Insider filing report for Changes in Beneficial Ownership
- Schedule 13G & 13D forms are used to report a party's ownership of stock which exceeds 5% of a company's total stock issue.
- Schedule 13G is a shorter version of Schedule 13D with fewer reporting requirements.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
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- Peter Lynch
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SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549 |
SCHEDULE 13D
Under the Securities Exchange Act of 1934
(Amendment No. 12)*
|
Cipher Mining Inc. (Name of Issuer) |
Common Stock (Title of Class of Securities) |
17253J106 (CUSIP Number) |
Stijn Ehren Strawinskylaan 3051, Amsterdam, P7, 1077ZX 31 6 29 94 48 88 (Name, Address and Telephone Number of Person Authorized to Receive Notices and Communications) |
07/22/2025 (Date of Event Which Requires Filing of This Statement) |
If the filing person has previously filed a statement on Schedule 13G to report the acquisition that is the subject of this Schedule 13D, and is filing this schedule because of §§ 240.13d-1(e), 240.13d-1(f) or 240.13d-1(g), check the following box.


The information required on the remainder of this cover page shall not be deemed to be “filed” for the purpose of Section 18 of the
Securities Exchange Act of 1934 (“Act”) or otherwise subject to the liabilities of that section of the Act but shall be subject to all other
provisions of the Act (however, see the Notes).
SCHEDULE 13D
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CUSIP No. | 17253J106 |
1 |
Name of reporting person
Bitfury Top HoldCo B.V. | ||||||||
2 | Check the appropriate box if a member of a Group (See Instructions)
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3 | SEC use only | ||||||||
4 |
Source of funds (See Instructions)
OO | ||||||||
5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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6 | Citizenship or place of organization
NETHERLANDS
| ||||||||
Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
11 | Aggregate amount beneficially owned by each reporting person
48,733,104.00 | ||||||||
12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
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13 | Percent of class represented by amount in Row (11)
13.1 % | ||||||||
14 | Type of Reporting Person (See Instructions)
CO |
SCHEDULE 13D
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CUSIP No. | 17253J106 |
1 |
Name of reporting person
Bitfury Holding B.V. | ||||||||
2 | Check the appropriate box if a member of a Group (See Instructions)
![]() ![]() | ||||||||
3 | SEC use only | ||||||||
4 |
Source of funds (See Instructions)
OO | ||||||||
5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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6 | Citizenship or place of organization
NETHERLANDS
| ||||||||
Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
11 | Aggregate amount beneficially owned by each reporting person
4,821,560.00 | ||||||||
12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
![]() | ||||||||
13 | Percent of class represented by amount in Row (11)
1.3 % | ||||||||
14 | Type of Reporting Person (See Instructions)
CO |
SCHEDULE 13D
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CUSIP No. | 17253J106 |
1 |
Name of reporting person
Bitfury Group Ltd | ||||||||
2 | Check the appropriate box if a member of a Group (See Instructions)
![]() ![]() | ||||||||
3 | SEC use only | ||||||||
4 |
Source of funds (See Instructions)
OO | ||||||||
5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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6 | Citizenship or place of organization
UNITED KINGDOM
| ||||||||
Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
11 | Aggregate amount beneficially owned by each reporting person
48,733,104.00 | ||||||||
12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
![]() | ||||||||
13 | Percent of class represented by amount in Row (11)
13.1 % | ||||||||
14 | Type of Reporting Person (See Instructions)
CO |
SCHEDULE 13D
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CUSIP No. | 17253J106 |
1 |
Name of reporting person
V3 Holding Ltd | ||||||||
2 | Check the appropriate box if a member of a Group (See Instructions)
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3 | SEC use only | ||||||||
4 |
Source of funds (See Instructions)
OO | ||||||||
5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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6 | Citizenship or place of organization
CAYMAN ISLANDS
| ||||||||
Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
11 | Aggregate amount beneficially owned by each reporting person
93,378,292.00 | ||||||||
12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
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13 | Percent of class represented by amount in Row (11)
25.2 % | ||||||||
14 | Type of Reporting Person (See Instructions)
CO |
SCHEDULE 13D
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CUSIP No. | 17253J106 |
1 |
Name of reporting person
Vavilovs Valerijs | ||||||||
