ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

DARK FOREST CAPITAL MANAGEMENT LP's Holding History (CIK: 0001853322)

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

Q4 2025

Shares 9,542 Value ($000) $1,095 Avg Close $97.45 Range $79.29 - $117.48

Q2 2025

Shares 7,182 Value ($000) $620 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 64,436 Value ($000) $3,353 Avg Close $56.77 Range $49.07 - $66.80

Q1 2022

Shares 518 Value ($000) $13 Avg Close $23.18 Range $16.02 - $28.45

Q4 2021

Shares 1,137 Value ($000) $18 Avg Close $16.05 Range $13.85 - $18.33

Period	Shares	Value ($000)	Average Close	Price Range
Q4 2025	9,542	$1,095	$97.45	$79.29 - $117.48
Q2 2025	7,182	$620	$68.45	$39.23 - $87.75
Q1 2025	64,436	$3,353	$56.77	$49.07 - $66.80
Q1 2022	518	$13	$23.18	$16.02 - $28.45
Q4 2021	1,137	$18	$16.05	$13.85 - $18.33