Ameren Corporation

Last updated September 27, 2026

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Organization details

Legal name: Ameren Corporation
Ownership: Public
Status: Active
Sector (GICS): Utilities
SIC code: 4931 — Electric & Other Services Combined
Jurisdiction of incorporation: Missouri
Headquarters city: ST Louis
Headquarters state / province: Missouri
Headquarters country: United States
Fiscal year end: December
Ticker symbol: AEE
Primary stock exchange: NYSE

Identifiers

SEC CIK: 0001002910
EIN: 43-1723446
Wikidata ID: Q462984

Board of directors

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Catherine S. Brune · Director
Since 2023
Craig S. Ivey · Director
Since 2023
Cynthia J. Brinkley · Director
Since 2023
Ellen M. Fitzsimmons · Director
Since 2023
J. Edward Coleman · Director
Since 2023
James C. Johnson · Director
Since 2023
Jamie L. Engstrom · Director
Since 2026
Kimberly J. Harris · Director
Since 2024
Leo S. Mackay Jr. · Director
Since 2023
Martin J. Lyons · Director · Chairman, President & CEO
Since 2023
Noelle K. Eder · Director
Since 2023
Rafael Flores · Director
Since 2023
Richard J. Harshman · Director
Since 2023
Steven H. Lipstein · Director
Since 2023
Steven O. Vondran · Director
Since 2025
Timothy S. Rausch · Director
Since 2026
Ward H. Dickson · Director
Since 2023
Warner L. Baxter · Director · Executive Chairman
Since 2023

Chief executives

Martin J. Lyons · President & CEO

Dates unknown

Director election results

Annual meeting of May 14, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.

Board connections

9 of this board's directors also sit on 12 other boards. 2 are in the same sector.

Shared director Other board Same sector

Energizer Holdings Inc.
via Cynthia J. Brinkley and James C. Johnson
U.S. Bancorp
via Kimberly J. Harris and Warner L. Baxter
American Tower Corporation (REIT)
via Steven O. Vondran
American Water Works Company Inc. Same sector
via Kimberly J. Harris
Avery Dennison Corporation
via Ward H. Dickson
Cognizant Technology Solutions Corporation
via Leo S. Mackay Jr.
Edgewell Personal Care Company
via James C. Johnson
Kennametal Inc.
via Richard J. Harshman
Martin Marietta Materials Inc.
via Martin J. Lyons
Quanta Services Inc.
via Warner L. Baxter
The PNC Financial Services Group Inc.
via Richard J. Harshman
WEC Energy Group Inc. Same sector
via Warner L. Baxter

Insider trades

All notable trades →

From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.

Bought, last 12 months: $0; 0 purchases by 0 insiders
Sold, last 12 months: $8,657,031; 22 sales by 11 insiders

Date	Insider	Transaction	Shares	Price	Value
Nov 3, 2026	Michael L. Moehn Officer (Group President, Utilities)	Open-market sale	−6,500	$110.72	$719,680
Sep 11, 2026	Rafael Flores Director	Open-market sale	−248	$105.53	$26,171
Aug 20, 2026	Martin Ryan J Officer (SVP Finance)	Open-market sale	−500	$109.88	$54,940
Aug 18, 2026	Martin Ryan J Officer (SVP Finance)	Open-market sale	−471	$109.87	$51,749
Aug 14, 2026	Shaw Theresa A Officer (SVP and CATO)	Open-market sale	−325	$108.93	$35,402
Aug 3, 2026	Michael L. Moehn Officer (Group President, Utilities)	Open-market sale	−6,500	$108.96	$708,240
Jul 1, 2026	Arora Ajay K Officer (EVP of Subsidiary)	Grant or award	+716	—	—
Jul 1, 2026	Smith Patrick E Officer (Chairman & President of Sub)	Grant or award	+280	—	—
Jul 1, 2026	Melda Aaron P Officer (Chairman & President of Sub)	Grant or award	+2,520	—	—
Jun 1, 2026	Arora Ajay K Officer (EVP of Subsidiary)	Grant or award	+6,797	—	—
Jun 1, 2026	Melda Aaron P Officer (Chairman and President)	Grant or award	+3,705	—	—
May 14, 2026	Shaw Theresa A Officer (SVP and CATO)	Open-market sale	−325	$109.08	$35,451
May 12, 2026	Shaw Theresa A Officer (SVP and CATO)	Open-market sale	−1,500	$109.35	$164,025
May 1, 2026	Michael L. Moehn Officer (Group President, Utilities)	Open-market sale	−6,500	$113.63	$738,595
Mar 5, 2026	Catherine S. Brune Director	Gift	−450	—	—

Peers

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Questions about Ameren Corporation

Who is the CEO of Ameren Corporation?

Martin J. Lyons is Ameren Corporation's President & CEO.

How many directors are on Ameren Corporation's board?

Ameren Corporation's board has 18 directors: Catherine S. Brune, Craig S. Ivey, Cynthia J. Brinkley, Ellen M. Fitzsimmons, J. Edward Coleman, James C. Johnson, Jamie L. Engstrom, Kimberly J. Harris, Leo S. Mackay Jr., Martin J. Lyons and 8 others.

Are Ameren Corporation insiders buying or selling shares?

Over the last 12 months, Ameren Corporation insiders made no open-market purchases and sold $8.7 million of shares in 22 sales on the open market, as reported to the SEC on Forms 4 and 5.

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