STOCK TITAN

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

Filing Impact
(Low)
Filing Sentiment
(Negative)
Form Type
4

Energy Vault Holdings insider Robert Piconi reported a small disposition of common stock tied to RSU tax withholding and retains substantial ownership. The filing shows a Code F disposition of 10,400 shares on 09/22/2025 at a price of $2.02 per share representing shares withheld to satisfy tax liabilities on vested restricted stock units. After the withholding, the reporting person beneficially owns 20,199,884 shares directly and is advisor to two trusts that each hold 4,307,946 shares, reported as indirect holdings. The Form 4 was signed by the issuer's Chief Legal Officer on 09/24/2025.

Un dirigente di Energy Vault Holdings, Robert Piconi, ha segnalato una piccola disposizione di azioni comuni legata alla ritenuta fiscale sulle RSU e mantiene una partecipazione sostanziale. La pratica mostra una disposizione di Codice F di 10.400 azioni il 22/09/2025 al prezzo di 2,02 dollari per azione, rappresentando azioni trattenute per soddisfare gli obblighi fiscali sulle unità azione vincolate maturate. Dopo la trattenuta, il soggetto riportante detiene direttamente 20.199.884 azioni e ha il ruolo di consulente di due trust che detengono ciascuno 4.307.946 azioni, riportate come partecipazioni indirette. Il Modulo 4 è stato firmato dall'Ufficiale Legale Capo dell'emittente il 24/09/2025.

Un directivo de Energy Vault Holdings, Robert Piconi, informó de una pequeña disposición de acciones comunes vinculada con la retención de impuestos de RSU y mantiene una participación sustancial. La presentación muestra una disposición de código F de 10.400 acciones el 22/09/2025 a un precio de 2,02 USD por acción, que representa las acciones retenidas para satisfacer las obligaciones fiscales sobre las unidades de acciones restringidas vestidas. Después de la retención, la persona reportante posee directamente 20.199.884 acciones y es asesor de dos fideicomisos que cada uno posee 4.307.946 acciones, reportadas como participaciones indirectas. El Formulario 4 fue firmado por el Director Jurídico en Jefe de la emisora el 24/09/2025.

Energy Vault Holdings의 내부자 로버트 피코니가 RSU 과세 보류와 관련된 일반 주식의 소액 매각을 보고했으며 상당한 보유를 유지하고 있다. 제출서는 2025년 9월 22일 주당 2.02달러의 가격으로 10,400주를 Code F에 따른 매각으로 표시하며, 이는 부여된 제한 주식단위의 과세 의무를 충당하기 위해 보유된 주식을 나타낸다. 보류 후 보고자는 직접 20,199,884주를 보유하고 있으며 각 4,307,946주를 보유한 두 신탁의 조언자로서 간접 보유로 보고된다. 양식 4는 발행인의 최고 법무 책임자가 2025년 9월 24일에 서명했다.

Un initié de Energy Vault Holdings, Robert Piconi, a signalé une petite cession d'actions ordinaires liée à la retenue d'impôt sur les RSU et conserve une participation importante. Le dossier montre une cession selon le code F de 10 400 actions le 22/09/2025 à un prix de 2,02 $ par action, représentant des actions retenues pour satisfaire les obligations fiscales sur les unités d'actions restreintes acquises. Après la retenue, la personne déclarée détient directement 20 199 884 actions et est conseiller de deux trusts qui détiennent chacun 4 307 946 actions, rapportées comme avoirs indirects. Le Formulaire 4 a été signé par le Directeur Juridique en Chef de l'émetteur le 24/09/2025.

Ein Insider von Energy Vault Holdings, Robert Piconi, meldete eine geringe Veräußerung von Stammaktien im Zusammenhang mit der Steuerretention von RSUs und behält erhebliches Eigentum. Die Einreichung zeigt eine Disposal nach Code F über 10.400 Aktien am 22.09.2025 zu einem Preis von 2,02 USD pro Aktie, was Aktien repräsentiert, die zur Begleichung von Steuerverbindlichkeiten für vestete RSUs einbehalten wurden. Nach der Einbehaltung hält die meldende Person direkt 20.199.884 Aktien und ist Berater für zwei Trusts, die jeweils 4.307.946 Aktien halten, ausgewiesen als indirektes Eigentum. Das Form 4 wurde von dem Chief Legal Officer des Emittenten am 24.09.2025 unterzeichnet.

