Understand Stock

$NPKI

$14.46 -$0.13 (0.89%)

Deep Research with AI Research

Overview

$NPKI Overview Financials SEC Filings Executives News

Specialized Tools

Valuations P Insider Transactions P Congressional Trades P

Insider Transactions

Insider Transaction Summary

Gregg Piontek

819,326 shares

Net: -65,000 B/S: 0.53

MATTHEW LANIGAN

325,664 shares

Net: -770,249 B/S: 1.0

Donald Win Young

310,940 shares

Net: 0 B/S: -

DOUGLAS L WHITE

305,245 shares

Net: +730 B/S: ∞

Mary Celeste Fruge

265,213 shares

Net: 0 B/S: 1.0

JOHN C MINGE

245,384 shares

Net: 0 B/S: -

Lori Briggs

242,513 shares

Net: -35,822 B/S: -

ROSE M ROBESON

214,285 shares

Net: 0 B/S: -

Michael A Lewis

131,333 shares

Net: -8,052 B/S: -

Claudia Michel Meer

118,135 shares

Net: 0 B/S: -

JOSEPH A CUTILLO

27,597 shares

Net: 0 B/S: -

RODERICK A. LARSON

15,097 shares

Net: 0 B/S: -

Insider Name	Current Shares	Net Change (1yr)	Buy/Sell Ratio
Gregg Piontek	819,326	-65,000	0.53
MATTHEW LANIGAN	325,664	-770,249	1.0
Donald Win Young	310,940	0	-
DOUGLAS L WHITE	305,245	+730	∞
Mary Celeste Fruge	265,213	0	1.0
JOHN C MINGE	245,384	0	-
Lori Briggs	242,513	-35,822	-
ROSE M ROBESON	214,285	0	-
Michael A Lewis	131,333	-8,052	-
Claudia Michel Meer	118,135	0	-
JOSEPH A CUTILLO	27,597	0	-
RODERICK A. LARSON	15,097	0	-

Individual Transactions

April 09, 2026

Gregg Piontek

Open Market Sale

Change: -15,000

Price: $15.05

Shares: 819,326

Value: -$225,675

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gregg Piontek	Apr 10	Open Market Sale (S) Market Sale	819,326	-15,000	$15.05	-$225,675

April 01, 2026

Gregg Piontek

Open Market Sale

Change: -35,000

Price: $14.51

Shares: 834,326

Value: -$507,864

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gregg Piontek	Apr 03	Open Market Sale (S) Market Sale	834,326	-35,000	$14.51	-$507,864

March 25, 2026

Gregg Piontek

Open Market Sale

Change: -15,000

Price: $15.03

Shares: 869,326

Value: -$225,384

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gregg Piontek	Mar 26	Open Market Sale (S) Market Sale	869,326	-15,000	$15.03	-$225,384

March 16, 2026

Mary Celeste Fruge

Open Market Sale

Change: -1,000

Price: $13.56

Shares: 265,213

Value: -$13,560

Mary Celeste Fruge

Option Exercise/Conversion

Change: +1,000

Price: $4.32

Shares: 266,213

Value: +$4,320

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Mary Celeste Fruge	Mar 18	Open Market Sale (S) Market Sale	265,213	-1,000	$13.56	-$13,560
Mary Celeste Fruge	Mar 18	Option Exercise/Conversion (M) Compensation/Award	266,213	+1,000	$4.32	+$4,320

March 06, 2026

Mary Celeste Fruge

Option Exercise/Conversion

Change: +11,193

Price: $4.32

Shares: 276,406

Value: +$48,353

Mary Celeste Fruge

Open Market Sale

Change: -11,193

Price: $13.34

Shares: 265,213

Value: -$149,303

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Mary Celeste Fruge	Mar 10	Option Exercise/Conversion (M) Compensation/Award	276,406	+11,193	$4.32	+$48,353
Mary Celeste Fruge	Mar 10	Open Market Sale (S) Market Sale	265,213	-11,193	$13.34	-$149,303

