Alliant Energy Corporation Form 8-K Filing Summary

This Form 8-K filing reports the final results of voting on matters submitted to shareowners during the Alliant Energy Corporation annual meeting on May 20, 2026. The matters voted on included the election of directors, an advisory vote on executive compensation, and the ratification of Deloitte & Touche LLP as the independent registered public accounting firm for 2026. All nominees for director were elected, the executive compensation was approved on an advisory basis, and the appointment of the independent auditor was ratified. The filing details the vote counts for each matter, including votes for, against, abstentions, and broker non-votes where applicable. The report was signed by Omar N. Chaudhary, Corporate Secretary, on May 21, 2026.