{"transactions":[{"id":851656,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"Chief Commercial Officer"}}],"security":"Common Stock","published_at":"2026-03-10T21:00:13.000Z","date":"2026-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":1924,"price":3.22,"value":6195.28,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"1. Shares withheld by Registrant to satisfy minimum statutory tax withholding requirements on vesting of Restricted Stock Units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 128,170 shares of Common Stock and 77,145 RSUs."}],"balance_after":205315,"source":{"system":"sec-edgar","filing":"0001193125-26-100345","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526100345/ownership.xml","form_type":"4"}},{"id":856492,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-06T22:00:11.000Z","date":"2026-03-04","kind":"grant","planned":false,"acquired":true,"shares":77824,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The options vest as to one-third of the shares on March 4, 2027, an additional one-third of the shares on March 4, 2028 and the remaining one-third of the shares on March 4, 2029."}],"balance_after":77824,"derivative":{"exercise_price":3.35,"expiration_date":"2036-03-04","underlying":"Common Stock","underlying_shares":77824},"source":{"system":"sec-edgar","filing":"0001193125-26-096820","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526096820/ownership.xml","form_type":"4"}},{"id":856491,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2026-03-06T22:00:11.000Z","date":"2026-03-05","kind":"tax_withholding","planned":false,"acquired":false,"shares":3907,"price":3.27,"value":12775.89,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 124,588 shares of Common Stock and 82,651 RSUs."}],"balance_after":207239,"source":{"system":"sec-edgar","filing":"0001193125-26-096820","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526096820/ownership.xml","form_type":"4"}},{"id":856490,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2026-03-06T22:00:11.000Z","date":"2026-03-04","kind":"grant","planned":false,"acquired":true,"shares":57462,"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 March 4, 2027, an additional one-third of the shares on March 4, 2028 and the remaining one-third of the shares on March 4, 2029."}],"balance_after":211146,"source":{"system":"sec-edgar","filing":"0001193125-26-096820","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526096820/ownership.xml","form_type":"4"}},{"id":1212942,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2025-03-11T22:49:47.000Z","date":"2025-03-07","kind":"tax_withholding","planned":false,"acquired":false,"shares":1924,"price":7.95,"value":15295.8,"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 (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 117,313 shares of Common Stock and 36,371 RSUs."}],"balance_after":153684,"source":{"system":"sec-edgar","filing":"0000950170-25-037447","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025037447/ownership.xml","form_type":"4"}},{"id":1217931,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Performance Share Units","published_at":"2025-03-07T21:46:30.000Z","date":"2025-03-05","kind":"grant","planned":false,"acquired":true,"shares":51020,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_price","element":"conversionOrExercisePrice","label":"F5","text":"Each performance share unit (\"PSU\") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"Each performance share unit (\"PSU\") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index."},{"field":"derivative.expiration_date","element":"expirationDate","label":"F5","text":"Each performance share unit (\"PSU\") represents a contingent right to receive one share of Common Stock upon vesting. The PSUs vest on March 5, 2028, following the completion of the performance period, which begins on January 1, 2025 and ends on December 31, 2027. Ranging between 0-200% of the target number of PSUs (as reflected in Table II above), the PSUs vest based on the total shareholder return of Common Stock relative to the total stockholder return of the components of the Russell 2000 Index."}],"balance_after":51020,"derivative":{"exercise_date":"2028-03-05","underlying":"Common Stock","underlying_shares":51020},"source":{"system":"sec-edgar","filing":"0000950170-25-035591","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035591/ownership.xml","form_type":"4"}},{"id":1217930,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-03-07T21:46:30.000Z","date":"2025-03-05","kind":"grant","planned":false,"acquired":true,"shares":35961,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"The options vest as to one-third of the shares on March 5, 2026, an additional one-third of the shares on March 5, 2027 and the remaining one-third of the shares on March 5, 2028."}],"balance_after":35961,"derivative":{"exercise_price":7.84,"expiration_date":"2035-03-05","underlying":"Common Stock","underlying_shares":35961},"source":{"system":"sec-edgar","filing":"0000950170-25-035591","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035591/ownership.xml","form_type":"4"}},{"id":1217929,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2025-03-07T21:46:30.000Z","date":"2025-03-05","kind":"grant","planned":false,"acquired":true,"shares":25510,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F2","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 March 5, 2026, an additional one-third of the shares on March 5, 2027 and the remaining one-third of the shares on March 5, 2028."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 113,730 shares of Common Stock and 41,878 RSUs."}],"balance_after":155608,"source":{"system":"sec-edgar","filing":"0000950170-25-035591","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035591/ownership.xml","form_type":"4"}},{"id":1217928,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2025-03-07T21:46:30.000Z","date":"2025-03-05","kind":"tax_withholding","planned":false,"acquired":false,"shares":936,"price":7.84,"value":7338.24,"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 (\"RSUs\")."}],"balance_after":130098,"source":{"system":"sec-edgar","filing":"0000950170-25-035591","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035591/ownership.xml","form_type":"4"}},{"id":1247054,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2025-02-26T01:50:51.000Z","date":"2025-02-21","kind":"tax_withholding","planned":false,"acquired":false,"shares":499,"price":8.04,"value":4011.96,"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 Restricted Stock Units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 111,989 shares of Common Stock and 19,045 RSUs."