{"transactions":[{"id":851654,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-03-10T21:00:04.000Z","date":"2026-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":4275,"price":3.22,"value":13765.5,"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 438,349 shares of Common Stock and 199,485 RSUs."}],"balance_after":637834,"source":{"system":"sec-edgar","filing":"0001193125-26-100349","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526100349/ownership.xml","form_type":"4"}},{"id":856500,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2026-03-06T22:00:29.000Z","date":"2026-03-04","kind":"grant","planned":false,"acquired":true,"shares":212249,"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":212249,"derivative":{"exercise_price":3.35,"expiration_date":"2036-03-04","underlying":"Common Stock","underlying_shares":212249},"source":{"system":"sec-edgar","filing":"0001193125-26-096830","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526096830/ownership.xml","form_type":"4"}},{"id":856499,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-03-06T22:00:29.000Z","date":"2026-03-05","kind":"tax_withholding","planned":false,"acquired":false,"shares":8618,"price":3.27,"value":28180.86,"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 430,387 shares of Common Stock and 211,722 RSUs."}],"balance_after":642109,"source":{"system":"sec-edgar","filing":"0001193125-26-096830","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526096830/ownership.xml","form_type":"4"}},{"id":856498,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2026-03-06T22:00:29.000Z","date":"2026-03-04","kind":"grant","planned":false,"acquired":true,"shares":156716,"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":650727,"source":{"system":"sec-edgar","filing":"0001193125-26-096830","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526096830/ownership.xml","form_type":"4"}},{"id":999172,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2025-11-14T22:00:04.000Z","date":"2025-11-13","kind":"sale","planned":true,"acquired":false,"shares":56845,"price":3.23,"value":183609.35,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transaction reported on this Form 4 was effected pursuant to a rule 10b5-1 trading plan. This plan was previously adopted by the reporting person on August 11, 2025, to sell a limited number of shares for tax purposes in connection with a one-time personal real estate transaction."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These transactions were executed in multiple trades at prices ranging from $3.15 to $3.41. 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 414,306 shares of Common Stock and 79,705 Restricted Stock Units."}],"balance_after":494011,"source":{"system":"sec-edgar","filing":"0001193125-25-283251","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312525283251/ownership.xml","form_type":"4"}},{"id":1152523,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2025-05-13T00:59:13.000Z","date":"2025-05-12","kind":"purchase","planned":false,"acquired":true,"shares":20000,"price":5.35,"value":107000.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 471,151 shares of Common Stock and 79,705 RSUs."}],"balance_after":550856,"source":{"system":"sec-edgar","filing":"0000950170-25-069636","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025069636/ownership.xml","form_type":"4"}},{"id":1212944,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2025-03-11T22:50:28.000Z","date":"2025-03-07","kind":"tax_withholding","planned":false,"acquired":false,"shares":3569,"price":7.95,"value":28373.55,"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\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 451,151 shares of Common Stock and 79,705 RSUs."}],"balance_after":530856,"source":{"system":"sec-edgar","filing":"0000950170-25-037450","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025037450/ownership.xml","form_type":"4"}},{"id":1217939,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Performance Share Units","published_at":"2025-03-07T21:48:40.000Z","date":"2025-03-05","kind":"grant","planned":false,"acquired":true,"shares":108418,"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":108418,"derivative":{"exercise_date":"2028-03-05","underlying":"Common Stock","underlying_shares":108418},"source":{"system":"sec-edgar","filing":"0000950170-25-035605","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035605/ownership.xml","form_type":"4"}},{"id":1217938,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2025-03-07T21:48:40.000Z","date":"2025-03-05","kind":"grant","planned":false,"acquired":true,"shares":76417,"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":76417,"derivative":{"exercise_price":7.84,"expiration_date":"2035-03-05","underlying":"Common Stock","underlying_shares":76417},"source":{"system":"sec-edgar","filing":"0000950170-25-035605","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035605/ownership.xml","form_type":"4"}},{"id":1217937,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2025-03-07T21:48:40.000Z","date":"2025-03-05","kind":"grant","planned":false,"acquired":true,"shares":54209,"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 442,484 shares of Common Stock and 91,941 RSUs."}],"balance_after":534425,"source":{"system":"sec-edgar","filing":"0000950170-25-035605","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035605/ownership.xml","form_type":"4"}},{"id":1217936,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2025-03-07T21:48:40.000Z","date":"2025-03-05","kind":"tax_withholding","planned":false,"acquired":false,"shares":2316,"price":7.84,"value":18157.44,"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":480216,"source":{"system":"sec-edgar","filing":"0000950170-25-035605","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025035605/ownership.xml","form_type":"4"}},{"id":1247057,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2025-02-26T01:56:08.000Z","date":"2025-02-21","kind":"tax_withholding","planned":false,"acquired":false,"shares":1108,"price":8.04,"value":8908.32,"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 438,170 shares of Common Stock and 44,362 RSUs."