Mr. Mark Saxon reports

T2 METALS FILES NI 43-101 MINERAL RESOURCE ESTIMATE REPORT FOR THE SHERRIDON COPPER-ZINC-GOLD-SILVER PROJECT, MANITOBA, CANADA

T2 Metals Corp. has filed an independent National Instrument 43-101 technical report describing the mineral resource estimate (MRE) for its 100-per-cent-owned Sherridon copper-gold zinc-silver project in west-central Manitoba.

The technical report supports the MRE announced in the company's news release dated May 7, 2026, and can be found on the company's website and SEDAR+.

The MRE encompasses four copper-dominant volcanogenic massive sulphide (VMS) deposits: Bob, Cold Lake, Lost Lake and Jungle (tables 1a and 1b), which each begin at surface and remain open at depth. These deposits, along with the two former mines (Sherritt Gordon East and West) and other massive sulphide bodies, form part of a well-defined mineralized horizon that has been traced for over 25 kilometres of strike length at Sherridon.

Mark Saxon, president and chief executive officer of T2 Metals, commented: "The resource modelling contained within this technical report confirms what the T2 Metals team have long understood -- that Sherridon is a robust, brownfields, multideposit VMS [volcanogenic massive sulphide] district with scale, grade and room to grow. With the report now on file, our focus shifts to the next phase of work: identifying targets along strike and at depth for each resource, advancing metallurgical and environmental baseline studies, and evaluating a preliminary economic assessment. I thank Geoffrey Reed, Anders Hogrelius and Bouke van 't Riet for their work, which has validated and utilised a large drill data set to model these four significant resources."

Highlights:

• Indicated mineral resource of 10.04 million tonnes grading 0.39 per cent copper, 0.83 per cent zinc, 0.30 gram per tonne gold and 4.75 grams per tonne silver (1.0 per cent copper equivalent), containing approximately 86 million pounds copper and 96,000 ounces gold;
• Inferred mineral resource of 18.15 million tonnes grading 1.08 per cent copper, 1.00 per cent zinc, 0.27 gram per tonne gold and 7.05 grams per tonne silver (1.7 per cent CuEq), containing approximately 430 million pounds and 158,000 ounces gold;
• MRE encompasses four copper-dominant VMS deposits, all within eight kilometres of the Sherridon village, where historical mining took place;
• More than 60 per cent of mineralization defined by the NI 43-101 MRE is accessible within shallow open pits; high-grade near-surface mineralization at Cold Lake and Lost Lake deposits provide excellent near-term mining opportunities;
• Mineral resources in the indicated category represent more than one-third of total contained tonnage, reflecting a high level of confidence in the resource;
• Bob, Cold Lake and Lost Lake remain open along strike and at depth, with multiple targets identified for follow-up drilling.

Infrastructure and logistics

Few undeveloped copper projects in Canada hold the infrastructure profile that Sherridon enjoys. The project benefits from:

• An operational first-nation-owned rail line passing directly through the property, providing direct connection to processing facilities, smelters and ports;
• Year-round all-weather road access from the town of Sherridon and the broader highway network;
• Proximity to the Flin Flon mining community, providing access to an experienced mining work force, equipment suppliers and established services;
• Existing exploration camp and drill site infrastructure from previous programs;
• Grid electricity available at the Sherridon village.

These attributes will substantially reduce capital requirements and permitting timelines for a potential future mining operation and represent a material competitive advantage for project development.

Next steps

As outlined in the May 7 news release, T2 Metals is evaluating resource expansion drilling at Bob, Cold Lake, Lost Lake and Jungle deposits, mineralogical and metallurgical test work, environmental baseline studies, an NI 43-101 resource estimate for the historical Park deposit, and a preliminary economic assessment for Sherridon.

Qualified persons

The technical report was written by Geoffrey Reed of ReedLeyton Consulting, Bengt Anders Hogrelius of Hogrelius Geological Consultants and Bouke van 't Riet of Arundon Mining Solutions Oy, each an independent qualified person as defined under NI 43-101. Each qualified person has read and approved the scientific and technical information in this news release relating to the technical report and the MRE.

Strategic context

The 2026 outlook for copper remains exceptionally strong, driven by accelerating demand from AI (artificial intelligence) data centres, electrical grid expansion and persistent global supply deficits. Market commentators (for example, Chamath Palihapitiya) have widely cited copper as the best trade of 2026, as supply constraints at major global mines coincide with a structural shift in demand.

Disclaimers

The qualified person (as defined under NI 43-101, Standards of Disclosure for Mineral Projects) for the company's projects, Mr. Saxon, the company's president and chief executive officer, a fellow of the Australasian Institute of Mining and Metallurgy, and a member of the Australian Institute of Geoscientists, has reviewed and approved the contents of this release.

About T2 Metals Corp.

T2 Metals is an emerging precious and critical strategic metals company enhancing shareholder value through exploration and discovery. T2 Metals is committed to engage with rightsholders and stakeholders with the highest level of respect, ensuring that the company's exploration activities contribute positively to the communities in which T2 Metals operates.

We seek Safe Harbor.