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

Hole ID	Area	Comment	From	To	Length (1)	Au g/t	Ag g/t	AuEq (1)	AgEq (1)
						g/t	g/t	g/t	g/t
ET-26-637	Protectora	Stockwork Zone	6.70	22.00	15.30	0.11	13.4	0.29	21.7
		Stockwork Zone	34.90	139.00	104.10	0.25	3.0	0.29	21.9
		Including	86.50	93.00	6.50	0.78	1.3	0.80	60.0
		Stockwork Zone	151.50	160.50	9.00	0.70	2.3	0.73	54.9
ET-26-638	Protectora	Stockwork Zone	2.50	13.50	11.00	0.33	2.5	0.36	27.2
		Stockwork Zone	20.65	37.80	15.50	0.62	55.2	1.36	101.9
		HW Protectora Vein	21.65	24.00	2.35	2.92	216.8	5.81	436.0
		OPEN VOID	30.50	32.15	1.65	*	*	*	*
		Stockwork Zone	43.00	49.50	6.50	0.12	6.1	0.21	15.4
ET-26-639	Protectora	Stockwork Zone	1.50	130.80	129.30	0.20	17.6	0.43	32.2
		Including	45.00	84.20	39.20	0.26	45.2	0.87	65.1
		Protectora Vein	48.10	54.70	6.60	0.62	213.1	3.46	259.4
		Including	54.00	54.70	0.70	1.61	825.0	12.61	945.6
ET-26-640	Protectora	Stockwork Zone	1.20	11.20	10.00	0.09	52.2	0.78	58.7
		Including	4.00	8.30	4.30	0.08	90.9	1.30	97.2
		OPEN VOID	11.20	15.00	3.80	*	*	*	*
ET-26-641	Protectora	Stockwork Zone	0.00	14.50	14.50	0.11	47.1	0.74	55.4
		OPEN VOID	16.50	18.40	1.90	*	*	*	*
		Stockwork Zone	51.00	80.15	29.15	0.27	8.3	0.38	28.4
		Including	63.00	68.00	5.00	0.49	13.3	0.67	50.1
ET-26-642	Protectora	Stockwork Zone	15.00	26.90	11.90	0.12	41.4	0.67	50.6
		including	15.00	16.00	1.00	0.51	240.0	3.71	278.5
		OPEN VOID	26.90	30.10	3.20	*	*	*	*
		Stockwork Zone	97.40	104.50	7.10	0.99	38.1	1.51	112.9
ET-26-643	Protectora	Stockwork Zone	16.90	109.90	93.00	0.38	41.2	0.93	70.1
		Protectora Vein	44.20	44.80	0.60	7.40	1,737.0	30.56	2,292.2
		Including	40.70	41.30	0.60	3.29	1,437.0	22.45	1,683.9
ET-26-644	Protectora	Stockwork Zone	8.00	63.00	55.00	0.37	18.7	0.62	46.1
		Including	17.70	25.70	8.00	0.15	84.1	1.28	95.6
		Protectora Vein	31.00	32.80	1.80	2.00	39.7	2.53	189.8
		and	61.80	63.00	1.20	2.42	26.5	2.78	208.2
ET-26-645	Protectora	Stockwork Zone	23.00	52.50	29.50	0.32	46.4	0.94	70.7
		including	26.00	50.50	24.50	0.35	53.1	1.06	79.3
		Protectora Vein	30.15	33.70	3.55	0.44	164.5	2.64	197.8
		including	30.15	30.65	0.50	1.81	821.0	12.75	956.4
ET-26-646	Caleigh	Stockwork Zone	0.00	27.60	27.60	0.24	44.2	0.83	62.5
		Caleigh Vein	19.00	21.00	2.00	1.92	409.7	7.38	553.8
		including	19.50	20.10	0.60	6.34	1,183.0	22.11	1,658.2
		Stockwork Zone	33.80	38.00	4.20	0.03	23.1	0.34	25.5
		Stockwork Zone	59.00	162.00	103.00	0.23	10.9	0.37	27.8
		including	80.50	81.50	1.00	0.49	425.0	6.16	462.1
ET-26-647	Caleigh	Stockwork Zone	0.00	18.00	18.00	0.17	8.0	0.27	20.4
		Caleigh Vein	23.60	32.40	8.80	1.02	241.4	4.24	318.0
		including	26.55	27.10	0.55	15.80	3,296.0	59.75	4,481.0
		Stockwork Zone	72.90	94.50	21.60	0.14	2.8	0.18	13.5
		Stockwork Zone	106.15	140.20	34.05	0.26	2.0	0.29	21.6
		including	125.60	128.50	2.90	1.32	2.0	1.35	101.3
ET-26-648	Caleigh	Stockwork Zone	0.00	12.00	12.00	0.09	5.1	0.16	11.8
		Stockwork Zone	19.00	39.00	20.00	0.08	9.2	0.21	15.6
		Caleigh Vein	73.25	77.40	4.15	0.31	35.7	0.78	58.8
		including	73.85	74.90	1.05	0.96	121.8	2.59	194.1
		Stockwork Zone	98.50	101.50	3.00	0.47	39.5	0.99	74.5
		including	98.50	99.50	1.00	1.18	104.4	2.57	193.1
		Stockwork Zone	109.00	125.00	16.00	0.21	1.6	0.23	17.4
		including	114.15	119.45	5.30	0.37	2.5	0.40	30.4
ET-26-649	Caleigh	Stockwork Zone	24.00	28.60	4.60	0.46	4.0	0.51	38.4
		Caleigh Vein	39.90	42.00	2.10	35.39	5,061.1	102.87	7,715.1
		including	40.40	40.93	0.53	136.20	19,405.0	394.93	29,620.0
		Stockwork Zone	48.00	63.00	15.00	0.21	26.7	0.56	42.2
		including	55.70	62.30	6.60	0.32	53.9	1.03	77.6
		Stockwork Zone	68.60	76.50	7.90	0.24	3.8	0.29	21.5
		Stockwork Zone	94.80	102.80	8.00	0.21	21.6	0.50	37.4
		Protectora Vein	131.10	131.65	0.55	2.39	18.9	2.64	198.2
		Stockwork Zone	147.00	184.00	37.00	0.30	3.0	0.34	25.7
		including	166.50	180.22	13.72	0.58	1.7	0.60	45.3
ET-26-650	Caleigh	Caleigh Vein	73.18	75.10	1.92	0.93	230.1	4.00	300.0
		including	73.18	73.80	0.62	2.54	658.0	11.31	848.3

