Insider Transaction Report for Olivier Tamla A

This filing details a transaction by Olivier Tamla A, a director at CENTURY ALUMINUM CO (CENX). On June 15, 2026, Tamla A received an annual grant of 2,172 restricted stock units (RSUs) with a transaction price of $0.00. These RSUs vest in full within 12 months, or upon the company's next annual stockholder meeting, or other specified events. Following this transaction, Tamla A holds a total of 31,845 shares. The filing also notes that this figure includes shares from vested RSUs where settlement has been deferred.