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NYSE · USD

NRGV

Energy Vault Holdings, Inc.

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Tapewire entity
5363
SEC CIK
0001828536
Parsed reports
383

Last 12 months

Inside the activity.

11 purchase rows · 5 sale rows

Disclosed non-derivative P/S rows, by transaction month. Includes amendments and private transactions.
Monthly counts
MonthPurchasesSales
Nov 202510
Dec 202501
Jan 202601
Feb 202620
Mar 202640
Apr 202601
May 202600
Jun 202600
Jul 202601
Aug 202641
Sep 202600
Oct 202600

Latest available

Insider transactions

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Purchases/sales include open-market and private transactions. Plan disclosure applies to the filing; individual rows may differ. “Not disclosed” is not “unplanned.”

The cutoff filters transaction history only. Company summaries and owner relationships show the latest available disclosures. Parser corrections can improve historical records.

Transaction dateOwner / reported roleActivity / securityShares / unitsReported priceReported valueDetails
September 30, 2026 Filed Oct 3, 2026 00:08 UTC
Ladwa AkshayChief Operations Officer
Tax withholdingCommon Stock 52,721 $3.97 $209,302.37
Disclosure

SEC source: 0001977206-26-000011 · wk-form4_1790971732.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,035,894

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
September 30, 2026 Filed Oct 3, 2026 00:09 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
Tax withholdingCommon Stock 165,062 $3.97 $655,296.14
Disclosure

SEC source: 0001898769-26-000009 · wk-form4_1790971775.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,284,929

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
August 26, 2026 Filed Aug 28, 2026 17:08 UTC SaleCommon Stock 115,000 $3.71 $426,983.50
Disclosure

SEC source: 0001828536-26-000108 · wk-form4_1787951297.xml · nonDerivative · entry 1

Unwin Stephanie · CIK 0002014396 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 182,245

F1 · shares: Represents shares sold to satisfy the reporting person's Australian tax liability on vesting of restricted stock units.

F2 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $3.615 to $3.905. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

Read SEC document
August 17, 2026 Filed Aug 18, 2026 13:43 UTC
Hixon DylanDirector
PurchaseCommon Stock 27,472 $3.88 $106,536.42
Disclosure

SEC source: 0002063923-26-000004 · wk-form4_1787060626.xml · nonDerivative · entry 1

Hixon Dylan · CIK 0002063923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by Dylan Hixon Childrens Trust FBO Casimir R. Hixon

Disclosed balance after: 27,472

F1 · ownership.nature: Mr. Hixon is the sole trustee of the Dylan Hixon Childrens Trust FBO Casimir R. Hixon. Mr. Hixon may be deemed to have beneficial ownership of the securities held by such trust. Mr. Hixon disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein

Read SEC document
August 14, 2026 Filed Aug 17, 2026 13:57 UTC
Hixon DylanDirector
PurchaseCommon Stock 31,864 $3.75 $119,490.00
Disclosure

SEC source: 0001828536-26-000103 · wk-form4_1786975039.xml · nonDerivative · entry 3

Hixon Dylan · CIK 0002063923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · By son

Disclosed balance after: 31,864

F3 · ownership.nature: This transaction involved the purchase of shares of common stock by the reporting persons son. The reporting person disclaims beneficial ownership of the securities held by his son, and this report shall not be deemed an admission that the reporting person is the beneficial owner of the securities for purposes of Section 16 or for any other purpose.

Read SEC document
August 14, 2026 Filed Aug 17, 2026 13:57 UTC
Hixon DylanDirector
PurchaseCommon Stock 26,809 $3.73 $100,078.00
Disclosure

SEC source: 0001828536-26-000103 · wk-form4_1786975039.xml · nonDerivative · entry 2

Hixon Dylan · CIK 0002063923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by DHH Hixon Family Great Grandchildrens Trust FBO Soren A. Hixon

Disclosed balance after: 26,809

F2 · ownership.nature: Mr. Hixon is the sole trustee of the DHH Hixon Family Great Grandchildrens Trust FBO Soren A. Hixon. Mr. Hixon may be deemed to have beneficial ownership of the securities held by such trust. Mr. Hixon disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

Read SEC document
August 14, 2026 Filed Aug 17, 2026 13:57 UTC
Hixon DylanDirector
PurchaseCommon Stock 26,845 $3.73 $100,212.39
Disclosure

SEC source: 0001828536-26-000103 · wk-form4_1786975039.xml · nonDerivative · entry 1

Hixon Dylan · CIK 0002063923 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Held by DHH Hixon Family Great Grandchildrens Trust FBO Casimir R. Hixon

Disclosed balance after: 26,845

F1 · ownership.nature: Mr. Hixon is the sole trustee of the DHH Hixon Family Great Grandchildrens Trust FBO Casimir R. Hixon. Mr. Hixon may be deemed to have beneficial ownership of the securities held by such trust. Mr. Hixon disclaims beneficial ownership of such securities except to the extent of his pecuniary interest therein.

