HALIFAX, NS / ACCESS Newswire / September 11, 2026 / Silver Tiger Metals Inc. (TSX:SLVR)(OTCQX:SLVTF) ("Silver Tiger" or the "Corporation") is pleased to announce exploration results for the 2026 Summer Program on the Northern Area of its 100% owned, silver-gold El Tigre Project located in Sonora, Mexico. In addition, this release details the confirmatory, high-grade assay results from the 2025 geotechnical drilling campaign from inside the El Tigre heap leach mine which is being built.

Northern Veins and Stockwork Zone Highlighted Intersections

New high-grade epithermal vein intersections of the Caleigh and Protectora Veins and the newly discovered Northern Stockwork Zone (identical to the El Tigre Stockwork Zone) are highlighted below:

• Drill hole ET-24-649: 2.1 metres grading 7,715.1 g/t silver equivalent or 102.87 g/t gold equivalent from 39.9 to 42.0 metres, consisting of 35.39 g/t gold and 5,061.1 g/t silver. This includes 0.53 metres grading 29,620.0 g/t silver equivalent or 394.93 g/t gold equivalent from 40.4 to 40.9 metres consisting of 136.20 g/t gold and 19,405.0 g/t silver. The hole shows the second highest assay result on the property and confirms the presence of high-grade on the Caleigh vein near-surface (Fig 1).
• Drill hole ET-24-643: 93 metres grading 70.1 g/t silver equivalent or 0.93 g/t gold equivalent from 16.9 to 109.9 metres, consisting of 0.38 g/t gold and 41.2 g/t silver. This includes 0.60 metres grading 2,292.2 g/t silver equivalent or 30.56 g/t gold equivalent from 44.2 to 44.8 metres consisting of 7.40 g/t gold and 1,737.0 g/t silver. The hole confirms the presence of both high-grade mineralization along the Protectora Vein and a large, near surface Stockwork Zone, similar to the heap leach project being built to the South (Fig 2).
• Drill hole ET-24-638: 15.5 metres grading 101.9 g/t silver equivalent or 1.36 g/t gold equivalent from 20.7 to 37.8 metres, consisting of 0.62 g/t gold and 55.2 g/t silver. This includes 0.65 metres grading 1,457.0 g/t silver equivalent or 19.4 g/t gold equivalent from 22.5 to 23.15 metres consisting of 10.40 g/t gold and 667 g/t silver. The hole confirms presence of Stockwork Zone inside the El Tigre formation approximately 1 km to the north of the heap leach mine that is being built to the south. In addition, this hole shows the presence of a high-grade hanging wall vein adjacent to the historical workings on the Protectora Vein in this area (Fig 3).

Glenn Jessome, President & CEO stated "Our focus remains on the construction of our heap leach mine at El Tigre with first pour to be in December, 2027. I am pleased to confirm we are on schedule for pouring that first doré bar. We are also pleased to announce excellent drill results for the high-grade Northern Veins, and the newly discovered Northern Stockwork Zone enveloping those veins, similar to the El Tigre heap leach mine we are currently building to the south."

Mr. Jessome further stated, "The Northern Veins, specifically the epithermal Caleigh and Protectora Veins, are the faulted extensions of the well-defined UG PEA Southern Veins, with similar mineralogy, structure and rock type. These veins are only 700 metre north of where we are currently building our heap leach mine. The Northern Veins are open along strike and down dip in all directions."

Mr. Jessome added, "Recent results also highlight the presence of outcropping Stockwork Zone, extending the current exploration corridor as we continue to add both underground and stockwork heap leach targets to the corporation's portfolio on this district-scale property."

Figure 1 : Cross Section 6660 - Caleigh, Protectora and Stockwork Drilling

Figure 2: Cross Section 6675 - Protectora and Stockwork Drilling

Figure 3 : Cross Section 6650 - Protectora and Stockwork Drilling

Overview - Northern Veins

The Northern Veins are the faulted extension of the Underground PEA Southern Veins (e.g., Sooy, El Tigre, and SK veins) exhibiting the same mineralogy, structure, host lithology including the El Tigre formation the host of the Stockwork Zone which the corporation is currently developing.

The Northern Veins consist of several historically mined veins including the Protectora, Fundadora, and Aguila (Figure 4); and many newly discovered veins including Benjamin, the Benjamin Shale and Caleigh (see Press Releases dated Sept 10, 2020, Nov 17, 2020, Jan 21, 2021, Feb 2, 2021).

Figure 4 : Plan View - El Tigre Exploration Prospects Overview

Table 1: Exploration Drilling 2026 - Intercepts in Northern Veins