Robert F. Hoffman - 04 Mar 2026 Form 4 Insider Report for CENTURY ALUMINUM CO (CENX)

Role
SVP, IT and CAO
Signature
/s/ Paul Sharobeem, attorney-in-fact for Robert F. Hoffman
Issuer symbol
CENX
Transactions as of
04 Mar 2026
Net transactions value
-$563,300
Form type
4
Filing time
06 Mar 2026, 17:58:46 UTC
Previous filing
05 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Hoffman Robert F SVP, IT and CAO C/O CENTURY ALUMINUM COMPANY, 1 S. WACKER DRIVE, SUITE 1000, CHICAGO /s/ Paul Sharobeem, attorney-in-fact for Robert F. Hoffman 06 Mar 2026 0001603836

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CENX Common Stock Sale $563,300 -10,000 -13% $56.33 67,172 04 Mar 2026 Direct F1, F2
holding CENX Common Stock 15 04 Mar 2026 By 401(k) plan F3
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $56.15 to $56.50, inclusive. The reporting person hereby undertakes to provide upon request to the SEC staff, the issuer or a security holder of the issuer full information regarding the specific number of shares and prices at which the transactions were effected.
F2 Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans.
F3 As reported by 401(k) plan trustee on March 4, 2026.