Read SEC document
August 04, 2026 Filed Aug 6, 2026 20:33 UTC
Dahiya NitinChief Financial Officer
GrantPerformance Restricted Stock Units · Derivative 400,000 $0.00 $0.00
Disclosure

SEC source: 0002148111-26-000003 · wk-form4_1786048434.xml · derivative · entry 2

Dahiya Nitin · CIK 0002148111 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

Underlying: Common Stock · 400,000 shares

Expires 2030-09-30

F2 · derivative.exercise_price: Represents an award of performance restricted stock units ("PRSUs"). The PRSUs are eligible to vest based on certain share price targets commencing on the first anniversary of the vesting commencement date, subject to the applicable minimum service period. The PRSUs will vest in three tranches as follows: (i) 50,000 upon achievement of an $8.00 Share Price Target, provided the reporting person is continuously employed through the first anniversary of the vesting commencement date for a minimum of twelve months, (ii) 150,000 upon achievement of a $10.00 Share Price Target, provided the reporting person remains continuously employed through the second anniversary of the vesting commencement date for a minimum of twenty-four months, and (iii) 200,000 upon achievement of a $12.00 Share Price Target, provided the reporting person remains continuously employed through the third anniversary of the vesting commencement date for a minimum of thirty-six months.

F2 · shares: Represents an award of performance restricted stock units ("PRSUs"). The PRSUs are eligible to vest based on certain share price targets commencing on the first anniversary of the vesting commencement date, subject to the applicable minimum service period. The PRSUs will vest in three tranches as follows: (i) 50,000 upon achievement of an $8.00 Share Price Target, provided the reporting person is continuously employed through the first anniversary of the vesting commencement date for a minimum of twelve months, (ii) 150,000 upon achievement of a $10.00 Share Price Target, provided the reporting person remains continuously employed through the second anniversary of the vesting commencement date for a minimum of twenty-four months, and (iii) 200,000 upon achievement of a $12.00 Share Price Target, provided the reporting person remains continuously employed through the third anniversary of the vesting commencement date for a minimum of thirty-six months.

F2 · derivative.exercise_date: Represents an award of performance restricted stock units ("PRSUs"). The PRSUs are eligible to vest based on certain share price targets commencing on the first anniversary of the vesting commencement date, subject to the applicable minimum service period. The PRSUs will vest in three tranches as follows: (i) 50,000 upon achievement of an $8.00 Share Price Target, provided the reporting person is continuously employed through the first anniversary of the vesting commencement date for a minimum of twelve months, (ii) 150,000 upon achievement of a $10.00 Share Price Target, provided the reporting person remains continuously employed through the second anniversary of the vesting commencement date for a minimum of twenty-four months, and (iii) 200,000 upon achievement of a $12.00 Share Price Target, provided the reporting person remains continuously employed through the third anniversary of the vesting commencement date for a minimum of thirty-six months.

Read SEC document
August 04, 2026 Filed Aug 6, 2026 20:33 UTC
Dahiya NitinChief Financial Officer
GrantCommon Stock 400,000 $0.00 $0.00
Disclosure

SEC source: 0002148111-26-000003 · wk-form4_1786048434.xml · nonDerivative · entry 1

Dahiya Nitin · CIK 0002148111 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 400,000

F1 · shares: Represents an award of restricted stock units ("RSUs"). Each RSU represents a contingent right to receive one share of the Issuer 's Common Stock. The RSUs will vest as to 25% of the underlying shares on September 30, 2027, and as to the remaining of the underlying shares in 12 substantially similar quarterly installments thereafter.

Read SEC document
July 06, 2026 Filed Jul 8, 2026 21:12 UTC
Beer Michael ThomasChief Financial Officer
Exercise / conversionStock Option · Derivative 50,000 $0.00 Strike: $1.17 $0.00
Disclosure

SEC source: 0001870889-26-000010 · wk-form4_1783545154.xml · derivative · entry 3

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 700,000

Underlying: Common Stock · 50,000 shares

Expires 2034-05-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The stock option vested as to 25% of the underlying shares on June 30, 2025, and as to the remaining of the underlying shares in 12 substantially similar quarterly installments thereafter.

