Skip to main content
Signal8
Launch Terminal

Century Aluminum Co. (CENX)

Century Aluminum Co. (CENX) Insider Trading

Directors, officers and holders of more than 10% of CENX report their trades in its stock on SEC Form 4, within two business days. Each row below is one Form 4 transaction line. The one-letter code says what kind of transaction it was: only P (purchase) and S (sale) are open-market or private trades; awards, option exercises, tax withholding and gifts carry other codes.

Recent Form 4 transactions

The 50 most recent of 117 transactions on file: 0 with code P, 12 with code S and 38 with other codes.

DateInsiderCodeShares
Jun 15, 2026Olivier Tamla AA Award2,172
Jun 15, 2026Bush Jennifer MaryA Award2,172
Jun 15, 2026GLASSER ERROLA Award2,172
Jun 15, 2026Michelmore Andrew GF Tax Payment652
Jun 15, 2026Berntzen JarlA Award2,172
Jun 15, 2026Michelmore Andrew GA Award2,172
Mar 25, 2026Trpkovski Peter AS Sale16,739
Mar 16, 2026Gary Jesse ES Sale150,000
Mar 12, 2026Calloway Kenneth LS Sale18,000
Mar 11, 2026Hoffman Robert FS Sale10,529
Mar 4, 2026GLENCORE INTERNATIONAL AGS Sale6,315,245
Mar 4, 2026Hoffman Robert FS Sale10,000
Mar 3, 2026Aboud MattS Sale2,971
Mar 2, 2026Aboud MattS Sale12,126
Feb 27, 2026Hafberg Agust FS Sale22,884
Feb 25, 2026Gudlaugsson GunnarS Sale43,000
Feb 23, 2026DeZee JohnS Sale66,000
Feb 9, 2026Trpkovski Peter AF Tax Payment4,240
Jan 23, 2026Gary Jesse ES Sale150,000
Jan 12, 2026Gary Jesse EG Gift314,611
Jan 12, 2026Gary Jesse EG Gift314,611
Jan 1, 2026Hoffman Robert FA Award5,122
Jan 1, 2026Aboud MattA Award5,529
Jan 1, 2026Calloway Kenneth LA Award5,238
Jan 1, 2026Hafberg Agust FA Award5,238
Jan 1, 2026Gudlaugsson GunnarA Award15,624
Jan 1, 2026Gary Jesse EA Award57,443
Jan 1, 2026Trpkovski Peter AA Award13,488
Jan 1, 2026DeZee JohnA Award9,821
Dec 31, 2025DeZee JohnF Tax Payment11,971
Dec 31, 2025Trpkovski Peter AF Tax Payment4,045
Dec 31, 2025DeZee JohnF Tax Payment21,163
Dec 31, 2025Gudlaugsson GunnarF Tax Payment20,943
Dec 31, 2025DeZee JohnA Award54,042
Dec 31, 2025Gudlaugsson GunnarA Award82,794
Dec 31, 2025Trpkovski Peter AF Tax Payment8,090
Dec 31, 2025Aboud MattF Tax Payment8,243
Dec 31, 2025Hoffman Robert FF Tax Payment6,228
Dec 31, 2025Aboud MattF Tax Payment16,485
Dec 31, 2025Gudlaugsson GunnarF Tax Payment41,886
Dec 31, 2025Aboud MattA Award36,550
Dec 31, 2025Hoffman Robert FF Tax Payment12,455
Dec 31, 2025Trpkovski Peter AA Award18,260
Dec 31, 2025Hafberg Agust FF Tax Payment7,811
Dec 31, 2025Calloway Kenneth LF Tax Payment3,723
Dec 31, 2025Hafberg Agust FF Tax Payment15,622
Dec 31, 2025Hafberg Agust FA Award30,878
Dec 31, 2025Calloway Kenneth LF Tax Payment5,469
Dec 31, 2025Gary Jesse EF Tax Payment67,711
Dec 31, 2025Gary Jesse EF Tax Payment203,131

The full Form 4 history is on the CENX company page (Insider Trades card, View all).

Questions about this data

Which insider transactions are open-market trades?

Code P (open market or private purchase) and code S (open market or private sale). Code F is shares withheld to pay tax on vesting stock, A is an award from the company, M and X are option exercises and G is a gift. None of those is the insider choosing to buy or sell in the market.

How quickly are insider trades reported?

A Form 4 is due before the end of the second business day after the trade. The date shown is the transaction date from the form.

Who has to file Form 4?

Officers, directors and beneficial owners of more than 10% of a class of the company’s registered equity, under Section 16 of the Securities Exchange Act.

Look up any code in the Form 4 transaction code reference, or read Form 4 codes explained.