NPK International Inc. (NPKI) Insider Trading

Last 12 months

Insiders sold $5.63M and bought nothing on the open market.

All of the selling was scheduled in advance under 10b5-1 plans. The last open-market buy by an executive or director was in May 2025.

Net open-market

−$5.63M

0 buys · 15 sales

Under a 10b5-1 plan

100%

of the value sold

Insiders who bought / sold

0 / 7

executives and directors

Last open-market buy

May 2025

May 19, 2025

Get an email when NPKI's executives or directors buy, or make a large sale outside a plan.

Trades · last 2 years

Date	Insider	Trade	Shares	Price	Value	Of their stake	Filing
Sep 9	Matthew James Warren Chief Accounting Officer	Sold10b5-1 plan	2,991	$13.41	$40k	5.5%	Form 4
Aug 27	Rose M Robeson Director	Sold10b5-1 plan	10,000	$13.49	$135k	4.4%	Form 4
Aug 17	Michael A Lewis Director	Sold10b5-1 plan	2,013	$14.26	$29k	1.5%	Form 4
Jun 8	Lori Briggs VP & President, Ind. Solutions	Sold10b5-1 plan	8,325	$14.75	$123k	3.3%	Form 4
Jun 3	Matthew Lanigan President & CEO	Sold10b5-1 plan	167,375	$14.43	$2.42M	14%	Form 4
Jun 2	Lori Briggs VP & President, Ind. Solutions	Sold10b5-1 plan	10,446	$14.58	$152k	3.9%	Form 4
May 15	Michael A Lewis Director	Sold10b5-1 plan	2,013	$15.30	$31k	1.5%	Form 4
Apr 9	Gregg Piontek Senior Vice President and CFO	Sold10b5-1 plan	15,000	$15.05	$226k	1.7%	Form 4
Apr 1	Gregg Piontek Senior Vice President and CFO	Sold10b5-1 plan	35,000	$14.51	$508k	3.7%	Form 4
Mar 25	Gregg Piontek Senior Vice President and CFO	Sold10b5-1 plan	15,000	$15.03	$225k	1.6%	Form 4
Mar 16	Mary Celeste Fruge VP, General Counsel	Sold10b5-1 plan	1,000	$13.56	$14k	0.4%	Form 4
Mar 6	Mary Celeste Fruge VP, General Counsel	Sold10b5-1 plan	11,193	$13.34	$149k	4.0%	Form 4
Mar 4	Gregg Piontek Senior Vice President and CFO	Sold10b5-1 plan 2 parts	108,590	$14.07 average	$1.53M	10%	Form 4
Feb 23	Michael A Lewis Director	Sold10b5-1 plan	2,013	$14.31	$29k	1.5%	Form 4
Nov 24, 2025	Michael A Lewis Director	Sold10b5-1 plan	2,013	$12.00	$24k	1.5%	Form 4
Oct 1, 2025	Lori Briggs VP & President, Ind. Solutions	Sold10b5-1 plan	10,108	$11.51	$116k	4.0%	Form 4
Sep 3, 2025	Matthew Lanigan President & CEO	Sold10b5-1 plan	1,000	$10.38	$10k	<0.1%	Form 4
Aug 25, 2025	Michael A Lewis Director	Sold10b5-1 plan	2,013	$10.33	$21k	1.5%	Form 4
Aug 22, 2025	Matthew Lanigan President & CEO	Sold10b5-1 plan	68,896	$10.34	$712k	5.9%	Form 4
Aug 11, 2025	Lori Briggs VP & President, Ind. Solutions	Sold10b5-1 plan	8,005	$9.51	$76k	3.1%	Form 4
Jul 9, 2025	Lori Briggs VP & President, Ind. Solutions	Sold10b5-1 plan	8,005	$8.57	$69k	3.0%	Form 4
Jun 16, 2025	Michael A Lewis Director	Sold10b5-1 plan	2,013	$8.60	$17k	1.4%	Form 4
Jun 6, 2025	Lori Briggs VP & President, Ind. Solutions	Sold10b5-1 plan	9,704	$8.38	$81k	3.5%	Form 4
May 19, 2025	Claudia Michel Meer Director	Bought	4,000	$7.92	$32k	3.5%	Form 4
May 8, 2025	Joseph A Cutillo Director	Bought	12,500	$8.00	$100k	New	Form 4
Mar 5, 2025	John C Minge Director	Bought	10,000	$5.38	$54k	4.5%	Form 4

