Karenann Terrell has served as a member of the board of directors since October 2017. Since September 2017, Ms. Terrell has served as Chief Digital and Technology Officer for GlaxoSmithKline plc, a global pharmaceutical and healthcare company. Ms. Terrell previously served as the Chief Information Officer of Wal-Mart Stores, Inc., a global retail company, from February 2012 to March 2017. Ms. Terrell holds a B.S. degree in Electrical Engineering from Kettering University and an M.S. degree in Electrical Engineering from Purdue University.