Form 4 for CENX CENTURY ALUMINUM CO

Accepted 2026-01-05 00:00:00 ET · period of report 2025-12-31 · accession 0001628280-26-000499 · SEC index · Original document

Summary rows

Aggregated the way they appear in lists: one row per insider, transaction code and security table.

X	Filed	Traded	Ticker	Insider	Title	Type	Price	Qty	Owned	ΔOwn	Value
M	2026-01-05	2025-12-31+	CENX	Aboud Matt	SVP, Strategy, Business Dev't	A - Grant	$0.00	+42.1K	99.1K	+74%	$0
M	2026-01-05	2025-12-31	CENX	Aboud Matt	SVP, Strategy, Business Dev't	F - Tax	$39.18	-24.7K	74.4K	-25%	-$968.8K

Purchase Sale Sale after option exercise All abbreviations

#	Table	Security	Date	Code	A/D	Shares	Price	Owned after	Own	Exercise / expiry	Underlying	Footnotes
1	Common	Common Stock	2026-01-01	A	A	5,529	$0.00	79,940	D	—	—	(F4) Represents RSUs granted to the Reporting Person in connection with the Issuer's 2026-2028 Long-Term Incentive Plan under Rule 16b-3(d), all of which will vest on December 31, 2028, subject to the Plan's terms and conditions. (F5) Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans.
2	Common	Common Stock	2025-12-31	A	A	36,550	$0.00	99,139	D	—	—	(F1) Represents shares of common stock acquired by the Reporting Person upon the vesting of PSUs granted in connection with the Issuer's 2023-2025 Long-Term Incentive Plan under Rule 16b-3(d).
3	Common	Common Stock	2025-12-31	F	D	16,485	$39.18	82,654	D	—	—	(F2) Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of PSUs granted to the Reporting Person.
4	Common	Common Stock	2025-12-31	F	D	8,243	$39.18	74,411	D	—	—	(F3) Shares withheld by the Issuer to satisfy tax obligations in connection with the vesting of RSUs previously granted to the Reporting Person on January 1, 2023.