Jeantet advises RGREEN INVEST on a €52.4 million investment in the holding company of the founder of Arverne Group
Paris, July 10, 2026 – Jeantet advised RGREEN INVEST on a €52.4 million investment in the holding company of the founder of Arverne Group, a company listed on the regulated market of Euronext Paris.
RGREEN INVEST and Pierre Brossollet, founder and CEO of Arverne, a leading French provider of geothermal solutions listed on the regulated market of Euronext Paris, have entered into a strategic partnership under which RGREEN INVEST, via its INFRAGREEN V fund, has invested €52.4 million in GEOGREEN, Pierre Brossollet’s holding company.
This transaction also involved the acquisition by GEOGREEN of Arverne shares through off-market block trades from long-standing minority shareholders, as well as the transfer by Pierre Brossollet, via his private holding company Arosco, of all his Arverne shares to GEOGREEN, thereby reclassifying his indirect stake in Arverne. These transactions were accompanied by a capital increase in GEOGREEN subscribed to by INFRAGREEN V, following which Pierre Brossollet remains the majority shareholder in GEOGREEN. As a result of these transactions, GEOGREEN holds approximately 25.76 per cent of the share capital and 19.93 per cent of the voting rights in Arverne. Arosco and INFRAGREEN V, acting in concert with regard to Arverne, intend to keep GEOGREEN’s stake in Arverne below the 30 per cent threshold of shares and/or voting rights.
This investment will enable GEOGREEN to become the lead subscriber in the proposed issue of bonds (ORANE) to be issued by Arverne, with an investment of €37 million out of a total of €70 million, alongside Bpifrance, Eiffel Essentiel, ADEME Investissement and Crédit Mutuel Equity. The funds raised will finance the roll-out of Arverne’s “Dual Flow” strategic plan, which positions the company as a key player in geothermal energy and underground energy infrastructure in France and Europe.
In parallel with the completion of the transaction, GEOGREEN has been co-opted onto Arverne’s board of directors and will be represented by Alexis Broders, Managing Partner of RGREEN INVEST.
Jeantet (Legal counsel of RGREEN INVEST): Cyril Deniaud (Partner, Capital Markets), Benjamin Cohu (Counsel, Capital Markets), Constance Bégué (Associate, Capital Markets), Gabriel di Chiara (Partner, Tax) and Hugo Cherqui (Associate, Tax).
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