SAGUENAY, QUEBEC – (June 2nd, 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 signed its Joint Venture Framework Agreement with Travertine Technologies Inc. (“Travertine”) which will serve as the template for its final shareholder agreement between the parties. As previously announced (see Press Release dated November 6, 2025), Arianne partnered with Travertine, by way of a Memorandum of Understanding (“MoU”), for the production of purified phosphoric acid (“PPA”) by combining Travertine’s proprietary process with Arianne’s high-purity phosphate concentrate. Arianne’s phosphate concentrate is a perfect feedstock for the Travertine process given its high-purity, low-contaminant nature. Travertine’s phosphate process can produce PPA from phosphate concentrate using recycled sulfuric acid, addressing both the significant cost and supply concerns that are now being felt in the sulphur and phosphate markets. As well, the process eliminates phosphogypsum waste, converting it into material that can be used in several other industries, resulting in a more environmentally friendly process and enhanced economics. The PPA produced from this process would meet the requirements necessary for LFP batteries, as