| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| BIRD BRIAN B | President and CEO, Director | 3010 WEST 69TH STREET, SIOUX FALLS | Emily L. Folsom, by power of attorney | 22 Jan 2026 | 0001271670 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NWE | Common Stock | Tax liability | $154,702 | -2,397 | -1.2% | $64.54 | 201,935 | 22 Jan 2026 | Direct |