Mr. Sides became President of Seitel Data, Ltd. in July 2009. He joined Seitel in July 1996 as Manager of Onshore Operations for Seitel Data, Ltd. In November 2002, he was promoted to Vice President—Onshore Operations for Seitel Data, Ltd. and in January 2005 he was promoted to Senior Vice President—Operations for Seitel Data, Ltd. He served as President of Seitel Canada Ltd. beginning in May 2007 until June 2009. Prior to joining Seitel, he was a geophysical analyst with Western Geophysical, Inc. from 1991 to 1996.