Cipher Digital CFO exercises 17,108 RSUs

Cipher Digital Inc. Chief Financial Officer Gregory J.D.

Rhea-AI Filing Summary

Cipher Digital Inc. Chief Financial Officer Gregory J.D. Mumford exercised 17,108 restricted stock units into an equal number of common shares on March 31, 2026 at a conversion price of $0.00 per share. Each RSU delivers one share of common stock.

To cover tax obligations on this vesting, 7,114 common shares were disposed of at $12.87 per share through a tax-withholding transaction rather than an open-market sale. Following these transactions, Mumford directly holds 9,994 common shares. The RSUs vest in equal quarterly installments over a three-year period, subject to his continuous service.

Insider Trade Summary

17,108 shares exercised/converted

Exercise 3 txns

Insider Mumford Gregory J.D.

Role Chief Financial Officer

Type	Security	Shares	Price	Value
Exercise	Restricted Stock Units	17,108	$0.00	$0.00
Exercise	Common Stock	17,108	$0.00	$0.00
Exercise Price or Tax Liability	Common Stock	7,114	$12.87	$92K

Holdings After Transaction: Restricted Stock Units — 563,198 contracts (Direct); Common Stock — 9,994 shares (Direct)

Footnotes (2)

1. F1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.
2. F2. The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2026.

Key Figures

RSUs exercised: 17,108 units Shares withheld for taxes: 7,114 shares Tax-withholding price: $12.87 per share +2 more

5 metrics

RSUs exercised 17,108 units Restricted stock units converted to common stock on March 31, 2026

Shares withheld for taxes 7,114 shares Tax-withholding disposition at $12.87 per share

Tax-withholding price $12.87 per share Price applied to 7,114 shares for tax withholding

Shares held after transaction 9,994 shares Direct common stock holdings after March 31, 2026 transactions

Derivative exercise shares 17,108 shares ExerciseShares reported in transactionSummary for RSU conversion

Key Terms

Restricted Stock Units, tax-withholding disposition, continuous service, vesting date

4 terms

Restricted Stock Units financial

"Each restricted stock unit ("RSU") represents a contingent right to receive one share"

Restricted stock units are a type of company reward where employees are promised shares of stock, but they only fully own these shares after meeting certain conditions, like staying with the company for a set time. They matter because they can become valuable assets and are often used to motivate employees to help the company succeed.

tax-withholding disposition financial

"Payment of exercise price or tax liability by delivering securities"

A tax-withholding disposition is an event or transaction—such as selling or transferring securities, exercising options, or receiving compensation—that triggers a requirement to hold back part of the payment and remit it to tax authorities. It matters to investors because it reduces the cash they receive immediately and can change the timing and amount of taxable income, like a cashier taking a portion of your sale proceeds to pay taxes before you get the rest.

continuous service financial

"subject to the Reporting Person's continuous service on the applicable vesting date"

vesting date financial

"The first vesting date occurred on March 31, 2026"

FAQ

AI-generated questions and answers. How Rhea-AI works. Not financial advice.

What did CIFR CFO Gregory J.D. Mumford report in this Form 4?

CIFR CFO Gregory J.D. Mumford reported exercising 17,108 restricted stock units into common stock and a related tax-withholding share disposition. These actions reflect routine equity compensation vesting, not an open-market share purchase or sale.

How many Cipher Digital (CIFR) RSUs vested for the CFO on March 31, 2026?

On March 31, 2026, 17,108 restricted stock units vested for Cipher Digital’s CFO, converting into 17,108 common shares. Each RSU represents a contingent right to receive one share of the company’s common stock upon vesting.

What was the nature of the share disposition reported by CIFR’s CFO?

The disposition involved 7,114 common shares withheld at $12.87 per share to satisfy tax obligations on the RSU vesting. This tax-withholding disposition is not an open-market sale and is a standard mechanism in equity compensation programs.

How many Cipher Digital common shares does the CFO hold after these transactions?

After the March 31, 2026 transactions, the CFO directly holds 9,994 Cipher Digital common shares. This figure reflects the net position after the RSU conversion to common stock and the shares withheld to cover associated tax liabilities.

How do the CIFR CFO’s restricted stock units vest over time?

The restricted stock units vest in equal quarterly installments over three years on March 31, June 30, September 30 and December 15 of each year. Vesting continues only while the CFO maintains continuous service on each applicable vesting date.

AI-generated analysis. How Rhea-AI works. Not financial advice.

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Accepted by SEC EDGAR 04/07/2026 - 06:18 PM Learn about SEC filing dates

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

OMB APPROVAL

OMB Number:			3235-0287
Estimated average burden
hours per response:			0.5

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^*

Mumford Gregory J.D.

(Last) (First) (Middle)

C/O CIPHER DIGITAL INC.

1 VANDERBILT AVENUE, FLOOR 54

(Street)

NEW YORK NEW YORK 10017

(City) (State) (Zip)

UNITED STATES

(Country)

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

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

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

2a. Foreign Trading Symbol

3. Date of Earliest Transaction (Month/Day/Year)
03/31/2026

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

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

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

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	03/31/2026		M		17,108	A	(1)	17,108	D
Common Stock	03/31/2026		F		7,114	D	$12.87	9,994	D

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
Restricted Stock Units	(1)	03/31/2026		M			17,108	(2)	(2)	Common Stock	17,108	$0	563,198	D

Explanation of Responses:

1. Each restricted stock unit ("RSU") represents a contingent right to receive one share of the Issuer's Common Stock.

2. The RSUs vest in equal quarterly installments over a three-year period, on March 31, June 30, September 30 and December 15 of each year, subject to the Reporting Person's continuous service on the applicable vesting date. The first vesting date occurred on March 31, 2026.

Remarks:

	/s/ William Iwaschuk, Attorney-in-Fact for Gregory Mumford	04/07/2026
	** 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 4 (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.
* Form 4: SEC 1474 (03-26)