| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Prochazka Scott M | Director | PO BOX 1400, RAPID CITY | /s/Travis Frederickson | 04 Feb 2026 | 0001526699 |
| 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 | +384 | +4.1% | $0.000000 | 9,703 | 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 | +98 | +4.4% | $0.000000 | 2,313 | 01 Mar 2025 | Common Stock | 98 | 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. |