X0508 4 2025-12-15 true 0000066756 ALLETE INC ALE 0001186165 NICK BARBARA A 30 WEST SUPERIOR STREET DULUTH MN 55802 true false Common Stock 2025-12-15 4 D 0 13631.26 67 D 0 D Includes shares acquired in exempt transactions under the dividend reinvestment feature of the direct stock purchase and dividend reinvestment plan of ALLETE, Inc., a Minnesota corporation (the "Company"), based on plan information available as of immediately prior to the Effective Time (as defined below). Pursuant to the terms of that certain Agreement and Plan of Merger (the "Merger Agreement"), dated as of May 5, 2024, by and among the Company, Alloy Parent LLC, a Delaware limited liability company ("Parent"), and Alloy Merger Sub LLC, a Delaware limited liability company and wholly owned subsidiary of Parent ("Merger Sub"), at the effective time on December 15, 2025 (the "Effective Time"), Merger Sub merged with and into the Company, with the Company surviving such merger (the "Merger") as a subsidiary of Parent. In connection with the Merger, each share of Company common stock, no par value ("Common Stock"), was automatically converted into the right to receive $67.00 in cash per share without interest (the "Merger Consideration"). The disposition of the securities by the Reporting Person in the Merger was approved by the Company's board of directors in the manner contemplated by Rule 16b-3 under the Securities Exchange Act of 1934, as amended. Julie L. Padilla for Barbara A. Nick 2025-12-16