- Business
- Unibios Holdings S.A. (BIOSK.AT) operates as a holding company focused on technologies for the sustainable use of water and energy, developing, installing, and servicing water treatment, recycling, and desalination systems; heating, ventilation, and air-conditioning equipment; facade scaffolding installation and rental; and construction tools for civil engineering sites. Through its main subsidiary Watera International S.A., registered in Luxembourg and encompassing Watera Hellas S.A. (founded in 1963 as the leading provider of desalination capacity in Greece), Culligan Hellas (water treatment via desalination, filtration, and reverse osmosis), Aquatronics (domestic water filters, swimming pools, and spas), and Biossol (environmentally friendly heat recuperation, solar heating, and low-nitrogen oxide burners), the company serves industrial, municipal, domestic, and construction sectors with operations across Europe (Greece, Czech Republic, Bulgaria, Italy), the Middle East, and Africa. Founded in 1963 with origins in heating and air conditioning, Unibios Holdings S.A., formerly Biossol S.A. until its name change in July 2008, is headquartered in Greece and listed on the Athens Stock Exchange. In 2025, the company executed a major strategic investment by acquiring a 65% majority stake in OSMOSUN S.A., a French solar desalination firm listed on Euronext Growth Paris (ALWTR), through a €1.6 million cash contribution and an in-kind transfer of 30% of Watera International's share capital, valued at €6.6 million, aiming to consolidate water treatment activities under Osmosun and enhance solar-powered desalination offerings globally with over 70 installations in 27 countries.