ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

CenterBook Partners LP's Holding History (CIK: 0001872738)

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

Q3 2025

Shares 16,858 Value ($000) $1,371 Avg Close $81.04 Range $70.42 - $96.20

Q1 2025

Shares 17,791 Value ($000) $926 Avg Close $56.77 Range $49.07 - $66.80

Q4 2024

Shares 4,061 Value ($000) $224 Avg Close $58.97 Range $52.45 - $67.09

Q4 2022

Shares 7,865 Value ($000) $235 Avg Close $29.27 Range $25.39 - $31.74

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	16,858	$1,371	$81.04	$70.42 - $96.20
Q1 2025	17,791	$926	$56.77	$49.07 - $66.80
Q4 2024	4,061	$224	$58.97	$52.45 - $67.09
Q4 2022	7,865	$235	$29.27	$25.39 - $31.74