NORTHWESTERN CORP

Ticker: NWE CUSIP: 668074305 Class: EQTY

ARROWSTREET CAPITAL, LIMITED PARTNERSHIP's Holding History (CIK: 0001164508)

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

Q4 2025

Shares 4,434 Value ($000) $286 Avg Close $62.82 Range $56.07 - $68.56

Q1 2025

Shares 32,027 Value ($000) $1,853 Avg Close $52.06 Range $48.49 - $56.12

Q3 2024

Shares 32,015 Value ($000) $1,832 Avg Close $49.89 Range $45.22 - $54.21

Q3 2020

Shares 78,549 Value ($000) $3,821 Avg Close $41.40 Range $37.35 - $45.52

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	4,434	$286	$62.82	$56.07 - $68.56
Q1 2025	32,027	$1,853	$52.06	$48.49 - $56.12
Q3 2024	32,015	$1,832	$49.89	$45.22 - $54.21
Q3 2020	78,549	$3,821	$41.40	$37.35 - $45.52