NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

NEW YORK STATE TEACHERS RETIREMENT SYSTEM's Holding History (CIK: 0000314969)

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

Q4 2025

Shares 74,445 Value ($000) $5 Avg Close $62.82 Range $56.07 - $68.56

Q3 2025

Shares 75,335 Value ($000) $4 Avg Close $54.14 Range $49.85 - $58.24

Q2 2025

Shares 75,475 Value ($000) $4 Avg Close $53.53 Range $49.39 - $57.89

Q1 2025

Shares 75,478 Value ($000) $4 Avg Close $52.06 Range $48.49 - $56.12

Q4 2024

Shares 75,178 Value ($000) $4 Avg Close $51.38 Range $48.17 - $54.22

Q3 2024

Shares 75,178 Value ($000) $4 Avg Close $49.89 Range $45.22 - $54.21

Q2 2024

Shares 75,578 Value ($000) $4 Avg Close $46.58 Range $43.68 - $48.79

Q1 2024

Shares 75,878 Value ($000) $4 Avg Close $44.40 Range $41.90 - $47.03

Q4 2023

Shares 75,069 Value ($000) $4 Avg Close $44.88 Range $41.24 - $48.79

Q3 2023

Shares 74,369 Value ($000) $4 Avg Close $47.33 Range $42.66 - $51.72

Q2 2023

Shares 74,369 Value ($000) $4 Avg Close $51.34 Range $48.87 - $53.67

Q1 2023

Shares 74,161 Value ($000) $4 Avg Close $49.59 Range $46.79 - $52.43

Q4 2022

Shares 73,869 Value ($000) $4 Avg Close $46.84 Range $41.72 - $52.07

Q3 2022

Shares 72,569 Value ($000) $3,576 Avg Close $46.61 Range $42.04 - $51.24

Q2 2022

Shares 72,469 Value ($000) $4,271 Avg Close $49.98 Range $45.98 - $52.83

Q1 2022

Shares 72,369 Value ($000) $4,378 Avg Close $48.63 Range $46.08 - $51.75

Q4 2021

Shares 77,369 Value ($000) $4,422 Avg Close $46.70 Range $43.99 - $49.52

Q3 2021

Shares 71,277 Value ($000) $4,084 Avg Close $50.51 Range $46.92 - $53.26

Q2 2021

Shares 63,971 Value ($000) $3,852 Avg Close $52.44 Range $48.13 - $56.92

Q1 2021

Shares 64,073 Value ($000) $4,178 Avg Close $47.20 Range $42.31 - $53.28

Q4 2020

Shares 64,500 Value ($000) $3,761 Avg Close $43.87 Range $37.97 - $49.46

Q3 2020

Shares 64,600 Value ($000) $3,142 Avg Close $41.40 Range $37.35 - $45.52

Q2 2020

Shares 64,800 Value ($000) $3,533 Avg Close $44.67 Range $39.68 - $50.33

Q1 2020

Shares 64,900 Value ($000) $3,883 Avg Close $54.52 Range $34.68 - $61.46

Q4 2019

Shares 62,800 Value ($000) $4,501 Avg Close $54.65 Range $51.50 - $57.67

Q3 2019

Shares 62,600 Value ($000) $4,698 Avg Close $54.27 Range $50.60 - $58.08

Q2 2019

Shares 62,600 Value ($000) $4,517 Avg Close $53.01 Range $50.21 - $55.53

Q1 2019

Shares 62,500 Value ($000) $4,401 Avg Close $48.59 Range $42.38 - $53.49

Q4 2018

Shares 49,800 Value ($000) $2,960 Avg Close $45.03 Range $41.21 - $48.18

Q3 2018

Shares 54,600 Value ($000) $3,203 Avg Close $43.15 Range $40.65 - $45.13

Q2 2018

Shares 54,600 Value ($000) $3,126 Avg Close $39.06 Range $37.03 - $41.93

Q1 2018

Shares 54,400 Value ($000) $2,927 Avg Close $37.69 Range $35.55 - $42.53

Q4 2017

Shares 54,300 Value ($000) $3,242 Avg Close $42.54 Range $39.78 - $45.45

Q3 2017

Shares 54,400 Value ($000) $3,098 Avg Close $41.74 Range $40.09 - $43.18

Q2 2017

Shares 52,000 Value ($000) $3,173 Avg Close $42.35 Range $40.29 - $44.62

Q1 2017

Shares 50,300 Value ($000) $2,953 Avg Close $39.52 Range $38.19 - $41.05

Q4 2016

Shares 47,400 Value ($000) $2,696 Avg Close $38.33 Range $36.64 - $40.23

Q3 2016

Shares 47,400 Value ($000) $2,727 Avg Close $40.31 Range $38.22 - $43.00

Q2 2016

