William Parrett served as the chief executive officer of Deloitte Touche Tohmatsu, a multinational professional services network, from 2003 until 2007. He joined Deloitte in 1967 and served in a series of roles of increasing responsibility until his retirement in 2007. Parrett serves as a director of The Blackstone Group L.P. and the Eastman Kodak Company. He previously served as a director of Conduent Inc., Thermo Fisher Scientific, UBS Group AG, and IGATE Corporation. Parrett is a Certified Public Accountant with an active license.