X0508 4 2026-02-06 0001130464 BLACK HILLS CORP /SD/ BKH 0001982919 Jones Marne M PO BOX 1400 RAPID CITY SD 57709 true SVP - Utilities false Common Stock 2026-02-06 4 A false 4106 0 A 39964.399 D Common Stock 2026-02-07 4 F false 1417.774 72.3 D 38546.625 D Common Stock 2026-02-09 4 F false 104.368 71.48 D 38442.257 D Common Stock 2026-02-09 4 F false 275.745 71.48 D 38166.512 D Shares acquired through a Restricted Stock Grant under the Company's Incentive Compensation Plan. Shares used to pay tax withholding associated with Restricted Stock Vesting from 2-7-2025 Restricted Stock Grant Shares used to pay tax withholding associated with Restricted Stock Vesting from 2-9-2023 Restricted Stock Grant Shares used to pay tax withholding associated with Restricted Stock Vesting from 2-9-2024 Restricted Stock Grant /s/Travis Frederickson 2026-02-09