Insider Transaction Report for Gary Jesse E

Gary Jesse E, President and CEO of CENTURY ALUMINUM CO (CENX), reported a sale of 150,000 shares of Common Stock on March 16, 2026, at a weighted average price of $55.47 per share. This transaction was executed as part of a Rule 10b5-1 trading plan, which is now complete as no further shares are available under the plan. The sale resulted in a post-transaction ownership of 142,580 shares held in a trust. Additionally, the filing notes that 277,227 shares are held indirectly, including unvested RSUs granted under the company's Long-Term Incentive Plans.