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 and board positions in the construction, banking and oil industries. Mr. Johansen currently serves on the board of directors for the National Ocean Industries Association (NOIA). 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.
Fredrik Amundsen
Chief Financial Officer
Fredrik Amundsen
Chief Financial Officer
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, VP of Europe & Russia, SVP Europe and Asia Pacific, and most recently EVP Europe & Russia before assuming the role of CFO in 2020. Fredrik received B.A. (with honors) in business administration from Washington State University in 2001.
Jan Schoolmeesters
EVP Operations
Jan Schoolmeesters
EVP Operations
Jan joined TGS with the acquisition of Spectrum where he was the COO since 2011. Prior to Spectrum he gained substantial experience in the seismic industry having served 16 years in various roles in PGS with a technical, operational, and commercial background. Jan holds a Master’s degree in Earth Sciences and a Ph.D. in Geophysics from Delft University of Technology (the Netherlands).
Will Ashby
EVP North America
Will Ashby
EVP North America
Will joined TGS in 2011 with the acquisition of Stingray Geophysical. He has served TGS in a number of leadership roles including M&A, Finance, Investor Relations, HR and Marketing. Will was appointed Senior Vice President of North America in January 2019. Will has over 21 years of experience in the oil & gas industry, having worked with BP, QinetiQ and a number of start-up E&P services companies. Will received M.A. (with honors) and B.A. (with honors) degrees in geography from the University of Oxford in 1997.
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Rune Eng
EVP International
Rune Eng
EVP International
Rune joined TGS with the acquisition of Spectrum. He has a broad range of experience in the seismic industry. He has held various executive positions in the oil industry, most recently as CEO of Spectrum and before that in Petroleum Geo-Services (PGS), Fugro-Geoteam, Sevoteam and a senior consultant position in Digital Equipment Computing (DEC). Rune is a Norwegian.
Tanya Herwanger
EVP Support & Staff
Tanya Herwanger
EVP Support & Staff
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 Africa and Middle East. Prior to joining TGS, she spent eight years with Schlumberger based in the US and in the UK. Tanya received her Law degree from the University of London, Queen Mary and Westfield College and professional legal qualifications from the Inns of Court School of Law in London and previously served as a dual qualified Solicitor in the UK and in her native home of Belize.
Tana Pool
EVP Legal
Tana Pool
EVP Legal
Tana joined TGS in 2013 as General Counsel and Corporate Secretary, and in January 2019, gained additional executive responsibility for HR. Her background includes over 26 years of legal experience and 7 years of accounting experience, with significant knowledge of the energy sector. Tana previously served for over six years as the general counsel of a publicly traded construction contractor focused on energy infrastructure. Her legal background also includes over nine years in private practice in corporate and transactional law with several global law firms. She received her BBA degree in Accounting from Texas Tech University and her JD degree from the University of Houston Law Center. She is also licensed as a Certified Public Accountant.