David C. Sienko

CIK: 0001481905

Transaction Breakdown

Open Market Buys (P)0 (0.0%)

High conviction signal

Open Market Sales (S)2 (15.4%)

Position reduction

Option Exercises (M)1 (7.7%)

Derivative conversions

Awards (A)3 (23.1%)

Compensation grants

Other (G, F, J, C, D, …)7 (53.8%)

Gifts, tax withholding, conversions, dispositions to the issuer and other codes

Companies & Roles (1)

HECLA MINING CO/DE/

Officer

Discretionary Trading P&L

Holdings

Transaction History (13 total)

HL
HECLA MINING CO/DE/
Jun 22, 2026
Other(J)
Indirect
17.4K shares-
HL
HECLA MINING CO/DE/
Jun 22, 2026
Award(A)
Direct
22.7K shares at avg. $15.98$363K
HL
HECLA MINING CO/DE/
Jun 22, 2026
Tax Payment(F)
Direct
24K shares at avg. $15.98$383K
HL
HECLA MINING CO/DE/
Mar 2, 2026
Exercise(M)
Direct
23.9K shares-
HL
HECLA MINING CO/DE/
Mar 2, 2026
Tax Payment(F)
Direct
7.3K shares at avg. $24.63$180K
HL
HECLA MINING CO/DE/
Dec 18, 2025
Other(J)
Indirect
16.3K shares-
HL
HECLA MINING CO/DE/
Dec 17, 2025
Sale(S)
Direct
207.6K shares at avg. $19.42$4.0M
HL
HECLA MINING CO/DE/
Jun 23, 2025
Other(J)
Indirect
15.3K shares-
HL
HECLA MINING CO/DE/
Jun 23, 2025
Award(A)
Direct
60.1K shares at avg. $5.82$350K
HL
HECLA MINING CO/DE/
Jun 23, 2025
Tax Payment(F)
Direct
13.8K shares at avg. $5.82$80K
HL
HECLA MINING CO/DE/
Feb 26, 2025
Sale(S)
Direct
21.8K shares at avg. $5.18$113K
HL
HECLA MINING CO/DE/
Feb 24, 2025
Other(J)
Indirect
15.3K shares-
HL
HECLA MINING CO/DE/
Feb 24, 2025
Award(A)
Direct
45.5K shares-

		Type	Shares	Price		Ownership
Jun 22, 2026	HL HECLA MINING CO/DE/	Other(J)	17,354	-	$0	Indirect
Jun 22, 2026	HL HECLA MINING CO/DE/	Award(A)	22,724	$15.98	$363,130	Direct
Jun 22, 2026	HL HECLA MINING CO/DE/	Tax Payment(F)	23,973	$15.98	$383,089	Direct
Mar 2, 2026	HL HECLA MINING CO/DE/	Exercise(M)	23,881	-	$0	Direct
Mar 2, 2026	HL HECLA MINING CO/DE/	Tax Payment(F)	7,294	$24.63	$179,651	Direct
Dec 18, 2025	HL HECLA MINING CO/DE/	Other(J)	16,287	-	-	Indirect
Dec 17, 2025	HL HECLA MINING CO/DE/	Sale(S)	207,553	$19.42	$4,030,679	Direct
Jun 23, 2025	HL HECLA MINING CO/DE/	Other(J)	15,258	-	-	Indirect
Jun 23, 2025	HL HECLA MINING CO/DE/	Award(A)	60,137	$5.82	$349,997	Direct
Jun 23, 2025	HL HECLA MINING CO/DE/	Tax Payment(F)	13,768	$5.82	$80,130	Direct
Feb 26, 2025	HL HECLA MINING CO/DE/	Sale(S)	21,826	$5.18	$113,059	Direct
Feb 24, 2025	HL HECLA MINING CO/DE/	Other(J)	15,258	-	-	Indirect
Feb 24, 2025	HL HECLA MINING CO/DE/	Award(A)	45,501	-	-	Direct

1-13 of 13 transactions

About Sienko David C

Sienko David C (SEC CIK 0001481905) files insider reports with the SEC as Sr. VP, GC & Secretary of HECLA MINING CO/DE/ (HL).

Signal8 holds 7 ownership filings by Sienko David C, all Form 4s, filed between Feb 26, 2025 and Jun 24, 2026. Those filings report 13 transactions, from Feb 24, 2025 to Jun 22, 2026. Signal8's Form 4 history starts in Sep 2024.

The business address on Sienko David C's filings is in COEUR D'ALENE, ID.

Recent filings by Sienko David C

Jun 22, 2026: Other transaction of HL shares (Form 4, code J).
Jun 22, 2026: Grant or award of HL shares (Form 4, code A).
Jun 22, 2026: Tax withholding of HL shares (Form 4, code F).
Mar 2, 2026: Option exercise of HL shares (Form 4, code M).
Mar 2, 2026: Tax withholding of HL shares (Form 4, code F).

Other insiders filing for HECLA MINING CO/DE/ (HL)

Malone Patrick Shay, VP - Sustainability
Absolom Stuart Maurice, Vice President & PAO
Moyes Kari G., Vice President & CHRO
Allen Kurt, Vice President - Exploration
Brown Robert Denis, VP - Corporate Development
Aguiar Rodriguez Carlos Roberto, Sr. VP & COO

How to read Form 4 transaction codes