Every Form 4 that Energy Vault Holdings, Inc. (NRGV) has filed with the SEC in the last 12 months is listed below, newest first, and each one links through to the document itself with the summary and the scores our analysis gives it.
A Form 4 covers the transactions officers, directors and large holders report, so if you follow NRGV and want that one kind of document rather than the whole filing history, this is the page to keep. The company's other filings, of every form, are on the full NRGV filings page.
Energy Vault Holdings, Inc. Chief Executive Officer, director and 10% owner Robert Piconi had 165,062 common shares withheld by the issuer on September 30, 2026, to satisfy his tax liability on vesting of restricted stock units; this was not a market sale. The transaction lists $3.97 per share, and his direct holdings afterward were 16,284,929 shares.
Energy Vault Holdings, Inc. Chief Operations Officer Akshay Ladwa had 52,721 common shares withheld by the issuer on September 30, 2026, to satisfy his tax liability on vesting of restricted stock units. The reported price was $3.97 per share; this was a tax-withholding disposition, not a market sale. He directly held 2,035,894 shares following the transaction.
Energy Vault Holdings, Inc. (NRGV) director Stephanie Unwin reported selling 115,000 shares of common stock on 2026-08-26 in an open-market or private transaction at a weighted average price of $3.7129 per share. The filing states the shares were sold to satisfy her Australian tax liability arising from the vesting of restricted stock units. Following this sale, she directly holds 182,245 shares of NRGV common stock.
Energy Vault Holdings, Inc. director Dylan Hixon reported an indirect open-market purchase of 27,472 shares of common stock of NRGV on 2026-08-17 at $3.878 per share. The purchased shares are held by the Dylan Hixon Childrens Trust FBO Casimir R. Hixon, for which Mr. Hixon is sole trustee and may be deemed to have beneficial ownership, while disclaiming beneficial ownership except to the extent of his pecuniary interest. The filing also reports indirect holdings through additional family trusts, his son, and Arden Road Investments LLC, and direct ownership of 117,602 shares of common stock as of that date.
Energy Vault Holdings, Inc. director Dylan Hixon reported indirect open‑market purchases of a total of 85,518 shares of common stock on August 14, 2026 at prices around $3.73–$3.75 per share. The transactions were made by two DHH Hixon Family Great Grandchildrens Trusts for Casimir and Soren Hixon and by his son, with Hixon reporting as trustee or related person and disclaiming beneficial ownership except for any pecuniary interest. After these trades, he reports 117,602 shares held directly and 900,065 shares held indirectly through Arden Road Investments LLC. The filing indicates the trades were not made under a Rule 10b5‑1 trading plan.
Dahiya Nitin reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings, Inc. granted Chief Financial Officer Nitin Dahiya 400,000 restricted stock units (RSUs) and 400,000 performance restricted stock units (PRSUs) on August 4, 2026. The RSUs are scheduled to vest as to 25% of the underlying shares on September 30, 2027, with the remaining shares vesting in 12 substantially equal quarterly installments thereafter. The PRSUs are eligible to vest in three tranches of 50,000, 150,000 and 200,000 units upon achieving share price targets of $8.00, $10.00 and $12.00, respectively, subject to specified continuous employment periods.
Energy Vault Holdings, Inc. Chief Financial Officer Michael Thomas Beer reported an open-market sale of 65,000 shares of common stock at an average price of $4.08 per share. On the same day, he exercised stock options to acquire 50,000 shares of common stock at an exercise price of $1.17 per share. The sale was effected under a pre-arranged Rule 10b5-1 trading plan, and the exercised options relate to an award that vests over time through quarterly installments.
Energy Vault Holdings, Inc. director and Chief Executive Officer Robert Piconi reported a routine tax-related share withholding. The company withheld 141,682 shares of common stock at $4.71 per share to cover his tax liability upon vesting of restricted stock units, which is explicitly described as not a market sale. After this tax-withholding disposition, Piconi directly holds 16,449,991 common shares.
Energy Vault Holdings, Inc. reported that Chief Operations Officer Akshay Ladwa had 52,721 shares of common stock withheld by the company to cover tax obligations on the vesting of restricted stock units. This was a tax-related share withholding, not an open-market sale. After this transaction, Ladwa directly holds 2,088,615 shares of common stock.
