Mr. Ian Klassen reports

GRANDE PORTAGE CLOSES NON-BROKERED PRIVATE PLACEMENT PURSUANT TO THE LISTED ISSUER FINANCING EXEMPTION

Grande Portage Resources Ltd. has closed its non-brokered private placement initially announced on June 3, 2025, and upsized on June 5, 2025, with the sale of 22.5 million units priced at 20 cents per unit for aggregate gross proceeds of $4.5-million. The offering is being carried out pursuant to Part 5A of National Instrument 45-106, Prospectus Exemptions, to purchasers resident in Canada, other than Quebec, and in jurisdictions outside of Canada in compliance with the applicable securities laws of those jurisdictions. There is an offering document related to this offering that can be accessed under Grande Portage's profile and on the company's website. All investors participating in the closing subscribed for units under the LIFE (listed issuer financing exemption), and the units issued pursuant to the exemption are not subject to any statutory hold period in Canada.

Each unit consists of one common share in the capital of the company and one common share purchase warrant. Each warrant entitles the holder thereof to acquire one additional common share at an exercise price of 26 cents per common share for a period of three years after closing and is subject to a four-month hold period which will expire on the date that is four months and one day from the date of issue. No insiders participated in the offering. The offering was conditionally approved by the TSX Venture Exchange but is subject to the final approval of the TSX-V.

The company will pay an aggregate of $263,550 in cash and issue 1,317,750 non-transferable finder warrants in connection with this offering. Each finder warrant entitles the holder to acquire one common share of the company at 20 cents per share for 36 months from the date of closing. All finders' fees are subject to compliance with applicable securities legislation and TSX-V policies.

Grande Portage intends to use the net proceeds of the offering for furthering the exploration and development of its New Amalga gold project in Alaska as well as general working capital purposes.

About Grande Portage Resources Ltd.

Grande Portage is a publicly traded mineral exploration company focused on the New Amalga gold project (formerly named the Herbert gold project), situated approximately 25 kilometres north of Juneau, Alaska. The company holds a 100-per-cent interest in the New Amalga gold project. The New Amalga gold project is open to length and depth and is host to at least six main composite vein-fault structures that contain ribbon structure quartz-sulphide veins. The project lies prominently within the 160-kilometre-long Juneau gold belt, which has produced over seven million ounces of gold.

The company's updated NI 43-101 mineral resource estimate reported at a base-case cut-off grade of 2.5 grams per tonne gold consists of an indicated resource of 1,438,500 ounces of gold at an average grade of 9.47 grams per tonne gold (4,726,000 tonnes) and an inferred resource of 515,700 ounces of gold at an average grade of 8.85 grams per tonne gold (1,813,000 tonnes) as well as an indicated resource of 891,600 ounces of silver at an average grade of 5.86 grams per tonne silver (4,726,000 tonnes) and an inferred resource of 390,600 ounces of silver at an average grade of 7.33 grams per tonne silver (1,813,000 tonnes). The MRE was prepared by Dr. David R. Webb, PhD, PGeol, PEng (DRW Geological Consultants Ltd.), with an effective date of July 17, 2024. Additional information on the New Amalga mine project is available in the technical report titled "Technical Report of the Herbert Gold Property, Juneau District, Southeast Alaska," dated July 17, 2024, which is available under Grande Portage's profile.

We seek Safe Harbor.