BP Silver Corp. reports that the first batch of assays from the 2026 sampling program returned significant silver, gold, zinc and/or lead mineralization from newly identified targets at its 100%-owned Cosuño Silver Project in Bolivia. The
Company believes the strong continuity of surface mineralization as confirmed by these initial samples supports the exploration potential of these new targets. The Company also announces that a second diamond drill rig has been mobilized to accelerate its ongoing 2,000 meter (“m”) Phase 2 drill program.

Highlights

• Widespread silver, lead, and zinc mineralization occur across the newly identified target areas within the Jalsuri Target Cluster
• 85% of linear chip channel samples were mineralized, returning anomalous precious and base-metal values.
• Results range from 10 to 935 g/t silver, <0.005 to 1.51 g/t gold, 0.10% to 5.65% zinc, and 0.10% to 3.16% lead, defining a near-surface silver-gold-zinc target at Jalsuri North and a silver-lead-zinc target at Jalsuri Northeast.
• Higher gold values found at Jalsuri North, with the highest sample reporting 1.51 g/t gold collected from a historic mine dump that also contained >10 oz silver.
• Second drill rig mobilized on site to expedite Phase 2 drilling.

Dr. Stewart D. Redwood, Director and Qualified Person, commented, “The surface sampling has returned impressive grades of silver, lead and zinc across most of the sampled structures. These are meaningful grades for surface sampling and demonstrate continuous mineralization over an aggregate strike length of approximately 2,100 m at the newly identified Jalsuri targets. The results indicate that mineralization occurs at surface, highlighting the potential for shallow open
pit mineralization while also supporting the possibility of higher-grade vein systems at depth. The Phase 2 drill program is designed to test the shallow mineralization, and drill holes may be extended beyond their planned depths where significant mineralization is encountered. We also believe these structures extend to depths of several hundred meters into the underlying basement rocks, where they may develop into higher-grade veins similar to those at the neighboring Pulacayo silver mine.”

Tim Shearcroft, Founder and CEO, stated, “The key takeaway from these results is that silver mineralization is prevalent across all of the new areas sampled. The consistency of mineralization across these newly identified structures continues to demonstrate the scale of the opportunity at Cosuño. In addition to the widespread silver mineralization, these results also contain meaningful levels of zinc, lead and gold, which we believe will contribute significantly to future silver equivalent values as the project advances.”