---
schema_version: "secwatch.filing_event.v1"
accession: "0001104659-25-121146"
form_type: "8-K"
ticker: "AEE"
cik: "0001002910"
company_name: "AMEREN CORP"
filed_at: "2025-12-15T23:59:59+00:00"
generated_at: "2026-05-16T13:09:26.669832+00:00"
event_type: "leadership"
sentiment: "positive"
materiality_score: 0.25
calibrated_materiality_score: 0.25
confidence: "high"
source: SEC EDGAR
---

# Ameren elects Caterpillar CIO Jamie Engstrom to board, effective Jan 1, 2026

## Summary
- Jamie L. Engstrom, Global CIO and SVP of Caterpillar Inc., elected to the Ameren board, term starting Jan 1, 2026 and expiring at 2026 annual meeting.
- Engstrom appointed to Audit and Risk Committee and Cybersecurity and Digital Technology Committee.
- She brings expertise in information systems, risk management, cybersecurity, and digital transformations.
- Engstrom will participate in standard non-employee director compensation program as described in Ameren's 2025 proxy.
- No arrangement or understanding exists between Engstrom and Ameren or any other person regarding her selection as director.

## SEC filing metadata
- accession: 0001104659-25-121146
- form_type: 8-K
- ticker: AEE
- cik: 0001002910
- company_name: AMEREN CORP
- filed_at: 2025-12-15T23:59:59+00:00
- event_type: leadership
- sentiment: positive
- materiality_score: 0.25
- calibrated_materiality_score: 0.25
- confidence: high
- sec_items: 5.02, 7.01, 9.01
- EDGAR index: https://www.sec.gov/Archives/edgar/data/1002910/000110465925121146/0001104659-25-121146-index.htm
- EDGAR primary document: https://www.sec.gov/Archives/edgar/data/1002910/000110465925121146/tm2533374d1_8k.htm

## Machine-readable alternates
- HTML: https://secwatch.observer/filing/0001104659-25-121146
- JSON: https://secwatch.observer/filing/0001104659-25-121146.json
- Plain text: https://secwatch.observer/filing/0001104659-25-121146.txt

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