Black Hills Corp. (NYSE:BKH) and NorthWestern Energy Group, Inc. d/b/a NorthWestern Energy (NASDAQ:NWE) announced today that shareholders of each company voted to approve the proposed all-stock merger and other related shareholder proposals at their Special Shareholder Meetings held earlier today. The shareholder approvals represent a significant milestone toward the completion of the transaction, which was announced on Aug. 19, 2025. Upon closing of the merger, the two companies will combine to form Bright Horizon Energy Corporation, a premier regional regulated energy company serving customers across eight states.