President and Chief Executive Officer of American Tower Corporation Director since: 2025 Age: 55 STANDING BOARD COMMITTEES: Finance Committee Nuclear, Operations and Environmental Sustainability Committee OUTSIDE DIRECTORSHIPS: American Tower Corporation, February 2024 Present EXECUTIVE EXPERIENCE: Mr. Vondran has served as President and Chief Executive Officer of American Tower Corporation, a global real estate investment trust and independent owner, operator and developer of multitenant communications real estate, since February 2024. He previously held multiple senior leadership positions at American Tower Corporation, including Executive Vice President and Global Chief Operating Officer from November 2023 to February 2024, Executive Vice President and President, US Tower Division from August 2018 to October 2023, Senior Vice President, General Counsel, US Tower Division from August 2010 to August 2018, and Senior Vice President, U.S. Leasing Operations from August 2004 to August 2010. SKILLS AND QUALIFICATIONS: Based primarily upon Mr. Vondran s extensive executive and leadership experience as a president and chief executive officer of a global real estate investment trust and independent owner, operator and developer of multitenant communications real estate, including strong legal, operations, regulatory, financial, risk management, compliance, governmental, human capital management and compensation, and administrative skills and experience, the Board concluded that Mr. Vondran should serve as a director of Ameren.