Cipher Mining (CIFR) director Duda details direct and spousal share stakes

Rhea-AI Filing Summary

Cipher Mining Inc. director Thomas David Duda reported his initial ownership of company stock. The Form 3 shows he holds 13,818 shares of common stock directly and 12,871 shares indirectly through his spouse as of the reported date. This filing establishes his baseline insider ownership.

SEC Form 3

FORM 3

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

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

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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1. Name and Address of Reporting Person^*

Duda Thomas David

(Last) (First) (Middle)

C/O CIPHER MINING INC.

1 VANDERBILT AVENUE, FLOOR 54

(Street)

NEW YORK NY 10017

(City) (State) (Zip)

2. Date of Event Requiring Statement (Month/Day/Year)
02/11/2026

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

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

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

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

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

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

Table I - Non-Derivative Securities Beneficially Owned
1. Title of Security (Instr. 4)	2. Amount of Securities Beneficially Owned (Instr. 4)	3. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	4. Nature of Indirect Beneficial Ownership (Instr. 5)
Common Stock	13,818	D
Common Stock	12,871(1)	I	By spouse

Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security (Instr. 4)	2. Date Exercisable and Expiration Date (Month/Day/Year)		3. Title and Amount of Securities Underlying Derivative Security (Instr. 4)		4. Conversion or Exercise Price of Derivative Security	5. Ownership Form: Direct (D) or Indirect (I) (Instr. 5)	6. Nature of Indirect Beneficial Ownership (Instr. 5)
	Date Exercisable	Expiration Date	Title	Amount or Number of Shares

Explanation of Responses:

1. Represents shares owned directly by the Reporting Person's spouse.

Remarks:

Exhibit 24 - Power of Attorney.

	/s/ William Iwaschuk, Attorney-in-Fact for Thomas David Duda	02/23/2026
	** Signature of Reporting Person	Date
Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly.
* If the form is filed by more than one reporting person, see Instruction 5 (b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, see Instruction 6 for procedure.
Persons who respond to the collection of information contained in this form are not required to respond unless the form displays a currently valid OMB Number.

FAQ

What does Cipher Mining (CIFR) director Thomas David Duda report on this Form 3?

Thomas David Duda reports his initial ownership of Cipher Mining common stock. The filing records both his direct and indirect holdings, establishing a baseline of shares he beneficially owns as a company director for ongoing insider reporting purposes.

How many Cipher Mining (CIFR) shares does Thomas David Duda hold directly?

The Form 3 shows Thomas David Duda directly owns 13,818 shares of Cipher Mining common stock. This direct position reflects shares held in his own name and will be the reference point for any future changes in his direct ownership disclosures.

What indirect Cipher Mining (CIFR) holdings are reported for Thomas David Duda?

The filing reports 12,871 Cipher Mining common shares held indirectly by Duda through his spouse. A footnote explains these shares are owned by his spouse, and they are treated as indirect beneficial ownership for reporting and transparency under insider ownership rules.

Does this Cipher Mining (CIFR) Form 3 show any insider buying or selling?

No specific insider buying or selling is identified in this Form 3. It functions as an initial statement of beneficial ownership, listing existing direct and indirect holdings, rather than recording a new purchase, sale, or other transaction in Cipher Mining stock.

Why is Thomas David Duda’s Form 3 important for Cipher Mining (CIFR) investors?

The Form 3 gives investors a clear baseline of Duda’s ownership in Cipher Mining. Knowing how many shares a director beneficially owns improves transparency and allows investors to track any future changes through subsequent insider filings over time.