Holly Keller Koeppel

Holly Keller Koeppel served as managing partner and head of Gateway Infrastructure Investments LP from March 2015 to January 2017. From 2010 to February 2015, she was partner and global co-head of Citi Infrastructure Investors, a division of Citigroup, Inc. Ms. Koeppel served as executive vice president and chief financial officer of American Electric Power Corporation (“AEP”) from 2006 to 2009 and several additional executive positions at AEP from 2000 to 2006. Ms. Koeppel joined the Company’s Board of Directors in February 2019. Public company directorships in the last five years: AES Corporation (from April 2015 to the present), British American Tobacco p.l.c. (from July 2017 to the present), Vesuvius plc (from April 2017 to the present), Integrys Energy Group, Inc. (from 2012 to February 2015) and Reynolds American Inc. (from 2008 to July 2017).