Read SEC document
July 06, 2026 Filed Jul 8, 2026 21:12 UTC
Beer Michael ThomasChief Financial Officer
SaleCommon Stock 65,000 $4.08 $265,200.00
Disclosure

SEC source: 0001870889-26-000010 · wk-form4_1783545154.xml · nonDerivative · entry 2

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,021,806

F1 · shares: The sale reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan.

Read SEC document
July 06, 2026 Filed Jul 8, 2026 21:12 UTC
Beer Michael ThomasChief Financial Officer
Exercise / conversionCommon Stock 50,000 $1.17 $58,500.00
Disclosure

SEC source: 0001870889-26-000010 · wk-form4_1783545154.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,086,806

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:06 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
Tax withholdingCommon Stock 141,682 $4.71 $667,322.22
Disclosure

SEC source: 0001898769-26-000007 · wk-form4_1783022803.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,449,991

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:06 UTC
Beer Michael ThomasChief Financial Officer
Tax withholdingCommon Stock 24,139 $4.71 $113,694.69
Disclosure

SEC source: 0001870889-26-000009 · wk-form4_1783022787.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,036,806

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
June 30, 2026 Filed Jul 2, 2026 20:06 UTC
Ladwa AkshayChief Operations Officer
Tax withholdingCommon Stock 52,721 $4.71 $248,315.91
Disclosure

SEC source: 0001977206-26-000009 · wk-form4_1783022794.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,088,615

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
June 25, 2026 Filed Jun 26, 2026 21:04 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
GrantStock Option · Derivative 3,886,000 $0.00 Strike: $4.26 $0.00
Disclosure

SEC source: 0001828536-26-000079 · wk-form4_1782507871.xml · derivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,886,000

Underlying: Common Stock · 3,886,000 shares

Expires 2033-06-25

F1 · derivative.exercise_date: The stock option vests in three substantially equal annual installments beginning on March 31, 2027.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 20:42 UTC GrantCommon Stock 19,153 $0.00 $0.00
Disclosure

SEC source: 0001828536-26-000077 · wk-form4_1780346576.xml · nonDerivative · entry 1

Unwin Stephanie · CIK 0002014396 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 297,245

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest (subject to the reporting person's continued service on the Board) on June 1, 2027.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 20:42 UTC GrantCommon Stock 22,026 $0.00 $0.00
Disclosure

SEC source: 0001828536-26-000073 · wk-form4_1780346552.xml · nonDerivative · entry 1

Paulson Larry · CIK 0001509559 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 523,794

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest (subject to the reporting person's continued service on the Board) on June 1, 2027.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 20:42 UTC GrantCommon Stock 22,026 $0.00 $0.00
Disclosure

SEC source: 0001828536-26-000072 · wk-form4_1780346546.xml · nonDerivative · entry 1

Ertel Thomas R · CIK 0001725272 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 387,814

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest (subject to the reporting person's continued service on the Board) on June 1, 2027.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 20:42 UTC GrantCommon Stock 19,153 $0.00 $0.00
Disclosure

SEC source: 0001828536-26-000075 · wk-form4_1780346564.xml · nonDerivative · entry 1

Fariello Theresa M · CIK 0001965441 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 318,217

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest (subject to the reporting person's continued service on the Board) on June 1, 2027.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 20:42 UTC GrantCommon Stock 22,026 $0.00 $0.00
Disclosure

SEC source: 0001828536-26-000076 · wk-form4_1780346570.xml · nonDerivative · entry 1

Mandanas Mary Beth · CIK 0001857599 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 372,864

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest (subject to the reporting person's continued service on the Board) on June 1, 2027.

Read SEC document
May 29, 2026 Filed Jun 1, 2026 20:42 UTC
Hixon DylanDirector
GrantCommon Stock 19,153 $0.00 $0.00
Disclosure

SEC source: 0001828536-26-000074 · wk-form4_1780346558.xml · nonDerivative · entry 1

Hixon Dylan · CIK 0002063923 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 117,602

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest (subject to the reporting person's continued service on the Board) on June 1, 2027.

