Idaho Strategic Resources, Inc.

Previous wording

The Company’s concentrate sales sometimes involve variable consideration, as they can be subject to changes in metals prices between the time of shipment and their final settlement. However, the Company can reasonably estimate the transaction price for the concentrate sales at the time of shipment using forward prices for the estimated month of settlement, and previously recorded sales and accounts receivable are adjusted to estimated settlement metals prices until final settlement for financial reporting purposes. The embedded derivative contained in the Company’s concentrate sales is adjusted to fair value through earnings each period prior to final settlement. It is unlikely a significant reversal of revenue for the concentrate receivable will occur upon final settlement of the lots. As such, the Company uses the expected value method to price the concentrate until the final settlement date occurs, at which time the final transaction price is known. At June 30, 2025, metals that had been sold but not finally settled included 9,244 ounces of which 2,258 ounces were sold at a predetermined price with the remaining 6,986 exposed to future price changes until prices are locked in based on the month of settlement. The Company has received provisional payments on the sale of these ounces with the remaining amount due reflected in gold sales receivable.

Current wording

The Company’s concentrate sales sometimes involve variable consideration, as they can be subject to changes in metals prices between the time of shipment and their final settlement. However, the Company can reasonably estimate the transaction price for the concentrate sales at the time of shipment using forward prices for the estimated month of settlement, and previously recorded sales and accounts receivable are adjusted to estimated settlement metals prices until final settlement for financial reporting purposes. The embedded derivative contained in the Company’s concentrate sales is adjusted to fair value through earnings each period prior to final settlement. It is unlikely a significant reversal of revenue for the concentrate receivable will occur upon final settlement of the lots. As such, the Company uses the expected value method to price the concentrate until the final settlement date occurs, at which time the final transaction price is known. At September 30, 2025, metals that had been sold but not finally settled included 9,533 ounces of which 8,384 ounces were sold at a predetermined price with the remaining 1,149 exposed to future price changes until prices are locked in based on the month of settlement. The Company has received provisional payments on the sale of these ounces with the remaining amount due reflected in gold sales receivable.

Previous wording

Highlights during the second quarter of 2025 include:

Current wording

Highlights during the third quarter of 2025 include:

Previous wording

The table below presents reconciliations between the most comparable GAAP measure of cost of sales and other direct production costs and depreciation, depletion, and amortization to the non-GAAP measures of cash cost per ounce and AISC per ounce for the Company’s gold production in the three and six-month periods ended June 30, 2025, and 2024.

Current wording

The table below presents reconciliations between the most comparable GAAP measure of cost of sales and other direct production costs and depreciation, depletion, and amortization to the non-GAAP measures of cash cost per ounce and AISC per ounce for the Company’s gold production in the three and nine-month periods ended September 30, 2025, and 2024.

Previous wording

Cash cost per ounce is an important operating measure that is utilized to measure operating performance. AISC per ounce is an important measure that is utilized to assess net cash flow after costs for pre-development, exploration, reclamation, and sustaining capital. Current GAAP measures used in the mining industry, such as cost of goods sold do not capture all of the expenditures incurred to discover, develop, and sustain gold production. During 2024, the Company changed the way sustaining capital is calculated to better reflect actual costs required to sustain mining operations. Prior periods have been restated in the table below to reflect this change. Idaho Strategic calculates sustaining capital by including depreciation and amortization as an estimate of property, plant, and equipment wear and tear necessary to maintain production capacity, plus Golden Chest capitalized development costs, net of current period amortization, to reflect expenses for sustaining mine access and gold production.

Current wording

Cash cost per ounce is an important operating measure that is utilized to measure operating performance. AISC per ounce is an important measure that is utilized to assess net cash flow after costs for pre-development, exploration, reclamation, and sustaining capital. Current GAAP measures used in the mining industry, such as cost of goods sold do not capture all of the expenditures incurred to discover, develop, and sustain gold production. During 2024, the Company changed the method of calculating sustaining capital to better reflect actual costs required to sustain mining operations. Prior periods have been restated in the table below to reflect this change. Idaho Strategic calculates sustaining capital by including depreciation and amortization as an estimate of property, plant, and equipment wear and tear necessary to maintain production capacity, plus Golden Chest capitalized development costs, net of current period amortization, to reflect expenses for sustaining mine access and gold production.