Silver Storm Demonstrates Resource Growth Potential at the C550 Zone, Expands the 2026 Drilling Campaign by 9,000 Metres

About this update from Silver Storm Mining Ltd.

TORONTO, ON / ACCESS Newswire / May 21, 2026 / Silver Storm Mining Ltd. ("Silver Storm" or the "Company") (TSXV:SVRS)(OTCQX:SVRSF)(FSE:SVR), is pleased to announce drill results from the diamond drilling program at the Company's 100%-owned La Parrilla Silver Mine Complex ("La Parrilla") located in Durango State, Mexico. Drill results in this release are from the C550 and C535 Zones within the past-producing Quebradillas mine. Key highlights include: C550 Zone C535 Zone Greg McKenzie, President and CEO, commented: "We are pleased with the infill and exploration drill results at the C550 Zone that demonstrated the potential to grow the La Parrilla Mineral Resource. At the C535 Zone, drilling returned high-grade intercepts that support our plan to conduct further exploration work in the near term. Given the success of the 2026 La Parrilla drill campaign to date, the initial 6,000 m campaign will be expanded with additional 9,000 m of drilling." C550 Zone The C550 Zone is comprised of quartz-carbonate vein mineralization within two parallel fault zones forming cymoid loops that strike east and dip 83 degrees to the south. The Zone has a known strike length of approximately 315 m and a thickness of up to 5.5 m, with mineralization extending vertically for 215 m. The mineralized structure pinches and swells, with replacement sulphide bodies developed at its footwall and hanging wall. Historical channel sampling conducted on the four levels mined at the C550 Zone indicated that the mineralization widths varied from 1.0 m to 2.4 m on average, with average grades between 182 g/t to 309 g/t Ag.Eq (Figure 1, Table 2). The following composited weighted average grades of historical channel samples(3) were calculated: Figure 1: Longitudinal section of the C550 Zone (view to the south) Table 1 summarizes the results from the 14 infill and exploration holes drilled at the C550 Zone. The drill results are consistent with the results from the historical channel samples. New zones of mineralization were encountered before reaching the C550 Zone in two of the holes. The infill and exploration results from the 14 holes drilled at the C550 Zone have demonstrated the potential to extend the Indicated Resources by additional 75 m along strike and 90 m at depth, while Inferred Resources could potentially be extended by additional 50 m a...

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