{"transactions":[{"id":2372581,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-02-26T00:15:26.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":12448,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The options vest as to one-third of the shares on February 23, 2023, and additional one-third of the shares on February 23, 2024 and the remaining one-third of the shares on February 23, 2025."}],"balance_after":12448,"derivative":{"exercise_price":26.29,"expiration_date":"2032-02-23","underlying":"Common Stock","underlying_shares":12448},"source":{"system":"sec-edgar","filing":"0001209191-22-013378","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013378/doc4.xml","form_type":"4"}},{"id":2372580,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2022-02-26T00:15:26.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":276,"price":29,"value":8004.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 76,077 shares of Common Stock and 19,304 RSUs."}],"balance_after":95381,"source":{"system":"sec-edgar","filing":"0001209191-22-013378","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013378/doc4.xml","form_type":"4"}},{"id":2372579,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2022-02-26T00:15:26.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":2377,"price":26.29,"value":62491.33,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents the right to receive one share of Common Stock upon vesting.  The RSUs vest as to one-third of the shares on February 23, 2023, an additional one-third of the shares on February 23, 2024 and the remaining one-third of the shares on February 23, 2025."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 75,559 shares of Common Stock and 20,098 RSUs."}],"balance_after":95657,"source":{"system":"sec-edgar","filing":"0001209191-22-013378","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013378/doc4.xml","form_type":"4"}},{"id":2821187,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2021-03-02T21:34:38.000Z","date":"2021-02-28","kind":"tax_withholding","acquired":false,"shares":2127,"price":22.25,"value":47325.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 75,559 shares of Common Stock and 17,721 Restricted Stock Units."}],"balance_after":93280,"source":{"system":"sec-edgar","filing":"0001209191-21-016014","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016014/doc4.xml","form_type":"4"}},{"id":2821186,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2021-03-02T21:34:38.000Z","date":"2021-02-27","kind":"tax_withholding","acquired":false,"shares":3187,"price":22.25,"value":70910.75,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 70,439 shares of Common Stock and 24,968 Restricted Stock Units."}],"balance_after":95407,"source":{"system":"sec-edgar","filing":"0001209191-21-016014","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016014/doc4.xml","form_type":"4"}},{"id":2821185,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2021-03-02T21:34:38.000Z","date":"2021-02-26","kind":"tax_withholding","acquired":false,"shares":829,"price":22.25,"value":18445.25,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 63,066 shares of Common Stock and 35,528 Restricted Stock Units."}],"balance_after":98594,"source":{"system":"sec-edgar","filing":"0001209191-21-016014","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016014/doc4.xml","form_type":"4"}},{"id":2830138,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-02-26T22:18:44.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":13106,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest as to one-third of the shares on February 24, 2022, an additional one-third of the shares on February 24, 2023 and the remaining one-third of the shares on February 24, 2024."}],"balance_after":13106,"derivative":{"exercise_price":24.13,"expiration_date":"2031-02-24","underlying":"Common Stock","underlying_shares":13106},"source":{"system":"sec-edgar","filing":"0001209191-21-014880","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121014880/doc4.xml","form_type":"4"}},{"id":2830137,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2021-02-26T22:18:44.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":2382,"price":24.13,"value":57477.66,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents the right to receive one share of Common Stock upon vesting.  The RSUs vest as to one-third of the shares on February 24, 2022, an additional one-third of the shares on February 24, 2023 and the remaining one-third of the shares on February 24, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 61,505 shares of Common Stock and 37,918 Restricted Stock Units."}],"balance_after":99423,"source":{"system":"sec-edgar","filing":"0001209191-21-014880","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121014880/doc4.xml","form_type":"4"}},{"id":2942943,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-12-16T22:48:57.000Z","date":"2020-12-15","kind":"grant","acquired":true,"shares":5853,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The options vest as to one-third of the shares on December 15, 2021, an additional one-third of the shares on December 15, 2022 and the remaining one-third of the shares on December 15, 2023."}],"balance_after":5853,"derivative":{"exercise_price":16.05,"expiration_date":"2030-12-15","underlying":"Common Stock","underlying_shares":5853},"source":{"system":"sec-edgar","filing":"0001209191-20-063856","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120063856/doc4.xml","form_type":"4"}},{"id":3238631,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2020-03-02T21:31:03.000Z","date":"2020-02-28","kind":"tax_withholding","acquired":false,"shares":4421,"price":7.95,"value":35146.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units (\"RSU\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 61,505 shares of Common Stock and 35,536 RSUs."