Capital International Investors Reduces Stake in ATI Inc. Below 5% Threshold

Capital International Investors (CII) filed a Schedule 13G/A on April 7, 2026, disclosing a reduced ownership stake in ATI Inc. As of the event date on March 31, 2026, CII beneficially owns 6,169,480 shares of ATI common stock, representing 4.5% of the total shares outstanding. This filing marks an amendment to previous disclosures, indicating that CII's holdings have fallen below the 5% threshold, as noted by the 'Item 5' certification regarding ownership of 5% or less. CII, a division of Capital Research and Management Company (CRMC), reported sole dispositive power over all 6,169,480 shares and sole voting power over 6,163,521 shares. The securities were acquired in the ordinary course of business and not for the purpose of influencing or changing the control of the issuer. The filing was signed by Aaron Espin, Senior Vice President, on April 2, 2026. The issuer, ATI Inc., is headquartered in Dallas, Texas.