Paul E. Rowsey, III , age 62

Mr. Rowsey was appointed Non-Executive Chairman of our Board in 2015, and has served as a director since 2000. In September 2017, he retired as the President and Chief Executive Officer of Compatriot Capital, Inc., a real estate investment and operating company, where he was employed since 2011. Prior to joining Compatriot, he was a founder and the managing partner of E2M Partners, LLC, a sponsor and manager of private real estate equity funds and an affiliate of Compatriot. He serves as a member of the Board of Directors of Powdr Corporation, one of the largest alpine skiing and outdoor sports companies in the United States, based in Park City, Utah, KDC Holdings, a national real estate investment and development firm based in Dallas, Texas, Village Green Holding, a multi-family housing management and development firm based in Farmington Hills, Michigan and JLB Partners, LLC, a multi-family housing development firm based in Dallas, Texas. Mr. Rowsey is a 1977 magna cum laude graduate of Duke University with a degree in management science and a 1980 cum laude graduate of Southern Methodist University School of Law. Mr. Rowsey also serves as the Chairman of our Nominating and Governance Committee.

Carl Trowell , age 48

Mr. Trowell joined Ensco in June 2014 as President and Chief Executive Officer. He is also a member of the Board. Prior to joining Ensco, Mr. Trowell was President of Schlumberger Integrated Project Management (IPM) and Schlumberger Production Management (SPM) businesses that provide complex oil and gas project solutions ranging from field management, well construction, production and intervention services to well abandonment and rig management. He was promoted to this role after serving as President - Schlumberger WesternGeco Ltd. where he managed more than 6,500 employees with operations in 55 countries. Mr. Trowell began his professional career as a petroleum engineer with Shell before joining Schlumberger where he held a variety of international management positions including Geomarket Manager for North Sea operations and Global Vice President of Marketing and Sales. He has a strong background in the development and deployment of new technologies and has been a member of several industry advisory boards in this capacity. Mr. Trowell is on the advisory board of Energy Ventures, a venture capital company investing in oil and gas technology. In August 2016, Mr. Trowell became a non-executive director on the board of Ophir Energy plc. Mr. Trowell has a PhD in Earth Sciences from the University of Cambridge, a Master of Business Administration from The Open University and a Bachelor Science degree in Geology from Imperial College London.

J. Roderick Clark , age 66

Mr. Clark has been one of our directors since 2008. He served as President and Chief Operating Officer of Baker Hughes Incorporated from 2004 through January 2008. Before becoming President and Chief Operating Officer, he served as Vice President, Marketing and Technology. Mr. Clark joined Baker Hughes Incorporated during 2001 as President of Baker Petrolite. He formerly served as President and Chief Executive Officer of Consolidated Equipment Companies Inc. He also formerly served as President of Sperry-Sun, a Halliburton company. Mr. Clark has held financial, operational and leadership positions with FMC Corporation, Schlumberger and Grace Energy Corporation. Mr. Clark serves as a director and a business consultant/advisor for Sammons Enterprises, Inc. and as a director of Rockwater Energy Solutions, an oilfield services company. He also serves on the Board of Managers of Veritas Energy, LLC, a non-public independent oil & gas operator with operations in the Permian Basin. He also serves as a trustee of the Dallas Theological Seminary. He holds Bachelor of Arts and Master of Business Administration degrees from the University of Texas. Mr. Clark currently serves as Chairman of our Compensation Committee.

Roxanne J. Decyk , age 64

Ms. Decyk has been one of our directors since 2013. She retired as Executive Vice President of Global Government Relations for Royal Dutch Shell plc, a global oil and gas company, in December 2010, after serving in that position since 2009. From 2008 until 2009, Ms. Decyk served as Corporate Affairs and Sustainable Development Director of Royal Dutch Shell plc, from 2005 to 2009, she served on the Executive Committee and from 2005 to 2008, she also served as Corporate Affairs Director. Prior thereto, Ms. Decyk was Senior Vice President - Corporate Affairs and Human Resources of Shell Oil Company and Vice President of Corporate Strategy of Shell International Limited. She serves as a director of Orbital ATK (formerly Alliant Techsystems Inc.) since 2010 and Digital Globe since 2014. She was previously a director of Petrofac Limited from 2011 until May 2015, and Snap-on Incorporated from 1993 until June 2014. She earned a Bachelor of Arts degree from the University of Illinois at Urbana-Champaign in English literature and a Juris Doctorate from Marquette University Law School. Ms. Decyk currently serves on our Compensation Committee.

