0001130464 2026-05-19 2026-05-19 0001130464 1 2026-05-19 2026-05-19 iso4217:USD S-3 424B5 EX-FILING FEES 333-296010 0001130464 BLACK HILLS CORP /SD/ N/A N/A S-3 BLACK HILLS CORP /SD/ Equity Common stock, par value $1.00 true 183376179.78 S-3 333-272739 2023-06-16 25324.25 183376179.78 0.00 0.00 0.00 0.00 Represents the aggregate amount of $183,376,179.78 that remains unsold of the $400,000,000.00 of common stock that was registered under the Registration Statement on Form S-3 filed with the Securities and Exchange Commission on June 16, 2023 (Registration No. 333-272739) (the "Previous Registration Statement") and the prospectus supplement dated May 8, 2025, which securities have been carried forward to this prospectus supplement under the Previous Registration Statement pursuant to Rule 415(a)(6). Fees for the carried over shares were previously paid pursuant to Rule 457(o) in connection with the registration of those securities. Pursuant to Rule 416 under the Securities Act, the number of shares being registered shall be adjusted to include any additional shares that may become issuable as a result of stock splits, stock dividends or similar transactions. 183376179.78 true