Insider transactions

Open market or private sale of non-derivative or derivative security

• F1 Consists of 23,894 shares held directly, 71,417 unvested performance-based units, and 103,227 unvested restricted stock units.

Open market or private sale of non-derivative or derivative security

• F2 Consists of 71,417 unvested performance-based units and 103,227 unvested restricted stock units.

Other acquisition or disposition (describe transaction)

• F3 Held as 192.951 units in Mr. Malone's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 2,275 shares.

Open market or private sale of non-derivative or derivative security

Open market or private sale of non-derivative or derivative security

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Ms. Moyes was awarded 10,984 restricted stock units on April 13, 2026. A prorated portion vested on June 22, 2026. To cover her tax liability on those vested units, Hecla Mining Company withheld 303 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F2 Award of restricted stock units that vest as follows: 6,626 shares on June 21, 2027, 6,625 shares on June 21, 2028, and 6,625 shares on June 21, 2029
• F3 Consists of 543 shares held directly and 30,014 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F4 Ms. Moyes was awarded performance rights representing the contingent right to receive between $317,625 and $635,250 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Ms. Moyes under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($635,250 in stock); 50th percentile rank among peers = target award at grant value ($317,625 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F5 Consists of 543 shares held directly, 19,876 unvested performance-based rights, and 30,014 unvested restricted stock units.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Absolom was awarded (i) 19,802 restricted stock units on June 21, 2023, 19,342 restricted stock units on June 21, 2024, and 17,182 restricted stock units on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 7,070 shares.
• F2 Consists of 11,705 shares held directly, 16,613 shares in 401(k) Plan, 42,782 unvested performance-based rights, and 24,159 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 2,086 shares on June 21, 2027, 2,086 on June 21, 2028, and 2,086 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 1,389.383 units in Mr. Absolom's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 16,613 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Absolom was awarded performance rights representing the contingent right to receive between $100,000 and $200,000 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Absolom under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($200,000) in stock); 50th percentile rank among peers = target award at grant value ($100,000 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F7 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Lawlar was awarded 44,401 restricted stock units on June 21, 2023; 71,180 restricted stock units on June 21, 2024; and 65,399 restricted stock units on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 31,764
• F2 Consists of 97,357 shares held directly, 1,130 shares held in 401(k) Plan, 161,219 performance-based units, and 91,965 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 8,214 shares on June 21, 2027; 8,213 shares on June 21, 2028; and 8,213 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 94.472 units in Mr. Lawlar's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 1,130 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Lawlar was awarded performance rights representing the contingent right to receive between $393,750 and $787,500 worth in Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Lawlar under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($787,500 in stock); 50th percentile rank among peers = target award at grant value ($393,750 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F7 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Lawlar was awarded 44,401 restricted stock units on June 21, 2023; 71,180 restricted stock units on June 21, 2024; and 65,399 shares on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. to cover his ta liability on those vested units, Hecla Mining Company withheld 79,437 shares.
• F2 Consists of 49,624 shares held directly, 161,219 performance-based units, and 91,965 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 8,214 on June 21, 2027; 8,213 shares on June 21, 2028, and 8,213 shares on Juned 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 94.472 units in Mr. Lawlar's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 1,130 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Lawlar was awarded performance rights representing the contingent right to receive between $393,750 and $787,500 worth in Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Lawlar under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($787,500 in stock); 50th percentile rank among peers = target award at grant value ($393,750 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F7 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Sienko was awarded 35,350 restricted stock units on June 21, 2023, 60,479 restricted stock units on June 21, 2024, 5,902 restricted stock units on August 20, 2024, and 60,137 restricted stock units on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 23,973 shares.
• F2 Consists of 684,053 shares held directly, 17,354 shares in 401(k)Plan, 148,432 performance-based rights, and 84,672 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 7,575 shares on June 21, 2027, 7,575 shares on June 21, 2028, and 7,574 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 1,451.345 units in Mr. Sienko's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 17,354 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Sienko was awarded performance rights representing the contingent right to receive between $363,125 and $726,250 worth of Hecla Mining Company common stock based on Hecla Mining Company's total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Sienko under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($726,250 in stock); 50th percentile rank among peers = target award at grant value ($363,125 in stock), and 0 percentile rank among peers = threshold award below 25% target.
• F7 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Allen was awarded (i) 32,673 restricted stock units on June 21, 2023, 48,138 restricted stock units on June 21, 2024, and 51,869 restricted stock units on June 21, 2025.
• F2 Consists of 98,378 shares held directly, 28,117 in 401(k) Plan, 119,555 unvested performance-based rights, and 70,173 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 6,516 shares on June 21, 2027, 6,516 shares on June 21, 2028, and 6,516 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 2,351.451 units in Mr. Allen's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 28,117 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Allen was awarded performance rights representing the contingent right to receive between $312,375 and $624,750 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Allen under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($624,750 in stock) 50th percentile rank among peers = target award at grant value ($312,375 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F7 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Aguiar was awarded (i) 31,977 restricted stock units on August 7, 2023, 48,138 restricted stock units on June 21, 2024, and 65,399 restricted stock units on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 21,659.
• F2 Consists of 99,255 shares held directly, 10,210 shares in 401(k) Plan, 138,177 performance-based rights, and 84,285 unvested stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 8,214 shares on June 21, 2027, 8,213 shares on June 21, 2028, and 8,213 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 905.191 units in Mr. Aguiar's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 10,210 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Aguiar was awarded performance rights representing the contingent right to receive between $393,750 and $787,500 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Aguiar under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($787,500 in stock); 50th percentile rank among peers = target award at grant value ($393,750 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F7 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Brown was awarded (i) 37,030 restricted stock units on June 21, 2023, (ii) 60,479 restricted stock units on June 21, 2024, and (iii) 54,124 restricted stock units on June 23, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 27,043 shares.
• F2 Consists of 382,364 shares held directly, 135,027 unvested performance-based rights, and 76,665 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 6,808 shares on June 21, 2027, 6,808 shares on June 21, 2028, and 6,808 shares on June 21, 2029.
• F4 See footnote 2.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F5 Mr. Brown was awarded performance rights representing the contingent right to receive between $326,375 and $652,750 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Brown under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($652,750 in stock); 50th percentile rank among peers = target award at grant value ($326,375 in stock), and 0 percentile rank among peers = threshold award below 25% of target.
• F6 See footnote 2.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Krcmarov was awarded (i) 126,926 restricted stock units on January 15, 2025, and (ii) a one-time grant of 166,359 restricted stock units on January 15, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 79,437 shares.
• F2 Consists of 181,241 shares held directly, 2,528 shares in a 401(k), 299,331 performance-based units, and 303,608 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 22,236 shares on June 21, 2027, 22,236 shares on June 21, 2028, and 22,236 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 211.394 units in Mr. Krcmarov's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 2,528 shares.

