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Ameren Corp. SEC filings

In the twelve months since 22 September 2025 Ameren Corp. filed 29 documents with the SEC of the kinds listed here: 19 current reports (8-K), about 13 other events; 4 results of operations; 4 officer or director change; 2 regulation fd disclosure; 1 shareholder vote; 3 quarterly reports (10-Q), 2 shelf registrations (S-3ASR), 1 employee plan annual report (11-K), 1 annual report to shareholders (ARS), 1 additional proxy material (DEFA14A), 1 proxy statement (DEF 14A). The latest, filed 18 September 2026: 8-K, other events.

FiledFormWhat it was aboutPeriod or event dateFiling
18 September 20268-KOther events18 September 2026EDGAR
24 August 20268-KOther events24 August 2026EDGAR
4 August 20268-KOther events31 July 2026EDGAR
4 August 2026S-3ASRshelf registrationEDGAR
3 August 202610-Qquarterly report30 June 2026EDGAR
30 July 20268-KResults of operations, Other events30 July 2026EDGAR
29 June 20268-KOther events29 June 2026EDGAR
26 June 202611-Kemployee plan annual report31 December 2025EDGAR
26 June 20268-KOther events26 June 2026EDGAR
18 May 20268-KShareholder vote14 May 2026EDGAR
15 May 2026S-3ASRshelf registrationEDGAR
8 May 202610-Qquarterly report31 March 2026EDGAR
5 May 20268-KResults of operations, Other events5 May 2026EDGAR
31 March 2026ARSannual report to shareholders31 December 2025EDGAR
31 March 2026DEFA14Aadditional proxy materialEDGAR
31 March 2026DEF 14Aproxy statement14 May 2026EDGAR
4 March 20268-KOther events4 March 2026EDGAR
27 February 20268-KOther events27 February 2026EDGAR
18 February 202610-Kannual report31 December 2025EDGAR
11 February 20268-KResults of operations, Other events11 February 2026EDGAR
9 February 20268-KOfficer or director change, Regulation FD disclosure6 February 2026EDGAR
15 December 20258-KOfficer or director change, Regulation FD disclosure12 December 2025EDGAR
10 December 20258-KMaterial agreement, New financial obligation10 December 2025EDGAR
24 November 20258-KOther events24 November 2025EDGAR
6 November 202510-Qquarterly report30 September 2025EDGAR
5 November 20258-KResults of operations, Other events5 November 2025EDGAR
14 October 20258-KOfficer or director change14 October 2025EDGAR
3 October 20258-KOfficer or director change2 October 2025EDGAR
26 September 20258-KOther events26 September 2025EDGAR

An 8-K is what a company files within four business days of a material event; the SEC numbers the events, and the words here are the SEC's own headings, shortened. Form 4, Form 144, 13F and Schedule 13D and 13G have their own pages. Prospectus supplements and correspondence are not listed.

Source

The company's filing index on EDGAR, read from the SEC's submissions feed.

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