Disclosure of the total number of voting rights and shares composing the share capital as of April 30, 2026

GTT (Gaztransport & Technigaz) SA – Tél. : + 33 (0)1 30 23 47 89 – Fax : + 33 (0)1 30 23 47 00 – www.gtt.fr
SA au capital de 371.177,72 € – RCS Versailles B 662 001 403 – Siège Social : 1, route de Versailles – 78470 Saint-Rémy-lès-Chevreuse – France

Disclosure of the total number of voting rights and shares composing the share capital as of April 30, 2026

Articles L. 233-8-II of the French Commercial Code and 223-16 of the General Regulation of the Autorité des Marchés Financiers

Saint-Rémy-lès-Chevreuse, May 1, 2026

Investor Relations Contact
information-financiere@gtt.fr / + 33 1 30 23 42 64

Notes

1. Calculated on the basis of all the shares to which voting rights are attached, including shares stripped of voting rights (pursuant to article 223-11 of the General Regulation of the Autorité des marchés financiers).
2. Excluding treasury shares