Company: CIFRW
Filing Date: 2025-10-23
Form Type: 8-K/A
Source: 0001819989-25-000107
Chunk: 0

Company: Cipher Mining Inc.
Filing Date: 2025-10-23
Form: 8-K/A
Chunk 0
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### UNITED STATES

### SECURITIES AND EXCHANGE COMMISSION

#### WASHINGTON, D.C. 20549
<div align='center'>________________________________________________________</div>

#### FORM 8-K/A
<div align='center'>________________________________________________________</div>

### CURRENT REPORT
<div align='center'>Pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 3, 2025

________________________________________________________</div>

#### CIPHER MINING INC.
<div align='center'>(Exact name of Registrant as Specified in Its Charter)

________________________________________________________</div>

| Delaware                                 |     | 001-39625               |     |         85-1614529 |
| (State or Other Jurisdiction             
 of Incorporation)                        |     | -Commission File Number |     |      -IRS Employer 
 Identification No. |
| 1 Vanderbilt Avenue                      |     |                         |     |                    |
| Floor 54                                 |     |                         |     |                    |
| New York, New York                       |     |                         |     |              10017 |
| (Address of Principal Executive Offices) |     |                         |     |          -Zip Code |

<div align='center'>Registrant’s Telephone Number, Including Area Code: ( 332) 262-2300</div>

#### N/A
<div align='center'>(Former Name or Former Address, if Changed Since Last Report)

________________________________________________________</div>

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions:

| o |     | Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)                  |
| o |     | Soliciting material pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)                 |
| o |     | Pre-commencement communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b)) |
| o |     | Pre-commencement communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c)) |

<div align='center'>Securities registered pursuant to Section 12(b) of the Act:</div>

| Title of each class                                                                                                   |