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BLACK HILLS CORP /SD/

For the period ended Dec 31, 2025. Filed Feb 11, 2026.

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A company's yearly report to the SEC, with audited financial statements. It is the fullest account a company gives of its business, its finances and the risks it sees.

FY2025 · Filed Feb 11, 2026

BKH$84.87+0.3%Stored close · as of Nov 6, 2026

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WEBSITE ACCESS TO REPORTS

The reports we file with the SEC, including our annual reports on Form 10-K, quarterly reports on Form 10-Q, current reports on Form 8-K, and amendments to those reports, are available free of charge at our website www.blackhillscorp.com as soon as reasonably practicable after they are filed. The SEC also maintains an internet site that contains reports, proxy and information statements, and other information we file electronically with the SEC which can be accessed at http://www.sec.gov. In addition, the charters of our Audit, Governance, and Compensation Committees are located on our website along with our Code of Business Conduct, Code of Ethics for our Chief Executive Officer and Senior Finance Officer, Corporate Governance Guidelines of the Board of Directors and Policy for Director Independence. The information contained on our website is not part of this document.

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The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.