Company facts
- Industry
- Electric & Other Services Combined
- Headquarters
- Collinsville, Illinois
- Most recent report
- 10-Q, filed Aug 3, 2026
- Incorporated
- Illinois
- Filings on record
- 472 filings
- On EDGAR
- CIK 18654
- Fiscal year ends
- December
Financials 8 of 132
News 8 of 135
Prospectuses and Registrations 8 of 89
- 424B2 Prospectus supplement for an offering Aug 18, 2026
- FWP Free writing prospectus Aug 17, 2026
- 424B3 Prospectus supplement for an offering Aug 17, 2026
- S-3ASR Automatic shelf registration Aug 4, 2026
- 424B2 Prospectus supplement for an offering Sep 16, 2025
- FWP Free writing prospectus Sep 15, 2025
- 424B3 Prospectus supplement for an offering Sep 15, 2025
- 424B2 Prospectus supplement for an offering Feb 25, 2025
Proxies 8 of 13
- DEF 14A Proxy statement for a shareholder vote Mar 23, 2004
- DEF 14A Proxy statement for a shareholder vote Mar 27, 2003
- DEF 14A Proxy statement for a shareholder vote Mar 28, 2002
- DEF 14A Proxy statement for a shareholder vote Mar 26, 2001
- DEF 14A Proxy statement for a shareholder vote Mar 29, 2000
- DEF 14A Proxy statement for a shareholder vote Mar 29, 1999
- DEF 14A Proxy statement for a shareholder vote Mar 30, 1998
- DEF 14A Proxy statement for a shareholder vote Mar 7, 1997
Ownership 8 of 33
- 3 Insider reported their initial holding Aug 12, 2022
- 3 Insider reported their initial holding Jan 24, 2019
- 3 Insider reported their initial holding Jan 8, 2013
- 3 Insider reported their initial holding Jun 25, 2012
- 3 Insider reported their initial holding Jan 11, 2012
- SC 13G/A Large holder reported a passive stake, amended Jul 11, 2011
- 3 Insider reported their initial holding Apr 29, 2011
- SC 13G/A Large holder reported a passive stake, amended Jan 20, 2011
Other 8 of 70
Everything here comes from Ameren Illinois Co's own filings on SEC EDGAR. The filing list is rechecked every hour.