Mr. Brett Marsh reports

SPARTAN METALS DISCOVERS TWO NEW TUNGSTEN-SILVER VEINS AT TUNGSTONIA

Spartan Metals Corp. has discovery of two new tungsten-silver veins at its Tungstonia claims within its 100-per-cent-owned Eagle tungsten-silver-rubidium project in Nevada.

Highlights:

• Two new at surface quartz-huebnerite veins discovered by backpack core drill sampling approximately one kilometre away from Vein 1, which was the primary production vein at the past-producing Tungstonia mine;
• Tungsten-silver mineralization is identical to mineralization within veins 1 through 5 at the Tungstonia mine;
• Total of seven tungsten-silver veins now confirmed, including the new Spartan A and Spartan B veins.

Brett Marsh, Spartan's president and chief executive officer, stated: "The discovery of additional vein systems at the Tungstonia claims represents an encouraging development for our exploration team and continues to reinforce our belief that Eagle project could potentially host a larger mineralizing system. The presence of multiple vein structures across a broad area supports our geological model, confirms our rock-chip and soils data, and highlights the potential scale and expansion of the known mineralized footprint.

Mr. Marsh continued: "What is particularly exciting is that these newly identified tungsten-silver veins demonstrate that the mineralization extends beyond the areas historically recognized on the property. Additionally, based on these results and those from our previous programs, we are enthusiastic that silver, which wasn't report in historic production with the tungsten, continues to be consistent in our sampling because we believe it has the potential to add significant value to the project at current prices. As we continue our systematic exploration program, we will focus on understanding the extent, continuity and relationship of these veins and associated mineralization across the project area. We look forward to advancing our exploration efforts and evaluating the broader district-scale potential of the Eagle project."

The discoveries, part of the exploration program announced on May 21, 2026 , were confirmed utilizing a portable backpack diamond core drill with a 36.4-millimetre-diameter core. The backpack drill is intended to rapidly evaluate potential veins and proposed drill locations prior to mobilization of larger diamond core drills. The vertical holes (two backpack drill holes STS-26-004 and STS-26-005) were located near potential vein locations interpreted from Spartan's 2025 surface exploration programs and collared in greisen altered granite. True thicknesses/widths of mineralization are unknown as further definition is required to define the vein orientations.

The drill results validate the presence of previously interpreted but unconfirmed veins at the Tungstonia claims and illustrate the potential for continued district-scale discovery at the Eagle project. The assay results are consistent with previously reported production grades at the Tungstonia and Yellow Jacket mines of 0.6 to 0.9 per cent WO3 (tungsten trioxide) and 1.12 per cent WO3, respectively, which further illustrates the tungsten potential at the Eagle project.

Next steps

Spartan will continue to execute its 2026 exploration program as discussed in the May 21, 2026, announcement, including:

• Continued surface sampling of soils and rocks -- including continued backpack drilling -- over claims acquired in November, 2025, to potentially extend previously identified tungsten, silver and rubidium soil anomalies;
• Mid-June: ground geophysics surveys to inform depths of existing greater-than-two-kilometre tungsten-silver veins and potential tungsten skarn mineralization that is coincident with tungsten-silver-rubidium soil anomalies;
• Early to mid-August: approximately 3,000 metres of diamond core drilling at high-priority targets identified through surface sampling and geophysics surveys.

Quality assurance/quality control procedures

Samples were submitted to American Assay Lab (AAL) of Sparks, Nev., which is a certified and accredited laboratory, independent of the company. Samples are prepared using industry-standard prep methods and analyzed using method IM-4AB52 (52-element suite: 0.5-gram four-acid-plus-boric-acid hot block). AAL undertakes its own internal coarse and pulp duplicate analysis to ensure proper sample preparation and equipment calibration. Spartan's QA/QC includes regular insertion of CRM (certified reference material) standards, duplicates and blanks with a stringent review of results completed by the company's qualified person, Brett R. Marsh, president and chief executive officer of Spartan Metals.

Addition of investor marketing and media

Spartan has engaged Global One Media Group Pte. Ltd. to support the company's digital investor communications strategy. Global One Media is an investor marketing and digital communications firm that helps publicly traded companies increase market visibility, strengthen investor engagement and build sustained awareness across global capital markets. Through strategic positioning, premium content creation and targeted digital distribution across its investor media network, Global One Media connects issuers with key investor audiences across North America, Europe and Asia.

Under the engagement that commences on July 1, 2026, Global One Media will assist the company with the production of digital investor content, including video interviews and related corporate communications, and the distribution of such content through digital channels and media platforms, with the objective of increasing the company's visibility among investors across key global markets. The cost of the six-month agreement is $7,500 (U.S.) per month with an initial three-month retainer ($22,500 (U.S.)) paid in advance. Upon completion of the six-month term, the agreement shall transition to month to month unless otherwise agreed by both parties. The agreement with Global One Media is subject to TSX Venture Exchange approval.

Global One Media does not have any interest, directly or indirectly, in the company or its securities, or any right or intent to acquire such an interest. Global One Media may provide additional services to the company in the future.

Qualified person statement

The technical information contained in this news release has been prepared under the supervision of and approved by Brett R. Marsh, CPG. Mr. Marsh is president and chief executive officer of Spartan Metals and a qualified person as defined under National Instrument 43-101, Standards of Disclosure for Mineral Projects.

About the Eagle project

The Eagle project presents a unique opportunity to delineate one of the largest and highest-grade tungsten and rubidium districts in the United States. The project consists of the past-producing high-grade Tungstonia, Yellow Jacket and Rees/Antelope tungsten (tungsten/copper/silver) mines. Operations at these mines were from 1915 to 1942, with intermittent small-scale production occurring until 1956. Tungsten production from these mines totalled 8,379 units at grades between 0.6 per cent to 0.9 per cent WO3.

The project is approximately 36.5 square kilometres in size and located approximately 120 kilometres northeast of the town of Ely, in the Kern Mountains of White Pine county, Nevada. The project covers 9,033 acres consisting of 445 Bureau of Land Management (BLM) unpatented lode mining claims.

Three deposit types are present at Eagle (porphyry, skarn and carbonate replacement), which contain significant or anomalous grades of tungsten, silver and rubidium plus copper/antimony plus or minus gold/lead/zinc/bismuth/arsenic across three project focus areas that also include the potential to recover tungsten/rubidium/silver from the legacy Tungstonia mill tailings.

About Spartan Metals Corp.

Spartan Metals is focused on developing critical minerals projects in well-established and stable mining jurisdictions in the Western United States, with an emphasis on building a portfolio of diverse strategic defence minerals such as tungsten, rubidium, antimony, bismuth and arsenic.

Spartan's high-quality project portfolio includes an option to earn 100 per cent of the Victorio tungsten-molybdenum project in New Mexico and the 100-per-cent-owned Eagle tungsten-silver-rubidium project in Nevada. Victorio hosts the largest tungsten resource in the United States and contains significant concentrations of beryllium and fluorspar, while the Eagle project consists of the highest-grade historic tungsten resource in the United States, which includes significant underdefined resources consisting of high-grade silver, rubidium, antimony, bismuth, indium, as well as precious and base metals.

We seek Safe Harbor.