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The following section provides information on Ameren Corp’s senior management, executives, CEO and key decision makers and their roles in the organization. For more insight into Ameren Corp's management and employees, unlock the full data with our company analytics monitoring tool.

Executives

Warner L. Baxter

Chairman Executive Board Since: 2014 Age: 60

Mr. Warner L. Baxter has been the Chairman of the company since 2014. Before that, he served as President and Chief Executive Officer of the company. Prior to this, he served as the President and Chief Executive Officer of Union Electric Company. Previously, Mr. Baxter served as the Chairman, President and Chief Executive Officer of Ameren Services Company from 2007 to 2009; and Executive Vice President and Chief Financial Officer of the company from 2003 to 2009.

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Marty Lyons

President; Chief Executive Officer; Director Executive Board Since: 2022 Age: 55

Mr. Marty Lyons has been the President and Chief Executive Officer of the company since January 2022. Prior to this, he served as the Vice President and Controller. Previously, he served as the Chief Financial Officer of Ameren Services.

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Michael L. Moehn

Executive Vice President; President - Ameren Services; Chief Financial Officer; Chairman - Ameren Services Executive Board Since: 2019 Age: 52

Mr. Michael L. Moehn has been the Executive Vice President and Chief Financial Officer of Ameren Corp and the Chairman and president of Ameren Services since 2019. Prior to this, he served as the Chairman and President at Ameren Missouri, a subsidiary of the company, from 2014 to 2019. He served as the Senior Vice President of customer operations at Ameren Missouri, a subsidiary of Ameren.

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Richard J. Mark

President - Ameren Illinois; Chairman - Ameren Illinois Executive Board Since: 2012 Age: 66

Mr Richard J Mark is the chairman and president of Ameren Missouri since 2012. Prior to this role, he was the senior vice president for customer and power operations. He was the senior vice president for corporate safety, strategy and nuclear operations from 2012 to 2014, senior vice president of corporate strategy and enterprise risk management from 2005 to 2012, vice president of power operations from 2003 to 2005, vice president of energy trading from 2001 to 2003 and was the general manager of energy delivery technical systems in 2001. Mr Richard started his career in the company in 1986 as a supporting member of the Callaway energy centre and was promoted to the role of supervisor in transmission operations in 1996.

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Mark Birk

Chairman - Ameren Missouri; President - Ameren Missouri Executive Board Since: 2022 Age: 57

Mr. Mark Birk has been the Chairman and President of Ameren Missouri of the company since January 2022. Prior to this, he served as the General Manager of company's Meramec Energy Center of energy delivery technical services in 2001. Previously, he served as the Vice President of energy trading in 2003 then promoted to vice president of power operations in 2005; to senior vice president, corporate strategy and enterprise risk management in 2012; and to senior vice president, corporate safety, strategy and nuclear operations oversight in 2014.

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