Management Directors Documentation Committees Section 16 filings
Gary Kolstad
President, Chief Executive Officer

Gary Kolstad President, Chief Executive OfficerGary A. Kolstad was elected in June 2006, by the Company's Board of Directors to serve as President and Chief Executive Officer and a Director of the Company. Mr. Kolstad previously served in a variety of positions over 21 years with Schlumberger, Ltd. Mr. Kolstad became a Vice President of Schlumberger, Ltd. in 2001, where he last held the positions of Vice President, Oilfield Services U.S. Onshore and Vice President, Global Accounts.

Ernesto Bautista, III
Vice President, Chief Financial Officer

Ernesto Bautista III, Vice President, CFO of Carbo CeramicsErnesto Bautista III  joined the Company as a Vice President and Chief Financial Officer in January 2009. From July 2006 until joining the Company, Mr. Bautista served as Vice President and Chief Financial Officer of W-H Energy Services, Inc., a Houston, Texas based diversified oilfield services company (W-H Energy). From July 2000 to July 2006, he served as Vice President and Corporate Controller of W-H Energy. From September 1994 to May 2000, Mr. Bautista served in various positions at Arthur Andersen LLP, most recently as a manager in the assurance practice, specializing in emerging, high growth companies. Mr. Bautista is a certified public accountant in the State of Texas.

Don P. Conkle
Vice President, Marketing and Sales

Don P. Conkle, VP, Marketing and Sales - Carbo CeramicsDon P. Conkle joined the Company as Vice President, Marketing and Sales, in October 2012. Mr. Conkle previously worked more than 26 years in various positions for Schlumberger, most recently as the Production Group Marketing and Technology Director. Other leadership positions in Schlumberger included, Global Vice President of Pressure Pumping – Fracturing and Stimulation; Global Personnel Manager – Pressure Pumping; and Vice President of Oilfield Services (Central/Eastern/Southern USL and Qatar/Yemen).

Chad Cannan
Vice President, Research and Development

Chad Cannan - Vice President, Research and DevelopmentChad Cannan joined the Company in July 1999 and was named Vice President, Research and Development in May 2013. He previously held positions with the Company including: Technical Services/Development Engineer; Project Manager and Plant Manager in China; Director of Global Engineering; Director of International Operations; and Director of Research and Development. Prior to joining the Company, Mr. Cannan was an officer in the United States Air Force.

Roger Riffey
Vice President, Manufacturing

Roger Riffey - Vice President, ManufacturingRoger Riffey joined the Company in July 2006 as Director of Logistics and Customer Service. He was appointed Plant Manager of the Toomsboro, Georgia, facility in July 2010, and was named Vice President, Manufacturing in May 2013. Previously, Mr. Riffey held positions with Rio Tinto Energy in Special Projects, U.S. Borax as Global Logistics Manager and Kerr-McGee Coal Corporation as Manager of Marketing.

Ellen Smith
Vice President, Human Resources

Ellen Smith - Vice President, Human ResourcesEllen M. Smith joined the Company in November 2007 as Vice President of Human Resources. She previously led the human resources function for the start-up of two Shell Technology Ventures companies, @Balance B.V. and ThruBit, LLC. Ms. Smith began her career in oilfield services with Schlumberger where she held a variety of positions in human resources.




John R. Bakht
Vice President, General Counsel

Gary Kolstad President, Chief Executive OfficerJohn R. Bakht was appointed Vice President, General Counsel, Corporate Secretary and Chief Compliance Officer in June 2015. Mr. Bakht joined CARBO after 13 years with Baker Hughes Incorporated, where he last served as Vice President – Legal, U.S. Operations, Strategy and Corporate Development, and Reservoir Development Services. Mr. Bakht holds a B.A. in Economics from the University of North Carolina at Chapel Hill and a J.D. from The University of Texas.

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