أبلغ رئيس داخل Energy Vault Holdings روبرت بيكوني عن تصرّف بسيط في الأسهم العادية مربوط باحتجاز ضريبي متعلق بـ RSU ويحافظ على ملكية كبيرة. تُظهر العريضة تصرّفاً من النوع Code F بمقدار 10,400 سهماً في 22/09/2025 بسعر 2.02 دولار للسهم الواحد، ويمثل الأسهم المحجوزة لتلبية الالتزامات الضريبية على وحدات الأسهم المقيدة المنفذة. بعد الحجز، يملك المبلغ المبلغ مباشرة 20,199,884 سهماً وهو مستشار لاثنين من الثقة التي تحمل كل واحد منها 4,307,946 سهماً، مُسجلة كملكية غير مباشرة. تم توقيع النموذج 4 من قبل رئيس الشؤون القانونية للمصدر في 24/09/2025.

Energy Vault Holdings 的内部人士 Robert Piconi 报告了一笔与 RSU 扣税相关的小额普通股处置,并保留着大量股权。 该备案显示在 2025-09-22 的 Code F 处置 10,400 股,股价为每股 2.02 美元,代表为满足已归属的受限股票单位的税款而扣留的股票。扣税后,申报人直接拥有 20,199,884 股,并担任两个信托的顾问,每个信托各持有 4,307,946 股,作为间接持有披露。表格 4 由发行人的首席法务官在 2025-09-24 签署。

Positive
  • Large retained direct ownership of 20,199,884 shares after the transaction
  • Additional indirect holdings of 4,307,946 shares held in each of two trusts advised by the reporting person, indicating substantial overall economic interest
  • Transaction was a tax-withholding on vested RSUs (Code F), which is administrative rather than a discretionary sale
Negative
  • 10,400 shares disposed via withholding on 09/22/2025 at $2.02 per share, reducing the reporting person's direct share count
  • Filing indicates insider is both CEO and a 10% owner, which concentrates control and may raise governance concentration concerns for some investors

Insights

TL;DR: A routine tax-withholding disposition that does not materially change insider stake.

The reported Code F transaction reflects shares withheld to cover tax on vested RSUs rather than an open-market sale, which is typically neutral for market signaling. The withholding of 10,400 shares at $2.02 is immaterial relative to the reporting person's direct holding of 20.2 million shares and the two trusts each holding 4.307.946 shares. From a shareholder dilution and insider-alignment perspective, the insider remains heavily invested, preserving alignment with shareholders.

TL;DR: Disclosure is standard and complete; transaction appears administrative.

The Form 4 discloses relationship statuses (Director, CEO, 10% owner) and clarifies that the disposal relates to tax-withholding on RSU vesting. The filing identifies indirect holdings via two trusts for which the reporting person is investment advisor. Documentation and signature by the Chief Legal Officer indicate procedural compliance. There are no red flags for opportunistic insider selling in this filing.

Un dirigente di Energy Vault Holdings, Robert Piconi, ha segnalato una piccola disposizione di azioni comuni legata alla ritenuta fiscale sulle RSU e mantiene una partecipazione sostanziale. La pratica mostra una disposizione di Codice F di 10.400 azioni il 22/09/2025 al prezzo di 2,02 dollari per azione, rappresentando azioni trattenute per soddisfare gli obblighi fiscali sulle unità azione vincolate maturate. Dopo la trattenuta, il soggetto riportante detiene direttamente 20.199.884 azioni e ha il ruolo di consulente di due trust che detengono ciascuno 4.307.946 azioni, riportate come partecipazioni indirette. Il Modulo 4 è stato firmato dall'Ufficiale Legale Capo dell'emittente il 24/09/2025.

