TGS Leadership

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

Executive Leadership

Kristian-475x510

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 Tietoevry). 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) and is the 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-Larsen-Borre_Hart

Sven Børre Larsen

Chief Financial Officer

Sven Børre Larsen

Chief Financial Officer

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

Whitney-Eaton-2021-475x510

Whitney Eaton

EVP People & Sustainability

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-NewBG2

Jan Schoolmeesters

EVP Digital Energy Solutions

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-475x510

Tana Pool

EVP Legal

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-2021-475x510

Will Ashby

EVP East Hemisphere

Will Ashby

EVP East Hemisphere

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 had executive responsibility for the North America business from January 2019 until moving to the role of Executive Vice President, Eastern Hemisphere in March 2021. Will has over 23 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.

EXEC-DAVID-HAJOVKSY-MARCH-2021-web-475x510update

David Hajovsky

EVP West Hemisphere

David Hajovsky

EVP West Hemisphere

David joined TGS in 2017 as Director of Business Development in Western Hemisphere. In 2018 he took on the role of VP Latin America and oversaw the unit during the integration of Spectrum post-merger. David’s latest assignment was VP of Africa, Mediterranean, Middle East and Asia Pacific before assuming the role of EVP Western Hemisphere in 2021. Prior to joining TGS, he spent nearly 9 years with PGS based in Houston, working in both the Onshore and Marine groups. David received his MBA (with distinction) from Robert Gordon University in 2011 and his B.S. degree in microbiology from the University of Texas in 2005.

Carel-Hoojikaas-475x510

Carel Hooijkaas

EVP Acquisition

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.

Josef-Heim-475x510

Josef Heim

EVP Imaging

Josef Heim

EVP Imaging

Josef joined TGS in 2015, starting as Senior Technical Advisor and Chief Geophysicist for marine processing in Calgary, Canada. In 2019 he became Director for Imaging and Reservoir Services in Calgary. He oversaw the transition of a core team to TGS Houston after Imaging Services for North America was consolidated in 2020. Josef led the Land and Special Projects team in Houston until he was assigned as interim SVP for Imaging in 2022 and started his role as EVP for Imaging in 2023. Before joining TGS, he spent 17 years with WesternGeco/SLB in various roles based in Venezuela, Houston, and Calgary. He worked in various seismic data processing roles for onshore, offshore, time processing, and depth imaging projects. Josef received his Geophysics degree from the Ludwig Maximilians Universitaet in Munich, Germany.