Ameren CorporationSEC Filings
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All SEC filings by Ameren Corporation (AEE) — annual and quarterly reports, current reports, registrations, proxies and ownership forms, updated in real time.
Financials
| 10-Q | Quarterly report | View Diff | Aug 3, 2026 | |
| 10-Q | Quarterly report | View Diff | May 7, 2026 | |
| ARS | Annual report to shareholders | Mar 31, 2026 | ||
| 10-K | Annual report | View Diff | Feb 18, 2026 | |
| 10-Q | Quarterly report | View Diff | Nov 6, 2025 | |
| 10-Q | Quarterly report | View Diff | Aug 4, 2025 | |
| 10-Q | Quarterly report | View Diff | May 5, 2025 | |
| ARS | Annual report to shareholders | Mar 25, 2025 | ||
| 10-K | Annual report | View Diff | Feb 18, 2025 | |
| 10-Q | Quarterly report | View Diff | Nov 7, 2024 |
Events
| 8-K | Current report | Aug 24, 2026 | ||
| 8-K | Current report | Aug 4, 2026 | ||
| 8-K | Ameren Announces Second Quarter 2026 Results | Jul 30, 2026 | ||
| 8-K | Current report | Jun 29, 2026 | ||
| 8-K | Current report | Jun 26, 2026 | ||
| 8-K | Submission of Matters to a Vote of Security Holders | May 18, 2026 | ||
| 8-K | Ameren Announces First Quarter 2026 Results | May 5, 2026 | ||
| 8-K | Other Events | Mar 4, 2026 | ||
| 8-K | Other Events | Feb 27, 2026 | ||
| 8-K | Ameren Announces 2025 Results, Affirms Guidance for 2026 Earnings | Feb 11, 2026 |
Registrations and Prospectuses
| 424B3 | Prospectus supplement | 6h ago | ||
| 424B5 | Prospectus supplement for primary offering | Aug 4, 2026 | ||
| S-3ASR | Automatic shelf registration | Aug 4, 2026 | ||
| S-3ASR | Automatic shelf registration | May 15, 2026 | ||
| 424B2 | Prospectus for primary offering | Feb 27, 2026 | ||
| FWP | Free writing prospectus | Feb 26, 2026 | ||
| FWP | Free writing prospectus | Feb 26, 2026 | ||
| 424B3 | Prospectus supplement | Feb 26, 2026 | ||
| 424B5 | Prospectus supplement for primary offering | Aug 7, 2025 | ||
| 424B2 | Prospectus for primary offering | May 13, 2025 |
Proxies
| DEFA14A | Additional proxy soliciting materials | Mar 31, 2026 | ||
| DEF 14A | Definitive proxy | View Diff | Mar 31, 2026 | |
| PX14A6G | Letter to shareholders | Apr 30, 2025 | ||
| DEFA14A | Additional proxy soliciting materials | Apr 28, 2025 | ||
| DEFA14A | Additional proxy soliciting materials | Mar 27, 2025 | ||
| DEFA14A | Additional proxy soliciting materials | Mar 25, 2025 | ||
| DEF 14A | Definitive proxy | View Diff | Mar 25, 2025 | |
| DEFA14A | Additional proxy soliciting materials | Apr 5, 2024 | ||
| DEFA14A | Additional proxy soliciting materials | Mar 26, 2024 | ||
| DEF 14A | Definitive proxy | View Diff | Mar 26, 2024 |
Other
| UPLOAD | Letter from SEC | Apr 18, 2024 | ||
| CORRESP | Correspondence with SEC | Apr 10, 2024 | ||
| UPLOAD | Letter from SEC | Mar 27, 2024 | ||
| NO ACT | No action letter | Jan 12, 2017 | ||
| UPLOAD | Letter from SEC | Jun 20, 2016 | ||
| CORRESP | Correspondence with SEC | Jun 16, 2016 | ||
| UPLOAD | Letter from SEC | Jun 8, 2016 | ||
| NO ACT | No action letter | Feb 26, 2015 | ||
| NO ACT | No action letter | Jan 9, 2013 | ||
| UPLOAD | Letter from SEC | Jun 15, 2012 |
Ownership
| 4 | Martin Ryan J | Aug 20, 2026 | ||
| 4 | Shaw Theresa A | Aug 17, 2026 | ||
| 4 | Moehn Michael L | Aug 5, 2026 | ||
| 144 | Notice of proposed sale of securities | Aug 3, 2026 | ||
| 4 | Smith Patrick E | Jul 6, 2026 | ||
| 4 | Melda Aaron P | Jul 6, 2026 | ||
| 4 | Arora Ajay K | Jul 6, 2026 | ||
| 11-K | Annual report of employee stock purchases | Jun 26, 2026 | ||
| 4 | Arora Ajay K | Jun 3, 2026 | ||
| 4 | Melda Aaron P | Jun 3, 2026 |