 - $43.00

Q2 2016

Shares 334,700 Value ($000) $21,110 Avg Close $39.68 Range $37.02 - $42.70

Q1 2016

Shares 364,700 Value ($000) $22,520 Avg Close $38.33 Range $34.60 - $41.62

Q4 2015

Shares 379,700 Value ($000) $20,599 Avg Close $35.84 Range $33.71 - $37.52

Q3 2015

Shares 402,200 Value ($000) $21,650 Avg Close $34.01 Range $31.66 - $36.90

Q2 2015

Shares 412,200 Value ($000) $20,095 Avg Close $33.40 Range $31.54 - $35.25

Q1 2015

Shares 436,200 Value ($000) $23,463 Avg Close $35.30 Range $32.73 - $38.16

Q4 2014

Shares 441,200 Value ($000) $24,963 Avg Close $33.16 Range $28.63 - $37.51

Q3 2014

Shares 473,200 Value ($000) $21,464 Avg Close $30.29 Range $28.46 - $33.15

Q2 2014

Shares 476,200 Value ($000) $24,853 Avg Close $30.04 Range $28.38 - $33.02

Q1 2014

Shares 476,200 Value ($000) $22,586 Avg Close $27.98 Range $26.36 - $29.86

Q4 2013

Shares 478,200 Value ($000) $20,716 Avg Close $27.40 Range $25.54 - $28.91

Q3 2013

Shares 485,300 Value ($000) $21,800 Avg Close $25.46 Range $23.73 - $28.10

Q2 2013

Shares 445,300 Value ($000) $17,767 Avg Close $24.78 Range $23.14 - $25.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	274,350	$17,707	$62.82	$56.07 - $68.56
Q3 2025	273,350	$16,021	$54.14	$49.85 - $58.24
Q2 2025	273,350	$14,023	$53.53	$49.39 - $57.89
Q1 2025	273,350	$15,819	$52.06	$48.49 - $56.12
Q4 2024	273,350	$14,613	$51.38	$48.17 - $54.22
Q3 2024	273,350	$15,641	$49.89	$45.22 - $54.21
Q2 2024	279,850	$14,015	$46.58	$43.68 - $48.79
Q1 2024	279,850	$14,253	$44.40	$41.90 - $47.03
Q4 2023	279,850	$14,242	$44.88	$41.24 - $48.79
Q3 2023	278,350	$13,378	$47.33	$42.66 - $51.72
Q2 2023	278,350	$15,799	$51.34	$48.87 - $53.67
Q1 2023	278,350	$16,105	$49.59	$46.79 - $52.43
Q4 2022	278,350	$16,517	$46.84	$41.72 - $52.07
Q3 2022	278,350	$13,717	$46.61	$42.04 - $51.24
Q2 2022	278,350	$16,403	$49.98	$45.98 - $52.83
Q1 2022	278,350	$16,837	$48.63	$46.08 - $51.75
Q4 2021	282,350	$16,139	$46.70	$43.99 - $49.52
Q3 2021	284,350	$16,293	$50.51	$46.92 - $53.26
Q2 2021	284,400	$17,127	$52.44	$48.13 - $56.92
Q1 2021	284,400	$18,543	$47.20	$42.31 - $53.28
Q4 2020	287,600	$16,770	$43.87	$37.97 - $49.46
Q3 2020	284,800	$13,853	$41.40	$37.35 - $45.52
Q2 2020	284,500	$15,511	$44.67	$39.68 - $50.33
Q1 2020	279,500	$16,722	$54.52	$34.68 - $61.46
Q4 2019	279,500	$20,032	$54.65	$51.50 - $57.67
Q3 2019	281,500	$21,127	$54.27	$50.60 - $58.08
Q2 2019	292,500	$21,104	$53.01	$50.21 - $55.53
Q1 2019	292,500	$20,595	$48.59	$42.38 - $53.49
Q4 2018	292,500	$17,386	$45.03	$41.21 - $48.18
Q3 2018	292,500	$17,158	$43.15	$40.65 - $45.13
Q2 2018	292,500	$16,746	$39.06	$37.03 - $41.93
Q1 2018	292,700	$15,747	$37.69	$35.55 - $42.53
Q4 2017	292,700	$17,474	$42.54	$39.78 - $45.45
Q3 2017	292,700	$16,666	$41.74	$40.09 - $43.18
Q2 2017	293,200	$17,891	$42.35	$40.29 - $44.62
Q1 2017	293,200	$17,211	$39.52	$38.19 - $41.05
Q4 2016	293,200	$16,674	$38.33	$36.64 - $40.23
Q3 2016	303,200	$17,443	$40.31	$38.22 - $43.00
Q2 2016	334,700	$21,110	$39.68	$37.02 - $42.70
Q1 2016	364,700	$22,520	$38.33	$34.60 - $41.62
Q4 2015	379,700	$20,599	$35.84	$33.71 - $37.52
Q3 2015	402,200	$21,650	$34.01	$31.66 - $36.90
Q2 2015	412,200	$20,095	$33.40	$31.54 - $35.25
Q1 2015	436,200	$23,463	$35.30	$32.73 - $38.16
Q4 2014	441,200	$24,963	$33.16	$28.63 - $37.51
Q3 2014	473,200	$21,464	$30.29	$28.46 - $33.15
Q2 2014	476,200	$24,853	$30.04	$28.38 - $33.02
Q1 2014	476,200	$22,586	$27.98	$26.36 - $29.86
Q4 2013	478,200	$20,716	$27.40	$25.54 - $28.91
Q3 2013	485,300	$21,800	$25.46	$23.73 - $28.10
Q2 2013	445,300	$17,767	$24.78	$23.14 - $25.97