---
schema_version: "secwatch.filing_event.v1"
accession: "0001193125-21-296223"
form_type: "8-K"
ticker: "AEE"
cik: "0001002910"
company_name: "AMEREN CORP"
filed_at: "2021-10-12T23:59:59+00:00"
generated_at: "2026-06-28T21:16:41.606368+00:00"
event_type: "leadership"
sentiment: "neutral"
materiality_score: 0.7
calibrated_materiality_score: 0.7
confidence: "high"
source: SEC EDGAR
---

# Ameren names Marty Lyons as President and CEO effective Jan 1, 2022; Baxter becomes Executive Chairman

## Summary
- Martyn J. Lyons Jr. elected President and CEO effective Jan 1, 2022; current role Chairman and President of Ameren Missouri.
- Warner L. Baxter becomes Executive Chairman; remains employee, oversees key strategic matters.
- Lyons' base salary raised from $755K to $1.1M; STIP target 110% of base; LTIP target 375% of base.
- Baxter's base salary lowered from $1.3M to $1M; STIP target 100% of base; LTIP target 300% of base.
- By-laws amended effective Oct 8, 2021 to reflect roles of Chairman of the Board and CEO.

## SEC filing metadata
- accession: 0001193125-21-296223
- form_type: 8-K
- ticker: AEE
- cik: 0001002910
- company_name: AMEREN CORP
- filed_at: 2021-10-12T23:59:59+00:00
- event_type: leadership
- sentiment: neutral
- materiality_score: 0.7
- calibrated_materiality_score: 0.7
- confidence: high
- sec_items: 5.02, 5.03, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1002910/000119312521296223/0001193125-21-296223-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1002910/000119312521296223/d233683d8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001193125-21-296223
- JSON: https://secwatch.observer/filing/0001193125-21-296223.json
- Plain text: https://secwatch.observer/filing/0001193125-21-296223.txt

## Key facts
- Executive change
  Martin J. Lyons, Jr. was elected as President and Chief Executive Officer of the Company at AMEREN CORP.
  - Action: elected
  - Role: President and Chief Executive Officer of the Company
  source text: the election of Martin J. Lyons, Jr., Chairman and President of Union Electric Company, doing business as Ameren Missouri (“Ameren Missouri”), as President and Chief Executive Officer of the Company and as a member of the Board of Directors, effective January 1, 2022.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1002910/000119312521296223/0001193125-21-296223-index.htm
- Executive change
  Warner L. Baxter was elected as Executive Chairman of the Company at AMEREN CORP.
  - Action: elected
  - Role: Executive Chairman of the Company
  source text: Also effective January 1, 2022, Warner L. Baxter, the Company’s Chairman, President and Chief Executive Officer, was elected Executive Chairman of the Company and will remain a full-time employee and member of the Board of Directors.
  evidence_url: https://www.sec.gov/Archives/edgar/data/1002910/000119312521296223/0001193125-21-296223-index.htm

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