SEC Filing Summary

Stephanie Cox, a director at Alliant Energy Corp, acquired 547.196 units of Deferred Common Stock Units on April 10, 2026. The transaction, valued at $73.10 per unit, brings her total holdings to 17,253.451 units. The units are set to be settled in common stock upon her termination of services as a director. The filing also notes adjustments for accrued dividends, which are exempt from Section 16 under Rule 16a-11.