Board of Directors

Trond Brandsrud

Chairman

Mr. Brandsrud has over 40 years of financial experience, with 30 years in the oil and gas industry.  Since 2019, he has been an advisor and consultant, as well as a non-executive board member for both listed and privately held companies.  Prior to the merger of PGS with TGS, he served from 2019 as a member of the Board and Audit Committee of PGS.  Since 2016, he has been a non-executive director and chair of the Audit and Risk Committee for AkerBP and since 2023, a non-executive director of Aker Horizons.  Since 2019, he has also served as a non-executive director, chair of the Audit Committee and member of the Risk and Remuneration Committees of Lowell, a private equity backed pan-European credit management services company.  He has also been the chair of Lowell Finans AS, also affiliated with Lowell, since 2021.  He has served as a member of the Board of Waterise, a privately held global desalination company, since 2022.  From 2018 to 2019, he was the Nordic Chief Executive Officer and member of the Group Executive Committee of the Lowell Group.  From 2017 to 2018, he served as Chief Executive Officer of a group of businesses carved out from Intrum and Lindorff and ultimately sold to Lowell, and from 2016 to 2017, he served as the Group Chief Financial Officer of Lindorff.  Mr. Brandsrud served as Chief Financial Officer of the Aker Group from 2010 to 2015 and Seadrill from 2007 to 2010.  From 1983 to 2006, he held various senior level positions with Shell, including the role as European E&P Finance Director from 2003 to 2006.  Mr. Brandsrud was first elected director of TGS in 2024.   

Luis Araujo

Independent Director

Bettina Bachmann

Independent Director

Julie Berg

Independent Director

Ms. Berg has almost 30 years of business and finance experience across the energy, oil & gas services and the technology sectors, including over 25 years of accounting and auditing experience. From 1997 to 2023, Ms. Berg held various positions within KPMG, including as Audit Partner and Head of Audit & Assurance, serving global listed clients in Norway, primarily within the energy and technology sectors. Ms. Berg joined the Aker Group in 2023 as CFO for Aker Carbon Capture ASA (now SLB Capturi). In 2024, Ms. Berg transitioned to the CFO role for the Aker Mainstream Renewables Group before becoming CEO of the Group in January 2026.  She currently serves as a member of the Board for the Jøtul AS (privately held). Ms. Berg is qualified as a Chartered Accountant (ACA) in England and Wales and is a State Authorized Auditor in Norway.  Ms. Berg was first elected as Director of TGS in 2026.  

Anne Grethe Dalane

Independent Director

Ms. Dalane has 40 years of business and finance experience, serving in various senior positions in both Yara International (from 2003 to 2023) and Hydro Norsk (from 1984 to 2003).  During her tenure with Yara, she served as VP Finance Improvement Projects from 2018 to 2023 and other senior level financial, business and human resources roles prior thereto.  At Hydro, she served as Head of Human Resources for Hydro Oil & Energy from 2001 to 2003, VP Strategy for Hydro Corporate from 2000 to 2001 and Chief Financial Officer of Hydro E&P from 2000 to 2006, as well as other financial roles for various Hydro companies from 1984 to 2000.  Prior to PGS’ merger with TGS, Ms. Dalane served from 2013 as a member of the Board of PGS, most recently serving as Vice Chair and head of the Audit Committee.  She also serves as a member (since 2023) of the Nomination Committee of Elkem ASA and as a member (since 2022) of the Board and Audit Committee of Arendal Fossekompani ASA.  Since 2013, she has served as a member of the Board of BW LPG Ltd., and since 2017, as the Head of the Audit Committee.  She also served as the Head of the Remuneration Committee for BW LPG from 2013 to 2017.  Ms. Dalane was first elected director of TGS in 2024.  

Svein Harald Øygard

Independent Director

Mr. Øygard is a business owner, investor and independent advisor, with substantial expertise in the finance and energy industries. From 1983 to the mid-1990s, Mr. Øygard worked within the Norwegian Ministry of Finance and Parliament, lastly as Deputy Minister of Finance. From the mid-1990s, Mr. Øygard held various prominent positions within McKinsey Company, including Global Knowledge Leader Oil & Gas from 2010 to 2014. In 2009, Mr. Øygard served as the Interim Central Bank Governor of the Icelandic Central Bank. From mid-2016, he was the co-founder and Chairman of DBO Energy, which divested assets into the 3R Petroleum (now Brava) initial public offering and subsequently merged with Maha Energy (now Maha Capital). He was also Senior Partner Corporate Finance in Sparebank1 Markets until 2020. He now serves on the Board of several other privately held companies and on the Board of Akershus University Hospital. Mr. Øygard serves as the Chairman of the Board of DOF Group ASA (since 2023).  He was first elected as a Director of TGS in 2021.  

Cristina Reta-Tang

Employee Elected Board Member

Ms. Reta-Tang is a Senior Staff Geophysicist – Imaging and Technology / Latin America with TGS, serving in this position since 2025.  She has significant longevity as an employee of TGS, joining TGS as a processing geophysicist in 1996.  She has served in various roles within the TGS Imaging and Seismic Processing group, including Senior Advising Geophysicist II – Land and Special Projects (2022-2025),  Senior Advising Geophysicist II - Area Geophysics (2018 to 2022) and Seismic Imaging Processing Manager (2011 to 2018).  Ms. Reta-Tang holds a Master of Science in Geophysics & Seismology.  She joined the Board in May 2025. 

Christine Roche

Employee Elected Board Member

Ms. Roche is a Senior Project Owner – Offshore Wind Farm Site Characterization for TGS, serving in this role since June 2024.  She joined PGS (now TGS) in November 2013 as a Geoscientist, and from 2018 to 2021, served in various capacities within the AMME group of PGS.  In 2021, Ms. Roche joined the New Energy business of PGS, serving in various management capacities until her most recent position as Senior Project Owner.  She holds a Master of Science in Petroleum Geoscience.  She joined the Board in May 2025.

Michael Vale

Employee Elected Board Member

Mr. Vale has been a Field Support Geophysicist in the Operations group of TGS since 2018. He joined PGS (now TGS) in 2006 and has served a substantial part of his career working offshore in various geophysical roles within Operations, including Field Engineer/Field Support Geophysicist (2018 to 2025) and Chief Operations Geophysicist (2013 to 2108). Mr. Vale also seconded to the role of Geophysical Supervisor in the onshore Operations group of PGS during 2019. Prior to PGS, he held various roles within the defense and medical fields. He holds a Master of Science in Medical Physics and a Master of Science in Computer Science. He joined the Board in May 2025.