Mary E. Francis CBE , age 68

Mrs. Francis has been one of our directors since 2013. She is a former senior civil servant in the British Treasury and the Prime Minister's office and was subsequently Director General of the Association of British Insurers. Since 2013, Mrs. Francis has been a non-executive director of the Swiss Re Group, having been appointed to the Board of Directors of Swiss Reinsurance Company Ltd. in October 2012. Mrs. Francis was appointed to the Boards of Directors of Barclays PLC and Barclays Bank PLC in October 2016. She served on the Board of Directors of Centrica plc, an integrated energy company, between 2004 and 2014, and was Senior Independent Director from 2006. From 2005 to 2012, she served as a non-executive director of Aviva plc, and from 2009 to 2012, she served as a non-executive director of Cable & Wireless Communications Plc. She is also a former non-executive director of the Bank of England, Alliance & Leicester plc and St. Modwen Properties plc and is a Senior Adviser to the International Relations Institute, Chatham House. She earned a Master of Arts in History from Newnham College, University of Cambridge. Mrs. Francis currently serves on our Audit Committee and our Nominating and Governance Committee.

C. Christopher Gaut , age 60

Mr. Gaut has been one of our directors since 2008. Mr. Gaut is the Executive Chairman of Forum Energy Technologies, Inc. He served as Chairman and Chief Executive Officer of Forum Energy Technologies, Inc., a publicly traded global provider of manufactured equipment and products to the energy industry, from August 2010 until May 2017. Mr. Gaut previously served as a Managing Director of SCF Partners, a Houston, Texas based private equity firm that engages in investment and acquisition of energy service companies. Prior to joining SCF Partners, he served as President of Halliburton Company's Drilling and Evaluation Division from January 2008 until April 2009. Mr. Gaut also previously served as Executive Vice President and Chief Financial Officer of Halliburton Company, one of the world's largest providers of products and services to the energy industry. He was appointed to the board of directors for Key Energy Services in December 2016 and EOG Resources, Inc. in October 2017. Mr. Gaut holds a Bachelor of Arts degree in Engineering Sciences from Dartmouth College and a Master of Business Administration from the Wharton School of Business at the University of Pennsylvania. Mr. Gaut currently serves on our Compensation Committee.

Jack E. Golden , age 68

Dr. Golden became a director in 2017 in connection with our acquisition of Atwood Oceanics Inc. where he served as a director since 2009. Dr. Golden is managing partner of Edgewater Energy LLC, a Texas based oil and gas company. Previously, Dr. Golden was employed by BP p.l.c. from 1982 through his retirement in 2005, where he served in various executive capacities including Group Vice President – Exploration and Production. As Group Vice President – Exploration and Production, he directed significant portions of BP’s global exploration and production operations. Dr. Golden also serves as a director of Cobalt International Energy, Inc., a publicly-traded independent exploration and production company. Dr. Golden serves on the Boards of two private companies: Sand Hill Petroleum and Edgemarc Energy.

Gerald W. Haddock , age 69

Mr. Haddock has been one of our directors since 1986. In 2000, he founded Haddock Enterprises, LLC, an entrepreneurial development company concentrating in private investments and transactions, including oil and gas and real estate, located in Fort Worth, Texas, and has served as its President since that time. Mr. Haddock formerly served as President and Chief Operating Officer of Crescent Real Estate Equities Company from 1994 to 1996 and as President and Chief Executive Officer of Crescent Real Estate Equities Company from 1996 to 1999. During 2005, Mr. Haddock joined the Board of Directors of Meritage Homes Corporation and has served on its Executive Compensation Committee since that time. In addition, he was named Chairman of its Nominating and Corporate Governance Committee during 2006. Mr. Haddock is a former board member of Cano Petroleum Inc., having served from late 2004 through October 2008. Mr. Haddock holds Bachelor of Business Administration and Juris Doctorate degrees from Baylor University. He also received a Master of Laws in Taxation degree from New York University and a Master of Business Administration degree from Dallas Baptist University. Mr. Haddock currently serves on our Audit Committee and our Nominating and Governance Committee.