Payment of exercise price or tax liability by delivering or withholding securities incident to the receipt, exercise or vesting of a security issued in accordance with Rule 16b-3

• F1 Mr. Malone was awarded 51,869 restricted stock units on June 23, 2025, and 73,650 restricted stock units on July 15, 2025. One-third of those restricted stock units vested on June 22, 2026. To cover his tax liability on those vested units, Hecla Mining Company withheld 17,846 shares.
• F2 Consists of 23,994 shares held directly, 2,307 shares in 401(k) Plan, 71,417 unvested performance-based rights, and 103,227 unvested restricted stock units.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F3 Award of restricted stock units that vest as follows: 6,516 shares on June 21, 2027, 6,516 shares on June 21, 2028, and 6,516 shares on June 21, 2029.
• F4 See footnote 2.

Other acquisition or disposition (describe transaction)

• F5 Held as 192.951 units in Mr. Malone's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 2,307 shares.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F6 Mr. Malone was awarded performance rights representing the contingent right to receive between $312,375 and $624,750 worth of Hecla Mining Company common stock based on Hecla Mining Company's Total Shareholder Return performance over the 3-year period (January 1, 2026 to December 31, 2028) relative to our peers. Examples of the potential grant of shares to Mr. Malone under this plan are as follows: 100th percentile rank among peers = maximum award at 200% of target ($624,750 in stock); 50th percentile rank among peers = target award at grant value ($312,375 in stock), and 0 percentile rank among peers = threshold award below 25% target.
• F7 See footnote 2.

Other acquisition or disposition (describe transaction)

• F1 Allocation of shares in trust to the account of Jill Satre in the Hecla Mining Company Stock Plan for Nonemployee Directors.
• F2 This price is the average closing price for Hecla's common stock on the New York Stock Exchange for the prior calendar year (2025).

Other acquisition or disposition (describe transaction)

• F1 Allocation of shares in trust to the account of Mark P. Board in the Hecla Mining Company Stock Plan for Nonemployee Directors.
• F2 This price is the average closing price for Hecla's common stock on the New York Stock Exchange for the prior calendar year (2025).

Other acquisition or disposition (describe transaction)

• F1 Allocation of shares in trust to the account of Catherine J. Boggs in the Hecla Mining Company Stock Plan for Nonemployee Directors.
• F2 This price is the average closing price for Hecla's common Stock on the New York Stock Exchange for the prior calendar year (2025).
• F3 Total amount of shares held in trust on behalf of Ms. Boggs in the Hecla Mining Company Stock Plan for Nonemployee Directors.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F4 Ms. Boggs elected to receive 75% of her award under the Hecla Mining Company Stock Plan for Nonemployee Directors directly, and 25% (3,606 shares) to the trust.
• F5 See footnote 2
• F6 Consists of 261,252 shares held directly and 6,070 shares deferred into trust under the Hecla Mining Company 2010 Stock Incentive Plan.

Other acquisition or disposition (describe transaction)

• F1 Allocation of shares in trust to the account of Alice Wong in the Hecla Mining Company Stock Plan for Nonemployee Directors.
• F2 This price is the average closing price for Hecla's common stock on the New York Stock Exchange for the prior calendar year (2025).

Other acquisition or disposition (describe transaction)

• F1 Allocation of shares in trust to the account of Charles B. Stanley in the Hecla Mining Company Stock Plan for Nonemployee Directors.
• F2 This price is the average closing price for Hecla's common stock on the New York Stock Exchange for the prior calendar year (2025).

Other acquisition or disposition (describe transaction)

• F1 Allocation of shares in trust to the account of Dean Gehring in the Hecla Mining Company Stock Plan for Nonemployee Directors.
• F2 This price is the average closing price for Hecla's common Stock on the New York Stock Exchange for the prior calendar year (2025).
• F3 Total amount of shares held in trust on behalf of Mr. Gehring in the Hecla Mining Company Stock Plan for Nonemployee Directors.

Grant, award or other acquisition pursuant to Rule 16b-3(d)

• F4 Ms. Gehring elected to receive 50% of his award under the Hecla Mining Company Stock Plan for Nonemployee Directors directly, and 50% (7,211) shares to the trust.
• F5 See footnote 2
• F6 Total amount of shares held directly by Mr. Gehring.