Senior Vice President, Ethics and Enterprise Assurance and Chief Sustainability Officer of Lockheed Martin Corporation Director since: 2020 Age: 64 STANDING BOARD COMMITTEES: Audit and Risk Committee Nuclear, Operations and Environmental Sustainability Committee OUTSIDE DIRECTORSHIPS: Cognizant Technology Solutions Corporation, October 2012 Present EXECUTIVE EXPERIENCE: Mr. Mackay has served as Senior Vice President, Ethics and Enterprise Assurance of Lockheed Martin Corporation, a global security and aerospace company, since August 2018, and also serves as the company s chief sustainability officer. He previously held multiple senior leadership positions at Lockheed Martin, including Senior Vice President, Internal Audit, Ethics and Sustainability from June 2016 to July 2018, and Vice President, Ethics and Sustainability from July 2011 to July 2016. Prior to joining Lockheed Martin, Mr. Mackay served as chief operations officer of ACS State Healthcare, LLC. He also held leadership roles at the United States Department of Veterans Affairs and Bell Helicopter Textron, Inc. SKILLS AND QUALIFICATIONS: Based primarily upon Mr. Mackay s extensive executive and leadership experience as a senior vice president and chief sustainability officer of a global security and aerospace company, including strong operations, regulatory, accounting, financial, risk management, internal audit, compliance, environmental and sustainability, governmental, human capital management and compensation, and administrative skills and experience, the Board concluded that Mr. Mackay should serve as a director of Ameren.