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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 purchased at each separate price within the range set forth in this footnote."}],"balance_after":6443192,"source":{"system":"sec-edgar","filing":"0001828536-23-000029","document":"wf-form4_167900020386036.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000182853623000029/wf-form4_167900020386036.xml","form_type":"4"}},{"id":1952510,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2023-03-15T21:17:24.000Z","date":"2023-03-14","kind":"purchase","acquired":true,"shares":66000,"price":2.2681,"value":149694.6,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $2.22 to $2.28. 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 purchased at each separate price within the range set forth in this footnote."}],"balance_after":6403192,"source":{"system":"sec-edgar","filing":"0001828536-23-000027","document":"wf-form4_167891502995708.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000182853623000027/wf-form4_167891502995708.xml","form_type":"4"}},{"id":2080037,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Unit","published_at":"2022-12-20T22:44:31.000Z","date":"2022-12-16","kind":"grant","acquired":true,"shares":1194288,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Reporting Person was granted Restricted Stock Units (\"RSU\") which represent a contingent right to receive one share of Common Stock for each RSU. The RSUs vest (subject to the Reporting Person's continued service to the Company or its subsidiaries through the applicable vesting date) as to 33.2% on October 31, 2023 and as to 8.35% upon completion of each three-month period thereafter, such that the RSUs will be fully vested on October 31, 2025, provided that any RSU which would be fractionally vested shall be accumulated and shall vest on the first vesting date upon which a whole RSU has accumulated."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Reporting Person was granted Restricted Stock Units (\"RSU\") which represent a contingent right to receive one share of Common Stock for each RSU. The RSUs vest (subject to the Reporting Person's continued service to the Company or its subsidiaries through the applicable vesting date) as to 33.2% on October 31, 2023 and as to 8.35% upon completion of each three-month period thereafter, such that the RSUs will be fully vested on October 31, 2025, provided that any RSU which would be fractionally vested shall be accumulated and shall vest on the first vesting date upon which a whole RSU has accumulated."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Reporting Person was granted Restricted Stock Units (\"RSU\") which represent a contingent right to receive one share of Common Stock for each RSU. The RSUs vest (subject to the Reporting Person's continued service to the Company or its subsidiaries through the applicable vesting date) as to 33.2% on October 31, 2023 and as to 8.35% upon completion of each three-month period thereafter, such that the RSUs will be fully vested on October 31, 2025, provided that any RSU which would be fractionally vested shall be accumulated and shall vest on the first vesting date upon which a whole RSU has accumulated."}],"balance_after":1194288,"derivative":{"underlying":"Common Stock","underlying_shares":1194288},"source":{"system":"sec-edgar","filing":"0001104659-22-128722","document":"tm2233149-1_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922128722/tm2233149-1_4seq1.xml","form_type":"4"}},{"id":2116466,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2022-11-16T01:47:56.000Z","date":"2022-11-10","kind":"grant","acquired":true,"shares":3900000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Reporting Person received Restricted Stock Units (\"RSUs\") that represent a contingent right to receive one share of Common Stock for each RSU upon the satisfaction of applicable vesting conditions. The RSUs do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The RSUs will vest as to 33% of the underlying shares upon the achievement of each of the Issuer's share price achieving a daily closing trading price at or above $15.00, $17.50, and $20.00 per share for 20 trading days within any 30 trading day period during the period beginning on February 11, 2022 and ending on February 11, 2029."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Reporting Person received Restricted Stock Units (\"RSUs\") that represent a contingent right to receive one share of Common Stock for each RSU upon the satisfaction of applicable vesting conditions. The RSUs do not expire."}],"balance_after":3900000,"derivative":{"underlying":"Common Stock","underlying_shares":3900000},"source":{"system":"sec-edgar","filing":"0001104659-22-119258","document":"tm2230662-1_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922119258/tm2230662-1_4seq1.xml","form_type":"4"}},{"id":2116465,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Restricted Stock Units","published_at":"2022-11-16T01:47:56.000Z","date":"2022-11-10","kind":"grant","acquired":true,"shares":2600000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Reporting Person received Restricted Stock Units (\"RSUs\") that represent a contingent right to receive one share of Common Stock for each RSU upon the satisfaction of applicable vesting conditions. The RSUs do not expire."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The RSUs vest as to 25% of the underlying shares on February 28, 2023, and as to the remaining of the underlying shares in 12 substantially similar quarterly installments thereafter."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Reporting Person received Restricted Stock Units (\"RSUs\") that represent a contingent right to receive one share of Common Stock for each RSU upon the satisfaction of applicable vesting conditions. The RSUs do not expire."}],"balance_after":2600000,"derivative":{"underlying":"Common Stock","underlying_shares":2600000},"source":{"system":"sec-edgar","filing":"0001104659-22-119258","document":"tm2230662-1_4seq1.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922119258/tm2230662-1_4seq1.xml","form_type":"4"}},{"id":2174087,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-08-25T11:18:09.000Z","date":"2022-08-24","kind":"purchase","acquired":true,"shares":9450,"price":5.2071,"value":49207.095,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.20 to $5.21. 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 purchased at each separate price within the range set forth in this footnote."