Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124285
Chunk: 4

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 4
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 changed since those dates.

You should not consider any information included or incorporated by reference in this prospectus supplement
or the accompanying prospectus to be legal, tax or investment advice. You should consult your own counsel, accountant and other advisors for legal, tax, business, financial and related advice regarding any purchase of the notes. Neither we nor any
of the underwriters makes any representation regarding the legality of an investment in the notes by any person under applicable investment or similar laws.

This prospectus supplement and the accompanying base prospectus do not constitute an offer to sell or the solicitation of an offer to purchase the notes
described herein in any jurisdiction or to any person where the offer or solicitation is not permitted.

About This Prospectus Supplement

This document is in two parts. The first part is this prospectus supplement, which describes the specific terms of this offering and also adds to and updates
information contained in the accompanying prospectus The second part contains an accompanying primary base prospectus relating to sales of securities by Cipher Mining Inc. and gives more general information, some of which may not apply to this
offering. Generally, when we refer to the “prospectus,” we are referring to this prospectus supplement and the accompanying base prospectus combined. Unless otherwise indicated, capitalized terms used but not defined herein have the
meaning assigned to them in the registration statement of which this prospectus supplement forms a part. You should read the entire prospectus supplement, as well as the accompanying base prospectus and the documents incorporated by reference that
are described under “Incorporation of Certain Information by Reference” in this prospectus supplement. To the extent that any statement we make in this prospectus supplement is inconsistent with statements made in the accompanying base
prospectus or any documents incorporated by reference herein, you should rely on the information contained in this prospectus supplement, which will be deemed to modify or supersede those made in the accompanying prospectus or documents incorporated
by reference herein or therein.

You should rely only on the information included or incorporated by reference in this prospectus supplement and the
accompanying base prospectus prepared by us or on behalf of us or to which we have referred you. Neither we, the underwriters nor any of our or their representatives have authorized any other person to provide you with information different from
that included or incorporated by reference in this prospectus supplement and the accompanying base prospectus. If anyone provides you with different or inconsistent information, you should not rely on it. Neither we nor the