The preparation of financial statements in conformity with IFRS requires the Company to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. The Company also makes estimates and assumptions concerning the future. The determination of estimates requires

the exercise of judgement based on various assumptions and other factors such as historical experience and current and expected economic conditions. Actual results could differ from those estimates.

Estimates and assumptions are continually evaluated and are based on historical experience and other factors, including expectations of future events that are believed to be reasonable under the circumstances.

Critical accounting estimates and assumptions

Mineral reserves and resources

Mineral reserves are estimates of the amount of minable ore that can be economically and legally extracted from the Company’s mining properties. The Company estimates its mineral reserve and mineral resources based on information compiled by Qualified Persons as defined by Canadian Securities Administrators National Instrument 43-101, Standards for Disclosure of Mineral Projects. Such information includes geological data on the size, depth and shape of the mineral deposit, and requires complex geological judgments to interpret the data. The estimation of reserves or resources is based upon factors such as estimates of commodity prices, future capital requirements, and production costs along with geological assumptions and judgments made in estimating the size and grade that comprise the mineral reserves or resources. Changes in the mineral reserve or mineral resource estimates may impact the carrying value of mineral properties and deferred development costs, property, plant and equipment, provision for site reclamation and closure, recognition of deferred income tax assets and depreciation and amortization charges.

Impairment of exploration and evaluation assets, mining interests and plant and equipment

The Company’s accounting policy for exploration and evaluation expenditure results in certain items being capitalized. This policy requires management to make certain estimates and assumptions as to future events and circumstances, in particular whether an economically viable extraction operation can be established. Any such estimates and assumptions may change as new information becomes available. If, after having capitalized the expenditure, a judgement is made that recovery of the expenditure is unlikely, the relevant capitalized amount will be written off to the consolidated statement of loss.

Development activities commence after project sanctioning by senior management. Judgement is applied by management in determining when a project has reached a stage at which economically recoverable reserves or resources exist such that development may be sanctioned. In exercising this judgement, management is required to make certain estimates and assumptions similar to those described above for capitalized exploration and evaluation expenditure. Such estimates and assumptions may change as new information becomes available. If, after having started the development activity, a judgement is made that a development asset is impaired, the appropriate amount will be written off to the consolidated statement of loss.

The Company’s recoverability of its recorded value of its exploration and evaluation assets, mining interests and plant and equipment is based on market conditions for metals, underlying mineral resources associated with the properties and future costs that may be required for ultimate realization through mining operations or by sale.

At each reporting date, the Company evaluates each mining property and project on results to date to determine the nature of exploration, other assessment and development work that is warranted in the future. If there is little prospect of future work on a property or project being carried out within a prolonged period from completion of previous activities, the deferred expenditures related to that property or project are written off or written down to the estimated amount recoverable unless there is persuasive evidence that an impairment allowance is not required.

The recoverable amounts of exploration and evaluation assets, mining interests and plant and equipment are determined using the higher of value in use or fair value less costs of disposal. Value in use consists of the net present value of future cash flows expected to be derived from the asset in its current condition based on observable data. The calculations use cash flow projections based on financial budgets approved by management. These cash flow projections are based on expected recoverable ore reserves or resources, grade per ounce, recovery rates, selling

prices of metals and operating costs. Fair value less costs of disposal consist of the expected sale price (the amount that a market participant would pay for the asset) of the asset net of transaction costs.

The Company may use other approaches in determining the fair value which may include estimates related to (i) dollar value per ounce of mineral reserve/resource; (ii) cash-flow multiples; (iii) market capitalization of comparable assets; and (iv) comparable sales transactions. Any changes in the quality and quantity of recoverable ore reserves, expected selling prices and operating costs could materially affect the estimated fair value of mining interests, which could result in material write-downs or write-offs in the future.

Provision for environmental rehabilitation

Provision for environmental rehabilitation is based on management best estimates and assumptions, which management believes are a reasonable basis upon which to estimate the future liability, based on the current economic environment. These estimates take into account any material changes to the assumptions that occur when reviewed regularly by management and are based on current regulatory requirements. Significant changes in estimates of discount rate, contamination, rehabilitation standards and techniques will result in changes to the provision from period to period. Actual reclamation and closure costs will ultimately depend on future market prices for the costs which will reflect the market condition at the time the costs are actually incurred. The final cost of the rehabilitation provision may be higher or lower than currently provided for.

Accounting for streaming arrangements

The Company entered into stream agreements (Note 17). The classification of the deposit as a contract liability is a key judgment and is based on the expected delivery of the Company’s future production. Management exercised judgment in applying the accounting standard IFRS 15 Revenue from contracts with customers. To determine the transaction price for the stream agreement, the Company made estimates with respect to the estimated timing and value of future deliveries in order to determine the interest implicit rate for each agreement.

Critical judgements in applying the Company’s accounting policies

Going Concern

The assessment of the Company’s ability to continue as a going concern involves judgment as it relies on the Company’s estimation of future cash flows from the financial statement date, and the availability of funds to meet those cash flow requirements. Estimates and assumptions are continually evaluated and are based on historical experience and other factors, including expectations of future events and budgeted expenditures (approved by the Board) that are believed to be reasonable under the circumstances (Note 1).

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Impairment of investments in associates

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The Company follows the guidance of IAS 28 Investments in Associates and Joint Ventures to assess whether there are impairment indicators which may lead to the recognition of an impairment loss with respect to its net investment in an associate. This determination requires significant judgement in evaluating if a decline in fair value is significant or prolonged, which triggers a formal impairment test. In making this judgement, the Company’s management evaluates, among other factors, the duration and extent to which the fair value of an investment is less than its carrying amount, the volatility of the investment and the financial health and business outlook for the investee, including factors such as the current and expected status of the investee’s exploration projects and changes in financing cash flows.

Impairment of exploration and evaluation assets

Assessment of impairment of exploration and evaluation assets (including exploration and evaluation assets under a farm-out agreement) requires the use of judgements when assessing whether there are any indicators that could give rise to the requirement to conduct a formal impairment test on the Company’s exploration and evaluation assets. Factors

which could trigger an impairment review include, but are not limited to, an expiry of the right to explore in the specific area during the period or will expire in the near future, and is not expected to be renewed; substantive exploration and evaluation expenditures in a specific area is neither budgeted nor planned; exploration for and evaluation of mineral resources in a specific area have not led to the discovery of commercially viable quantities of mineral resources and the Company has decided to discontinue such activities in the specific area; sufficient data exists to indicate that, although a development in a specific area is likely to proceed, the carrying amount of the assets is unlikely to be recovered in full from successful development or by sale; significant negative industry or economic trends; interruptions in exploration and evaluation activities by the Company; and a significant change in current or forecast commodity prices. As at December 31, 2025, no impairment indicators were identified and, as such, no impairment test was performed.

Changes in the judgements used in determining the recoverable value of the exploration and evaluation assets could impact the impairment analysis.