CENTURY ALUM CO

Ticker: CENX CUSIP: 156431108 Class: EQTY

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

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

Q3 2025

Shares 290 Value ($000) $9 Avg Close $22.67 Range $17.75 - $30.08

Q2 2025

Shares 212 Value ($000) $4 Avg Close $16.98 Range $13.05 - $20.43

Q1 2025

Shares 212 Value ($000) $4 Avg Close $19.21 Range $16.30 - $22.92

Q4 2024

Shares 212 Value ($000) $4 Avg Close $19.65 Range $14.89 - $25.39

Q3 2024

Shares 30 Value ($000) $0 Avg Close $15.15 Range $11.40 - $21.37

Q2 2024

Shares 429 Value ($000) $7 Avg Close $17.02 Range $14.73 - $19.88

Period	Shares	Value ($000)	Average Close	Price Range
Q3 2025	290	$9	$22.67	$17.75 - $30.08
Q2 2025	212	$4	$16.98	$13.05 - $20.43
Q1 2025	212	$4	$19.21	$16.30 - $22.92
Q4 2024	212	$4	$19.65	$14.89 - $25.39
Q3 2024	30	$0	$15.15	$11.40 - $21.37
Q2 2024	429	$7	$17.02	$14.73 - $19.88