}],"balance_after":482532,"source":{"system":"sec-edgar","filing":"0000950170-25-027210","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025027210/ownership.xml","form_type":"4"}},{"id":1396994,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-10-01T15:31:39.000Z","date":"2024-09-30","kind":"sale","planned":true,"acquired":false,"shares":63355,"price":30.03,"value":1902550.65,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 Trading Plan previously adopted by the reporting person on June 4, 2024."},{"field":"price","element":"transactionPricePerShare","label":"F2","text":"These transactions were executed in multiple trades at prices ranging from $30.00 to $30.17. 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 436,108 shares of Common Stock and 47,532 Restricted Stock Units."}],"balance_after":483640,"source":{"system":"sec-edgar","filing":"0000950170-24-110608","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024110608/ownership.xml","form_type":"4"}},{"id":1466179,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-07-01T13:13:20.000Z","date":"2024-06-29","kind":"tax_withholding","planned":true,"acquired":false,"shares":75885,"price":23.85,"value":1809857.25,"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 Restricted Stock Awards."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 499,463 shares of Common Stock and 47,532 Restricted Stock Units."}],"balance_after":546995,"source":{"system":"sec-edgar","filing":"0000950170-24-079293","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024079293/ownership.xml","form_type":"4"}},{"id":1499405,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-29","kind":"exercise","planned":true,"acquired":false,"shares":296771,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"shares","element":"transactionShares","label":"F8","text":"The reporting person previously disclosed the grant of an aggregate of 454,926 options on December 11, 2015, including 370,181 options subject to performance conditions. Of the performance-based options, 131,578 options were previously forfeited by the reporting person as a result of the applicable performance targets not being achieved. Accordingly, an aggregate of 323,348 options remained exercisable from the December 11, 2015 grant as of the date of this Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F8","text":"The reporting person previously disclosed the grant of an aggregate of 454,926 options on December 11, 2015, including 370,181 options subject to performance conditions. Of the performance-based options, 131,578 options were previously forfeited by the reporting person as a result of the applicable performance targets not being achieved. Accordingly, an aggregate of 323,348 options remained exercisable from the December 11, 2015 grant as of the date of this Form 4."}],"balance_after":0,"derivative":{"exercise_price":6.4,"expiration_date":"2025-12-11","underlying":"Common Stock","underlying_shares":296771},"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":11,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499404,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"exercise","planned":true,"acquired":false,"shares":26577,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"shares","element":"transactionShares","label":"F8","text":"The reporting person previously disclosed the grant of an aggregate of 454,926 options on December 11, 2015, including 370,181 options subject to performance conditions. Of the performance-based options, 131,578 options were previously forfeited by the reporting person as a result of the applicable performance targets not being achieved. Accordingly, an aggregate of 323,348 options remained exercisable from the December 11, 2015 grant as of the date of this Form 4."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."},{"field":"derivative.underlying_shares","element":"underlyingSecurityShares","label":"F8","text":"The reporting person previously disclosed the grant of an aggregate of 454,926 options on December 11, 2015, including 370,181 options subject to performance conditions. Of the performance-based options, 131,578 options were previously forfeited by the reporting person as a result of the applicable performance targets not being achieved. Accordingly, an aggregate of 323,348 options remained exercisable from the December 11, 2015 grant as of the date of this Form 4."}],"balance_after":296771,"derivative":{"exercise_price":6.4,"expiration_date":"2025-12-11","underlying":"Common Stock","underlying_shares":26577},"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":10,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499403,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"exercise","planned":true,"acquired":false,"shares":108105,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","text":"This option is fully vested and exercisable."}],"balance_after":0,"derivative":{"exercise_price":7.54,"expiration_date":"2025-03-11","underlying":"Common Stock","underlying_shares":108105},"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":9,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499402,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"exercise","planned":true,"acquired":false,"shares":259671,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"derivative.exercise_date","element":"exerciseDate","label":"F7","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":259671},"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499401,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-29","kind":"sale","planned":true,"acquired":false,"shares":176746,"price":29.38,"value":5192797.48,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares of common stock were sold solely to satisfy the reporting person's tax withholding obligations related to the exercise of stock options to purchase 691,124 shares as reported herein."