John DeZee - 23 Feb 2026 Form 4 Insider Report for CENTURY ALUMINUM CO (CENX)

Role
EVP, GC and Secretary
Signature
/s/ Paul Sharobeem, as attorney in fact for John DeZee
Issuer symbol
CENX
Transactions as of
23 Feb 2026
Net transactions value
-$3,347,520
Form type
4
Filing time
25 Feb 2026, 18:04:21 UTC
Previous filing
05 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
DeZee John EVP, GC and Secretary C/O CENTURY ALUMINUM COMPANY, 1 S. WACKER DRIVE, SUITE 1000, CHICAGO /s/ Paul Sharobeem, as attorney in fact for John DeZee 25 Feb 2026 0001863198

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CENX Common Stock Sale $3,347,520 -66,000 -40% $50.72 97,647 23 Feb 2026 Direct F1, F2
* 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 $49.91 to $52.01, 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.