AMEREN CORP

Corporate structure

Significant subsidiaries, as filed

From Exhibit 21 of this company’s most recent annual report. The SEC requires only significant subsidiaries to be listed, so this is not a complete corporate family — it is exactly what AMEREN CORP filed.

Source: Exhibit 21, as filed with the SEC · accession 0001002910-26-000009

Reported financials

As filed with the SEC

Annual figures from this company’s own 10-K filings, tagged in XBRL. Restatements are reflected — where a year was refiled, the most recent value is shown.

Legal proceedings

As disclosed in the annual report

Item 3 of AMEREN CORP’s Form 10-K for fiscal 2025, filed 2026-02-18. This is the company’s own statement about its material legal proceedings — not a court record, and not a search of any docket.

The company answered Item 3 by pointing elsewhere in the same filing, which SEC rules permit (17 CFR 229.103(a)). Its full wording:

We are involved in legal and administrative proceedings before various courts and agencies with respect to matters that arise in the ordinary course of business, some of which involve substantial amounts of money. We believe that the final disposition of these proceedings, except as otherwise disclosed in this report, will not have a material adverse effect on our results of operations, financial position, or liquidity. Risk of loss is mitigated, in some cases, by insurance or contractual or statutory indemnification. We believe that we have established appropriate reserves for potential losses. For additional information on material legal and administrative proceedings, see Note 2 – Rate and Regulatory Matters , Note 9 – Callaway Energy Center , and Note 14 – Commitments and Contingencies under

Quoted from the filing as submitted to the SEC. Read Item 3 in the 10-K itself ↗

Filing activity

What AMEREN CORP files

Form types across the 1,000 filings in SEC EDGAR’s current filing index for this company, 2015-03-12 to 2026-08-24. EDGAR holds older filings beyond this window — the complete history is in its filing index.

Filing history

The 25 most recent filings

Of 1,000 in EDGAR’s current filing index for this company. Every filing, including older ones, is in the SEC’s own index ↗ .

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