Sedgman appointed to conduct the Lithium de France’s FEED

Pau, September 8, 2025 – Arverne Group (ISIN code: FR001400JWR8, ticker symbol ARVEN), an industrial player specializing in the production of renewable underground resources,announces that its subsidiary Lithium de France has selected Sedgman, a leading provider of minerals processing and associated infrastructure solutions to the global resources industry.

Sedgman has been selected to deliver the Front-End Engineering Design (FEED)1 for Lithium de France’s project in Alsace, by providing engineering design and development services for Lithium de France’s extraction, concentration and refining plants, to produce a battery grade lithium carbonate.

The FEED, as part of the DFS[1]are key milestones of the pre-industrial phase started in 2025, with an expected duration of 12 to 18 months. This study aims to precise the results of the Pre-Feasibility Study (PFS)[2] and to lead to a final investment decision for the project.

Grant Fraser, Sedgman Managing Director said: “As we expand our services in Europe, this project recognizes Sedgman’s extensive experience in lithium project delivery and our collaborative approach in working closely with clients, providing more than engineering services.”

Pierre Brossollet, founder and Chairman & CEO at Arverne Group said: "We look forward to working with Sedgman. Arverne Group with Lithium de France aims to become a key contributor to the country’s future lithium supply. The project is strategically aligned with the European Union’s Critical Raw Material Act and France’s growing commitment to securing access to essential minerals. Its relevance is further reinforced by the anticipated surge in lithium demand driven by large-scale battery production in Europe."

[1] DFS: Definitive Feasibility Study

[2] Arverne-Group-Interim-2024-results.pdf