Piontek Gregg
Senior Vice President and CFO · 11 insider transactions on file
All transactions
| Date | Ticker | Company | Type | Shares | Price | Value | Filing |
|---|---|---|---|---|---|---|---|
| 2026-06-01 | NPKI | NPK International Inc. | Tax withholding | 15,889 | $14.31 | $227,371.59 | filing |
| 2026-06-01 | NPKI | NPK International Inc. | Tax withholding | 11,241 | $14.31 | $160,858.71 | filing |
| 2026-06-01 | NPKI | NPK International Inc. | Tax withholding | 8,959 | $14.31 | $128,203.29 | filing |
| 2026-06-01 | NPKI | NPK International Inc. | Option exercise | 40,379 | $0.00 | $0.00 | filing |
| 2026-05-19 | NPKI | NPK International Inc. | Award | 34,566 | $0.00 | $0.00 | filing |
| 2026-04-09 | NPKI | NPK International Inc. | Sale | 15,000 | $15.05 | $225,675.00 | filing |
| 2026-04-01 | NPKI | NPK International Inc. | Sale | 35,000 | $14.51 | $507,864.00 | filing |
| 2026-03-25 | NPKI | NPK International Inc. | Sale | 15,000 | $15.03 | $225,384.00 | filing |
| 2026-03-04 | NPKI | NPK International Inc. | Sale | 73,590 | $14.10 | $1.0M | filing |
| 2026-03-04 | NPKI | NPK International Inc. | Sale | 35,000 | $14.02 | $490,591.50 | filing |
| 2026-03-04 | NPKI | NPK International Inc. | Option exercise | 73,590 | $4.32 | $317,908.80 | filing |
Insider transactions from SEC Form 4 filings via EDGAR. Names appear as filed and aren't normalized across issuers.