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TGS’ Senior Leadership Team

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    • Kristian Johansen, Chief Executive Officer and Interim Leader North and South America

      Kristian joined TGS in 2010 as Chief Financial Officer and became Chief Operating Officer in early 2015 before being appointed Chief Executive Officer in March 2016. Prior to joining TGS, Kristian was the Executive Vice President and CFO of EDB Business Partner in Oslo (now Evry). 




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    • Sven Børre Larsen, Chief Financial Officer

      Sven Børre Larsen, joined TGS in September 2015 as Chief Financial Officer. Prior to joining TGS, Sven was CFO of Prosafe, the world’s leading owner and operator of semi-submersible accommodation vessels for the offshore oil and gas industry. 





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    • John A Adamick, Senior VP Geological Products & Services

      John joined TGS in 1986 and has served the company in a variety of capacities. Most recently, he served as Vice President, Business Development before being appointed Senior Vice President Geological Products & Services in 2008. 





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    • Katja Akentieva, Senior Vice President Onshore

      Katja joined TGS in 2012 with the acquisition of Arcis and was appointed Managing Director Arcis and North American Arctic. Prior to joining Arcis in 2008, Katja spent 11 years with Schlumberger where she held various positions within geophysics, sales and business development based in the UK, Norway and Canada.  




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    • Fredrik Amundsen, Senior Vice President Europe and Asia Pacific

      Fredrik joined TGS in 2003 as Financial Controller and has since served TGS in a variety of capacities. These include Corporate Controller, Director of Finance, Director of Sales, and lately VP of Europe & Russia before being appointed Senior Vice President Europe and Asia Pacific in 2016. Fredrik received B.A (Hons) in Business Administration from Washington State University in 2001. 





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    • Zhiming Li, Senior VP Imaging Services 

      Zhiming joined TGS in 2007 as Senior VP of Data Processing, Research & Development.





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    • Knut Agersborg, VP Global Services 

      Knut joined TGS in 2005 as Manager of Operations. In December 2008, he was appointed Vice President Global Services.  






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    • Will Ashby, VP HR & Communication

      Will joined TGS in 2011 with the acquisition of Stingray Geophysical. He has served TGS in a number of Director roles including M&A, Finance, and Investor Relations before being appointed Vice President HR & Communication. 




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    • Tanya Herwanger, VP Africa and Middle East 

      Tanya joined TGS in 2014 as Corporate Counsel. In 2015, she made a cross function move to sales and business development and then in January 2016 was appointed Vice President for the Africa and Middle East business unit. 





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    • Tana Pool, VP General Counsel and Corporate Secretary

      Tana joined TGS in 2013 as VP General Counsel and Corporate Secretary. She has over 25 years of legal experience, with significant knowledge of the energy and construction industries.





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