NPK International Inc.

By person

25 insiders · 102 transactions

4.5×

Matthew S. Lanigan holds only 4.5 times base salary in stock. $3.42M of shares against $754.00K in salary for 2025.

Salary from the company's own proxy. The shares are what Matthew S. Lanigan last reported holding, valued at $13.41, the price Common Stock was last bought or sold at on the open market here, on 9 Sep 2026.

Insider

Role

Bought

Sold

Net

Holding

Of company

Worth

Change

Howes Paul L

President & CEO

$228.49K (5)

$5.53M (8) scheduled

−$5.30M

1,261,325

1.49%

$16.92M

+114.2%

LANIGAN MATTHEW

President & CEO

$48.43K (1)

$3.68M (6) scheduled

−$3.63M

254,699

0.3000%

$3.42M

+409.4%

Piontek Gregg

Senior Vice President and CFO

$103.59K (5)

$3.30M (8) scheduled

−$3.20M

978,182

1.15%

$13.12M

+387.6%

Smith Bruce Campbell

Exec Vice President & Chief

—

$1.66M (12) scheduled

−$1.66M

397,267

0.4679%

$5.33M

+68.5%

AIROLA MARK J

Sr Vice Pres, General Counsel

—

$1.32M (1) scheduled

−$1.32M

387,868

0.4568%

$5.20M

+29.9%

Young Donald Win

Director

$680.05K (8)

—

+$680.05K

310,940

0.3662%

$4.17M

—

Briggs Lori

VP & President, Ind. Solutions

—

$617.47K (6) scheduled

−$617.47K

247,165

0.2911%

$3.31M

+848.5%

Anderson David C

Director

—

$467.81K (3)

−$467.81K

150,841

0.1776%

$2.02M

−16.7%

FINLEY G STEPHEN

Director

—

$208.88K (8)

−$208.88K

275,484

0.3244%

$3.69M

+52.7%

MINGE JOHN C

Director

$181.80K (7)

—

+$181.80K

253,942

0.2991%

$3.41M

—

Fruge Mary Celeste

VP, General Counsel

—

$162.86K (2) scheduled

−$162.86K

284,641

0.3352%

$3.82M

+38.2%

ROBESON ROSE M

Director

—

$134.92K (1) scheduled

−$134.92K

215,147

0.2534%

$2.89M

—

Lewis Michael A

Director

$20.90K (1)

$150.57K (6) scheduled

−$129.67K

135,865

0.1600%

$1.82M

—

Meer Claudia Michel

Director

$100.88K (5)

—

+$100.88K

126,693

0.1492%

$1.70M

—

CUTILLO JOSEPH A

Director

$100.00K (1)

—

+$100.00K

36,155

0.0426%

$484.88K

—

Earle Edward Chipman

VP, General Counsel, CAO

$43.90K (4)

—

+$43.90K

230,265

0.2712%

$3.09M

—

Warren Matthew James

Chief Accounting Officer

—

$40.11K (1) scheduled

−$40.11K

51,439

0.0606%

$689.86K

−5.5%

WHITE DOUGLAS L

VP, CAO & Treasurer

—

$37.27K (1)

−$37.27K

305,245

0.3595%

$4.09M

+1,880%

PATERSON DAVID A

VP & President, Fluids Systems

—

386,245

0.4549%

$5.18M

—

BEST ANTHONY JAMES

Director

—

237,809

0.2801%

$3.19M

+267.4%

McFarland James

Director

—

228,748

0.2694%

$3.07M

+0.4%

WARREN GARY L

Director

—

226,706

0.2670%

$3.04M

+17.5%

VOLLANDS PHILLIP T

Vice President and President

—

70,866

0.0835%

$950.40K

+29.8%

LARSON RODERICK A.

Director

—

23,655

0.0279%

$317.24K

—

Pederson Kristen J.

Director

—

6,614

0.0078%

$88.70K

—

Individual transactions

Insider

Date

Role

Action

Price

Amount

Warren Matthew James

9 Sep 2026

Chief Accounting Officer

Sold on a plan

2,991

$13.41

$40.11K

ROBESON ROSE M

27 Aug 2026

Director

Sold on a plan

10,000

$13.49

$134.92K

Lewis Michael A

17 Aug 2026

Director

Sold on a plan

2,013

$14.26

$28.71K

Briggs Lori

8 Jun 2026

VP & President, Ind. Solutions

Sold on a plan

8,325

$14.75

$122.79K

LANIGAN MATTHEW

3 Jun 2026

President & CEO

Sold on a plan

167,375

$14.43

$2.42M

Briggs Lori

2 Jun 2026

VP & President, Ind. Solutions

Sold on a plan

10,446

$14.58

$152.28K

Lewis Michael A

15 May 2026

Director

Sold on a plan

2,013

$15.30

$30.80K

Piontek Gregg

9 Apr 2026

Senior Vice President and CFO

Sold on a plan

15,000

$15.05

$225.68K

Piontek Gregg

1 Apr 2026

Senior Vice President and CFO

Sold on a plan

35,000

$14.51

$507.86K

Piontek Gregg

25 Mar 2026

Senior Vice President and CFO

Sold on a plan

15,000

$15.03

$225.38K

Lewis Michael A

23 Feb 2026

Director

Sold on a plan

2,013

$14.31

$28.80K

Lewis Michael A

24 Nov 2025

Director

Sold on a plan

2,013

$12.00

$24.16K

Briggs Lori

1 Oct 2025

VP & President, Ind. Solutions

Sold on a plan

10,108

$11.51

$116.35K

Lewis Michael A

25 Aug 2025

Director

Sold on a plan

2,013

$10.33

$20.80K

Briggs Lori

11 Aug 2025

VP & President, Ind. Solutions

Sold on a plan

8,005

$9.51

$76.15K

Briggs Lori

9 Jul 2025

VP & President, Ind. Solutions

Sold on a plan

8,005

$8.57

$68.58K

Lewis Michael A

16 Jun 2025

Director

Sold on a plan

2,013

$8.60

$17.32K

Briggs Lori

6 Jun 2025

VP & President, Ind. Solutions

Sold on a plan

9,704

$8.38

$81.32K

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