NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

SEI INVESTMENTS CO's Holding History (CIK: 0000350894)

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

Q4 2025

Shares 41,999 Value ($000) $2,711 Avg Close $62.82 Range $56.07 - $68.56

Q3 2025

Shares 56,305 Value ($000) $3,300 Avg Close $54.14 Range $49.85 - $58.24

Q2 2025

Shares 54,468 Value ($000) $2,794 Avg Close $53.53 Range $49.39 - $57.89

Q1 2025

Shares 317,212 Value ($000) $18,357 Avg Close $52.06 Range $48.49 - $56.12

Q4 2024

Shares 357,290 Value ($000) $19,101 Avg Close $51.38 Range $48.17 - $54.22

Q3 2024

Shares 395,227 Value ($000) $22,615 Avg Close $49.89 Range $45.22 - $54.21

Q2 2024

Shares 405,604 Value ($000) $20,312 Avg Close $46.58 Range $43.68 - $48.79

Q1 2024

Shares 415,097 Value ($000) $21,141 Avg Close $44.40 Range $41.90 - $47.03

Q4 2023

Shares 432,277 Value ($000) $21,999 Avg Close $44.88 Range $41.24 - $48.79

Q3 2023

Shares 435,800 Value ($000) $20,945 Avg Close $47.33 Range $42.66 - $51.72

Q2 2023

Shares 409,744 Value ($000) $23,257 Avg Close $51.34 Range $48.87 - $53.67

Q1 2023

Shares 379,312 Value ($000) $21,947 Avg Close $49.59 Range $46.79 - $52.43

Q4 2022

Shares 370,625 Value ($000) $21,993 Avg Close $46.84 Range $41.72 - $52.07

Q3 2022

Shares 340,527 Value ($000) $16,782 Avg Close $46.61 Range $42.04 - $51.24

Q2 2022

Shares 306,126 Value ($000) $18,040 Avg Close $49.98 Range $45.98 - $52.83

Q1 2022

Shares 267,938 Value ($000) $16,208 Avg Close $48.63 Range $46.08 - $51.75

Q4 2021

Shares 290,616 Value ($000) $16,611 Avg Close $46.70 Range $43.99 - $49.52

Q3 2021

Shares 227,915 Value ($000) $13,060 Avg Close $50.51 Range $46.92 - $53.26

Q2 2021

Shares 223,197 Value ($000) $13,440 Avg Close $52.44 Range $48.13 - $56.92

Q1 2021

Shares 313,265 Value ($000) $20,374 Avg Close $47.20 Range $42.31 - $53.28

Q4 2020

Shares 244,930 Value ($000) $14,282 Avg Close $43.87 Range $37.97 - $49.46

Q3 2020

Shares 214,605 Value ($000) $10,438 Avg Close $41.40 Range $37.35 - $45.52

Q2 2020

Shares 205,726 Value ($000) $11,216 Avg Close $44.67 Range $39.68 - $50.33

Q1 2020

Shares 180,376 Value ($000) $10,792 Avg Close $54.52 Range $34.68 - $61.46

Q4 2019

Shares 182,310 Value ($000) $13,066 Avg Close $54.65 Range $51.50 - $57.67

Q3 2019

Shares 181,085 Value ($000) $13,590 Avg Close $54.27 Range $50.60 - $58.08

Q2 2019

Shares 64,260 Value ($000) $4,637 Avg Close $53.01 Range $50.21 - $55.53

Q1 2019

Shares 68,783 Value ($000) $4,843 Avg Close $48.59 Range $42.38 - $53.49

Q4 2018

Shares 71,807 Value ($000) $4,218 Avg Close $45.03 Range $41.21 - $48.18

Q3 2018

Shares 71,848 Value ($000) $4,215 Avg Close $43.15 Range $40.65 - $45.13

Q2 2018

Shares 46,965 Value ($000) $2,689 Avg Close $39.06 Range $37.03 - $41.93

Q1 2018

Shares 42,159 Value ($000) $2,268 Avg Close $37.69 Range $35.55 - $42.53

Q4 2017

Shares 36,702 Value ($000) $2,191 Avg Close $42.54 Range $39.78 - $45.45

Q3 2017

Shares 23,206 Value ($000) $1,321 Avg Close $41.74 Range $40.09 - $43.18

