Sec Form 4 Filing - GROSS WILLIAM @ Energy Vault Holdings, Inc. - 2022-05-12

FORM 4 Check this box if no longer subject to Section 16. Form 4 or Form 5 obligations may continue. See Instruction 1(b).

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, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940

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1. Name and Address of Reporting Person GROSS WILLIAM 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 _____ Officer (give title below) _____ Other (specify below) (Last) (First) (Middle) 4360 PARK TERRACE DRIVE, SUITE 100 3. Date of Earliest Transaction (MM/DD/YY) 05/12/2022 (Street) WESTLAKE VILLAGE, CA91361 4. If Amendment, Date Original Filed (MM/DD/YY) 6. Individual or Joint/Group Filing (Check Applicable Line) __ X __ Form filed by One Reporting Person _____ Form filed by More than One Reporting Person (City) (State) (Zip)

Table I - Non-Derivative Securities Acquired, Disposed of, or Beneficially Owned 1.Title of Security (Instr. 3) 2. Transaction Date (MM/DD/YY) 2A. Deemed Execution Date, if any (MM/DD/YY) 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 05/12/2022 J( 1 ) 5,402,950 A $ 0 5,402,950 I Held by Gross Goodstein Living Trust dated April 18, 2006 Common Stock 05/12/2022 J( 2 ) 13,848,605 D $ 0 1,734,943 I Held by Idealab Studio, LLC Common Stock 05/12/2022 J( 3 ) 1,483,390 A $ 0 1,483,390 I Held by Idealab Holdings, LLC

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 (MM/DD/YY) 3A. Deemed Execution Date, if any (MM/DD/YY) 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 (MM/DD/YY) 7. Title and Amount of Underlying Securities (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 of Derivative Security: 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

Reporting Owners Reporting Owner Name / Address Relationships Director 10% Owner Officer Other GROSS WILLIAM 4360 PARK TERRACE DRIVE, SUITE 100 WESTLAKE VILLAGE, CA91361 X X Signatures /s/ Daniel Gunning, Attorney-in-Fact 05/16/2022 Signature of Reporting Person Date

Explanation of Responses:

( 1 )Represents an acquisition of securities from an in-kind distribution from Idealab Studio, LLC to its members, and not a purchase or sale, without additional consideration paid, and is therefore an exempt, non-matchable acquisition pursuant to Section 16(b). Mr. Gross is co-Trustee together with his wife of the Gross Goodstein Living Trust dated April 18, 2006 (the "Trust") and may be deemed to have beneficial ownership of the securities held the Trust. Mr. Gross disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein. ( 2 )Represents a disposition of securities from an in-kind distribution, and not a purchase or sale, without additional consideration paid. ( 3 )Represents an acquisition of securities from an in-kind distribution from Idealab Studio, LLC to its members, and not a purchase or sale, without additional consideration paid, and is therefore an exempt, non-matchable acquisition pursuant to Section 16(b). Idealab Holdings, LLC ("Holdings") is a wholly-owned subsidiary of Idealab, a California corporation. Idealab is managed by a board of directors consisting of Bill Gross, Marcia Goodstein (Mr. Gross's wife), Renee LaBran and Bob Kavner, and no single person has voting or dispositive authority over the securities reported herein. Mr. Gross may be deemed to share beneficial ownership of the securities held by Holdings. Mr. Gross disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

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).

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