GLENCORE INTERNATIONAL AG - 04 Mar 2026 Form 4 Insider Report for CENTURY ALUMINUM CO (CENX)

Role
10%+ Owner
Signature
GLENCORE AG By: /s/ John Burton Name: John Burton Title: Attorney-in-Fact
Issuer symbol
CENX
Transactions as of
04 Mar 2026
Net transactions value
-$326,813,929
Form type
4
Filing time
04 Mar 2026, 16:53:11 UTC
Previous filing
13 Nov 2025
SEC
View on sec.gov

Reporting Owners (3)

Name Relationship Address Signature Signature date CIK
GLENCORE INTERNATIONAL AG 10%+ Owner BAARERMATTSTRASSE 3, P.O. BOX 1363, BAAR, SWITZERLAND GLENCORE AG By: /s/ John Burton Name: John Burton Title: Attorney-in-Fact 04 Mar 2026 0001032383
Glencore AG 10%+ Owner BAARERMATTSTRASSE 3, P.O. BOX 1363, BAAR, SWITZERLAND GLENCORE INTERNATIONAL AG By: /s/ John Burton Name: John Burton Title: Attorney-in-Fact 04 Mar 2026 0001449539
Glencore plc 10%+ Owner BAARERMATTSTRASSE 3, P.O. BOX 1363, BAAR, SWITZERLAND GLENCORE PLC By: /s/ John Burton Name: John Burton Title: Company Secretary 04 Mar 2026 0001521365

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction CENX Common Stock Sale $326,813,929 -6,315,245 -34% $51.75 12,184,755 04 Mar 2026 Direct F1
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 The Common Stock reported on Line 1 of Table I is held directly by Glencore International AG. Glencore International AG is wholly-owned by Glencore plc, which may be deemed an indirect beneficial owner of the securities held by Glencore AG and Glencore International AG.