TGS Leadership

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 Tietoevry). Mr. Johansen also has experience from executive and board positions in the construction, banking and oil industries. Mr. Johansen currently serves as a Non-Executive Director of Valaris LTD and is the former Chairman of the EnerGeo Alliance. 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.

Sven Børre Larsen

Chief Financial Officer

Sven Børre Larsen has served as CFO of TGS from 2015 until 2019 when he assumed the position of Head of Strategy and M&A. Mr. Larsen re-assumed the role of CFO in August 2021. Before joining TGS in 2015, Mr. Larsen was CFO of Prosafe, the world’s leading owner and operator of semisubmersible accommodation vessels for the offshore oil and gas industry. Mr. Larsen was also CFO of Prosafe Production, one of the world’s leading FPSO contractors. Mr. Larsen holds an M.S. degree in business specializing in finance from Bodo Graduate School of Business in Norway. He is a Norwegian citizen and resides in Oslo, Norway.

Whitney Eaton

EVP People & Sustainability

Whitney joined TGS in 2014 as Corporate Compliance Director and was appointed to Vice President, Compliance, in August 2019. She gained additional responsibility for TGS’ ESG program before becoming Executive Vice President, Compliance and ESG, in February 2021. Her background includes almost 15 years of legal experience, with significant knowledge on implementing and managing holistic corporate compliance programs. She received her JD degree from the University of Richmond School of Law and her BA in Public Communication with University Honors from American University.

Jan Schoolmeesters

EVP Digital Energy Solutions

Jan joined TGS with the acquisition of Spectrum where he had been the COO since 2011, responsible for global operations and executing the company’s strategic growth plan. Prior to Spectrum, he served 16 years at PGS in various technical, operational and commercial leadership roles, including regional responsibility for the Asia Pacific business. Jan holds a master’s degree in earth sciences and a Ph.D. in geophysics from Delft University of Technology.

Tana Pool

EVP Legal

Tana serves as an Executive Vice President - Legal and General Counsel, joining TGS in 2013. Her background includes a combination of legal and accounting experience, with significant knowledge of the energy sector. Prior to TGS, Tana worked with several global law firms, specializing in corporate and transactional law, and served as the general counsel of a publicly traded construction contractor focused on energy infrastructure. She received her BBA degree in accounting in 1982 from Texas Tech University and her JD degree from the University of Houston Law Center in 1992. She is also licensed as a Certified Public Accountant.

Will Ashby

Chief Integration Officer

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, Marketing, EVP – North America & Onshore, and EVP – Eastern Hemisphere. In January 2024 he was appointed Chief Integration Officer, responsible for delivering the successful integration of TGS and PGS. Will has over 25 years of experience in the oil & gas industry, having worked with BP, QinetiQ and a number of start-up E&P service companies. Will received M.A. and B.A. degrees in geography (both with honors) from the University of Oxford in 1997.

David Hajovsky

EVP Multi-Client

David joined TGS in 2017 as Director
of Business Development in Western
Hemisphere. David later held regional VP roles, firstly managing the Latin America business and later the Africa, Mediterranean, Middle East and Asia Pacific business. David assumed the role of EVP – Western Hemisphere in 2021 which he held until 2024 when he then became the EVP for the global  Multi-Client business. Prior to joining TGS, he spent nearly nine years with PGS based in Houston, working in both the Onshore and Marine groups. David received his M.B.A. (with distinction) from Robert Gordon University in 2011 and his B.S. degree in microbiology from The University of Texas in 2005

Carel Hooijkaas

EVP Acquisition

Carel Hooijkaas has over 25 years of experience in the oilfield services and equipment industry. Before joining TGS, Carel was the CEO of Magseis Fairfield from October 2019 to January 2023. Prior to that Carel worked for Schlumberger, where he was responsible for the Integrated Services Management operations. Previous leadership positions at Schlumberger have included President WesternGeco, Vice President Integrated Project Management and Production Management for Europe & Africa, North Sea GeoMarket Manager, Vice President for WesternGeco’s Global Marine business, WesternGeco West Africa Region Manager, and various other roles in Operations and Engineering. Carel started his career at Schlumberger as Navigation Shift Leader onboard seismic acquisition vessels. He holds a MSc in Measurement & Control from Delft University of Technology in the Netherlands.

Wadii El Karkouri

EVP Imaging & Technology