Jillian C. Evanko Resigns from the Boards and All Committees of Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company

On January 27, 2021, Jillian C. Evanko informed the Chair of the Boards of Directors of Alliant Energy Corporation, Interstate Power and Light Company and Wisconsin Power and Light Company that she resigned from the Boards and all committees of the Boards effective on January 27, 2021 in order to comply with the Boards’ policy on over boarding of directors.