METALLIS REPORTS STRONG PROGRESS FROM MID-SEASON DRILLING AT GREYHOUND, IDAHO

Executive Summary

• Metallis Resources reports completion of seven drill holes (1,143 m) on its 2025 diamond drilling program at the Greyhound Property in Idaho, with additional drilling planned at the Birdie target.
• Significant high‑grade silver‑gold‑antimony mineralization was intersected across the 1350' and Bulldog targets, including multiple shear zones up to 25 m thick.
• Historic trench and adit samples from the Birdie area returned exceptionally high grades (up to 4,900 g/t Ag and 67 g/t AuEq*), underscoring the gold‑rich potential of that target.

Key Details

• Overall Program Progress: 7 holes completed, total depth 1,143 m; drilling now moving to final Birdie target (≈500 m planned).
• 1350' Target:
• 3 holes, 659.8 m from a single pad intersected sulphide‑rich shear zones 7–25 m thick.
• Historical channel sampling over 36.9 m returned 1.85 g/t Au and 785 g/t Ag (10.6 g/t AuEq*).
• Mineralized zone traced >100 m vertically and 70 m horizontally.
• Bulldog Target:
• 4 holes, 483.6 m from two pads intersected semi‑massive sulphide zones within a 12 m wide shear zone.
• Surface samples previously showed up to 4.9 % Sb and 3,360 g/t Ag.
• Drilling confirmed east‑dipping structures and post‑mineral dykes (holes GH25-01, GH25-04).
• Birdie Target (Planned):
• Four holes (~500 m) to be drilled from two pads (Upper Birdie and Lower Birdie).
• Historic trench cuts yielded up to 4,900 g/t Ag; a quartz‑sulphide vein sample returned 18.15 g/t Au.
• Antimony Significance: Antimony contributes ~20 % of the in‑situ value at Greyhound and is highlighted as a critical mineral amid recent supply disruptions.
• Qualified Person: David Dupre, P.Geo., VP Exploration, reviewed and approved all technical information per NI 43‑101.

Notable Quotes

“This year’s drill program has delivered consistently encouraging results… We are highly encouraged by what we have seen so far and are excited to be just starting exploration on the exciting Greyhound Property.” – Dave Dupre, VP of Exploration

Materiality Assessment: Non‑Material – Positive (operational update with encouraging drilling results but no immediate financial impact).