Born on 23 March 1952 in Wichita Falls, Texas, United States, Rex Wayne Tillerson is an American engineer and energy executive who served as the 69th U.S. secretary of state from February 1, 2017, to March 31, 2018, under President Donald Trump. Prior to joining the Trump administration, Tillerson was chairman and chief executive officer (CEO) of ExxonMobil, holding that position from 2006 until 2017.