NPK International Inc. NPKI
CIK 0000071829
Form 4 transactions dated Sep 1, 2023 to Sep 25, 2026, as reported to the SEC.
Insider purchases & sales
- Purchased
- $185.48K
- Sold
- $6.73M
Sep 1, 2023 – Sep 10, 2026
Available records · partial months are marked ·
| Date | Insider | Activity | Trade value (USD) | % of prior holding | |
|---|---|---|---|---|---|
| 2026-09-09 | Warren Matthew James Chief Accounting Officer | Sale10b5-1 footnote | $40.11K 2,991 shares sold | 5.50% sold Direct holding | ▾ |
| 2026-08-27 | ROBESON ROSE M Director | Sale10b5-1 footnote | $134.92K 10,000 shares sold | 4.44% sold Direct holding | ▾ |
| 2026-08-17 | Lewis Michael A Director | Sale10b5-1 footnote | $28.71K 2,013 shares sold | 1.46% sold Direct holding | ▾ |
| 2026-06-08 | Briggs Lori VP & President, Ind. Solutions | Sale10b5-1 footnote | $122.79K 8,325 shares sold | 3.26% sold Direct holding | ▾ |
| 2026-06-03 | LANIGAN MATTHEW President & CEO · Director | Sale10b5-1 footnote | $2.42M 167,375 shares sold | 39.66% sold Direct holding | ▾ |
| 2026-06-02 | Briggs Lori VP & President, Ind. Solutions | Sale10b5-1 footnote | $152.28K 10,446 shares sold | 3.93% sold Direct holding | ▾ |
| 2026-05-15 | Lewis Michael A Director | Sale10b5-1 footnote | $30.80K 2,013 shares sold | 1.53% sold Direct holding | ▾ |
| 2026-04-09 | Piontek Gregg Senior Vice President and CFO | Sale10b5-1 footnote | $225.68K 15,000 shares sold | 1.80% sold Direct holding | ▾ |
| 2026-04-01 | Piontek Gregg Senior Vice President and CFO | Sale10b5-1 footnote | $507.86K 35,000 shares sold | 4.03% sold Direct holding | ▾ |
| 2026-03-25 | Piontek Gregg Senior Vice President and CFO | Sale10b5-1 footnote | $225.38K 15,000 shares sold | 1.70% sold Direct holding | ▾ |
Showing 14 / 14 record groups in 2026. The complete set is available through the API.
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