Energy Vault Holdings, Inc. Chief Financial Officer Michael Thomas Beer reported a routine tax-related share disposition. On the vesting of restricted stock units, the issuer withheld 24,139 shares of common stock at $4.71 per share to cover his tax liability. A footnote clarifies this was not a market sale. Following the withholding, Beer directly holds 1,036,806 shares of common stock.
Energy Vault Holdings, Inc. reported that Chief Executive Officer Robert Piconi received a grant of stock options covering 3,886,000 shares of common stock. The options have an exercise price of 4.26 per share and expire on June 25, 2033. According to the filing, these options vest in three substantially equal annual installments beginning on March 31, 2027, meaning the award functions as long-term, performance-tied compensation rather than an immediate market purchase. After this grant, Piconi holds 3,886,000 stock options directly.
Unwin Stephanie reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings director Stephanie Unwin received a grant of 19,153 restricted stock units (RSUs) of Common Stock. The award was made at no cash cost to her and increases her direct holdings to 297,245 shares. The RSUs will vest on June 1, 2027, provided she continues serving on the Board.
Mandanas Mary Beth reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings, Inc. director Mary Beth Mandanas received an equity grant in the form of restricted stock units. She was awarded 22,026 RSUs of Common Stock at no cash cost, increasing her direct holdings to 372,864 shares after the grant.
Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest on June 1, 2027, subject to her continued service on the Board, aligning part of her compensation with the company’s long-term performance.
Energy Vault Holdings, Inc. director Theresa M. Fariello received a grant of 19,153 shares of Common Stock in the form of restricted stock units. The award has no cash exercise price and is part of her equity compensation. Following this grant, she directly holds 318,217 shares. The RSUs vest on June 1, 2027, subject to her continued service on the board.
Hixon Dylan reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings director Dylan Hixon reported an equity award and updated share holdings. He received 19,153 restricted stock units, each representing a contingent right to one share of Common Stock, vesting on June 1, 2027 subject to his continued service on the Board.
After this award, Hixon holds 117,602 shares of Common Stock directly. A further 900,065 shares are held indirectly through Arden Road Investments LLC via a trust where he serves as sole trustee; he may be deemed to have beneficial ownership only to the extent of his pecuniary interest.
Paulson Larry reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings director Larry Paulson reported a new equity award. He received 22,026 restricted stock units (RSUs), each representing a contingent right to one share of common stock at no cash cost, as the grant is compensation rather than a market purchase.
The RSUs vest on June 1, 2027, subject to his continued service on the board. Following this grant, Paulson holds 523,794 shares of common stock directly. Separately, a family trust associated with him holds 609,256 shares; he is a trustee and disclaims beneficial ownership except for his pecuniary interest.
Ertel Thomas R reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings, Inc. director Thomas R. Ertel received an award of 22,026 shares of Common Stock in the form of restricted stock units. The award was granted at no cash cost to him and increases his direct holdings to 387,814 shares.
Each RSU represents a right to receive one share of Common Stock, vesting on June 1, 2027, subject to his continued service on the Board. This filing reflects a compensation-related equity grant rather than an open-market purchase or sale.
Energy Vault Holdings, Inc. Chief Financial Officer Michael Thomas Beer reported an option exercise and related share sale. On April 6, 2026, he exercised stock options for 50,000 shares of common stock at $1.17 per share and acquired those shares.
That same day, he sold 65,000 shares of common stock at $3.18 per share in open-market transactions. After these trades, he directly owned 1,060,945 common shares. The sales were made under a pre-arranged Rule 10b5-1 trading plan adopted on December 19, 2025.
Energy Vault Holdings, Inc. Chief Executive Officer Robert Piconi reported a tax-related share disposition tied to equity compensation. On the vesting of restricted stock units, 329,921 shares of common stock were withheld by the company at $3.30 per share to cover his tax liability. This was described as a tax-withholding mechanism and not a market sale, meaning the shares were not sold on an exchange. After this withholding, Piconi directly holds 16,591,673 shares of common stock, indicating he retains a large equity position in the company.