}],"balance_after":131034,"source":{"system":"sec-edgar","filing":"0000950170-25-027197","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025027197/ownership.xml","form_type":"4"}},{"id":1523553,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-05-08T12:51:14.000Z","date":"2024-05-06","kind":"exercise","planned":false,"acquired":false,"shares":55159,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"This option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":3.63,"expiration_date":"2029-02-27","underlying":"Common Stock","underlying_shares":55159},"source":{"system":"sec-edgar","filing":"0000950170-24-055109","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024055109/ownership.xml","form_type":"4"}},{"id":1523552,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-05-08T12:51:14.000Z","date":"2024-05-06","kind":"sale","planned":false,"acquired":false,"shares":55159,"price":25.01,"value":1379526.59,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"These transactions were executed in multiple trades at prices ranging from $24.75 to $25.24. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 111,062 shares of Common Stock and 20,471 Restricted Stock Units."}],"balance_after":131533,"source":{"system":"sec-edgar","filing":"0000950170-24-055109","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024055109/ownership.xml","form_type":"4"}},{"id":1523551,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-05-08T12:51:14.000Z","date":"2024-05-06","kind":"exercise","planned":false,"acquired":true,"shares":55159,"price":3.63,"value":200227.17,"ownership":{"direct":true},"balance_after":186692,"source":{"system":"sec-edgar","filing":"0000950170-24-055109","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024055109/ownership.xml","form_type":"4"}},{"id":1584698,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-03-11T20:02:59.000Z","date":"2024-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":1768,"price":17.02,"value":30091.36,"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 (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 111,062 shares of Common Stock and 20,471RSUs."}],"balance_after":131533,"source":{"system":"sec-edgar","filing":"0000950170-24-029212","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024029212/ownership.xml","form_type":"4"}},{"id":1589581,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-03-07T21:55:11.000Z","date":"2024-03-05","kind":"grant","planned":false,"acquired":false,"shares":35249,"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 March 5, 2025, an additional one-third of the shares on March 5, 2026 and the remaining one-third of the shares on March 5, 2027."}],"balance_after":35249,"derivative":{"exercise_price":16.34,"expiration_date":"2024-03-05","underlying":"Common Stock","underlying_shares":35249},"source":{"system":"sec-edgar","filing":"0000950170-24-028116","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024028116/ownership.xml","form_type":"4"}},{"id":1589580,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-03-07T21:55:11.000Z","date":"2024-03-05","kind":"grant","planned":false,"acquired":true,"shares":8032,"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 March 5, 2025, an additional one-third of the shares on March 5, 2026 and the remaining one-third of the shares on March 5, 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 107,324 shares of Common Stock and 25,977 RSUs."}],"balance_after":133301,"source":{"system":"sec-edgar","filing":"0000950170-24-028116","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024028116/ownership.xml","form_type":"4"}},{"id":1589568,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-03-07T21:27:06.000Z","date":"2024-03-05","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":53590,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Represents unearned performance-based restricted shares granted on June 2, 2022 that were cancelled on March 5, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 107,324 shares of Common Stock and 17,945 RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"This includes an additional 16,519 shares, representing RSUs granted on June 1, 2023, the grant of which was reported in a Form 4 filed on June 2, 2023, which were indadvertantly omitted from the reporting person's total holdings in his prior Form 4."}],"balance_after":125269,"source":{"system":"sec-edgar","filing":"0000950170-24-028010","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024028010/ownership.xml","form_type":"4"}},{"id":1616473,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-02-27T18:36:21.000Z","date":"2024-02-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":330,"price":16.96,"value":5596.8,"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 (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 107,274 shares of Common Stock, 1,426 RSUs and 53,590 shares of Restricted Stock."}],"balance_after":162290,"source":{"system":"sec-edgar","filing":"0000950170-24-020884","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024020884/ownership.xml","form_type":"4"}},{"id":1616472,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2024-02-27T18:36:21.000Z","date":"2024-02-23","kind":"tax_withholding","planned":false,"acquired":false,"shares":495,"price":16.96,"value":8395.2,"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 (\"RSUs\")."}],"balance_after":162620,"source":{"system":"sec-edgar","filing":"0000950170-24-020884","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024020884/ownership.xml","form_type":"4"}},{"id":1784943,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right-to-Buy)","published_at":"2023-09-08T21:40:11.000Z","date":"2023-09-07","kind":"grant","planned":false,"acquired":true,"shares":85000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F1","text":"The options will vest in full on September 7, 2026, subject to continuous service through such date."}],"balance_after":85000,"derivative":{"exercise_price":6.51,"expiration_date":"2033-09-07","underlying":"Common Stock","underlying_shares":85000},"source":{"system":"sec-edgar","filing":"0001209191-23-048826","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123048826/doc4.xml","form_type":"4"}},{"id":1870450,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2023-06-02T20:08:19.000Z","date":"2023-06-01","kind":"grant","planned":false,"acquired":true,"shares":75979,"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 March 8, 2024, an additional one-third of the shares on March 8, 2025 and the remaining one-third\nof the shares on March 8, 2026."