Notes: 1. Not true width.; 2. Silver Equivalent ("AgEq") ratios are based on a silver to gold price ratio of 75:1 (Au:Ag);

2026 Exploration Work- Overview

Drilling has thus far has been focused on both the Protectora Vein, the largest and most developed of the northern vein set, and the Caleigh Vein. Historically mined by the North Tigre Mining Company some 700m from existing Resource, the Protectora Vein is drilled 1km along strike and from its position, geometry and geology it can be considered the north extension of the Sooy Vein (Figure 4).

Drilling results received are centered around the 50m long working "Escalera Working", a part of the North ET Mine, with high grade underground sampling along the Protectora Vein. Drilling results are also focused on the Caleigh vein, immediately adjacent to the Protectora, unmined and near surface. Based on these results further drilling will take place to infill this area of northern Resource.

Figure 5: Plan View - Northern Veins Exploration Drilling

2025 Exploration Work - Overview

In preparation for the 2026 drilling season the Corporation had:

Exploration crews located, cataloged, mapped and sampled historic adits in the Northern Area. Once sampling completed, nearly every working was LiDAR scanned.

This mapping is centered around the old workings of the North El Tigre mine and associated adits. This work is aimed at establishing a geological context for these mineralized systems, and to assess how related these are to the well-established El Tigre, Sietz-Kelly and Sooy Veins.

