Retired Executive Vice President and Chief Financial Officer of WestRock Company Director since: 2018 Age: 63 STANDING BOARD COMMITTEES: Audit and Risk Committee Cybersecurity and Digital Technology Committee Finance Committee (Chair) OUTSIDE DIRECTORSHIPS: Avery Dennison Corp., 2024 Present EXECUTIVE EXPERIENCE: Mr. Dickson served as Executive Vice President and Chief Financial Officer of WestRock Company from July 2015 to November 2021. Mr. Dickson previously served as Executive Vice President and Chief Financial Officer of RockTenn Company, the predecessor of WestRock Company, from September 2013 to July 2015, and in various positions at Cisco Systems from February 2006 to September 2013, most recently as Senior Vice President of Finance. SKILLS AND QUALIFICATIONS: Based primarily upon Mr. Dickson s extensive executive management and leadership experience as the chief financial officer of an industrial manufacturing company and senior officer of a technology company; extensive financial experience, including accounting, capital markets, capital structure, capital allocation, mergers and acquisitions and investor relations; significant risk management, cybersecurity, information technology, compensation, environmental and sustainability and administrative skills and experience; and contributions as a current Board and committee member, the Board concluded that Mr. Dickson should serve as a director of Ameren.