}],"balance_after":97041,"source":{"system":"sec-edgar","filing":"0001209191-20-014475","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120014475/doc4.xml","form_type":"4"}},{"id":3238630,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2020-03-02T21:31:03.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":3655,"price":7.92,"value":28947.6,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units (\"RSU\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 50,628 shares of Common Stock and 50,834 shares of RSUs."}],"balance_after":101462,"source":{"system":"sec-edgar","filing":"0001209191-20-014475","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120014475/doc4.xml","form_type":"4"}},{"id":3241553,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Options (right to Buy)","published_at":"2020-02-28T22:00:54.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":44067,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest as to one-third of the shares on February 26, 2021, an additional one-third of the shares on February 26, 2022 and the remaining one-third of the shares on February 26, 2023."}],"balance_after":44067,"derivative":{"exercise_price":8.02,"expiration_date":"2030-02-26","underlying":"Common Stock","underlying_shares":44067},"source":{"system":"sec-edgar","filing":"0001209191-20-013977","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013977/doc4.xml","form_type":"4"}},{"id":3241552,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2020-02-28T22:00:54.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":7169,"price":8.02,"value":57495.38,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each Restricted Stock Unit (\"RSU\") represents the right to receive one share of common stock upon vesting.  The RSUs vest as to one-third of the shares on February 26, 2021, an additional one-third of the shares on February 26, 2022 and the remaining one-third of the shares on February 26, 2023."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 43,723 shares of Common Stock and 61,394 shares of Restricted Stock Units."}],"balance_after":105117,"source":{"system":"sec-edgar","filing":"0001209191-20-013977","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013977/doc4.xml","form_type":"4"}},{"id":3619672,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2019-03-04T21:21:02.000Z","date":"2019-03-01","kind":"tax_withholding","acquired":false,"shares":2175,"price":3.52,"value":7656.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 43,723 shares of Common Stock and 54,225 Restricted Stock Units."}],"balance_after":97948,"source":{"system":"sec-edgar","filing":"0001209191-19-015595","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015595/doc4.xml","form_type":"4"}},{"id":3619671,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2019-03-04T21:21:02.000Z","date":"2019-02-28","kind":"tax_withholding","acquired":false,"shares":5309,"price":3.46,"value":18369.14,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 39,632 shares of Common Stock and 60,491 Restricted Stock Units."}],"balance_after":100123,"source":{"system":"sec-edgar","filing":"0001209191-19-015595","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015595/doc4.xml","form_type":"4"}},{"id":3623499,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Stock Options (Right to Buy)","published_at":"2019-03-02T00:44:47.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":63773,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest as to one-third of the shares on February 27, 2020, an additional one-third of the shares on February 27, 2021 and the remaining one-third of the shares on February 27, 2022."}],"balance_after":63773,"derivative":{"exercise_price":3.63,"expiration_date":"2029-02-27","underlying":"Common Stock","underlying_shares":63773},"source":{"system":"sec-edgar","filing":"0001209191-19-015228","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015228/doc4.xml","form_type":"4"}},{"id":3623498,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2019-03-02T00:44:47.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":31680,"price":3.63,"value":114998.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit (\"RSU\") represents the right to receive one share of common stock upon vesting.  The RSUs vest as to one-third of the shares on February 27, 2020, an additional one-third of the shares on February 27, 2021 and the remaining one-third of the shares on February 27, 2022."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 29,644 shares of Common Stock and 75,788 Restricted Stock Units."}],"balance_after":105432,"source":{"system":"sec-edgar","filing":"0001209191-19-015228","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015228/doc4.xml","form_type":"4"}},{"id":3819754,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Technology Officer"}}],"security":"Common Stock","published_at":"2018-09-11T21:43:25.000Z","date":"2018-09-10","kind":"tax_withholding","acquired":false,"shares":1146,"price":4.84,"value":5546.64,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 29,644 shares of Common Stock and 44,108 restricted stock units."}],"balance_after":73752,"source":{"system":"sec-edgar","filing":"0001209191-18-050545","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118050545/doc4.xml","form_type":"4"}},{"id":3996573,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2018-03-14T14:22:09.000Z","date":"2018-03-11","kind":"tax_withholding","acquired":false,"shares":844,"price":4.59,"value":3873.96,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 26,901 shares of common stock and 47,997 restricted stock units."}],"balance_after":74898,"source":{"system":"sec-edgar","filing":"0001209191-18-019490","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118019490/doc4.xml","form_type":"4"}},{"id":4020509,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Stock Options (Right to Buy)","published_at":"2018-03-02T23:31:56.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":44881,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"The options vest as to one-third of the shares on February 28, 2019, an additional one-third of the shares on February 28, 2020, and the remaining one-third of the shares on February 28, 2021."