Primary Job Title Director Primary Organization 
National Oilwell Varco
Location Houston, Texas, United States Regions Greater Houston Area, Southern US Gender Male
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Mr. Mattson has been a Director of the Company since March 2005. Mr. Mattson served as a Director of Varco (and its predecessor, Tuboscope Inc.) since January 1994. Since August of 2007, Mr Mattson has been a founding investor and EVP & CFO of Select Energy Services, LLC, a private oil service company. From 2003 to 2007, Mr. Mattson was Senior
Vice President and Chief Financial Officer of VeriCenter, Inc., a private provider of managed hosting services that was sold to Sungard, Inc. From November 2002 until October 2003, Mr. Mattson worked as an independent consultant. Mr. Mattson was the Chief Financial Officer of Netrail, Inc., a private Internet backbone and broadband service provider, from September 1999 until November 2002. From July 1993 until May 1999, Mr. Mattson served as Senior Vice President and Chief Financial Officer of Baker Hughes Incorporated, a provider of products and services to the oil, gas and process industries.
