Real time insider trading transaction history:
- Insiders are prohibited from making short-swing profits by trading their shares within 6 months of the registration or acquiring the shares.
- Shares are not adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
Common stock purchase or sale:
| Transaction Date | Reported DateTime | Company | Symbol | Insider Relationship | Shares Traded | Average Price | Total Amount | Shares Owned | Filing |
| 2026-09-09 Sale | 2026-09-10 6:22 pm | NPK International Inc. | NPKI | Warren Matthew James Chief Accounting Officer | 2,991 | $13.41 | $40,113 | 51,439 (Direct) | View |
| 2026-08-27 Sale | 2026-08-31 4:28 pm | NPK International Inc. | NPKI | ROBESON ROSE M Director | 10,000 | $13.49 | $134,917 | 215,147 (Direct) | View |
| 2026-08-17 Sale | 2026-08-19 4:14 pm | NPK International Inc. | NPKI | Lewis Michael A Director | 2,013 | $14.26 | $28,705 | 135,865 (Direct) | View |
| 2026-06-08 Sale | 2026-06-09 4:20 pm | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 8,325 | $14.75 | $122,790 | 247,165 (Direct) | View |
| 2026-06-03 Sale | 2026-06-05 4:22 pm | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 167,375 | $14.43 | $2,415,907 | 1,024,948 (Indirect Direct) | View |
| 2026-06-02 Sale | 2026-06-03 6:51 pm | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 10,446 | $14.58 | $152,278 | 255,490 (Direct) | View |
| 2026-05-15 Sale | 2026-05-19 6:11 pm | NPK International Inc. | NPKI | Lewis Michael A Director | 2,013 | $15.3 | $30,802 | 129,320 (Direct) | View |
| 2026-04-09 Sale | 2026-04-10 5:51 pm | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 15,000 | $15.04 | $225,675 | 884,326 (Indirect Direct) | View |
| 2026-04-01 Sale | 2026-04-03 1:00 pm | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 35,000 | $14.51 | $507,864 | 899,326 (Indirect Direct) | View |
| 2026-03-25 Sale | 2026-03-26 4:29 pm | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 15,000 | $15.03 | $225,384 | 934,326 (Indirect Direct) | View |
| 2026-03-16 Sale | 2026-03-18 4:35 pm | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 1,000 | $13.56 | $13,560 | 265,213 (Direct) | View |
| 2026-03-06 Sale | 2026-03-10 4:29 pm | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 11,193 | $13.34 | $149,303 | 266,213 (Direct) | View |
| 2026-03-04 Sale | 2026-03-05 5:50 pm | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 108,590 | $14.07 | $1,528,056 | 949,326 (Indirect Direct) | View |
| 2026-02-23 Sale | 2026-02-25 5:00 pm | NPK International Inc. | NPKI | Lewis Michael A Director | 2,013 | $14.31 | $28,796 | 131,333 (Direct) | View |
| 2025-11-24 Sale | 2025-11-25 5:25 pm | NPK International Inc. | NPKI | Lewis Michael A Director | 2,013 | $12 | $24,156 | 133,346 (Direct) | View |
| 2025-10-01 Sale | 2025-10-03 4:19 pm | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 10,108 | $11.51 | $116,352 | 242,513 (Direct) | View |
| 2025-09-03 Sale | 2025-09-04 7:31 pm | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 1,000 | $10.38 | $10,380 | 1,095,913 (Direct) | View |
| 2025-08-25 Sale | 2025-08-26 5:22 pm | NPK International Inc. | NPKI | Lewis Michael A Director | 2,013 | $10.33 | $20,797 | 135,359 (Direct) | View |
| 2025-08-22 Sale | 2025-08-26 5:22 pm | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 68,896 | $10.34 | $712,536 | 1,096,913 (Direct) | View |
| 2025-08-11 Sale | 2025-08-12 6:32 pm | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 8,005 | $9.5125 | $76,148 | 252,621 (Direct) | View |
Stock options: Exercise, Award, Grant, Conversion
| Transaction Date | Reported DateTime | Exercisable Expiration | Company | Symnbol | Insider Relationship | Shares Traded | Conversion Price | Shares Owned | Filing |
| 2026-09-22 Option Award | 2026-09-24 4:11 pm | N/A N/A | NPK International Inc. | NPKI | Barton III Alvin James EVP Commercial Growth & Ops. | 12,850 | $0 | 12,850 (Direct) | View |
Ownership | 2026-09-08 6:49 pm | N/A N/A | NPK International Inc. | NPKI | Warren Matthew James Chief Accounting Officer | 0 | $0 | 54,430 (Direct) | View |
| 2026-07-28 Option Award | 2026-07-29 4:38 pm | N/A N/A | NPK International Inc. | NPKI | Pederson Kristen J. Director | 6,614 | $0 | 6,614 (Direct) | View |
| 2026-06-01 Tax Withholding | 2026-06-03 6:56 pm | N/A N/A | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 15,848 | $14.31 | 284,641 (Direct) | View |
| 2026-06-01 Exercise | 2026-06-03 6:56 pm | N/A N/A | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 17,274 | $0 | 284,641 (Direct) | View |
