GTT - Gaztransport et Technigaz

Report Publication Announcement • Apr 28, 2025

NOTICE OF AVAILABILITY OF THE 2024 UNIVERSAL REGISTRATION DOCUMENT INCLUDING THE ANNUAL FINANCIAL REPORT

Paris – April 28, 2025 - The 2024 Universal Registration Document, including the Annual Financial Report, of GTT (Gaztransport et Technigaz), a technology and engineering company specialised in the design of membrane containment systems for the transportation and storage of liquefied gas, was filed with the French stock market authorities (AMF) on April 25, 2025.

The French version is publicly available, in accordance with applicable legislation, and may be downloaded from the "Finance" section of the GTT's website at www.gtt.fr.

The English version of the 2024 Universal Registration Document will soon be available on GTT's website.

The 2024 Universal Registration Document includes, among other items:

• the annual financial report;
• the management report;
• the report on sustainability information;
• the report on corporate governance;
• information on the fees paid to the statutory auditors;
• documents related to the combined shareholders' meeting to be held on June 11, 2025 (agenda, draft resolutions and report of the Board of Directors to the combined shareholders' meeting); and
• the description of the share buyback program.

Financial agenda

• Shareholders' Meeting: June 11, 2025
• Ex-dividend date of the balance of the dividend for the 2024 financial year¹ : June 17, 2025
• Payment of the balance of the dividend for the 2024 financial year¹ : June 19, 2025
• Publication of the 2025 half-year results: July 29, 2025 (after market close)
• 2025 third-quarter results: October 31, 2025 (after market close)

Investor relations contact:

information-financiere@gtt.fr / +33 1 30 23 20 87

Media contact: press@gtt.fr / +33 1 30 23 20 43

For more information, visit www.gtt.fr.

¹ Subject to the necessary approvals at the Shareholders' Meeting of June 11, 2025.

About GTT

GTT is a technology and engineering group with expertise in the design and development of cryogenic membrane containment systems for use in the transport and storage of liquefied gases. Over the past 60 years, the GTT Group has designed and developed, to the highest standards of excellence, some of the most innovative technologies used in LNG carriers, floating terminals, onshore storage tanks and multi-gas carriers. As part of its commitment to building a sustainable world, GTT develops new solutions designed to support ship-owners and energy providers in their journey towards a decarbonised future. As such, the Group offers systems designed to enable commercial vessels to use LNG as fuel, develops cutting-edge digital solutions to enhance vessels' economic and environmental performance, and actively pursues innovation in the field of low-carbon solutions.

GTT is listed on Euronext Paris, Compartment A (ISIN FR0011726835 Euronext Paris: GTT) and is notably included in the CAC Next 20, SBF 120, Stoxx Europe 600 and MSCI Small Cap indices.