Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124290
Chunk: 6

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 6
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 elsewhere in this prospectus supplement and under “Risk Factors” in our most recent Annual Report on Form 10-Kand any subsequent Quarterly Reports on Form 10-Qand any current reports on Form 8-Kfiled subsequent to the end of the year covered by such annual report, which were incorporated by reference into this prospectus supplement in their entirety, as well as any amendments thereto S-iv

reflected in subsequent filings with the SEC. Should one or more of these risks or uncertainties materialize, or should any of the assumptions prove incorrect, actual results may vary in material
respects from those projected in these forward-looking statements. We undertake no obligation to update or revise any forward-looking statements, whether as a result of new information, future events or otherwise, except as may be required under
applicable securities laws.

You should read this prospectus supplement, the accompanying base prospectus and the documents incorporated
by reference herein and therein and any free writing prospectuses that we have authorized for use in this offering with the understanding that our actual future results, levels of activity, performance and events and circumstances may be materially
different from what we expect.

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SUMMARY

This summary contains basic information about us and the offering. Because it is a summary, it does not contain all the information that you should consider before investing in our common stock. You should read and carefully consider this entire prospectus supplement, the accompanying base prospectus and the documents incorporated by reference herein and therein before making an investment decision, especially the information presented under the heading “Risk Factors,” “Cautionary Note Regarding Forward-Looking Statements” and “Management’s Discussion and Analysis of Financial Condition and Results of Operations” included in our Annual Report on Form 10-Kfor the year ended December 31, 2024, our Quarterly Report on Form 10-Qfor the auarter ended March 31, 2025 and our consolidated financial statements and the accompanying notes incorporated by reference herein.

Unless otherwise stated or the context otherwise indicates, all references in this prospectus to the “Company,” “Cipher,” “Cipher Mining,” “we,” “us” and “our” refer to Cipher Mining Inc. and its consolidated subsidiaries, unless otherwise indicated.

Our Company

We develop and operate industrial-scale data centers. Our active portfolio and development pipeline is expected to consist of more than 3.0 GW
of capacity across 11 sites. We currently operate one wholly-owned 207 MW bitcoin mining data center, have equity investments in three partially-owned