WHITE DOUGLAS L (CIK 1608944) reported 7 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2025-06-17). Recent activity: Buy NPKI (730 shares), Buy NPKI (17,333 shares), Buy NPKI (14,667 shares), Sell NPKI (3,122 shares), Sell NPKI (6,820 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2025-06-17 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Buy | 730 | $4,752 |
| 2025-06-03 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Buy | 17,333 | $0 |
| 2025-06-03 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Buy | 14,667 | $0 |
| 2025-06-03 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Sell | 3,122 | $25,257 |
| 2025-06-03 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Sell | 6,820 | $55,174 |
| 2025-06-03 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Sell | 5,771 | $46,687 |
| 2025-05-16 | NPK International Inc. (NPKI) | VP, CAO & Treasurer | Buy | 29,900 | $0 |
Source: SEC Form 4 filings · as of 2025-06-17