Historic Anaconda (1980s era), El Tigre Silver (2010-12) and modern day drillholes (2016 to present) were relogged with an increased geological understanding developed in the established Southern Veins, host of the El Tigre Mine reported to have produced a total of 353,000 ounces of gold and 67.4 million ounces of silver from 1.87 million tons.

Resampling was conducted were needed on areas proximal to vein mineralization, the shale unit that is host to the Shale Zone to south, and El Tigre formation, host to the Stockwork mineralization seen in South. In total over 400 samples from drill core were taken.

70% of the northern vein prospect area has been mapped by Corporation geologists

Geotechnical Drilling 2026

Geotechnical drilling for the final design of Pit through WSP Mexico has concluded with final report received. Sampling was conducted on mineralized intervals where possible (drilling targeted pit walls) with intervals presented in Table 2.

Drill results from inside the proposed pit continue to show both continuity and grade. Furthermore, El Tigre vein intersections show high-grade material near-surface and un-mined, including 1.0 metre grading 1,137.5 g/t silver equivalent or 15.17 g/t gold equivalent from 20.5 to 21.5 metres consisting of 15.10 g/t gold and 5 g/t silver.

Summary High-Grade Mineralized Zones at El Tigre

While mineralized zones in the North Area are predominantly Vein-type with the exception of the Benjamin Shale Zone, there is significant potential for Sulfide and Shale-type mineralization (see Figure 6). These South Area prospective zones are enumerated below:

1. Veins - The high-grade epithermal veins dip steeply to the west, and are typically 0.5 m wide, and locally can be up to 5 m in width. Several exist on the property, with many reaching strike length of 3 kilometers or more. Vein mineralization consists of quartz and varying proportions of zinc, iron, lead, copper, and silver sulfides. These historically mined Veins have, for example Drill Hole ET-21-264, returned assays up to 82,827.3 g/t silver equivalent over 0.5 meters proximal to historically mining stopes, showing high-grade Vein mineralization continues at depth and along strike (see press release dated Nov 9, 2021).
2. Sulfide Zone - Hosted at the contact between a basement granite and younger volcanics, the currently defined Sulfide Zone is 750 meter along strike with 250 meters along dip and typically 2-20 meters thick. Mineralization consists of varying semi-massive proportions of zinc, iron, lead, copper, and silver sulfides with, for example, Drill Hole 434 grading 10.5 meters at 1,642.4 g/t total silver equivalent consisting of 914.0 g/t silver, 0.20 g/t gold, 1.68% copper, 5.92% lead and 12.42% zinc (see press release dated January 25, 2023).
3. Shale Zone - Occurring at the intersection of Veins and a property-wide carbonate/shale layer, this silver and base metal-rich mineralization extends 20 meters in either direction from the vein, with thicknesses reaching upwards of 15 meters, and several kilometers along strike. Grades and widths are significant with, for example, Drill Hole 329 grading 9.1 meters at 809.7 g/t silver equivalent consisting of 429.5 g/t silver, 0.22 g/t gold, 0.22% copper, 4.82% lead and 6.89% zinc (see press release dated May 17, 2022).

