| Date | Name | Title | Action | No Shares | Price Per Share |
|---|---|---|---|---|---|
Insider Transactions For MDU | |||||
| 2025-08-19 | Vollmer, Jason L | CFO | Purchased | 5000 | $16.28 |
| 2025-06-30 | Dosch, Vernon A. | Director | Purchased | 1658 | $0.00 |
| 2025-06-30 | Durkin, Marian M | Director | Purchased | 175 | $0.00 |
| 2025-05-15 | Boese, Dyke A. | CIO | Purchased | 7748.65 | $16.99 |
| 2025-03-31 | Durkin, Marian M | Director | Purchased | 165 | $0.00 |
| 2025-03-31 | Dosch, Vernon A. | Director | Purchased | 1650 | $0.00 |
| 2025-02-12 | Foti, Anthony Donald | CLO & Corporate Secretary | Purchased | 8473 | $0.00 |
| 2025-02-12 | Johnson, Rob L. | President-WBI | Sold | 6778 | $16.83 |
| 2025-02-12 | Johnson, Rob L. | President-WBI | Purchased | 5785 | $0.00 |
| 2025-02-12 | Jones, Anne M | ChiefHRAdmin&SafetyOfficer | Sold | 10778 | $16.83 |
| 2025-02-12 | Jones, Anne M | ChiefHRAdmin&SafetyOfficer | Purchased | 6026 | $0.00 |
| 2025-02-12 | Kivisto, Nicole A | Director, President & CEO | Sold | 30316 | $16.83 |
| 2025-02-12 | Kivisto, Nicole A | Director, President & CEO | Purchased | 45969 | $0.00 |
| 2025-02-12 | Senger, Garret | Chief Utilities Officer | Sold | 7470 | $16.83 |
| 2025-02-12 | Senger, Garret | Chief Utilities Officer | Purchased | 7514 | $0.00 |
| 2025-02-12 | Sievert, Stephanie A | ChiefAccntg&RegAffairsOfficer | Sold | 9506 | $16.83 |
| 2025-02-12 | Vollmer, Jason L | CFO | Sold | 30429 | $16.83 |
| 2025-02-12 | Vollmer, Jason L | CFO | Purchased | 16700 | $0.00 |
| 2025-02-12 | Sievert, Stephanie A | ChiefAccntg&RegAffairsOfficer | Purchased | 4974 | $0.00 |
| 2025-02-12 | Boese, Dyke A. | CIO | Purchased | 3382 | $0.00 |
