Black Hills Corporation filings document the formal disclosures of a South Dakota-based electric and natural gas utility with common stock listed on the New York Stock Exchange under BKH. Its SEC reports include Form 8-K updates on operating and financial results, rate-related regulatory matters, material agreements, debt obligations and other capital-structure events.
Proxy and shareholder-vote filings describe director elections, auditor ratification, executive compensation votes and governance matters. The filing record also covers registered common stock and exhibits such as earnings releases, investor presentations and financing documents.
Black Hills Corporation furnished an 8-K announcing it issued a press release with financial results for the third quarter of 2025. The materials are provided under Item 2.02.
The company attached a press release as Exhibit 99.1 and an investor presentation as Exhibit 99.2. This information is furnished and not deemed “filed” under Section 18 of the Exchange Act.
Black Hills Corp (BKH) disclosed an initial beneficial ownership statement on Form 3 for its Chief Legal Officer.
The filing, effective 10/13/2025, reports 0 shares of common stock beneficially owned and indicates the form was filed by one reporting person. No derivative securities were reported.
Black Hills Corporation issued and sold $450 million of 4.550% Notes due 2031 on October 2, 2025. The company expects to use net proceeds, after offering costs, to repay, redeem or otherwise retire $300 million aggregate principal of its 3.950% notes due January 15, 2026, at or before maturity, with any remaining proceeds available for general corporate purposes including capital expenditures, acquisitions, investments and other debt repayment or refinancing. The Notes were issued under the company’s indenture as supplemented and are unsecured senior obligations that rank equally with existing and future unsecured unsubordinated indebtedness and senior to subordinated debt. Interest on the Notes is 4.550% per annum, payable semi-annually on January 31 and July 31, beginning January 31, 2026, and the stated maturity is January 31, 2031.
Black Hills Corporation announced an Underwriting Agreement to issue $450 million of 4.550% Notes due 2031, with aggregate gross proceeds of approximately $447.0 million after adjustments. The company and the underwriters have agreed to the sale, and issuance and settlement are scheduled for October 2, 2025, subject to customary closing conditions. The Underwriting Agreement is filed as Exhibit 1.1 and incorporated by reference into the company’s registration statement and prospectus materials.
Black Hills Corporation filed a preliminary prospectus supplement to offer a new series of senior unsecured notes to refinance near-term debt and for general corporate purposes. The company intends to use net proceeds to repay the $300 million aggregate principal amount of its 3.950% notes due January 15, 2026. The Notes will be senior unsecured obligations, rank equally with other unsecured indebtedness, bear semi-annual interest, and may be optionally redeemed prior to a specified par call date. There is no sinking fund and the Notes will be issued in book-entry form through DTC. The supplement describes a pending merger agreement with NorthWestern Energy under which Black Hills would issue common stock with an estimated aggregate value of approximately $3.6 billion; the merger remains subject to customary shareholder and regulatory approvals and may alter management and the board. The prospectus highlights operational scale: about 225,000 electric customers, 1,394 MW generation, 9,196 miles of electric lines, and ~1,128,000 gas customers with 44,524 miles of gas mains (as of Dec 31, 2024).
Black Hills Corporation filed a current report to provide additional information on its pending all‑stock merger with NorthWestern Energy Group, Inc. The boards of both companies unanimously approved an Agreement and Plan of Merger under which NorthWestern will combine with Black Hills via a wholly owned merger subsidiary, subject to multiple conditions.
The filing adds four key exhibits: NorthWestern’s audited and unaudited historical financial statements, unaudited pro forma condensed combined financial statements for the two companies, and supplementary risk factors tied to the merger. The pro forma statements illustrate how a combined company might have looked if the merger had been completed as of January 1, 2024 for income statements and June 30, 2025 for the balance sheet, but Black Hills stresses that these are illustrative only and not projections.
Black Hills also explains that it plans to file a Form S‑4 registration statement to register the shares it will issue to NorthWestern stockholders, including a joint proxy statement/prospectus for both companies’ shareholder votes, and outlines extensive forward‑looking statement and merger‑related risks.
Insider restricted stock grant recorded for Black Hills Corporation (BKH). Donald Lee Redden Jr., identified as a company officer (CITO) and director, is shown acquiring 5,268 shares of common stock via a restricted stock grant under the company’s Incentive Compensation Plan on 08/01/2025. The filing reports those 5,268 shares as held directly following the transaction. The Form 4 was signed and submitted on 08/21/2025 by Travis Frederickson. No derivative transactions or additional securities classes are reported in this filing.
Form 3 filed for Black Hills Corporation (BKH) shows that Donald Lee Redden Jr., listed as a Director and Chief Information Technology Officer, reported an event dated 07/21/2025. The filing discloses zero shares of Common Stock beneficially owned and no derivative securities. The form is signed by Travis Frederickson on 08/20/2025. Address on file is P.O. BOX 1400, Rapid City, SD 57709.
Black Hills Corporation (BKH) entered into a definitive all-stock merger agreement with NorthWestern Energy Group. Under the agreement, each outstanding share of NorthWestern will convert into the right to receive 0.98 shares of Black Hills (cash in lieu of fractional shares). The boards of both companies unanimously approved the transaction, which will result in NorthWestern continuing as the surviving entity and becoming a direct wholly owned subsidiary of Black Hills under a new parent name ("NewCo"). The agreement sets customary closing conditions, including required regulatory approvals, absence of injunctive orders, accuracy of representations, compliance with covenants, no material adverse effects, and a tax opinion supporting tax-free treatment. The Merger Agreement addresses treatment of equity awards (acceleration and conversion rules) and contemplates change-in-control treatment for outstanding awards. Separately, executive arrangements include a Chief Executive Officer Agreement preserving certain severance protections for Mr. Bird for three years post-closing and a Transition Agreement for Mr. Evans to remain CEO of Black Hills through the Effective Time with specified payments and accelerated vesting. Black Hills also amended its bylaws to remove a director age limit.
Black Hills Corporation filed a current report describing a major strategic step with NorthWestern Energy Group, Inc.. The companies released a joint press release announcing the execution of an agreement and plan of merger, along with an investor presentation explaining the proposed combination.
Both the press release and the investor presentation are being made available as exhibits to the report, giving investors more detail on the structure and rationale of the planned merger. The filing itself focuses on formally notifying the market that the merger agreement has been signed and that related disclosure materials are now publicly accessible.