<SEC-DOCUMENT>0001104659-21-039970-index.html : 20210323 <SEC-HEADER>0001104659-21-039970.hdr.sgml : 20210323 <ACCEPTANCE-DATETIME>20210323060842 ACCESSION NUMBER: 0001104659-21-039970 CONFORMED SUBMISSION TYPE: DEFA14C PUBLIC DOCUMENT COUNT: 5 FILED AS OF DATE: 20210323 DATE AS OF CHANGE: 20210323 FILER: COMPANY DATA: COMPANY CONFORMED NAME: Ameren Illinois Co CENTRAL INDEX KEY: 0000018654 STANDARD INDUSTRIAL CLASSIFICATION: ELECTRIC & OTHER SERVICES COMBINED [4931] IRS NUMBER: 370211380 STATE OF INCORPORATION: IL FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: DEFA14C SEC ACT: 1934 Act SEC FILE NUMBER: 001-03672 FILM NUMBER: 21763080 BUSINESS ADDRESS: STREET 1: 10 EXECUTIVE DRIVE CITY: COLLINSVILLE STATE: IL ZIP: 62234 BUSINESS PHONE: 618-343-8150 MAIL ADDRESS: STREET 1: 10 EXECUTIVE DRIVE CITY: COLLINSVILLE STATE: IL ZIP: 62234 FORMER COMPANY: FORMER CONFORMED NAME: CENTRAL ILLINOIS PUBLIC SERVICE CO DATE OF NAME CHANGE: 19920703 </SEC-HEADER> <DOCUMENT> <TYPE>DEFA14C <SEQUENCE>1 <FILENAME>tm216254d3_defa14c.htm <DESCRIPTION>DEFA14C <TEXT> Document 1 - file: tm216254d3_defa14c.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>tm216254d3_defa14aimg01.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 2 - file: tm216254d3_defa14aimg01.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>tm216254d3_defa14aimg02.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: tm216254d3_defa14aimg02.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>tm216254d3_defa14aimg03.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: tm216254d3_defa14aimg03.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>5 <FILENAME>tm216254d3_defa14aimg04.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 5 - file: tm216254d3_defa14aimg04.jpg
</DOCUMENT> </SEC-DOCUMENT>