SAGUENAY, QUEBEC – (April 9, 2026) – Arianne Phosphate (the “Company” or “Arianne”) (TSX VENTURE: DAN; OTCQB: 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 it has received very positive preliminary results from ongoing testing designed to better quantify the production split of the phosphoric acid derived from the Company’s highpurity phosphate concentrate.  Results received from Corem indicate that up to 80% of the acid could be upgraded to purified phosphoric acid (“PPA”), a premium-priced end-product used in advanced applications such as the LFP battery and, as a direct food additive. “Phosphate concentrate can generally be processed into three major classes of acid,” explained Raphael Gaudreault, COO of Arianne Phosphate.  “Phosphate is best known for its use in dry-bulk fertilizers, a high-volume, lower-margin product.  Beyond this however, if the underlying phosphate concentrate quality allows, higher-end products can be obtained such as good-quality green phosphoric acid used in animal feeds and specialty fertilizers, ascending through various grades of PPA, including a premium ‘white acid.’  The better your phosphate concentrate, the better your chances of producing a higher ratio of the premium products.  These results demonstrate Arianne’s