| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| DURKIN MARIAN M | Director | 1200 WEST CENTURY AVENUE, BISMARCK | Anthony D. Foti, Attorney-in-Fact for Marian M. Durkin | 14 Nov 2025 | 0001332448 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MDU | Common Stock | Award | $0 | +7.27K | +185.14% | $0.00 | 11.2K | 13 Nov 2025 | Direct |