}],"balance_after":75979,"derivative":{"exercise_price":6.81,"expiration_date":"2033-06-01","underlying":"Common Stock","underlying_shares":75979},"source":{"system":"sec-edgar","filing":"0001209191-23-033671","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123033671/doc4.xml","form_type":"4"}},{"id":1870449,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2023-06-02T20:08:19.000Z","date":"2023-06-01","kind":"grant","planned":false,"acquired":true,"shares":16519,"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 March 8, 2024, an additional one-third of the shares on March 8, 2025 and the remaining one-third of the shares on March 8, 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 105,772 shares of Common Stock, 20,322 RSUs and 53,590 shares of Restricted Stock."}],"balance_after":179684,"source":{"system":"sec-edgar","filing":"0001209191-23-033671","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123033671/doc4.xml","form_type":"4"}},{"id":1987628,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2023-02-28T22:13:42.000Z","date":"2023-02-26","kind":"tax_withholding","acquired":false,"shares":901,"price":10.95,"value":9865.95,"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 (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 105,772 shares of Common Stock, 3,803 RSUs and 53,590 shares of Restricted Stock."}],"balance_after":163165,"source":{"system":"sec-edgar","filing":"0001209191-23-013773","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123013773/doc4.xml","form_type":"4"}},{"id":1987627,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2023-02-28T22:13:42.000Z","date":"2023-02-24","kind":"tax_withholding","acquired":false,"shares":329,"price":10.95,"value":3602.55,"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 (\"RSUs\")."}],"balance_after":164066,"source":{"system":"sec-edgar","filing":"0001209191-23-013773","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123013773/doc4.xml","form_type":"4"}},{"id":1990836,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2023-02-27T23:14:55.000Z","date":"2023-02-23","kind":"tax_withholding","acquired":false,"shares":495,"price":11.32,"value":5603.4,"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 Restricted Stock Units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 103,455 shares of Common Stock, 7,350 RSUs and 53,590 shares of Restricted Stock."}],"balance_after":164395,"source":{"system":"sec-edgar","filing":"0001209191-23-013363","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123013363/doc4.xml","form_type":"4"}},{"id":2242732,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2022-06-06T23:35:46.000Z","date":"2022-06-02","kind":"grant","acquired":true,"shares":53590,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person was granted restricted shares of common stock (the \"Award\") pursuant to a Performance-Based Restricted Stock\nAgreement by and between Aspen Aerogels, Inc. and the reporting person subject to the 2014 Employee, Director and Consultant Equity\nIncentive Plan. In order for a tranche of this Award to vest, both time and performance vesting conditions must be satisfied. For the time vesting\ncondition, a tranche will vest at the later of (i) three years from the grant date or (ii) one year from the date when an applicable performance\nhurdle is achieved, subject to a maximum five-year vesting period for shares with respect to which the performance hurdle has been achieved.\nWith respect to the performance vesting condition, there are three tranches with different share price hurdles and a five-year total performance\nperiod. If a share price hurdle is not met after five years, the applicable tranche is forfeited."},{"field":"shares","element":"transactionShares","label":"F2","text":"(cont.) The share price hurdle is met by reference to a 30-day volume weighted average price (VWAP) that is maintained for 60 days (the \"Share Price Hurdle\"). The first tranche consists of 34% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $43.33.The second tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $64.99. The third tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $86.65."},{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The reporting person was granted restricted shares of common stock (the \"Award\") pursuant to a Performance-Based Restricted Stock\nAgreement by and between Aspen Aerogels, Inc. and the reporting person subject to the 2014 Employee, Director and Consultant Equity\nIncentive Plan. In order for a tranche of this Award to vest, both time and performance vesting conditions must be satisfied. For the time vesting\ncondition, a tranche will vest at the later of (i) three years from the grant date or (ii) one year from the date when an applicable performance\nhurdle is achieved, subject to a maximum five-year vesting period for shares with respect to which the performance hurdle has been achieved.\nWith respect to the performance vesting condition, there are three tranches with different share price hurdles and a five-year total performance\nperiod. If a share price hurdle is not met after five years, the applicable tranche is forfeited."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"(cont.) The share price hurdle is met by reference to a 30-day volume weighted average price (VWAP) that is maintained for 60 days (the \"Share Price Hurdle\"). The first tranche consists of 34% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $43.33.The second tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $64.99. The third tranche consists of 33% of the restricted shares of common stock granted under the Award, with the Share Price Hurdle equal to $86.65."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 102,524 shares of Common Stock, 8776 Restricted Stock Units and 53,590 shares of Restricted Stock."}],"balance_after":164890,"source":{"system":"sec-edgar","filing":"0001209191-22-034714","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122034714/doc4.xml","form_type":"4"}},{"id":2365992,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2022-03-02T00:57:20.000Z","date":"2022-02-27","kind":"tax_withholding","acquired":false,"shares":3159,"price":29.51,"value":93222.09,"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(\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 102,524 shares of common stock and 8,776 RSUs."