Energy Vault (NYSE: NRGV) CEO Piconi has 91,374 shares withheld for taxes

Rhea-AI Filing Summary

Energy Vault Holdings (NRGV) reported an insider tax-related share withholding. Chief Executive Officer, director, and 10% owner Robert Piconi had 91,374 shares of common stock withheld on January 22, 2026 at $4.61 per share to cover taxes due on the vesting of restricted stock units. After this transaction, he directly beneficially owned 20,083,137 shares of common stock. He also had indirect beneficial ownership of 4,307,946 shares held by the Piconi 2021 Delaware Trust and 4,307,946 shares held by the Piconi Family 2021 Delaware Trust, for which he serves as investment advisor.

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^*

Piconi Robert

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

3. Date of Earliest Transaction (Month/Day/Year)
01/22/2026

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	01/22/2026		F		91,374(1)	D	$4.61	20,083,137	D
Common Stock								4,307,946	I	See Footnote(2)
Common Stock								4,307,946	I	See Footnote(3)

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.

2. Held by Piconi 2021 Delaware Trust for which the Reporting Person serves as investment advisor.

3. Held by Piconi Family 2021 Delaware Trust for which the Reporting Person serves as investment advisor.

Remarks:

	/s/ Brad Eastman, Chief Legal Officer	01/23/2026
	** 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.

FAQ

What insider transaction did NRGV disclose for Robert Piconi?

Energy Vault Holdings (NRGV) disclosed that Chief Executive Officer and director Robert Piconi had 91,374 shares of common stock withheld on January 22, 2026 to satisfy tax liabilities from the vesting of restricted stock units.

What was the price per share for the NRGV shares withheld for taxes?

The shares of Energy Vault Holdings (NRGV) common stock withheld to cover taxes were valued at $4.61 per share.

How many NRGV shares does Robert Piconi own directly after this transaction?

Following the tax withholding transaction, Robert Piconi directly beneficially owned 20,083,137 shares of Energy Vault Holdings common stock.

What indirect holdings in NRGV does Robert Piconi report?

Robert Piconi reports indirect beneficial ownership of 4,307,946 NRGV shares held by the Piconi 2021 Delaware Trust and 4,307,946 shares held by the Piconi Family 2021 Delaware Trust, where he serves as investment advisor.

Was the NRGV insider transaction an open-market sale by Robert Piconi?

No. The filing states that the 91,374 shares were withheld by the issuer to satisfy Robert Piconi's tax liability upon the vesting of restricted stock units, rather than an open-market sale.

What role does Robert Piconi hold at Energy Vault Holdings (NRGV)?

Robert Piconi is identified as a Director, Chief Executive Officer, and a 10% owner of Energy Vault Holdings, Inc.