Chairman, President and Chief Executive Officer of the Company Director since: 2022 Age: 59 OUTSIDE DIRECTORSHIPS: None EXECUTIVE EXPERIENCE: Mr. Lyons joined the Company in 2001 as Controller of Ameren and certain of its subsidiaries. Mr. Lyons was elected Vice President of the Company and certain of its subsidiaries in 2003. In 2007, he was elected Vice President and Principal Accounting Officer, and in 2008, he was elected Senior Vice President and Principal Accounting Officer of Ameren and its subsidiaries. In 2009, Mr. Lyons was elected Senior Vice President and Chief Financial Officer, while remaining as the Principal Accounting Officer, of the Company and its subsidiaries. In 2013, Mr. Lyons was elected Executive Vice President and Chief Financial Officer of the Company and its subsidiaries and relinquished his duties as Chief Accounting Officer. In 2016, Mr. Lyons was also elected Chairman and President of Ameren Services. In December 2019, Mr. Lyons was elected Chairman and President of Ameren Missouri. In January 2022, Mr. Lyons was elected President and Chief Executive Officer of the Company, and in November 2023, he was elected Chairman, President and Chief Executive Officer of the Company. SKILLS AND QUALIFICATIONS: Based primarily upon Mr. Lyons executive management experience, strong strategic planning, accounting, regulatory, financial, risk management, government relations, operations, human capital management and compensation, environmental and sustainability and administrative skills and experience, and tenure with the Company (and its current and former affiliates), the Board concluded that Mr. Lyons should serve as a director of Ameren.