| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| QUINN PATRICK J | Director | 3925 N HASTINGS WAY, EAU CLAIRE | /s/ Ann Werner by Power of Attorney | 02 Jan 2026 | 0001229345 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NPK | Common stock $1.00 par value | Award | $0 | +100 | +7.7% | $0.000000 | 1,404 | 02 Jan 2026 | Patrick J Quinn and Susan L Quinn Revocable Trust U/A DTD 11/08/2010 | F1 |
| Id | Content |
|---|---|
| F1 | The number stated herein identifies shares of stock granted in accordance with the Non-Employee Director Compensation Plan, which was adopted by the shareholders on May 28, 2020. |