NPKI Insider Trading Activity and SEC Form 4 Filings
NPKI insider trading summary
Over the past 12 months, insiders at NPK International Inc. (NPKI) reported 13 sales worth $2.9M by 5 insiders and 1 open-market purchase worth $139K by 1 insider on SEC Form 4. Net insider selling was $2.8M.
Latest NPKI insider buys and sells
| Date | Insider | Role | Type | Value |
|---|---|---|---|---|
| Nov 2, 2026 | John C Minge | Director | Buy | $139K (15,000 @ $9.24) |
| Aug 27, 2026 | Rose M Robeson | Director | Sell | $135K (10,000 @ $13.49) |
| Aug 17, 2026 | Michael A Lewis | Director | Sell | $29K (2,013 @ $14.26) |
| Jun 8, 2026 | Lori Briggs | VP & President, Ind. Solutions | Sell | $123K (8,325 @ $14.75) |
| Jun 2, 2026 | Lori Briggs | VP & President, Ind. Solutions | Sell | $152K (10,446 @ $14.58) |
| May 15, 2026 | Michael A Lewis | Director | Sell | $31K (2,013 @ $15.30) |
| Apr 9, 2026 | Gregg Piontek | Senior Vice President and CFO | Sell | $226K (15,000 @ $15.04) |
| Apr 1, 2026 | Gregg Piontek | Senior Vice President and CFO | Sell | $508K (35,000 @ $14.51) |
| Mar 16, 2026 | Mary Celeste Fruge | VP, General Counsel | Sell | $14K (1,000 @ $13.56) |
| Mar 6, 2026 | Mary Celeste Fruge | VP, General Counsel | Sell | $149K (11,193 @ $13.34) |
Source: SEC Form 4 filings. Open-market purchases (code P) and sales (code S) only; option exercises, grants and gifts are excluded.