{"transactions":[{"id":2586650,"issuer":{"id":114899,"kind":"organization","name":"Volta Inc.","symbol":"VLTA"},"owners":[{"id":135925,"kind":"organization","name":"Tortoise Sponsor II LLC","position":1,"cik":"0001819617","reported_name":"Tortoise Sponsor II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Ordinary Shares","published_at":"2021-08-30T18:31:50.000Z","date":"2021-08-26","kind":"exercise","acquired":false,"shares":8520000,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Class B Ordinary Shares are automatically convertible into shares of Class A Common Stock at the time of Tortoise Acquisition Corp. II's (\"TortoiseCorp II\") initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. In connection with the domestication of TortoiseCorp II and the closing of the business combination among TortoiseCorp II, SNPR Merger Sub I, Inc., SNPR Merger Sub II, LLC and Volta Industries, Inc. on August 26, 2021, the Reporting Person's Class B Ordinary Shares automatically converted into shares of TortoiseCorp II's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp II changed its name to \"Volta Inc.\""},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Class B Ordinary Shares are automatically convertible into shares of Class A Common Stock at the time of Tortoise Acquisition Corp. II's (\"TortoiseCorp II\") initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. In connection with the domestication of TortoiseCorp II and the closing of the business combination among TortoiseCorp II, SNPR Merger Sub I, Inc., SNPR Merger Sub II, LLC and Volta Industries, Inc. on August 26, 2021, the Reporting Person's Class B Ordinary Shares automatically converted into shares of TortoiseCorp II's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp II changed its name to \"Volta Inc.\""},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Class B Ordinary Shares are automatically convertible into shares of Class A Common Stock at the time of Tortoise Acquisition Corp. II's (\"TortoiseCorp II\") initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. In connection with the domestication of TortoiseCorp II and the closing of the business combination among TortoiseCorp II, SNPR Merger Sub I, Inc., SNPR Merger Sub II, LLC and Volta Industries, Inc. on August 26, 2021, the Reporting Person's Class B Ordinary Shares automatically converted into shares of TortoiseCorp II's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp II changed its name to \"Volta Inc.\""},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Class B Ordinary Shares are automatically convertible into shares of Class A Common Stock at the time of Tortoise Acquisition Corp. II's (\"TortoiseCorp II\") initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. In connection with the domestication of TortoiseCorp II and the closing of the business combination among TortoiseCorp II, SNPR Merger Sub I, Inc., SNPR Merger Sub II, LLC and Volta Industries, Inc. on August 26, 2021, the Reporting Person's Class B Ordinary Shares automatically converted into shares of TortoiseCorp II's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp II changed its name to \"Volta Inc.\""},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Tortoise Sponsor II LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of Tortoise Sponsor II LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC and TortoiseEcofin Invesments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the Class B Ordinary Shares held directly by Tortoise Sponsor II LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 6363 College Boulevard, Overland Park, Kansas 66211."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":8520000},"source":{"system":"sec-edgar","filing":"0001213900-21-045690","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390021045690/ownership.xml","form_type":"4"}},{"id":2586649,"issuer":{"id":114899,"kind":"organization","name":"Volta Inc.","symbol":"VLTA"},"owners":[{"id":135925,"kind":"organization","name":"Tortoise Sponsor II LLC","position":1,"cik":"0001819617","reported_name":"Tortoise Sponsor II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class A Common Stock","published_at":"2021-08-30T18:31:50.000Z","date":"2021-08-26","kind":"exercise","acquired":true,"shares":8520000,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The Class B Ordinary Shares are automatically convertible into shares of Class A Common Stock at the time of Tortoise Acquisition Corp. II's (\"TortoiseCorp II\") initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date. In connection with the domestication of TortoiseCorp II and the closing of the business combination among TortoiseCorp II, SNPR Merger Sub I, Inc., SNPR Merger Sub II, LLC and Volta Industries, Inc. on August 26, 2021, the Reporting Person's Class B Ordinary Shares automatically converted into shares of TortoiseCorp II's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp II changed its name to \"Volta Inc.