NPKI · NPK International Inc. Common Stock
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| Howes Paul L President & CEO | ▲ Buy | Open Market | 1,236,325 Shares held | 8/26/2021 | View profile |
| Gregg Piontek Senior Vice President and CFO | ▲ Buy | Option Exercise | 858,182 Shares held | 6/1/2026 | View profile |
| PATERSON DAVID A VP & President, Fluids Systems | ▼ Sell | Tax Withholding | 386,245 Shares held | 6/1/2024 | View profile |
| Young Donald Win Director | ▲ Buy | Grant | 310,940 Shares held | 5/15/2025 | View profile |
| Douglas L. White Vice President, CAO | ▲ Buy | Grant | 305,245 Shares held | 6/14/2025 | View profile |
| Mary Celeste Fruge VP, General Counsel | ▲ Buy | Option Exercise | 284,641 Shares held | 6/1/2026 | View profile |
| Matthew Lanigan President & CEO | ▼ Sell | Open Market | 254,699 Shares held | 6/3/2026 | View profile |
| John C. Minge Director | ▲ Buy | Grant | 253,942 Shares held | 5/20/2026 | View profile |
| Lori Briggs VP & President, Industrial | ▼ Sell | Open Market | 247,165 Shares held | 6/8/2026 | View profile |
| BEST ANTHONY JAMES Director | ▲ Buy | Grant | 237,809 Shares held | 5/19/2022 | View profile |
| Earle Edward Chipman VP, General Counsel, CAO | ▲ Buy | Grant | 230,265 Shares held | 12/14/2022 | View profile |
| Rose M. Robeson Director | ▲ Buy | Grant | 225,147 Shares held | 5/20/2026 | View profile |
| Michael A. Lewis Director | ▼ Sell | Open Market | 135,865 Shares held | 8/17/2026 | View profile |
| Claudia Michel Meer Director | ▲ Buy | Grant | 126,693 Shares held | 5/20/2026 | View profile |
| Joseph A. Cutillo Chief Executive Officer | ▲ Buy | Grant | 36,155 Shares held | 5/20/2026 | View profile |
| Roderick A. Larson Director | ▲ Buy | Grant | 23,655 Shares held | 5/20/2026 | View profile |
| Kristen J. Pederson Director | ▲ Buy | Grant | 6,614 Shares held | 7/28/2026 | View profile |
Transaction History
| Michael A. Lewis | ▼ Sell | Open Market | 2,013 | $29K | 8/17/2026 |
| Kristen J. Pederson | ▲ Buy | Grant | 6,614 | $0 | 7/28/2026 |
| Lori Briggs | ▼ Sell | Open Market | 8,325 | $123K | 6/8/2026 |
| Matthew Lanigan | ▼ Sell | Open Market | 167,375 | $2.4M | 6/3/2026 |
| Lori Briggs | ▼ Sell | Open Market | 10,446 | $152K | 6/2/2026 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 3,833 | $55K | 6/1/2026 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 5,218 | $75K | 6/1/2026 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 6,797 | $97K | 6/1/2026 |
| Mary Celeste Fruge | ▲ Buy | Option Exercise | 17,274 | $0 | 6/1/2026 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 22,232 | $318K | 6/1/2026 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 27,894 | $399K | 6/1/2026 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 39,423 | $564K | 6/1/2026 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 100,188 | $0 | 6/1/2026 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 8,959 | $128K | 6/1/2026 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 15,889 | $227K | 6/1/2026 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 11,241 | $161K | 6/1/2026 |
| Gregg Piontek | ▲ Buy | Option Exercise | 40,379 | $0 | 6/1/2026 |
