HECLA MINING CO/DE/

An evaluation was performed under the supervision and with the participation of our management, including the Chief Executive Officer (“CEO”) and Chief Financial Officer (“CFO”), of the effectiveness of the design and operation of our disclosure controls and procedures as required by Securities Exchange Act Rules 13a-15(e) and 15d-15(e) as of the end of the period covered by this report. Based on that evaluation, our CEO and CFO concluded that our disclosure controls and procedures, including controls and procedures designed to ensure that information required to be disclosed by us is accumulated and communicated to our management (including our CEO and CFO), were effective as of March 31, 2026 , in assuring them in a timely manner that material information required to be disclosed in this report has been properly recorded, processed, summarized and reported. On March 25, 2026, we disposed of Hecla Quebec, and as a result, from March 25, 2026, controls related to the divested operation are no longer included within the scope of our internal controls over financial reporting. Other than this change, there were no changes in the Company’s internal control over financial reporting that materially affected, or are reasonably likely to materially affect, our internal controls over financial reporting.

Internal control systems, no matter how well designed and operated, have inherent limitations. Therefore, even a system which is determined to be effective cannot provide absolute assurance that all control issues have been detected or prevented. Our systems of internal controls are designed to provide reasonable assurance with respect to financial statement preparation and presentation.