SAGUENAY, QUEBEC – (November 6, 2025) – Arianne Phosphate (the “Company” or “Arianne”) (TSX VENTURE: DAN; OTCQX: DRRSF; FRANKFURT: JE9N), a development-stage phosphate mining company, advancing the Lac à Paul project in Quebec’s Saguenay-Lac-Saint-Jean region, is pleased to announce that the Company has partnered, by way of a Memorandum of Understanding (“MoU”), with Travertine Technologies Inc. (“Travertine”) for the production of purified phosphoric acid (“PPA”) by combining Travertine’s proprietary process with Arianne’s high-purity phosphate concentrate. Travertine’s phosphate process produces PPA from phosphate concentrate using recycled sulfuric acid, eliminating a substantial cost associated with PPA production. Further, this process eliminates phosphogypsum waste, while producing carbon-neutral or carbon-negative materials for cements, making it environmentally friendly. Arianne’s phosphate concentrate is a perfect feedstock for this process given its high-purity, low-contaminant nature. Current work is on-going to advance engineering on a Phase 1 small commercial facility expected to produce PPA for use in lithium iron phosphate (“LFP”) cathode active materials (“CAM”) production. “We are excited to be working with Travertine on this venture,” said Brian Ostroff, Head of Strategic and Business Initiatives. “This partnership plays directly into Arianne’s strategy of not only being a miner of phosphate but in also being a producer of