| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Redden Donald Lee JR | CITO | P.O. BOX 1400, RAPID CITY | /s/Travis Frederickson | 21 Aug 2025 | 0002082700 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | BKH | Common Stock | Award | +5,268 | 5,268 | 01 Aug 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Shares acquired through a Restricted Stock Grant under the Company's Incentive Compensation Plan. |