Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124285
Chunk: 93

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 93
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| • |     | persons subject to any alternative minimum tax; |

| • |     | persons required for U.S. federal income tax purposes to conform the timing of income accruals with respect to 
 the notes to their financial statements; and                                                                   |

| • |     | former U.S. citizens or long-term residents of the United States. |

If an entity or arrangement treated as a partnership for U.S. federal income tax purposes holds notes or our common stock, the U.S. federal income tax treatment of a partner of the partnership generally will depend upon the status of the partner and the activities of the partnership and upon certain determinations made at the partner S-60

level. Partnerships considering an investment in the notes or our common stock received upon conversion of a note and partners therein should consult their own tax advisors regarding the U.S. federal income tax consequences of acquiring, owning, converting and disposing of the notes and owning and disposing of our common stock received upon conversion of a note. IF YOU ARE CONSIDERING THE PURCHASE OF NOTES, YOU SHOULD CONSULT YOUR TAX ADVISOR REGARDING THE APPLICATION OF THE U.S. FEDERAL INCOME TAX LAWS TO YOUR PARTICULAR SITUATION AS WELL AS ANY TAX CONSEQUENCES OF THE ACQUISITION, OWNERSHIP, CONVERSION AND DISPOSITION OF THE NOTES OR THE OWNERSHIP AND DISPOSITION OF COMMON STOCK RECEIVED UPON CONVERSION OF A NOTE UNDER OTHER U.S. FEDERAL TAX LAWS OR UNDER THE LAWS OF ANY STATE, LOCAL OR NON-U.S.JURISDICTION OR UNDER ANY APPLICABLE INCOME TAX TREATY. Certain Additional Payments In certain circumstances (see “Description of Notes—Events of Default—Special Interest as Sole Remedy for Certain Reporting Defaults”), we may be obligated to pay amounts on the notes that are in excess of stated interest on the notes. These potential payments may implicate the provisions of the U.S. Treasury regulations relating to “contingent payment debt instruments.” However, we do not intend to treat the possibility of paying such additional amounts as causing the notes to be treated as contingent payment debt instruments. Our position is binding on a holder unless such holder discloses its contrary position in the manner required by applicable U.S. Treasury regulations. However, our position is not binding on the IRS, and it is possible that the IRS may take a different position, in which case, if the IRS’s position is sustained, you will generally be required to (