Announcement • Aug 11

Cascadia Minerals Ltd. Expands Mineralization At the Carmacks Project with 52.84 M of 1.04% Cu and 0.37 G/T Au (1.45% Cueq)

Cascadia Minerals Ltd. announced the results of six additional drill holes from its fully-funded 2026 exploration program at the road-accessible Carmacks copper-gold project in central Yukon. These results continue to expand mineralization at Carmacks beyond the boundaries of the existing Mineral Resource. Hole CD-26-050 at Zone 2000S returned 52.84 m of 1.04% copper with 0.37 g/t gold (1.45% CuEq), including 11.68 m of 2.59% copper with 0.98 g/t gold (3.65% CuEq). Hole CD-26-047 at Zone 147 returned 93.22 m of 0.79% copper with 0.23 g/t gold (1.03% CuEq), including 17.65 m of 2.36% copper with 0.79 g/t gold (3.09% CuEq). Hole CD-26-048 at Zone 2000S returned 91.00 m of 0.69% copper with 0.24 g/t gold (0.95% CuEq), including 38.94 m of 0.84% copper with 0.33 g/t gold (1.15% CuEq). Drilling has continued to step-out north of Zone 200S, towards Zone 147, encountering sulphide mineralization over 250 m beyond the Mineral Resource at the 2000S Zone, with results pending for five additional step-out holes. A total of 20 holes comprising 10,651 m have been completed out of a planned 15,000 m of drilling. Work to-date has been focused at the 147 and 2000S zones, with prioritization of holes testing the extension of Zone 2000S north towards Zone 147. Drilling in this area has now encountered sulphide mineralization 250 m north of the existing Mineral Resource at the 2000S Zone, within 350 m of the southern extent of sulphide mineralization drilled in Zone 147. Drilling suggests that the previously interpreted Gap Zone is a separate smaller raft of mineralization that lies west of the main trend between Zone 2000S and Zone 147. This opens up opportunity to test the extension of Zone 2000S along the 600 m gap between the sulphide resources at 2000S and 147. Results from the first five drill holes of 2026 were released on July 7, 2026. This release comprises a further six drill holes. Assays from the remaining holes are pending and will be released once they are received and compiled. Drilling continues at the northern extension of Zone 2000S and is planned to commence this week at Zone 14. Table 1: New Carmacks Drilling Results (August 10, 2026): Drill Hole CD-26-045 at Zone 2000S returned 47.95 m of 0.43% copper, 0.16 g/t gold, 1.9 g/t silver, 55 ppm molybdenum, 0.60% CuEq, including 14.15 m of 0.87% copper, 0.36 g/t gold, 4.2 g/t silver, 125 ppm molybdenum, 1.24% CuEq. Drill Hole CD-26-048 at Zone 2000S returned 91.00 m of 0.69% copper, 0.24 g/t gold, 2.6 g/t silver, 120 ppm molybdenum, 0.95% CuEq, including 38.94 m of 0.84% copper, 0.33 g/t gold, 3.3 g/t silver, 95 ppm molybdenum, 1.15% CuEq. Drill Hole CD-26-050 at Zone 2000S returned 52.84 m of 1.04% copper, 0.37 g/t gold, 4.9 g/t silver, 196 ppm molybdenum, 1.45% CuEq, including 11.68 m of 2.59% copper, 0.98 g/t gold, 13.9 g/t silver, 387 ppm molybdenum, 3.65% CuEq. Drill Hole CD-26-047 at Zone 147 returned 93.22 m of 0.79% copper, 0.23 g/t gold, 2.4 g/t silver, 94 ppm molybdenum, 1.03% CuEq, including 74.67 m of 0.94% copper, 0.29 g/t gold, 2.7 g/t silver, 108 ppm molybdenum, 1.24% CuEq, including 17.65 m of 2.36% copper, 0.79 g/t gold, 5.1 g/t silver, 149 ppm molybdenum, 3.09% CuEq. Drill Hole CD-26-049 at Zone 147 returned 74.15 m of 0.43% copper, 0.12 g/t gold, 1.7 g/t silver, 60 ppm molybdenum, 0.56% CuEq. Drill Hole CD-26-051 at Sourtoe Target returned no significant results. The reported intervals are drilled thicknesses. True widths are estimated to be 60-70%. Copper equivalent calculations use metal prices of USD 4.00/lb for copper, USD 2,500/oz for gold, USD 30/oz for silver and USD 20/lb for molybdenum. Recovery factors of 82% for copper, 70% for gold, 69% for silver and 70% for molybdenum were used, based on recovery projections from the 2023 PEA study. Drilling at Zone 2000S has focused on extending the zone beyond historical drilling both at depth and to the north, towards Zone 147. Historical work defined a strike length of 300 m at Zone 2000S but interpreted a truncation of mineralization at the northern extent of previous drilling, and the edge of the modelled 2022 Resource Estimate. Drilling in 2026 has demonstrated that this area remains open, with Zone 2000S continuing along strike approximately 250 m towards Zone 147. Hole CD-26-045 was drilled up-dip of previously reported hole CD-26-046 and intersected 47.95 m of 0.43% copper with 0.16 g/t gold (0.60% copper equivalent), including 14.15 m of 0.87% copper with 0.36 g/t gold (1.24% copper equivalent). Further up-dip of this hole is a short historical hole which did not encounter mineralization and was thought to demonstrate the truncation of this zone to the north. Based on 2026 drilling it now seems that while the surface expression of the zone may be limited in this area, it is mineralized and continuous at depth, potentially increasing in tenor at depth. Hole CD-26-048 was drilled below historical hole CRM21-022 and successfully extended mineralization deeper in this portion of Zone 2000S, returning 91.00 m of 0.69% copper with 0.24 g/t gold (0.95% copper equivalent), including 38.94 m of 0.84% copper with 0.33 g/t gold (1.15% copper equivalent). Hole CD-26-054 was drilled underneath this hole to test a further extension at depth and encountered mineralization at the deepest point ever tested in this zone, for a total vertical extent of 467 m from surface. Results are pending for hole 054. Hole CD-26-050 stepped out approximately 70 m north from hole 048 and returned a strongly mineralized interval of 52.84 m of 1.04% copper with 0.37 g/t gold (1.45% copper equivalent), including 11.68 m of 2.59% copper with 0.98 g/t gold (3.65% copper equivalent). This represents the furthest north that mineralization has been confirmed by assays in Zone 2000S and lies approximately 111 m north of the historical drilling which defined the end of the existing Mineral resource. Hole CD-26-056 was drilled up-dip and further north of hole 050 and encountered a mineralized raft, with results pending. Holes CD-26-057 through 060 were drilled at Zone 2000s, continuing to test to the north, with 060 encountering mineralization over 250 m beyond the historical drilling comprising the Mineral Resource in Zone 2000S. Results for these holes are pending. Hole CD-26-047 was drilled in the deep central portion of Zone 147, in an area where the only historical drilling was a single down-dip hole. This hole tested a better cut across the mineralized zone and returned 93.22 m of 0.79% copper with 0.23 g/t gold (1.03% copper equivalent) at a vertical extent of 370 m from surface. Hole CD-26-052 was drilled below this hole and encountered mineralization at the deepest point tested in Zone 147, with results pending. Hole CD-26-049 was drilled further to the north in Zone 147, testing below previously reported hole CD-26-044. It returned a moderately mineralized interval of 74.15 m of 0.43% copper with 0.12 g/t gold (0.56% copper equivalent).

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