Read SEC document
April 06, 2026 Filed Apr 8, 2026 22:56 UTC
Beer Michael ThomasChief Financial Officer
Exercise / conversionStock Option · Derivative 50,000 $0.00 Strike: $1.17 $0.00
Disclosure

SEC source: 0001870889-26-000006 · wk-form4_1775688978.xml · derivative · entry 3

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 750,000

Underlying: Common Stock · 50,000 shares

Expires 2034-05-16

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_date: The stock option vested as to 25% of the underlying shares on June 30, 2025, and as to the remaining of the underlying shares in 12 substantially similar quarterly installments thereafter.

Read SEC document
April 06, 2026 Filed Apr 8, 2026 22:56 UTC
Beer Michael ThomasChief Financial Officer
SaleCommon Stock 65,000 $3.18 $206,700.00
Disclosure

SEC source: 0001870889-26-000006 · wk-form4_1775688978.xml · nonDerivative · entry 2

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,060,945

F1 · shares: The sales reported in this Form 4 were effected pursuant to a Rule 10b5-1 trading plan adopted on December 19, 2025.

Read SEC document
April 06, 2026 Filed Apr 8, 2026 22:56 UTC
Beer Michael ThomasChief Financial Officer
Exercise / conversionCommon Stock 50,000 $1.17 $58,500.00
Disclosure

SEC source: 0001870889-26-000006 · wk-form4_1775688978.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,125,945

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

Read SEC document
March 31, 2026 Filed Apr 1, 2026 15:29 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
PurchaseCommon Stock 12,500 $3.21 $40,120.00
Disclosure

SEC source: 0001828536-26-000026 · wk-form4_1775057382.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,921,594

F1 · shares: The shares are purchased in one transaction at a price given in Column 4.

F2 · balance_after: Reflects a transfer of securities in a transaction exempt from reporting pursuant to Rule 16a-12.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:15 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
Tax withholdingCommon Stock 329,921 $3.30 $1,088,739.30
Disclosure

SEC source: 0001828536-26-000032 · wk-form4_1775160926.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,591,673

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:15 UTC
Beer Michael ThomasChief Financial Officer
Tax withholdingCommon Stock 28,738 $3.30 $94,835.40
Disclosure

SEC source: 0001828536-26-000030 · wk-form4_1775160901.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,075,945

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
March 31, 2026 Filed Apr 2, 2026 20:15 UTC
Ladwa AkshayChief Operations Officer
Tax withholdingCommon Stock 147,984 $3.30 $488,347.20
Disclosure

SEC source: 0001828536-26-000031 · wk-form4_1775160910.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,141,336

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units. Not a market sale.

Read SEC document
March 25, 2026 Filed Mar 26, 2026 17:07 UTC PurchaseCommon Stock 5,000 $3.65 $18,250.00
Disclosure

SEC source: 0001857599-26-000002 · wk-form4_1774544850.xml · nonDerivative · entry 1

Mandanas Mary Beth · CIK 0001857599 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 350,838

F1 · price: The shares are purchased in one transaction at a price given in Column 4.

Read SEC document
March 12, 2026 Filed Mar 16, 2026 21:28 UTC
Beer Michael ThomasChief Financial Officer
GrantCommon Stock 150,000 $0.00 $0.00
Disclosure

SEC source: 0001870889-26-000004 · wk-form4_1773696480.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,104,683

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest with a 3-Year vesting period (subject to the Reporting Person's continued service to the Company or its subsidiaries through the applicable vesting date), with 33.2% vesting after 12 months, followed by quarterly vesting of 8.35%. Vesting commencement date is 3/31/2026.

Read SEC document
March 12, 2026 Filed Mar 16, 2026 21:28 UTC
Ladwa AkshayChief Operations Officer
GrantCommon Stock 475,000 $0.00 $0.00
Disclosure

SEC source: 0001977206-26-000006 · wk-form4_1773696516.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,289,320

F1 · shares: Reflects an award of restricted stock units (RSUs). Each RSU represents a contingent right to receive one share of Common Stock. The RSUs vest with a 3-Year vesting period (subject to the Reporting Person's continued service to the Company or its subsidiaries through the applicable vesting date), with 33.2% vesting after 12 months, followed by quarterly vesting of 8.35%. Vesting commencement date is 3/31/2026.