| Lori Briggs | ▼ Sell | Tax Withholding | 5,401 | $77K | 6/1/2026 |
| Lori Briggs | ▼ Sell | Tax Withholding | 9,577 | $137K | 6/1/2026 |
| Lori Briggs | ▼ Sell | Tax Withholding | 6,777 | $97K | 6/1/2026 |
| Lori Briggs | ▲ Buy | Option Exercise | 24,340 | $0 | 6/1/2026 |
| Rose M. Robeson | ▲ Buy | Grant | 10,862 | $0 | 5/20/2026 |
| John C. Minge | ▲ Buy | Grant | 8,558 | $0 | 5/20/2026 |
| Claudia Michel Meer | ▲ Buy | Grant | 8,558 | $0 | 5/20/2026 |
| Michael A. Lewis | ▲ Buy | Grant | 8,558 | $0 | 5/20/2026 |
| Roderick A. Larson | ▲ Buy | Grant | 8,558 | $0 | 5/20/2026 |
| Joseph A. Cutillo | ▲ Buy | Grant | 8,558 | $0 | 5/20/2026 |
| Gregg Piontek | ▲ Buy | Grant | 34,566 | $0 | 5/19/2026 |
| Matthew Lanigan | ▲ Buy | Grant | 85,771 | $0 | 5/19/2026 |
| Mary Celeste Fruge | ▲ Buy | Grant | 18,002 | $0 | 5/19/2026 |
| Lori Briggs | ▲ Buy | Grant | 20,838 | $0 | 5/19/2026 |
| Michael A. Lewis | ▼ Sell | Open Market | 2,013 | $31K | 5/15/2026 |
| Gregg Piontek | ▼ Sell | Open Market | 15,000 | $226K | 4/9/2026 |
| Gregg Piontek | ▼ Sell | Open Market | 35,000 | $508K | 4/1/2026 |
| Gregg Piontek | ▼ Sell | Open Market | 15,000 | $225K | 3/25/2026 |
| Mary Celeste Fruge | ▲ Buy | Option Exercise | 1,000 | $4K | 3/16/2026 |
| Mary Celeste Fruge | ▼ Sell | Open Market | 1,000 | $14K | 3/16/2026 |
| Mary Celeste Fruge | ▲ Buy | Option Exercise | 11,193 | $48K | 3/6/2026 |
| Mary Celeste Fruge | ▼ Sell | Open Market | 11,193 | $149K | 3/6/2026 |
| Gregg Piontek | ▲ Buy | Option Exercise | 73,590 | $318K | 3/4/2026 |
| Gregg Piontek | ▼ Sell | Open Market | 73,590 | $1.0M | 3/4/2026 |
| Gregg Piontek | ▼ Sell | Open Market | 35,000 | $491K | 3/4/2026 |
| Michael A. Lewis | ▼ Sell | Open Market | 2,013 | $29K | 2/23/2026 |
| Michael A. Lewis | ▼ Sell | Open Market | 2,013 | $24K | 11/24/2025 |
| Matthew Lanigan | ▼ Sell | Gift | 770,249 | $0 | 10/3/2025 |
| Lori Briggs | ▼ Sell | Open Market | 10,108 | $116K | 10/1/2025 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 1,000 | $4K | 9/3/2025 |
| Matthew Lanigan | ▼ Sell | Open Market | 1,000 | $10K | 9/3/2025 |
| Michael A. Lewis | ▼ Sell | Open Market | 2,013 | $21K | 8/25/2025 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 68,896 | $298K | 8/22/2025 |
| Matthew Lanigan | ▼ Sell | Open Market | 68,896 | $713K | 8/22/2025 |
| Lori Briggs | ▼ Sell | Open Market | 8,005 | $76K | 8/11/2025 |
| Lori Briggs | ▼ Sell | Open Market | 8,005 | $69K | 7/9/2025 |
| Michael A. Lewis | ▼ Sell | Open Market | 2,013 | $17K | 6/16/2025 |
| Douglas L. White | ▲ Buy | Grant | 730 | $5K | 6/14/2025 |
| Lori Briggs | ▼ Sell | Open Market | 9,704 | $81K | 6/6/2025 |
| Douglas L. White | ▲ Buy | Option Exercise | 17,333 | $0 | 6/1/2025 |
| Douglas L. White | ▲ Buy | Option Exercise | 14,667 | $0 | 6/1/2025 |
| Douglas L. White | ▼ Sell | Tax Withholding | 3,122 | $25K | 6/1/2025 |
| Douglas L. White | ▼ Sell | Tax Withholding | 6,820 | $55K | 6/1/2025 |
| Douglas L. White | ▼ Sell | Tax Withholding | 5,771 | $47K | 6/1/2025 |
| Lori Briggs | ▲ Buy | Option Exercise | 26,396 | $0 | 6/1/2025 |
| Lori Briggs | ▲ Buy | Option Exercise | 24,340 | $0 | 6/1/2025 |
| Lori Briggs | ▼ Sell | Tax Withholding | 5,401 | $44K | 6/1/2025 |
