Douglas L. White is VP & Treasurer at NPK International Inc. (NR). They have made 1 open-market trade across 1 company since 2019, most recently 2025-06-14.
CIK 0001608944
Unrated. We grade insiders only on stock they chose to buy on the open market. Grants, option exercises and vesting say nothing about timing, so they don't count — which is why someone can file often and still have no grade. It isn't a bad sign: unrated buys beat every graded tier below A.
0 open-market purchases, against 1 sale. Too few scored purchases to measure a record yet.
| Ticker | Type | Traded | Filed | Price | Value | 7d Stock | 30d Stock | 90d Stock |
|---|---|---|---|---|---|---|---|---|
| NR | SELL | 2019-11-27 | 2019-11-29 | $6.07 | $37K | -5.1% | +3.7% | -41.8% |
Grouped by shared companies and similar filing behaviour. This is a similarity measure, not a ranking or a performance signal.