PMET Announces Multiple New Lithium/Caesium Discoveries in 2025 Drilling at the Shaakichiuwaanaan Property

The December 14, 2025 news release announces the successful completion of the 2025 drill campaign at the Shaakichiuwaanaan Property, totaling 57,024 metres across 245 holes. The program was completed on schedule and under budget.

Key highlights from the 41,943 metres (173 holes) with assays reported include: - New Discoveries: A new lithium zone at the CV4 Pegmatite, interpreted as a potential 1.5 km extension of the main CV5 deposit. A new high-grade caesium zone was also discovered at the CV12 Pegmatite, traced over a ~200 m strike. - Strike Extensions: The CV5 Pegmatite strike length has been extended to 5.0 km, and the CV13 Pegmatite strike has been extended to 3.2 km. - Significant Intercepts: - CV4 Pegmatite: 27.0 m at 1.14% Li2O and 13.0 m at 1.37% Li2O. - CV12 Pegmatite: 41.3 m at 0.88% Li2O and 29.4 m at 1.28% Li2O, including a high-grade caesium intercept of 3.0 m at 5.82% Cs2O. - CV5 Pegmatite: 24.9 m at 1.34% Li2O and a very high-grade caesium intercept of 0.5 m at 17.92% Cs2O. - CV13 Pegmatite: 11.7 m at 1.16% Li2O. - Pending Assays: Assays for 15,081 metres (72 holes) remain pending, primarily from the CV13 Vega Zone, which is known for its caesium potential. - Next Steps: The company plans to interpret the new data to update geological models, schedule a revised economic study for H2 2026, and is permitting for an underground bulk sample at CV5.

This news is materially positive. While the company has a strong track record of delivering excellent drill results, this release is not merely routine. It significantly expands the potential scale of the project and adds another layer to the high-value caesium by-product story.

Progression of Company Projections and Initiatives: - Strategic Partnership: The year began with the closing of a C$69M strategic investment from Volkswagen (VW) at C$4.42/share, a major de-risking event that provided a strong balance sheet and a binding offtake agreement for 100,000 tpa of spodumene concentrate. - By-Product Potential: Throughout 2025, the company methodically built the case for caesium and tantalum by-products. This started with the discovery announcement in March, followed by confirmation of high grades in April, identification of pollucite as the host mineral in June, and culminating in a maiden caesium MRE in July, claimed to be the world's largest. Tantalum was similarly advanced, with test work in September confirming marketable concentrates could be produced from the waste stream. - Feasibility Study (FS): The company successfully delivered a positive lithium-only Feasibility Study for the CV5 deposit on October 20, 2025. This was a critical milestone, confirming the project's technical and economic viability with an after-tax NPV8 of C$1.59B and an IRR of 18.1%.

Assessment of the Latest News: The December 14 results build directly on this momentum. The key impacts are: 1. Increased Scale: The discovery at CV4, potentially extending the main CV5 deposit by 1.5 km, is significant. It reinforces the district-scale potential of the property, suggesting the ultimate resource could be considerably larger than what was modeled in the recent FS. 2. Enhanced By-Product Value: The discovery of a new caesium zone at CV12, along with high-grade caesium hits at CV5, strengthens the caesium thesis beyond the already impressive CV13 deposit. This adds credibility to the potential for a significant, multi-faceted revenue stream that could materially enhance project economics. 3. Operational Excellence: Completing an expansive drill program on schedule and under budget demonstrates strong operational capability, which is a crucial positive signal as the company transitions towards development.

This news confirms the Shaakichiuwaanaan property is a rare, highly endowed LCT pegmatite system that continues to grow. While the market's primary focus is on the FS-defined CV5 lithium project, these results materially increase the project's long-term upside and optionality.

PMET Resources Inc. is a Canadian critical minerals exploration and development company focused on its 100%-owned flagship Shaakichiuwaanaan Project in the Eeyou Istchee James Bay region of Quebec. The project hosts the CV5 spodumene pegmatite, which is the largest hard-rock lithium resource in the Americas. The company has completed a positive Feasibility Study on a large-scale, long-life lithium-only mining operation at CV5. The project also contains the world's largest known pollucite-hosted caesium resource at the CV13 pegmatite, along with significant tantalum potential, positioning it as a potential multi-commodity critical minerals producer.