Mr. Killian Charles reports

BRUNSWICK EXPLORATION LAUNCHES SUMMER DRILL PROGRAM TARGETING MIRAGE AND ANATACAU

Brunswick Exploration Inc. has begun a new drilling program for both of its flagship Quebec projects located in the Eeyou Istchee-James Bay region: Anatacau Main and Mirage. A total of 6,000 metres are expected to be drilled across both assets, with approximately 2,000 metres planned at Anatacau and 4,000 metres to be drilled at Mirage.

Killian Charles, president and chief executive officer of Brunswick Exploration, commented: "With an inferred mineral resource estimate (MRE) of 52.2 million tonnes grading 1.08 per cent Li2O [lithium oxide], Mirage is already one of the most important lithium assets in Canada. We see significant potential to rapidly expand both the MRE and the associated exploration target. Many of the pegmatites drilled to date remain open in all directions and, in addition, several lithium-bearing pegmatites have yet to be drill tested.

"In parallel, we believe that Anatacau could be as significant as Mirage. The drilling will continue to outline the potential we see at this asset. No other lithium junior company in Canada has such a unique combination of advanced, high potential assets. We believe the planned summer campaign will cement our position as one of the most exciting lithium exploration companies in Canada."

Overview of the summer drill program

Drilling will initially begin at Anatacau for approximately one month before moving to Mirage for the remainder of the campaign. A total of 6,000 metres are expected to be drilled, with 2,000 metres allocated to Anatacau and 4,000 metres allocated to Mirage. However, final metreage at either project may be expanded as necessary as the company continues to expand both assets.

Overview of Anatacau drilling

The drilling at Anatacau aims to extend the known spodumene pegmatite dikes as well as to discover new ones. The spodumene pegmatite dike field defined to date at the Anais zone extends over 600 metres long and 450 metres wide and remains open in all directions. The largest spodumene-bearing pegmatite, the Anais Main dike, measures approximately 40 metres in width and recently extended the strike length to over 350 metres (see June 10, 2026, news release). Several mineralized pegmatites, exceeding 10 metres in width, surround Anais Main dike and are interpreted to be in a stacked pegmatite system. The most significant intercepts thus far include 1.31 per cent Li2O over 120.7 metres in hole AN-25-05 and 1.31 per cent Li2O over 90.5 metres in hole AN-26-07.

Overview of drilling at Mirage

Drilling will initially target the lateral extension of the MR-1 and MR-4 dikes, which are the richest dikes to date at Mirage. The MR-1 dike is in the northern part of the deposit and is defined over 400 metres in strike length and remains open in all directions. This dike returned high-grade results, including 2.57 per cent Li2O over 25.8 metres in hole MR-23-02 (see Jan. 24, 2024, news release).

Drilling will then move to MR-4 dike, the most evolved pegmatite on the project so far, located in the southern part of the deposit. It is defined over 600 metres in strike lengths and remains open in all directions. MR-4 also returned high-grade results, including 2.75 per cent Li2O over 16.2 metres in hole MR-23-14 (see Jan. 24, 2024, news release).

The campaign will continue with drilling untested spodumene pegmatite outcrops, particularly north of the Escale Lake. Additional drilling is also planned to test new high-potential targets along the entire eight-kilometre-long lithium-bearing corridor identified to date at Mirage with more than 350 spodumene pegmatite boulders and locations with spodumene in tills so far. Drilling will be conducted using a helicopter-borne drill rig over a period of approximately two months.

Market-making services

The company also announces that it has engaged the services of ICP Securities Inc. to provide automated market-making services, including use of its proprietary algorithm, ICP Premium, in compliance with the policies and guidelines of the TSX Venture Exchange and other applicable legislation. ICP will be paid a monthly fee of $7,500, plus applicable taxes. The agreement between the company and ICP was signed with a start date of June 18, 2026, and is for four months (the initial term) and shall be automatically renewed for subsequent one-month terms (each month called an additional term) unless either party provides written notice at least 30 days prior to the end of the initial term or an additional term, as applicable. There are no performance factors contained in the agreement and no stock options or other compensation in connection with the engagement. ICP and its clients may acquire an interest in the securities of the company in the future.

ICP is an arm's-length party to the company. ICP's market-making activity will be primarily to correct temporary imbalances in the supply and demand of the company's shares. ICP will be responsible for the costs it incurs in buying and selling the company's shares, and no third party will be providing funds or securities for the market-making activities.

Qualified person

The scientific and technical information contained in this press release has been reviewed and approved by Simon T. Hebert, vice-president, development. He is a professional geologist registered in Quebec and is a qualified person as defined by National Instrument 43-101.

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 52.2 million tonnes grading 1.08 per cent Li2O.

We seek Safe Harbor.