Q2 2017

Shares 20,197 Value ($000) $1,232 Avg Close $42.35 Range $40.29 - $44.62

Q1 2017

Shares 19,090 Value ($000) $1,121 Avg Close $39.52 Range $38.19 - $41.05

Q4 2016

Shares 18,897 Value ($000) $1,075 Avg Close $38.33 Range $36.64 - $40.23

Q3 2016

Shares 12,689 Value ($000) $730 Avg Close $40.31 Range $38.22 - $43.00

Q2 2016

Shares 11,191 Value ($000) $706 Avg Close $39.68 Range $37.02 - $42.70

Q1 2016

Shares 9,366 Value ($000) $579 Avg Close $38.33 Range $34.60 - $41.62

Q4 2015

Shares 14,136 Value ($000) $767 Avg Close $35.84 Range $33.71 - $37.52

Q3 2015

Shares 12,958 Value ($000) $697 Avg Close $34.01 Range $31.66 - $36.90

Q2 2015

Shares 16,749 Value ($000) $816 Avg Close $33.40 Range $31.54 - $35.25

Q1 2015

Shares 17,048 Value ($000) $915 Avg Close $35.30 Range $32.73 - $38.16

Q4 2014

Shares 17,587 Value ($000) $994 Avg Close $33.16 Range $28.63 - $37.51

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	41,999	$2,711	$62.82	$56.07 - $68.56
Q3 2025	56,305	$3,300	$54.14	$49.85 - $58.24
Q2 2025	54,468	$2,794	$53.53	$49.39 - $57.89
Q1 2025	317,212	$18,357	$52.06	$48.49 - $56.12
Q4 2024	357,290	$19,101	$51.38	$48.17 - $54.22
Q3 2024	395,227	$22,615	$49.89	$45.22 - $54.21
Q2 2024	405,604	$20,312	$46.58	$43.68 - $48.79
Q1 2024	415,097	$21,141	$44.40	$41.90 - $47.03
Q4 2023	432,277	$21,999	$44.88	$41.24 - $48.79
Q3 2023	435,800	$20,945	$47.33	$42.66 - $51.72
Q2 2023	409,744	$23,257	$51.34	$48.87 - $53.67
Q1 2023	379,312	$21,947	$49.59	$46.79 - $52.43
Q4 2022	370,625	$21,993	$46.84	$41.72 - $52.07
Q3 2022	340,527	$16,782	$46.61	$42.04 - $51.24
Q2 2022	306,126	$18,040	$49.98	$45.98 - $52.83
Q1 2022	267,938	$16,208	$48.63	$46.08 - $51.75
Q4 2021	290,616	$16,611	$46.70	$43.99 - $49.52
Q3 2021	227,915	$13,060	$50.51	$46.92 - $53.26
Q2 2021	223,197	$13,440	$52.44	$48.13 - $56.92
Q1 2021	313,265	$20,374	$47.20	$42.31 - $53.28
Q4 2020	244,930	$14,282	$43.87	$37.97 - $49.46
Q3 2020	214,605	$10,438	$41.40	$37.35 - $45.52
Q2 2020	205,726	$11,216	$44.67	$39.68 - $50.33
Q1 2020	180,376	$10,792	$54.52	$34.68 - $61.46
Q4 2019	182,310	$13,066	$54.65	$51.50 - $57.67
Q3 2019	181,085	$13,590	$54.27	$50.60 - $58.08
Q2 2019	64,260	$4,637	$53.01	$50.21 - $55.53
Q1 2019	68,783	$4,843	$48.59	$42.38 - $53.49
Q4 2018	71,807	$4,218	$45.03	$41.21 - $48.18
Q3 2018	71,848	$4,215	$43.15	$40.65 - $45.13
Q2 2018	46,965	$2,689	$39.06	$37.03 - $41.93
Q1 2018	42,159	$2,268	$37.69	$35.55 - $42.53
Q4 2017	36,702	$2,191	$42.54	$39.78 - $45.45
Q3 2017	23,206	$1,321	$41.74	$40.09 - $43.18
Q2 2017	20,197	$1,232	$42.35	$40.29 - $44.62
Q1 2017	19,090	$1,121	$39.52	$38.19 - $41.05
Q4 2016	18,897	$1,075	$38.33	$36.64 - $40.23
Q3 2016	12,689	$730	$40.31	$38.22 - $43.00
Q2 2016	11,191	$706	$39.68	$37.02 - $42.70
Q1 2016	9,366	$579	$38.33	$34.60 - $41.62
Q4 2015	14,136	$767	$35.84	$33.71 - $37.52
Q3 2015	12,958	$697	$34.01	$31.66 - $36.90
Q2 2015	16,749	$816	$33.40	$31.54 - $35.25
Q1 2015	17,048	$915	$35.30	$32.73 - $38.16
Q4 2014	17,587	$994	$33.16	$28.63 - $37.51