X0306 4 2022-02-01 0000066756 ALLETE INC ALE 0001435714 Adams Robert John 30 WEST SUPERIOR STREET DULUTH MN 55802 0 1 0 0 Sr VP and CFO Common Stock 2022-02-01 4 A 0 1319 0 A 7909.33 D Common Stock 11926.30 I By RSOP Trust Includes shares acquired in exempt transactions under: (a) the dividend reinvestment feature of ALLETE's stock purchase and dividend reinvestment plan, (b) ALLETE's employee stock purchase plan, and (c) the dividend equivalent feature of restricted stock grants pursuant to ALLETE's executive long-term incentive compensation plan; all based on plan information available as of January 31, 2022. Includes shares acquired in exempt transactions pursuant to ALLET's retirement savings and stock ownership plan (RSOP), based on RSOP plan information available as of January 31, 2022. Ingrid K. Johnson for Robert J. Adams 2022-02-03