$AEE

Martin J. Lyons Jr.

Ameren

Chairman, President & CEO • Since 2025 • Utilities

📊 CEO Reputation Score

FY2025 vs FY2024 · Source: SEC EDGAR filings

80/100

Based on free-cash-flow improvement only — this company does not report a usable annual profit figure in its SEC filings.

Free cash flow: −$1.6B → −$775M (+50.2% YoY) — fiscal 2025 vs fiscal 2024

How this score works · S&P 500 reputation leaderboard

Overview

Martin J. Lyons Jr. is the chairman, president & ceo of Ameren since 2025. Ameren is a Utilities company headquartered in St. Louis, Missouri, founded in 1902, and one of the 500 companies in the S&P 500 — every one of which is profiled on this site.

Leadership

Martin holds the chief executive role at Ameren with the title Chairman, President & CEO — in post since 2025. This page is the concise leadership record for Ameren in the S&P 500 CEO index; the site's fully researched long-form profiles (career timelines, education, achievements, setbacks, philosophy and sourced quotes) currently cover the index's ten largest companies, and this entry will be expanded in the same format.

At a Glance

Sector: Utilities
Ticker: $AEE
Headquarters: St. Louis, Missouri
Founded: 1902
CEO since: 2025
Index: S&P 500 (#24 of 500)