John Yearwood currently serves on our board of directors. Mr. Yearwood also currently serves on the board of directors of Nabors, TechnipFMC plc, Sheridan Production Partners, Barra Energia, Foro Energy LLC, Bazean LLC, and Coil Tubing Partners LLC. He previously served on the boards of Sabine Oil & Gas, LLC until August 2016, Premium Oilfield Services, LLC until April 2017, and Dixie Electric LLC until November 2018. Until August 2010, he served as the Chief Executive Officer, President and Chief Operating Officer of Smith International, Inc. (“Smith”). He was first elected to Smith’s board of directors in 2006 and remained on the board until he successfully negotiated and completed the sale of Smith to Schlumberger Limited in August 2010. Mr. Yearwood has extensive experience in the energy industry, including throughout Latin America, Europe, North Africa and North America. Before joining Smith, Mr. Yearwood spent 27 years with Schlumberger Limited in numerous operations, management and staff positions throughout Latin America, Europe, North Africa and North America, including as President and in financial director positions. He also previously served as Financial Director of WesternGeco, a 70:30 joint venture between Schlumberger and Baker Hughes from 2000 to 2004. Mr. Yearwood received a B.S. Honors Degree in Geology and the Environment from Oxford Brookes University in England.