Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124285
Chunk: 144

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 144
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 change in the covenants described in this prospectus or in the indenture with 
 respect to the debt securities;                                                                               |

| • |     | any depositaries, interest rate calculation agents, exchange rate calculation agents or other agents with respect 
 to the debt securities;                                                                                           |

| • |     | the provisions, if any, relating to conversion or exchange of any debt securities of such series, including if                                                                                                                                      
 applicable, the conversion or exchange price and period, provisions as to whether conversion or exchange will be mandatory, the events requiring an adjustment of the conversion or exchange price and provisions affecting conversion or exchange; |

| • |     | any other terms of the debt securities, which may supplement, modify or delete any provision of the indenture as                                                             
 it applies to that series, including any terms that may be required under applicable law or regulations or advisable in connection with the marketing of the securities; and |

| • |     | whether any of our direct or indirect subsidiaries will guarantee the debt securities of that series, including 
 the terms of subordination, if any, of such guarantees.                                                         |

15

We may issue debt securities that provide for an amount less than their stated principal amount to be due
and payable upon declaration of acceleration of their maturity pursuant to the terms of the indenture. We will provide you with information on the federal income tax considerations and other special considerations applicable to any of these debt
securities in the applicable prospectus supplement.

If we denominate the purchase price of any of the debt securities in a foreign currency or currencies
or a foreign currency unit or units, or if the principal of and any premium and interest on any series of debt securities is payable in a foreign currency or currencies or a foreign currency unit or units, we will provide you with information on the
restrictions, elections, general tax considerations, specific terms and other information with respect to that issue of debt securities and such foreign currency or currencies or foreign currency unit or units in the applicable prospectus
supplement.

Transfer and Exchange

Each debt
security will be represented by either one or more global securities registered in the name of The Depository Trust Company, or the Depositary, or a nominee of the Depositary (we will refer to any debt security represented by a global debt security
as a “book-entry debt security”), or a certificate issued in definitive registered form (we will refer to any debt security represented by a certificated security as a “certificated debt security”) as set forth in the applicable