# EDGAR Filing Document

**Accession Number:** 0001884407
**File Stem:** 0001123292-25-000347
**Filing Date:** 2025-8
**Character Count:** 17490
**Document Hash:** 021d1485da046acb6e3ff2e7eef4f3a6
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001123292-25-000347.hdr.sgml**: 20250811

**ACCESSION NUMBER**: 0001123292-25-000347

**CONFORMED SUBMISSION TYPE**: SCHEDULE 13D/A

**PUBLIC DOCUMENT COUNT**: 2

**FILED AS OF DATE**: 20250811

**DATE AS OF CHANGE**: 20250811

**SUBJECT COMPANY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Cipher Mining Inc.
- **CENTRAL INDEX KEY:** 0001819989
- **STANDARD INDUSTRIAL CLASSIFICATION:** FINANCE SERVICES [6199]
- **ORGANIZATION NAME:** 09 Crypto Assets
- **EIN:** 851614529
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 005-91786
- **FILM NUMBER:** 251202643

**BUSINESS ADDRESS:**
- **STREET 1:** 1 VANDERBILT AVENUE
- **STREET 2:** FLOOR 54
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017
- **BUSINESS PHONE:** 332-262-2300

**MAIL ADDRESS:**
- **STREET 1:** 1 VANDERBILT AVENUE
- **STREET 2:** FLOOR 54
- **CITY:** NEW YORK
- **STATE:** NY
- **ZIP:** 10017

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** GOOD WORKS ACQUISITION CORP.
- **DATE OF NAME CHANGE:** 20200803
**FILED BY**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** Bitfury Top HoldCo B.V.
- **CENTRAL INDEX KEY:** 0001884407

**ORGANIZATION NAME:**
- **EIN:** 000000000
- **STATE OF INCORPORATION:** P7
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** SCHEDULE 13D/A

**BUSINESS ADDRESS:**
- **STREET 1:** STRAWINSKYLAAN 3051
- **CITY:** AMSTERDAM, NOORD-HOLLAND
- **STATE:** P7
- **ZIP:** 1077 ZX
- **BUSINESS PHONE:** 44.20.7710.5833

**MAIL ADDRESS:**
- **STREET 1:** STRAWINSKYLAAN 3051
- **CITY:** AMSTERDAM, NOORD-HOLLAND
- **STATE:** P7
- **ZIP:** 1077 ZX

## Ex-1

#### Exhibit 1

#### JOINT FILING AGREEMENT
&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

<br> In accordance with Rule 13d-1(k)(1) promulgated under the Securities Exchange Act of 1934, as amended, the undersigned hereby agree that they are jointly filing this statement on Schedule 13D. Each of them is responsible for the timely filing of such statement and any amendments thereto, and for the completeness and accuracy of the information concerning such person contained therein; but none of them is responsible for the completeness or accuracy of the information concerning the other persons making the filing, unless such person knows or has reason to believe that such information is inaccurate.

IN WITNESS WHEREOF, the undersigned hereby execute this Joint Filing Agreement as of the 11th day of August, 2025.

---

| | |
|:---|:---|
| **BITFURY HOLDING B.V.** | **BITFURY HOLDING B.V.** |
| By: | /s/ Stijn Ehren |
| <br> Name: | <br> Stijn Ehren |
| Title: | <br> Managing Director |

---

---

| | |
|:---|:---|
| **BITFURY TOP HOLDCO B.V.** | **BITFURY TOP HOLDCO B.V.** |
| By: | /s/ Stijn Ehren |
| <br> Name: | <br> Stijn Ehren |
| Title: | <br> Managing Director |

---

---

| | |
|:---|:---|
| **BITFURY GROUP LIMITED** | **BITFURY GROUP LIMITED** |
| By: | /s/ Valerijs Vavilovs |
| <br> Name: | <br> Valerijs Vavilovs |
| Title: | <br> Director |

---

---

| | |
|:---|:---|
| **V3 HOLDING LIMITED** | **V3 HOLDING LIMITED** |
| By: | /s/ Valerijs Vavilovs |
| <br> Name: | <br> Valerijs Vavilovs |
| Title: | <br> Director |

---

---

| | |
|:---|:---|
| **VALERIJS VAVILOVS** | **VALERIJS VAVILOVS** |
| By: | /s/ Valerijs Vavilovs |
| <br> Name: | <br> Valerijs Vavilovs |

