Mark S. Siegel

Mark S. Siegel, Chairman, Patterson-UTI Energy, Inc.; President, Remy Investors and Consultants, Inc.

Mark S. Siegel has served as Chairman of the Board and as a director of Patterson-UTI since May 2001. Mr. Siegel previously served as Chairman of the Board and as a director of UTI Energy from 1995 to 2001, when Patterson Energy and UTI Energy merged to form Patterson-UTI. Mr. Siegel has been President of REMY Investors and Consultants Inc. since 1993. Mr. Siegel is the past chairman and a current member of the Board of Directors of the Cedars-Sinai Medical Center, and previously served on the Board of Trustees of the J. Paul Getty Trust from 2005 to 2017 (including as Chair from 2010 to 2015). From 1992 to 1993, Mr. Siegel was President of the Music Division at Blockbuster Entertainment Corp. From 1988 through 1992. Mr. Siegel was an Executive Vice President of Shamrock Holdings Inc., a private investment company, and Managing Director of Shamrock Capital Advisors Inc. Mr. Siegel received a Bachelor of Arts degree from Colgate University (Magna Cum Laude and Phi Beta Kappa) and a Juris Doctor from University of California, Berkeley (Boalt Hall) School of Law (Order of the Coif).