Black Hills, NorthWestern Energy plan Bright Horizon Energy name upon merger completion

• Black Hills will become Bright Horizon Energy upon completing its proposed merger with NorthWestern Energy, which will become a wholly owned subsidiary.
• The combined company’s common stock will trade on the NYSE under “HZN” only upon merger completion.
• Completion remains subject to satisfactory final approval from the Montana Public Service Commission, expected to consider the merger before Nov. 12, 2026.

Disclaimer: This news brief was created by Public Technologies (PUBT) using generative artificial intelligence. While PUBT strives to provide accurate and timely information, this AI-generated content is for informational purposes only and should not be interpreted as financial, investment, or legal advice. Northwestern Energy Group Inc. published the original content used to generate this news brief on October 22, 2026, and is solely responsible for the information contained therein.