Company: CIFRW
Filing Date: 2025-05-22
Form Type: 424B5
Source: 0001193125-25-124285
Chunk: 59

Company: Cipher Mining Inc.
Filing Date: 2025-05-22
Form: 424B5
Chunk 59
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        | 0.0000 |
| May 15, 2030       |     |             | 67.4763 |     |       | 25.0775 |     |       |  0.0000 |     |       |  0.0000 |     |       |  0.0000 |     |       |  0.0000 |     |        | 0.0000 |     |        | 0.0000 |     |        | 0.0000 |     |        | 0.0000 |

If such make-whole fundamental change effective date or stock price is not set forth in the table above, then:

| • |     | if such stock price is between two stock prices in the table above or the make-whole fundamental change effective                                                                                                                                       
 date is between two dates in the table above, then the number of additional shares will be determined by straight-line interpolation between the numbers of additional shares set forth for the higher and lower stock prices in the table above or the 
 earlier and later dates in the table above, based on a 365- or 366-day year, as applicable; and                                                                                                                                                         |

| • |     | if the stock price is greater than $50.00 (subject to adjustment in the same manner as the stock prices set forth                                                                                                                      
 in the column headings of the table above are adjusted, as described below under the caption “—Adjustment of Stock Prices and Number of Additional Shares”), or less than $3.42 (subject to adjustment in the same manner), per share, 
 then no additional shares will be added to the conversion rate.                                                                                                                                                                        |

Notwithstanding anything to the contrary, in no event will the conversion rate be increased to an amount that exceeds 292.3976 shares of our common stock per $1,000 principal amount of notes, which amount is subject to adjustment in the same manner as, and at the same time and for the same events for which, the conversion rate is required to be adjusted pursuant to the provisions described above under the caption “—Conversion Rate Adjustments—Generally.” For the avoidance of doubt, calling any notes for redemption will constitute a make-whole fundamental change only with respect to the notes called for redemption, and not with respect to the notes not called for redemption. Accordingly, if we elect to redeem less than all of the outstanding notes, then holders of the notes not called for redemption will not be entitled to an increased conversion rate for