PRESS RELEASE

Unibios Holdings S.A. and OSMOSUN S.A. announce execution of their investment agreement for a future collaboration.

Unibios Holdings S.A confirms the full execution of the investment cooperation agreement with OSMOSUN S.A. Under the terms of this agreement, Unibios contributed to OSMOSUN S.A. cash of €1.610 million and, in-kind, 30% of the share capital of its subsidiary Watera International. As of today, Unibios holds 11,431,173 shares in OSMOSUN S.A., corresponding to 65% voting rights in the company.

OSMOSUN S.A. is a French company listed on Euronext Growth Paris under ticker ALWTR, ISIN FR001400IUV6. Founded in 2014 and based in Gellainville, France, OSMOSUN designs, manufactures, and installs solar-powered desalination systems, converting seawater and brackish water into drinking water. Their patented OSMOSUN® technology operates efficiently without batteries, using photovoltaic energy during the day and, when needed, is connected to the power grid or other sources to ensure 24-hour operation. These systems serve a variety of sectors worldwide, including remote communities, municipalities, hotels, mining sites, and emergency response situations. OSMOSUN currently has over 70 installations in 27 countries.

As of today, OSMOSUN’s market capitalization is €13.26 million.

Date: July 22, 2025

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About the UNIBIOS Group:

UNIBIOS is a holdings company listed on the Athens Stock Exchange. Through its subsidiaries, UNIBIOS Holdings S.A. operates in the fast-growing water treatment, recycling, and reuse markets.

About WATERA International S.A.:

A subsidiary of Unibios Holdings, WATERA International operates via Watera Hellas S.A., a leading Greek water treatment company founded in 1963, with the largest desalination capacity in Greece. Through other subsidiaries, Watera International also operates successfully in the Czech Republic, Bulgaria, and Italy, and has developed significant export activity in Western and Eastern Europe, the Middle East, and Africa.