Insider Trading

Gregg Piontek Net Worth

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Last Updated: 2 days, 19 hours ago

Gregg Piontek has an estimated net worth of at least $13.7 million*, as of March 11, 2026. They own 884,326 shares of NPKI stock. They have sold 108,590 shares of NPKI stock since 2021, for an estimated $1.5 million.

Gregg Piontek $NPKI SEC Form 4 Insider Trading

Gregg Piontek has filed a total of 2 insider trades in $NPKI since 2021. Their most recent trade was a sale of 73,590 shares, made on Mar 04, 2026. Their largest trade was a sale of 73,590 shares, made on Mar 04, 2026. We estimate that they now own 884,326 shares of $NPKI, worth an estimated $12.2 million.



Insider Trading at $NPKI

There have been a total of 16 insider trades reported at $NPKI since 2021, with 26,500 shares purchased and 233,553 shares sold. The most active insider traders in $NPKI stock have been Lori Briggs, Gregg Piontek, and Matthew Lanigan. The most recent trade was a sale of 11,193 shares reported by Mary Celeste Fruge (VP, General Counsel), made on Mar 06, 2026.



History of Insider Stock Trades by Gregg Piontek

Company Ticker Purchase / Sale Shares Date Disclosed (EST)
NPKI logo NPKI Sale 73,590 Mar 04, 2026 March 5, 2026, 6:50 p.m.
NPKI logo NPKI Sale 35,000 Mar 04, 2026 March 5, 2026, 6:50 p.m.
NR logo NR Purchase 10,000 Aug 05, 2022 Aug. 9, 2022, 1:26 p.m.




$NPKI Executives and Stock Owners with Insider Trades



*This is only based off of information found in SEC filings, and may not reflect actual net worth. There may also be inaccuracies due to privately holdings filing errors, parsing errors, accidental double-counting of shares, incorrect classification of indirectly owned shares, sales prior to dataset start date, or any other number of issues.