AEE 424B3: Secondary offering
Filed with the SEC on · accession 0001104659-26-105724
AEE filed a 424B3 (prospectus (offering)) with the SEC on Sep 8, 2026. Ameren Corporation is offering junior subordinated notes due 2057 in an underwritten public offering. The stock moved +0.2% by the first close after the filing.
Summary of the filing
Ameren Corporation is offering junior subordinated notes due 2057 in an underwritten public offering. The notes will bear interest at a fixed rate for the first 5.5 years and then reset quarterly based on the Five-Year Treasury Rate plus a spread.
Key details
How AEE stock reacted
Close before
$106.47
Sep 4, 2026
First close after
+0.24%
$106.73
5 trading days
-2.35%
$103.97
Since filing
+5.95%
$112.81
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Click hereFrequently asked questions
What did AEE file with the SEC on Sep 8, 2026?
AEE filed a 424B3 (Secondary offering). Ameren Corporation is offering junior subordinated notes due 2057 in an underwritten public offering. The notes will bear interest at a fixed rate for the first 5.5 years and then reset quarterly based on the Five-Year Treasury Rate plus a spread.
What does a secondary offering mean for AEE stock?
New shares dilute existing holders and are often sold at a discount to the market price.
How do I read a 424B3?
The final terms of an offering of shares or bonds. Look at price, number of shares and the discount to the market price. Large offerings dilute existing shareholders.
Why are SEC filings important?
Public companies must tell the SEC about anything that can change their value — results, leadership changes, big deals, new shares, bankruptcy. Filings are the official source, often before the news. A 424B3 (prospectus (offering)): The final terms of an offering of shares or bonds.
How did AEE stock react to this filing?
AEE closed at $106.47 before the filing and $106.73 on Sep 8, 2026 (+0.24%). Five trading days later: $103.97 (-2.35%).
Other AEE SEC filings
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