Mark S. Siegel

MARK S. SIEGEL is Chairman of the Board of Patterson-UTI Energy, Inc.,
President and Founder of REMY Investors & Consultants, Inc., a
California-registered investment advisor, established in 1993. Mr.
Siegel was Chairman of the Board of Directors of UTI Energy Corp. from
March 1995 until May, 2001 when UTI Energy Corp. merged with Patterson
Energy, Inc. to form Patterson-UTI Energy, Inc. He was elected as
Chairman of the Board of Variflex, Inc. in November, 1997. From 1992 to
1993, Mr. Siegel was President, Music Division of Blockbuster
Entertainment Corp. From 1988 through 1992, Mr. Siegel was an Executive
Vice President of Shamrock Holdings, Inc. and Managing Director of
Shamrock Capital Advisors, Inc. Mr. Siegel received a Bachelor of Arts
degree in Philosophy from Colgate University and a Juris Doctorate from
the University of California at Berkeley (Boalt Hall) School of Law.