\""},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Tortoise Sponsor II LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of Tortoise Sponsor II LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC and TortoiseEcofin Invesments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the Class B Ordinary Shares held directly by Tortoise Sponsor II LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 6363 College Boulevard, Overland Park, Kansas 66211."}],"balance_after":8520000,"source":{"system":"sec-edgar","filing":"0001213900-21-045690","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390021045690/ownership.xml","form_type":"4"}},{"id":2627203,"issuer":{"id":109785,"kind":"organization","name":"TortoiseEcofin Acquisition Corp. III","symbol":"TRTL"},"owners":[{"id":109821,"kind":"organization","name":"TortoiseEcofin Sponsor III LLC","position":1,"cik":"0001847113","reported_name":"TortoiseEcofin Sponsor III LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Ordinary Shares","published_at":"2021-07-22T16:23:22.000Z","date":"2021-07-22","kind":"sale","acquired":false,"shares":1650000,"price":0.003,"value":4950.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Includes 1,125,000 Class B Ordinary Shares that are subject to forfeiture if the underwriters in the Issuer's initial public offering do not exercise their over-allotment option."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"TortoiseEcofin Sponsor III LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of TortoiseEcofin Sponsor III LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the Class B Ordinary Shares held directly by TortoiseEcofin Sponsor III LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 6363 College Boulevard, Overland Park, Kansas 66211."}],"balance_after":6855000,"derivative":{"underlying":"Class A Ordinary Shares","underlying_shares":1650000},"source":{"system":"sec-edgar","filing":"0001213900-21-038114","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390021038114/ownership.xml","form_type":"4"}},{"id":2628248,"issuer":{"id":109785,"kind":"organization","name":"TortoiseEcofin Acquisition Corp. III","symbol":"TRTL"},"owners":[{"id":109821,"kind":"organization","name":"TortoiseEcofin Sponsor III LLC","position":1,"cik":"0001847113","reported_name":"TortoiseEcofin Sponsor III LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Ordinary Shares","published_at":"2021-07-21T16:19:35.000Z","date":"2021-07-19","kind":"other","acquired":false,"shares":120000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"In connection with the Issuer's initial public offering and the appointment of Juan J. Daboub, William J. Clinton and Mary Beth Mandanas to the Issuer's Board of Directors, TortoiseEcofin Sponsor III forfeited 120,000 Class B Ordinary Shares to the Issuer and the Issuer issued 40,000 Class B Ordinary Shares to each of Juan J. Daboub, William J. Clinton and Mary Beth Mandanas."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"TortoiseEcofin Sponsor III LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of TortoiseEcofin Sponsor III LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the Class B Ordinary Shares held directly by TortoiseEcofin Sponsor III LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 6363 College Boulevard, Overland Park, Kansas 66211."}],"balance_after":8505000,"derivative":{"underlying":"Class A Ordinary Shares","underlying_shares":120000},"source":{"system":"sec-edgar","filing":"0001213900-21-037920","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390021037920/ownership.xml","form_type":"4"}},{"id":3013498,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":146166,"kind":"organization","name":"Tortoise Sponsor LLC","position":1,"cik":"0001768532","reported_name":"Tortoise Sponsor LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2020-10-05T18:03:03.000Z","date":"2020-10-01","kind":"exercise","acquired":false,"shares":4439605,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The shares of Class B Common Stock are automatically convertible into shares of Class A Common Stock at the time of TortoiseCorp's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F3","text":"The shares of Class B Common Stock are automatically convertible into shares of Class A Common Stock at the time of TortoiseCorp's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Tortoise Sponsor LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of Tortoise Sponsor LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC, and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the shares of Class B Common Stock held directly by Tortoise Sponsor LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 5100 W. 115th Place, Leawood, Kansas 66211."