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.
Energy Vault Holdings, Inc. Chief Financial Officer Michael Thomas Beer had 28,738 shares of Common Stock withheld by the company at $3.30 per share to cover tax obligations on the vesting of restricted stock units. This was a tax-withholding disposition, not an open-market sale. After this transaction, he directly holds 1,075,945 shares of the company’s common stock.
Energy Vault Holdings, Inc. Chief Executive Officer Robert Piconi completed an open-market purchase of 12,500 shares of Common Stock at a price of $3.2096 per share. Following this transaction, he directly holds 16,921,594 shares of the company’s common stock.
Energy Vault Holdings director Mary Beth Mandanas bought 5,000 shares of common stock in an open-market transaction at $3.65 per share. After this purchase, she directly holds 350,838 shares. The trade modestly increases her stake and reflects a small, routine insider buying activity.
Ladwa Akshay reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings, Inc. reported that Chief Operations Officer Akshay Ladwa received a grant of 475,000 shares of Common Stock in the form of restricted stock units (RSUs) at no cash cost per share. Following this equity award, his direct holdings increased to 2,289,320 shares.
The RSUs have a 3-year vesting period, with 33.2% vesting after 12 months and the remaining units vesting in 8.35% installments each quarter thereafter, subject to his continued service. The vesting commencement date for this award is March 31, 2026, so the economic benefit will be realized over time rather than immediately.
Beer Michael Thomas reported acquisition or exercise transactions in this Form 4 filing.
Energy Vault Holdings, Inc. reported that its Chief Financial Officer, Michael Thomas Beer, received an equity compensation grant of 150,000 shares of Common Stock in the form of restricted stock units (RSUs) at no cash cost per share.
Each RSU represents one share of Common Stock and will vest over a 3-year period, with 33.2% vesting after 12 months from the vesting commencement date of March 31, 2026, followed by quarterly vesting of 8.35%. After this award, Beer holds a total of 1,104,683 shares of Common Stock directly.
Energy Vault Holdings, Inc. Chief Executive Officer Robert Piconi reported a tax-related share withholding tied to restricted stock units. On March 5, 2026, the company withheld 68,737 shares of common stock at $3.00 per share to cover his tax liability upon RSU vesting, a non‑market disposition coded as tax-withholding.
After this transaction, Piconi directly owned 20,021,900 common shares. He also had indirect ownership of 4,307,946 common shares held by the Piconi 2021 Delaware Trust and the Piconi Family 2021 Delaware Trust, for which he serves as investment advisor.
Energy Vault Holdings, Inc. Chief Operations Officer Akshay Ladwa reported a tax-related share disposition. On the vesting of restricted stock units, the issuer withheld 10,064 shares of common stock to satisfy his tax liability, at a value of $3.00 per share.
Following this tax-withholding disposition, Ladwa directly owns 1,814,320 shares of common stock. This transaction reflects shares withheld by the company for taxes rather than an open-market sale.
Energy Vault Holdings director buys shares on the open market. Director Ertel Thomas R purchased 5,450 shares of Energy Vault Holdings, Inc. common stock in an open-market transaction at a price of $3.3699 per share, bringing his directly held stake to 365,788 shares.
Energy Vault Holdings, Inc. Chief Operations Officer Akshay Ladwa bought 4,000 shares of common stock in an open-market purchase at $3.085 per share on March 2, 2026. After this transaction, his directly held stake increased to 1,824,384 common shares.
Energy Vault Holdings, Inc. director Larry Paulson reported an open-market purchase of 5,000 shares of common stock on February 27, 2026 at an average price of $3.1452 per share. Following this trade, he directly owned 501,768 common shares, and an additional 609,256 shares were held indirectly through a family trust.
Energy Vault Holdings, Inc. Chief Executive Officer Robert Piconi reported an open-market purchase of 7,500 shares of common stock on February 26, 2026 at a price of $3.255 per share. This filing reflects a net increase in his directly held stake.
After the transaction, Piconi directly owns 20,090,637 common shares. He is also investment advisor to 2021 Delaware trusts that hold an additional 4,307,946 shares indirectly, as disclosed in the footnotes.