---

### UNITED STATES SECURITIES AND EXCHANGE COMMISSION
**Washington, D.C. 20549**

## SCHEDULE 13D

### Under the Securities Exchange Act of 1934

**(Amendment No. 13)**

**Cipher Mining Inc.**

*(Name of Issuer)*

**Common Stock**

*(Title of Class of Securities)*

**17253J106**

*(CUSIP Number)*

**Stijn Ehren**<br>Strawinskylaan 3051<br>Amsterdam P7 1077ZX<br>31 6 29 94 48 88

*(Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications)*

**08/07/2025**

*(Date of Event Which Requires Filing of this Statement)*

| **CUSIP No.** | **17253J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Bitfury Top HoldCo B.V.** | Name of reporting person<br>**Bitfury Top HoldCo B.V.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**P7** | Citizenship or place of organization<br>**P7** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**48733104.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**48733104.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**48733104.00** | Aggregate amount beneficially owned by each reporting person<br>**48733104.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**12.4%** | Percent of class represented by amount in Row (11)<br>**12.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **17253J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Bitfury Holding B.V.** | Name of reporting person<br>**Bitfury Holding B.V.** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**P7** | Citizenship or place of organization<br>**P7** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**4821560.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**4821560.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**4821560.00** | Aggregate amount beneficially owned by each reporting person<br>**4821560.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**1.2%** | Percent of class represented by amount in Row (11)<br>**1.2%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **17253J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Bitfury Group Ltd** | Name of reporting person<br>**Bitfury Group Ltd** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**X0** | Citizenship or place of organization<br>**X0** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**48733104.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**48733104.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**48733104.00** | Aggregate amount beneficially owned by each reporting person<br>**48733104.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**12.4%** | Percent of class represented by amount in Row (11)<br>**12.4%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **17253J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**V3 Holding Ltd** | Name of reporting person<br>**V3 Holding Ltd** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**CAYMAN ISLANDS** | Citizenship or place of organization<br>**CAYMAN ISLANDS** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**90942259.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**90942259.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**90942259.00** | Aggregate amount beneficially owned by each reporting person<br>**90942259.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**23.1%** | Percent of class represented by amount in Row (11)<br>**23.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**CO** | Type of Reporting Person (See Instructions)<br>**CO** | |

---

| **CUSIP No.** | **17253J106** |

---

| | | | |
|:--|:--|:--|:--|
| 1 | Name of reporting person<br>**Vavilovs Valerijs** | Name of reporting person<br>**Vavilovs Valerijs** | |
| 2 | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | Check the appropriate box if a member of a Group (See Instructions)<br>[x] (a)<br>[ ] (b) | |
| 3 | SEC use only | SEC use only | |
| 4 | Source of funds (See Instructions)<br>**OO** | Source of funds (See Instructions)<br>**OO** | |
| 5 | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)<br>[ ] | |
| 6 | Citizenship or place of organization<br>**1R** | Citizenship or place of organization<br>**1R** | |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 7 | Sole Voting Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 8 | Shared Voting Power<br>**90942259.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 9 | Sole Dispositive Power<br>**0.00** |
| Number of Shares<br>Beneficially Owned by<br>Each Reporting Person With: | 10 | Shared Dispositive Power<br>**90942259.00** |
| 11 | Aggregate amount beneficially owned by each reporting person<br>**90942259.00** | Aggregate amount beneficially owned by each reporting person<br>**90942259.00** | |
| 12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)<br>[ ] | |
| 13 | Percent of class represented by amount in Row (11)<br>**23.1%** | Percent of class represented by amount in Row (11)<br>**23.1%** | |
| 14 | Type of Reporting Person (See Instructions)<br>**IN** | Type of Reporting Person (See Instructions)<br>**IN** | |

---

**Item 1. Security and Issuer**

**(a) Title of Class of Securities:**
Common Stock

**(b) Name of Issuer:**
Cipher Mining Inc.

**(c) Address of Issuer's Principal Executive Offices:**
1 Vanderbilt Avenue, Floor 54, New York, NY, 10017

This Amendment No. 13 ("Amendment No. 13") to Schedule 13D relates to shares of common stock, par value $0.001 per share (the "Common Stock"), of Cipher Mining Inc., a Delaware corporation (the "Issuer"), and amends and supplements the initial statement on Schedule 13D originally filed with the Securities and Exchange Commission (the "SEC") by the Reporting Persons on September 23, 2021, as amended by Amendment No. 1 to Schedule 13D filed with the SEC by the Reporting Persons on April 12, 2022, Amendment No. 2 to Schedule 13D filed with the SEC by the Reporting Persons on November 9, 2023, Amendment No. 3 to Schedule 13D filed with the SEC by the Reporting Persons on January 24, 2024, Amendment No. 4 to Schedule 13D filed with the SEC by the Reporting Persons on February 26, 2024, Amendment No. 5 to Schedule 13D filed with the SEC by the Reporting Persons on May 16, 2024, Amendment No. 6 to Schedule 13D filed with the SEC by the Reporting Persons on June 13, 2024, Amendment No. 7 to Schedule 13D filed with the SEC by the Reporting Persons on June 28, 2024, Amendment No. 8 to Schedule 13D filed with the SEC by the Reporting Persons on September 4, 2024, Amendment No. 9 to Schedule 13D filed with the SEC by the Reporting Persons on September 10, 2024, Amendment No. 10 to Schedule 13D filed with the SEC by the Reporting Persons on November 12, 2024, Amendment No. 11 to Schedule 13D filed with the SEC by the Reporting Persons on July 10, 2025 and Amendment No. 12 to Schedule 13D filed with the SEC by the Reporting Persons on July 22, 2025  (the "Original Schedule 13D," and as amended by Amendment No. 13, the "Schedule 13D"). Capitalized terms used but not defined in this Amendment No. 13 shall have the same meanings ascribed to them in the Original Schedule 13D. This Amendment No. 13 is being filed to reflect a change in the percentage of the Common Stock owned by the Reporting Persons as a result of a change in the number of shares of Common Stock outstanding.

### SIGNATURE

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Bitfury Top HoldCo B.V.

**Signature:** /s/ Stijn Ehren

**Name/Title:** Stijn Ehren, Managing Director

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Bitfury Holding B.V.

**Signature:** /s/ Stijn Ehren

**Name/Title:** Stijn Ehren, Managing Director

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Bitfury Group Ltd

**Signature:** /s/ Valerijs Vavilovs

**Name/Title:** Valerijs Vavilovs, Director

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** V3 Holding Ltd

**Signature:** /s/ Valerijs Vavilovs

**Name/Title:** Valerijs Vavilovs, Director

**Date:** 08/11/2025

After reasonable inquiry and to the best of my knowledge and belief, I certify that the information set forth in this statement is true, complete and correct.

**Reporting Person:** Vavilovs Valerijs

**Signature:** /s/ Valerijs Vavilovs

**Name/Title:** Valerijs Vavilovs

**Date:** 08/11/2025