Figure 6: El Tigre-Conceptual Cross

Table 2: Geotech Drilling 2026 - Significant Intercepts

Hole ID	Area	Comment	From	To	Length (1)	Au g/t	Ag g/t	AuEq (1)	AgEq (1)
						g/t	g/t	g/t	g/t
ET-26-629	Heap Leach	Geotech outside Resource
ET-26-630	Heap Leach	Stockwork Zone	79.28	95.47	16.19	0.76	12.4	0.92	69.3
		Including	87.00	92.00	5.00	1.99	28.4	2.37	177.5
		Stockwork Zone	102.50	120.00	17.50	0.20	10.2	0.34	25.6
ET-26-631	Heap Leach	Stockwork Zone	78.00	85.80	6.70	0.22	12.7	0.38	28.9
		OPEN VOID	84.40	85.50	1.10	*	*	*	*
ET-26-632	Heap Leach	Stockwork Zone	13.50	30.20	16.70	2.12	4.4	2.18	163.5
		El Tigre Vein	20.50	21.50	1.00	15.10	5.0	15.17	1,137.5
		Stockwork Zone	40.30	63.13	22.83	0.49	15.0	0.69	51.8
		Including	43.30	47.30	4.00	1.23	65.9	2.10	157.8
ET-26-633	Heap Leach	El Tigre Fm Stockwork	4.50	34.00	29.50	1.16	91.3	2.00	178.2
		Including	9.80	12.90	3.10	9.35	438.1	11.75	1,139.1
		El Tigre Vein	11.80	12.90	1.10	19.00	694.0	19.25	2,119.0
		El Tigre Fm Stockwork	62.00	93.25	31.25	0.31	2.2	0.34	25.3
		El Tigre Fm Stockwork	109.00	116.00	7.00	0.36	0.7	0.37	28.0
ET-26-634	Heap Leach	Geotech outside Resource
ET-26-635	Heap Leach	El Tigre Fm Stockwork	4.30	14.63	10.33	0.61	3.3	0.66	49.2
		Including	9.15	10.50	1.35	2.41	0.5	2.41	181.0
		and	46.00	50.51	4.51	0.20	4.3	0.25	19.0
ET-26-636	Heap Leach	El Tigre Fm Stockwork	7.50	35.70	28.20	0.17	9.0	0.29	22.1
		Including	12.90	13.40	0.50	1.24	92.1	2.46	184.7

Table 3: Drillhole Locations - Northern Veins and Geotech

Hole ID	Type	Easting	Northing	Elevation	Azimuth	Dip	Length
ET-26-629	Geotechnical	671,092	3,384,367	2,003	310	-70	130.6
ET-26-630	Geotechnical	671,167	3,384,385	2,030	35	-55	150.0
ET-26-631	Geotechnical	671,070	3,384,610	2,088	45	-50	87.0
ET-26-632	Geotechnical	671,170	3,383,824	1,914	250	-65	130.5
ET-26-633	Geotechnical	671,258	3,383,772	1,971	90	-50	120.0
ET-26-634	Geotechnical	671,291	3,383,497	2,037	90	-65	231.0
ET-26-635	Geotechnical	671,287	3,383,339	1,944	290	-60	99.4
ET-26-636	Geotechnical	670,820	3,386,605	2,077	90	-40	75.0
ET-26-637	Exploration	670,820	3,386,605	2,077	90	-65	175.0
ET-26-638	Exploration	670,812	3,386,645	2,055	90	-50	75.0
ET-26-639	Exploration	670,812	3,386,645	2,055	90	-70	150.0
ET-26-640	Exploration	670,830	3,386,673	2,031	90	-40	15.0
ET-26-641	Exploration	670,830	3,386,673	2,031	90	-50	84.0
ET-26-642	Exploration	670,830	3,386,673	2,031	90	-70	105.0
ET-26-643	Exploration	670,830	3,386,673	2,031	90	-80	133.5
ET-26-644	Exploration	670,826	3,386,700	2,013	90	-40	75.0
ET-26-645	Exploration	670,820	3,386,702	2,009	90	-70	126.0
ET-26-646	Exploration	670,736	3,386,663	2,011	90	-40	166.0
ET-26-647	Exploration	670,736	3,386,663	2,011	90	-60	231.0
ET-26-648	Exploration	670,736	3,386,663	2,011	90	-85	125.0
ET-26-649	Exploration	670,702	3,386,623	2,006	90	-45	200.0
ET-26-650	Exploration	670,701	3,386,623	2,006	90	-60	246.0

About Silver Tiger Metals Inc.

Silver Tiger is constructing the El Tigre Stockwork Zone Project, a silver and gold heap leach project located in Sonora, Mexico. The project is 100% owned by Silver Tiger and covers over 37,000 hectares. The Technical Report entitled Stockwork Zone Pre-Feasibility Study and Underground Preliminary Economic Assessment of the El Tigre Silver-Gold Project Sonora, Mexico dated June 20, 2025 is available on SEDAR and under the Corporation's profile as well as on the Silver Tiger website at www.silvertigermetals.com.

