From 2018 until her retirement in 2020, Ms. Ludford served as Deputy Chief Security Officer for Exelon Corporation, a provider of utility services in the United States. Ms. Ludford previously served as Vice President, Corporate Operations of Exelon from 2016 to 2018, and as Chief Audit Executive of Exelon from 2010 until 2016. At PECO Energy (an Exelon company), Ms. Ludford served from 2009 to 2010 as Vice President of Smart Grid and Smart Meters, as Vice President of Customer Operations from 2007 to 2009, and as Vice President Finance from 2006 to 2007. She additionally served as Vice President of Customer Financial Operations at Commonwealth Edison and PECO Energy from 2005 to 2006. Prior to 2005, Ms. Ludford held a variety of roles of increasing responsibility and complexity in the energy industry. Ms. Ludford currently serves on the Boards of NW Natural and Otter Tail Corporation (Nasdaq: OTTR), where she also serves on its Audit and Corporate Governance Committees. She holds a Master of Business Administration from the Quinlan School of Business at Loyola University Chicago and a Bachelor of Business from Western Illinois University. Ms. Ludford s extensive senior management experience at Exelon Corporation positions her to provide valuable guidance and insight on a wide range of operational, strategic and regulatory matters impacting the energy and utility industries. In addition, her professional and board experience, including as a member of the Audit Committee of Otter Tail Corporation, enable her to provide important oversight of a variety of financial, accounting, auditing, risk management, change management, and cybersecurity matters. Ms. Ludford s cumulative experience has led the Board to determine that she is an audit committee financial expert as defined by the SEC rules. Ms. Ludford s extensive knowledge and experience in finance, accounting and energy and utility industry matters strengthen the Board s collective knowledge, capabilities and experience.