OSMOSUN: directors' dealings · France · AMF

About OSMOSUN

OSMOSUN is a French company focused on seawater and brackish-water desalination powered by solar energy, with a strong positioning in the low-carbon water market. Founded in 2014 by Marc Vergnet and Maxime Haudebourg, the company was created to address the growing need for clean, affordable and decentralized drinking water solutions in regions affected by water scarcity. Originally known as Mascara NT, the business progressively built the OSMOSUN brand around a proprietary reverse-osmosis desalination technology powered directly by solar energy and designed to operate without batteries. That technical choice is a key differentiator, as it supports lower energy consumption, simpler deployment and a more sustainable operating model. OSMOSUN was listed on Euronext Growth Paris in July 2023 under ISIN FR001400IUV6. The company’s core activities cover the design, engineering and commercialization of turnkey desalination systems. Its solutions span a broad range of capacities, from small autonomous units to larger industrial-scale plants, with reported production capabilities ranging from roughly 1 m3 to 50,000 m3 of water per day. OSMOSUN targets a wide set of end markets, including municipalities, utilities, island communities, humanitarian organizations, military and emergency-response use cases, and industrial customers operating in water-stressed regions. The company also highlights compact containerized systems that can be rapidly commissioned, which is an important advantage in remote or crisis-affected areas. From a commercial standpoint, OSMOSUN has developed an international footprint. By the end of 2023, it had sold 69 desalination units in 27 countries; by the end of 2024, this figure had increased to 78 units sold. Its geographic exposure includes Africa, the Caribbean, Europe, French territories and other water-stressed markets, reflecting the global nature of desalination demand. In 2024, revenues were supported by large contracts signed in prior years as well as smaller projects in Morocco, Tunisia, Polynesia and France, showing a gradual broadening of the company’s customer base and reference portfolio. In 2025, OSMOSUN announced a strategic refocus toward a standardized and modular product range, with the goal of improving commercial efficiency and profitability after a softer sales environment in 2024. The company also strengthened its industrial and shareholder base through its combination with Watera International in 2025, a move intended to deepen its position in sustainable water treatment and wastewater reuse. Overall, OSMOSUN combines a patented clean-water technology platform with structural exposure to the long-term global need for resilient and low-carbon water infrastructure.