| 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 | 25 Feb 2026 | 0001271670 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | NWE | Common Stock | Award | $177,080 | +2,587 | +1.3% | $68.45 | 204,584 | 24 Feb 2026 | Direct | F1, F2, F3, F4 |
| transaction | NWE | Common Stock | Tax liability | $0 | -60 | -0.03% | $0.000000 | 204,524 | 24 Feb 2026 | Direct |
| Id | Content |
|---|---|
| F1 | Includes underlying deferred share units that are issuable subsequent to the reporting person's termination of service from the company. |
| F2 | Shares acquired upon 12/31/25 vesting of performance units granted under the company's 2020 Executive Retirement-Retention Plan. |
| F3 | Share price is the closing share price on 2/11/26, the date when the company's Board of Directors approved payout and vesting of the award. |
| F4 | Total shares owned includes shares acquired from participation in the company's Employee Stock Purchase Plan and through dividend reinvestment. |