Gregg Piontek, Senior Vice President and CFO at NPK International Inc. (NPKI), sold 35,000 shares at $14.51 ($508K) on 2026-04-01, disclosed to the SEC on 2026-04-03.
Scheduled sale ($508k) by Senior Vice President and CFO under a pre-arranged 10b5-1 plan. Pre-set trade — not a discretionary signal on the stock.
Nothing distinguishes this filing.
| Filing → |
| NPKI | SELL | 2026-03-05 | $3.1M | — | Filing → |
| NR | BUY | 2022-08-09 | $26K | — | Filing → |
| NR | BUY | 2020-11-12 | $16K | — | Filing → |