| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| ANDERSON DARREL T | Director | 1200 WEST CENTURY AVENUE, BISMARCK | Anthony D. Foti, Attorney-in-Fact for Darrel T. Anderson | 14 Nov 2025 | 0001202058 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MDU | Common Stock | Award | $0 | +8,082 | +85% | $0.000000 | 17,594 | 13 Nov 2025 | Direct |