Ameren Corp. operates as a public utility holding company that provides electric and natural gas services. It operates through the following business segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission. The Ameren Missouri segment includes all of the operations of Ameren Missouri. The Ameren Illinois Electric Distribution segment consists of the electric distribution business of Ameren Illinois. The Ameren Illinois Natural Gas segment consists of the natural gas business of Ameren Illinois. The Ameren Transmission segment primarily consists of the aggregated electric transmission businesses of Ameren Illinois and ATXI. The company was founded in 1902 and is headquartered in St. Louis, MO.
Company profile
Website
CEO
Warner L. Baxter
Employees
Incorporated
Location
Fiscal year end
Industry (SIC)
SEC CIK
Corporate docs
Latest filings (excl ownership)
15-12B
Securities registration termination
12 Jan 11
AW
Withdrawal of amendment
11 Jan 11
POS AM
Prospectus update (post-effective amendment)
21 Dec 10
POSASR
Automatic shelf registration (post-effective amendment)
21 Dec 10
10-Q
2010 Q3
Quarterly report
8 Nov 10
8-K
Entry into a Material Definitive Agreement
13 Sep 10
8-K
Submission of Matters to a Vote of Security Holders
1 Sep 10
10-Q
2010 Q2
Quarterly report
9 Aug 10
8-K
Ameren Corporation Announces Creation of Separate
2 Aug 10
10-Q
2010 Q1
Quarterly report
10 May 10
Latest ownership filings
11-K
Annual report of employee stock purchases
1 Jul 02
11-K
Annual report of employee stock purchases
1 Jul 02
11-K
Annual report of employee stock purchases
17 Oct 01
11-K
Annual report of employee stock purchases
17 Oct 01
11-K
Annual report of employee stock purchases
29 Jun 00
11-K
Annual report of employee stock purchases
29 Jun 00
11-K
Annual report of employee stock purchases
29 Jun 99
11-K
Annual report of employee stock purchases
29 Jun 99
11-K
Annual report of employee stock purchases
18 Jun 98
11-K
Annual report of employee stock purchases
18 Jun 98