Read SEC document
March 05, 2026 Filed Mar 6, 2026 21:07 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
Tax withholdingCommon Stock 68,737 $3.00 $206,211.00
Disclosure

SEC source: 0001898769-26-000003 · wk-form4_1772831257.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,021,900

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

Read SEC document
March 05, 2026 Filed Mar 6, 2026 21:06 UTC
Ladwa AkshayChief Operations Officer
Tax withholdingCommon Stock 10,064 $3.00 $30,192.00
Disclosure

SEC source: 0001977206-26-000004 · wk-form4_1772831175.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,814,320

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

Read SEC document
March 04, 2026 Filed Mar 5, 2026 16:53 UTC PurchaseCommon Stock 5,450 $3.37 $18,365.96
Disclosure

SEC source: 0001725272-26-000002 · wk-form4_1772729602.xml · nonDerivative · entry 1

Ertel Thomas R · CIK 0001725272 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 365,788

F1 · price: The shares are purchased in one transaction at a price given in Column 4.

Read SEC document
March 02, 2026 Filed Mar 4, 2026 15:07 UTC
Ladwa AkshayChief Operations Officer
PurchaseCommon Stock 4,000 $3.09 $12,340.00
Disclosure

SEC source: 0001977206-26-000002 · wk-form4_1772636822.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,824,384

F1 · price: The shares are purchased in one transaction at a price given in Column 4.

Read SEC document
February 27, 2026 Filed Mar 2, 2026 16:19 UTC PurchaseCommon Stock 5,000 $3.15 $15,726.00
Disclosure

SEC source: 0001509559-26-000002 · wk-form4_1772468346.xml · nonDerivative · entry 1

Paulson Larry · CIK 0001509559 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 501,768

F1 · price: The shares are purchased in one transaction at a price given in Column 4.

Read SEC document
February 26, 2026 Filed Feb 26, 2026 18:47 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
PurchaseCommon Stock 7,500 $3.26 $24,412.50
Disclosure

SEC source: 0001828536-26-000014 · wk-form4_1772131659.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,090,637

F1 · price: The shares are purchased in one transaction at a price given in Column 4.

Read SEC document
January 30, 2026 Filed Jan 30, 2026 21:09 UTC
Beer Michael ThomasChief Financial Officer
Tax withholdingCommon Stock 103,100 $5.43 $559,833.00
Disclosure

SEC source: 0001870889-26-000002 · wk-form4_1769807388.xml · nonDerivative · entry 4

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,354,683

F2 · kind: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units earned on January 30, 2026.

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January 30, 2026 Filed Jan 30, 2026 21:09 UTC
Beer Michael ThomasChief Financial Officer
GrantCommon Stock 200,000 $0.00 $0.00
Disclosure

SEC source: 0001870889-26-000002 · wk-form4_1769807388.xml · nonDerivative · entry 3

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,457,783

F1 · kind: On April 15, 2024, the Reporting Person was granted a performance-based restricted stock unit ("PSU") award under the Energy Vault Inc.'s 2022 Equity Incentive Plan covering 600,000 Performance RSUs that will vest immediately upon achievement of the following stock performance objectives: the Company's share price achieving a daily closing trading price at or above certain price levels for 20 trading days within any 30 trading day period during the period beginning on the first anniversary of the date of grant and ending on the fourth anniversary of the date of grant: $3.50, $4.50, and $5.50 per share. Upon the achievement of each price threshold as described in this paragraph, approximately 33% of the Performance RSUs (200,000 shares) shall vest, subject to the Reporting Person's continued service. The company achieved the price threshold of $3.50 on December 31, 2025 and the price threshold of $4.50 on January 7, 2026.

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January 30, 2026 Filed Jan 30, 2026 21:09 UTC
Beer Michael ThomasChief Financial Officer
Tax withholdingCommon Stock 77,046 $4.61 $355,182.06
Disclosure

SEC source: 0001870889-26-000002 · wk-form4_1769807388.xml · nonDerivative · entry 2

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,257,783

F2 · kind: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units earned on January 30, 2026.

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January 30, 2026 Filed Jan 30, 2026 21:09 UTC
Beer Michael ThomasChief Financial Officer
GrantCommon Stock 200,000 $0.00 $0.00
Disclosure

SEC source: 0001870889-26-000002 · wk-form4_1769807388.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,334,829

F1 · kind: On April 15, 2024, the Reporting Person was granted a performance-based restricted stock unit ("PSU") award under the Energy Vault Inc.'s 2022 Equity Incentive Plan covering 600,000 Performance RSUs that will vest immediately upon achievement of the following stock performance objectives: the Company's share price achieving a daily closing trading price at or above certain price levels for 20 trading days within any 30 trading day period during the period beginning on the first anniversary of the date of grant and ending on the fourth anniversary of the date of grant: $3.50, $4.50, and $5.50 per share. Upon the achievement of each price threshold as described in this paragraph, approximately 33% of the Performance RSUs (200,000 shares) shall vest, subject to the Reporting Person's continued service. The company achieved the price threshold of $3.50 on December 31, 2025 and the price threshold of $4.50 on January 7, 2026.

