| 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 | 17 Feb 2026 | 0001741956 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | MDU | Common Stock | Purchase | $104,225 | +5,000 | +165% | $20.84 | 8,031 | 13 Feb 2026 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Mr. Kelley purchased these shares in an open market transaction. |