[Form 4] Capstone Green Energy Holdings, Inc. Insider Trading Activity

Rhea-AI Filing Summary

Capstone Green Energy Holdings, Inc. (CGEH) filed a Form 4 reporting an insider share purchase by Director and Interim CFO John P. Miller. On 11/25/2025, Miller purchased 25,000 shares of voting common stock in a private offering at $2 per share. After this transaction, he beneficially owns 51,807 shares of voting common stock.

This total includes 4,149 shares underlying restricted stock units that fully vest one year from their grant date, subject to continued service, and 12,658 shares underlying restricted stock units that fully vest on February 12, 2026. The filing indicates the holdings are owned directly.

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

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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^*

Miller John P.

(Last) (First) (Middle)

C/O CAPSTONE GREEN ENERGY HOLDINGS, INC.

16640 STAGG STREET

(Street)

VAN NUYS CA 91406

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Capstone Green Energy Holdings, Inc. [ CGEH ]

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

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

3. Date of Earliest Transaction (Month/Day/Year)
11/25/2025

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
Voting Common Stock	11/25/2025		P		25,000(1)	A	$2	51,807(2)	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. Represents shares of voting common stock purchased in the Issuer private offering.

2. Includes 4,149 shares of voting common stock underlying restricted stock units that fully vest one year from the date of grant, subject to continued service with the Issuer and 12,658 shares of voting common stock underlying restricted stock units that fully vest on February 12, 2026.

	John P. Miller, Reporting Person	11/25/2025
	** 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 Capstone Green Energy (CGEH) report on this Form 4?

The Form 4 reports that John P. Miller, a Director and Interim CFO of Capstone Green Energy Holdings, Inc. (CGEH), purchased 25,000 shares of voting common stock on 11/25/2025 in a private offering at $2 per share.

How many CGEH shares does John P. Miller own after the reported transaction?

Following the transaction, John P. Miller beneficially owns 51,807 shares of Capstone Green Energy voting common stock.

What is John P. Miller’s role at Capstone Green Energy (CGEH)?

According to the filing, John P. Miller is both a Director and an Officer, serving as Interim CFO of Capstone Green Energy Holdings, Inc.

When did the CGEH insider purchase take place?

The insider purchase occurred on November 25, 2025, as shown in Table I of the Form 4.

What restricted stock units (RSUs) are included in John P. Miller’s CGEH holdings?

His beneficial ownership includes 4,149 shares of voting common stock underlying RSUs that fully vest one year from the grant date, subject to continued service, and 12,658 shares underlying RSUs that fully vest on February 12, 2026.

Was the CGEH insider transaction a purchase or a sale of shares?

The transaction was a purchase, coded as P in the Form 4, for 25,000 shares of voting common stock at $2 per share.