Onterris stock quoted at EUR 13.35 after PFAS prototype update

On October 21, 2026, Onterris completed a prototype project for PFAS treatment at the former Naval Air Station Joint Reserve Base Willow Grove in Horsham, Pennsylvania. The milestone was reported by Markets Insider, citing TipRanks.

Prototype meets technical requirements

The project used Onterris' regenerable ion exchange resin technology to treat PFAS associated with aqueous film-forming foam in groundwater. The company said the process removes PFAS from the liquid waste stream and produces a concentrated residual suitable for destruction.

According to the report, a Defense Innovation Unit success memo formally recognized the successful execution of the competitively awarded prototype. The program was funded through the Environmental Security Technology Certification Program in partnership with the Defense Innovation Unit.

Late quote remains unchanged

A Lang & Schwarz quote dated October 29, 2026, at 22:59:44 Berlin time showed Onterris stock at EUR 13.35. The displayed previous close was also EUR 13.35, while the bid was EUR 13.30 and the ask EUR 13.40. The quote is a late electronic-market snapshot and is not a Xetra closing-price comparison.

For investors, the prototype is relevant because the memo may support a route toward follow-on federal production and deployment without another competitive process, as reported by Markets Insider. It does not by itself establish the timing or size of future contracts.

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