HECLA MINING CO/DE/

1. In August 2023, Mr. Aguiar was awarded performance rights representing the contingent right to receive between $55,000 and $220,000 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2023 to December 31, 2025) relative to our peers, based on the following percentile rank within Hecla's peer group companies: 100th percentile rank among peers = maximum award at 200% of target ($220,000 in stock); 40th to 60th percentile rank among peers = target at grant value ($110,000 in stock(); and 25th percentile rank among peers = threshold award at 50% of target ($55,000 in stock).

2. In reporting the number of performance rights at the time of the award, Mr. Aguiar assumed a target (i.e., $110,000 in stock), with the common stock valued at the closing price on the day of the award ($5.16), and therefore reported an award of 21,318 performance rights. Based on Hecla Mining Company's total shareholder return ranking, Mr. Aguiar's award value was 100% and he therefore received 21,318 shares in settlement of the award (with the shares valued at the $5.16 closing price on August 7, 2023).

3. Consists of outstanding performance rights.

4. See footnotes (1) and (2). Shares received upon settlement of performance rights awarded in August 2023.

5. Consists of 105,775 shares held directly, and 108,150 unvested restricted stock units.

6. Shares withheld for tax liability of 21,318 performance rights that vested.

7. Consists of 99,255 shares held directly, and 108,150 unvested restricted stock units.