---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-096700"
form_type: "8-K"
ticker: "AEE"
cik: "0001002910"
company_name: "AMEREN CORP"
filed_at: "2025-10-03T23:59:59+00:00"
generated_at: "2026-05-17T04:41:28.668695+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.45
calibrated_materiality_score: 0.45
confidence: "high"
source: SEC EDGAR
---

# Ameren Missouri Chairman/President Birk retires; CFO Moehn named interim successor

## Summary
- Mark C. Birk retired as Chairman and President of Ameren Missouri and all subsidiary roles, effective October 2, 2025.
- Michael L. Moehn, Ameren Corp CFO since 2019, appointed Interim Chairman and President of Ameren Missouri.
- Moehn previously held the same role at Ameren Missouri from 2014 to 2019 before becoming CFO.
- Moehn will continue to serve as Senior Executive VP and CFO of Ameren Corporation.

## SEC filing metadata
- accession: 0001104659-25-096700
- form_type: 8-K
- ticker: AEE
- cik: 0001002910
- company_name: AMEREN CORP
- filed_at: 2025-10-03T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.45
- calibrated_materiality_score: 0.45
- confidence: high
- sec_items: 5.02
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1002910/000110465925096700/0001104659-25-096700-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1002910/000110465925096700/tm2527908d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-096700
- JSON: https://secwatch.observer/filing/0001104659-25-096700.json
- Plain text: https://secwatch.observer/filing/0001104659-25-096700.txt

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