BlackRock, Inc. Increases Stake in Century Aluminum Co to 8.2%

BlackRock, Inc. has filed a Schedule 13G/A (Amendment No. 5) regarding its holdings in Century Aluminum Co (CENX). As of the event date on March 31, 2026, BlackRock reported beneficial ownership of 8,136,119 shares of common stock, representing an 8.2% stake in the company. This filing indicates an increase in holdings compared to the previously reported 0.0% position. Of the total shares held, BlackRock maintains sole voting power over 8,044,315 shares and sole dispositive power over the full 8,136,119 shares. The filing was made under Rule 13d-1(b), certifying that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. Various subsidiaries of BlackRock are identified as having acquired the shares, though no single person's interest exceeds 5% of the total outstanding common shares. The filing was signed by Spencer Fleming, Managing Director, on April 24, 2026.