John De Zee Century Aluminum CO (CENX) insider trading activity

John De Zee is EVP, GC and Secretary of CENTURY ALUMINUM CO. Currently has a direct ownership of 163,647 shares of CENX, which is worth approximately $4.71 Million. The most recent transaction as insider was on Jan 01, 2026, when has been sold 9,821 shares (Common Stock) at a price of $0.0 per share, resulting in proceeds of $0. This information was disclosed in a Form 4 filing with the Securities and Exchange Commission (SEC).

Shares Held (Direct Ownership) 164K

23.12% 3M change

23.12% 12M change

Total Value Held $4.71 Million

John DeZee Transaction History

Date	Transaction	Value	Shares Traded	Shares Held
Jan 01 2026	BUY Grant, award, or other acquisition	-	9,821 Added 5.66%	163,647 Common Stock
Dec 31 2025	SELL Payment of exercise price or tax liability	$1,298,190 $39.18 p/Share	33,134 Reduced 17.72%	153,826 Common Stock
Dec 31 2025	BUY Grant, award, or other acquisition	-	54,042 Added 22.42%	186,960 Common Stock
Jan 01 2025	BUY Grant, award, or other acquisition	-	15,244 Added 10.29%	132,918 Common Stock
Dec 31 2024	SELL Payment of exercise price or tax liability	$186,663 $18.22 p/Share	10,245 Reduced 8.01%	117,674 Common Stock
Dec 31 2024	BUY Grant, award, or other acquisition	-	26,036 Added 16.91%	127,919 Common Stock
Jan 01 2024	BUY Grant, award, or other acquisition	-	23,707 Added 18.88%	101,883 Common Stock

Dec 31 2023	SELL Payment of exercise price or tax liability	$48,948 $12.14 p/Share	4,032 Reduced 4.9%	78,176 Common Stock
Dec 31 2023	BUY Grant, award, or other acquisition	-	4,114 Added 4.77%	82,208 Common Stock
Jan 01 2023	BUY Grant, award, or other acquisition	-	27,021 Added 25.71%	78,094 Common Stock
Dec 30 2022	SELL Payment of exercise price or tax liability	$49,439 $8.18 p/Share	6,044 Reduced 10.58%	51,073 Common Stock
Dec 30 2022	BUY Grant, award, or other acquisition	-	11,633 Added 16.92%	57,117 Common Stock
Mar 21 2022	SELL Open market or private sale	$422,533 $27.64 p/Share	15,287 Reduced 25.16%	45,484 Common Stock
Jan 01 2022	BUY Grant, award, or other acquisition	-	8,928 Added 12.81%	60,771 Common Stock
Dec 31 2021	SELL Payment of exercise price or tax liability	$123,024 $16.56 p/Share	7,429 Reduced 12.53%	51,843 Common Stock
Dec 31 2021	BUY Grant, award, or other acquisition	-	17,306 Added 23.32%	56,914 Common Stock
Jun 14 2021	BUY Grant, award, or other acquisition	-	3,598 Added 7.9%	41,966 Common Stock

John De Zee

EVP, GC and Secretary

Chicago, IL

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