NPK International Inc. (NPKI) · Insider trading
What NPK International's directors, officers and largest holders bought and sold themselves, from the Form 4 each of them files with the SEC within two business days of a trade. Open-market purchases and sales first: those are the trades somebody chose to make at the market price.
Bought, 12 months
$0
0 insiders, 0 trades
Sold, 12 months
$5.63M
7 insiders, 100% under a plan
Net, 12 months
−$5.63M
bought less sold
Latest filing
2026-09-24
filings read to 2026-10-19
Who traded, two years
| Insider | Bought | Sold | Trades | Last trade | Holds after |
|---|---|---|---|---|---|
| Lanigan MatthewDirector, President & CEO | – | $3.14M | 3 | 2026-06-03 | 254,699 |
| Piontek GreggSenior Vice President and CFO | – | $2.49M | 5 | 2026-04-09 | 819,326 |
| Briggs LoriVP & President, Ind. Solutions | – | $617,489 | 6 | 2026-06-08 | 247,165 |
| Fruge Mary CelesteVP, General Counsel | – | $162,875 | 2 | 2026-03-16 | 265,213 |
| Lewis Michael ADirector | – | $150,572 | 6 | 2026-08-17 | 135,865 |
| Robeson Rose MDirector | – | $134,900 | 1 | 2026-08-27 | 215,147 |
| Cutillo Joseph ADirector | $100,000 | – | 1 | 2025-05-08 | 12,500 |
| Minge John CDirector | $53,800 | – | 1 | 2025-03-05 | 230,287 |
| Warren Matthew JamesChief Accounting Officer | – | $40,109 | 1 | 2026-09-09 | 51,439 |
| Meer Claudia MichelDirector | $31,680 | – | 1 | 2025-05-19 | 118,135 |
Open-market purchases and sales
Newest first. “Plan” marks a trade made under a 10b5-1 plan set up in advance.
| Date | Insider | Trade | Shares | Price | Value | Holds after | Filing |
|---|---|---|---|---|---|---|---|
| 2026-09-09 | Warren Matthew JamesChief Accounting Officer | Saleplan | 2,991 | 13.41 | $40,109 | 51,439 | Form 4 |
| 2026-08-27 | Robeson Rose MDirector | Saleplan | 10,000 | 13.49 | $134,900 | 215,147 | Form 4 |
| 2026-08-17 | Lewis Michael ADirector | Saleplan | 2,013 | 14.26 | $28,705 | 135,865 | Form 4 |
| 2026-06-08 | Briggs LoriVP & President, Ind. Solutions | Saleplan | 8,325 | 14.75 | $122,794 | 247,165 | Form 4 |
| 2026-06-03 | Lanigan MatthewDirector, President & CEO | Saleplan | 167,375 | 14.43 | $2.42M | 254,699 | Form 4 |
| 2026-06-02 | Briggs LoriVP & President, Ind. Solutions | Saleplan | 10,446 | 14.58 | $152,303 | 255,490 | Form 4 |
| 2026-05-15 | Lewis Michael ADirector | Saleplan | 2,013 | 15.30 | $30,799 | 129,320 | Form 4 |
| 2026-04-09 | Piontek GreggSenior Vice President and CFO | Saleplan | 15,000 | 15.05 | $225,750 | 819,326 | Form 4 |
| 2026-04-01 | Piontek GreggSenior Vice President and CFO | Saleplan | 35,000 | 14.51 | $507,850 | 834,326 | Form 4 |
| 2026-03-25 | Piontek GreggSenior Vice President and CFO | Saleplan | 15,000 | 15.03 | $225,450 | 869,326 | Form 4 |
| 2026-03-16 | Fruge Mary CelesteVP, General Counsel | Saleplan | 1,000 | 13.56 | $13,560 | 265,213 | Form 4 |
| 2026-03-06 | Fruge Mary CelesteVP, General Counsel | Saleplan | 11,193 | 13.34 | $149,315 | 265,213 | Form 4 |
| 2026-03-04 | Piontek GreggSenior Vice President and CFO | Saleplan | 73,590 | 14.10 | $1.04M | 919,326 | Form 4 |
| 2026-03-04 | Piontek GreggSenior Vice President and CFO | Saleplan | 35,000 | 14.02 | $490,700 | 884,326 | Form 4 |
| 2026-02-23 | Lewis Michael ADirector | Saleplan | 2,013 | 14.31 | $28,806 | 131,333 | Form 4 |
| 2025-11-24 | Lewis Michael ADirector | Saleplan | 2,013 | 12.00 | $24,156 | 133,346 | Form 4 |
| 2025-10-01 | Briggs LoriVP & President, Ind. Solutions | Saleplan | 10,108 | 11.51 | $116,343 | 242,513 | Form 4 |
