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Grande Portage Resources Announces Extension of Expiry Date for Warrants

Share Capital & Compensation

1050 - 1090 West Georgia Street

Vancouver, British Columbia. V6E 3V7

Grande Portage Resources Announces Extension of Expiry Date for Warrants

Vancouver, British Columbia —April 25, 2025 – Grande Portage Resources Ltd. (TSXV: GPG)

(OTCQB: GPTRF) (FSE: GPB) ("Grande Portage" or the "Company") announces that it has applied to

the TSX Venture Exchange to extend the expiry date for 5,550,000 of its outstanding unlisted common share

purchase warrants (the "Warrants"). The Warrants, each of which is currently exercisable to purchase one

common share of the Company at $0. 30 per share, were originally issued by the Company as part of non -

brokered unit private placement financing completed in May 2023. The Company will extend the expiry date

of the Warrants to 4:30 pm PST on May 10, 2026, subject to TSX Venture Exchange approval.

The Company currently has an aggregate of 5,550,000 Warrants issued and outstanding pertaining to the

Private Placement, all of which are eligible for amendment, pursuant to the policies of the Exchange.

About Grande Portage:

Grande Portage Resources Ltd. is a publicly traded mineral exploration company focused on advancing the

New Amalga Mine project, the outgrowth of the Herbert Gold discovery situated approximately 25 km north

of Juneau, Alaska. The Company holds a 100% interest in the New Amalga property. The New Amalga gold

system is open to length and depth and is host to at least six main composite vein-fault structures that contain

ribbon structure quartz -sulfide veins. The project lies prominently within the 160km long Juneau Gold Belt,

which has produced over eight million ounces of gold.

The Company's updated NI#43 -101 Mineral Resource Estimate (MRE) reported at a base case mineral

resources cut -off grade of 2.5 grams per tonne gold (g/t Au) and consists of: an Indicated Resource of

1,438,500 ounces of gold at an average grade of 9.47 g/t Au (4,726,000 tonnes); and an Inferred Resource of

515,700 ounces of gold at an average grade of 8.85 g/t Au (1,813,000 tonnes), as well as an Indicated

Resource of 891,600 ounces of silver at an average grade of 5.86 g/t Ag (4,726,000 tonnes); and an Inferred

Resource of 390,600 ounces of silver at an average grade of 7.33 g/t silver (1,813,000 tonnes). The MRE was

prepared by Dr. David R. Webb, Ph.D., P.Geol., P.Eng. (DRW Geological Consultants Ltd.) with an

effective date of July 17, 2024.

ON BEHALF OF THE BOARD

"Ian Klassen"

Ian M. Klassen

President & Chief Executive Officer

Tel: (604) 899-0106

Email: [email protected]

1050 - 1090 West Georgia Street

Vancouver, British Columbia. V6E 3V7

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Cautionary Statement Regarding Forward-Looking Information

This news release includes certain "forward -looking statements" under applicable Canadian securities

legislation. Forward-looking statements include estimates and statements that describe the Company's future

plans, objectives or goals, including words to the effect that the Company or management expects a stated

condition or result to occur. Forward -looking statements may be identified by such terms as "believes",

"anticipates", "expects", "estimates", "may", "could", "would", "will", or "plan". Since forward -looking

statements are based on assumptions and address future events and conditions, by their very nature they

involve inherent risks and uncertainties as described in the Company's filings with Canadian securities

regulators. There can be no assurance that such statements will prove to be accurate, as actual results and

future events could differ materially from those anticipated in such statements. Accordingly, readers should

not place undue reliance on forward -looking statements. The Company 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 SERVICE PROVIDER (AS THAT

TERM IS DEFINED UNDER THE POLICIES OF THE EXCHANGE) ACCEPTS RESPONSIBILITY FOR THE

ADEQUACY OR ACCURACY OF THIS NEWS RELEASE