Jesse E. Gary - 12 Jan 2026 Form 4 Insider Report for CENTURY ALUMINUM CO (CENX)

Role
President and CEO, Director
Signature
/s/ Paul Sharobeem, attorney-in-fact for Jesse E. Gary
Issuer symbol
CENX
Transactions as of
12 Jan 2026
Net transactions value
-$7,228,500
Form type
4
Filing time
23 Jan 2026, 19:17:00 UTC
Previous filing
05 Jan 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Gary Jesse E President and CEO, Director C/O CENTURY ALUMINUM COMPANY, 1 S. WACKER DRIVE, SUITE 1000, CHICAGO /s/ Paul Sharobeem, attorney-in-fact for Jesse E. Gary 23 Jan 2026 0001568817

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CENX Common Stock Gift $0 -314,611 -53% $0.000000 277,227 12 Jan 2026 Direct F1, F2
transaction CENX Common Stock Gift $0 +314,611 +246% $0.000000 442,580 12 Jan 2026 By Trust F1
transaction CENX Common Stock Sale $7,228,500 -150,000 -34% $48.19 292,580 23 Jan 2026 By Trust F3, F4, F5
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Buy Plan / Sale Plan: These are also open market purchases/sales of shares, but in this case the transaction is part of a trading plan. Rule 10b5-1 allows insiders to setup a trading plan to buy/sell stocks over a certain period of time. Since the purchases/sales are predetermined, this protects the insiders from violating insider trading law.

Transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c).

Explanation of Responses:

Id Content
F1 Represents shares transferred by the Reporting Person to a self-settled, revocable trust for estate planning purposes for which the Reporting Person serves as trustee.
F2 Includes unvested RSUs granted to the Reporting Person under the Issuer's Long-Term Incentive Plans.
F3 The reported transaction was effected pursuant to a Rule 10b5-1 trading plan adopted by the reporting person on August 20, 2025.
F4 The price reported above reflects the weighted average sale price for the shares which were sold in multiple transactions at prices ranging from $46.64 to $49.11, 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.
F5 Shares held in a self-settled, revocable trust for which the Reporting Person serves as trustee.