}],"balance_after":111300,"source":{"system":"sec-edgar","filing":"0001209191-22-014402","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122014402/doc4.xml","form_type":"4"}},{"id":2372578,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-02-26T00:14:00.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":22408,"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 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":22408,"derivative":{"exercise_price":26.29,"expiration_date":"2032-02-23","underlying":"Common Stock","underlying_shares":22408},"source":{"system":"sec-edgar","filing":"0001209191-22-013376","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013376/doc4.xml","form_type":"4"}},{"id":2372577,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2022-02-26T00:14:00.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":4279,"price":26.29,"value":112494.91,"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 91,346 shares of Common Stock and 23,113 RSUs."}],"balance_after":114459,"source":{"system":"sec-edgar","filing":"0001209191-22-013376","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013376/doc4.xml","form_type":"4"}},{"id":2518147,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-09","kind":"exercise","acquired":false,"shares":10000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"These options are fully vested and exercisable."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F9","text":"Represents fully vested and exercisable option to purchase 33,439 shares and option to purchase 21,720 shares which will vest on February 27, 2022."}],"balance_after":55159,"derivative":{"exercise_price":3.63,"expiration_date":"2029-02-27","underlying":"Common Stock","underlying_shares":10000},"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2518146,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-08","kind":"exercise","acquired":false,"shares":14735,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"These options are fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":4.6,"expiration_date":"2028-02-28","underlying":"Common Stock","underlying_shares":14735},"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2518145,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-09","kind":"sale","acquired":false,"shares":10000,"price":58.37,"value":583700.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F7","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the transactions reported was $58.10 to $58.88 per share. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Represents 91,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":110180,"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2518144,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-09","kind":"exercise","acquired":true,"shares":10000,"price":3.63,"value":36300.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"Represents 101,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":120180,"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2518143,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-08","kind":"sale","acquired":false,"shares":8118,"price":56.99,"value":462644.82,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F4","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the\ntransactions reported was $56.30 to $57.30 per share. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff\nof the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Represents 91,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":110180,"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2518142,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-08","kind":"sale","acquired":false,"shares":6617,"price":57.67,"value":381602.39,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"The price reflected is the weighted-average sale price for shares sold. The shares were sold in multiple transactions and the range of sale prices for the\ntransactions reported was $57.31 to $58.28 per share. The Reporting Person undertakes to provide to the issuer, any security holder of the issuer, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 99,464 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":118298,"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2518141,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-11-10T23:10:35.000Z","date":"2021-11-08","kind":"exercise","acquired":true,"shares":14735,"price":4.6,"value":67781.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 106,081 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":124915,"source":{"system":"sec-edgar","filing":"0001209191-21-063937","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121063937/doc4.xml","form_type":"4"}},{"id":2615462,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-08-04T20:27:14.000Z","date":"2021-08-03","kind":"exercise","acquired":false,"shares":8000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."}],"balance_after":14735,"derivative":{"exercise_price":4.6,"expiration_date":"2028-02-28","underlying":"Common Stock","underlying_shares":11657},"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2615461,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-08-04T20:27:14.000Z","date":"2021-08-02","kind":"exercise","acquired":false,"shares":30000,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."}],"balance_after":22735,"derivative":{"exercise_price":4.6,"expiration_date":"2028-02-28","underlying":"Common Stock","underlying_shares":30000},"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2615460,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to 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The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 91,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":110180,"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2615458,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-08-04T20:27:14.000Z","date":"2021-08-03","kind":"exercise","acquired":true,"shares":8000,"price":4.6,"value":36800.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F5","text":"Represents 99,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":118180,"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2615457,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-08-04T20:27:14.000Z","date":"2021-08-02","kind":"sale","acquired":false,"shares":34258,"price":36.27,"value":1242537.66,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Average price with actual price ranging from $35.7600 and $37.05.  