Company: CIFRW
Filing Date: 2025-05-23
Form Type: 424B5
Source: 0001193125-25-125868
Chunk: 20

Company: Cipher Mining Inc.
Filing Date: 2025-05-23
Form: 424B5
Chunk 20
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 hereof, and all of which are subject to change or differing interpretations, possibly with retroactive effect. We cannot assure you that a change in law will not significantly alter the tax considerations that we describe in this summary. We have not sought any ruling from the Internal Revenue Service (“IRS”) with respect to the statements made and the positions and conclusions described in the following summary, and there can be no assurance that the IRS or a court will agree with such statements, positions, and conclusions. This summary does not address all aspects of U.S. federal income taxation that may be relevant to non-U.S.holders in light of their personal circumstances. In addition, this summary does not address the impact of the Medicare tax on certain net investment income, U.S. federal estate or gift tax laws, any U.S. state or local or non-U.S.tax laws or any tax treaties. This summary also does not address all U.S. federal income tax considerations that may be relevant to particular non-U.S.holders in light of their personal circumstances or that may be relevant to certain categories of investors that may be subject to special rules, such as:

| • |     | banks, insurance companies or other financial institutions; |

| • |     | tax-exempt or governmental organizations; |

| • |     | tax-qualified retirement plans; |

| • |     | “qualified foreign pension funds” as defined in Section 897(1)(2) of the Code (or any entities all 
 of the interests of which are held by a qualified foreign pension fund);                           |

| • |     | dealers in securities or foreign currencies; |

| • |     | persons whose functional currency is not the U.S. dollar; |

| • |     | traders in securities that use the                                        
 mark-to-market method of accounting for U.S. federal income tax purposes; |

| • |     | “controlled foreign corporations,” “passive foreign investment companies,” and corporations 
 that accumulate earnings to avoid U.S. federal income tax;                                  |

| • |     | entities or arrangements treated as partnerships or pass-through entities for U.S. federal income tax purposes or 
 holders of interests therein;                                                                                     |

| • |     | persons deemed to sell our common stock under the constructive sale provisions of the Code; |

| • |     | persons that acquired our common stock through the exercise of employee stock options or otherwise as 
 compensation or through a tax-qualified retirement plan;                                              |

| • |     | persons that hold our common stock as part of