Shares 67,585 Value ($000) $4,263 Avg Close $39.68 Range $37.02 - $42.70

Q1 2016

Shares 62,285 Value ($000) $3,846 Avg Close $38.33 Range $34.60 - $41.62

Q4 2015

Shares 52,785 Value ($000) $2,864 Avg Close $35.84 Range $33.71 - $37.52

Q3 2015

Shares 26,785 Value ($000) $1,442 Avg Close $34.01 Range $31.66 - $36.90

Q2 2015

Shares 26,488 Value ($000) $1,291 Avg Close $33.40 Range $31.54 - $35.25

Q1 2015

Shares 25,788 Value ($000) $1,387 Avg Close $35.30 Range $32.73 - $38.16

Q4 2014

Shares 24,988 Value ($000) $1,414 Avg Close $33.16 Range $28.63 - $37.51

Q3 2014

Shares 22,571 Value ($000) $1,024 Avg Close $30.29 Range $28.46 - $33.15

Q2 2014

Shares 22,371 Value ($000) $1,168 Avg Close $30.04 Range $28.38 - $33.02

Q1 2014

Shares 22,371 Value ($000) $1,061 Avg Close $27.98 Range $26.36 - $29.86

Q4 2013

Shares 22,771 Value ($000) $986 Avg Close $27.40 Range $25.54 - $28.91

Q3 2013

Shares 22,971 Value ($000) $1,032 Avg Close $25.46 Range $23.73 - $28.10

Q2 2013

Shares 24,171 Value ($000) $964 Avg Close $24.78 Range $23.14 - $25.97

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	74,445	$5	$62.82	$56.07 - $68.56
Q3 2025	75,335	$4	$54.14	$49.85 - $58.24
Q2 2025	75,475	$4	$53.53	$49.39 - $57.89
Q1 2025	75,478	$4	$52.06	$48.49 - $56.12
Q4 2024	75,178	$4	$51.38	$48.17 - $54.22
Q3 2024	75,178	$4	$49.89	$45.22 - $54.21
Q2 2024	75,578	$4	$46.58	$43.68 - $48.79
Q1 2024	75,878	$4	$44.40	$41.90 - $47.03
Q4 2023	75,069	$4	$44.88	$41.24 - $48.79
Q3 2023	74,369	$4	$47.33	$42.66 - $51.72
Q2 2023	74,369	$4	$51.34	$48.87 - $53.67
Q1 2023	74,161	$4	$49.59	$46.79 - $52.43
Q4 2022	73,869	$4	$46.84	$41.72 - $52.07
Q3 2022	72,569	$3,576	$46.61	$42.04 - $51.24
Q2 2022	72,469	$4,271	$49.98	$45.98 - $52.83
Q1 2022	72,369	$4,378	$48.63	$46.08 - $51.75
Q4 2021	77,369	$4,422	$46.70	$43.99 - $49.52
Q3 2021	71,277	$4,084	$50.51	$46.92 - $53.26
Q2 2021	63,971	$3,852	$52.44	$48.13 - $56.92
Q1 2021	64,073	$4,178	$47.20	$42.31 - $53.28
Q4 2020	64,500	$3,761	$43.87	$37.97 - $49.46
Q3 2020	64,600	$3,142	$41.40	$37.35 - $45.52
Q2 2020	64,800	$3,533	$44.67	$39.68 - $50.33
Q1 2020	64,900	$3,883	$54.52	$34.68 - $61.46
Q4 2019	62,800	$4,501	$54.65	$51.50 - $57.67
Q3 2019	62,600	$4,698	$54.27	$50.60 - $58.08
Q2 2019	62,600	$4,517	$53.01	$50.21 - $55.53
Q1 2019	62,500	$4,401	$48.59	$42.38 - $53.49
Q4 2018	49,800	$2,960	$45.03	$41.21 - $48.18
Q3 2018	54,600	$3,203	$43.15	$40.65 - $45.13
Q2 2018	54,600	$3,126	$39.06	$37.03 - $41.93
Q1 2018	54,400	$2,927	$37.69	$35.55 - $42.53
Q4 2017	54,300	$3,242	$42.54	$39.78 - $45.45
Q3 2017	54,400	$3,098	$41.74	$40.09 - $43.18
Q2 2017	52,000	$3,173	$42.35	$40.29 - $44.62
Q1 2017	50,300	$2,953	$39.52	$38.19 - $41.05
Q4 2016	47,400	$2,696	$38.33	$36.64 - $40.23
Q3 2016	47,400	$2,727	$40.31	$38.22 - $43.00
Q2 2016	67,585	$4,263	$39.68	$37.02 - $42.70
Q1 2016	62,285	$3,846	$38.33	$34.60 - $41.62
Q4 2015	52,785	$2,864	$35.84	$33.71 - $37.52
Q3 2015	26,785	$1,442	$34.01	$31.66 - $36.90
Q2 2015	26,488	$1,291	$33.40	$31.54 - $35.25
Q1 2015	25,788	$1,387	$35.30	$32.73 - $38.16
Q4 2014	24,988	$1,414	$33.16	$28.63 - $37.51
Q3 2014	22,571	$1,024	$30.29	$28.46 - $33.15
Q2 2014	22,371	$1,168	$30.04	$28.38 - $33.02
Q1 2014	22,371	$1,061	$27.98	$26.36 - $29.86
Q4 2013	22,771	$986	$27.40	$25.54 - $28.91
Q3 2013	22,971	$1,032	$25.46	$23.73 - $28.10
Q2 2013	24,171	$964	$24.78	$23.14 - $25.97