BlackRock, Inc. Reduces Stake in Perspective Therapeutics Inc (CATX) Below 5% Threshold

BlackRock, Inc. filed a Schedule 13G/A on April 27, 2026, disclosing a 4.6% ownership stake in Perspective Therapeutics Inc (CATX). As of the event date on March 31, 2026, BlackRock beneficially owns 5,251,363 shares of common stock. This filing represents an amendment to a previous position, indicating that BlackRock's ownership has fallen below the 5% threshold, as noted by the 'Yes' selection for Item 5 regarding ownership of 5% or less. Of the total shares held, BlackRock reports sole voting power over 5,189,434 shares and sole dispositive power over all 5,251,363 shares. The filing indicates that the securities were acquired in the ordinary course of business and not for the purpose of influencing or changing control of the issuer. Various subsidiaries of BlackRock are listed as having acquired the reported shares. Perspective Therapeutics is headquartered in Seattle, Washington.