The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 91,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":110180,"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2615456,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-08-04T20:27:14.000Z","date":"2021-08-02","kind":"exercise","acquired":true,"shares":30000,"price":4.6,"value":138000.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 125,604 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":144438,"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2615455,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-08-04T20:27:14.000Z","date":"2021-08-02","kind":"exercise","acquired":true,"shares":4258,"price":7.54,"value":32105.32,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 95,604 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":114438,"source":{"system":"sec-edgar","filing":"0001209191-21-049624","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121049624/doc4.xml","form_type":"4"}},{"id":2792406,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-03-12T21:20:11.000Z","date":"2021-03-11","kind":"exercise","acquired":false,"shares":14500,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This option is fully vested and exercisable."}],"balance_after":4258,"derivative":{"exercise_price":7.54,"expiration_date":"2025-03-11","underlying":"Common Stock","underlying_shares":14500},"source":{"system":"sec-edgar","filing":"0001209191-21-020155","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121020155/doc4.xml","form_type":"4"}},{"id":2792405,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-03-12T21:20:11.000Z","date":"2021-03-11","kind":"sale","acquired":false,"shares":14500,"price":22.65,"value":328425.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Average price with actual price ranging from $22.25 and $22.865.  The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 91,346 shares of Common Stock and 18,834 Restricted Stock Units."}],"balance_after":110180,"source":{"system":"sec-edgar","filing":"0001209191-21-020155","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121020155/doc4.xml","form_type":"4"}},{"id":2792404,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby 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Units."}],"balance_after":110180,"source":{"system":"sec-edgar","filing":"0001209191-21-016049","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016049/doc4.xml","form_type":"4"}},{"id":2821189,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-03-02T21:38:14.000Z","date":"2021-02-27","kind":"tax_withholding","acquired":false,"shares":3219,"price":22.25,"value":71622.75,"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 85,331 shares of Common Stock and 27,349 Restricted Stock Units."}],"balance_after":112680,"source":{"system":"sec-edgar","filing":"0001209191-21-016049","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016049/doc4.xml","form_type":"4"}},{"id":2821188,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-03-02T21:38:14.000Z","date":"2021-02-26","kind":"tax_withholding","acquired":false,"shares":901,"price":22.25,"value":20047.25,"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 77,761 shares of Common Stock and 38,138 Restricted Stock Units."}],"balance_after":115899,"source":{"system":"sec-edgar","filing":"0001209191-21-016049","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016049/doc4.xml","form_type":"4"}},{"id":2830142,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-02-26T22:22:06.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":15671,"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":15671,"derivative":{"exercise_price":24.13,"expiration_date":"2031-02-24","underlying":"Common Stock","underlying_shares":15671},"source":{"system":"sec-edgar","filing":"0001209191-21-014893","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121014893/doc4.xml","form_type":"4"}},{"id":2830141,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2021-02-26T22:22:06.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":2849,"price":24.13,"value":68746.37,"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 76,064 shares of Common Stock and 40,736 Restricted Stock Units."}],"balance_after":116800,"source":{"system":"sec-edgar","filing":"0001209191-21-014893","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121014893/doc4.xml","form_type":"4"}},{"id":2942945,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2020-12-16T22:52:02.000Z","date":"2020-12-15","kind":"grant","acquired":true,"shares":9965,"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":9965,"derivative":{"exercise_price":16.05,"expiration_date":"2030-12-15","underlying":"Common Stock","underlying_shares":9965},"source":{"system":"sec-edgar","filing":"0001209191-20-063860","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120063860/doc4.xml","form_type":"4"}},{"id":2965315,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right-to Buy)","published_at":"2020-11-27T21:34:56.000Z","date":"2020-11-25","kind":"exercise","acquired":false,"shares":7667,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"This option is fully vested and exercisable."}],"balance_after":18758,"derivative":{"exercise_price":7.54,"expiration_date":"2025-03-11","underlying":"Common Stock","underlying_shares":7667},"source":{"system":"sec-edgar","filing":"0001209191-20-060645","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120060645/doc4.xml","form_type":"4"}},{"id":2965314,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-27T21:34:56.000Z","date":"2020-11-25","kind":"exercise","acquired":false,"shares":66154,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F6","text":"This option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":10.78,"expiration_date":"2024-09-10","underlying":"Common Stock","underlying_shares":66154},"source":{"system":"sec-edgar","filing":"0001209191-20-060645","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120060645/doc4.xml","form_type":"4"}},{"id":2965313,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-27T21:34:56.000Z","date":"2020-11-25","kind":"sale","acquired":false,"shares":7667,"price":14.42,"value":110558.14,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Average price with actual price ranging from $14.35 and $14.53. