NPK International Inc.（NPKI）内部人交易：高管与董事近期交易
过去 18 个月，共有 15 位内部人为 NPK International Inc.（NPKI）报告了 98 笔 Form 4 交易（最近一笔 2026-09-24）。
| 日期 | 内部人 | 职务 | 类型 | 股数 | 市值 |
|---|---|---|---|---|---|
| 2026-09-24 | Barton III Alvin James | EVP Commercial Growth & Ops. | 买入 | 12,850 | $0 |
| 2026-09-10 | Warren Matthew James | Chief Accounting Officer | 卖出 | 2,991 | $40,113 |
| 2026-08-31 | ROBESON ROSE M | 董事 | 卖出 | 10,000 | $134,917 |
| 2026-08-19 | Lewis Michael A | 董事 | 卖出 | 2,013 | $28,705 |
| 2026-07-29 | Pederson Kristen J. | 董事 | 买入 | 6,614 | $0 |
| 2026-06-09 | Briggs Lori | VP & President, Ind. Solutions | 卖出 | 8,325 | $122,794 |
| 2026-06-05 | LANIGAN MATTHEW | President & CEO | 卖出 | 167,375 | $2.4M |
| 2026-06-03 | Fruge Mary Celeste | VP, General Counsel | 卖出 | 6,797 | $97,265 |
| 2026-06-03 | Briggs Lori | VP & President, Ind. Solutions | 卖出 | 9,577 | $137,047 |
| 2026-06-03 | Briggs Lori | VP & President, Ind. Solutions | 卖出 | 6,777 | $96,979 |
| 2026-06-03 | Briggs Lori | VP & President, Ind. Solutions | 买入 | 24,340 | $0 |
| 2026-06-03 | Briggs Lori | VP & President, Ind. Solutions | 卖出 | 10,446 | $152,303 |
| 2026-06-03 | LANIGAN MATTHEW | President & CEO | 卖出 | 22,232 | $318,140 |
| 2026-06-03 | LANIGAN MATTHEW | President & CEO | 卖出 | 27,894 | $399,163 |
| 2026-06-03 | LANIGAN MATTHEW | President & CEO | 卖出 | 39,423 | $564,143 |
| 2026-06-03 | LANIGAN MATTHEW | President & CEO | 买入 | 100,188 | $0 |
| 2026-06-03 | Piontek Gregg | Senior Vice President and CFO | 卖出 | 8,959 | $128,203 |
| 2026-06-03 | Piontek Gregg | Senior Vice President and CFO | 卖出 | 15,889 | $227,372 |
| 2026-06-03 | Piontek Gregg | Senior Vice President and CFO | 卖出 | 11,241 | $160,859 |
| 2026-06-03 | Piontek Gregg | Senior Vice President and CFO | 买入 | 40,379 | $0 |
| 2026-06-03 | Fruge Mary Celeste | VP, General Counsel | 卖出 | 3,833 | $54,850 |
| 2026-06-03 | Fruge Mary Celeste | VP, General Counsel | 卖出 | 5,218 | $74,670 |
| 2026-06-03 | Briggs Lori | VP & President, Ind. Solutions | 卖出 | 5,401 | $77,288 |
| 2026-06-03 | Fruge Mary Celeste | VP, General Counsel | 买入 | 17,274 | $0 |
| 2026-05-21 | LARSON RODERICK A. | 董事 | 买入 | 8,558 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-09-24