| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Taylor Teresa | Director | PO BOX 1400, RAPID CITY | /s/Travis Frederickson | 04 Feb 2026 | 0001443289 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BKH | Common Stock | Discretionary transaction in accordance with Rule 16b-3(f) resulting in acquisition or disposition of issuer securities | $0 | +230 | +2% | $0.000000 | 11,678 | 01 Mar 2025 | Direct |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Underlying Class | Amount | Exercise Price | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BKH | Phantom Stock Unit | Award | $0 | +434 | +4.4% | $0.000000 | 10,290 | 01 Mar 2025 | Common Stock | 434 | By Trust | F1, F2, F3 |
| Id | Content |
|---|---|
| F1 | 1 for 1 conversion ratio |
| F2 | Derivative security is exercisable upon retirement under terms of the agreement. |
| F3 | Derivative security expires upon retirement under terms of the agreement. |