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January 22, 2026 Filed Jan 23, 2026 21:09 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
Tax withholdingCommon Stock 91,374 $4.61 $421,234.14
Disclosure

SEC source: 0001828536-26-000011 · wk-form4_1769202575.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,083,137

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

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January 22, 2026 Filed Jan 23, 2026 21:09 UTC
Beer Michael ThomasChief Financial Officer
Tax withholdingCommon Stock 15,693 $4.61 $72,344.73
Disclosure

SEC source: 0001828536-26-000010 · wk-form4_1769202570.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,134,829

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

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January 22, 2026 Filed Jan 23, 2026 21:09 UTC
Ladwa AkshayChief Operations Officer
Tax withholdingCommon Stock 15,711 $4.61 $72,427.71
Disclosure

SEC source: 0001828536-26-000009 · wk-form4_1769202564.xml · nonDerivative · entry 1

Ladwa Akshay · CIK 0001977206 · Chief Operations Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,820,384

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

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January 22, 2026 Filed Jan 23, 2026 21:09 UTC
Wiese ChristopherPresident, Energy Vault Labs
Tax withholdingCommon Stock 6,808 $4.61 $31,384.88
Disclosure

SEC source: 0001828536-26-000008 · wk-form4_1769202560.xml · nonDerivative · entry 1

Wiese Christopher · CIK 0001908958 · President, Energy Vault Labs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,128,960

F1 · shares: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

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January 15, 2026 Filed Jan 20, 2026 21:00 UTC SaleCommon Stock 3,000,000 $5.65 $16,950,000.00
Disclosure

SEC source: 0001493152-26-002946 · ownership.xml · nonDerivative · entry 1

SOFTBANK VISION FUND (AIV M2) L.P. · CIK 0001805808 · 10% owner

SB INVESTMENT ADVISERS (UK) LTD · CIK 0001731509 · 10% owner

Joint disclosure: these amounts are not allocated separately to each reporting owner.

10b5-1 filing: No plan indicated

Ownership: Indirect · See footnote

Disclosed balance after: 15,535,631

F1 · ownership.nature: Securities held of record by SoftBank Vision Fund (AIV M2) L.P. ("AIV M2"). SB Investment Advisers (UK) Limited ("SBIA UK") has been appointed as alternative investment fund manager ("AIFM") and is exclusively responsible for managing AIV M2 in accordance with the Alternative Investment Fund Managers Directive and is authorized and regulated by the UK Financial Conduct Authority accordingly. As AIFM of AIV M2, SBIA UK is exclusively responsible for making all decisions related to the acquisition, structuring, financing, voting and disposal of AIV M2's investments

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December 23, 2025 Filed Dec 23, 2025 21:40 UTC
Beer Michael ThomasChief Financial Officer
SaleCommon Stock 50,000 $4.91 $245,540.00
Disclosure

SEC source: 0001870889-25-000005 · wk-form4_1766525998.xml · nonDerivative · entry 1

Beer Michael Thomas · CIK 0001870889 · Chief Financial Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,150,522

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $4.660 to $5.110. The reporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within the range set forth in this footnote.

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December 12, 2025 Filed Dec 12, 2025 21:10 UTC
Wiese ChristopherPresident, Energy Vault Labs
Tax withholdingCommon Stock 8,751 $3.44 $30,103.44
Disclosure

SEC source: 0001828536-25-000208 · wk-form4_1765573802.xml · nonDerivative · entry 1

Wiese Christopher · CIK 0001908958 · President, Energy Vault Labs

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,135,768

F1 · kind: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

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December 11, 2025 Filed Dec 12, 2025 21:10 UTC
Piconi RobertDirector · Chief Executive Officer · 10% owner
Tax withholdingCommon Stock 8,612 $3.44 $29,625.28
Disclosure

SEC source: 0001828536-25-000209 · wk-form4_1765573811.xml · nonDerivative · entry 1

Piconi Robert · CIK 0001898769 · Director · Chief Executive Officer · 10% owner

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 20,188,630

F1 · kind: Represents shares withheld by the Issuer to satisfy the reporting person's tax liability on vesting of restricted stock units.

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Value uses the disclosed total when available, otherwise shares × reported transaction price. It is not an estimate of exercise cash cost or investment performance.