Sec Form 4 Filing - Brown Robert Denis @ HECLA MINING CO/DE/ - 2026-06-22

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549 STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person Brown Robert Denis 2. Issuer Name and Ticker or Trading Symbol HECLA MINING CO/DE/ [ HL] 5. Relationship of Reporting Person(s) to Issuer (Check all applicable) _____ Director _____ 10% Owner X __ Officer (give title below) _____ Other (specify below) VP - Corporate Development (Last) (First) (Middle) 6500 N MINERAL DR, SUITE 200 3. Date of Earliest Transaction (MM/DD/YY) 06/22/2026 (Street) COEUR D ALENE, ID83815 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 3. Transaction Code (Instr. 8) 4. Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5) 5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4) 6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4) 7. Nature of Indirect Beneficial Ownership (Instr. 4) Code V Amount (A) or (D) Price Common Stock 06/22/2026 F 27,043 ( 1 ) D $ 15.98 594,056 ( 2 ) D Common Stock 06/22/2026 A 20,424 ( 3 ) A $ 15.98 594,056 ( 4 ) D

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned ( e.g. , puts, calls, warrants, options, convertible securities) 1. Title of Derivative Security (Instr. 3) 2. Conversion or Exercise Price of Derivative Security 3. Transaction Date (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 4. Transaction Code (Instr. 8) 5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4, and 5) 6. Date Exercisable and Expiration Date (MM/DD/YY) 7. Title and Amount of Underlying Securities (Instr. 3 and 4) 8. Price of Derivative Security (Instr. 5) 9. Number of Derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4) 10. Ownership Form of Derivative Security: Direct (D) or Indirect (I) (Instr. 4) 11. Nature of Indirect Beneficial Ownership (Instr. 4) Code V (A) (D) Date Exercisable Expiration Date Title Amount or Number of Shares Performance rights $ 0 06/22/2026 A 20,424 ( 5 ) 01/01/2029 01/01/2029 Common Stock 20,424 $ 0 594,056 ( 6 ) D

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other Brown Robert Denis 6500 N MINERAL DR SUITE 200 COEUR D ALENE, ID83815 VP - Corporate Development Signatures Tami D. Whitman, Attorney-in-Fact for Robert D. Brown 06/24/2026 Signature of Reporting Person Date

Explanation of Responses:

( 1 )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. ( 2 )Consists of 382,364 shares held directly, 135,027 unvested performance-based rights, and 76,665 unvested restricted stock units. ( 3 )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. ( 4 )See footnote 2. ( 5 )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. ( 6 )See footnote 2.

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.

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