0000352541-21-000029.txt : 20210303 0000352541-21-000029.hdr.sgml : 20210303 20210303171547 ACCESSION NUMBER: 0000352541-21-000029 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210301 FILED AS OF DATE: 20210303 DATE AS OF CHANGE: 20210303 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: LARSEN JOHN O CENTRAL INDEX KEY: 0001483963 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-09894 FILM NUMBER: 21710421 MAIL ADDRESS: STREET 1: P O BOX 14720 CITY: MADISON STATE: WI ZIP: 53708-0720 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: ALLIANT ENERGY CORP CENTRAL INDEX KEY: 0000352541 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC & OTHER SERVICES COMBINED [4931] IRS NUMBER: 391380265 STATE OF INCORPORATION: WI FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 4902 NORTH BILTMORE LANE STREET 2: SUITE 1000 CITY: MADISON STATE: WI ZIP: 53718-2148 BUSINESS PHONE: 608-458-3311 MAIL ADDRESS: STREET 1: 4902 NORTH BILTMORE LANE STREET 2: SUITE 1000 CITY: MADISON STATE: WI ZIP: 53718-2148 FORMER COMPANY: FORMER CONFORMED NAME: INTERSTATE ENERGY CORP DATE OF NAME CHANGE: 19980427 FORMER COMPANY: FORMER CONFORMED NAME: WPL HOLDINGS INC DATE OF NAME CHANGE: 19920703 4 1 wf-form4_161480972422363.xml FORM 4 X0306 4 2021-03-01 0 0000352541 ALLIANT ENERGY CORP LNT 0001483963 LARSEN JOHN O C/O ALLIANT ENERGY CORPORATION PO BOX 14720 MADISON WI 53708-0720 1 1 0 0 President, Chairman and CEO Common Stock 2021-03-01 4 A 0 6764 47.09 A 106909.389 D Common Stock 2021-03-01 4 F 0 6654 47.09 D 100255.389 D Common Stock 10166.184 I By 401(k) Plan Vested performance shares payable all or part in shares pursuant to reporting person's prior election. Includes adjustments for accrued dividends, pursuant to a dividend reinvestment transaction exempt from Section 16 under Rule 16a-11. Reflects 401(k) holdings as of this filing date. /s/ Jake C. Blavat, Attorney-in-Fact 2021-03-03