Scott N. Greenberg was chief executive officer from April 2005 until June 2020 and was the president of the company from 2001 until February 2006. He was chief financial officer from 1989 until December 2005, executive vice president from 1998 to 2001, vice president from 1985 to 1998, and has held various other positions since joining the company in 1981.
From 1999 to 2008, he was a director of GSE Systems, Inc. (GSE), a global provider of real-time simulation and training solutions which is a former majority-owned subsidiary of the company that was spun off in 2005. Mr. Greenberg was also a director of Wright Investors’ Service Holdings Inc., formerly National Patent Development Corporation (NPDC), from 2004 to January 2015. Mr. Greenberg was also chief financial officer of NPDC from 2004 until August 2007. Mr. Greenberg has served on our board of directors since 1987.