Overview Operating Review continued Table 3 – Bramaderos porphyry exploration target Exploration Target Min Tonnage (MT) Max Tonnage (MT) Metal Content Min kAuEq2,4 ounces Metal Content Max kAuEq2,4 ounces Metal Content Min Moz AuEq2,4 Metal Content Max Moz AuEq2,4 New Copete-Porotillo (Po)2 135 180 1,700 3,500 1.70 3.50 Updated Brama-Alba-Melonal-Limon (Po)2 180 325 2,400 7,700 2.40 7.70 SUB-TOTAL PORPHYRY 315 505 4,100 11,200 4.10 11.20 Limon (Epithermal)3,4 30 44 900 1,700 0.90 1.70 BRAMADEROS PROJECT TOTAL 345 549 5,000 12,900 5.00 12.90 Exploration Target Min Tonnage (MT) Max Tonnage (MT) Min Grade Au (g/t) Min Grade Cu (%) Min Grade Ag (g/t) Min Grade AuEq (g/t)1,4 New Copete-Porotillo (Po) 135 180 0.25 0.10 – 0.40 Updated Brama-Alba-Melonal-Limon (Po) 180 325 0.26 0.10 – 0.41 SUB-TOTAL PORPHYRY 315 505 0.26 0.10 – 0.41 Limon (Epithermal) 30 44 0.80 – 12 0.90 BRAMADEROS PROJECT TOTAL 345 549 0.30 0.09 1.0 0.45 Exploration Target Min Tonnage (MT) Max Tonnage (MT) Max Grade Au (g/t) Max Grade Cu (%) Max Grade Ag (g/t) Max Grade AuEq (g/t)1,4 New Copete-Porotillo (Po) 135 180 0.40 0.12 – 0.60 Updated Brama-Alba-Melonal-Limon (Po) 180 325 0.54 0.12 – 0.74 SUB-TOTAL PORPHYRY 315 505 0.48 0.12 – 0.68 Limon (Epithermal) 30 44 1.10 – 15.8 1.20 BRAMADEROS PROJECT TOTAL 345 549 0.54 0.11 1.3 0.73 Table 4 – Limon epithermal gold exploration target Tonnage (Mt) Minimum Grade Maximum Grade Metal Content (AuEq Mozs) Exploration Target Min Max Au (g/t) Cu (%) Au Eq (g/t) Au (g/t) Cu (%) Au Eq (g/t) Min Max Central Shoot 20 31 0.8 12.0 0.9 1.1 15.8 1.2 580 1,200 Domain surrounding Central Shoot 5 7 0.8 12.0 0.9 1.1 15.8 1.2 145 270 Anomaly A 1.7 2 0.8 12.0 0.9 1.1 15.8 1.2 50 75 Anomaly B 1.7 2 0.8 12.0 0.9 1.1 15.8 1.2 50 75 Anomaly C 1.7 2 0.8 12.0 0.9 1.1 15.8 1.2 50 75 Total 30 44 0.9 1.2 875 1,700 Due to the effect of rounding, the total may not represent the sum of all components 18 Sunstone Metals Limited Annual Report 2026
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