| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| KELLEY CHARLES M | Director | 1200 WEST CENTURY AVENUE, BISMARCK | Anthony D. Foti, Attorney-in-Fact for Charles M. Kelley | 14 Nov 2025 | 0001741956 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MDU | Common Stock | Award | $0 | +3,031 | $0.000000 | 3,031 | 13 Nov 2025 | Direct |