},{"field":"price","element":"transactionPricePerShare","label":"F5","text":"These transactions were executed in multiple trades at prices ranging from $28.67 to $29.59. 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":"F6","text":"Represents 418,398 shares of Common Stock and 47,532 Restricted Stock Units and 156,950 shares of Restricted Stock."}],"balance_after":622880,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499400,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-29","kind":"exercise","planned":true,"acquired":true,"shares":296771,"price":6.4,"value":1899334.4,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."}],"balance_after":799626,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499399,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"sale","planned":true,"acquired":false,"shares":26286,"price":29.72,"value":781219.92,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares of common stock were sold solely to satisfy the reporting person's tax withholding obligations related to the exercise of stock options to purchase 691,124 shares as reported herein."},{"field":"price","element":"transactionPricePerShare","label":"F4","text":"These transactions were executed in multiple trades at prices ranging from $29.59 to $30.00. 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."}],"balance_after":502855,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499398,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"sale","planned":true,"acquired":false,"shares":230658,"price":29.18,"value":6730600.44,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."},{"field":"shares","element":"transactionShares","label":"F2","text":"The shares of common stock were sold solely to satisfy the reporting person's tax withholding obligations related to the exercise of stock options to purchase 691,124 shares as reported herein."},{"field":"price","element":"transactionPricePerShare","label":"F3","text":"These transactions were executed in multiple trades at prices ranging from $28.59 to $29.58. 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."}],"balance_after":529141,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499397,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"exercise","planned":true,"acquired":true,"shares":26577,"price":6.4,"value":170092.8,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."}],"balance_after":759799,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499396,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"exercise","planned":true,"acquired":true,"shares":108105,"price":7.54,"value":815111.7,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."}],"balance_after":733222,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1499395,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-05-30T00:27:49.000Z","date":"2024-05-28","kind":"exercise","planned":true,"acquired":true,"shares":259671,"price":10.78,"value":2799253.38,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The transactions reported on this Form 4 were effected pursuant to a Rule 10B5-1 trading plan previously adopted by the reporting person on February 26, 2024."}],"balance_after":625117,"source":{"system":"sec-edgar","filing":"0000950170-24-066183","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024066183/ownership.xml","form_type":"4"}},{"id":1584699,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-03-11T20:03:16.000Z","date":"2024-03-08","kind":"tax_withholding","planned":false,"acquired":false,"shares":4078,"price":17.02,"value":69407.56,"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 160,964 shares of Common Stock, 47,532 RSUs and 156,950 shares of Restricted Stock."}],"balance_after":365446,"source":{"system":"sec-edgar","filing":"0000950170-24-029213","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024029213/ownership.xml","form_type":"4"}},{"id":1589579,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2024-03-07T21:54:31.000Z","date":"2024-03-05","kind":"grant","planned":false,"acquired":true,"shares":87284,"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":87284,"derivative":{"exercise_price":16.34,"expiration_date":"2034-03-05","underlying":"Common Stock","underlying_shares":87284},"source":{"system":"sec-edgar","filing":"0000950170-24-028113","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024028113/ownership.xml","form_type":"4"}},{"id":1589578,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-03-07T21:54:31.000Z","date":"2024-03-05","kind":"grant","planned":false,"acquired":true,"shares":19889,"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 152,805 shares of Common Stock, 59,769 RSUs and 156,950 shares of Restricted Stock."}],"balance_after":369524,"source":{"system":"sec-edgar","filing":"0000950170-24-028113","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024028113/ownership.xml","form_type":"4"}},{"id":1589570,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-03-07T21:27:40.000Z","date":"2024-03-05","kind":"disposition_to_issuer","planned":false,"acquired":false,"shares":304666,"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 29, 2021 that were cancelled on March 5, 2024."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 152,805 shares of Common Stock, 39,880 RSUs and 156,950 shares of Restricted Stock."