Mr. Killian Charles reports

BRUNSWICK EXPLORATION DOUBLES EXTENT OF LITHIUM CORRIDOR AT NUUK LITHIUM PROJECT

Brunswick Exploration Inc. has extended the spodumene-bearing corridor at its Nuuk lithium project near Nuuk, Greenland, through the confirmation of an additional spodumene-bearing pegmatite over three kilometres from the initial discovery zone. This expansion nearly doubles the scale and width of the mineralized system.

Killian Charles, president and chief executive officer of Brunswick, commented: "The growing scale of the Nuuk lithium project highlights the lithium potential in Greenland. Next steps, including drilling, are currently being evaluated in conjunction with the return of drilling at Mirage and an anticipated Anatacau fall drilling campaign. In addition, our team will embark on a maiden prospecting program on our East Greenland portfolio starting mid-July.

"As lithium markets and fundamentals gain momentum, we believe that Greenland remains one of the most exciting and underexplored jurisdictions with significant critical mineral endowment globally. With first-mover advantage, Brunswick Exploration is the only company exploring for lithium in the country."

Ivisaartoq pegmatite field expanded at Nuuk Lithium

The newly discovered spodumene-bearing pegmatite significantly expands the area affected by late-stage, highly evolved lithium-bearing fluids. This corridor now measures approximately four kilometres by one kilometre. As a comparable, the company's Mirage project has a corridor of lithium-bearing pegmatites measuring approximately six by three kilometres.

The new LCT pegmatite had returned anomalously low K/Rb ratios, however, spodumene was not immediately identified in the field and a sample was collected for further analysis. Subsequently, the sample was sent for thin section analysis where the presence of spodumene was rapidly confirmed. Brunswick Exploration awaits results from another potential target which could also expand the corridor of lithium mineralization.

To date, a total of nine spodumene-bearing pegmatites have been discovered in the Ivisaartoq field, measuring up to 400 metres in length and 40 metres in width, with up to 50 per cent visual spodumene (see releases dated Oct. 30, 2024, and Aug. 12, 2025).

Hinks, Clavering and Hudson campaign

Brunswick Exploration will complete helicopter-supported prospecting and mapping throughout the East Greenland portfolio starting in mid-July which includes the Hinks, Clavering and Hudson licences (see releases dated March 13, 2025, and Feb. 3, 2026). The entire eastern coast of Greenland has never been prospected for lithium.

QA/QC (quality assurance/quality control)

Thin section samples were collected in the field by the BRW team and Dr. Donnelly Archibald of St. Francis Xavier (StFX) University, located in Antigonish, N.S. Rock samples were shipped from Nuuk to Dr. Archibald who cut them into 25 millimetres by 46 mm slabs that were shipped to Precision Petrographics in Vancouver, B.C., for the preparation of polished thin sections. The prepared sections were returned to Dr. Archibald who analyzed them using an Olympus BX53 petrographic microscope at StFX University. Spodumene was initially identified in thin section at StFX then confirmed using electron probe microanalysis (EPMA) at Memorial University in St. John's, Nfld.

Qualified person

The scientific and technical information related to this press release has been reviewed and approved by Charles Kodors, vice-president, international projects. He is a professional geologist registered in New Brunswick and Quebec.

About Brunswick Exploration Inc.

Brunswick Exploration is a Montreal-based mineral exploration company listed on the TSX Venture Exchange under symbol BRW. The company is focused on grassroots exploration for lithium in Canada, a critical metal necessary to global decarbonization and energy transition. The company is rapidly advancing the most extensive grassroots lithium property portfolio in Canada, Greenland and Saudi Arabia underpinned by its Mirage project, one of the largest undeveloped hard-rock lithium inferred mineral resource estimate in the Americas, with 52.2 Mt (million tonnes) grading 1.08 per cent Li2O (lithium oxide).

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