| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Waleski Anne G | Director | 7001 MT. RUSHMORE RD, RAPID CITY | /s/Travis Frederickson | 04 Feb 2026 | 0001492023 |
| 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 | +73 | +3.3% | $0.000000 | 2,295 | 01 Jun 2025 | Direct |