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":4439605},"source":{"system":"sec-edgar","filing":"0001213900-20-030169","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390020030169/ownership.xml","form_type":"4"}},{"id":3013497,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":146166,"kind":"organization","name":"Tortoise Sponsor LLC","position":1,"cik":"0001768532","reported_name":"Tortoise Sponsor LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-10-05T18:03:03.000Z","date":"2020-10-01","kind":"exercise","acquired":true,"shares":4439605,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Tortoise Sponsor LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of Tortoise Sponsor LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC, and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the shares of Class B Common Stock held directly by Tortoise Sponsor LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 5100 W. 115th Place, Leawood, Kansas 66211."}],"balance_after":4439605,"source":{"system":"sec-edgar","filing":"0001213900-20-030169","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390020030169/ownership.xml","form_type":"4"}},{"id":3013496,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":1,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":2,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2020-10-05T18:01:03.000Z","date":"2020-10-01","kind":"exercise","acquired":false,"shares":894375,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The shares of Class B Common Stock are automatically convertible into shares of Class A Common Stock at the time of TortoiseCorp's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The shares of Class B Common Stock are automatically convertible into shares of Class A Common Stock at the time of TortoiseCorp's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"TortoiseEcofin Borrower LLC is the record holder of the shares reported herein. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC, and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the shares of Class B Common Stock held directly by TortoiseEcofin Borrower LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 5100 W. 115th Place, Leawood, Kansas 66211."}],"balance_after":0,"derivative":{"underlying":"Class A Common Stock","underlying_shares":894375},"source":{"system":"sec-edgar","filing":"0001213900-20-030165","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390020030165/ownership.xml","form_type":"4"}},{"id":3013495,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":1,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":2,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2020-10-05T18:01:03.000Z","date":"2020-10-01","kind":"other","acquired":true,"shares":894375,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F3","text":"In connection with the closing of the business combination between TortoiseCorp, SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, Atlas Point Energy Infrastructure Fund, LLC (\"Atlas Point Fund\") transferred 894,375 shares of Class B Common Stock to the Reporting Person, pursuant to the Amended and Restated Forward Purchase Agreement, dated February 6, 2019, by and among TortoiseCorp, Tortoise Sponsor LLC and Atlas Point Fund, as amended by the First Amendment to Amended and Restated Forward Purchase Agreement, dated as of June 18, 2020."},{"field":"kind","element":"transactionCoding","label":"F3","text":"In connection with the closing of the business combination between TortoiseCorp, SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, Atlas Point Energy Infrastructure Fund, LLC (\"Atlas Point Fund\") transferred 894,375 shares of Class B Common Stock to the Reporting Person, pursuant to the Amended and Restated Forward Purchase Agreement, dated February 6, 2019, by and among TortoiseCorp, Tortoise Sponsor LLC and Atlas Point Fund, as amended by the First Amendment to Amended and Restated Forward Purchase Agreement, dated as of June 18, 2020."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"In connection with the closing of the business combination between TortoiseCorp, SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, Atlas Point Energy Infrastructure Fund, LLC (\"Atlas Point Fund\") transferred 894,375 shares of Class B Common Stock to the Reporting Person, pursuant to the Amended and Restated Forward Purchase Agreement, dated February 6, 2019, by and among TortoiseCorp, Tortoise Sponsor LLC and Atlas Point Fund, as amended by the First Amendment to Amended and Restated Forward Purchase Agreement, dated as of June 18, 2020."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The shares of Class B Common Stock are automatically convertible into shares of Class A Common Stock at the time of TortoiseCorp's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F4","text":"The shares of Class B Common Stock are automatically convertible into shares of Class A Common Stock at the time of TortoiseCorp's initial business combination on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"TortoiseEcofin Borrower LLC is the record holder of the shares reported herein. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC, and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the shares of Class B Common Stock held directly by TortoiseEcofin Borrower LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 5100 W. 115th Place, Leawood, Kansas 66211."}],"balance_after":894375,"derivative":{"underlying":"Class A Common Stock","underlying_shares":894375},"source":{"system":"sec-edgar","filing":"0001213900-20-030165","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390020030165/ownership.xml","form_type":"4"}},{"id":3013494,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":1,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":2,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2020-10-05T18:01:03.000Z","date":"2020-10-01","kind":"other","acquired":true,"shares":894375,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"In connection with the closing of the business combination between Tortoise Acquisition Corp. (\"TortoiseCorp\"), SHLL Merger Sub Inc. and Hyliion Inc. on October 1, 2020, the Reporting Person's shares of Class B Common Stock automatically converted into shares of TortoiseCorp's Class A Common Stock on a one-for-one basis. Upon consummation of the business combination, TortoiseCorp changed its name to \"Hyliion Holdings Corp.\" and all outstanding shares of Class A Common Stock were automatically reclassified, redesignated and changed into one share of Hyliion Holdings Corp. Common Stock."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"TortoiseEcofin Borrower LLC is the record holder of the shares reported herein. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC, and TortoiseEcofin Investments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the shares of Class B Common Stock held directly by TortoiseEcofin Borrower LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 5100 W. 115th Place, Leawood, Kansas 66211."}],"balance_after":5333980,"source":{"system":"sec-edgar","filing":"0001213900-20-030165","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390020030165/ownership.xml","form_type":"4"}},{"id":3032405,"issuer":{"id":114899,"kind":"organization","name":"Volta Inc.","symbol":"VLTA"},"owners":[{"id":135925,"kind":"organization","name":"Tortoise Sponsor II LLC","position":1,"cik":"0001819617","reported_name":"Tortoise Sponsor II LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"TortoiseEcofin Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"TortoiseEcofin Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Ordinary Shares","published_at":"2020-09-14T16:22:34.000Z","date":"2020-09-10","kind":"other","acquired":false,"shares":105000,"price":0,"value":0.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"In connection with the Issuer's initial public offering and the appointment of Juan J. Daboub, Karin M. Leidel and Sidney L. Tassin to the Issuer's Board of Directors, Tortoise Sponsor II transferred 35,000 Class B Ordinary Shares to each of Juan J. Daboub, Karin M. Leidel and Sidney L. Tassin."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The Class B Ordinary Shares are convertible into the Issuer's Class A Ordinary Shares on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Tortoise Sponsor II LLC is the record holder of the shares reported herein. TortoiseEcofin Borrower LLC is the managing member of Tortoise Sponsor II LLC. TortoiseEcofin Parent Holdco LLC is the sole member of TortoiseEcofin Borrower LLC and TortoiseEcofin Invesments, LLC is the sole member of TortoiseEcofin Parent Holdco LLC. Accordingly, TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC may be deemed to have or share beneficial ownership of the Class B Ordinary Shares held directly by Tortoise Sponsor II LLC. The address of each of TortoiseEcofin Borrower LLC and TortoiseEcofin Investments, LLC is 5100 W. 115th Place, Leawood, Kansas 66211."}],"balance_after":8520000,"derivative":{"underlying":"Class A Ordinary Shares","underlying_shares":105000},"source":{"system":"sec-edgar","filing":"0001213900-20-026454","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390020026454/ownership.xml","form_type":"4"}},{"id":3538219,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":146166,"kind":"organization","name":"Tortoise Sponsor LLC","position":1,"cik":"0001768532","reported_name":"Tortoise Sponsor LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":2,"cik":"0001735321","reported_name":"Tortoise Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":3,"cik":"0001730884","reported_name":"Tortoise Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Class B Common Stock","published_at":"2019-05-06T16:42:36.000Z","date":"2019-03-07","kind":"other","acquired":false,"shares":643520,"ownership":{"direct":false,"nature":"See foot note"},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F1","text":"The shares of Class B Common Stock are convertible into shares of the Issuer's Class A Common Stock on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"kind","element":"transactionCoding","label":"F2","text":"The Class B Common Stock owned by Tortoise Sponsor LLC included up to 843,750 shares that were subject to forfeiture in the event the underwriters of the initial public offering of the Issuer's securities did not exercise in full their over-allotment option as described in the Issuer's Registration Statement on Form S-1 (File No. 333-229537). Because the underwriters exercised their over-allotment option in part, Tortoise Sponsor LLC forfeited 643,520 shares of Class B Common Stock on March 7, 2019 for cancellation by the Issuer."