| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Miller Tammy J | Director | 1200 WEST CENTURY AVENUE, BISMARCK | Anthony D. Foti, Attorney-in-Fact for Tammy J. Miller | 14 Nov 2025 | 0002063881 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MDU | Common Stock | Award | $0 | +3,031 | +101% | $0.000000 | 6,031 | 13 Nov 2025 | Direct |