Orestone Expands Francisca Gold - Silver Project to Twenty-Three Square Kilometres and Acquires Important Geophysical Survey Data

Vancouver, British Columbia--(Newsfile Corp. - June 4, 2026) - Orestone Mining Corp. (TSXV: ORS) (OTC Pink: ORESF) (FSE: O2R2) ("Orestone" or the "Company") is pleased to announce the expansion of the Francisca Gold-Silver Project with the acquisition of the Francisca II concession and the purchase of historic geophysical survey data over the current and new land positions. The Francisca Gold-Silver Project now encompasses twenty three (23) square kilometres of mineral concessions located in Salta Province, northwestern Argentina approximately 80 kilometres northwest of the city of Salta.