| Lori Briggs | ▼ Sell | Tax Withholding | 9,577 | $77K | 6/1/2025 |
| Lori Briggs | ▼ Sell | Tax Withholding | 10,386 | $84K | 6/1/2025 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 108,651 | $0 | 6/1/2025 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 100,188 | $0 | 6/1/2025 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 22,232 | $180K | 6/1/2025 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 39,423 | $319K | 6/1/2025 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 42,754 | $346K | 6/1/2025 |
| Gregg Piontek | ▲ Buy | Option Exercise | 43,790 | $0 | 6/1/2025 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 17,231 | $139K | 6/1/2025 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 15,889 | $129K | 6/1/2025 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 8,959 | $72K | 6/1/2025 |
| Gregg Piontek | ▲ Buy | Option Exercise | 40,379 | $0 | 6/1/2025 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 6,797 | $55K | 6/1/2025 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 6,820 | $55K | 6/1/2025 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 3,833 | $31K | 6/1/2025 |
| Mary Celeste Fruge | ▲ Buy | Option Exercise | 17,247 | $0 | 6/1/2025 |
| Claudia Michel Meer | ▲ Buy | Open Market | 4,000 | $32K | 5/19/2025 |
| Roderick A. Larson | ▲ Buy | Grant | 15,097 | $0 | 5/15/2025 |
| Young Donald Win | ▲ Buy | Grant | 15,097 | $0 | 5/15/2025 |
| Rose M. Robeson | ▲ Buy | Grant | 18,720 | $0 | 5/15/2025 |
| John C. Minge | ▲ Buy | Grant | 15,097 | $0 | 5/15/2025 |
| Claudia Michel Meer | ▲ Buy | Grant | 15,097 | $0 | 5/15/2025 |
| Michael A. Lewis | ▲ Buy | Grant | 15,097 | $0 | 5/15/2025 |
| Joseph A. Cutillo | ▲ Buy | Grant | 15,097 | $0 | 5/15/2025 |
| Douglas L. White | ▲ Buy | Grant | 29,900 | $0 | 5/14/2025 |
| Gregg Piontek | ▲ Buy | Grant | 85,706 | $0 | 5/14/2025 |
| Matthew Lanigan | ▲ Buy | Grant | 212,667 | $0 | 5/14/2025 |
| Mary Celeste Fruge | ▲ Buy | Grant | 39,783 | $0 | 5/14/2025 |
| Lori Briggs | ▲ Buy | Grant | 51,667 | $0 | 5/14/2025 |
| Joseph A. Cutillo | ▲ Buy | Open Market | 12,500 | $100K | 5/8/2025 |
| John C. Minge | ▲ Buy | Open Market | 10,000 | $54K | 3/5/2025 |
| Douglas L. White | ▲ Buy | Grant | 722 | $5K | 12/13/2024 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 33,333 | $0 | 9/1/2024 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 13,116 | $108K | 9/1/2024 |
| Lori Briggs | ▲ Buy | Option Exercise | 16,666 | $0 | 9/1/2024 |
| Lori Briggs | ▼ Sell | Tax Withholding | 6,558 | $54K | 9/1/2024 |
| Douglas L. White | ▲ Buy | Grant | 841 | $5K | 6/14/2024 |
| Lori Briggs | ▲ Buy | Grant | 1,378 | $8K | 6/14/2024 |
| Gregg Piontek | ▲ Buy | Option Exercise | 51,181 | $0 | 6/1/2024 |
| Gregg Piontek | ▲ Buy | Option Exercise | 43,790 | $0 | 6/1/2024 |
| Gregg Piontek | ▲ Buy | Option Exercise | 40,380 | $0 | 6/1/2024 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 15,889 | $135K | 6/1/2024 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 17,231 | $146K | 6/1/2024 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 20,139 | $171K | 6/1/2024 |
| PATERSON DAVID A | ▲ Buy | Option Exercise | 35,788 | $0 | 6/1/2024 |
| PATERSON DAVID A | ▲ Buy | Option Exercise | 30,620 | $0 | 6/1/2024 |