| 2025-09-03 | Lanigan MatthewDirector, President & CEO | Saleplan | 1,000 | 10.38 | $10,380 | 1,095,913 | Form 4 |
| 2025-08-25 | Lewis Michael ADirector | Saleplan | 2,013 | 10.33 | $20,794 | 135,359 | Form 4 |
| 2025-08-22 | Lanigan MatthewDirector, President & CEO | Saleplan | 68,896 | 10.34 | $712,385 | 1,095,913 | Form 4 |
| 2025-08-11 | Briggs LoriVP & President, Ind. Solutions | Saleplan | 8,005 | 9.51 | $76,128 | 252,621 | Form 4 |
| 2025-07-09 | Briggs LoriVP & President, Ind. Solutions | Saleplan | 8,005 | 8.57 | $68,603 | 260,626 | Form 4 |
| 2025-06-16 | Lewis Michael ADirector | Saleplan | 2,013 | 8.60 | $17,312 | 137,372 | Form 4 |
| 2025-06-06 | Briggs LoriVP & President, Ind. Solutions | Saleplan | 9,704 | 8.38 | $81,320 | 268,631 | Form 4 |
| 2025-05-19 | Meer Claudia MichelDirector | Buy | 4,000 | 7.92 | $31,680 | 118,135 | Form 4 |
| 2025-05-08 | Cutillo Joseph ADirector | Buy | 12,500 | 8.00 | $100,000 | 12,500 | Form 4 |
| 2025-03-05 | Minge John CDirector | Buy | 10,000 | 5.38 | $53,800 | 230,287 | Form 4 |
Grants, exercises and other transactions
Pay, tax and paperwork rather than a choice to trade at the market price. Two years.
27 × shares withheld for tax26 × grant or award18 × option exercise1 × gift
Show them
| Date | Insider | What | Shares | Price | Holds after | Filing |
|---|---|---|---|---|---|---|
| 2026-09-22 | Barton III Alvin JamesEVP Commercial Growth & Ops. | Grant or award A | +12,850 | – | 12,850 | Form 4 |
| 2026-07-28 | Pederson Kristen J.Director | Grant or award A | +6,614 | – | 6,614 | Form 4 |
| 2026-06-01 | Piontek GreggSenior Vice President and CFO | Shares withheld for tax F | −8,959 | 14.31 | 844,933 | Form 4 |
| 2026-06-01 | Piontek GreggSenior Vice President and CFO | Shares withheld for tax F | −15,889 | 14.31 | 829,044 | Form 4 |
| 2026-06-01 | Piontek GreggSenior Vice President and CFO | Shares withheld for tax F | −11,241 | 14.31 | 817,803 | Form 4 |
| 2026-06-01 | Piontek GreggSenior Vice President and CFO | Option exercise M | +40,379 | – | 858,182 | Form 4 |
| 2026-06-01 | Lanigan MatthewDirector, President & CEO | Shares withheld for tax F | −22,232 | 14.31 | 389,203 | Form 4 |
| 2026-06-01 | Lanigan MatthewDirector, President & CEO | Shares withheld for tax F | −27,894 | 14.31 | 361,309 | Form 4 |
| 2026-06-01 | Lanigan MatthewDirector, President & CEO | Shares withheld for tax F | −39,423 | 14.31 | 321,886 | Form 4 |
| 2026-06-01 | Lanigan MatthewDirector, President & CEO | Option exercise M | +100,188 | – | 422,074 | Form 4 |
| 2026-06-01 | Briggs LoriVP & President, Ind. Solutions | Shares withheld for tax F | −5,401 | 14.31 | 257,950 | Form 4 |
| 2026-06-01 | Briggs LoriVP & President, Ind. Solutions | Shares withheld for tax F | −9,577 | 14.31 | 248,373 | Form 4 |
| 2026-06-01 | Briggs LoriVP & President, Ind. Solutions | Shares withheld for tax F | −6,777 | 14.31 | 241,596 | Form 4 |
| 2026-06-01 | Briggs LoriVP & President, Ind. Solutions | Option exercise M | +24,340 | – | 265,936 | Form 4 |
| 2026-06-01 | Fruge Mary CelesteVP, General Counsel | Shares withheld for tax F | −3,833 | 14.31 | 279,382 | Form 4 |
| 2026-06-01 | Fruge Mary CelesteVP, General Counsel | Shares withheld for tax F | −5,218 | 14.31 | 274,164 | Form 4 |
| 2026-06-01 | Fruge Mary CelesteVP, General Counsel | Shares withheld for tax F | −6,797 | 14.31 | 267,367 | Form 4 |
| 2026-06-01 | Fruge Mary CelesteVP, General Counsel | Option exercise M | +17,274 | – | 284,641 | Form 4 |
