Black Hills Corp Files 8-K on Material Agreement

TL;DR

BKH filed an 8-K for a material definitive agreement and financial obligation.

AI Summary

On October 2, 2025, Black Hills Corporation entered into a material definitive agreement related to a direct financial obligation. The company, incorporated in South Dakota with EIN 460458824, filed this 8-K report detailing the event. The filing also includes other events and financial statements.

Why It Matters

This filing indicates a significant financial commitment or obligation for Black Hills Corporation, which could impact its financial standing and future operations.

Risk Assessment

Risk Level: medium — Material definitive agreements and financial obligations can introduce new risks or alter existing ones for a company.

Key Players & Entities

• Black Hills Corporation (company) — Registrant
• South Dakota (location) — State of Incorporation
• 460458824 (organization_id) — IRS Employer Identification No.
• October 2, 2025 (date) — Date of earliest event reported

FAQ

Key Financial Figures

• $1.00 — e on which registered Common stock of $1.00 par value BKH The New York Stock Ex
• $450 million — d sold an aggregate principal amount of $450 million of its 4.550% Notes due 2031 (the " Not
• $300 million — o repay, redeem or otherwise retire all $300 million aggregate principal amount outstanding

Filing Documents

• tm2527704d1_8k.htm (8-K) — 35KB
• tm2527704d1_ex4-1.htm (EX-4.1) — 131KB
• tm2527704d1_ex5-1.htm (EX-5.1) — 27KB
• tm2527704d1_ex5-2.htm (EX-5.2) — 25KB
• tm2527704d1_ex5-1img001.jpg (GRAPHIC) — 18KB
• tm2527704d1_ex5-2img001.jpg (GRAPHIC) — 13KB
• 0001104659-25-096060.txt ( ) — 471KB
• bkh-20251002.xsd (EX-101.SCH) — 3KB
• bkh-20251002_lab.xml (EX-101.LAB) — 33KB
• bkh-20251002_pre.xml (EX-101.PRE) — 22KB
• tm2527704d1_8k_htm.xml (XML) — 3KB

01

Item 1.01 Entry into a Material Definitive Agreement. The disclosure under Item 8.01 of this Current Report on Form 8-K is incorporated herein by reference.

03

Item 2.03 Creation of a Direct Financial Obligation or an Obligation under an Off-Balance Sheet Arrangement of a Registrant. The disclosure under Item 8.01 of this Current Report on Form 8-K is incorporated herein by reference.

01

Item 8.01 Other Events. Completion of Debt Offering On October 2, 2025, Black Hills Corporation (the " Company " or " we ") issued and sold an aggregate principal amount of $450 million of its 4.550% Notes due 2031 (the " Notes "). The Notes were issued and sold pursuant to the previously disclosed Underwriting Agreement entered into on September 25, 2025 by the Company and the representative of the several underwriters named in Schedule A thereto (the " Underwriting Agreement "). The Notes were offered pursuant to the Company's Registration Statement on Form S-3 (Registration No. 333-272739) (the " Registration Statement "), and the related Prospectus dated June 16, 2023 and Prospectus Supplement dated September 25, 2025. We intend to apply the net proceeds from our sale of the Notes, after payment of the costs and expenses of the offering, to repay, redeem or otherwise retire all $300 million aggregate principal amount outstanding of our 3.950% notes due January 15, 2026, at or before maturity. Any portion of the net proceeds not so used may be used for general corporate purposes, which may include, among other things, capital expenditures, acquisitions, investments, other business opportunities and repayment or refinancing of other outstanding debt. Copies of opinions related to the Notes are attached hereto as exhibits and are expressly incorporated by reference herein and into the Registration Statement. Terms of the Notes The Notes were issued pursuant to the Indenture dated as of May 21, 2003 (the " Base Indenture "), between the Company and Computershare Trust Company, N.A. (as successor to Wells Fargo Bank, National Association), as trustee (the " Trustee "), as previously supplemented and as further supplemented by a Fourteenth Supplemental Indenture entered into by the Company on October 2, 2025 (the " New Supplemental Indenture " and together with the Base Indenture, the " Indenture "). The Notes bear interest at a rate per annum of 4.550%, pay

Financial Statements and Exhibits

Financial Statements and Exhibits. (d) Exhibits The following exhibits are furnished or filed herewith: Number Exhibit 4.1 Fourteenth Supplemental Indenture dated as of October 2, 2025 between Black Hills Corporation and Computershare Trust Company, N.A. (as current successor to LaSalle Bank National Association), as trustee. 4.2 Form of 4.550% Notes due 2031 ( included in Exhibit 4.1 ) 5.1 Opinion of Todd Brink, Esq. 5.2 Opinion of Faegre Drinker Biddle & Reath LLP 23.1 Consent of Todd Brink, Esq. ( included in the opinion filed as Exhibit 5.1 ) 23.2 Consent of Faegre Drinker Biddle & Reath LLP ( included in the opinion filed as Exhibit 5.2 ) 104.1 Cover Page Interactive Data File (embedded within the Inline XBRL document)

SIGNATURES

SIGNATURES Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. BLACK HILLS CORPORATION By: /s/ Kimberly F. Nooney Kimberly F. Nooney Senior Vice President and Chief Financial Officer Date: October 2, 2025

View Full Filing

View this 8-K filing on SEC EDGAR