}],"balance_after":44881,"derivative":{"exercise_price":4.6,"expiration_date":"2028-02-28","underlying":"Common Stock","underlying_shares":44881},"source":{"system":"sec-edgar","filing":"0001209191-18-015985","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015985/doc4.xml","form_type":"4"}},{"id":4020508,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2018-03-02T23:31:56.000Z","date":"2018-03-01","kind":"tax_withholding","acquired":false,"shares":2178,"price":4.57,"value":9953.46,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Represents 24,871 shares of common stock and 50,871 restricted stock units."}],"balance_after":75742,"source":{"system":"sec-edgar","filing":"0001209191-18-015985","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015985/doc4.xml","form_type":"4"}},{"id":4020507,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2018-03-02T23:31:56.000Z","date":"2018-02-28","kind":"tax_withholding","acquired":false,"shares":2798,"price":4.6,"value":12870.8,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 20,784 shares of common stock and 57,136 restricted stock units."}],"balance_after":77920,"source":{"system":"sec-edgar","filing":"0001209191-18-015985","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015985/doc4.xml","form_type":"4"}},{"id":4020506,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2018-03-02T23:31:56.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":21739,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit (\"RSU\") represents the right to receive one share of common stock upon vesting. The RSUs vest as to one-third of the shares on February 28, 2019, an additional one-third of the shares on February 28, 2020, and the remaining one-third of the shares on February 28, 2021."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 15,531 shares of common stock and 65,187 restricted stock units."}],"balance_after":80718,"source":{"system":"sec-edgar","filing":"0001209191-18-015985","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015985/doc4.xml","form_type":"4"}},{"id":4211829,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2017-09-12T20:34:46.000Z","date":"2017-09-10","kind":"tax_withholding","acquired":false,"shares":1262,"price":4.18,"value":5275.16,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 15,531 shares of common stock and 43,448 restricted stock units."}],"balance_after":58979,"source":{"system":"sec-edgar","filing":"0001209191-17-052434","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117052434/doc4.xml","form_type":"4"}},{"id":4388987,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2017-03-14T00:14:07.000Z","date":"2017-03-11","kind":"tax_withholding","acquired":false,"shares":1085,"price":4.07,"value":4415.95,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 12,904 shares of common stock and 47,337 restricted stock units."}],"balance_after":60241,"source":{"system":"sec-edgar","filing":"0001209191-17-020358","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117020358/doc4.xml","form_type":"4"}},{"id":4410082,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Stock Options (right to buy)","published_at":"2017-03-03T00:42:33.000Z","date":"2017-02-28","kind":"grant","acquired":true,"shares":47492,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The options vest as to one-third of the shares on February 28, 2018, an additional one-third of the shares on February 28, 2019, and the remaining one-third of the shares on February 28, 2020."}],"balance_after":47492,"derivative":{"exercise_price":4.14,"expiration_date":"2027-02-28","underlying":"Common Stock","underlying_shares":47492},"source":{"system":"sec-edgar","filing":"0001209191-17-016987","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117016987/doc4.xml","form_type":"4"}},{"id":4410081,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2017-03-03T00:42:33.000Z","date":"2017-03-01","kind":"tax_withholding","acquired":false,"shares":2366,"price":4.18,"value":9889.88,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 11,116 shares of Common Stock and 50,210 RSUs"}],"balance_after":61326,"source":{"system":"sec-edgar","filing":"0001209191-17-016987","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117016987/doc4.xml","form_type":"4"}},{"id":4410080,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2017-03-03T00:42:33.000Z","date":"2017-02-28","kind":"grant","acquired":true,"shares":24154,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Each restricted stock unit (\"RSU\") represents the right to receive one share of common stock upon vesting. The RSUs vest as to one-third of the shares on February 28, 2018, an additional one-third of the shares on February 28, 2019, and the remaining one-third of the shares on February 28, 2020."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 7,217 shares of Common Stock and 56,475 RSUs"}],"balance_after":63692,"source":{"system":"sec-edgar","filing":"0001209191-17-016987","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117016987/doc4.xml","form_type":"4"}},{"id":4604462,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":129965,"kind":"person","name":"Gould George L","position":1,"cik":"0001610260","reported_name":"Gould George L","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"VP, Research and Development"}}],"security":"Common Stock","published_at":"2016-09-14T00:07:46.000Z","date":"2016-09-10","kind":"tax_withholding","acquired":false,"shares":1262,"price":4.7,"value":5931.4,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units(\"RSUs\")"},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 7,217 shares of Common Stock and 32,321 RSUs."}],"balance_after":39538,"source":{"system":"sec-edgar","filing":"0001209191-16-141310","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919116141310/doc4.xml","form_type":"4"}}]}