Prismo Metals Reports Positive Results from Reconnaissance Mapping and Sampling at Silver King Project, Arizona

About this update from Prismo Metals Inc.

Results Suggestive of Productive Copper Porphyry System at Depth Vancouver, British Columbia – TheNewswire - May 12th, 2026 – Prismo Metals Inc. (the “Company or “Prismo”) (CSE: PRIZ) (OTCQB: PMOMF) is pleased to provide an update on recent reconnaissance geologic mapping and rock sampling at and around its Silver King project, located in the Pioneer Mining District near the town of Superior, Arizona. This reconnaissance program follows the successful completion of Phase 1 drilling at Silver King, consisting of eight holes totaling 1,272 metres. This drill campaign confirmed shallow silver mineralization associated with quartz / baryte veining in the upper historic mine levels, while a deep hole (SK-26-07, 488 meters) intersected at depth potassic alteration, disseminated pyrite and chalcopyrite in a porphyry-style intrusive at depth. This suggests potential vertical zoning with near-surface epithermal silver +/- copper, lead, gold and zinc veins superpositioned above potential porphyry copper mineralization, significantly enhancing the project’s exploration potential. Several undrilled vein targets need additional testing, and some deeper holes may be needed to fully explore growing evidence that a possible porphyry copper system lies adjacent or beneath Silver King; in “elephant country” just 3.4 km from the giant Resolution Copper deposit. Samples from all eight drill holes have now been submitted to an independent laboratory for full assay analysis. Assay results are anticipated to be announced once all results are received and analyzed, sometime in early June. The Silver King Mine occurs at the base of a regional unconformity where Paleozoic limestones, sediments, and intrusive rocks are exposed beneath the Tertiary Whitetail conglomerate and volcanic rocks exposing veins, quartz stockwork, hydrothermal breccias, skarn, and multiple Laramide intrusives beneath. Abundant historic workings scattered throughout the Paleozoic and older rocks suggest widespread mineralization that may be symptomatic of high-temperature porphyry-style alteration at depth. Highlights of the reconnaissance program: Completed 50% of the planned reconnaissance geologic mapping and sampling in late April 2026, progressing from Peachville Wash westward through Silverado Wash and inward toward the central Silver King shaft, including portions of Comstock Wash and the Crown zone (...

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