Ms. Landahl was appointed as a director of SunCoke Energy, Inc., effective September 1, 2017. From June 2015 until her retirement in January 2021, Ms. Landahl served as Senior Vice President, Organizational Effectiveness and Integrated Performance Assessment of Exelon Generation Company, LLC, a major generator and marketer of electricity and a subsidiary of Exelon Corporation, one of the nation s largest power generators, with operations in 48 states. After joining Exelon in 1999, Ms. Landahl held a number of senior leadership positions, including Senior Vice President, Operations Integration & Business Development from August 2012 to January 2014, and Chief Operating Officer & Senior Vice President, Exelon Nuclear from June 2010 to August 2012. In this latter position, she oversaw 10 nuclear facilities and was responsible for 5,000 employees and annual budgets in excess of $1.5 billion. As Vice President, Industry Leadership at the Institute for Nuclear Power Operations from January 2014 to June 2015, Ms. Landahl led development of INPO 15-005, now the industry standard for leadership development and organizational effectiveness for the entire U.S. nuclear fleet and much of the world. Ms. Landahl is a knowledgeable and experienced industry leader with strong operational skills and a proven track record for successfully managing large, complex projects. She has a keen understanding of the energy industry, and possesses senior-level planning and managerial experience.