Mr. Jeremy Poirier reports

GRIT METALS IDENTIFIES NEW SPODUMENE-BOULDER TARGETS AND CONFIRMS HIGHLY FRACTIONATED PEGMATITE SYSTEM THROUGH RECENT DRILL PROGRAM AT CENTRAL FINLAND LITHIUM PROJECT

Grit Metals Corp. has released results from its continuing surface exploration and maiden diamond drilling program at the company's 100-per-cent-owned Central Finland lithium project.

Highlights:

• New spodumene-bearing boulder discoveries in previously untested areas of the Jylha target, including samples returning assays greater than Li2O (lithium oxide);
• Surface exploration has expanded the known distribution of high-grade spodumene mineralization at Jylha and generated new priority areas for bedrock source targeting;
• Maiden drilling intersected multiple geochemically evolved and highly fractionated pegmatite bodies, confirming a fertile lithium-cesium-tantalum (LCT) pegmatite system within the project area;
• Combined surface and drill results have materially advanced the company's exploration model and provide new geological and geochemical vectors for the next phase of targeting.

Boulder sampling results

During the recent field campaign, the company completed a focused surface boulder sampling program at Jylha. The team successfully identified new spodumene-bearing pegmatite boulders in previously untested areas of the permit, with multiple assays returning greater than 0.5 per cent Li2O, in addition to high-grade samples of 2.0 per cent and 2.4 per cent Li2O, respectively.

Of particular interest is a developing cluster of high-grade and anomalous lithium-bearing boulders east of the Morkyla area, further expanding the known distribution of spodumene mineralization at Jylha and providing a new priority area for follow-up exploration.

An additional anomalous cluster in the central part of the permit was also discovered, reinforcing the effectiveness of the company's systematic boulder prospecting strategy and ability to generate new targets across the broader permit package.

Readers are cautioned that the Leviakangas lithium deposit discussed above is an adjacent properties and that Grit Metals has no interest in or right to acquire any interest in the deposit, and that mineral deposits on adjacent or similar properties, and any production therefore or economics with respect thereto, are not in any way indicative of mineral deposits on Grit Metals' property or the potential production from, or cost or economics of, any future mining of any of Grit Metals' mineral properties.

Table 1 summarizes results of significant samples. A more extensive boulder sampling campaign is planned to further explore the entirety of the Grit licence package, and follow-up work programs will take place to advance these new targets.

Kyrola and Morkyla target drill results

Initial drilling successfully intersected multiple pegmatite bodies and confirmed the presence of a geochemically evolved and highly fractionated pegmatite system within the project area and at both drilling targets (see previous releases dated March 23, 2026, and May 27, 2026).

Geochemical results from the drill intersections demonstrate enrichment in key LCT pathfinder elements and fractionation indicators, including lithium, cesium, tantalum and beryllium, providing important confirmation of a fertile pegmatite-generating system and strengthening the company's geological and exploration model.

The company has incorporated these results into a proprietary geochemical targeting model used to vector toward potentially more evolved portions of the pegmatite system.

Kyrola

Drilling at Kyrola identified a muscovite-rich pegmatite horizon in holes KY26-012, KY26-017, KY26-018 and KY26-019. The geological character of these pegmatites is comparable with muscovite-rich pegmatites reported in close spatial association with modelled spodumene-bearing pegmatite lenses at Keliber's Rapasaari and Emmes deposits (source: for example, Keliber lithium project (Finland) technical report summary; SRK, 2023). Readers are cautioned that the Rapasaari and Emmes lithium deposits are adjacent properties and that Grit Metals has no interest in or right to acquire any interest in the deposit, and that mineral deposits on adjacent or similar properties, and any production therefore or economics with respect thereto, are not in any way indicative of mineral deposits on Grit Metals' property or the potential production from, or cost or economics of, any future mining of any of Grit Metals' mineral properties.

Additionally, drilling intersected multiple intervals of altered albite- and quartz-rich pegmatite, displaying textural similarities to pegmatites documented at the nearby historic Dragbacken lithium occurrence, located approximately 6.5 kilometres northwest of Kyrola and currently held by Arvo Metals. At Dragbacken, the central portions of the pegmatite have returned lithium assays exceeding 10,000 parts per million lithium (source: Battery mineral investigations in the Ostrobothnian Schist Belt, Western Finland, 2019 to 2022; GTK, 2024).

