SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 FORM 20-F (Mark One) ☐ REGISTRATION STATEMENT PURSUANT TO SECTION 12(B) OR (G) OF THE SECURITIES EXCHANGE ACT OF 1934 OR ☒ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the fiscal year ended: December 31, 2024 OR ☐ TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934 For the transition period from __________ to __________. OR ☐ SHELL COMPANY REPORT PURSUANT TO SECTION 13 O ...

Company Announcement - TGS will release its Q1 2025 results on May 9, 2025, at 07:00 a.m. CEST [1] - The results presentation will be conducted by CEO Kristian Johansen and CFO Sven Børre Larsen at 09:00 a.m. CEST in Oslo, Norway [1] - The presentation will be open to the public and available via live webcast [1] Webcast Information - Attendees can access the webcast through a provided link or via the TGS website [2] - The Q1 2025 earnings release and presentation will be accessible on newsweb.no and TGS's official website [2] Company Overview - TGS is a global provider of energy data and intelligence, offering advanced technology and solutions across the energy value chain [3] - The company supports clients in making informed decisions through a comprehensive range of insights and a diverse energy data library [3] - TGS is recognized as a trusted partner in the exploration and production of energy resources worldwide [3]

Transportadora De Gas Sa Ord B (TGS) shares rallied 10.2% in the last trading session to close at $23.96. This move can be attributable to notable volume with a higher number of shares being traded than in a typical session. This compares to the stock's 10.4% loss over the past four weeks.Transportadora De Gas Ord B’s shares rallied on the last trading day. The bullishness could be attributed to the partnership’s business model designed to earn stable fee-based revenues from key midstream assets that are be ...

Core Insights - TGS ASA reported a significant year-on-year improvement in asset utilization for Q1 2025, with a normalized Ocean Bottom Node (OBN) crew count increasing from 1.9 in Q1 2024 to 2.8 in Q1 2025 for contract work, and from 0.0 to 0.2 for multi-client work [1] - The allocation of active seismic streamer 3D vessel capacity showed an increase in multi-client capacity from 30% in Q1 2024 to 36% in Q1 2025, indicating a positive trend in multi-client activity [1] - TGS expects a multi-client investment of approximately USD 130 million for Q1 2025, reflecting higher-than-expected investments in new data [1][2] Company Performance - CEO Kristian Johansen highlighted the healthy multi-client activity levels, particularly in frontier areas, and emphasized the company's strong balance sheet and leading assets [2] - The number of vessels decreased from 7 in Q1 2024 to 6 in Q1 2025, with a notable reduction in stacked/standby vessels from 21% to 13% [1] - TGS will release its Q1 2025 results on May 9, 2025, with a live presentation open to the public [2][3]

Core Insights - TGS has secured a shallow water OBN acquisition contract in Trinidad, with the 3D baseline survey set to begin in early Q3 and lasting approximately 80 days [1][2]. Company Overview - TGS is a leading provider of energy data and intelligence, offering advanced technology and solutions across the entire energy value chain [3]. - The company emphasizes its extensive and diverse energy data library, which supports exploration and production of energy resources globally [3]. Technology and Market Position - TGS's OBN technology is recognized as the preferred choice in the industry, aligning with clients' production budgets and asset optimization initiatives [2]. - The company has a proven track record in project execution, ensuring efficient delivery of high-quality data and insights to clients [2].

OSLO, Norway (1 April 2025) – TGS, a leading global provider of energy data and intelligence, announces the commencement of a new Multi-Client Ultra Long Offset Ocean Bottom Node (OBN) data acquisition campaign in the Gulf of America. The Amendment 4 project will expand node coverage in TGS' Multi-Client library, adding over 1,100 square kilometers in the Mississippi Canyon, Ewing Banks, and Grand Isle South areas. Forward Looking Statement All statements in this press release other than statements of histo ...

Tariff Adjustments - Transportadora de Gas del Sur S.A. announced a 2.5% increase in the Transitory Tariff Charts for the Natural Gas Transportation Service, effective January 1, 2025[7] - The tariff adjustment was approved by the Argentine Gas Regulatory Body (ENARGAS) through Resolution no. Nº 915/2024[7] - The new tariff charts will impact the company's revenue from natural gas transportation services starting in 2025[7]

Core Insights - TGS, a leading global provider of energy data and intelligence, published its 2024 annual report and Management Remuneration Report (MRR) [1][2] - The annual report is available in European Single Electronic Format (ESEF) and can be accessed through TGS's website [2] - TGS offers advanced data and intelligence solutions across the entire energy value chain, supporting exploration and production of energy resources globally [3] Company Overview - TGS provides a comprehensive range of insights to help clients in the energy sector make informed decisions [3] - The company utilizes leading-edge technology and has a diverse energy data library, establishing itself as a trusted partner in the industry [3]

Core Points - Carel Hooijkaas received 12,536 shares from the 15,000 Restricted Share Units granted, with the remaining shares' fair market value used for withholding obligations [1] - After the transaction, Carel Hooijkaas owns a total of 50,694 shares in TGS, while TGS has 175,238 treasury shares remaining [2] Company Overview - TGS provides advanced data and intelligence to companies in the energy sector, utilizing leading-edge technology and solutions across the entire energy value chain [3] - The company offers a comprehensive range of insights to assist clients in making informed decisions, supported by a diverse energy data library [3]

Oslo, Norway (13 March 2025) – In February 2019, TGS implemented an Employee Share Purchase Plan (ESPP) pursuant to which eligible employees can purchase TGS common shares at a discount through payroll deductions. The ESPP operates in six-month periods, and at the end of each period, employees in eligible jurisdictions (United States, United Kingdom and Canada) have the option to purchase stock at a 15% discount to the market price at the time of purchase. The plan sets a maximum purchase of shares per empl ...