---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-019676"
form_type: "8-K"
ticker: "AEE"
cik: "0001002910"
company_name: "AMEREN CORP"
filed_at: "2025-03-03T23:59:59+00:00"
generated_at: "2026-05-25T16:39:42.392991+00:00"
event_type: "debt"
sentiment: "neutral"
materiality_score: 0.55
calibrated_materiality_score: 0.55
confidence: "high"
source: SEC EDGAR
---

# Ameren Illinois issues $350M of 5.625% First Mortgage Bonds due 2055

## Summary
- $350M principal amount of 5.625% First Mortgage Bonds due 2055 sold on March 3, 2025.
- Net proceeds of ~$346.9M before expenses; offering under existing shelf registration.
- Underwriters: BNY Mellon, BofA, Morgan Stanley, and Truist Securities.
- Bonds are secured by a first mortgage on Ameren Illinois property; matures in 30 years.

## SEC filing metadata
- accession: 0001104659-25-019676
- form_type: 8-K
- ticker: AEE
- cik: 0001002910
- company_name: AMEREN CORP
- filed_at: 2025-03-03T23:59:59+00:00
- event_type: debt
- sentiment: neutral
- materiality_score: 0.55
- calibrated_materiality_score: 0.55
- confidence: high
- sec_items: 8.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1002910/000110465925019676/0001104659-25-019676-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/18654/000110465925019676/tm257258d5_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-019676
- JSON: https://secwatch.observer/filing/0001104659-25-019676.json
- Plain text: https://secwatch.observer/filing/0001104659-25-019676.txt

This AI-assisted summary is a reading aid. Review the linked SEC EDGAR filing before relying on any specific claim.