Silver Tiger has entered into an Engineering Procurement and Construction Management Contract ("EPCM") with Kappes, Cassidy & Associates ("KCA") and Kappes, Cassiday del Norte S de RL de CV ("KCN") to assist in the construction of the mine and process plant at El Tigre. The Company has also now hired its own experienced mine construction executive team to work with KCA and KCN.

Commissioning and first pour are targeted for December, 2027. The Board of Directors of the Company have approved the construction decision for El Tigre.

VRIFY Slide Deck and 3D Presentation - Silver Tiger's El Tigre Project

VRIFY is a platform being used by companies to communicate with investors using 360° virtual tours of remote mining assets, 3D models and interactive presentations. VRIFY can be accessed by website and with the VRIFY iOS and Android apps.

Access the Silver Tiger Metals Inc. Company Profile on VRIFY at: https://vrify.com.

The VRIFY Slide Deck and 3D Presentation for Silver Tiger Metals Inc. can be viewed on the Corporation's website at: www.silvertigermetals.com.

Procedure, Quality Assurance / Quality Control and Data Verification

The diamond drill core (HQ size) is geologically logged, photographed and marked for sampling. When the sample lengths are determined, the full core is sawn with a diamond blade core saw with one half of the core being bagged and tagged for assay. The remaining half portion is returned to the core trays for storage and/or for metallurgical test work.

The sealed and tagged sample bags are transported to the Bureau Veritas facility in Hermosillo, Mexico. Bureau Veritas crushes the samples (Code PRP70-250) and prepares 200-300 gram pulp samples with ninety percent passing Tyler 200 mesh (Code PUL85). The pulps are assayed for gold using a 30-gram charge by fire assay (Code FA430) and over limits greater than 10 grams per tonne are re-assayed using a gravimetric finish (Code FA530). Silver and multi-element analysis is completed using total digestion (Code MA200 Total Digestion ICP). Over limits greater than 100 grams per tonne silver are re-assayed using a gravimetric finish (Code FA530).

Quality assurance and quality control ("QA/QC") procedures monitor the chain-of-custody of the samples and includes the systematic insertion and monitoring of appropriate reference materials (certified standards, blanks and duplicates) into the sample strings. The results of the assaying of the QA/QC material included in each batch are tracked to ensure the integrity of the assay data. All results stated in this announcement have passed Silver Tiger's QA/QC protocols.

Qualified Person

Charles Spath, P. Geo., M.Sc, V.P. Technical Services of the Corporation, is the Qualified Person for Silver Tiger as defined under National Instrument 43-101. Mr. Spath has reviewed and approved the scientific and technical information in this press release.

For further information, please contact:

Devin Devarennes
VP Business Development & Investor Relations
902 233 3656
[email protected]

CAUTIONARY STATEMENT:

This news release may contain "forward-looking information" as defined in applicable Canadian securities legislation. All statements other than statements of historical fact, included in this release, including, without limitation, statements regarding the El Tigre Project, future operating margins, future production and processing, and future plans and objectives of Silver Tiger constitute forward looking information that involve various risks and uncertainties. Forward-looking information is based on a number of factors and assumptions which have been used to develop such information but which may prove to be incorrect, including, but not limited to, assumptions in connection with the continuance of Silver Tiger and its subsidiaries as a going concern, general economic and market conditions, mineral prices, the accuracy of mineral resource estimates, and the performance of the El Tigre Project. There can be no assurance that such information will prove to be accurate and actual results and future events could differ materially from those anticipated in such forward-looking information. Important factors that could cause actual results to differ materially from Silver Tiger expectations include exploration and development risks associated with the Silver Tiger projects, the failure to establish estimated mineral resources or mineral reserves, volatility of commodity prices, variations of recovery rates, and global economic conditions. For additional information with respect to risk factors applicable to Silver Tiger reference should be made to Silver Tiger continuous disclosure materials filed from time to time with securities regulators, including, but not limited to, Silver Tiger Annual Information Form. The forward-looking information contained in this release is made as of the date of this release.

SOURCE: Silver Tiger Metals Inc.

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