SAGUENAY, QUEBEC – (June 18, 2026) – Arianne Phosphate Inc (the “Company” or “Arianne”) (TSX VENTURE: DAN; OTCQB: DRRSF; FRANKFURT: JE9N), a development-stage phosphate mining company, advancing it’s Lac à Paul project in Quebec’s Saguenay-Lac-Saint-Jean region, is pleased to announce that it has successfully completed the production of purified phosphoric acid (“PPA”) with its partner Travertine Technologies.  As announced in November of 2025, the companies partnered by way of an MoU to test the ability of producing PPA by combining Travertine’s proprietary process with Arianne’s high-purity phosphate concentrate and, subsequently, signed the joint-venture framework agreement earlier this month (see Press Release dated June 2, 2026). Following the establishment of the partnership, Arianne provided samples of its phosphate concentrate to be processed at Travertine’s facility in Boulder, Colorado.  Pilot scale testing was successfully performed demonstrating proof of concept on the process and production of a high-quality PPA.  Further, Travertine has demonstrated that over 95% of the sulphur used in the process of making PPA can be recaptured and recycled, providing a virtually closed loop system.  The PPA produced using the process met specifications required for LFP batteries as well as other technical-grade applications.  “These results are extremely encouraging as Arianne looks