Argenta Silver drills 1,026 g/t silver over 40 metres, including 18,467 g/t silver over 1.05 metres at El Quevar Project, Argentina

Argenta Silver Corp. [TSXV: AGAG; OTCQB: AGAGF; FSE: T1K] reported the second batch of assay results from its ongoing 2025 winter diamond drilling program at the 100%-owned El Quevar Project, Salta Province, Argentina. These results confirm the presence of multiple high-grade silver intervals within the Yaxtché Deposit, including an exceptionally high-grade intersection, with one sample returning 18,467 g/t Silver over 1.05 metres, surpassing the historic maximum from drill core samples at El Quevar.

Highlights: QVD-412 validates continuity with 1,026 g/t Ag over 40.00 metres, including 2,246 g/t Ag over 15.00 metres, which includes 4,423 g/t Ag over 6.00 metres, which also includes 18,467 g/t Ag over 1.05 metres.

QVD-413 delivered 414 g/t Ag over 14.35 metres, including 795 g/t Ag over 3.00 metres and 466 g/t Ag over 4.00 metres, expanding the up-dip potential for the existing resource.

QVD-411 was halted at 92 metres due to operational challenges. The target remains in the program and will be re-drilled after other priority areas are completed.

Joaquin Marias, CEO, President and Director of Argenta Silver, commented: “From a technical standpoint, the extraordinary tenor of the Yaxtch├⌐ mineralization highlights the strength and scale of the hydrothermal system that formed El Quevar. The success of the up-dip hole QVD-413, along with the project’s highest-ever assay, 18,467 g/t silver over 1.05 metres within a broader interval of 1,026 g/t silver over 40.00 metres in QVD-412, validates and reinforces our dual strategy: expanding the known resource while aggressively exploring the vast, untested areas of this high-grade system.”

Drilling kicked off in late May as part of a fully funded 4,000-metre winter campaign designed to confirm known high-grade zones, step out along strike, and test new targets. Assays from the first group of results were announced on July 21, 2025. The exploration program still on going and results for the remaining holes are expected by early and late September.

Of the three drill holes from the second batch of results with assays in hand: One infill hole (QVD-412), drilled in a gap of 60 meters with no previous drilling. This drillhole confirms the presence of mineralization on mentioned gap with similar grades as the surrounding drillholes, including one intercept that is an all-time record high for the project These results support infill drilling in upcoming programs for an area that could potentially increase the resource in the future.

One resource expansion hole (QVD-413), drilled up-dip from the existing resource. This drillhole confirms the extension of mineralization up dip from the existing resource in that area, encouraging the company to keep testing in future programs the up-dip section in between the deposit and surface.

One abandoned drillhole (QVD-411) due to operational challenges. This drillhole was halted at 92 metres, before reaching the proposed target. This target remains in the exploration plan and it will be redrilled once the other targets have been drilled.

Highlighted intercepts from QVD-412 and QVD-413: QVD-412 [infill drillhole] returned 1,026 g/t Ag over 40 metres; including three highlighted intervals of 532 g/t Ag over 7.00 metres which includes: 1,575 g/t Ag over 2.00 metres; 2,246 g/t Ag over15.00 metres which includes: 2,815 g/t Ag over 2.00 metres; 4,423 g/t Ag over 6 metres (including 1.05 metres with 18,467 g/t Ag); and 322 g/t Ag over 4.00 metres; 347 g/t Ag over 9.00 metres which includes: 519 g/t Ag over 3.00 metres.

QVD-413 [up-dip expansion drillhole]: 414 g/t Ag over 14.35 meters; including three highlighted intervals of 795 g/t Ag over3.00 metres; 466 g/t Ag over 4.00 metres and 399 g/t Ag over 3.00 metres. Estimated true widths vary between 60 to 85% of core reported length

The mineralization observed in these drillholes aligns closely with findings from the extensive relogging completed during Phase 1. Silver-bearing minerals occur both within the clasts and matrix of the breccia, and locally within sulfide-rich veinlets, features that are characteristic of a high-sulfidation epithermal system.

Alongside with previously disclosed drillholes from this program, results also confirm the high-grade, pure silver character of the mineralization and reinforce the need of systematic exploration outside of the existing resource (Yaxtche deposit) when less than 3% of the property has seen modern exploration.

Argenta has commenced drilling on the exploration targets (Atenea, Andrea, Argenta and Mani-Copan) located outside the main Yaxtché deposit. This represents a significant step forward, as many of these areas have never been drill-tested by previous operators. The exploration targets were selected during Phase 1 through a rigorous process, combining meticulous fieldwork with detailed geological interpretations of both historical and recent data.

The El Quevar Project is located in Salta, Argentina and spans an area of 57,000 hectares. The property remains underexplored with less than 3% of the area covered with comprehensive exploration work. The property boasts exceptional infrastructure with over 60 km of internal roads, a fully owned, fully operational camp for 100 workers with multiple support buildings, and a railroad, gas pipeline and service road just 3 km from camp, while a high-voltage transmission line lies approximately 20 km from the exploration area. The robust infrastructure associated with the project provides a cost-effective platform to de-risk and accelerate future drilling and development.

The foundational Mineral Resource Estimate of the Yaxtché deposit boasts an indicated mineral resource of 45.3 million ounces of silver from 2.93 million tonnes grading 482 g/t Ag, and an inferred resource of 4.1 million ounces from 0.31 million tonnes grading 417 g/t Ag. The mineral resource area remains open at depth and in multiple directions, particularly to the southeast and northwest. One of the objectives of the 2025 Winter Drilling Program is to specifically target and expand these high-grade Yaxtché zones.

Mineralization at the Yaxtché deposit is defined as a silver rich, high to intermediate-sulphidation epithermal system with associated gold. Mineralization is controlled by NW-SE and NE-SW fault structures and is mainly hosted in brecciated zones and dacite domes. Silver minerals at Yaxtché consist of complex silver sulphides, sulphosalts and native silver. These minerals are found within silicified breccias, commonly appearing as veinlets, stockworks, disseminations, and breccia fillings.