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

Rhea-AI Filing Summary

Energy Vault Holdings (NRGV) Form 4 shows director Ertel Thomas R purchased 11,200 shares of common stock on 08/28/2025 at a price of $1.8062 per share. After the transaction he beneficially owns 199,206 shares. The filing is submitted as an individual report and is signed on the form by Michael Beer, Chief Financial Officer. The Form 4 indicates the purchase was a single transaction executed at the reported per-share price and provides no additional commentary on purpose or funding for the purchase.

Insights

Financial Analyst

TL;DR: A director bought 11,200 shares at $1.8062, modestly increasing insider ownership to 199,206 shares.

The transaction is a straightforward open-market purchase by a company director, recorded on Form 4. The size of 11,200 shares should be evaluated relative to the company's outstanding shares to judge materiality, but the filing itself discloses only the quantity, price, and resulting beneficial ownership. No derivatives, dispositions, or planned trading arrangements are reported.

Corporate Governance Expert

TL;DR: Director-level purchase disclosed; governance transparency met by timely Form 4 filing with signature by CFO.

The Form 4 meets Section 16 reporting requirements by specifying the reporting person, relationship (Director), transaction date, code (P), share amount, price, and post-transaction holdings. The presence of the CFO's signature on the form is administrative and does not add substantive details about intent. No joint filing or 10% ownership flags are present.

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^*

Ertel Thomas R

(Last) (First) (Middle)

4165 EAST THOUSAND OAKS BLVD, SUITE 100

(Street)

WESTLAKE VILLAGE CA 91362

(City) (State) (Zip)

2. Issuer Name and Ticker or Trading Symbol
Energy Vault Holdings, Inc. [ NRGV ]

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)
08/28/2025

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
Common Stock	08/28/2025		P		11,200	A(1)	$1.8062	199,206	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. The shares are purchased in one transaction at a price provided in Column 4.

Remarks:

	/s/ Michael Beer, Chief Financial Officer	08/28/2025
	** 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 transaction did the Energy Vault Holdings (NRGV) Form 4 report?

The Form 4 reports a director, Ertel Thomas R, purchased 11,200 shares of common stock on 08/28/2025 at $1.8062 per share.

How many shares does the reporting person beneficially own after the transaction?

After the reported purchase the filing shows the reporting person beneficially owns 199,206 shares.

Who signed the Form 4 for Energy Vault Holdings?

The form includes a signature block signed by Michael Beer, Chief Financial Officer dated 08/28/2025.

Does the Form 4 indicate this was part of a 10b5-1 plan or amended filing?

No. The filing does not indicate it was made pursuant to a 10b5-1 plan and the amendment date field is not populated.

Was the purchase a single transaction or multiple trades?

The explanatory remark states the shares were purchased in one transaction at the price provided in Column 4.