TGS Leadership

TGS' leadership team is lead by Chief Executive Officer (CEO), Kristian Johansen and supports the Chief Executive Officer and implements all Board resolutions and supervises all management levels at TGS.

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Kristian Johansen

Chief Executive Officer

Kristian Johansen

Chief Executive Officer

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). Mr. Johansen also has experience from executive positions in the construction, banking and oil industries. A native of Norway, Kristian earned his undergraduate and Master’s degrees in business administration from the University of New Mexico in 1998 and 1999.

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Sven Børre Larsen

Chief Financial Officer

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. He has also been CFO of Prosafe Production, which was one of the world’s leading FPSO contractors. Sven holds a M.S. degree in Business with a specialization in finance from Bodo Graduate School of Business in Norway.

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Knut Agersborg

SVP Global Services

Knut Agersborg

SVP Global Services

Knut joined TGS in 2005 as Manager of Operations. In December 2008, he was appointed Vice President Global Services. Knut has more than 30 years of industry experience including 22 years with Schlumberger/ WesternGeco where he held senior managerial positions in Operations and Human Resources in Europe and North America. Knut graduated from Narvik University College in 1979 with a degree in Electronic Engineering.

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Katja Akentieva

SVP Onshore & GPS

Katja Akentieva

SVP Onshore & GPS

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. Katja received her Master’s degree in geology and geophysics from Moscow State University in 1996, she also holds a Bachelor’s degree in Foreign Languages from Moscow State University and an MBA from the Erasmus University in the Netherlands.

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Fredrik Amundsen

SVP Europe/Russia

Fredrik Amundsen

SVP Europe/Russia

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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Will Ashby

SVP Investor Relations, HR & Communication

Will Ashby

SVP Investor Relations, 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 in 2016. Prior to founding Stingray Geophysical, Will worked in various commercial positions with BP, TradeRanger and QinetiQ. Will received M.A (Hons) and B.A (Hons) degrees in Geography from the University of Oxford in 1997. 

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Erik Finnstrom

SVP New Ventures

Erik Finnstrom

SVP New Ventures

Erik joined TGS in 2018 as Senior Vice President New Ventures. Prior to joining TGS, Erik served as Senior Vice President Exploration Excellence of Statoil (now Equinor). Mr. Finnstrom has over 30 years’ industry experience in roles such as SVP Exploration North America, VP South Atlantic Exploration and VP Western Hemisphere Exploration and Chief Geophysicist for Statoil and Norsk Hydro as well as in research positions at Chevron and the Norwegian Institute of Technology. Erik graduated with a B.S. in Geophysics from UCLA in 1979 and an M.A. in Geophysics from UC Berkeley in 1981.

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Zhiming Li

SVP Imaging

Zhiming Li

SVP Imaging

Zhiming joined TGS in 2007 as Senior VP of Data Processing, Research & Development. He has 32 years’ experience in oil companies, geophysical companies and academia. In 2003, he became one of the partners of Parallel Data Systems, a premier depth imaging company acquired by TGS in 2007. He received a B.S. degree in Exploration Geophysics from East China Petroleum Institute in 1982 and a Ph. D. degree in Geophysics from Stanford University in 1986.

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Tana Pool

SVP & General Counsel

Tana Pool

SVP & General Counsel

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. Tana’s previous experience includes over nine years of private practice in corporate and transactional law with several global law firms, including most recently Akin Gump Strauss Hauer & Feld LLP. Tana received her BBA degree in Accounting from Texas Tech University and her JD degree from the University of Houston Law.