BLACK HILLS CORP /SD/

Regulatory Filings • Aug 23, 2021

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Filed Pursuant to Rule 433 Registration No. 333-240320

Pricing Term Sheet August 23, 2021

Black Hills Corporation

This communication should be read in conjunction with the preliminary prospectus supplement dated August 23, 2021 and the accompanying base prospectus. The information in this communication supersedes the information in the preliminary prospectus supplement and the accompanying base prospectus to the extent inconsistent with the information in the preliminary prospectus supplement and the accompanying base prospectus. In all other respects, this communication is qualified in its entirety by reference to the preliminary prospectus supplement and the accompanying base prospectus.

$600,000,000 1.037% Notes due 2024

Issuer:	Black Hills Corporation
Expected ratings (outlook)*:	S&P: BBB+ (stable) / Moody’s: Baa2 (stable) / Fitch: BBB+ (stable)
Title of securities:	1.037% Notes due 2024
Ranking:	Senior Unsecured
Aggregate principal amount offered:	$600,000,000
Trade date:	August 23, 2021
Settlement date (T+3)**:	August 26, 2021
Interest payment dates:	February 23 and August 23 of each year, commencing February 23, 2022
Record dates:	February 8 and August 8 of each year
Stated maturity date:	August 23, 2024
Initial price to public:	100.000% of principal amount
Annual interest rate:	1.037% per annum
Benchmark Treasury:	0.375 % due August 15, 2024
Benchmark Treasury Price / Yield:	99-26⅛ / 0.437 %
Spread to Benchmark Treasury:	+60 bps
Yield to maturity:	1.037%

Optional Redemption:
Make-whole call:	Callable at the greater of par and the make-whole (Treasury Rate plus 10 bps) at any time before

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	February 23, 2022, as described under the heading “Description of the Notes—Redemption” in the preliminary prospectus supplement.
Par call:	Callable at par at any time on or after February 23, 2022, as described under the heading “Description of the Notes—Redemption” in the preliminary prospectus supplement.
CUSIP / ISIN:	092113AU3 / US092113AU39
Joint Book-Running Managers:	U.S. Bancorp Investments, Inc. BMO Capital Markets Corp. Wells Fargo Securities, LLC BofA Securities, Inc. J.P. Morgan Securities LLC
Co-Managers:	Credit Suisse Securities (USA) LLC MUFG Securities Americas Inc. RBC Capital Markets, LLC Scotia Capital (USA) Inc.

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• These securities ratings have been provided by S&P, Moody’s and Fitch, respectively. None of these ratings is a recommendation to buy, sell or hold these securities. Each rating may be subject to revision or withdrawal at any time, and should be evaluated independently of any other rating.

** It is expected that delivery of the notes will be made against payment thereof on or about August 26, 2021, which will be the third business day following the date of the pricing of the notes (such settlement being referred to as “T+3”). Under Rule 15c6-1 under the Exchange Act, trades in the secondary market are generally required to settle in two business days, unless the parties to any such trade expressly agree otherwise. Accordingly, purchasers who wish to trade notes prior to the second business day before the settlement date will be required, by virtue of the fact that the notes will initially settle in T+3, to specify an alternate settlement arrangement at the time of any such trade to prevent a failed settlement.

The issuer has filed a registration statement (including a prospectus and related preliminary prospectus supplement) with the SEC for the offering to which this communication relates. Before you invest, you should read the prospectus and preliminary prospectus supplement in that registration statement and other documents the issuer has filed with the SEC for more complete information about the issuer and this offering. You may get these documents for free by visiting EDGAR on the SEC Web site at www.sec.gov. Alternatively, the issuer, any underwriter or any dealer participating in the offering will arrange to send you the prospectus if you request it by calling U.S. Bancorp Investments, Inc. toll-free at 1-877-558-2607, BMO Capital Markets Corp. toll-free at 1-800-414-3627, or Wells Fargo Securities, LLC toll-free at 1-800-645-3751.

ANY DISCLAIMERS OR OTHER NOTICES THAT MAY APPEAR BELOW ARE NOT APPLICABLE TO THIS COMMUNICATION AND SHOULD BE DISREGARDED. SUCH DISCLAIMERS OR OTHER NOTICES WERE AUTOMATICALLY GENERATED AS A RESULT OF THIS COMMUNICATION BEING SENT VIA BLOOMBERG OR ANOTHER EMAIL SYSTEM.

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