NYSE · CIK 0000071829
NPKI NPK International Inc.
Insider trading from SEC Form 4. Last filing 18 d ago. Close $11.34 on Oct 9, 2026, +6% from the 52-week low and -31% from the high.
Last 90 days
Net insider value
-$40k
more sold than bought
Buys
0
$0 by 0 insiders
Sells
1
$40k by 1 insider
Insiders on file
14
with a Form 4 at this company
Price and insider trades, last year
NPKIOct 9, 2026 · close 11.34
Daily candles, adjusted for splits and dividends. Green arrows are insider buys, red are sells, sized by value. Click a marked bar to open the signal.Charts by TradingView Lightweight Charts™
Signals
Open-market buys and sells at NPK International Inc., scored.
| Score | Insider | Value | Holdings | Price context | Filed |
|---|---|---|---|---|---|
| 1Weak | Matthew James Warren Chief Accounting Officer sell | $40k 2,991 shares | -5% | - | |
| 5Weak | Lori Briggs VP & President, Ind. Solutions sell | $116k 10,108 shares | -4% | +137% from low0% from high | |
| 0Weak | Matthew Lanigan President & CEO sell | $10k 1,000 shares | -0% | +108% from low-1% from high | |
| 26Weak | Matthew Lanigan President & CEO sell | $713k 68,896 shares | -6% | +110% from low0% from high | |
| 10Weak | Michael A Lewis director sell | $21k 2,013 shares | -1% | +108% from low-1% from high | |
| 18Weak | Lori Briggs VP & President, Ind. Solutions sell | $76k 8,005 shares | -3% | +92% from low0% from high | |
| 3Weak | Lori Briggs VP & President, Ind. Solutions sell | $69k 8,005 shares | -3% | +73% from low-3% from high | |
| 3Weak | Michael A Lewis director sell | $17k 2,013 shares | -1% | +77% from low0% from high | |
| 12Weak | Lori Briggs VP & President, Ind. Solutions sell | $81k 9,704 shares | -3% | +70% from low-2% from high | |
| 28Weak | Claudia Michel Meer director buy | $32k 4,000 shares | +4% | +62% from low-7% from high | |
| 41Moderate | Joseph A Cutillo director buy | $100k 12,500 shares | - | +63% from low-4% from high |
Transactions
The last 63 rows filed, every code.
| Date | Insider | Transaction | Shares | Price | Value | Holdings after | Filed |
|---|---|---|---|---|---|---|---|
| Sep 22, 2026 | Alvin James Barton III EVP Commercial Growth & Ops. | AGrant or award Common Stock | +12,850 | $0.00 | $0 | 12,850 | 18 d ago |
| Sep 9, 2026 | Matthew James Warren Chief Accounting Officer | SOpen-market sale Common Stock10b5-1 | -2,991 | $13.41 | $40k | 51,439 | 32 d ago |
| Oct 1, 2025 | Lori Briggs VP & President, Ind. Solutions | SOpen-market sale Common Stock10b5-1 | -10,108 | $11.51 | $116k | 242,513 | Oct 3, 2025 |
| Sep 3, 2025 | Matthew Lanigan President & CEO | MOption exercise Common Stock10b5-1 | +1,000 | $4.32 | $4,320 | 1,096,913 | Sep 4, 2025 |
| Sep 3, 2025 | Matthew Lanigan President & CEO | SOpen-market sale Common Stock10b5-1 | -1,000 | $10.38 | $10k | 1,095,913 | Sep 4, 2025 |
| Sep 3, 2025 | Matthew Lanigan President & CEO | MOption exercise Non-Qualified Stock Option (right to buy)derivative10b5-1 | -1,000 | $10.38 | $10k | 0 | Sep 4, 2025 |
| Aug 25, 2025 | Michael A Lewis director | SOpen-market sale Common Stock10b5-1 | -2,013 | $10.33 | $21k | 135,359 | Aug 26, 2025 |
| Aug 22, 2025 | Matthew Lanigan President & CEO | MOption exercise Common Stock10b5-1 | +68,896 | $4.32 | $298k | 1,164,809 | Aug 26, 2025 |
| Aug 22, 2025 | Matthew Lanigan President & CEO | SOpen-market sale Common Stock10b5-1 | -68,896 | $10.34 | $713k | 1,095,913 | Aug 26, 2025 |
| Aug 22, 2025 | Matthew Lanigan President & CEO | MOption exercise Non-Qualified Stock Option (right to buy)derivative10b5-1 | -68,896 | $10.34 | $713k | 1,000 | Aug 26, 2025 |
| Aug 11, 2025 | Lori Briggs VP & President, Ind. Solutions | SOpen-market sale Common Stock10b5-1 | -8,005 | $9.51 | $76k | 252,621 | Aug 12, 2025 |
