Announcement • Sep 04

AbraSilver Reports New Assay Results from Five Holes Completed At Cerro Viejo Target as Part of the Ongoing Phase Vi Exploration Drill Program At Its Wholly-Owned Diablillos Project in Argentina

AbraSilver Resource Corp. reported new assay results from five holes completed at the Cerro Viejo target as part of the ongoing Phase VI exploration drill program at its wholly-owned Diablillos project in Argentina. Cerro Viejo is located approximately 4 km north of the Oculto deposit, where surface channel sampling and earlier reconnaissance drilling identified gold mineralization associated with extensive east-west trending silicified structures extending for approximately 1.5 km. Initial reconnaissance drilling at Cerro Viejo conducted in 2024 returned 36.0 metres grading 1.91 g/t gold from a downhole depth of only 87 m in hole DDH 24-056, including 5.0 m grading 7.22 g/t gold. Follow-up drilling has now confirmed broad zones of shallow, oxide-hosted gold mineralization beginning close to surface, together with copper mineralization in sulphides at depth. These results further highlight the exploration potential of the Diablillos property beyond the Mineral Resources and Mineral Reserves that underpin the recently completed Definitive Feasibility Study. Highlight Drill Results: Widths are reported as drilled; true widths are not yet known. DDH 26-037: 27.0 m of 0.58 g/t gold and 4.6 g/t silver from a downhole depth of only 23 metres, within the oxide zone. DDH 26-043: 7.0 m of 0.53% copper from a downhole depth of 97 m, confirming sulphide copper mineralization beneath the gold-bearing oxide zone. DDH 26-047: 32.0 m of 0.29 g/t gold and 2.8 g/t silver from a downhole depth of only 9 m, followed by 14.0 m of 1.50 g/t gold and 6.2 g/t silver from 54 m, both within the oxide zone. DDH 26-048: 21.0 m grading 0.12 g/t gold and 0.10% copper from a downhole depth of 82 m, and 18.0 m grading 0.13 g/t gold and 0.06% copper from 212 m. Table 1 – Summary of Key Drill Intercepts: Drill Hole Area From (m) To (m) Type Interval (m) Ag (g/t) Au (g/t) Cu (%) DDH-26-037 Cerro Viejo 23.0 50.0 Oxides 27.0 4.6 0.58 - DDH-26-043 Cerro Viejo 97.0 104.0 Sulphides 7.0 - - 0.53 112.0 117.0 Sulphides 5.0 - - 0.15 187.0 190.0 Sulphides 3.0 12.5 0.17 0.57 DDH-26-046 Cerro Viejo 82.0 97.5 Sulphides 15.5 - - 0.10 DDH-26-047 Cerro Viejo 9.0 41.0 Oxides 32.0 2.8 0.29 - 54.0 68.0 Oxides 14.0 6.2 1.50 - DDH-26-048 Cerro Viejo 37.5 50.5 Sulphides 13.0 - - 0.10 81.5 102.5 Sulphides 21.0 1.9 0.12 0.10 212.0 230.0 Sulphides 18.0 1.5 0.13 0.06. All results in this news release are rounded. Assays are uncut & undiluted. Widths are drilled widths, not true widths. True widths are unknown. Cerro Viejo is one of several new exploration areas being systematically tested within the Diablillos property and is located approximately 4 km north of the Oculto deposit. Gold mineralization at Cerro Viejo is hosted within extensive, east-west trending silicified structures that have been traced at surface within a band approximately 0.5 kilometres wide over a strike length of approximately 1.5 kilometres. The mineralization occurs in an epithermal environment interpreted to represent the upper levels of a major porphyry system. Initial reconnaissance drilling at Cerro Viejo in 2024 intersected widespread gold mineralization, including 36.0 m grading 1.91 g/t gold from a downhole depth of only 87 m in hole DDH 24-056, with a higher-grade interval of 5.0 m grading 7.22 g/t gold. Surface chip and channel samples from the associated siliceous outcrops returned gold values including 16.36 g/t, 12.14 g/t, 3.2 g/t and 2.3 g/t gold. Together these results outlined a large zone with potential for shallow gold mineralization, which is the target of the current drill program. The mineralized structures occur within zones of silicification in granitoid rocks that host the underlying porphyry system. The gold-bearing silicification includes areas of vuggy silica and brecciation with alunite-jarosite alteration and appears to be steeply dipping. Oxidation in the area is shallow, and preliminary mineralogical work indicates that gold associated with sulphides (pyrite) largely occurs as fine native metal. Metallurgical testwork has not been completed on mineralization from Cerro Viejo. Cerro Viejo – Near-Surface Oxide Gold Zone (Holes DDH 26-037 and DDH 26-047): Holes DDH 26-037 and DDH 26-047 both intersected broad zones of gold mineralization within the oxide zone from close to surface, with mineralization in hole DDH 26-047 commencing at a downhole depth of only 9 m. Oxidation across the area tested to date is shallow, and the mineralization intersected in these holes is oxide-hosted throughout. Cerro Viejo – Copper Mineralization at Depth (Holes DDH 26-043 and DDH 26-048): Copper values in holes DDH 26-043 and DDH 26-048 occur within sulphides below the oxide zone and are interpreted to represent the deeper parts of steeply dipping mineralized structures. Hole DDH 26-048 is located approximately 500 m northeast of hole DDH 26-043, indicating that mineralization of this style is developed across a substantial area of the property. Phase VI Exploration Update: A total of approximately 12,000 m have been completed in 54 diamond drill holes under the Phase VI exploration program since it commenced in January 2026, of which approximately 1,000 m have been drilled at Cerro Viejo.

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