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-060645","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120060645/doc4.xml","form_type":"4"}},{"id":2965312,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-27T21:34:56.000Z","date":"2020-11-25","kind":"exercise","acquired":true,"shares":7667,"price":7.54,"value":57809.18,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 83,731 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":121618,"source":{"system":"sec-edgar","filing":"0001209191-20-060645","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120060645/doc4.xml","form_type":"4"}},{"id":2965311,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-27T21:34:56.000Z","date":"2020-11-25","kind":"sale","acquired":false,"shares":66154,"price":14.45,"value":955925.3,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Average price with actual price ranging from $14.27 and $14.82. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-060645","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120060645/doc4.xml","form_type":"4"}},{"id":2965310,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-27T21:34:56.000Z","date":"2020-11-25","kind":"exercise","acquired":true,"shares":66154,"price":10.78,"value":713140.12,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 142,218 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":180105,"source":{"system":"sec-edgar","filing":"0001209191-20-060645","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120060645/doc4.xml","form_type":"4"}},{"id":2971537,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-20T21:34:13.000Z","date":"2020-11-18","kind":"exercise","acquired":false,"shares":18670,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":4.14,"expiration_date":"2027-02-28","underlying":"Common Stock","underlying_shares":18670},"source":{"system":"sec-edgar","filing":"0001209191-20-059665","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059665/doc4.xml","form_type":"4"}},{"id":2971536,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-20T21:34:13.000Z","date":"2020-11-18","kind":"sale","acquired":false,"shares":18670,"price":12.21,"value":227960.7,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Average price with actual price ranging from $11.60 and $12.41. The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-059665","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059665/doc4.xml","form_type":"4"}},{"id":2971535,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-20T21:34:13.000Z","date":"2020-11-18","kind":"exercise","acquired":true,"shares":18670,"price":4.14,"value":77293.8,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 94,734 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":132621,"source":{"system":"sec-edgar","filing":"0001209191-20-059665","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059665/doc4.xml","form_type":"4"}},{"id":2975717,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby 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Stock","underlying_shares":24633},"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975716,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-16","kind":"exercise","acquired":false,"shares":8938,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"This option is fully vested and exercisable."}],"balance_after":43303,"derivative":{"exercise_price":4.14,"expiration_date":"2027-02-28","underlying":"Common Stock","underlying_shares":8938},"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975715,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-16","kind":"exercise","acquired":false,"shares":9445,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F8","text":"This option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":3.99,"expiration_date":"2026-03-01","underlying":"Common Stock","underlying_shares":9445},"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975714,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby 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The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price"},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975713,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-17","kind":"exercise","acquired":true,"shares":24633,"price":4.14,"value":101980.62,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"Represents 100,697 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":138584,"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975712,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-16","kind":"sale","acquired":false,"shares":8938,"price":11.41,"value":101982.58,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Average price with actual price ranging from $11.40 and $11.45. The reporting person will provide to the staff of the Securities and Exchange Commission,\nthe issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975711,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-16","kind":"exercise","acquired":true,"shares":8938,"price":4.14,"value":37003.32,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 85,002 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":122889,"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975710,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-16","kind":"sale","acquired":false,"shares":9445,"price":11.43,"value":107956.35,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Average price with actual price ranging from $11.40 and $11.49. The reporting person will provide to the staff of the Securities and Exchange Commission,\nthe issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2975709,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-18T23:17:28.000Z","date":"2020-11-16","kind":"exercise","acquired":true,"shares":9445,"price":3.99,"value":37685.55,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 85,509 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":123396,"source":{"system":"sec-edgar","filing":"0001209191-20-059201","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120059201/doc4.xml","form_type":"4"}},{"id":2979976,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-16T22:59:20.000Z","date":"2020-11-13","kind":"exercise","acquired":false,"shares":9487,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F4","text":"This option is fully vested and exercisable."}],"balance_after":9445,"derivative":{"exercise_price":3.99,"expiration_date":"2026-03-01","underlying":"Common Stock","underlying_shares":9487},"source":{"system":"sec-edgar","filing":"0001209191-20-058526","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120058526/doc4.xml","form_type":"4"}},{"id":2979975,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-16T22:59:20.000Z","date":"2020-11-13","kind":"sale","acquired":false,"shares":9487,"price":11.29,"value":107108.23,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F3","text":"Average price with actual price ranging from $11.17 and $11.71.  