Piontek Gregg 内部人交易：近期 SEC Form 4 交易
过去 18 个月，Piontek Gregg（CIK 1418328）在 1 家公司共报告 17 笔 SEC Form 4 内部人交易（最近一笔 2026-06-03）。
| 日期 | 公司 | 身份 | 类型 | 股数 | 市值 |
|---|---|---|---|---|---|
| 2026-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 15,889 | $227,372 |
| 2026-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 11,241 | $160,859 |
| 2026-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 买入 | 40,379 | $0 |
| 2026-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 8,959 | $128,203 |
| 2026-05-21 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 买入 | 34,566 | $0 |
| 2026-04-10 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 15,000 | $225,750 |
| 2026-04-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 35,000 | $507,850 |
| 2026-03-26 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 15,000 | $225,450 |
| 2026-03-05 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 买入 | 73,590 | $317,909 |
| 2026-03-05 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 73,590 | $1.0M |
| 2026-03-05 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 35,000 | $490,700 |
| 2025-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 8,959 | $72,478 |
| 2025-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 买入 | 43,790 | $0 |
| 2025-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 17,231 | $139,399 |
| 2025-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 卖出 | 15,889 | $128,542 |
| 2025-06-03 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 买入 | 40,379 | $0 |
| 2025-05-16 | NPK International Inc. (NPKI) | Senior Vice President and CFO | 买入 | 85,706 | $0 |
来源：SEC Form 4 申报文件 · 截至 2026-06-03