}],"balance_after":349635,"source":{"system":"sec-edgar","filing":"0000950170-24-028014","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024028014/ownership.xml","form_type":"4"}},{"id":1616477,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-02-27T18:38:32.000Z","date":"2024-02-24","kind":"tax_withholding","planned":false,"acquired":false,"shares":818,"price":16.96,"value":13873.28,"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 153,290 shares of Common Stock, 39,880 RSUs and 461,616 shares of Restricted Stock."}],"balance_after":654786,"source":{"system":"sec-edgar","filing":"0000950170-24-020890","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024020890/ownership.xml","form_type":"4"}},{"id":1616476,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2024-02-27T18:38:32.000Z","date":"2024-02-23","kind":"tax_withholding","planned":false,"acquired":false,"shares":1099,"price":16.96,"value":18639.04,"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":655604,"source":{"system":"sec-edgar","filing":"0000950170-24-020890","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024020890/ownership.xml","form_type":"4"}},{"id":1784945,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right-to-Buy)","published_at":"2023-09-08T21:41:57.000Z","date":"2023-09-07","kind":"grant","planned":false,"acquired":true,"shares":170000,"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":170000,"derivative":{"exercise_price":6.51,"expiration_date":"2033-09-07","underlying":"Common Stock","underlying_shares":170000},"source":{"system":"sec-edgar","filing":"0001209191-23-048828","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123048828/doc4.xml","form_type":"4"}},{"id":1813101,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-08-08T20:13:01.000Z","date":"2023-08-08","kind":"purchase","planned":false,"acquired":true,"shares":25000,"price":6.8279,"value":170697.5,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"The price reported represents a weighted average price. These shares were purchased in multiple transactions at prices ranging from $6.745 to $7.00 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 purchased at each separate price."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 149,603 shares of Common Stock, 45,484 RSUs and 461,616 shares of Restricted Stock."}],"balance_after":656703,"source":{"system":"sec-edgar","filing":"0001209191-23-044970","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123044970/doc4.xml","form_type":"4"}},{"id":1870464,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right-to-Buy)","published_at":"2023-06-02T20:19:41.000Z","date":"2023-06-01","kind":"grant","planned":false,"acquired":true,"shares":168843,"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 of the shares on March 8, 2026."}],"balance_after":168843,"derivative":{"exercise_price":6.81,"expiration_date":"2033-06-01","underlying":"Common Stock","underlying_shares":168843},"source":{"system":"sec-edgar","filing":"0001209191-23-033702","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123033702/doc4.xml","form_type":"4"}},{"id":1870463,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-06-02T20:19:41.000Z","date":"2023-06-01","kind":"grant","planned":false,"acquired":true,"shares":36710,"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 124,603 shares of Common Stock, 45,484 RSUs and 461,616 shares of Restricted Stock."}],"balance_after":631703,"source":{"system":"sec-edgar","filing":"0001209191-23-033702","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123033702/doc4.xml","form_type":"4"}},{"id":1987630,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-02-28T22:14:32.000Z","date":"2023-02-26","kind":"tax_withholding","acquired":false,"shares":2210,"price":10.95,"value":24199.5,"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 124,603 shares of Common Stock, 8,774 RSUs and 461,616 shares of Restricted Stock."}],"balance_after":594993,"source":{"system":"sec-edgar","filing":"0001209191-23-013775","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123013775/doc4.xml","form_type":"4"}},{"id":1987629,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-02-28T22:14:32.000Z","date":"2023-02-24","kind":"tax_withholding","acquired":false,"shares":844,"price":10.95,"value":9241.8,"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\")."}],"balance_after":597203,"source":{"system":"sec-edgar","filing":"0001209191-23-013775","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123013775/doc4.xml","form_type":"4"}},{"id":1990837,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2023-02-27T23:16:09.000Z","date":"2023-02-23","kind":"tax_withholding","acquired":false,"shares":1099,"price":11.32,"value":12440.68,"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 117,898 shares of Common Stock, 18,533 RSUs and 461,616 shares of Restricted Stock."}],"balance_after":598047,"source":{"system":"sec-edgar","filing":"0001209191-23-013366","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919123013366/doc4.xml","form_type":"4"}},{"id":2273703,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2022-05-12T20:37:49.000Z","date":"2022-05-12","kind":"purchase","acquired":true,"shares":5000,"price":14.63,"value":73150.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 115,827 shares of Common Stock, 21,703 Restricted Stock Units and 461,616 Restricted Stock."}],"balance_after":599146,"source":{"system":"sec-edgar","filing":"0001209191-22-028577","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122028577/doc4.xml","form_type":"4"}},{"id":2365991,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2022-03-02T00:52:30.000Z","date":"2022-02-27","kind":"tax_withholding","acquired":false,"shares":11255,"price":29.51,"value":332135.05,"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 RSUs."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 110,827 shares of common stock, 21,703 RSUs and 461,616 restricted shares."