NorthWestern Energy Group, Inc. (Nasdaq: NWE) filed a Current Report on Form 8-K on September 9, 2026, announcing its participation in the Barclays 40th Annual Energy-Power Conference. The company provided an update on its 2026 non-GAAP earnings guidance and disclosed details regarding a proposed strategic merger with Black Hills Corp.

According to the filing, NorthWestern Energy’s Vice President and Chief Financial Officer, Crystal Lail, and Director of Corporate Development and Investor Relations, Travis Meyer, will present at the conference in New York. The presentation is intended to provide current and potential investors with information concerning the company.

The filing confirms that NorthWestern is affirming its 2026 non-GAAP earnings guidance range of $3.68 to $3.83 per diluted share. Additionally, the company disclosed that it has entered into a definitive agreement to merge with Black Hills Corp. The filing notes that the merger agreement includes forward-looking statements regarding the benefits of the transaction, including future financial and operating results, the expected timing of completion, and the anticipated impact on earnings.

The filing includes a detailed list of risks associated with the proposed transaction, including the possibility of delays in obtaining regulatory and shareholder approvals, the risk of termination, and the potential for actual results to differ materially from expectations.