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

Rhea-AI Filing Summary

Energy Vault Holdings, Inc. (NRGV) reporting person Christopher Wiese, identified as an officer (President, Energy Vault Labs), recorded a disposition of 8,750 shares of common stock on 09/22/2025 under transaction code F. The shares were disposed at a price of $2.02 and, per the filing, represent shares withheld by the issuer to satisfy the reporting person’s tax liability on vesting of restricted stock units. After the withholding, the reporting person beneficially owned 1,152,749 shares, held directly. The Form 4 was signed by the company’s Chief Legal Officer on 09/24/2025.

Positive

• Reporting person retains direct beneficial ownership of 1,152,749 shares, showing continued stake in the company

Negative

• None.

Insights

Securities Analyst

TL;DR Officer withheld 8,750 shares to cover RSU taxes; retains a sizeable direct stake of 1,152,749 shares.

The transaction is reported as Code F, which the filing explains as shares withheld to satisfy tax withholding on vested restricted stock units rather than an open-market sale. The price listed is $2.02 per share and the post-transaction direct beneficial ownership is 1,152,749 shares, indicating continued ownership alignment with shareholders. This disclosure is routine and administrative in nature, with no additional derivative or complex instruments reported.

Corporate Governance Expert

TL;DR Routine tax-withholding disposition from RSU vesting; reporting and signature indicate compliance with Section 16 reporting obligations.

The Form 4 shows the reporting person is an officer and the filing was executed by the company’s Chief Legal Officer, consistent with standard internal controls for insider reporting. The explanation explicitly states the shares were withheld to satisfy tax liability, which is a common administrative action following RSU vesting and does not by itself indicate a change in executive intent or control positions.

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).

1. Name and Address of Reporting Person^*

Wiese Christopher

(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)

	Director		10% Owner
X	Officer (give title below)		Other (specify below)
	President, Energy Vault Labs

3. Date of Earliest Transaction (Month/Day/Year)
09/22/2025

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	09/22/2025		F		8,750(1)	D	$2.02	1,152,749	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 withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

Remarks:

	/s/ Brad Eastman, Chief Legal Officer	09/24/2025
	** 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 Form 4 for NRGV report?

The Form 4 reports a disposition of 8,750 shares of common stock on 09/22/2025 under transaction code F.

Why were the 8,750 shares disposed according to the filing?

The filing states the shares were withheld by the issuer to satisfy the reporting person’s tax liability on vesting of restricted stock units.

At what price were the shares disposed and what was the post-transaction ownership?

The shares were disposed at $2.02 per share, leaving the reporting person with 1,152,749 shares beneficially owned directly.

Who is the reporting person and what is their role at Energy Vault?

The reporting person is Christopher Wiese, listed as an officer with the title President, Energy Vault Labs.

When was the Form 4 signed and by whom?

The Form 4 signature is dated 09/24/2025 and bears the signature of Brad Eastman, Chief Legal Officer.