[Form 4] Cipher Mining Inc. Warrant Insider Trading Activity

Rhea-AI Filing Summary

Form 144 filing for MongoDB, Inc. (MDB) reports a planned sale of 2,000 common shares via Morgan Stanley Smith Barney. The transaction, valued at $500,000 (≈ $250 per share), is expected to occur on 31 Jul 2025 on the NASDAQ.

The company lists 81,714,313 shares outstanding, so the proposed sale represents only ~0.003 % of shares outstanding. All shares were obtained as restricted-stock grants between 2019-2021.

The filer—whose recent activity shows a 265-share sale for $54,603.25 on 2 Jul 2025—certifies that no undisclosed adverse information about MongoDB exists. No operational or earnings data accompany this notice; it solely concerns this secondary sale.

Insights

Securities Analyst

TL;DR: Small insider sale (0.003 % of float) disclosed; low market impact.

The Form 144 reveals a forthcoming divestiture of 2,000 MongoDB shares worth roughly $0.5 million. Relative to the 81.7 million shares outstanding, the sale is immaterial and falls well within routine Rule 144 clearances. Previous 265-share disposal further supports a gradual liquidity strategy. No information suggests corporate distress; the standard Rule 144 certification affirms absence of undisclosed negative news. Overall, I view the filing as routine and not price-moving.

SEC Form 4

FORM 4

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

STATEMENT OF CHANGES IN BENEFICIAL OWNERSHIP

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934
or Section 30(h) of the Investment Company Act of 1940

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Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

Check this box to indicate that a transaction was made pursuant to a contract, instruction or written plan for the purchase or sale of equity securities of the issuer that is intended to satisfy the affirmative defense conditions of Rule 10b5-1(c). See Instruction 10.

1. Name and Address of Reporting Person^*

V3 Holding Ltd

(Last) (First) (Middle)

4TH FL HARBOUR PL 103 S CHURCH ST, 10240

(Street)

GRAND CAYMAN E9 KY1-1002

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Cipher Mining Inc. [ CIFR ]

5. Relationship of Reporting Person(s) to Issuer
(Check all applicable)

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

3. Date of Earliest Transaction (Month/Day/Year)
07/29/2025

4. If Amendment, Date of Original Filed (Month/Day/Year)

6. Individual or Joint/Group Filing (Check Applicable Line)

	Form filed by One Reporting Person
X	Form filed by More than One Reporting Person

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned
1. Title of Security (Instr. 3)	2. Transaction Date (Month/Day/Year)	2A. Deemed Execution Date, if any (Month/Day/Year)	3. Transaction Code (Instr. 8)		4. Securities Acquired (A) or Disposed Of (D) (Instr. 3, 4 and 5)			5. Amount of Securities Beneficially Owned Following Reported Transaction(s) (Instr. 3 and 4)	6. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	7. Nature of Indirect Beneficial Ownership (Instr. 4)
			Code	V	Amount	(A) or (D)	Price
Common Stock	07/29/2025		S		66,049	D	$6.06(1)	91,312,243	I	See Footnote(3)(4)
Common Stock	07/30/2025		S		369,984	D	$5.61(2)	90,942,259	I	See Footnote(3)(4)

Table II - Derivative Securities Acquired, Disposed of, or Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 3)	2. Conversion or Exercise Price of Derivative Security	3. Transaction Date (Month/Day/Year)	3A. Deemed Execution Date, if any (Month/Day/Year)	4. Transaction Code (Instr. 8)		5. Number of Derivative Securities Acquired (A) or Disposed of (D) (Instr. 3, 4 and 5)		6. Date Exercisable and Expiration Date (Month/Day/Year)		7. Title and Amount of Securities Underlying Derivative Security (Instr. 3 and 4)		8. Price of Derivative Security (Instr. 5)	9. Number of derivative Securities Beneficially Owned Following Reported Transaction(s) (Instr. 4)	10. Ownership Form: Direct (D) or Indirect (I) (Instr. 4)	11. Nature of Indirect Beneficial Ownership (Instr. 4)
				Code	V	(A)	(D)	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

1. Name and Address of Reporting Person^*

V3 Holding Ltd

(Last) (First) (Middle)

4TH FL HARBOUR PL 103 S CHURCH ST, 10240

(Street)

GRAND CAYMAN E9 KY1-1002

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Bitfury Top HoldCo B.V.

(Last) (First) (Middle)

STRAWINSKYLAAN 3051

(Street)

AMSTERDAM P7 1077 ZX

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Bitfury Holding B.V.

(Last) (First) (Middle)

STRAWINSKYLAAN 3051

(Street)

AMSTERDAM P7 1077 ZX

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Vavilovs Valerijs

(Last) (First) (Middle)

2102 CHEDDAR CHEESE TOWER, PO BOX 712650

(Street)

DUBAI C0

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

1. Name and Address of Reporting Person^*

Bitfury Group Ltd

(Last) (First) (Middle)

FIELDFISHER RIVERBANK HOUSE, 2 SWAN LANE

(Street)

LONDON X0 EC4R 3TT

(City) (State) (Zip)

Relationship of Reporting Person(s) to Issuer

	Director	X	10% Owner
	Officer (give title below)		Other (specify below)

Explanation of Responses:

1. The price reported in Column 4 represents a weighted average sales price of $6.0598. These shares were sold in multiple transactions at prices ranging from $6.00 to $6.19, inclusive. The reporting person undertakes to provide to Cipher Mining Inc., any security holder of Cipher Mining Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each price within the ranges set forth in footnotes 1 and 2 of this Form 4.

2. The price reported in Column 4 represents a weighted average sales price of $5.6122. These shares were sold in multiple transactions at prices ranging from $5.50 to $5.85, inclusive.

3. Bitfury Holding B.V. is the record holder of 4,821,560 shares of Common Stock. Bitfury Top HoldCo B.V. ("Bitfury Top HoldCo") is the record holder of 43,911,544 shares of Common Stock and is the sole owner of Bitfury Holding B.V. As a result, Bitfury Top HoldCo may be deemed to share beneficial ownership of the shares of Common Stock held by Bitfury Holding B.V. V3 Holding Limited ("V3") is the direct holder of 42,209,155 shares of Common Stock. Valerijs Vavilovs is the sole owner of V3, which is the majority owner of Bitfury Group Limited ("BGL"). BGL is the sole owner of Bitfury Top HoldCo. [Continued]

4. [Cont.] 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 may be deemed to have beneficial ownership of the Common Stock owned by V3. Each of Mr. Vavilovs, V3, Bitfury Top HoldCo, BGL and Bitfury Holding B.V. disclaim beneficial ownership of such shares except to the extent of their respective pecuniary interests therein.

	Stijn Ehren, Managing Director of Bitfury Top HoldCo B.V., By: /s/ Stijn Ehren	07/31/2025
	Stijn Ehren, Managing Director of Bitfury Holding B.V., By: /s/ Stijn Ehren	07/31/2025
	Valerijs Vavilovs, Director of Bitfury Group Limited, By: /s/ Valerijs Vavilovs	07/31/2025
	Valerijs Vavilovs, Director of V3 Holding Limited, By: /s/ Valerijs Vavilovs	07/31/2025
	Valerijs Vavilovs, By: /s/ Valerijs Vavilovs	07/31/2025
	** Signature of Reporting Person	Date
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