| 2026-05-20 | Robeson Rose MDirector | Grant or award A | +10,862 | – | 225,147 | Form 4 |
| 2026-05-20 | Lewis Michael ADirector | Grant or award A | +8,558 | – | 137,878 | Form 4 |
| 2026-05-20 | Larson Roderick A.Director | Grant or award A | +8,558 | – | 23,655 | Form 4 |
| 2026-05-20 | Cutillo Joseph ADirector | Grant or award A | +8,558 | – | 36,155 | Form 4 |
| 2026-05-20 | Minge John CDirector | Grant or award A | +8,558 | – | 253,942 | Form 4 |
| 2026-05-20 | Meer Claudia MichelDirector | Grant or award A | +8,558 | – | 126,693 | Form 4 |
| 2026-05-19 | Piontek GreggSenior Vice President and CFO | Grant or award A | +34,566 | – | 853,892 | Form 4 |
| 2026-05-19 | Lanigan MatthewDirector, President & CEO | Grant or award A | +85,771 | – | 411,435 | Form 4 |
| 2026-05-19 | Briggs LoriVP & President, Ind. Solutions | Grant or award A | +20,838 | – | 263,351 | Form 4 |
| 2026-05-19 | Fruge Mary CelesteVP, General Counsel | Grant or award A | +18,002 | – | 283,215 | Form 4 |
| 2026-03-16 | Fruge Mary CelesteVP, General Counsel | Option exercise M | +1,000 | 4.32 | 266,213 | Form 4 |
| 2026-03-06 | Fruge Mary CelesteVP, General Counsel | Option exercise M | +11,193 | 4.32 | 276,406 | Form 4 |
| 2026-03-04 | Piontek GreggSenior Vice President and CFO | Option exercise M | +73,590 | 4.32 | 992,916 | Form 4 |
| 2025-10-03 | Lanigan MatthewDirector, President & CEO | Gift G | −770,249 | – | 325,664 | Form 4 |
| 2025-09-03 | Lanigan MatthewDirector, President & CEO | Option exercise M | +1,000 | 4.32 | 1,096,913 | Form 4 |
| 2025-08-22 | Lanigan MatthewDirector, President & CEO | Option exercise M | +68,896 | 4.32 | 1,164,809 | Form 4 |
| 2025-06-14 | White Douglas LVP, CAO & Treasurer | Grant or award A | +730 | 6.51 | 305,245 | Form 4 |
| 2025-06-01 | Fruge Mary CelesteVP, General Counsel | Option exercise M | +17,274 | – | 265,213 | Form 4/A |
| 2025-06-01 | Fruge Mary CelesteVP, General Counsel | Shares withheld for tax F | −6,797 | 8.09 | 258,592 | Form 4 |
| 2025-06-01 | Fruge Mary CelesteVP, General Counsel | Shares withheld for tax F | −6,820 | 8.09 | 251,772 | Form 4 |
| 2025-06-01 | Fruge Mary CelesteVP, General Counsel | Shares withheld for tax F | −3,833 | 8.09 | 247,939 | Form 4 |
| 2025-06-01 | Piontek GreggSenior Vice President and CFO | Option exercise M | +43,790 | – | 921,026 | Form 4 |
| 2025-06-01 | Piontek GreggSenior Vice President and CFO | Shares withheld for tax F | −17,231 | 8.09 | 903,795 | Form 4 |
| 2025-06-01 | Piontek GreggSenior Vice President and CFO | Shares withheld for tax F | −15,889 | 8.09 | 887,906 | Form 4 |
| 2025-06-01 | Piontek GreggSenior Vice President and CFO | Shares withheld for tax F | −8,959 | 8.09 | 878,947 | Form 4 |
| 2025-06-01 | Piontek GreggSenior Vice President and CFO | Option exercise M | +40,379 | – | 919,326 | Form 4 |
| 2025-06-01 | Lanigan MatthewDirector, President & CEO | Option exercise M | +108,651 | – | 1,100,134 | Form 4 |
| 2025-06-01 | Lanigan MatthewDirector, President & CEO | Option exercise M | +100,188 | – | 1,200,322 | Form 4 |
| 2025-06-01 | Lanigan MatthewDirector, President & CEO | Shares withheld for tax F | −22,232 | 8.09 | 1,178,090 | Form 4 |
| 2025-06-01 | Lanigan MatthewDirector, President & CEO | Shares withheld for tax F | −39,423 | 8.09 | 1,138,667 | Form 4 |
| 2025-06-01 | Lanigan MatthewDirector, President & CEO | Shares withheld for tax F | −42,754 | 8.09 | 1,095,913 | Form 4 |