Energy Vault Holdings Chief Financial Officer Michael Thomas Beer reported stock-based compensation activity tied to performance stock units. On January 30, 2026, he acquired 200,000 shares of common stock at $0 per share in connection with vesting of performance-based restricted stock units, and a separate 200,000-share tranche also vested the same day.
The vested shares relate to a 600,000-share performance RSU award granted on April 15, 2024, which vests in three 200,000-share tranches when stock price hurdles of $3.50, $4.50, and $5.50 are met. The company reached the $3.50 level on December 31, 2025 and $4.50 on January 7, 2026. To cover tax obligations from the January 30, 2026 vesting, 77,046 shares were withheld at $4.61 per share and 103,100 shares were withheld at $5.43 per share, leaving Beer with 1,354,683 shares of common stock beneficially owned directly.
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.
Energy Vault Holdings, Inc. Chief Financial Officer Michael Thomas Beer reported an automatic share withholding related to equity compensation. On January 22, 2026, the company withheld 15,693 shares of common stock at $4.61 per share to cover his tax liability arising from the vesting of restricted stock units, rather than a discretionary open‑market sale. After this withholding, he directly owns 1,134,829 shares of Energy Vault common stock.
Energy Vault Holdings, Inc. reported that Chief Operations Officer Akshay Ladwa had 15,711 shares of common stock withheld on January 22, 2026 to cover tax obligations triggered by the vesting of restricted stock units. The shares were withheld by the company at a price of $4.61 per share, using transaction code “F,” which indicates tax withholding rather than an open-market trade. After this transaction, Ladwa beneficially owns 1,820,384 shares of Energy Vault common stock in direct ownership.
Energy Vault Holdings, Inc. officer Christopher Wiese, President of Energy Vault Labs, reported a routine share withholding related to equity compensation. On January 22, 2026, 6,808 shares of common stock were withheld at $4.61 per share to cover his tax liability upon the vesting of restricted stock units. After this transaction, he directly beneficially owned 1,128,960 shares of Energy Vault common stock.
Energy Vault Holdings, Inc. (NRGV) reported an insider transaction involving a major shareholder. SoftBank Vision Fund (AIV M2) L.P., acting as a 10% owner, indirectly sold 3,000,000 shares of common stock of Energy Vault on January 15, 2026 at a price of $5.65 per share, according to a Form 4 filing.
After this sale, AIV M2 continued to beneficially own 15,535,631 shares of Energy Vault common stock indirectly. SB Investment Advisers (UK) Limited, which is authorized and regulated by the UK Financial Conduct Authority, serves as the alternative investment fund manager for AIV M2 and is exclusively responsible for decisions regarding AIV M2’s investments, including acquisition, financing, voting, and disposal.
Energy Vault Holdings, Inc. Chief Financial Officer trades company stock. On 12/23/2025, the CFO reported selling 50,000 shares of Energy Vault Holdings, Inc. common stock at a weighted average price of $4.9108 per share, with actual sale prices ranging from $4.660 to $5.110. After this sale, the officer reported beneficial ownership of 1,150,522 shares, held directly.
Energy Vault Holdings, Inc. insider activity centers on tax withholding. On 12/11/2025, a reporting person who is a director, Chief Executive Officer and 10% owner had 8,612 shares of common stock withheld by the company to cover tax obligations upon vesting of restricted stock units, at a reported price of $3.44 per share (transaction code F).
After this transaction, the reporting person beneficially owned 20,188,630 shares of common stock directly. In addition, 4,307,946 shares are held by the Piconi 2021 Delaware Trust and 4,307,946 shares are held by the Piconi Family 2021 Delaware Trust, in each case with the reporting person serving as investment advisor, which are reported as indirect beneficial ownership.
Energy Vault Holdings, Inc. reported an insider transaction by the President of Energy Vault Labs on a Form 4. On 12/12/2025, the officer had 8,751 shares of common stock withheld by the company at a price of $3.44 per share to cover taxes due upon the vesting of restricted stock units. After this tax withholding, the reporting person directly owns 1,135,768 shares of Energy Vault common stock. This filing reflects a routine equity compensation and tax-settlement event rather than an open-market sale.
