(i) This amount mainly consists of USD 102,147 related to tax claim payments concerning withholding taxes and litigation over transfer pricing adjustments in transactions with related parties (USD 64,656 in December 2024), and — USD 20,532 related to income tax claim payments arising from the interpretation of the application of Cerro Lindo’s stability agreement for the 2018 fiscal year (USD 18,300 in December 2024). Both payments stem from ongoing legal discussions, in which the Company has not recognized any provision, but was required to "settle the payment" to continue pursuing the matters at judicial levels. The payments were made in Peruvian soles and are subject to exchange rate fluctuations against the US dollar.

(ii) Other recoverable taxes are composed mainly of tax credits related to ICMS (Tax on Circulation of Goods and Services), primarily generated from purchases. Additionally, there are PIS (Social Integration Program) and COFINS (Contribution to Social Security Financing) credits, essentially arising from the acquisition of fixed assets.

(i) On December 17, 2025, the Company entered into a second commercial advance agreement with a customer, in which it agreed to sell concentrates produced by El Porvenir for twelve months period and received an advance payment of USD 50,000. The advance payment was recorded as “Other liabilities”, and the related revenues will be recognized upon delivery of the concentrates, when the corresponding performance obligations are satisfied. (As of December 31, 2024: USD 50,000 received under a similar commercial advance agreement).

(ii) Other tax liabilities are composed of various taxes arising from the Company's operations, including amounts related to COFINS, PIS and ICMS, mainly associated with routine operational activities, as well as ISS (Service Tax) applicable to service-related transactions. The balance also includes Other Taxes, Duties and Contributions, which comprise- ancillary and nonrecurring charges, together with Mining Special Tax and Fees and other regulatory charges classified as Various Taxes. Additionally, it includes amounts related to Mining Rights resulting from specific legal obligations associated with mining activities, and VAT Payable, arising from transactions subject to value-added tax in certain -jurisdiction.

In 2025, the Tax Reform was regulated by Complementary Law No. 214 for Brazilian entities, which establishes the gradual replacement of current taxes by the Goods and Services Tax (IBS) and the Contribution on Goods and Services (CBS).

Considering that the transition period is expected to begin in 2026, Management has assessed that there are no material impacts to be recognized in the Financial Statements for the year ended December 31, 2025.

Management continues to perform assessments of the potential impacts of the Tax Reform on its operations, including tax, accounting and operational aspects, as well as to evaluate and implement the necessary system and process adjustments to ensure the Company’s appropriate adaptation to the new tax framework.