The comparatively lower lithium tenor of the Kyrola intersections may indicate that drilling tested a more marginal or less evolved portion of the pegmatite system; however, the geometry, internal zoning and potential extent of these pegmatites remain to be determined through further exploration.

As a result of these two styles of pegmatite intrusion at Kyrola, analysis of key fractionation elements and their respective geochemical relationships has significantly improved the company's understanding of pegmatite evolution and geochemistry across the target. Developing this geochemical framework is fundamental to effective future exploration and provides the company with an increasingly refined basis for vectoring toward more evolved and prospective for LCT pegmatite-hosted lithium mineralization.

Morkyla

At Morkyla, drill hole MK26-007 intersected a 2.90-metre alteration interval averaging 250 parts per million lithium, together with elevated cesium, tin and beryllium values of 46.2 parts per million cesium, 27.5 parts per million tin and 5.9 parts per million beryllium. While the interval is not considered economically mineralized, its geochemical signature suggests the hole may have intersected an alteration halo or less evolved part of the system, providing an important spatial vector for follow-up exploration toward potentially more fractionated and lithium-enriched pegmatites in the surrounding and up-ice target area.

MK26-007 was the eastmost hole drilled. Combining the assay results with new high-grade lithium boulders, it is suggestive of a northeastern geochemical vector for future testing.

The degree of pegmatite fractionation and associated LCT pathfinder geochemistry provide valuable vectors toward potentially more evolved and lithium-enriched portions of the pegmatite system. When considered alongside the continued discovery of high-grade spodumene-bearing boulders at surface, the results support Grit's interpretation of a broader fertile LCT pegmatite system and have materially advanced the company's understanding of the project and refined the targeting model for the next phase of exploration.

"We have taken a more direct approach, using systematic boulder prospecting to identify priority areas before testing them directly with diamond drilling," said Grit Metals chief executive officer Jeremy Poirier. "The discovery of a fractionated pegmatite system demonstrates that this strategy is successfully leading us into fertile ground and providing clear vectors for the next phase of targeting."

Mineralization on adjacent or nearby properties is not necessarily indicative of mineralization on the company's properties.

Quality assurance/quality control and sampling

Samples were submitted to and prepared at Sodankyla in Finland and analyzed at Loughrea in Ireland by ALS Laboratories, an independent commercial laboratory. ALS inserted internal standards, blanks and pulp duplicates within each sample batch as part of its own internal monitoring of quality control protocols. Grit Metals monitors precision and bias performance by inserting certified lithium standards (OREAS 750b, OREAS 754 and GTA-05) as well as blanks and half-core duplicates into each batch submitted to ALS at a rate of 1:20.

The major element oxides and trace elements including lithium, cesium, tantalum and beryllium were analyzed by ALS analytical package ME-MS89L involving digestion by Na2O2 fusion followed by ALS's supertrace ICP-MS methodology. QA/QC results to date do not indicate any analytical accuracy issues, with all standards returning values lithium values within three standard deviations of their certified mean and blanks returning expected values.

Qualified person statement

The technical content of this news release has been compiled by Jake Clark, RPGeo, vice-president of exploration, who is a qualified person as defined by National Instrument 43-101, Standards of Disclosure for Mineral Projects. As Mr. Clark is an officer and shareholder of the company, he is not independent under NI 43-101.

About Grit Metals Corp.

Grit Metals is a junior exploration company focused on lithium-cesium-tantalum pegmatites in central Finland. The company's exploration is located within one kilometre of the Keliber integrated lithium mine and production complex, a project developed by Sibanye-Stillwater Ltd. in partnership with Finnish Minerals Group. Keliber represents approximately 783 million euros of capital invested to complete construction, with a further 200 million euros shareholder financing package agreed to support staged ramp-up. The project comprises mining areas, the Paivaneva spodumene concentrator and a lithium hydroxide refinery at Kokkola, forming an integrated hard-rock lithium supply chain in the region.

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