NPK International Inc.
Last updated September 27, 2026
Organization details
- Legal name
- NPK International Inc.
- Ownership
- Public
- Status
- Active
- Headquarters country
- United States
- Ticker symbol
- NPKI
- Primary stock exchange
- NYSE
Identifiers
- SEC CIK
- 0000071829
Board of directors
-
Claudia Michel Meer · DirectorSince 2023
-
Donald Win Young · DirectorSince 2023
-
John C. Minge · DirectorSince 2023
-
Joseph A. Cutillo · DirectorSince 2025
-
Matthew Lanigan · Director · President & CEOSince 2023
-
Michael A. Lewis · DirectorSince 2023
-
Roderick A. Larson · DirectorSince 2023
-
Rose M. Robeson · DirectorSince 2023
Chief executives
Matthew Lanigan
· President & CEO
Dates unknown
Board connections
3 of this board's directors also sit on 4 other boards.
- via Roderick A. Larson
- via Michael A. Lewis
- via Rose M. Robeson
- via Rose M. Robeson
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Mar 5, 2025 | John C. Minge Director | Open-market purchase | +10,000 | $5.38 | $53,800 |
| Dec 13, 2024 | WHITE DOUGLAS L Officer (VP, CAO & Treasurer) | Grant or award | +722 | $6.58 | $4,751 |
| Sep 1, 2024 | Matthew Lanigan Director, Officer (President & CEO) | Option exercise | +33,333 | — | — |
| Sep 1, 2024 | Briggs Lori Officer (VP & President, Ind. Solutions) | Option exercise | +16,666 | — | — |
| Sep 1, 2024 | Matthew Lanigan Director, Officer (President & CEO) | Shares withheld for tax | −13,116 | $8.23 | $107,945 |
| Sep 1, 2024 | Briggs Lori Officer (VP & President, Ind. Solutions) | Shares withheld for tax | −6,558 | $8.23 | $53,972 |
| Jun 14, 2024 | WHITE DOUGLAS L Officer (VP, CAO & Treasurer) | Grant or award | +841 | $5.98 | $5,029 |
| Jun 14, 2024 | Briggs Lori Officer (VP & President, Ind. Solutions) | Grant or award | +1,378 | $5.98 | $8,240 |
| Jun 1, 2024 | Piontek Gregg Officer (Senior Vice President and CFO) | Option exercise | +51,181 | — | — |
| Jun 1, 2024 | PATERSON DAVID A Officer (VP & President, Fluids Systems), VP & President, Fluids Systems | Option exercise | +35,788 | — | — |
| Jun 1, 2024 | WHITE DOUGLAS L Officer (VP, CAO & Treasurer) | Option exercise | +18,666 | — | — |
| Jun 1, 2024 | Matthew Lanigan Director, Officer (President & CEO) | Option exercise | +37,090 | — | — |
| Jun 1, 2024 | Fruge Mary Celeste Officer (VP, General Counsel) | Option exercise | +17,274 | — | — |
| Jun 1, 2024 | Briggs Lori Officer (VP & President, Ind. Solutions) | Option exercise | +16,000 | — | — |
| Jun 1, 2024 | Piontek Gregg Officer (Senior Vice President and CFO) | Option exercise | +43,790 | — | — |
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