Piontek Gregg
Senior Vice President and CFO
Piontek Gregg has filed 6 SEC Form 4 filings (11 transaction rows) across 1 company, with disclosures dating back to 2026. 6 of those filings fall inside the rolling window. Most recent filing: Jun 3, 2026.
On the most recent filing, Piontek Gregg is listed as Senior Vice President and CFO at NPK International Inc. Inside the rolling window, Piontek Gregg reported no open-market purchases and 4 open-market sales totaling $2.5M in NPKI. The largest disclosed transaction in the window is a sale of 108,590 NPKI shares on Mar 4, 2026, worth $1.5M.
Companies traded
Other insiders at NPKI
Insider Buying
$0
reported purchases (SEC code P)
Insider Selling
$2.5M
reported sales (SEC code S)
Companies
1
in the rolling window
Frequently asked questions
How many SEC Form 4 filings has Piontek Gregg made?
Piontek Gregg has filed 6 SEC Form 4 filings (11 transaction rows) across 1 company since 2026.
Which companies does Piontek Gregg trade?
Piontek Gregg has filed SEC Form 4 disclosures for 1 company, including NPKI.
When was Piontek Gregg's most recent SEC Form 4 filing?
Piontek Gregg's most recent SEC Form 4 filing on Tracefour is dated Jun 3, 2026.
What is Piontek Gregg's job title?
On the most recent SEC Form 4 filings tracked by Tracefour, Piontek Gregg is listed as Senior Vice President and CFO.
What is Piontek Gregg's total buy and sell value in the current window?
Inside the rolling retention window, Piontek Gregg bought $0 and sold $2.5M based on SEC Form 4 filings.
What was Piontek Gregg's largest disclosed transaction?
The largest disclosed transaction in the current window is a sale of 108,590 NPKI shares on 2026-03-04, worth $1.5M, per SEC Form 4 filings.