John W. Pietrowicz had a 20-year career at CME Group where he served as Chief Financial Officer from 2014 until his retirement from that position in April 2023. Pietrowicz currently serves on the board of Marex, a global financial services company headquartered in London, and previously served as a director on the boards of the World Federation of Exchanges, Bolsa Mexicana de Valores, and S&P Dow Jones Indices. He also served as a member of the Financial Accounting Standards Advisory Committee. Before CME Group, Pietrowicz held financial leadership positions for Ameritech, after beginning his career as an auditor for Arthur Andersen. Pietrowicz holds a Bachelor of Business Administration in Accountancy from the University of Notre Dame and a Master of Business Administration in Finance from Loyola University Chicago. He is also a Certified Public Accountant.