Mark McCollum

Mr. McCollum has over 36 years of leadership experience in the energy sector. Prior to joining Weatherford in March 2017, he served as Chief Financial Officer of Halliburton Company, a position he started in 2008 and resumed in July of 2016 following an interim role as Chief Integration Officer during the pendency of Halliburton’s proposed acquisition of Baker Hughes Incorporated.  
 
Prior to joining Halliburton, Mr. McCollum held a number of senior positions at Tenneco, Inc., including Chief Financial Officer, and served as an Audit and Advisory Partner in Arthur Andersen’s Energy Division, where he began his career. He is also a registered CPA in the State of Texas.   
 
Mr. McCollum is a member of the Board of Directors and the Audit and Compensation Committees at Archrock, Inc., previously known as Exterran Holdings. He is also a Regent at Baylor University and on the Baylor College of Medicine Board of Trustees.