| 2025-06-01 | Briggs LoriVP & President, Ind. Solutions | Option exercise M | +26,396 | – | 279,359 | Form 4 |
| 2025-06-01 | Briggs LoriVP & President, Ind. Solutions | Option exercise M | +24,340 | – | 303,699 | Form 4 |
| 2025-06-01 | Briggs LoriVP & President, Ind. Solutions | Shares withheld for tax F | −5,401 | 8.09 | 298,298 | Form 4 |
| 2025-06-01 | Briggs LoriVP & President, Ind. Solutions | Shares withheld for tax F | −9,577 | 8.09 | 288,721 | Form 4 |
| 2025-06-01 | Briggs LoriVP & President, Ind. Solutions | Shares withheld for tax F | −10,386 | 8.09 | 278,335 | Form 4 |
| 2025-06-01 | White Douglas LVP, CAO & Treasurer | Option exercise M | +17,333 | – | 305,561 | Form 4 |
| 2025-06-01 | White Douglas LVP, CAO & Treasurer | Option exercise M | +14,667 | – | 320,228 | Form 4 |
| 2025-06-01 | White Douglas LVP, CAO & Treasurer | Shares withheld for tax F | −3,122 | 8.09 | 317,106 | Form 4 |
| 2025-06-01 | White Douglas LVP, CAO & Treasurer | Shares withheld for tax F | −6,820 | 8.09 | 310,286 | Form 4 |
| 2025-06-01 | White Douglas LVP, CAO & Treasurer | Shares withheld for tax F | −5,771 | 8.09 | 304,515 | Form 4 |
| 2025-05-15 | Cutillo Joseph ADirector | Grant or award A | +15,097 | – | 27,597 | Form 4 |
| 2025-05-15 | Lewis Michael ADirector | Grant or award A | +15,097 | – | 139,385 | Form 4 |
| 2025-05-15 | Meer Claudia MichelDirector | Grant or award A | +15,097 | – | 114,135 | Form 4 |
| 2025-05-15 | Minge John CDirector | Grant or award A | +15,097 | – | 245,384 | Form 4 |
| 2025-05-15 | Robeson Rose MDirector | Grant or award A | +18,720 | – | 214,285 | Form 4 |
| 2025-05-15 | Young Donald WinDirector | Grant or award A | +15,097 | – | 310,940 | Form 4 |
| 2025-05-15 | Larson Roderick A.Director | Grant or award A | +15,097 | – | 15,097 | Form 4 |
| 2025-05-14 | Briggs LoriVP & President, Ind. Solutions | Grant or award A | +51,667 | – | 252,963 | Form 4 |
| 2025-05-14 | Fruge Mary CelesteVP, General Counsel | Grant or award A | +39,783 | – | 265,389 | Form 4 |
| 2025-05-14 | Lanigan MatthewDirector, President & CEO | Grant or award A | +212,667 | – | 991,483 | Form 4 |
| 2025-05-14 | Piontek GreggSenior Vice President and CFO | Grant or award A | +85,706 | – | 877,236 | Form 4 |
| 2025-05-14 | White Douglas LVP, CAO & Treasurer | Grant or award A | +29,900 | – | 288,228 | Form 4 |
| 2024-12-13 | White Douglas LVP, CAO & Treasurer | Grant or award A | +722 | 6.58 | 258,328 | Form 4 |
How to read it
- Buy, sale
- Code P and S on the form: shares bought or sold in the market, at the market price. The other codes are mostly pay (a grant, an option exercised) or tax (shares the company withheld), and say little about what the insider thinks of the price.
- Plan
- A sale or purchase under a Rule 10b5-1 plan, set up in advance and running on its own schedule. Since April 2023 the form has a box for it. Much executive selling is planned and says more about diversifying than about the company.
- Holds after
- The shares the insider still held after the trade, in the form the trade was in (directly, or indirectly through a trust or a fund).
- Value
- Shares times the price the form reports, which is often an average over several fills on the day.
Read from the SEC's own quarterly data sets of Forms 3, 4 and 5, and from each day's filings since the last one. A correcting amendment replaces the lines it restates. Every row links to its filing. None of this is advice: insiders sell for many reasons, and buy for fewer.