CLB 2019 Proxy Statement

12 Continuing Class III Supervisory Directors (Term to Expire 2021) Lawrence Bruno President and Chief Operating Officer • Supervisory Director since 2018 Age: 59 Mr. Bruno served as President of the Petroleum Services division, within our Reservoir Description segment fromJuly 2015 through January 31, 2018. On February 1, 2018, he became the President of the Company, assuming that role fromMr. David Demshur, who will remain as the Company's Chairman and Chief Executive Officer. On January 1, 2019, he also assumed the position of Chief OperatingOfficer. Prior to being named as President of the Petroleum Services division in July 2015, Mr. Bruno was the General Manager of U.S. Rocks from 1999 to July 2015. Prior to joining the Company, hewas employed at an oil and gas service company for 14 years before it was acquired by the Company in 1999. Mr. Bruno received a Master’s of Science degree in Geology in 1987 from the University of Houston. He has attended numerous investor conferences over the past few years enabling him to develop important relationships within the investment community. Margaret Ann van Kempen Supervisory Director since 2012 Member of Compensation Committee and Proposed Chairman of the Nominating, Governance and Corporate Responsibility Committee Age: 66 Ms. van Kempen has been the owner and managing partner of Van Kempen Public Relations & Public Affairs and Van KempenAssociates since 1997. She has extensive experience in strategic corporate communications and investor relations, with a focus on reputation and issue management. She has provided litigation PR and communications advice on a wide variety of issues in high profile cases in and outside the Netherlands. Her clients cover a range of sectors including banking, M&A, energy, telecommunications, information technology, professional services and fashion. From 1988 to 1995, she was Director European Affairs of Financial Times Television. Before that, she worked in government and semi- government organizations including the Foreign Trade Agency of the Ministry of Economic Affairs. Ms. van Kempen's background in corporate communications and knowledge of strategic investor relations, including her knowledge of such matters in Europe, allow her to provide unique insight to the Company particularly in light of our dual listing on the Euronext Amsterdam Stock Exchange.