[Form 4] Greenidge Generation Holdings Inc. Insider Trading Activity

Rhea-AI Filing Summary

Greenidge Generation Holdings Inc. (GREE)

The 15,000 units are restricted stock units granted under Greenidge’s Third Amended and Restated 2021 Equity Incentive Plan for service as chair of a special committee of the board of directors. Each RSU represents a contingent right to receive one share of Class A Common Stock and will vest six months after the grant date. The report notes that it is being filed late due to an inadvertent administrative oversight, and states this was not an error by the reporting person.

11/17/2025 - 05:24 PM

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
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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^*

Zeynel Charles M.

(Last) (First) (Middle)

C/O GREENIDGE GENERATION HOLDINGS INC.

1159 PITTSFORD-VICTOR ROAD, SUITE 240

(Street)

PITTSFORD NY 14534

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Greenidge Generation Holdings Inc. [ GREE ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/09/2025

4. 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 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
Class A Common Stock	11/09/2025(1)(2)		A		15,000	A	$0	83,493	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

Explanation of Responses:

1. This Form 4 is being filed late due to an inadvertent administrative oversight and not any error of the Reporting Person.

2. Represents restricted stock units ("RSUs") granted pursuant to the Issuer's Third Amended and Restated 2021 Equity Incentive Plan for service as chair of a special committee of the Issuer's Board of Directors. Each RSU represents a contingent right to receive one share of the Issuer's Class A Common Stock. The RSUs vest six months after the grant date.

Remarks:

	/s/ Charles M. Zeynel	11/17/2025
	** 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.

FAQ

What insider transaction did Greenidge Generation Holdings Inc. (GREE) report?

The filing reports that a director of Greenidge Generation Holdings Inc. (GREE) acquired 15,000 shares of Class A Common Stock on 11/09/2025 through a restricted stock unit grant.

How many GREE shares does the director own after this transaction?

After the reported transaction, the director beneficially owns 83,493 shares of Greenidge Generation Holdings Inc. Class A Common Stock in direct ownership.

What are the terms of the 15,000 restricted stock units granted by GREE?

The 15,000 restricted stock units (RSUs) were granted under Greenidge’s Third Amended and Restated 2021 Equity Incentive Plan for service as chair of a special committee of the board. Each RSU represents a contingent right to receive one share of Class A Common Stock and vests six months after the grant date.

At what price were the GREE shares reported in the Form 4 transaction?

The 15,000 GREE Class A Common Stock shares acquired in the transaction are shown with a price of $0, indicating an equity award rather than a market purchase.

Why was this Form 4 for Greenidge Generation Holdings Inc. filed late?

The explanation section states that the report is being filed late due to an inadvertent administrative oversight and not any error of the reporting person.

What role does the reporting person have at Greenidge Generation Holdings Inc. (GREE)?

The filing identifies the reporting person as a director of Greenidge Generation Holdings Inc., and the RSU grant relates to service as chair of a special committee of the board of directors.