| Jul 9, 2025 | Lori Briggs VP & President, Ind. Solutions | SOpen-market sale Common Stock10b5-1 | -8,005 | $8.57 | $69k | 260,626 | Jul 10, 2025 |
| Jun 16, 2025 | Michael A Lewis director | SOpen-market sale Common Stock10b5-1 | -2,013 | $8.60 | $17k | 137,372 | Jun 17, 2025 |
| Jun 14, 2025 | Douglas L White VP, CAO & Treasurer | AGrant or award Common Stock | +730 | $6.51 | $4,753 | 305,245 | Jun 17, 2025 |
| Jun 6, 2025 | Lori Briggs VP & President, Ind. Solutions | SOpen-market sale Common Stock10b5-1 | -9,704 | $8.38 | $81k | 268,631 | Jun 10, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | MOption exercise Common Stock | +26,396 | $0.00 | $0 | 279,359 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | MOption exercise Common Stock | +108,651 | $0.00 | $0 | 1,100,134 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | MOption exercise Common Stock | +43,790 | $0.00 | $0 | 921,026 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | MOption exercise Common Stock | +17,333 | $0.00 | $0 | 305,561 | Jun 3, 2025 |
| Jun 1, 2025 | Mary Celeste Fruge VP, General Counsel | FTax withholding Common Stock | -6,797 | $8.09 | $55k | 258,592 | Jun 3, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | MOption exercise Common Stock | +24,340 | $0.00 | $0 | 303,699 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | MOption exercise Common Stock | +100,188 | $0.00 | $0 | 1,200,322 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | MOption exercise Common Stock | +14,667 | $0.00 | $0 | 320,228 | Jun 3, 2025 |
| Jun 1, 2025 | Mary Celeste Fruge VP, General Counsel | FTax withholding Common Stock | -6,820 | $8.09 | $55k | 251,772 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | FTax withholding Common Stock | -17,231 | $8.09 | $139k | 903,795 | Jun 3, 2025 |
| Jun 1, 2025 | Mary Celeste Fruge VP, General Counsel | FTax withholding Common Stock | -3,833 | $8.09 | $31k | 247,939 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | FTax withholding Common Stock | -3,122 | $8.09 | $25k | 317,106 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | FTax withholding Common Stock | -15,889 | $8.09 | $129k | 887,906 | Jun 3, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | FTax withholding Common Stock | -5,401 | $8.09 | $44k | 298,298 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | FTax withholding Common Stock | -22,232 | $8.09 | $180k | 1,178,090 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | FTax withholding Common Stock | -8,959 | $8.09 | $72k | 878,947 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | FTax withholding Common Stock | -39,423 | $8.09 | $319k | 1,138,667 | Jun 3, 2025 |
| Jun 1, 2025 | Mary Celeste Fruge VP, General Counsel | MOption exercise Common Stock | +17,247 | $0.00 | $0 | 265,186 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | FTax withholding Common Stock | -6,820 | $8.09 | $55k | 310,286 | Jun 3, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | FTax withholding Common Stock | -9,577 | $8.09 | $77k | 288,721 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | MOption exercise Common Stock | +40,379 | $0.00 | $0 | 919,326 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | FTax withholding Common Stock | -5,771 | $8.09 | $47k | 304,515 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | FTax withholding Common Stock | -42,754 | $8.09 | $346k | 1,095,913 | Jun 3, 2025 |
| Jun 1, 2025 | Mary Celeste Fruge VP, General Counsel | MOption exercise Restricted Stock Unitsderivative | -17,247 | $0.00 | $0 | 17,301 | Jun 3, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | FTax withholding Common Stock | -10,386 | $8.09 | $84k | 278,335 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | MOption exercise Restricted Stock Unitsderivative | -108,651 | $0.00 | $0 | 200,376 | Jun 3, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | MOption exercise Restricted Stock Unitsderivative | -26,396 | $0.00 | $0 | 48,680 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | MOption exercise Restricted Stock Unitsderivative | -17,333 | $0.00 | $0 | 29,333 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | MOption exercise Restricted Stock Unitsderivative | -43,790 | $0.00 | $0 | 80,758 | Jun 3, 2025 |
