CENX CENTURY ALUMINUM CO Insider Trading

CFO Peter Trpkovski sold 16,739 shares of CENX at $50.51 for $845,486.89, reducing holdings by 20.7%

Trpkovski, the CFO, executed a substantial reduction in his CENX stake, selling 16,739 shares (20.7% of his pre-transaction holdings) at $50.51 on 2026-03-25. The current price of $49.65 is 14.5% below the 52-week high of $58.07, and the stock has declined 6.4% over the past 30 days despite a 23.6% gain over 90 days, suggesting volatility in the name. The company's fundamentals show strong revenue growth of 13.8% year-over-year with $632.2M in latest quarterly revenue, yet the elevated P/E of 118.21 reflects stretched valuation relative to current $14.9M quarterly net income. The reduction by a C-suite executive merits attention in the context of current valuation multiples and near-term price weakness, though the company's revenue trajectory remains positive.

CEO Gary Jesse E sold 150,000 shares (150.0K shares) at $55.47; holdings halved from 292,580 to 142,580

CEO Gary Jesse E executed a substantial sale of 150,000 shares at $55.47, reducing his holdings by 51.3% from 292,580 to 142,580 shares. The sale occurred near the 52-week high ($58.07), with the stock currently at $56.49. At CENX specifically, his prior four measurable sales show mixed outcomes: only 1 of 4 were well-timed at the 90-day mark, with timing pattern showing less consistency than his cross-ticker record (20.00% well-timed rate across 6 prior sells). The company shows strong recent momentum (90-day return +75.9%, 30-day +22.7%) and solid fundamentals with annual revenue growth of +13.8%, though the elevated P/E of 134.50 reflects significant market valuation. The scale and timing of this reduction warrant investor attention given the magnitude of the stake reduction and current price proximity to recent highs.

SVP Calloway sells 18,000 CENX shares at $58.00, reducing holdings 42% to 24.9K shares

Calloway Kenneth L, SVP of Human Resources at Century Aluminum, sold 18,000 shares at $58.00 on 2026-03-12, reducing his holdings from 42,902 shares to 24.9K shares—a 42.0% reduction. The sale occurred near the 52-week high of $58.07, with the stock currently trading at $54.73, down 5.8% from peak. While the company shows solid fundamentals with quarterly revenue of $632.2M and annual revenue growth of 13.8%, the elevated P/E of 130.31 reflects modest profitability ($14.9M net income) relative to valuation. The sale represents a material reduction in the insider's direct equity stake, occurring at a price level historically strong for the stock.

Glencore International sold 6,315,245 shares (34.1% reduction) of CENX at $51.75 for $326.8M on 2026-03-04

Glencore International, a 10% shareholder, executed a substantial open-market sale of 6,315,245 shares (6.32M shares) at $51.75 on 2026-03-04, reducing holdings from 18,500,000 shares to 12,184,755 shares—a -34.1% reduction in position size. The sale occurred at $51.75, just 3.0% below the current price of $53.43 and near the 52-week high of $54.36, capturing most of recent upward momentum (+12.9% over 30 days, +73.1% over 90 days). Notably, Glencore's prior sell at this same ticker on 2025-11-10 posted a +73.2% 90-day return, meaning the stock rose significantly after that prior sale—indicating the insider's prior sells at CENX have not been well-timed (0 of 1 prior sells at CENX were well-timed at the 90-day mark). This current sale, while executed near recent highs, still departs from the insider's historical outcomes: whether this large position reduction signals a shift in conviction relative to CENX's 127.21 P/E and $5.3B market cap warrants monitoring.

SVP & Chief Commercial Officer Hafberg sold 22,884 shares (33.7% of holdings) at $51.24; stock near 52-week high of $54.36

Hafberg Agust F, SVP & Chief Commercial Officer, executed a substantial sale of 22,884 shares representing 33.7% of his pre-transaction holdings, reducing his stake from 67,943 to 45,059 shares. The sale occurred at $51.24 per share, near the stock's 52-week high of $54.36 and amid strong recent momentum: the stock has risen 71.0% over 90 days and 16.7% over 30 days. Against fundamentals showing 13.8% annual revenue growth and a market capitalization of $5,237,706,567.24, the elevated P/E of 126.00 reflects a premium valuation. The significance of this transaction lies in the magnitude of the equity reduction by a senior commercial executive—a material decrease in skin-in-the-game at a point of elevated stock price relative to historical range, warranting investor attention to the executive's confidence level in near-term prospects and any associated business developments.

