NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

SIMPLEX TRADING, LLC's Holding History (CIK: 0001488542)

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

Q3 2025

Shares 2 Value ($000) $0 Avg Close $54.14 Range $49.85 - $58.24

Q2 2024

Shares 1,121 Value ($000) $0 Avg Close $46.58 Range $43.68 - $48.79

Q3 2022

Shares 75 Value ($000) $3 Avg Close $46.61 Range $42.04 - $51.24

Q4 2020

Shares 1,050 Value ($000) $61 Avg Close $43.87 Range $37.97 - $49.46

Q1 2018

Shares 89 Value ($000) $4 Avg Close $37.69 Range $35.55 - $42.53

Q4 2016

Shares 132 Value ($000) $7 Avg Close $38.33 Range $36.64 - $40.23

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	2	$0	$54.14	$49.85 - $58.24
Q2 2024	1,121	$0	$46.58	$43.68 - $48.79
Q3 2022	75	$3	$46.61	$42.04 - $51.24
Q4 2020	1,050	$61	$43.87	$37.97 - $49.46
Q1 2018	89	$4	$37.69	$35.55 - $42.53
Q4 2016	132	$7	$38.33	$36.64 - $40.23