SHAREHOLDER NOTICE: Brodsky & Smith Announces an Investigation of NorthWestern Energy Group, Inc. (Nasdaq – NWE)

BALA CYNWYD – August 19, 2025/Globe Newswire/ – Law office of Brodsky & Smith announces that it is investigating potential claims against the Board of Directors of NorthWestern Energy Group, Inc. d/b/a NorthWestern Energy (“NorthWestern Energy” or the “Company”) (Nasdaq – NWE) for possible breaches of fiduciary duty and other violations of federal and state law in connection with the acquisition of the Company by Black Hills Corp. (NYSE – BKH). Under the terms of the transaction, NorthWestern shareholders will receive a fixed exchange ratio of 0.98 shares of Black Hills for each share of NorthWestern they own at the close of the transaction. Upon completion of the merger, Black Hills shareholders will own approximately 56% and NorthWestern shareholders will own approximately 44% of the combined company on a fully diluted basis.

The investigation concerns whether the NorthWestern Energy Board breached its fiduciary duties to shareholders by failing to conduct a fair process, including whether the deal consideration provides fair value to the Company’s shareholders.

If you own shares of NorthWestern Energy stock and wish to discuss the legal ramifications of the investigation, or have any questions, you may e-mail or call the law office of Brodsky & Smith who will, without obligation or cost to you, attempt to answer your questions. You may contact Jason L. Brodsky, Esquire, or Marc L. Ackerman by email at clients@brodsky-smith.com, or call toll free 855-576-4847.

Brodsky & Smith is a litigation law firm with extensive expertise representing shareholders throughout the nation in securities and class action lawsuits. The attorneys at Brodsky & Smith have been appointed by numerous courts throughout the country to serve as lead counsel in class actions and have successfully recovered millions of dollars for our clients and shareholders. Attorney advertising. Prior results do not guarantee a similar outcome.