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Executive Leadership

Warner Baxter - Chairman, President and Chief Executive Officer, Ameren Corporation

Warner L. Baxter

Executive Chairman, Ameren Corporation

Warner Baxter is executive chairman 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 )

Marty Lyons - Executive Vice President and Chief Financial Officer, Ameren Corporation | Chairman and President, Ameren Services

Martin J. Lyons Jr.

President and Chief Executive Officer, Ameren Corporation

Marty Lyons was named president and chief executive officer of Ameren Corporation and a member of the board of directors effective January 1, 2022. Lyons was previously chairman and president of Ameren Missouri, a position he held for two years after previously serving 18 years in a variety of positions within Ameren. ( more )

Mark Birk - Senior Vice President, Customer and Power Operations, Ameren Missouri

Mark C. Birk

Chairman and President, Ameren Missouri

Mark Birk is chairman and president of Ameren Missouri, an electric and natural gas delivery utility subsidiary of Ameren Corporation and Missouri's largest utility. Birk has held many leadership positions in his more than 35-years at Ameren, including progressively more responsible roles overseeing customer and power operations, energy delivery, strategic planning, energy trading, enterprise risk management, safety and nuclear corporate oversight. ( more )

Lenny Singh

Leonard "Lenny" Singh

Chairman and President, Ameren Illinois

Leonard "Lenny" Singh is chairman and president of Ameren Illinois, where he is responsible for energy delivery to more than 1.2 million electric and more than 800,000 natural gas customers encompassing 1,200 communities across 43,700 square miles. ( more )

Michael Moehn

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 Schukar - Chairman and President, Ameren Transmission Company

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. ( more )

Bhavani Amirthalingam

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. ( more )

Fadi Diya - Senior Vice President and Chief Nuclear Officer, Ameren Missouri

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. ( more )

Mark Lindgren - Senior Vice President, Corporate Communications and Chief Human Resources Officer, Ameren Services

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

Chonda Jordan Nwamu

Senior Vice President, General Counsel & Secretary, Ameren Corporation

Chonda Nwamu is Senior Vice President, General Counsel & 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 )

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