TGS ASA

TGS Awarded Large Streamer Contract Offshore Indonesia

OSLO, Norway (25 August 2025) - TGS, a leading provider of energy data and

intelligence, is pleased to announce the award of a large streamer contract

offshore Indonesia, covering approximately 10,000 square kilometers.

Much of the project will focus on acquiring 3D seismic data for exploration

purposes, with the final phase of approximately one month dedicated to 4D

seismic data acquisition for production monitoring. The survey is scheduled to

commence in Q4 2025 and will span an estimated total duration of approximately

eight months.

Kristian Johansen, CEO of TGS, commented, "We are very pleased to have been

awarded this significant streamer contract. We will acquire the survey with a

purpose-built Ramform designed vessel, equipped with our proprietary GeoStreamer

technology, ensuring delivery of high-quality data to the client, while

acquisition efficiency is maintained at industry leading levels. With an

acquisition period of approximately eight months, this contract secures

utilization well into Q3 2026."

For more information, visit TGS.com (http://www.tgs.com) or contact:

Bård Stenberg

VP IR & Communication

Mobile: +47 992 45 235

About TGS

TGS provides advanced data and intelligence to companies active in the energy

sector. With leading-edge technology and solutions spanning the entire energy

value chain, TGS offers a comprehensive range of insights to help clients make

better decisions. Our broad range of products and advanced data technologies,

coupled with a global, extensive and diverse energy data library, make TGS a

trusted partner in supporting the exploration and production of energy resources

worldwide. For further information, please visit www.tgs.com

(https://www.tgs.com/).

Forward Looking Statement

All statements in this press release other than statements of historical fact

are forward-looking statements, which are subject to a number of risks,

uncertainties and assumptions that are difficult to predict and are based upon

assumptions as to future events that may not prove accurate. These factors

include volatile market conditions, investment opportunities in new and existing

markets, demand for licensing of data within the energy industry, operational

challenges, and reliance on a cyclical industry and principal customers. Actual

results may differ materially from those expected or projected in the forward-

looking statements. TGS undertakes no responsibility or obligation to update or

alter forward-looking statements for any reason.

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