Here are the S-3 shelf registrations from Black Hills Corporation (BKH) in our archive over the last 12 months, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
An S-3 covers the shelf registration that lets an established company sell over time, so if you follow BKH and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full BKH filings page.
Black Hills Corporation filed a shelf registration on to permit the future, from-time-to-time sale of senior debt, subordinated debt, preferred stock, depositary shares, common stock, warrants, purchase contracts and units. The prospectus is a base shelf that will be accompanied by prospectus supplements specifying terms for each offering.
The filing reiterates operational scale: 227,000 electric customers, 1,138,000 gas customers, 1,386 MW generation and 44,840 miles of gas distribution mains (each described as of ), and reports 76,128,118 shares of common stock outstanding as of May 14, 2026. It also summarizes the proposed all‑stock merger of equals with NorthWestern, the approved exchange ratio of 0.98 Black Hills shares per NorthWestern share and an expected close in the second half of 2026, subject to regulatory approvals.