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The Class B Common Stock owned by Tortoise Sponsor LLC included up to 843,750 shares that were subject to forfeiture in the event the underwriters of the initial public offering of the Issuer's securities did not exercise in full their over-allotment option as described in the Issuer's Registration Statement on Form S-1 (File No. 333-229537). Because the underwriters exercised their over-allotment option in part, Tortoise Sponsor LLC forfeited 643,520 shares of Class B Common Stock on March 7, 2019 for cancellation by the Issuer."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The shares of Class B Common Stock are convertible into shares of the Issuer's Class A Common Stock on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The shares of Class B Common Stock are convertible into shares of the Issuer's Class A Common Stock on a one-for-one basis, subject to adjustment pursuant to certain anti-dilution rights, and have no expiration date."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F3","text":"Tortoise Sponsor LLC is the record holder of the shares reported herein. Tortoise Borrower LLC is the managing member of Tortoise Sponsor LLC. Tortoise Parent Holdco LLC is the sole member of Tortoise Borrower LLC, and Tortoise Investments, LLC is the sole member of Tortoise Parent Holdco LLC. Accordingly, Tortoise Borrower LLC and Tortoise Investments, LLC may be deemed to have or share beneficial ownership of the shares of Class B Common Stock held directly by Tortoise Sponsor LLC. The address of each of Tortoise Borrower LLC and Tortoise Investments, LLC is 11550 Ash Street, Suite 300, Leawood, Kansas 66211."}],"balance_after":4439605,"derivative":{"underlying":"Class A Common Stock","underlying_shares":643520},"source":{"system":"sec-edgar","filing":"0001213900-19-007882","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390019007882/ownership.xml","form_type":"4"}},{"id":3608637,"issuer":{"id":5333,"kind":"organization","name":"Hyliion Holdings Corp.","symbol":"HYLN"},"owners":[{"id":135926,"kind":"organization","name":"TortoiseEcofin Borrower LLC","position":1,"cik":"0001735321","reported_name":"Tortoise Borrower LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":135927,"kind":"organization","name":"TortoiseEcofin Investments, LLC","position":2,"cik":"0001730884","reported_name":"Tortoise Investments, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Private Placement Warrants","published_at":"2019-03-06T16:56:16.000Z","date":"2019-03-04","kind":"purchase","acquired":true,"shares":6660183,"price":1,"value":6660183.0,"ownership":{"direct":false,"nature":"See Footnote"},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The warrants will become exercisable on the later of (i) 30 days after the completion of the Issuer's initial business combination, and (ii) 12 months from the closing of the Issuer's initial public offering, and will expire upon the earlier of (a) five years after the completion of the Issuer's initial business combination, or (b) upon the liquidation of the Issuer."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F1","text":"The warrants will become exercisable on the later of (i) 30 days after the completion of the Issuer's initial business combination, and (ii) 12 months from the closing of the Issuer's initial public offering, and will expire upon the earlier of (a) five years after the completion of the Issuer's initial business combination, or (b) upon the liquidation of the Issuer."},{"field":"ownership.nature","element":"natureOfOwnership","label":"F2","text":"Tortoise Borrower LLC is the record holder of the warrants. Tortoise Parent Holdco LLC is the sole member of Tortoise Borrower LLC, and Tortoise Investments, LLC is the sole member of Tortoise Parent Holdco LLC. Accordingly, Tortoise Investments, LLC may be deemed to have or share beneficial ownership of the warrants held directly by Tortoise Borrower LLC. The address of Tortoise Investments, LLC is 11550 Ash Street, Suite 300, Leawood, Kansas 66211."}],"balance_after":6660183,"derivative":{"exercise_price":11.5,"underlying":"Class A Common Stock","underlying_shares":6660183},"source":{"system":"sec-edgar","filing":"0001213900-19-003666","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1735321/000121390019003666/ownership.xml","form_type":"4"}}]}