ALLEGHENY TECHNOLOGIES INC

Ticker: ATI CUSIP: 01741R102 Class: EQTY

Optiver Holding B.V.'s Holding History (CIK: 0001859606)

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

Q3 2025

Shares 864 Value ($000) $70 Avg Close $81.04 Range $70.42 - $96.20

Q2 2025

Shares 231 Value ($000) $20 Avg Close $68.45 Range $39.23 - $87.75

Q1 2025

Shares 426 Value ($000) $22 Avg Close $56.77 Range $49.07 - $66.80

Q2 2024

Shares 949 Value ($000) $53 Avg Close $56.03 Range $47.90 - $62.44

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	864	$70	$81.04	$70.42 - $96.20
Q2 2025	231	$20	$68.45	$39.23 - $87.75
Q1 2025	426	$22	$56.77	$49.07 - $66.80
Q2 2024	949	$53	$56.03	$47.90 - $62.44