Executive Leadership
Warner L. Baxter
Chairman, President and Chief Executive Officer, Ameren Corporation
Warner Baxter is chairman, president and chief executive officer of St. Louis-based Ameren Corporation, parent company of rate-regulated energy companies that serve more than 2.4 million electric and nearly 1 million natural gas customers in Illinois and Missouri. The company, which also develops regional electric transmission projects, had 2020 revenues of approximately $6 billion. ( more )
Richard J. Mark
Chairman and President, Ameren Illinois
Richard Mark is chairman and president of Ameren Illinois Companies where he is responsible for energy delivery to more than 1.2 million electric and 816,000 natural gas customers.
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Martin J. Lyons Jr.
Chairman and President, Ameren Missouri
Marty Lyons was named chairman and president of Ameren Missouri on Dec. 2, 2019 after serving 18 years in a variety of positions within Ameren. He is responsible for Missouri's largest investor-owned energy provider serving more than 1.2 million electric and natural gas customers. ( more )
Michael L. Moehn
Executive VP, CFO, Ameren Corp., President, Ameren Services
Michael L. Moehn became executive vice president, CFO, Ameren Corp., and president of Ameren Services on Dec. 2, 2019. In this role, Moehn is responsible for all aspects of Ameren's financial affairs including Investor Relations, Financial Reporting, Accounting, Tax, Treasury and Internal Audit. He also oversees Strategy, Mergers and Acquisitions, Enterprise Risk Management, Digital Information Technology, Supply Chain and Corporate Nuclear Oversight, amongst other functions. As CFO, Moehn oversees capital allocation and capital market activities. ( more )
Shawn E. Schukar
Chairman and President, Ameren Transmission Company
Shawn Schukar is chairman and president of Ameren Transmission Company of Illinois (ATXI) - a subsidiary of Ameren Corporation, dedicated to electric transmission infrastructure investment.
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Bhavani Amirthalingam
Senior Vice President, Chief Digital Information Officer, Ameren Services
Bhavani Amirthalingam joined Ameren in 2018 as senior vice president and chief digital information officer. She is leading Ameren's digital transformation to deliver a differentiated customer and co-worker experience, leveraging emerging technologies to enable the grid of the future while driving operational excellence at scale. She is focused on accelerating technology solutions to enable greater safety, security, reliability and productivity at scale.
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Mark C. Birk
Senior Vice President, Customer and Power Operations, Ameren Missouri
Mark Birk is senior vice president, Customer and Power Operations. He is responsible for the engineering, construction, operations and maintenance of Ameren Missouri's electric and gas distribution systems as well as non-nuclear generation and energy management.
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Fadi M. Diya
Senior Vice President and Chief Nuclear Officer, Ameren Missouri
Fadi Diya is senior vice president and chief nuclear officer (CNO) for Ameren Missouri. Diya is responsible for all of Ameren Missouri's nuclear operations.
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Mary Heger
Senior Vice President Customer Experience, Ameren Illinois
Mary Heger is senior vice president Customer Experience of Ameren Illinois Company, a subsidiary of Ameren Corporation. Based in Collinsville, Illinois, Ameren Illinois provides service to 1.2 million electric customers and 816,000 natural gas customers across 44,000 square-miles in the state of Illinois.
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Mark C. Lindgren
Senior Vice President, Corporate Communications and Chief Human Resources Officer, Ameren Services
Mark C. Lindgren is senior vice president of Corporate Communications and chief human resources officer for Ameren. In his current role, he is responsible for Ameren's Workforce Strategy, Human Resources, Corporate Communications and Corporate Philanthropy. ( more )
Chonda Nwamu
Senior Vice President, General Counsel & Secretary, Ameren Corporation
Chonda Nwamu is senior vice president, general counsel and secretary for Ameren Corporation. Nwamu is the primary legal advisor to Ameren's Board of Directors and senior management, and she leads the General Counsel function, which includes the company's legal, corporate governance, federal regulatory and legislative affairs, and enterprise ethics and compliance departments. She also serves on Ameren's Executive Leadership Team as a contributor to overall strategic direction of the Company. ( more )
