Rio2 files NI 43-101 report on Kalzas tungsten project, Yukon

VANCOUVER, British Columbia, July 14, 2026 (GLOBE NEWSWIRE) -- Rio2 Limited (“ Rio2” or the “Company ”) (TSXV: RIO; OTCQX: RIOFF; BVL: RIO) announces that the Company has filed on SEDAR+ an independent NI 43-101 Technical Report (the “Report”) supporting historical data, geology and potential of the Kalzas Tungsten Project located in Yukon, Canada. The Report is entitled “Technical Report for the Kalzas Tungsten Project, Yukon, Canada” (the “Technical Report”). The report was independently prepared by Tatiana Alva Jimenez, M.Sc., P.Geo., of RUMI Geoscience Consulting on behalf of the Company in accordance with National Instrument 43-101- Standards of Disclosure for Mineral Projects (“NI 43-101”), dated July 10, 2026, with an effective date of June 19, 2026.

The Technical Report is available on the Company’s website at www.rio2.com and on SEDAR+ at www.sedarplus.ca . About the Kalzas Tungsten Project The Kalzas Tungsten Project (the “Kalzas Project”) consists of eight quartz mineral claims totalling approximately 155 hectares, situated within the Selkirk First Nation Settlement Land Block SFN-R-16A. The claims are active and verified as in good standing.

The Kalzas Project is located on the Kalzas Plateau in central Yukon Territory, Canada, south of the Stewart River, approximately 70 km southeast of Mayo and 290 km north of Whitehorse. The property is accessible from Whitehorse to Mayo, via the Klondike Highway to Stewart Crossing, then north along the Silver Trail Highway (Yukon Highway 11), followed by a 30-minute flight from Mayo to the Project site. Alternatively, the Project can be accessed directly by helicopter from Whitehorse.

The property is underlain by a geologically coherent porphyry-style vein-stockwork and sheeted-vein wolframite system hosted within the metasedimen