2 | Check the appropriate box if a member of a Group (See Instructions)
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3 | SEC use only | ||||||||
4 |
Source of funds (See Instructions)
OO | ||||||||
5 |
Check if disclosure of legal proceedings is required pursuant to Items 2(d) or 2(e)
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6 | Citizenship or place of organization
GEORGIA (COUNTRY)
| ||||||||
Number of Shares Beneficially Owned by Each Reporting Person With: |
| ||||||||
11 | Aggregate amount beneficially owned by each reporting person
93,378,292.00 | ||||||||
12 | Check if the aggregate amount in Row (11) excludes certain shares (See Instructions)
![]() | ||||||||
13 | Percent of class represented by amount in Row (11)
25.2 % | ||||||||
14 | Type of Reporting Person (See Instructions)
IN |
SCHEDULE 13D
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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,
NEW YORK
, 10017. | |
Item 1 Comment:
This Amendment No. 12 ("Amendment No. 12") 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 and Amendment No. 11 to Schedule 13D filed with the SEC by the Reporting Persons on July 10, 2025 (the "Original Schedule 13D," and as amended by Amendment No. 12, the "Schedule 13D"). Capitalized terms used but not defined in this Amendment No. 12 shall have the same meanings ascribed to them in the Original Schedule 13D. | ||
Item 4. | Purpose of Transaction | |
Item 4 of the Schedule 13D is hereby amended and supplemented by adding the following: Termination of Observer Agreement On July 22, 2025, Bitfury Holding, Bitfury Top HoldCo and the Issuer mutually terminated the Observer Agreement described in Amendment No. 1 to Schedule 13D filed by the Reporting Persons on April 12, 2022. As a result of the termination of the Observ
er Agreement, Bitfury no longer has the right to (i) designate a representative to attend meetings of the board of directors of the Issuer and any committees thereof, in a non-voting observer capacity or (ii) receive certain information about the Issuer upon request. During the term of the Observer Agreement, Bitfury never exercised either the board observer right or the information rights. "Passive" Investor Certification The Reporting Persons hereby certify that the shares of Common Stock referred to herein that are beneficially owned by the Reporting Persons are not held for the purpose of or with the effect of changing or influencing the control of the Issuer and are not held in connection with or as a participant in any transaction having that purpose or effect. | ||
Item 5. | Interest in Securities of the Issuer | |
(a) | Item 5(a) of the Schedule 13D is hereby amended and restated to read as follows: The information in rows 11 and 13 of each of the cover pages of this Amendment No. 12 is incorporated by reference herein. Such information sets forth, as of July 22, 2025, the aggregate number of shares of Common Stock of the Issuer and percentage of Common Stock of the Issuer beneficially owned by each of the Reporting Persons, based on 371,213,387 shares of Common Stock outstanding as of May 5, 2025, as disclosed in the Issuer's Quarterly Report on Form 10-Q filed with the SEC on May 6, 2025. | |
(b) | Item 5(b) of the Schedule 13D is hereby amended and restated to read as follows: The information in rows 7 through 10 of each of the cover pages of this Amendment No. 12 is incorporated by reference herein. Bitfury Holding is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo is the record holder of 43,911,544 shares of Common Stock and is the sole owner of Bitfury Holding. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding. V3 is the direct holder of 44,645,188 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of BGL. BGL is the sole owner of Bitfury Top HoldCo. As a result of the foregoing relationships, each of Mr. Vavilovs, V3 and BGL may be deemed to share beneficial ownership of the Common Stock beneficially owned by Bitfury Top Holdco, and Mr. Vavilovs is deemed to share beneficial ownership of the Common Stock beneficially owned by V3. | |
(c) | Item 5(c) of the Schedule 13D is hereby amended and supplemented as follows: The Reporting Persons have engaged in the following open market sales during the past sixty days. On July 15, 2025, V3 sold 289,145 shares of Common Stock at prices ranging from $6.00 to $6.3801, for a volume-weighted average price per share of $6.06. On July 14, 2025, V3 sold 667,010 shares of Common Stock at prices ranging from $6.00 to $6.1952, for a volume-weighted average price per share of $6.11. On July 11, 2025, V3 sold 432,990 shares of Common Stock at prices ranging from $6.05 to $ 6.5081, for a volume-weighted average price per share of $6.13. On July 10, 2025, V3 sold 600,000 shares of Common Stock at prices ranging from $6.00 to $6.45, for a volume-weighted average price per share of $6.27. | |
Item 7. | Material to be Filed as Exhibits. | |
Item 7 of the Schedule 13D is hereby amended and supplemented as follows: Exhibit 1: Joint Filing Agreement, dated as of July 22, 2025 |
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.
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