BlackRock, Inc. Increases Stake in Kaiser Aluminum Corp to 14.8%

On April 24, 2026, BlackRock, Inc. filed a Schedule 13G/A (Amendment No. 8) with the SEC, reporting a significant increase in its stake in Kaiser Aluminum Corp (KALU). As of the event date on March 31, 2026, BlackRock beneficially owns 2,401,692 shares of common stock, representing 14.8% of the company's outstanding shares. This marks a substantial increase from the previously reported 0.0% ownership position. The filing indicates that BlackRock holds sole dispositive power over all 2,401,692 shares and sole voting power over 2,376,449 shares. Notably, the iShares Core S&P Small-Cap ETF is identified as having an interest in the common stock exceeding 5% of the total outstanding shares. The securities were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer. BlackRock operates as a parent holding company for various subsidiaries that manage these holdings. This significant accumulation reflects a major institutional investment move into the aluminum producer.