Warren Matthew James (CIK 2152870) reported 1 SEC Form 4 insider transactions across 1 companies over the past 18 months (most recent 2026-09-10). Recent activity: Sell NPKI (2,991 shares). Source: SEC Form 4.
| Date | Company | Role | Type | Shares | Value |
|---|---|---|---|---|---|
| 2026-09-10 | NPK International Inc. (NPKI) | Chief Accounting Officer | Sell | 2,991 | $40,113 |
来源：SEC Form 4 申报文件 · 截至 2026-09-10