Piontek Gregg

Insider

Senior Vice President and CFO

Trades at: NPKI

30D 90D 1Y

Net shares · 90d

-50.0K

0 buy · 50.0K sell

Net value · 90d

-$733.5K

$0 in · $733.5K out

Sentiment · 90d

Net selling

0% buying · 100% selling

Open-market trades · 90d

0 buy · 50.0K sell

Trading track record · all companies

Running net of open-market buys − sells across every company. Tap the line or a marker for details. ▲ buy · ▼ sell.

Transactions · 90d

Open-market Buys Sells All types

NPKI Exercise·M
Jun 1, 26

Senior Vice President and CFO

$0

40.4K sh

Own New
NPKI Exercise·M
Jun 1, 26

Senior Vice President and CFO

$0

40.4K sh

Own +5%
NPKI Other·F
Jun 1, 26

Senior Vice President and CFO

$516.4K

36.1K sh · $14.31 avg · 3 lots

Own -4%
NPKI Grant·A
May 19, 26

Senior Vice President and CFO

$0

34.6K sh

Own +4%
NPKI Sell·S
Apr 9, 26

Senior Vice President and CFO · 10b5-1

$225.7K

15.0K sh · $15.05

Own -2%
NPKI Sell·S
Apr 1, 26

Senior Vice President and CFO · 10b5-1

$507.9K

35.0K sh · $14.51

Own -4%

Date▾	Ticker	Role	Type	Shares	Own Δ	Price	Value
Jun 1, 2026	NPKI	Senior Vice President and CFO	Exercise M	40.4K	New	—	$0
Jun 1, 2026	NPKI	Senior Vice President and CFO	Exercise M	40.4K	+5%	—	$0
Jun 1, 2026	NPKI	Senior Vice President and CFO	Other F	36.1K3 lots	-4%	$14.31 avg	$516.4K
May 19, 2026	NPKI	Senior Vice President and CFO	Grant A	34.6K	+4%	—	$0
Apr 9, 2026	NPKI	Senior Vice President and CFO	Sell S	15.0K	-2%	$15.05	$225.7K
Apr 1, 2026	NPKI	Senior Vice President and CFO	Sell S	35.0K	-4%	$14.51	$507.9K

Buy Sell Non-market (grant · exercise · gift)

About Piontek Gregg

This profile aggregates every SEC Form 4 insider transaction reported by Piontek Gregg across all companies they trade. Open-market purchases (code P) and sales (code S) are the highest-signal, discretionary trades; grants (A), option exercises (M) and gifts (G) reflect compensation rather than conviction and carry no market price. Figures cover the selected period and update as new filings are ingested.