Un directivo de Energy Vault Holdings, Robert Piconi, informó de una pequeña disposición de acciones comunes vinculada con la retención de impuestos de RSU y mantiene una participación sustancial. La presentación muestra una disposición de código F de 10.400 acciones el 22/09/2025 a un precio de 2,02 USD por acción, que representa las acciones retenidas para satisfacer las obligaciones fiscales sobre las unidades de acciones restringidas vestidas. Después de la retención, la persona reportante posee directamente 20.199.884 acciones y es asesor de dos fideicomisos que cada uno posee 4.307.946 acciones, reportadas como participaciones indirectas. El Formulario 4 fue firmado por el Director Jurídico en Jefe de la emisora el 24/09/2025.

Energy Vault Holdings의 내부자 로버트 피코니가 RSU 과세 보류와 관련된 일반 주식의 소액 매각을 보고했으며 상당한 보유를 유지하고 있다. 제출서는 2025년 9월 22일 주당 2.02달러의 가격으로 10,400주를 Code F에 따른 매각으로 표시하며, 이는 부여된 제한 주식단위의 과세 의무를 충당하기 위해 보유된 주식을 나타낸다. 보류 후 보고자는 직접 20,199,884주를 보유하고 있으며 각 4,307,946주를 보유한 두 신탁의 조언자로서 간접 보유로 보고된다. 양식 4는 발행인의 최고 법무 책임자가 2025년 9월 24일에 서명했다.

Un initié de Energy Vault Holdings, Robert Piconi, a signalé une petite cession d'actions ordinaires liée à la retenue d'impôt sur les RSU et conserve une participation importante. Le dossier montre une cession selon le code F de 10 400 actions le 22/09/2025 à un prix de 2,02 $ par action, représentant des actions retenues pour satisfaire les obligations fiscales sur les unités d'actions restreintes acquises. Après la retenue, la personne déclarée détient directement 20 199 884 actions et est conseiller de deux trusts qui détiennent chacun 4 307 946 actions, rapportées comme avoirs indirects. Le Formulaire 4 a été signé par le Directeur Juridique en Chef de l'émetteur le 24/09/2025.

Ein Insider von Energy Vault Holdings, Robert Piconi, meldete eine geringe Veräußerung von Stammaktien im Zusammenhang mit der Steuerretention von RSUs und behält erhebliches Eigentum. Die Einreichung zeigt eine Disposal nach Code F über 10.400 Aktien am 22.09.2025 zu einem Preis von 2,02 USD pro Aktie, was Aktien repräsentiert, die zur Begleichung von Steuerverbindlichkeiten für vestete RSUs einbehalten wurden. Nach der Einbehaltung hält die meldende Person direkt 20.199.884 Aktien und ist Berater für zwei Trusts, die jeweils 4.307.946 Aktien halten, ausgewiesen als indirektes Eigentum. Das Form 4 wurde von dem Chief Legal Officer des Emittenten am 24.09.2025 unterzeichnet.

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).
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)
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 10,400(1) D $2.02 20,199,884 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 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 Robert Piconi report on Form 4 for NRGV?

The Form 4 reports a Code F disposition of 10,400 common shares on 09/22/2025 at $2.02 per share, representing shares withheld to satisfy tax liability on vested RSUs.

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

After the reported withholding, the reporting person directly beneficially owns 20,199,884 shares.

Are there any indirect holdings disclosed for the reporting person?

Yes. The filing discloses two indirect holdings of 4,307,946 shares each held by two Delaware trusts for which the reporting person serves as investment advisor.

Was this an open-market sale or another type of disposition?

This was not an open-market sale; it was a tax-withholding disposition tied to RSU vesting, reported under Code F.

Who signed the Form 4 filing and when?

The Form 4 includes a signature block signed by Brad Eastman, Chief Legal Officer dated 09/24/2025.
ENERGY VAULT HOLDINGS INC

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WESTLAKE VILLIAGE