The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-058526","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120058526/doc4.xml","form_type":"4"}},{"id":2979974,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-16T22:59:20.000Z","date":"2020-11-13","kind":"exercise","acquired":true,"shares":9487,"price":3.99,"value":37853.13,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 85,551 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":123438,"source":{"system":"sec-edgar","filing":"0001209191-20-058526","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120058526/doc4.xml","form_type":"4"}},{"id":2979973,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-16T22:59:20.000Z","date":"2020-11-12","kind":"sale","acquired":false,"shares":1500,"price":11.35,"value":17025.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 76,064 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":113951,"source":{"system":"sec-edgar","filing":"0001209191-20-058526","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120058526/doc4.xml","form_type":"4"}},{"id":2984213,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-11","kind":"exercise","acquired":false,"shares":2850,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."}],"balance_after":18932,"derivative":{"exercise_price":3.99,"expiration_date":"2026-03-01","underlying":"Common Stock","underlying_shares":2850},"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984212,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-10","kind":"exercise","acquired":false,"shares":15608,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."}],"balance_after":21782,"derivative":{"exercise_price":3.99,"expiration_date":"2026-03-01","underlying":"Common Stock","underlying_shares":15608},"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984211,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-09","kind":"exercise","acquired":false,"shares":16462,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."}],"balance_after":37390,"derivative":{"exercise_price":3.99,"expiration_date":"2026-03-01","underlying":"Common Stock","underlying_shares":16462},"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984210,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-11","kind":"sale","acquired":false,"shares":2850,"price":11.7,"value":33345.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 77,564 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":115451,"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984209,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-11","kind":"exercise","acquired":true,"shares":2850,"price":3.99,"value":11371.5,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F6","text":"Represents 80,414 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":118301,"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984208,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-10","kind":"sale","acquired":false,"shares":15608,"price":11.7,"value":182613.6,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F5","text":"Average price with actual price ranging from $11.70 and $11.73.  The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security, holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 77,564 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":115451,"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984207,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-10","kind":"exercise","acquired":true,"shares":15608,"price":3.99,"value":62275.92,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 93,172 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":131059,"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984206,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-09","kind":"sale","acquired":false,"shares":16462,"price":11.78,"value":193922.36,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F2","text":"Average price with actual price ranging from $11.70 and $12.21.The reporting person will provide to the staff of the Securities and Exchange Commission, the issuer, or any security, holder of the issuer, upon request, full information regarding the number of shares sold at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F3","text":"Represents 77,564 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":115451,"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":2984205,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-11-12T21:39:15.000Z","date":"2020-11-09","kind":"exercise","acquired":true,"shares":16462,"price":3.99,"value":65683.38,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 94,026 shares of Common Stock and 37,887 Restricted Stock Units."}],"balance_after":131913,"source":{"system":"sec-edgar","filing":"0001209191-20-057973","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120057973/doc4.xml","form_type":"4"}},{"id":3238620,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-03-02T21:26:00.000Z","date":"2020-02-28","kind":"tax_withholding","acquired":false,"shares":5046,"price":7.95,"value":40115.7,"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 77,564 shares of Common Stock and 37,887 RSUs."}],"balance_after":115451,"source":{"system":"sec-edgar","filing":"0001209191-20-014455","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120014455/doc4.xml","form_type":"4"}},{"id":3238619,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-03-02T21:26:00.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":3616,"price":7.92,"value":28638.72,"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 65,239 shares of Common Stock and 55,258 RSUs."}],"balance_after":120497,"source":{"system":"sec-edgar","filing":"0001209191-20-014455","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120014455/doc4.xml","form_type":"4"}},{"id":3241547,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS 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Stock","underlying_shares":47899},"source":{"system":"sec-edgar","filing":"0001209191-20-013963","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013963/doc4.xml","form_type":"4"}},{"id":3241546,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2020-02-28T21:57:44.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":7793,"price":8.02,"value":62499.86,"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 58,065 shares of Common Stock and 66,048 shares of Restricted Stock Units."