Form 4 Filing for Newport Roger K

Newport Roger K, a director at ALLIANT ENERGY CORP (LNT), acquired 769.494 units of Deferred Common Stock on April 10, 2026. The acquisition price was $73.10 per unit, bringing the total post-transaction shares to 31,445.967. The units are to be settled in common stock upon termination of services as a director. This transaction is noted under Form 4 and is exempt from Section 16 under Rule 16a-11 due to dividend reinvestment adjustments.