March 04, 2026

Gregg Piontek

Open Market Sale

Change: -73,590

Price: $14.10

Shares: 919,326

Value: -$1,037,464

Gregg Piontek

Option Exercise/Conversion

Change: +73,590

Price: $4.32

Shares: 992,916

Value: +$317,908

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Gregg Piontek	Mar 05	Open Market Sale (S) Market Sale	919,326	-73,590	$14.10	-$1,037,464
Gregg Piontek	Mar 05	Option Exercise/Conversion (M) Compensation/Award	992,916	+73,590	$4.32	+$317,908

February 23, 2026

Michael A Lewis

Open Market Sale

Change: -2,013

Price: $14.31

Shares: 131,333

Value: -$28,796

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael A Lewis	Feb 25	Open Market Sale (S) Market Sale	131,333	-2,013	$14.31	-$28,796

November 24, 2025

Michael A Lewis

Open Market Sale

Change: -2,013

Price: $12.00

Shares: 133,346

Value: -$24,156

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael A Lewis	Nov 25	Open Market Sale (S) Market Sale	133,346	-2,013	$12.00	-$24,156

October 03, 2025

MATTHEW LANIGAN

Gift

Change: -770,249

Price: $0.00

Shares: 325,664

Value: -$0

Insider	Filing Date	Transaction	Shares	Change	Price	Value
MATTHEW LANIGAN	Oct 06	Gift (G) Non-Market Transfer	325,664	-770,249	$0.00	-$0

October 01, 2025

Lori Briggs

Open Market Sale

Change: -10,108

Price: $11.51

Shares: 242,513

Value: -$116,352

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Lori Briggs	Oct 03	Open Market Sale (S) Market Sale	242,513	-10,108	$11.51	-$116,352

September 03, 2025

MATTHEW LANIGAN

Open Market Sale

Change: -1,000

Price: $10.38

Shares: 1,095,913

Value: -$10,380

MATTHEW LANIGAN

Option Exercise/Conversion

Change: +1,000

Price: $4.32

Shares: 1,096,913

Value: +$4,320

Insider	Filing Date	Transaction	Shares	Change	Price	Value
MATTHEW LANIGAN	Sep 04	Open Market Sale (S) Market Sale	1,095,913	-1,000	$10.38	-$10,380
MATTHEW LANIGAN	Sep 04	Option Exercise/Conversion (M) Compensation/Award	1,096,913	+1,000	$4.32	+$4,320

August 25, 2025

Michael A Lewis

Open Market Sale

Change: -2,013

Price: $10.33

Shares: 135,359

Value: -$20,796

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Michael A Lewis	Aug 26	Open Market Sale (S) Market Sale	135,359	-2,013	$10.33	-$20,796

August 22, 2025

MATTHEW LANIGAN

Open Market Sale

Change: -68,896

Price: $10.34

Shares: 1,095,913

Value: -$712,536

MATTHEW LANIGAN

Option Exercise/Conversion

Change: +68,896

Price: $4.32

Shares: 1,164,809

Value: +$297,630

Insider	Filing Date	Transaction	Shares	Change	Price	Value
MATTHEW LANIGAN	Aug 26	Open Market Sale (S) Market Sale	1,095,913	-68,896	$10.34	-$712,536
MATTHEW LANIGAN	Aug 26	Option Exercise/Conversion (M) Compensation/Award	1,164,809	+68,896	$4.32	+$297,630

August 11, 2025

Lori Briggs

Open Market Sale

Change: -8,005

Price: $9.51

Shares: 252,621

Value: -$76,147

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Lori Briggs	Aug 12	Open Market Sale (S) Market Sale	252,621	-8,005	$9.51	-$76,147

July 09, 2025

Lori Briggs

Open Market Sale

Change: -8,005

Price: $8.57

Shares: 260,626

Value: -$68,583

Insider	Filing Date	Transaction	Shares	Change	Price	Value
Lori Briggs	Jul 10	Open Market Sale (S) Market Sale	260,626	-8,005	$8.57	-$68,583