ALLETE Board of Directors Declares Stub Period Dividend on Common Stock

Group 1 - The board of directors of ALLETE, Inc. declared a "stub period" dividend of $0.008 per share, contingent upon the completion of the merger with Canada Pension Plan Investment Board and Global Infrastructure Partners [1] - The record date for the stub period dividend is set for October 16, 2025, and it is payable to all holders of Company common stock who retain their shares until the transaction closes [2] - The payment date for the stub period dividend will be the fifth business day following the closing of the merger transaction [2] Group 2 - ALLETE, Inc. is an energy company based in Duluth, Minnesota, operating electric utilities such as Minnesota Power and Superior Water, Light and Power of Wisconsin [3] - The company also owns ALLETE Clean Energy, BNI Energy, and New Energy Equity, and holds an 8% equity interest in the American Transmission Co [3]