Energy Vault (NRGV) COO settles RSU taxes with 147,984 withheld shares

Rhea-AI Filing Summary

Energy Vault Holdings, Inc. Chief Operations Officer Akshay Ladwa reported a routine tax-withholding transaction related to equity compensation. On March 31, 2026, 147,984 shares of common stock were withheld at $3.30 per share to satisfy tax obligations on vesting restricted stock units, which the footnote states was not a market sale. After this withholding, Ladwa directly held 2,141,336 shares of common stock.

Insider Trade Summary

1 transaction reported

Mixed 1 txn

Insider Ladwa Akshay

Role Chief Operations Officer

Type	Security	Shares	Price	Value
Tax Withholding	Common Stock	147,984	$3.30	$488K

Holdings After Transaction: Common Stock — 2,141,336 shares (Direct)

Footnotes (1)

1. [object Object]

Key Figures

Tax-withheld shares: 147,984 shares Per-share value for withholding: $3.30 per share Shares held after transaction: 2,141,336 shares

3 metrics

Tax-withheld shares 147,984 shares Common stock withheld to satisfy RSU tax liability on March 31, 2026

Per-share value for withholding $3.30 per share Value applied to withheld common stock for tax purposes

Shares held after transaction 2,141,336 shares Direct common stock holdings of Akshay Ladwa following withholding

Key Terms

restricted stock units, Form 4, tax-withholding disposition, Chief Operations Officer

4 terms

restricted stock units financial

"tax liability on vesting of restricted stock units. Not a market sale"

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.

Form 4 regulatory

"INSIDER FILING DATA (Form 4)"

Form 4 is a official document that company insiders, such as executives or major shareholders, file with regulators whenever they buy or sell company shares. It provides transparency about how those with inside knowledge are trading, helping investors see if insiders are confident in the company's prospects or may be selling for personal reasons. This information can influence investor decisions by revealing insiders' perspectives on the company's value.

tax-withholding disposition financial

"transaction_action": "tax-withholding disposition""

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.

Chief Operations Officer financial

"officer_title": "Chief Operations Officer""

Form 4 Insider Transactions: What Each Field Means →

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^*

Ladwa Akshay

(Last) (First) (Middle)

4165 EAST THOUSAND OAKS BLVD, SUITE 100

(Street)

WESTLAKE VILLAGE CALIFORNIA 91362

(City) (State) (Zip)

UNITED STATES

(Country)

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)
	Chief Operations 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		F		147,984(1)	D	$3.3	2,141,336	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. Not a market sale.

Remarks:

	/s/ Amy Blakeway, Chief Legal Officer	04/02/2026
	** 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)

FAQ

What insider transaction did NRGV executive Akshay Ladwa report on this Form 4?

Akshay Ladwa reported a tax-related share disposition, not an open-market trade. 147,984 shares of Energy Vault common stock were withheld by the company at $3.30 per share to cover his tax liability on vesting restricted stock units.

Was the NRGV Form 4 transaction by Akshay Ladwa a market sale of shares?

No, the transaction was not a market sale. The footnote explains the 147,984 shares were withheld by Energy Vault to satisfy Ladwa’s tax liability upon RSU vesting, a standard compensation-related event rather than an open-market sell order.

How many NRGV shares does Akshay Ladwa hold after the reported Form 4 transaction?

Following the tax-withholding transaction, Akshay Ladwa directly holds 2,141,336 shares of Energy Vault common stock. This figure reflects his position after the company withheld 147,984 shares to cover taxes tied to vesting restricted stock units.

What price per share was used for the NRGV tax-withholding transaction reported by Akshay Ladwa?

The tax-withholding disposition used a value of $3.30 per share for the 147,984 shares withheld. This per-share figure is reported in the Form 4 as the price applied when Energy Vault retained shares to satisfy Ladwa’s tax obligations.

What does the Form 4 footnote say about Akshay Ladwa’s NRGV share disposition?

The footnote states the transaction represents shares withheld by Energy Vault to satisfy Ladwa’s tax liability on vesting restricted stock units and is not a market sale. This clarifies the event is a compensation-related tax settlement, not discretionary selling.