| Jun 1, 2025 | Lori Briggs VP & President, Ind. Solutions | MOption exercise Restricted Stock Unitsderivative | -24,340 | $0.00 | $0 | 24,340 | Jun 3, 2025 |
| Jun 1, 2025 | Douglas L White VP, CAO & Treasurer | MOption exercise Restricted Stock Unitsderivative | -14,667 | $0.00 | $0 | 14,666 | Jun 3, 2025 |
| Jun 1, 2025 | Matthew Lanigan President & CEO | MOption exercise Restricted Stock Unitsderivative | -100,188 | $0.00 | $0 | 100,188 | Jun 3, 2025 |
| Jun 1, 2025 | Gregg Piontek Senior Vice President and CFO | MOption exercise Restricted Stock Unitsderivative | -40,379 | $0.00 | $0 | 40,379 | Jun 3, 2025 |
| May 19, 2025 | Claudia Michel Meer director | POpen-market purchase Common Stock | +4,000 | $7.92 | $32k | 118,135 | May 20, 2025 |
| May 15, 2025 | Roderick A. Larson director | AGrant or award Common Stock | +15,097 | $0.00 | $0 | 15,097 | May 19, 2025 |
| May 15, 2025 | Donald Win Young director | AGrant or award Common Stock | +15,097 | $0.00 | $0 | 310,940 | May 19, 2025 |
| May 15, 2025 | Rose M Robeson director | AGrant or award Common Stock | +18,720 | $0.00 | $0 | 214,285 | May 19, 2025 |
| May 15, 2025 | Claudia Michel Meer director | AGrant or award Common Stock | +15,097 | $0.00 | $0 | 114,135 | May 19, 2025 |
| May 15, 2025 | John C Minge director | AGrant or award Common Stock | +15,097 | $0.00 | $0 | 245,384 | May 19, 2025 |
| May 15, 2025 | Michael A Lewis director | AGrant or award Common Stock | +15,097 | $0.00 | $0 | 139,385 | May 19, 2025 |
| May 15, 2025 | Joseph A Cutillo director | AGrant or award Common Stock | +15,097 | $0.00 | $0 | 27,597 | May 19, 2025 |
| May 14, 2025 | Lori Briggs VP & President, Ind. Solutions | AGrant or award Common Stock | +51,667 | $0.00 | $0 | 252,963 | May 16, 2025 |
| May 14, 2025 | Mary Celeste Fruge VP, General Counsel | AGrant or award Common Stock | +39,783 | $0.00 | $0 | 265,389 | May 16, 2025 |
| May 14, 2025 | Matthew Lanigan President & CEO | AGrant or award Common Stock | +212,667 | $0.00 | $0 | 991,483 | May 16, 2025 |
| May 14, 2025 | Gregg Piontek Senior Vice President and CFO | AGrant or award Common Stock | +85,706 | $0.00 | $0 | 877,236 | May 16, 2025 |
| May 14, 2025 | Douglas L White VP, CAO & Treasurer | AGrant or award Common Stock | +29,900 | $0.00 | $0 | 288,228 | May 16, 2025 |
| May 8, 2025 | Joseph A Cutillo director | POpen-market purchase Common Stock | +12,500 | $8.00 | $100k | 12,500 | May 8, 2025 |
| Dec 13, 2024 | Douglas L White VP, CAO & Treasurer | AGrant or award Common Stock | +722 | $6.58 | $4,750 | 258,328 | Dec 17, 2024 |
Insiders
Everyone who has filed a Form 4 here.
- Alvin James Barton IIIEVP Commercial Growth & Ops.
- Lori BriggsVP & President, Ind. Solutions
- Joseph A Cutilloceo, officer, director
- Mary Celeste FrugeVP, General Counsel
- Matthew LaniganPresident & CEO
- Roderick A. Larsonceo, president, officer, director
- Michael A Lewisdirector
- John C Mingedirector
- Claudia Michel Meerdirector
- Gregg PiontekSenior Vice President and CFO
- Rose M Robesondirector
- Douglas L WhiteVP, CAO & Treasurer
- Matthew James WarrenChief Accounting Officer
- Donald Win Youngdirector
Not investment advice. Scores and forward returns are decision support built from public SEC filings and past prices; they describe what happened after comparable filings, not what will happen after this one. Do your own research and size your risk.