}],"balance_after":124113,"source":{"system":"sec-edgar","filing":"0001209191-20-013963","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013963/doc4.xml","form_type":"4"}},{"id":3619675,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2019-03-04T21:23:16.000Z","date":"2019-03-01","kind":"tax_withholding","acquired":false,"shares":2760,"price":3.52,"value":9715.2,"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 58,065 shares of Common Stock and 58,255 Restricted Stock Units."}],"balance_after":116320,"source":{"system":"sec-edgar","filing":"0001209191-19-015611","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015611/doc4.xml","form_type":"4"}},{"id":3619674,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2019-03-04T21:23:16.000Z","date":"2019-02-28","kind":"tax_withholding","acquired":false,"shares":6029,"price":3.46,"value":20860.34,"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 51,635 shares of Common Stock and 67,445 Restricted Stock Units."}],"balance_after":119080,"source":{"system":"sec-edgar","filing":"0001209191-19-015611","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015611/doc4.xml","form_type":"4"}},{"id":3623503,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Option (Right to Buy)","published_at":"2019-03-02T00:45:11.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":65159,"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":65159,"derivative":{"exercise_price":3.63,"expiration_date":"2029-02-27","underlying":"Common Stock","underlying_shares":65159},"source":{"system":"sec-edgar","filing":"0001209191-19-015231","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015231/doc4.xml","form_type":"4"}},{"id":3623502,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2019-03-02T00:45:11.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":32369,"price":3.63,"value":117499.47,"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 40,293 shares of Common Stock and 84,816 Restricted Stock Units."}],"balance_after":125109,"source":{"system":"sec-edgar","filing":"0001209191-19-015231","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015231/doc4.xml","form_type":"4"}},{"id":3819752,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2018-09-11T21:44:57.000Z","date":"2018-09-10","kind":"tax_withholding","acquired":false,"shares":1221,"price":4.84,"value":5909.64,"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 restricted stock units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 40,293 shares of Common Stock and 52,447 restricted stock units."}],"balance_after":92740,"source":{"system":"sec-edgar","filing":"0001209191-18-050546","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118050546/doc4.xml","form_type":"4"}},{"id":3996574,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2018-03-14T14:23:29.000Z","date":"2018-03-11","kind":"tax_withholding","acquired":false,"shares":1433,"price":4.59,"value":6577.47,"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 37,369 shares of common stock and 56,592 restricted stock units."}],"balance_after":93961,"source":{"system":"sec-edgar","filing":"0001209191-18-019491","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118019491/doc4.xml","form_type":"4"}},{"id":4020513,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Stock Options (Right to Buy)","published_at":"2018-03-02T23:33:06.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":52735,"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":52735,"derivative":{"exercise_price":4.6,"expiration_date":"2028-02-28","underlying":"Common Stock","underlying_shares":52735},"source":{"system":"sec-edgar","filing":"0001209191-18-015986","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015986/doc4.xml","form_type":"4"}},{"id":4020512,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2018-03-02T23:33:06.000Z","date":"2018-03-01","kind":"tax_withholding","acquired":false,"shares":2954,"price":4.57,"value":13499.78,"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 33,939 shares of common stock and 61,455 restricted stock units."}],"balance_after":95394,"source":{"system":"sec-edgar","filing":"0001209191-18-015986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015986/doc4.xml","form_type":"4"}},{"id":4020511,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2018-03-02T23:33:06.000Z","date":"2018-02-28","kind":"tax_withholding","acquired":false,"shares":3078,"price":4.6,"value":14158.8,"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 27,704 shares of common stock and 70,644 restricted stock units."}],"balance_after":98348,"source":{"system":"sec-edgar","filing":"0001209191-18-015986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015986/doc4.xml","form_type":"4"}},{"id":4020510,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2018-03-02T23:33:06.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":25543,"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 21,926 shares of common stock and 79,500 restricted stock units."}],"balance_after":101426,"source":{"system":"sec-edgar","filing":"0001209191-18-015986","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015986/doc4.xml","form_type":"4"}},{"id":4211828,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2017-09-12T20:32:33.000Z","date":"2017-09-10","kind":"tax_withholding","acquired":false,"shares":1345,"price":4.18,"value":5622.1,"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 21,926 shares of common stock and 53,957 restricted stock units."}],"balance_after":75883,"source":{"system":"sec-edgar","filing":"0001209191-17-052433","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117052433/doc4.xml","form_type":"4"}},{"id":4388988,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61821,"kind":"person","name":"Whitaker Corby C","position":1,"cik":"0001610273","reported_name":"Whitaker Corby C","relationship":{"director":false,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"SVP, Sales and Marketing"}}],"security":"Common Stock","published_at":"2017-03-14T00:15:01.000Z","date":"2017-03-11","kind":"tax_withholding","acquired":false,"shares":1836,"price":4.07,"value":7472.52,"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 19,127 shares of common stock and 58,101 restricted stock units."}],"balance_after":77228,"source":{"system":"sec-edgar","filing":"0001209191-17-020362","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117020362/doc4.xml","form_type":"4"}}],"next_cursor":"2017-03-14T00:15:01.000000Z,4388988"}