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Grande Portage Resources Files on SEDAR+ the Mineral Resource Estimate for the Herbert Gold project Detailing Indicated Resources of 1,438,500 Ounces at 9.47gpt Gold and Inferred Resources of 515,700 Ounces at 8.85gpt Gold

Drill Results Resource Estimates

1050 - 1090 West Georgia Street

Vancouver, British Columbia. V6E 3V7

Grande Portage Resources Files on SEDAR+ the Mineral Resource Estimate for the

Herbert Gold project Detailing Indicated Resources of 1,438,500 Ounces at 9.47gpt

Gold and Inferred Resources of 515,700 Ounces at 8.85gpt Gold

Vancouver, British Columbia —July 22, 2024 – Grande Portage Resources Ltd. (TSXV: GPG)

(OTCQB: GPTRF) (FSE: GPB) ("Grande Portage" or the "Company") is pleased to report that it has

filed an updated technical report on the Herbert Gold Project located near Juneau, Alaska on SEDAR.

The Report entitled “Technical Report on the Herbert Gold Property” is effective as of July 17 th, 2024, and

was prepared by DRW Geological Consultants Ltd. and is in accordance with the National Instrument 43 -

101-Standards of Disclosure for Mineral projects. The technical report also includes a description of the

project history, geology, mineralization, drilling, sampling procedures, and laboratory Quality

Assurance/Quality Control procedures, as well as recommendations for further work.

There are no material differences between the mineral resource estimates in the technical report and the

Company's June 12, 2024 news release.

The complete technical report is available at www.sedarplus.ca and on the Company's website.

The Company also announces that, subject to TSX Venture Exchange approval, it has granted incentive stock

options to certain Directors, Officers and Consultants to purchase up to 2, 600,000 common shares

exercisable at a price of $0.20 (CAD) per share for a period of five years.

Dr. D.R. Webb, Ph.D., P.Geol., P.Eng is the QP within the meaning of NI 43 -101 and has reviewed and

approved the technical disclosure in this release. Dr. Webb is independent of Grande Portage within the

meaning of NI 43-101.

About Grande Portage:

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

Gold discovery situated approximately 25 km north of Juneau, Alaska. The Company holds a 100% interest

in the Herbert property. The Herbert Gold property 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 seven million ounces of gold.

The Company's updated NI#43-101 Mineral Resource estimate 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 5.8 6 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).

ON BEHALF OF THE BOARD

1050 - 1090 West Georgia Street

Vancouver, British Columbia. V6E 3V7

- 2 -

"Ian Klassen"

Ian M. Klassen

President & Chief Executive Officer

Tel: (604) 899-0106

Email: [email protected]

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.

Cautionary Note to United States Investors

This news release has been prepared in accordance with the requirements of the securities laws in effect in

Canada, which differ from the requirements of U.S. securities laws. Unless otherwise indicated, all resource

and reserve estimates included in this news release have been prepared in accordance with National

Instrument 43-101 Standards of Disclosure for Mineral Projects (“NI 43 -101”) and the Canadian Institute of

Mining, Metallurgy, and Petroleum 2014 Definition Standards on Mineral Resources and Mineral Reserves.

NI 43-101 is a rule developed by the Canadian Securities Administrators which establishes standards for all

public disclosure an issuer makes of scientific and technical information concerning mineral projects.

Canadian standards, including NI 43 -101, differ significantly from the requirements of the SEC, and Mineral

Resource and reserve information contained herein may not be comparable to similar information disclosed

by U.S. companies. In particular, and without limiting the generality of the foregoing, the term "resource”

does not equate to the term "reserves”. Under U.S. standards, mineralization may not be classified as a

"reserve” unless the determination has been made that the mineralization could be economically and legally

produced or extracted at the time the reserve determination is made. The SEC's disclosure standards normally

do not permit the inclusion of information concerning "measured Mineral Resources”, "indicated Mineral

Resources” or "inferred Mineral Resources” or other descriptions of the amount of mineralization in mineral

deposits that do not constitute "reserves” by U.S. standards in documents filed with the SEC. Investors are

cautioned not to assume that any part or all of mineral deposits in these categories will ever be converted into

reserves. U.S. investors should also understand that "inferred Mineral Resources” have a great amount of

uncertainty as to their existence and great uncertainty as to their economic and legal feasibility. It cannot be

assumed that all or any part of an "inferred Mineral Resource” will ever be upgraded to a higher category.

Under Canadian rules, estimated "inferred Mineral Resources” may not form the basis of feasibility or pre -

feasibility studies except in rare cases. Investors are cautioned not to assume that all or any part of an

"inferred Mineral Resource” exists or is economically or legally mineable. Disclosure of "contained ounces” in

a resource is permitted disclosure under Canadian regulations; however, the SEC normally only permits

issuers to report mineralization that does not constitute "reserves” by SEC standards as in -place tonnage and

grade without reference to unit measures. The requirements of NI 43 -101 for identification of "reserves” are

also not the same as those of the SEC, and reserves reported by the Company in compliance with NI 43 -101

may not qualify as "reserves” under SEC standards. Accordingly, information concerning mineral deposits set

forth herein may not be comparable with information made public by companies that report in accordance

with U.S. standards.

1050 - 1090 West Georgia Street

Vancouver, British Columbia. V6E 3V7

- 3 -

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