}],"balance_after":594146,"source":{"system":"sec-edgar","filing":"0001209191-22-014398","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122014398/doc4.xml","form_type":"4"}},{"id":2365990,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2022-03-02T00:52:30.000Z","date":"2022-02-26","kind":"tax_withholding","acquired":false,"shares":2193,"price":29.51,"value":64715.43,"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 89,713 shares of Common Stock, 54,072 RSUs and 461,616 restricted shares."}],"balance_after":605401,"source":{"system":"sec-edgar","filing":"0001209191-22-014398","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122014398/doc4.xml","form_type":"4"}},{"id":2372573,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right to Buy)","published_at":"2022-02-26T00:09:59.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":49795,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F5","text":"The options vest as to one-third of the shares on February 23, 2023, and additional one-third of the shares on February 23, 2024 and the remaining one-third of the shares on February 23, 2025."}],"balance_after":49795,"derivative":{"exercise_price":26.29,"expiration_date":"2032-02-23","underlying":"Common Stock","underlying_shares":49795},"source":{"system":"sec-edgar","filing":"0001209191-22-013364","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013364/doc4.xml","form_type":"4"}},{"id":2372572,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2022-02-26T00:09:59.000Z","date":"2022-02-24","kind":"tax_withholding","acquired":false,"shares":737,"price":29,"value":21373.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F3","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of Restricted Stock Units."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 84,580 shares of Common Stock, 61,398 RSUs and 461,616 Restricted Stock."}],"balance_after":607594,"source":{"system":"sec-edgar","filing":"0001209191-22-013364","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013364/doc4.xml","form_type":"4"}},{"id":2372571,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2022-02-26T00:09:59.000Z","date":"2022-02-23","kind":"grant","acquired":true,"shares":9509,"price":26.29,"value":249991.61,"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 82,882 shares of Common Stock, 63,833 RSUs and 461,616 Restricted Stock."}],"balance_after":608331,"source":{"system":"sec-edgar","filing":"0001209191-22-013364","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919122013364/doc4.xml","form_type":"4"}},{"id":2526942,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":17399,"price":51.92,"value":903356.08,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F16","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 $51.51 to $52.40 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":"F17","text":"Represents 82,882 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":598822,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":8,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526941,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-03","kind":"sale","acquired":false,"shares":18703,"price":51.1,"value":955723.3,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F14","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 $50.52 to $51.50 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":"F15","text":"Represents 100,281 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":616221,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":7,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526940,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-02","kind":"sale","acquired":false,"shares":4225,"price":51.83,"value":218981.75,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F12","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 $51.44 to $51.98 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":"F13","text":"Represents 118,984 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":634924,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":6,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526939,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-02","kind":"sale","acquired":false,"shares":31878,"price":52.43,"value":1671363.54,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F10","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 $51.98 to $52.98 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":"F11","text":"Represents 123,209 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":639149,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":5,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526938,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":4702,"price":52.17,"value":245303.34,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F8","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 $51.73 to $52.53 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":"F9","text":"Represents 155,087 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":671027,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526937,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":22241,"price":53.05,"value":1179885.05,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"field":"price","element":"transactionPricePerShare","label":"F6","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 $52.54 to $53.54 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":"F7","text":"Represents 159,789 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":675729,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526936,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":5760,"price":53.87,"value":310291.2,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"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 transactions reported was $53.54 to $54.53 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 182,030 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":697970,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2526935,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-11-04T01:28:59.000Z","date":"2021-11-01","kind":"sale","acquired":false,"shares":3400,"price":54.92,"value":186728.0,"ownership":{"direct":true},"footnotes":[{"field":"kind","element":"transactionCoding","label":"F1","text":"The sales of shares were effected pursuant to a Rule 10b5-1 trading plan of the Reporting Person adopted on August 9, 2021."