Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124290
Chunk: 21

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 21
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 TAX LAWS OR UNDER THE LAWS OF ANY U.S. STATE OR LOCAL OR NON-U.S.TAXING JURISDICTION, OR UNDER ANY APPLICABLE INCOME TAX TREATY. S-13

Non-U.S.Holder Defined For purposes of this discussion, a “non-U.S.holder” is a beneficial owner of our common stock that is not for U.S. federal income tax purposes a partnership or any of the following:

| • |     | an individual who is a citizen or resident of the United States; |

| • |     | a corporation (or other entity treated as a corporation for U.S. federal income tax purposes) created or 
 organized in or under the laws of the United States, any state thereof or the District of Columbia;      |

| • |     | an estate the income of which is subject to U.S. federal income tax regardless of its source; or |

| • |     | a trust (i) the administration of which is subject to the primary supervision of a U.S. court and which has                                                                                                                        
 one or more “United States persons” (within the meaning of Section 7701(a)(30) of the Code) who have the authority to control all substantial decisions of the trust or (ii) which has made a valid election under applicable U.S. 
 Treasury regulations to be treated as a United States person.                                                                                                                                                                      |

If an entity or arrangement treated as a partnership for U.S. federal income tax purposes holds our common stock, the tax treatment of a partner in such partnership generally will depend upon the status of the partner, the activities of such partnership and certain determinations made at the partner level. Accordingly, we urge partners in entities or arrangements treated as partnerships for U.S. federal income tax purposes considering the purchase of our common stock to consult with their own tax advisors regarding the U.S. federal income tax considerations of the purchase, ownership and disposition of our common stock by such partnership. Distributions Distributions of cash or other property on our common stock, if any, will constitute dividends for U.S. federal income tax purposes to the extent paid from our current or accumulated earnings and profits, as determined under U.S. federal income tax principles. To the extent those distributions exceed our current and accumulated earnings and profits, the distributions will be treated as a non-taxablereturn of capital to the extent of the non-U.S.holder’s tax basis in our common stock and thereafter as capital gain from the sale or exchange of such common stock.