NASDAQ:CENX

Century Aluminum Company Stock Insider Trading

Basic Materials > Aluminum

Buy CENX

*Your capital is at risk

$67.04

-1.74 (-2.52%)

At Close: Jun 03, 2026

Century Aluminum Company Stock Insider Power

Based on the 100 latest insides trades, we have calculated the insider power to be negative at -96.78. In total, the insiders bought 6.82M and sold 1.71B CENX shares in the last 100 trades. The insider score can be negative despite buy/sell ratio being positive. The score focuses on the quality of the trades.

Insider Power (Last 100 transactions)	-96.78
● Buy	6.82M shares
● Sell	1.71B shares
42% Buy Activity Moderate Negative Correlation
Sell Signal High Confidence Nov 10, 2025 Analysis Breakdown: Strongly supported by a very low Insider Power Score of -96.78. Partially supported by a negative historical correlation. Confidence increased due to high data reliability score of 100.

Historical Insider Trades

Date	Type	Person	Role	Amount
Sep 30, 2025 Buy	Common Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	2 848 Value: $83.6K
Sep 30, 2025 Sell	Series A Convertible Preferred Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	28 Value: $0
Sep 30, 2025 Sell	Series A Convertible Preferred Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	28 Value: $0
Sep 30, 2025 Buy	Common Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	2 848 Value: $83.6K
Sep 26, 2025 Sell	Common Stock S-Sale	Hafberg Agust F SVP & Chief Commercial Officer	Officer	9 493 Value: $264.9K
Sep 26, 2025 Sell	Common Stock S-Sale	Hafberg Agust F SVP & Chief Commercial Officer	Officer	9 493 Value: $264.9K
Sep 19, 2025 Sell	Common Stock S-Sale	Calloway Kenneth L SVP, Human Resources	Officer	16 450 Value: $452.4K
Sep 19, 2025 Sell	Common Stock S-Sale	Calloway Kenneth L SVP, Human Resources	Officer	16 450 Value: $452.4K
Aug 12, 2025 Sell	Common Stock S-Sale	Aboud Matt SVP, Strategy & Business Dev't	Officer	12 027 Value: $279.9K
Aug 12, 2025 Sell	Common Stock S-Sale	Aboud Matt SVP, Strategy & Business Dev't	Officer	12 027 Value: $279.9K
Jun 30, 2025 Buy	Common Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	16 477 Value: $296.9K
Jun 30, 2025 Sell	Series A Convertible Preferred Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	165 Value: $0
Jun 30, 2025 Sell	Series A Convertible Preferred Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	165 Value: $0
Jun 30, 2025 Buy	Common Stock C-Conversion	Glencore International Ag 10 Percent Owner	10% Owner	16 477 Value: $296.9K
Jun 16, 2025 Buy	Common Stock A-Award	Glasser Errol Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Buy	Common Stock A-Award	Olivier Tamla A Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Buy	Common Stock A-Award	Michelmore Andrew G Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Sell	Common Stock F-InKind	Michelmore Andrew G Director	Director	2 333 Value: $40.5K
Jun 16, 2025 Buy	Common Stock A-Award	Bush Jennifer Mary Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Buy	Common Stock A-Award	Berntzen Jarl Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Buy	Common Stock A-Award	Berntzen Jarl Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Buy	Common Stock A-Award	Bush Jennifer Mary Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Sell	Common Stock F-InKind	Michelmore Andrew G Director	Director	2 333 Value: $40.5K
Jun 16, 2025 Buy	Common Stock A-Award	Michelmore Andrew G Director	Director	7 778 Value: $143.0K
Jun 16, 2025 Buy	Common Stock A-Award	Olivier Tamla A Director	Director	7 778 Value: $143.0K

About Insider Power

Insider Power is a proprietary algorithm developed by StockInvest.us to evaluate the significance of insider transactions. The calculation considers the size, type, and timing of transactions, as well as the insider’s role within the company.

It is important to note that, in general, there is little to no correlation between insider transactions and short-term stock price movements. In one of our studies, only 0.22%^* of stocks with insider activity showed a measurable correlation — and even then, it was unclear whether the effect was caused by insider actions or simply by the stock’s broader trend.

While our algorithms are designed to highlight potentially meaningful signals, these cannot be regarded as statistically significant on their own. Insider trading activity should therefore be seen as informative rather than as direct trading guidance. The Insider Power metric was created to present this information in a clearer and more accessible way, helping investors better understand the possible context of insider activity.

* October 6th, 2025 - Tested on 5562 stocks

ABOUT CENTURY ALUMINUM COMPANY

Century Aluminum Company, together with its subsidiaries, produces standard-grade and value-added primary aluminum products in the United States and Iceland. It also owns and operates a carbon anode production facility in the Netherlands. The company was incorporated in 1981 and is headquartered in Chicago, Illinois....

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