EVP Gudlaugsson sells 43,000 CENX shares at $54.10; holds 136,393 shares post-sale (-24.0%)

Gunnar Gudlaugsson, EVP of Global Operations at Century Aluminum, executed a substantial sale of 43,000 shares at $54.10, reducing his holdings by 24.0% to 136,393 shares. The sale occurred near the 52-week high of $54.36, though the stock has since declined 5.2% to $51.56. The company's fundamentals show modest growth (annual revenue growth +1.6%) with a notably elevated P/E ratio of 56.66 relative to net income of $14.9M on quarterly revenue of $632.2M, suggesting the stock may be pricing in strong forward expectations. Investors should monitor whether this concentrated reduction in holdings reflects executive views on valuation or near-term aluminum market fundamentals.

EVP DeZee John sells 66,000 CENX shares at $50.72 for $3.3M, reducing stake by 40.3% to 97,647 shares

DeZee John, as EVP, General Counsel and Secretary, sold 66,000 shares at $50.72, representing a 40.3% reduction in his holdings from 163,647 shares pre-transaction. The sale occurred near the 52-week high ($54.36), with the stock having appreciated 84.4% over 90 days and 17.5% over 30 days, suggesting substantial recent momentum. At a P/E of 58.26 with annual revenue growth of only 1.6% and net income of $14.9M on $632.2M in quarterly revenue, the valuation reflects elevated multiples relative to growth fundamentals. The magnitude of the stake reduction—removing 40% of his position—warrants investor scrutiny given the executive's senior legal and governance role.

CEO Gary Jesse E sold 150,000 CENX shares at $48.19 on 2026-01-23, reducing stake by 33.9% to 292,580 shares.

Gary Jesse E, the President and CEO of Century Aluminum, sold 150,000 shares (150.0K shares) for $7,228,500.00 ($7.2M) on 2026-01-23, reducing his holdings from 442,580 shares (442.6K shares) to 292,580 shares (292.6K shares)—a 33.9% reduction in his position. The sale occurred at $48.19, near the current price of $48.71 and at the 52-week high, following a sharp 23.9% gain over 30 days and 58.2% gain over 90 days. However, his historical timing pattern at this ticker has been mixed: across 5 prior CENX sales, only 1 was well-timed at the 90-day mark, with two recent December 2024 sales showing modest positive 90-day returns of 3.6% and 0.2%—meaning the stock continued to rise after his prior sales. This large reduction in CEO stake merits attention given the price momentum and the company's elevated P/E of 53.53 relative to annual revenue growth of +1.6%, though the discretionary nature of the sale and the absence of any other coordinated insider activity limit the immediate signal strength.

Glencore sells 9.00M CENX shares (34% of holding) for $272.2M at $30.25, reducing stake to 17.51M shares

Glencore International AG, a 10% owner, sold 9,000,000 shares of Century Aluminum for $272,250,000.00, reducing its position from 26,505,947 to 17,505,947 shares—a 34.0% reduction. The sale occurred at $30.25 per share, which represents a 3.7% premium to the current market price of $29.04, though $30.25 remains 15.2% below the 52-week high of $34.26. The company's valuation shows a P/E of 31.91 against quarterly revenue of $632,200,000.00 and net income of $14,900,000.00, suggesting a capital-intensive business with modest profitability relative to its $2.7B market cap. This substantial partial reduction in a major stakeholder's position warrants investor attention given the magnitude of shares sold and resulting shift in ownership structure, though Glencore retains a material 17.51M-share stake.

CEO Gary Jesse E sells 79,243 shares (99.1% of holdings) for $1,478,739.71 across 2 sales on 2024-12-26 to 2024-12-27

Gary Jesse E, as President and CEO, executed 2 separate sales totaling 79,243 shares for $1,478,739.71 over December 26–27, 2024, reducing his holdings from 80.0K shares to just 753 shares. This near-complete exit—selling 99.1% of his position—represents a material departure from his trading pattern at Century Aluminum. His 3 prior sales at CENX show mixed results: the most recent sale on 2024-06-26 suffered a 4.9% 30-day decline and 5.1% 90-day decline, while the two December 2023 sales had negative 30-day returns but positive 90-day returns. The company's fundamentals add context: CENX reported negative net income of $-2.5M in its latest quarter, annual revenue contracted 21.3%, and the stock has fallen 20.2% over the past 30 days and 23.8% from its 52-week high of $23.94. At the blended transaction price of $18.66, the CEO is liquidating substantially at an 18.1% discount to the 52-week peak.