<SEC-DOCUMENT>0000352541-18-000059-index.html : 20180612 <SEC-HEADER>0000352541-18-000059.hdr.sgml : 20180612 <ACCEPTANCE-DATETIME>20180612170841 ACCESSION NUMBER: 0000352541-18-000059 CONFORMED SUBMISSION TYPE: 8-K PUBLIC DOCUMENT COUNT: 4 CONFORMED PERIOD OF REPORT: 20180606 ITEM INFORMATION: Entry into a Material Definitive Agreement ITEM INFORMATION: Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant ITEM INFORMATION: Other Events ITEM INFORMATION: Financial Statements and Exhibits FILED AS OF DATE: 20180612 DATE AS OF CHANGE: 20180612 FILER: 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 FILING VALUES: FORM TYPE: 8-K SEC ACT: 1934 Act SEC FILE NUMBER: 001-09894 FILM NUMBER: 18895184 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 </SEC-HEADER> <DOCUMENT> <TYPE>8-K <SEQUENCE>1 <FILENAME>lnt060620188-k.htm <DESCRIPTION>8-K <TEXT> Document 1 - file: lnt060620188-k.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-4.1 <SEQUENCE>2 <FILENAME>lnt060620188-kexh41.htm <DESCRIPTION>EXHIBIT 4.1 <TEXT> Document 2 - file: lnt060620188-kexh41.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>3 <FILENAME>lnt060620188-kexh991.htm <DESCRIPTION>EXHIBIT 99.1 <TEXT> Document 3 - file: lnt060620188-kexh991.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>alliantenergylogo.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: alliantenergylogo.jpg
</DOCUMENT> </SEC-DOCUMENT>