| 2026-06-01 Tax Withholding | 2026-06-03 6:55 pm | N/A N/A | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 89,549 | $14.31 | 1,192,323 (Direct) | View |
| 2026-06-01 Exercise | 2026-06-03 6:55 pm | N/A N/A | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 100,188 | $0 | 1,192,323 (Direct) | View |
| 2026-06-01 Tax Withholding | 2026-06-03 6:53 pm | N/A N/A | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 36,089 | $14.31 | 923,182 (Direct) | View |
| 2026-06-01 Exercise | 2026-06-03 6:53 pm | N/A N/A | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 40,379 | $0 | 923,182 (Direct) | View |
| 2026-06-01 Tax Withholding | 2026-06-03 6:51 pm | N/A N/A | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 21,755 | $14.31 | 255,490 (Direct) | View |
| 2026-06-01 Exercise | 2026-06-03 6:51 pm | N/A N/A | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 24,340 | $0 | 255,490 (Direct) | View |
| 2026-05-20 Option Award | 2026-05-21 5:20 pm | N/A N/A | NPK International Inc. | NPKI | ROBESON ROSE M Director | 10,862 | $0 | 225,147 (Direct) | View |
| 2026-05-20 Option Award | 2026-05-21 5:18 pm | N/A N/A | NPK International Inc. | NPKI | MINGE JOHN C Director | 8,558 | $0 | 253,942 (Direct) | View |
| 2026-05-20 Option Award | 2026-05-21 5:17 pm | N/A N/A | NPK International Inc. | NPKI | Meer Claudia Michel Director | 8,558 | $0 | 126,693 (Direct) | View |
| 2026-05-20 Option Award | 2026-05-21 5:16 pm | N/A N/A | NPK International Inc. | NPKI | Lewis Michael A Director | 8,558 | $0 | 137,878 (Direct) | View |
| 2026-05-20 Option Award | 2026-05-21 5:14 pm | N/A N/A | NPK International Inc. | NPKI | LARSON RODERICK A. Director | 8,558 | $0 | 257,306 (Direct) | View |
| 2026-05-20 Option Award | 2026-05-21 5:09 pm | N/A N/A | NPK International Inc. | NPKI | CUTILLO JOSEPH A Director | 8,558 | $0 | 36,155 (Direct) | View |
| 2026-05-19 Option Award | 2026-05-21 5:08 pm | N/A N/A | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 34,566 | $0 | 918,892 (Direct) | View |
| 2026-05-19 Option Award | 2026-05-21 5:07 pm | N/A N/A | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 85,771 | $0 | 1,181,684 (Direct) | View |
| 2026-05-19 Option Award | 2026-05-21 5:05 pm | N/A N/A | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 18,002 | $0 | 283,215 (Direct) | View |
| 2026-05-19 Option Award | 2026-05-21 5:02 pm | N/A N/A | NPK International Inc. | NPKI | Briggs Lori VP & President, Ind. Solutions | 20,838 | $0 | 263,351 (Direct) | View |
| 2026-03-16 Exercise | 2026-03-18 4:35 pm | N/A N/A | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 1,000 | $4.32 | 265,213 (Direct) | View |
| 2026-03-16 Exercise | 2026-03-18 4:35 pm | 2019-06-01 2026-05-19 | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 1,000 | $0 | 265,213 (Direct) | View |
| 2026-03-06 Exercise | 2026-03-10 4:29 pm | N/A N/A | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 11,193 | $4.32 | 266,213 (Direct) | View |
| 2026-03-06 Exercise | 2026-03-10 4:29 pm | 2019-06-01 2026-05-19 | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 11,193 | $0 | 266,213 (Direct) | View |
| 2026-03-04 Exercise | 2026-03-05 5:50 pm | N/A N/A | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 73,590 | $4.32 | 949,326 (Direct) | View |
| 2026-03-04 Exercise | 2026-03-05 5:50 pm | 2019-06-01 2026-05-19 | NPK International Inc. | NPKI | Piontek Gregg Senior Vice President and CFO | 73,590 | $0 | 949,326 (Direct) | View |
| 2025-06-01 Exercise(A) | 2026-01-21 4:40 pm | N/A N/A | NPK International Inc. | NPKI | Fruge Mary Celeste VP, General Counsel | 17,274 | $0 | 282,487 (Direct) | View |
| 2025-10-03 Gift | 2025-10-06 8:19 pm | N/A N/A | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 770,249 | $0 | 1,095,913 (Direct) | View |
| 2025-09-03 Exercise | 2025-09-04 7:31 pm | N/A N/A | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 1,000 | $4.32 | 1,095,913 (Direct) | View |
| 2025-09-03 Exercise | 2025-09-04 7:31 pm | 2019-06-01 2026-05-19 | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 1,000 | $10.38 | 1,095,913 (Direct) | View |
| 2025-08-22 Exercise | 2025-08-26 5:22 pm | 2019-06-01 2026-05-19 | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 68,896 | $10.34 | 1,096,913 (Direct) | View |
| 2025-08-22 Exercise | 2025-08-26 5:22 pm | N/A N/A | NPK International Inc. | NPKI | LANIGAN MATTHEW President & CEO | 68,896 | $4.32 | 1,096,913 (Direct) | View |