},{"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 transactions reported was $54.54 to $55.54 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 187,790 shares of common stock, 54,324 shares of restricted stock units and 461,616 shares of restricted common stock."}],"balance_after":703730,"source":{"system":"sec-edgar","filing":"0001209191-21-062858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121062858/doc4.xml","form_type":"4"}},{"id":2648195,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-07-01T22:43:35.000Z","date":"2021-06-29","kind":"grant","acquired":true,"shares":461616,"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 Agreement by and between Aspen Aerogels, Inc. and the reporting person subject to the 2014 Employee, Director and Consultant Equity Incentive Plan.  In order for a tranche of this Award to vest, both time and performance vesting conditions must be satisfied.  For the time vesting condition, 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 hurdle is achieved, subject to a maximum five-year vesting period for shares with respect to which the performance hurdle has been achieved.  With respect to the performance vesting condition, there are three tranches with different share price hurdles and a five-year total performance period. 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 Agreement by and between Aspen Aerogels, Inc. and the reporting person subject to the 2014 Employee, Director and Consultant Equity Incentive Plan.  In order for a tranche of this Award to vest, both time and performance vesting conditions must be satisfied.  For the time vesting condition, 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 hurdle is achieved, subject to a maximum five-year vesting period for shares with respect to which the performance hurdle has been achieved.  With respect to the performance vesting condition, there are three tranches with different share price hurdles and a five-year total performance period. 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 191,190 shares of common stock, 54,324 restricted stock units and 461,616 shares of restricted stock."}],"balance_after":730011,"source":{"system":"sec-edgar","filing":"0001209191-21-044570","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121044570/doc4.xml","form_type":"4"}},{"id":2821193,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-03-02T21:39:52.000Z","date":"2021-02-28","kind":"tax_withholding","acquired":false,"shares":11112,"price":22.25,"value":247242.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F4","text":"Represents 191,190 shares of Common Stock and 54,324 Restricted Stock Units."}],"balance_after":245514,"source":{"system":"sec-edgar","filing":"0001209191-21-016066","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":3,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016066/doc4.xml","form_type":"4"}},{"id":2821192,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-03-02T21:39:52.000Z","date":"2021-02-27","kind":"tax_withholding","acquired":false,"shares":9501,"price":22.25,"value":211397.25,"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":"F3","text":"Represents 176,758 shares of Common Stock and 79,868 Restricted Stock Units."}],"balance_after":256626,"source":{"system":"sec-edgar","filing":"0001209191-21-016066","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016066/doc4.xml","form_type":"4"}},{"id":2821191,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-03-02T21:39:52.000Z","date":"2021-02-26","kind":"tax_withholding","acquired":false,"shares":2268,"price":22.25,"value":50463.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"Shares withheld by Registrant to satisfy the minimum statutory tax withholding requirements on vesting of time-based restricted stock units (\"RSUs\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 153,890 shares of Common Stock and 112,237 Restricted Stock Units."}],"balance_after":266127,"source":{"system":"sec-edgar","filing":"0001209191-21-016066","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121016066/doc4.xml","form_type":"4"}},{"id":2830134,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right to Buy)","published_at":"2021-02-26T22:12:52.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":40175,"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":40175,"derivative":{"exercise_price":24.13,"expiration_date":"2031-02-24","underlying":"Common Stock","underlying_shares":40175},"source":{"system":"sec-edgar","filing":"0001209191-21-014858","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121014858/doc4.xml","form_type":"4"}},{"id":2830133,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2021-02-26T22:12:52.000Z","date":"2021-02-24","kind":"grant","acquired":true,"shares":7304,"price":24.13,"value":176245.52,"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 148,833 shares of Common Stock and 119,562 Restricted Stock Units and excludes 78,125 restricted shares forfeited as of December 31, 2020."}],"balance_after":268395,"source":{"system":"sec-edgar","filing":"0001209191-21-014858","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919121014858/doc4.xml","form_type":"4"}},{"id":3218120,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2020-03-10T20:16:36.000Z","date":"2020-03-09","kind":"purchase","acquired":true,"shares":1000,"price":7.01,"value":7010.