| PATERSON DAVID A | ▲ Buy | Option Exercise | 28,235 | $0 | 6/1/2024 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 7,455 | $63K | 6/1/2024 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 8,714 | $74K | 6/1/2024 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 8,008 | $68K | 6/1/2024 |
| Douglas L. White | ▲ Buy | Option Exercise | 18,666 | $0 | 6/1/2024 |
| Douglas L. White | ▲ Buy | Option Exercise | 17,333 | $0 | 6/1/2024 |
| Douglas L. White | ▲ Buy | Option Exercise | 14,667 | $0 | 6/1/2024 |
| Douglas L. White | ▼ Sell | Tax Withholding | 3,571 | $30K | 6/1/2024 |
| Douglas L. White | ▼ Sell | Tax Withholding | 4,220 | $36K | 6/1/2024 |
| Douglas L. White | ▼ Sell | Tax Withholding | 4,545 | $39K | 6/1/2024 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 37,090 | $0 | 6/1/2024 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 108,651 | $0 | 6/1/2024 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 100,189 | $0 | 6/1/2024 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 39,424 | $334K | 6/1/2024 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 42,754 | $363K | 6/1/2024 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 14,594 | $124K | 6/1/2024 |
| Mary Celeste Fruge | ▲ Buy | Option Exercise | 17,274 | $0 | 6/1/2024 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 6,820 | $58K | 6/1/2024 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 6,797 | $58K | 6/1/2024 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 6,296 | $53K | 6/1/2024 |
| Lori Briggs | ▲ Buy | Option Exercise | 16,000 | $0 | 6/1/2024 |
| Lori Briggs | ▲ Buy | Option Exercise | 26,396 | $0 | 6/1/2024 |
| Lori Briggs | ▲ Buy | Option Exercise | 24,341 | $0 | 6/1/2024 |
| Lori Briggs | ▼ Sell | Tax Withholding | 9,578 | $81K | 6/1/2024 |
| Lori Briggs | ▼ Sell | Tax Withholding | 6,296 | $53K | 6/1/2024 |
| Lori Briggs | ▼ Sell | Tax Withholding | 10,386 | $88K | 6/1/2024 |
| Roderick A. Larson | ▲ Buy | Grant | 16,108 | $0 | 5/16/2024 |
| Young Donald Win | ▲ Buy | Grant | 16,108 | $0 | 5/16/2024 |
| Rose M. Robeson | ▲ Buy | Grant | 19,974 | $0 | 5/16/2024 |
| John C. Minge | ▲ Buy | Grant | 16,108 | $0 | 5/16/2024 |
| Claudia Michel Meer | ▲ Buy | Grant | 16,108 | $0 | 5/16/2024 |
| Michael A. Lewis | ▲ Buy | Grant | 16,108 | $0 | 5/16/2024 |
| Douglas L. White | ▲ Buy | Grant | 23,800 | $0 | 5/15/2024 |
| Gregg Piontek | ▲ Buy | Grant | 68,308 | $0 | 5/15/2024 |
| PATERSON DAVID A | ▲ Buy | Grant | 47,767 | $0 | 5/15/2024 |
| Matthew Lanigan | ▲ Buy | Grant | 169,496 | $0 | 5/15/2024 |
| Mary Celeste Fruge | ▲ Buy | Grant | 29,223 | $0 | 5/15/2024 |
| Lori Briggs | ▲ Buy | Grant | 41,178 | $0 | 5/15/2024 |
| Douglas L. White | ▲ Buy | Grant | 1,203 | $5K | 12/14/2023 |
| Mary Celeste Fruge | ▲ Buy | Grant | 2,000 | $8K | 12/14/2023 |
| Lori Briggs | ▲ Buy | Grant | 1,965 | $7K | 12/14/2023 |
| Douglas L. White | ▲ Buy | Option Exercise | 12,500 | $0 | 11/20/2023 |
| Douglas L. White | ▼ Sell | Tax Withholding | 3,043 | $22K | 11/20/2023 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 33,333 | $0 | 9/1/2023 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 13,116 | $80K | 9/1/2023 |