Sep 910b5-1 plan
Matthew James Warren
Chief Accounting Officer · sold 2,991 at $13.41
$40k
5.5% of stake
Aug 2710b5-1 plan
Rose M Robeson
Director · sold 10,000 at $13.49
$135k
4.4% of stake
Aug 1710b5-1 plan
Michael A Lewis
Director · sold 2,013 at $14.26
$29k
1.5% of stake
Jun 810b5-1 plan
Lori Briggs
VP & President, Ind. Solutions · sold 8,325 at $14.75
$123k
3.3% of stake
Jun 310b5-1 plan
Matthew Lanigan
President & CEO · sold 167,375 at $14.43
$2.42M
14% of stake
Jun 210b5-1 plan
Lori Briggs
VP & President, Ind. Solutions · sold 10,446 at $14.58
$152k
3.9% of stake
May 1510b5-1 plan
Michael A Lewis
Director · sold 2,013 at $15.30
$31k
1.5% of stake
Apr 910b5-1 plan
Gregg Piontek
Senior Vice President and CFO · sold 15,000 at $15.05
$226k
1.7% of stake
Apr 110b5-1 plan
Gregg Piontek
Senior Vice President and CFO · sold 35,000 at $14.51
$508k
3.7% of stake
Mar 2510b5-1 plan
Gregg Piontek
Senior Vice President and CFO · sold 15,000 at $15.03
$225k
1.6% of stake
Mar 1610b5-1 plan
Mary Celeste Fruge
VP, General Counsel · sold 1,000 at $13.56
$14k
0.4% of stake
Mar 610b5-1 plan
Mary Celeste Fruge
VP, General Counsel · sold 11,193 at $13.34
$149k
4.0% of stake
Mar 410b5-1 plan
Gregg Piontek
Senior Vice President and CFO · sold 108,590 at avg $14.07
$1.53M
10% of stake
Feb 2310b5-1 plan
Michael A Lewis
Director · sold 2,013 at $14.31
$29k
1.5% of stake
Nov 24, 202510b5-1 plan
Michael A Lewis
Director · sold 2,013 at $12.00
$24k
1.5% of stake
Oct 1, 202510b5-1 plan
Lori Briggs
VP & President, Ind. Solutions · sold 10,108 at $11.51
$116k
4.0% of stake
Sep 3, 202510b5-1 plan
Matthew Lanigan
President & CEO · sold 1,000 at $10.38
$10k
<0.1% of stake
Aug 25, 202510b5-1 plan
Michael A Lewis
Director · sold 2,013 at $10.33
$21k
1.5% of stake
Aug 22, 202510b5-1 plan
Matthew Lanigan
President & CEO · sold 68,896 at $10.34
$712k
5.9% of stake
Aug 11, 202510b5-1 plan
Lori Briggs
VP & President, Ind. Solutions · sold 8,005 at $9.51
$76k
3.1% of stake
Jul 9, 202510b5-1 plan
Lori Briggs
VP & President, Ind. Solutions · sold 8,005 at $8.57
$69k
3.0% of stake
Jun 16, 202510b5-1 plan
Michael A Lewis
Director · sold 2,013 at $8.60
$17k
1.4% of stake
Jun 6, 202510b5-1 plan
Lori Briggs
VP & President, Ind. Solutions · sold 9,704 at $8.38
$81k
3.5% of stake
May 19, 2025
Claudia Michel Meer
Director · bought 4,000 at $7.92
$32k
3.5% of stake
May 8, 2025
Joseph A Cutillo
Director · bought 12,500 at $8.00
$100k
New position
Mar 5, 2025
John C Minge
Director · bought 10,000 at $5.38
$54k
4.5% of stake

How to read this. Insiders sell for many reasons: taxes, diversifying, a house. Open-market buys are rarer and say more. A 10b5-1 plan is a trading schedule set up months in advance, so those sales were not timed on news. Large holders (funds and 10% owners) are listed under Everything but not counted as insiders. If you own or watch NPKI, we send a push when an executive buys or makes a large sale outside a plan.

Source: SEC Form 4 filings, filed within two business days of each trade and checked for new ones every hour.

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Spot a number that looks wrong? Check it in NPKI's SEC filings or

Download this analysis as a PDF (Pro)

Data sourced from SEC EDGAR filings and third-party price providers. Scores, valuations, and metrics are algorithmic estimates. This is not investment advice. See our Terms and Methodology.

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