Brunswick Exploration Doubles Extent of Lithium Corridor at Nuuk Lithium Project

Brunswick Exploration Doubles Extent of Lithium Corridor at Nuuk Lithium

Project

MONTREAL, June 24, 2026 -- Brunswick Exploration Inc.  (TSX-V: BRW, OTCQB: BRWXF; FRANKFURT:1XQ; “BRW” or

the “Company”) is pleased to announce that it 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.

Mr. Killian Charles, President and CEO of BRW, 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 kilometers by one kilometer. As a comparable, the

Company’s Mirage project has a corridor of lithium-bearing pegmatites measuring approximately six by three kilometers.

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 (see Figure 1). 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

meters in length and 40 meters in width, with up to 50% visual spodumene (See releases dated October 30, 2024 and August

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

February 3, 2026). The entire eastern coast of Greenland has never been prospected for lithium.

Figure 1: Expanded Nuuk Lithium Corridor

QAQC

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, Nova Scotia. Rock samples were shipped from Nuuk to Dr. Archibald who cut them into

25mm by 46mm slabs that were shipped to Precision Petrographics in Vancouver, British Columbia 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, Newfoundland.

Qualified Person

The scientific and technical information related to this press release has been reviewed and approved by Mr. 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-V 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 52.2Mt grading 1.08% Li2O.

Investor Relations/information

Mr. Killian Charles, President and CEO ([email protected])

Contact number: 514 861 4441

Neither TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in policies of the TSX Venture

Exchange) accepts responsibility for the adequacy or accuracy of this release

Cautionary Statement on Forward-Looking Information

This news release contains "forward-looking information" within the meaning of applicable Canadian securities legislation

based on expectations, estimates and projections as at the date of this news release. Forward-looking information involves

risks, uncertainties and other factors that could cause actual events, results, performance, prospects and opportunities to

differ materially from those expressed or implied by such forward-looking information. Factors that could cause actual results

to differ materially from such forward-looking information include, but are not limited to, delays in obtaining or failures to obtain

required governmental, environmental or other project approvals; uncertainties relating to the availability and costs of financing

needed in the future; changes in equity markets; inflation; fluctuations in commodity prices; delays in the development of

projects; the other risks involved in the mineral exploration and development industry; and those risks set out in the

Corporation’s public documents filed on SEDAR at www.sedar.com. Although the Corporation believes that the assumptions

and factors used in preparing the forward-looking information in this news release are reasonable, undue reliance should not

be placed on such information, which only applies as of the date of this news release, and no assurance can be given that

such events will occur in the disclosed time frames or at all. The Corporation disclaims any intention or obligation to update or

revise any forward-looking information, whether as a result of new information, future events or otherwise, other than as

required by law. Neither the TSX Venture Exchange nor its Regulation Services Provider (as that term is defined in the policies

of the TSX Venture Exchange) accepts responsibility for the adequacy or accuracy of this news release.

A photo accompanying this announcement is available at

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