| Lori Briggs | ▲ Buy | Option Exercise | 16,667 | $0 | 9/1/2023 |
| Lori Briggs | ▼ Sell | Tax Withholding | 6,558 | $40K | 9/1/2023 |
| Claudia Michel Meer | ▲ Buy | Open Market | 1,300 | $7K | 8/21/2023 |
| Claudia Michel Meer | ▲ Buy | Open Market | 8,000 | $42K | 8/16/2023 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 17,425 | $92K | 7/15/2023 |
| Douglas L. White | ▲ Buy | Grant | 1,320 | $4K | 6/14/2023 |
| Mary Celeste Fruge | ▲ Buy | Grant | 2,000 | $7K | 6/14/2023 |
| Lori Briggs | ▲ Buy | Grant | 2,000 | $7K | 6/14/2023 |
| Douglas L. White | ▲ Buy | Option Exercise | 17,333 | $0 | 6/2/2023 |
| Gregg Piontek | ▲ Buy | Option Exercise | 51,182 | $0 | 6/2/2023 |
| PATERSON DAVID A | ▲ Buy | Option Exercise | 33,166 | $0 | 6/2/2023 |
| Douglas L. White | ▼ Sell | Tax Withholding | 4,220 | $15K | 6/1/2023 |
| Douglas L. White | ▼ Sell | Tax Withholding | 4,220 | $15K | 6/1/2023 |
| Gregg Piontek | ▲ Buy | Option Exercise | 43,791 | $0 | 6/1/2023 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 10,663 | $39K | 6/1/2023 |
| Gregg Piontek | ▲ Buy | Option Exercise | 47,432 | $0 | 6/1/2023 |
| Gregg Piontek | ▼ Sell | Tax Withholding | 12,462 | $46K | 6/1/2023 |
| PATERSON DAVID A | ▲ Buy | Option Exercise | 30,620 | $0 | 6/1/2023 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 7,455 | $27K | 6/1/2023 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 8,075 | $30K | 6/1/2023 |
| PATERSON DAVID A | ▲ Buy | Option Exercise | 35,788 | $0 | 6/1/2023 |
| PATERSON DAVID A | ▼ Sell | Tax Withholding | 8,714 | $32K | 6/1/2023 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 108,652 | $0 | 6/1/2023 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 42,754 | $157K | 6/1/2023 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 34,373 | $0 | 6/1/2023 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 13,525 | $50K | 6/1/2023 |
| Matthew Lanigan | ▲ Buy | Option Exercise | 37,090 | $0 | 6/1/2023 |
| Matthew Lanigan | ▼ Sell | Tax Withholding | 14,594 | $54K | 6/1/2023 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 4,220 | $15K | 6/1/2023 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 2,840 | $10K | 6/1/2023 |
| Mary Celeste Fruge | ▼ Sell | Tax Withholding | 3,896 | $14K | 6/1/2023 |
| Lori Briggs | ▲ Buy | Option Exercise | 16,000 | $0 | 6/1/2023 |
| Lori Briggs | ▼ Sell | Tax Withholding | 6,296 | $23K | 6/1/2023 |
| Lori Briggs | ▲ Buy | Option Exercise | 26,397 | $0 | 6/1/2023 |
| Lori Briggs | ▼ Sell | Tax Withholding | 10,387 | $38K | 6/1/2023 |
| Lori Briggs | ▲ Buy | Option Exercise | 3,000 | $0 | 6/1/2023 |
| Lori Briggs | ▼ Sell | Tax Withholding | 1,180 | $4K | 6/1/2023 |
| Lori Briggs | ▲ Buy | Option Exercise | 11,000 | $0 | 6/1/2023 |
| Lori Briggs | ▼ Sell | Tax Withholding | 4,328 | $16K | 6/1/2023 |
| Douglas L. White | ▲ Buy | Option Exercise | 18,667 | $0 | 6/1/2023 |
| Douglas L. White | ▼ Sell | Tax Withholding | 4,545 | $17K | 6/1/2023 |
| Douglas L. White | ▲ Buy | Option Exercise | 17,334 | $0 | 6/1/2023 |
| Young Donald Win | ▲ Buy | Grant | 38,560 | $0 | 5/18/2023 |
| Rose M. Robeson | ▲ Buy | Grant | 46,272 | $0 | 5/18/2023 |
| John C. Minge | ▲ Buy | Grant | 38,560 | $0 | 5/18/2023 |