Grande Portage Resources Ltd. reported an updated NI 43-101 Independent Mineral Resource Estimate for its 100% controlled Herbert Gold Deposit located in S.E. Alaska. The Mineral Resource Estimate has a base case mineral resource cut to 181 grams per tonne gold (gpt Au). The Mineral Resource is reported at a 2.5 gpt cutoff grade and consists of: An Indicated Resource of 1,438,500 ounces of gold at an average grade of 9.47 gpt Au in 4,726,000 tonnes.

An Inferred Resource of 515,700 ounces of gold at an average grade of 8.85 gpt Au in 1,813,000 tonnes. An Indicated Resource of 891,600 ounces of silver at an average grade of 5.86 gpt Ag in 4,726,000 tonnes. An Inferred Resource of 390,600 ounces of silver at an average grade of 7.33 gpt Ag in 1,813,000 tonnes.

The updated NI 43-101 mineral resource estimate, prepared by DRW Geological Consultants Ltd., uses a total of 240 drill holes and 7 channel cuts to calculate the Mineral Resource. At total of 5,810 samples were assayed for gold and 3,755 samples were analyzed for additional pathfinder elements. All unassayed sections of core are assumed to be 0 gpt gold.

All 1.5 m x 8 m x 8m blocks require a minimum of 2 and a maximum of 8 composites within 100 m to be estimated. All blocks must be at least 50% within the solid model that describes the vein to be considered. Blocks that are within 60 m of a drill hole are considered Indicated and all other blocks are categorized as Inferred.

Mineral Resources are not Mineral Reserves and do not have demonstrated economic viability. There is no certainty that all or any part of the Mineral Resources will be converted into Mineral Reserves. The estimate of Mineral Resources requires assumptions that are believed to be reasonable and may be materially affected by environmental permitting, legal, title, taxation, sociopolitical, marketing, or other relevant issues.

All quantities are rounded to an appropriate significant figure and sums may not add up due to rounding.