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Ameren's Overview

Total employees6921
HeadquartersSt. Louis
Founded1902

Ameren Corporation is a St. Louis-based energy company that powers the quality of life for 2.4 million electric customers and more than 900,000 natural gas customers in a 64,000-square-mile area across Missouri and Illinois. Ameren's primary business segments include Ameren Missouri and Ameren Illinois. They are committed to providing safe, reliable, and affordable energy while transitioning to cleaner energy sources.

Where is Ameren's Headquarters?

Ameren officeAmeren officeAmeren officeAmeren office
*Images sourced via web search. Rights belong to original owners

HQ Function

The headquarters houses key corporate functions including executive leadership, strategic planning, financial operations, legal, human resources, and regulatory affairs for the entire Ameren group.

Notable Features:

A modern office complex designed to support a large workforce, likely incorporating energy-efficient technologies reflecting the company's industry. It serves as a visible landmark representing a major utility provider in the region.

Work Culture:

The work culture at Ameren HQ is typically professional, emphasizing safety, operational excellence, customer service, community involvement, and a growing focus on sustainability and innovation in the energy sector.

HQ Significance:

The St. Louis headquarters is significant as the command center for a major regional energy provider, critical to the infrastructure and economic vitality of Missouri and Illinois. Decisions made here impact millions of customers and steer the company's strategic direction in a rapidly evolving energy landscape.

Values Reflected in HQ: The headquarters likely reflects Ameren's values of reliability, safety, community focus, and a forward-looking approach to energy solutions and corporate responsibility.

Location:

Ameren's operations are primarily concentrated within the United States, specifically in its Missouri and Illinois service territories. The company does not have a significant international operational footprint for energy generation or distribution. Its global interactions would mainly involve sourcing equipment, technology, and potentially engaging with international energy markets or research collaborations.

Street Address:

1901 Chouteau Avenue, P.O. Box 66149

City:

St. Louis

State/Province:

Missouri

Country:

USA

Ameren's Global Presence

Collinsville, Illinois, USA

Address: 300 Liberty St, Collinsville, IL 62234

Serves as the primary operational and administrative hub for Ameren's activities in Illinois, managing local regulatory compliance, community engagement, and infrastructure projects specific to the state.

Peoria, Illinois, USA

Address: 310 SW Washington St, Peoria, IL 61602

Ensures reliable energy delivery and responsiveness to customer needs within the central Illinois region, playing a key role in local infrastructure management.

Cape Girardeau, Missouri, USA

Address: 520 S. Kingshighway, Cape Girardeau, MO 63703

Manages and maintains the electrical grid and addresses customer service requirements for the southeastern part of Ameren Missouri's service area.

Buying Intent Signals for Ameren

Highperformr Signals uncover buying intent and give you clear insights to target the right accounts at the right time — helping your sales, marketing, and GTM teams close more deals, faster.

Notable news
Hiring actively
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
Corporate Finance
*Example signal, not calculated in real time

Executive Team of Ameren

As of April 2025, Ameren' leadership includes:

Martin J. Lyons, Jr. - Chairman, President and Chief Executive Officer, Ameren Corporation
Michael L. Moehn - Executive Vice President and Chief Financial Officer, Ameren Corporation
Mark C. Birk - Executive Vice President and Chief Operating Officer, Ameren Corporation; Chairman and President, Ameren Missouri
Leonard 'Lenny' Singh - Chairman and President, Ameren Illinois
Warner L. Baxter - Executive Chairman, Ameren Corporation
Chonda J. Nwamu - Executive Vice President, General Counsel and Secretary, Ameren Corporation
Theresa A. Shaw - Senior Vice President, Finance and Chief Accounting Officer, Ameren Corporation

Investors of Ameren

Ameren has been backed by several prominent investors over the years, including:

The Vanguard Group, Inc.
BlackRock, Inc.
State Street Corporation
Capital World Investors
Wellington Management Company, LLP

Executive New Hires/Exits in the Last 12 Months

Hire1
Exits0

Ameren has seen some key executive transitions and appointments recently, notably with Martin J. Lyons, Jr. assuming the CEO role and Warner Baxter moving to Executive Chairman. Chonda J. Nwamu was also appointed as EVP, General Counsel and Secretary.

New Appointments:

Martin J. Lyons, Jr., Martin J. Lyons, Jr. transitioned to President and CEO of Ameren Corporation, succeeding Warner Baxter.
Chonda J. Nwamu, Chonda J. Nwamu appointed as Executive Vice President, General Counsel and Secretary for Ameren Corporation.

Technology (Tech Stack) used by Ameren

Discover the tools Ameren uses. Highperformr reveals the technologies powering your target accounts — helping your sales, marketing, and GTM teams prioritize smarter and close faster.

Ameren Email Formats and Examples

Ameren commonly uses the email format of first initial followed by last name. For example, John Doe would likely be jdoe@ameren.com. Other less common formats might exist but this is the most frequently observed.

flast@ameren.com

Format

jdoe@ameren.com

Example

85%

Success rate

News and media

PR NewswireMay 7, 2024

Ameren Corporation Declares Quarterly Dividend

Ameren Corporation announced that its Board of Directors declared a quarterly dividend on its common stock of 67 cents per share, payable June 28, 2024, to shareholders of record at the close of business on June 12, 2024....more

Ameren NewsroomFebruary 23, 2024

Ameren Reports 2023 Results and Initiates 2024 Guidance

Ameren Corporation reported 2023 net income attributable to common shareholders of $1.09 billion, or $4.24 per diluted share, compared to 2022 net income of $1.10 billion, or $4.25 per diluted share. The company also initiated 2024 earnings guidance....more

Ameren NewsroomJanuary 2, 2024

Martin J. Lyons, Jr. Becomes Ameren President and Chief Executive Officer; Warner L. Baxter Assumes Role of Executive Chairman

Effective January 1, 2024, Martin J. Lyons, Jr. assumed the role of president and chief executive officer of Ameren Corporation. Warner L. Baxter, previously chairman, president and CEO, transitioned to the role of executive chairman of Ameren's Board of Directors....more

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