| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NPK | Common stock $1.00 par value | Tax liability | $1,274 | -16 | -1.2% | $79.62 | 1,336 | 16 Mar 2022 | Direct | |
| holding | NPK | Common stock $1.00 par value | 654 | 16 Mar 2022 | 401(k)plan |