Algo Grande Discovers Three New Skarn Horizons, Reports 36.00 Metres Above 1.0% Copper, Including 14.79 Metres of 1.4% Copper and Identifies Evidence for Porphyry Potential at Depth

Executive Summary

• Initial results from hole AG_GC_002 intersected 41.59 m of mineralized skarn across five horizons, including three previously unrecognized skarn horizons, materially expanding the vertical extent of the Cerro Grande Cu‑Au‑Ag system.
• Highest‐grade intercept: 1.85 m @ 4.1 % Cu, 11 g/t Au, 150 g/t Ag within the deepest horizon.
• Assays also show molybdenum up to 2,820 ppm in intrusive phases, suggesting a deeper porphyry source and additional exploration upside.

Key Details

• Hole AG_GC_002 (collared at 739,086 E / 2,961,834 N; depth 600 m; azimuth 250°, dip –50°) drilled 23‑Nov‑2025 to 20‑Jan‑2026. Core recovery >95 %.
• Cumulative skarn mineralization: 41.59 m total; breakdown:
• 14.79 m @ 1.4 % Cu, 0.5 g/t Au, 20 g/t Ag (Upper Horizon 1)
• 9.55 m @ 1.4 % Cu, 0.4 g/t Au, 41.8 g/t Ag (New Horizon 3)
• 3.85 m @ 1.1 % Cu, 0.5 g/t Au, 50.3 g/t Ag (New Horizon 4)
• 7.83 m @ 1.3 % Cu, 0.4 g/t Au, 48.6 g/t Ag (New Horizon 5) – includes 1.85 m @ 4.1 % Cu, 11 g/t Au, 150 g/t Ag
• Broader mineralized envelope: 70.6 m above 0.6 % Cu when including surrounding wall‑rock mineralization.
• Porphyry evidence: Intrusive dikes (328.57–339.10 m) with Mo up to 2,820 ppm, propylitic & potassic alteration – consistent with a deeper porphyry source.
• Other drill holes:
• AG_GC_001: trace Cu in granodiorite, no comparable skarn.
• AG_GC_003: deviated but intersected depth skarn, confirming model.
• AG_GC_004: ongoing, geological logging shows skarn intercepts.
• Assay status: Lower 150 m of AG_GC_002 pending; results to be released after verification.
• QA/QC: Samples processed at ALS Laboratories (CRU‑31, SPL‑31, PUL‑31); multi‑element ICP‑MS/AES methods with blanks, standards, duplicates; all within acceptable limits.
• Qualified Person: João Rocha, EurGeol, VP Exploration, reviewed and approved technical data per NI 43‑101.

Notable Quotes

“The results reinforce our conviction in the Adelita Project and strongly support continued deep and step‑out drilling… The identification of three new skarn horizons materially expands the scale potential of Cerro Grande.” – Enrico Gay, CEO

“These results provide a strong geological foundation to advance the next phase of work at Cerro Grande. Planned surface soil geochemistry, detailed magnetic surveying, and high‑resolution LiDAR will be used to refine the skarn corridor…” – João Rocha, VP Exploration