On July 10, 2024, John O. Larsen, Executive Chairman and Chairman of the Board of Directors of Alliant Energy Corporation (Alliant Energy), Interstate Power and Light Company (IPL) and Wisconsin Power and Light Company (WPL, and together with Alliant Energy and IPL, the Companies), informed the Board of Directors that he plans to retain from his executive position at the Company effective on or before January 1, 2025. The Board of Directors confirmed him to the position of non-employee Chairman of the Board of the Companies effective upon his executive retirement.