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 148,833 shares of Common Stock, 112,258 RSUs and 78,125 restricted shares of Common Stock."}],"balance_after":339216,"source":{"system":"sec-edgar","filing":"0001209191-20-017649","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120017649/doc4.xml","form_type":"4"}},{"id":3218119,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2020-03-10T20:16:36.000Z","date":"2020-03-09","kind":"purchase","acquired":true,"shares":1000,"price":7.35,"value":7350.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Represents 147,833 shares of Common Stock, 112,258 Restricted Stock Units (\"RSU\") and 78,125 restricted shares of Common Stock."}],"balance_after":338216,"source":{"system":"sec-edgar","filing":"0001209191-20-017649","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120017649/doc4.xml","form_type":"4"}},{"id":3238625,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2020-03-02T21:26:55.000Z","date":"2020-02-28","kind":"tax_withholding","acquired":false,"shares":7497,"price":7.95,"value":59601.15,"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 146,833 shares of Common Stock, 112,258 RSUs and 78,125 restricted shares of Common Stock."}],"balance_after":337216,"source":{"system":"sec-edgar","filing":"0001209191-20-014458","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120014458/doc4.xml","form_type":"4"}},{"id":3238624,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2020-03-02T21:26:55.000Z","date":"2020-02-27","kind":"tax_withholding","acquired":false,"shares":9695,"price":7.92,"value":76784.4,"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 (\"RSU\")."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 128,787 shares of Common Stock, 137,801 RSUs and 78,125 restricted shares of Common Stock."}],"balance_after":344713,"source":{"system":"sec-edgar","filing":"0001209191-20-014458","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120014458/doc4.xml","form_type":"4"}},{"id":3241543,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right-to-Buy)","published_at":"2020-02-28T21:56:25.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":135077,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest as to one-third of the shares on February 26, 2021, an additional one-third of the shares on February 26, 2022 and the remaining one-third of the shares on February 26, 2023."}],"balance_after":135077,"derivative":{"exercise_price":8.02,"expiration_date":"2030-02-26","underlying":"Common Stock","underlying_shares":135077},"source":{"system":"sec-edgar","filing":"0001209191-20-013959","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013959/doc4.xml","form_type":"4"}},{"id":3241542,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2020-02-28T21:56:25.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":21976,"price":8.02,"value":176247.52,"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 106,113 shares of Common Stock, 170,170 shares of Restricted Stock Units and 78,125 restricted shares of Common Stock."}],"balance_after":354408,"source":{"system":"sec-edgar","filing":"0001209191-20-013959","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013959/doc4.xml","form_type":"4"}},{"id":3241541,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Option (Right-to-Buy)","published_at":"2020-02-28T21:55:42.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":135077,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The options vest as to one-third of the shares on February 26, 2021, an additional one-third of the shares on February 26, 2022 and the remaining one-third of the shares on February 26, 2023."}],"balance_after":135077,"derivative":{"exercise_price":8.02,"expiration_date":"2030-02-26","underlying":"Common Stock","underlying_shares":135077},"source":{"system":"sec-edgar","filing":"0001209191-20-013958","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013958/doc4.xml","form_type":"4"}},{"id":3241540,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2020-02-28T21:55:42.000Z","date":"2020-02-26","kind":"grant","acquired":true,"shares":21976,"price":8.02,"value":176247.52,"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 106,113 shares of Common Stock, 170,170 shares of Restricted Stock Units and 78,125 restricted shares of Common Stock."}],"balance_after":354408,"source":{"system":"sec-edgar","filing":"0001209191-20-013958","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919120013958/doc4.xml","form_type":"4"}},{"id":3422046,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-09-05T20:17:53.000Z","date":"2019-09-04","kind":"purchase","acquired":true,"shares":1000,"price":6,"value":6000.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Comprises 148,194 Restricted Stock Units, 106,113 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":332432,"source":{"system":"sec-edgar","filing":"0001209191-19-048510","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119048510/doc4.xml","form_type":"4"}},{"id":3445715,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-08-06T20:53:20.000Z","date":"2019-08-05","kind":"purchase","acquired":true,"shares":1009,"price":6.15,"value":6205.35,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Average price with actual price ranging from $6.10 to $6.15"},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Comprises 148,194 Restricted Stock Units, 105,113 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":331432,"source":{"system":"sec-edgar","filing":"0001209191-19-044843","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119044843/doc4.xml","form_type":"4"}},{"id":3509152,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-05-29T20:26:17.000Z","date":"2019-05-28","kind":"purchase","acquired":true,"shares":1000,"price":4.7,"value":4700.