ARVERNE GROUP: Total number of shares and voting rights in the share capital as of August 31, 2026

Total number of shares and voting rights in the share capital

as of August 31, 2026

Pau, September 8, 2026 – Arverne (FR001400JWR8 – ARVEN),the leading French supplier of geothermal solutions, publishes information relating to the total number of voting rights and the number of shares in its share capital, in accordance with the provisions of article R. 22-10-23 of the French Commercial Code.

Date	Total number of shares in the capital	Total number of voting rights
August 31, 2026	42 560 997	Number of theoretical voting rights: 54,213,227 Number of exercisable voting rights**: 54,181, 743

* Excluding class A2, A3 and A4 preference shares

** After deduction of 31,484treasury shares

About ARVERNE

ARVERNE is the leading French supplier of geothermal solutions.

It specialises in harnessing natural ground resources to transform them into local energy sources for heating and cooling systems and to extract lithium. A mission-driven company listed on Euronext Paris, Arverne works for local authorities and industrial companies with a focus on energy sovereignty and short supply chains.

www.arverne.earth

Contacts:

Investor relations: Mathilde Guillemot investor.relations@arverne.earth +33 (0)6 64 18 35 55

Press relations: Enora Budet enora.budet@seitosei-actifin.com +33 (0)6 72 17 84 60