Kenneth L. Calloway - Mar 12, 2024 Form 3 Insider Report for CENTURY ALUMINUM CO (CENX)

Role: SVP, Human Resources
Signature: /s/ Paul Sharobeem, attorney-in-fact for Kenneth L. Calloway
Stock symbol: CENX
Transactions as of: Mar 12, 2024
Transactions value $: $0
Form type: 3
Date filed: 3/13/2024, 04:47 PM

Transactions Table

Type	Sym	Class	Transaction	Value $	Shares	Change %	* Price $	Shares After	Date	Ownership	Footnotes
holding	CENX	Common Stock						34.5K	Mar 12, 2024	Direct	F1

* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id	Content
F1	Includes the following: (i) 11,099 shares of common stock acquired by the Reporting Person, (ii) 2,492 unvested Time Vested Stock Units ("TVSUs") granted to the Reporting Person pursuant to the Issuer's 2022-2024 Long-Term Incentive Plan, all of which will vest on December 31, 2024; (iii) 9,075 unvested TVSUs granted to the Reporting Person pursuant to the Issuer's 2023-2025 Long-Term Incentive Plan, all of which will vest on December 31, 2025; and (iv) 11,841 unvested TVSUs granted to the Reporting Person pursuant to the Issuer's 2024-2026 Long-Term Incentive Plan, all of which will vest on December 31, 2026.

Content

Includes the following: (i) 11,099 shares of common stock acquired by the Reporting Person, (ii) 2,492 unvested Time Vested Stock Units ("TVSUs") granted to the Reporting Person pursuant to the Issuer's 2022-2024 Long-Term Incentive Plan, all of which will vest on December 31, 2024; (iii) 9,075 unvested TVSUs granted to the Reporting Person pursuant to the Issuer's 2023-2025 Long-Term Incentive Plan, all of which will vest on December 31, 2025; and (iv) 11,841 unvested TVSUs granted to the Reporting Person pursuant to the Issuer's 2024-2026 Long-Term Incentive Plan, all of which will vest on December 31, 2026.