Theresa E. Wagler has been a director of CF Industries since 2014 and serves on the audit and environmental sustainability and community committees; she is an audit committee financial expert and a certified public accountant.
She has been chief financial officer and executive vice president of Steel Dynamics, Inc. since 2007 and 2009 respectively, serving as its principal accounting officer with oversight of information technology and cybersecurity, human resources, business development and strategy, and decarbonization.