[Form 4] HECLA MINING CO/DE/ Insider Trading Activity

Q: What insider transaction did Hecla Mining (HL) report for David C. Sienko?

The filing reports that David C. Sienko , Senior Vice President, General Counsel and Secretary of Hecla Mining, sold 207,553 shares of common stock on 12/17/2025 at $19.42 per share and had an additional transaction related to his 401(k) plan on 12/18/2025.

Q: How many Hecla Mining (HL) shares did David C. Sienko sell and at what price?

On 12/17/2025 , David C. Sienko sold 207,553 shares of Hecla Mining common stock at a price of $19.42 per share, reported with transaction code "S" for a sale.

Q: How many Hecla Mining (HL) shares does David C. Sienko beneficially own after the reported transactions?

After the reported sale, David C. Sienko beneficially owns 906,370 shares directly and through equity awards, consisting of 637,753 shares held directly, 149,589 unvested performance-based stock units, and 119,028 unvested restricted stock units. He also holds 16,287 shares indirectly through his 401(k) plan.

Q: What was the 401(k) plan transaction reported by Hecla Mining (HL) for David C. Sienko?

On 12/18/2025 , a transaction coded "J" shows 16,287 shares of Hecla Mining common stock acquired indirectly in David C. Sienko's 401(k) plan , representing 1,366.686 units in the Hecla Mining Company Capital Accumulation Plan, reported at a price of $0 .

Filing Impact

(Very High)

Filing Sentiment

(Negative)

Form Type

Rhea-AI Filing Summary

Hecla Mining Company insider transaction: Senior Vice President, General Counsel and Secretary David C. Sienko reported two transactions in Hecla Mining common stock. On 12/17/2025, he sold 207,553 shares at a price of $19.42 per share, leaving him with 906,370 shares beneficially owned directly and through equity awards. This total includes 637,753 shares held directly, 149,589 unvested performance-based stock units, and 119,028 unvested restricted stock units. On 12/18/2025, 16,287 shares were acquired indirectly through his 401(k) plan, representing 1,366.686 units in the Hecla Mining Company Capital Accumulation Plan.

Insider Trade Summary

Net Seller: 207,553 shares ($4,030,679)

Net Sell 2 txns

Insider Sienko David C

Role Sr. VP, GC & Secretary

Sold 207,553 shs ($4.03M)

Type	Security	Shares	Price	Value
Other	Common Stock	16,287	$0.00	--
Sale	Common Stock	207,553	$19.42	$4.03M

Holdings After Transaction: Common Stock — 16,287 shares (Indirect, 401(k) Plan); Common Stock — 906,370 shares (Direct)

Footnotes (1)

Consists of 637,753 shares held directly, 149,589 unvested performance-based stock units, and 119,028 unvested restricted stock units. Held as 1,366.686 units in Mr. Sienko's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 16,287 shares.

Form 4 Insider Transactions: What Each Field Means →

12/19/2025 - 04:15 PM

SEC Form 4

FORM 4

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
or Section 30(h) of the Investment Company Act of 1940

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

Sienko David C

(Last)

(First)

(Middle)

6500 N. MINERAL DRIVE, SUITE 200

(Street)

COEUR D'ALENE

83815

(City)

(State)

(Zip)

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)
	Sr. VP, GC & Secretary

3. Date of Earliest Transaction (Month/Day/Year)
12/17/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

X	Form filed by One Reporting Person
	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	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)
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	Amount	(A) or (D)	Price		6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
Common Stock	12/17/2025		S		207,553	D	$19.42	906,370⁽¹⁾	D
Common Stock	12/18/2025		J		16,287⁽²⁾	A	$0	16,287	I	401(k) Plan

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 (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	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 (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (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: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares	8. Price of Derivative Security (Instr. 5)		10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)

Explanation of Responses:

1. Consists of 637,753 shares held directly, 149,589 unvested performance-based stock units, and 119,028 unvested restricted stock units.

2. Held as 1,366.686 units in Mr. Sienko's 401(k) account under the Hecla Mining Company Capital Accumulation Plan and estimated to be 16,287 shares.

	Tami D. Whitman, Attorney-in-Fact for David C. Sienko	12/19/2025
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 4 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

Source: View Original Filing on SEC EDGAR

FAQ

What insider transaction did Hecla Mining (HL) report for David C. Sienko?

The filing reports that David C. Sienko, Senior Vice President, General Counsel and Secretary of Hecla Mining, sold 207,553 shares of common stock on 12/17/2025 at $19.42 per share and had an additional transaction related to his 401(k) plan on 12/18/2025.

How many Hecla Mining (HL) shares did David C. Sienko sell and at what price?

On 12/17/2025, David C. Sienko sold 207,553 shares of Hecla Mining common stock at a price of $19.42 per share, reported with transaction code "S" for a sale.

How many Hecla Mining (HL) shares does David C. Sienko beneficially own after the reported transactions?

After the reported sale, David C. Sienko beneficially owns 906,370 shares directly and through equity awards, consisting of 637,753 shares held directly, 149,589 unvested performance-based stock units, and 119,028 unvested restricted stock units. He also holds 16,287 shares indirectly through his 401(k) plan.

What was the 401(k) plan transaction reported by Hecla Mining (HL) for David C. Sienko?

On 12/18/2025, a transaction coded "J" shows 16,287 shares of Hecla Mining common stock acquired indirectly in David C. Sienko's 401(k) plan, representing 1,366.686 units in the Hecla Mining Company Capital Accumulation Plan, reported at a price of $0.

What is David C. Sienko’s role at Hecla Mining (HL) in this insider filing?

In this insider ownership report, David C. Sienko is identified as an Officer of Hecla Mining, serving as Senior Vice President, General Counsel & Secretary.

Is David C. Sienko’s ownership in Hecla Mining (HL) direct or indirect?

According to the filing, David C. Sienko holds most of his interest directly, including common shares and unvested stock units, and also holds 16,287 shares indirectly through his 401(k) plan under the Hecla Mining Company Capital Accumulation Plan.