ALLIANT ENERGY CORP

We maintain a legacy Directors’ Charitable Award Program in which only Ms. McAllister participated in 2023; this program was terminated for all directors who joined the Board after January 1, 2005. The purpose of the program was to recognize our directors’ interest in supporting worthy charitable institutions. Under the program, when a director dies, we will donate a total of $500,000 to up to five qualified charitable organizations selected by the individual director. The individual director derives no financial benefit from the program. We take all deductions for charitable contributions and fund the donations through life insurance policies on the director. Over the life of the program, all costs of donations and premiums on the life insurance policies, including a return of our cost of funds, will be recovered through life insurance proceeds on the director. In 2023, Ms. McAllister received no additional compensation for this program.