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Comprises 148,194 Restricted Stock Units, 104,104 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":330423,"source":{"system":"sec-edgar","filing":"0001209191-19-033193","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119033193/doc4.xml","form_type":"4"}},{"id":3531760,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-05-10T20:33:10.000Z","date":"2019-05-09","kind":"purchase","acquired":true,"shares":5000,"price":4.65,"value":23250.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Comprises 148,194 Restricted Stock Units, 103,104 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":329423,"source":{"system":"sec-edgar","filing":"0001209191-19-028943","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119028943/doc4.xml","form_type":"4"}},{"id":3533761,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-05-09T20:26:45.000Z","date":"2019-05-08","kind":"purchase","acquired":true,"shares":1380,"price":4.59,"value":6334.2,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Comprises 148,194 Restricted Stock Units, 98,104 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":324423,"source":{"system":"sec-edgar","filing":"0001209191-19-028487","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119028487/doc4.xml","form_type":"4"}},{"id":3535361,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-05-08T20:32:31.000Z","date":"2019-05-07","kind":"purchase","acquired":true,"shares":5100,"price":4.6,"value":23460.0,"ownership":{"direct":true},"footnotes":[{"field":"price","element":"transactionPricePerShare","label":"F1","text":"Average price with actual price ranging from $4.55 to $4.60."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Comprises 148,194 Restricted Stock Units, 96,724 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":323043,"source":{"system":"sec-edgar","filing":"0001209191-19-028231","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119028231/doc4.xml","form_type":"4"}},{"id":3623505,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2019-03-02T00:45:42.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":195478,"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":195478,"derivative":{"exercise_price":3.63,"expiration_date":"2029-02-27","underlying":"Common Stock","underlying_shares":195478},"source":{"system":"sec-edgar","filing":"0001209191-19-015232","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015232/doc4.xml","form_type":"4"}},{"id":3623504,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2019-03-02T00:45:42.000Z","date":"2019-02-27","kind":"grant","acquired":true,"shares":97107,"price":3.63,"value":352498.41,"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":"Comprises 173,737 Restricted Stock Units and 66,081 shares of Common Stock and 78,125 restricted shares of Common Stock."}],"balance_after":317943,"source":{"system":"sec-edgar","filing":"0001209191-19-015232","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919119015232/doc4.xml","form_type":"4"}},{"id":4020515,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Stock Options (Right to Buy)","published_at":"2018-03-02T23:34:08.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":158206,"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 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":158206,"derivative":{"exercise_price":4.6,"expiration_date":"2028-02-28","underlying":"Common Stock","underlying_shares":158206},"source":{"system":"sec-edgar","filing":"0001209191-18-015988","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015988/doc4.xml","form_type":"4"}},{"id":4020514,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2018-03-02T23:34:08.000Z","date":"2018-02-28","kind":"grant","acquired":true,"shares":76630,"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":"Comprises 90,149 restricted stock units, 52,562 shares of common stock and 78,125 restricted shares of common stock"}],"balance_after":220836,"source":{"system":"sec-edgar","filing":"0001209191-18-015988","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919118015988/doc4.xml","form_type":"4"}},{"id":4239064,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2017-08-09T20:09:51.000Z","date":"2017-08-09","kind":"purchase","acquired":true,"shares":920,"price":4.73,"value":4351.6,"ownership":{"direct":true},"balance_after":144206,"source":{"system":"sec-edgar","filing":"0001209191-17-048245","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117048245/doc4.xml","form_type":"4"}},{"id":4239063,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2017-08-09T20:09:51.000Z","date":"2017-08-08","kind":"purchase","acquired":true,"shares":80,"price":4.75,"value":380.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Comprises 20,407 restricted stock units, 45,674 shares of common stock and 78,125 restricted shares of common stock"}],"balance_after":143286,"source":{"system":"sec-edgar","filing":"0001209191-17-048245","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919117048245/doc4.xml","form_type":"4"}},{"id":4525631,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":61819,"kind":"person","name":"Young Donald R","position":1,"cik":"0001610257","reported_name":"Young Donald R","relationship":{"director":true,"officer":true,"ten_percent_owner":false,"other":false,"officer_title":"President and CEO"}}],"security":"Common Stock","published_at":"2016-12-12T11:23:05.000Z","date":"2016-12-08","kind":"purchase","acquired":true,"shares":1000,"price":4.2,"value":4200.0,"ownership":{"direct":true},"footnotes":[{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F1","text":"Comprises 27,038 restricted stock units, 38,043 shares of common stock and 78,125 restricted shares of common stock"}],"balance_after":143206,"source":{"system":"sec-edgar","filing":"0001209191-16-154572","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000120919116154572/doc4.xml","form_type":"4"}}]}