Roman Martinez has been a private investor since 2003. In 2003, he retired as Managing Director of Lehman Brothers, an investment banking firm, following a 31- year career with the firm. He served as a director of Alliant Techsystems Inc., a publicly traded aerospace, defense and commercial products company, from 2004 until February 2015, when Alliant Techsystems, Inc. merged with Orbital Sciences, Inc. to create Orbital ATK, Inc. and simultaneously spun-off its commercial products company. Mr. Martinez has served as a director of Orbital ATK, Inc. since February 2015. Mr. Martinez has served on the Board of Trustees of New York Presbyterian Hospital since 1996.