}],"balance_after":6337192,"source":{"system":"sec-edgar","filing":"0001104659-22-094221","document":"tm2224390-2_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922094221/tm2224390-2_4seq1.xml","form_type":"4"}},{"id":2175141,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-08-24T11:09:01.000Z","date":"2022-08-23","kind":"purchase","acquired":true,"shares":9400,"price":5.2198,"value":49066.12,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.21 to $5.23. The\nreporting person undertakes to provide the Issuer, any security holder of the Issuer, or the staff of the Securities and Exchange Commission, upon request, full\ninformation regarding the number of shares purchased at each separate price within the range set forth in this footnote."}],"balance_after":6327742,"source":{"system":"sec-edgar","filing":"0001104659-22-093847","document":"tm2224390-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922093847/tm2224390-1_4seq1.xml","form_type":"4"}},{"id":2178480,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-08-19T10:51:25.000Z","date":"2022-08-18","kind":"purchase","acquired":true,"shares":18954,"price":5.2555,"value":99612.747,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported in Column 4 is a weighted average price. These shares were purchased in multiple transactions at prices ranging from $5.19 to $5.30. 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 purchased at each separate price within the range set forth in this footnote."}],"balance_after":6318342,"source":{"system":"sec-edgar","filing":"0001104659-22-092769","document":"tm2224129-1_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922092769/tm2224129-1_4seq1.xml","form_type":"4"}},{"id":2270644,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-05-17T01:04:02.000Z","date":"2022-05-12","kind":"other","acquired":true,"shares":73776,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"Represents an acquisition of securities from an in-kind distribution, and not a purchase or sale, without additional consideration paid, and is therefore an exempt, non-matchable acquisition pursuant to Section 16(b)."}],"balance_after":6299388,"source":{"system":"sec-edgar","filing":"0001104659-22-061595","document":"tm2215768-4_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922061595/tm2215768-4_4seq1.xml","form_type":"4"}},{"id":2394824,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-02-16T01:21:52.000Z","date":"2022-02-11","kind":"grant","acquired":true,"shares":4307946,"ownership":{"direct":false,"nature":"Held by Piconi Family 2021 Delaware Trust"},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"In connection with the merger described in that certain Business Combination Agreement and Plan of Reorganization, dated as of September 8, 2021, by and among Novus Capital Corporation II, now known as Energy Vault Holdings, Inc. (\"Energy Vault Holdings\") (the \"Issuer\"), NCCII Merger Corp. (\"Merger Sub\"), and Energy Vault, Inc. (\"Energy Vault\"), pursuant to which Merger Sub merged with and into Energy Vault, with Energy Vault surviving as a wholly-owned subsidiary of the Issuer (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The Reporting Person received shares of Common Stock in exchange for 636,000 shares of common stock in Energy Vault. On the effective date of the Merger, the closing price of the Issuer's Common Stock was $11.55 per share."}],"balance_after":4307946,"source":{"system":"sec-edgar","filing":"0001104659-22-023993","document":"tm225795-22_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922023993/tm225795-22_4seq1.xml","form_type":"4"}},{"id":2394823,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-02-16T01:21:52.000Z","date":"2022-02-11","kind":"grant","acquired":true,"shares":4307946,"ownership":{"direct":false,"nature":"Held by Piconi 2021 Delaware Trust"},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"In connection with the merger described in that certain Business Combination Agreement and Plan of Reorganization, dated as of September 8, 2021, by and among Novus Capital Corporation II, now known as Energy Vault Holdings, Inc. (\"Energy Vault Holdings\") (the \"Issuer\"), NCCII Merger Corp. (\"Merger Sub\"), and Energy Vault, Inc. (\"Energy Vault\"), pursuant to which Merger Sub merged with and into Energy Vault, with Energy Vault surviving as a wholly-owned subsidiary of the Issuer (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"The Reporting Person received shares of Common Stock in exchange for 636,000 shares of common stock in Energy Vault. On the effective date of the Merger, the closing price of the Issuer's Common Stock was $11.55 per share."}],"balance_after":4307946,"source":{"system":"sec-edgar","filing":"0001104659-22-023993","document":"tm225795-22_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922023993/tm225795-22_4seq1.xml","form_type":"4"}},{"id":2394822,"issuer":{"id":5363,"kind":"organization","name":"Energy Vault Holdings, Inc."},"owners":[{"id":32988,"kind":"person","name":"Piconi Robert","position":1,"cik":"0001898769","reported_name":"Piconi Robert","relationship":{"director":true,"officer":true,"ten_percent_owner":true,"other":false,"officer_title":"Chief Executive Officer"}}],"security":"Common Stock","published_at":"2022-02-16T01:21:52.000Z","date":"2022-02-11","kind":"grant","acquired":true,"shares":6225612,"ownership":{"direct":true},"footnotes":[{"field":"security","element":"securityTitle","label":"F1","text":"In connection with the merger described in that certain Business Combination Agreement and Plan of Reorganization, dated as of September 8, 2021, by and among Novus Capital Corporation II, now known as Energy Vault Holdings, Inc. (\"Energy Vault Holdings\") (the \"Issuer\"), NCCII Merger Corp. (\"Merger Sub\"), and Energy Vault, Inc. (\"Energy Vault\"), pursuant to which Merger Sub merged with and into Energy Vault, with Energy Vault surviving as a wholly-owned subsidiary of the Issuer (the \"Merger\")."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Reporting Person received shares of Common Stock in exchange for 919,113 shares of common stock in Energy Vault. On the effective date of the Merger, the closing price of the Issuer's Common Stock was $11.55 per share."}],"balance_after":6225612,"source":{"system":"sec-edgar","filing":"0001104659-22-023993","document":"tm225795-22_4seq1.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1898769/000110465922023993/tm225795-22_4seq1.xml","form_type":"4"}}]}