Francis S. Kalman , age 69

Mr. Kalman became a director in 2011 in connection with our acquisition of Pride International, Inc., where he served as a director since 2005. Mr. Kalman served as Executive Vice President of McDermott International, Inc. from 2002 until his retirement in 2008 and as Chief Financial Officer from 2002 until 2007. From 2000 to 2002, he was Senior Vice President and Chief Financial Officer of Vector ESP, Inc., from 1999 to 2000, he was a principal of Pinnacle Equity Partners, LLC, from 1998 to 1999, he was Executive Vice President and Chief Financial Officer of Chemical Logistics Corporation and from 1996 to 1997, he was Senior Vice President and Chief Financial Officer of Keystone International, Inc. Mr. Kalman currently serves as a senior advisor to a private investment subsidiary of Tudor, Pickering, Holt & Co., LLC, which specialises in direct investments in upstream, midstream and oilfield service companies. He also serves on the Board of Directors and the Audit Committees of Kraton Corporation (formerly known as Kraton Performance Polymers, Inc.) and Weatherford International plc and the Nominating and Governance Committee of Weatherford. Mr. Kalman was previously a principal of Ancora Partners, LLC, a private equity group, which was liquidated in 2014. Mr. Kalman holds a Bachelor of Science degree in Accounting from Long Island University. Mr. Kalman currently serves on our Audit Committee.

Keith O. Rattie , age 63

Mr. Rattie has been one of our directors since 2008. Mr. Rattie previously served as President of Questar Corporation, a natural gas focused energy company, from February 2001 until July 2010, Chief Executive Officer from May 2002 and Chairman from May 2003 until July 2010. He previously served as Non-Executive Chairman of Questar from July 2010 to July 2012. Mr. Rattie continued to serve as a director of Questar until May 2014. He previously served as Non-Executive Chairman of QEP Resources from July 2010 to July 2012. He previously served as Vice President and Senior Vice President of Coastal Corporation, a diversified energy company. Prior to joining Coastal, he spent 19 years with Chevron Corporation in various engineering and management positions, including as General Manager of Chevron's international gas unit. Mr. Rattie serves as a director of EP Energy, an independent oil and gas exploration and production company with operations in the U.S. He serves on the Audit Committee of EP Energy. He also serves as a director of Rockwater Energy Solutions, an oilfield services company. Mr. Rattie is a former chairman of the Board of the Interstate Natural Gas Association of America. He holds a Bachelor of Science degree in Electrical Engineering from the University of Washington and a Master of Business Administration degree from St. Mary's College. Mr. Rattie currently serves as Chairman of our Audit Committee.

Phil D. Wedemeyer , age 68

Mr. Wedemeyer became a director in 2017 in connection with our acquisition of Atwood Oceanics Inc. where he served as a director since 2011. In July 2011, Mr. Wedemeyer retired as a partner from Grant Thornton LLP, an international accounting firm, where he had served since August 2007. From May 2003 to July 2007, Mr. Wedemeyer served in various capacities with the Public Company Accounting Oversight Board (“PCAOB”), including serving as the Director, Office of Research and Analysis, from August 2005 to July 2007 and as a Deputy Director, Division of Registration and Inspection, from March 2004 to August 2005. Prior to his service with the PCAOB, Mr. Wedemeyer spent more than 31 years at Arthur Andersen SC, an international accounting firm, including 22 years as a partner. Mr. Wedemeyer currently serves as a director of Trinity Steel Fabricators, a privately-held fabricator of steel structures and vessels; and as a director, member of the compensation committee, chairman of the audit committee and designated financial expert of Willbros Group, Inc., an energy infrastructure construction and maintenance company. He also previously served as a member of the Deloitte Audit Quality Advisory Counsel and the Auditing Standards Board of the AICPA and is a licensed Certified Public Accountant. Mr. Wedemeyer previously served as a director of Powell Industries, Inc., a provider of packaged solutions for the control, monitoring, and distribution of electrical power and other critical processes; Horizon Offshore, Inc., a former provider of marine construction services that was acquired by Cal Dive International, Inc.; and HMS Income Fund, Inc., a business development company.