Energy Vault Holdings, Inc. reported an insider equity transaction by its Chief Operations Officer. On 12/11/2025, the officer had 21,594 shares of common stock disposed of at $3.44 per share under transaction code F, which indicates shares were withheld to pay taxes on vesting restricted stock units. After this tax-related withholding, the officer directly beneficially owned 1,836,095 shares of Energy Vault common stock. This event reflects routine equity compensation and related tax settlement rather than an open-market trade.
Energy Vault Holdings (NRGV) reported a Form 4 for its Chief Operations Officer. On 11/13/2025, 9,886 shares of common stock were withheld at $3.54 per share to satisfy taxes due upon vesting of restricted stock units. This is coded as Transaction Code F, which indicates share withholding for tax obligations rather than an open-market sale.
Following the transaction, the officer beneficially owns 1,857,689 shares directly.
Energy Vault Holdings (NRGV) reported an insider Form 4 for its officer, the President of Energy Vault Labs. On 11/13/2025, 2,639 shares of common stock were withheld by the company at $3.54 per share to cover taxes upon the vesting of restricted stock units (transaction code F).
Following this administrative withholding, the reporting person beneficially owns 1,144,519 shares directly.
Energy Vault Holdings (NRGV) CEO and director reported insider transactions on Form 4. On 11/13/2025, 2,642 shares of common stock were withheld at $3.54 to cover taxes upon RSU vesting (Code F). On 11/14/2025, the reporting person purchased 10,000 shares at a weighted average price of $2.9958 (Code P).
Following these transactions, directly held shares were 20,207,242. Additional indirect holdings include 4,307,946 shares held by the Piconi 2021 Delaware Trust and 4,307,946 shares held by the Piconi Family 2021 Delaware Trust, where the reporting person serves as investment advisor.
Energy Vault Holdings (NRGV) reported an insider transaction by its Chief Operations Officer. On 10/15/2025, the officer made a bona fide gift of 50,000 shares of common stock at a stated price of $0, coded “G” for gift.
Following the transfer, the officer reported 1,867,575 shares beneficially owned, held directly. The filing notes the recipient was his sister, Megha Rangarej.
Energy Vault Holdings (NRGV) disclosed a routine insider transaction on Form 4. On 10/10/2025, the reporting person had 13,719 common shares withheld under code F at $2.97 per share to cover taxes from restricted stock unit vesting.
After this transaction, the filing lists 20,199,884 shares beneficially owned directly. It also reports indirect holdings through two Delaware trusts for which the reporting person serves as investment advisor: the Piconi 2021 Delaware Trust and the Piconi Family 2021 Delaware Trust.
The reporting person is identified as a Director, 10% Owner, and Officer (Chief Executive Officer). This filing reflects tax‑related share withholding rather than an open‑market purchase or sale.
Energy Vault Holdings, Inc. (NRGV) reported an insider transaction by its Chief Financial Officer. On 10/10/2025, the CFO had 15,581 shares of common stock withheld under code F to satisfy tax obligations arising from the vesting of restricted stock units, at a price of $2.97 per share. Following this administrative withholding, the officer’s beneficial ownership stands at 1,200,522 shares, held directly.
Energy Vault Holdings (NRGV) COO reported a routine insider transaction. On 10/10/2025, 17,007 common shares were withheld at $2.97 to satisfy taxes upon the vesting of restricted stock units, coded F (tax withholding) on Form 4.
Following this administrative withholding, the officer beneficially owns 1,917,575 shares, held directly. This reflects share settlement for taxes rather than an open‑market sale.
Energy Vault Holdings (NRGV) disclosed an insider transaction on a Form 4. On 10/10/2025, an officer (President, Energy Vault Labs) had 5,591 shares of common stock withheld under transaction code F, which indicates shares were retained to cover taxes upon the vesting of restricted stock units.
The shares were valued at $2.97 per share for the withholding. After this tax-withholding event, the reporting person beneficially owned 1,147,158 shares, held directly. This filing reflects routine equity compensation mechanics rather than an open-market purchase or sale.