Sienko David C
Sr. VP, GC & Secretary
Sienko David C has filed 3 SEC Form 4 filings (7 transaction rows) across 1 company, with disclosures dating back to 2025. 3 of those filings fall inside the rolling window. Most recent filing: Jun 25, 2026.
On the most recent filing, Sienko David C is listed as Sr. VP, GC & Secretary at HECLA MINING CO. Inside the rolling window, Sienko David C reported no open-market purchases and 1 open-market sale totaling $4.0M in HL.
Companies traded
Other insiders at HL
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$4.0M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Sienko David C made?
Sienko David C has filed 3 SEC Form 4 filings (7 transaction rows) across 1 company since 2025.
Which companies does Sienko David C trade?
Sienko David C has filed SEC Form 4 disclosures for 1 company, including HL.
When was Sienko David C's most recent SEC Form 4 filing?
Sienko David C's most recent SEC Form 4 filing on Tracefour is dated Jun 25, 2026.
What is Sienko David C's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Sienko David C is listed as Sr. VP, GC & Secretary.
What is Sienko David C's total buy and sell value in the current window?
Inside the rolling retention window, Sienko David C bought $0 and sold $4.0M based on SEC Form 4 filings.
What was Sienko David C's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 207,553 HL shares on 2025-12-17, worth $4.0M, per SEC Form 4 filings.