{"transactions":[{"id":779562,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":47413,"kind":"person","name":"Robinson Cari","position":1,"cik":"0002031424","reported_name":"Robinson Cari","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2026-05-14T21:30:02.000Z","date":"2026-05-13","kind":"grant","planned":false,"acquired":true,"shares":8706,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) May 13, 2027, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2027."}],"balance_after":8706,"derivative":{"exercise_price":5.4,"expiration_date":"2036-05-13","underlying":"Common Stock","underlying_shares":8706},"source":{"system":"sec-edgar","filing":"0001193125-26-224372","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526224372/ownership.xml","form_type":"4"}},{"id":779561,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":47413,"kind":"person","name":"Robinson Cari","position":1,"cik":"0002031424","reported_name":"Robinson Cari","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2026-05-14T21:30:02.000Z","date":"2026-05-13","kind":"grant","planned":false,"acquired":true,"shares":10370,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person was granted Restricted Stock Units (\"RSUs\") representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs will vest on the earlier of (a) May 13, 2027, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2027."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 12,246 shares of Common Stock and 10,370 RSUs."}],"balance_after":22616,"source":{"system":"sec-edgar","filing":"0001193125-26-224372","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000119312526224372/ownership.xml","form_type":"4"}},{"id":1162695,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":47413,"kind":"person","name":"Robinson Cari","position":1,"cik":"0002031424","reported_name":"Robinson Cari","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Options (Right to Buy)","published_at":"2025-05-02T00:51:36.000Z","date":"2025-04-30","kind":"grant","planned":false,"acquired":true,"shares":9105,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F3","text":"The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) April 30, 2026, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2026."}],"balance_after":9105,"derivative":{"exercise_price":5.4,"expiration_date":"2035-04-30","underlying":"Common Stock","underlying_shares":9105},"source":{"system":"sec-edgar","filing":"0000950170-25-062216","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025062216/ownership.xml","form_type":"4"}},{"id":1162694,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":47413,"kind":"person","name":"Robinson Cari","position":1,"cik":"0002031424","reported_name":"Robinson Cari","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2025-05-02T00:51:36.000Z","date":"2025-04-30","kind":"grant","planned":false,"acquired":true,"shares":10370,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"shares","element":"transactionShares","label":"F1","text":"The reporting person was granted Restricted Stock Units (\"RSUs\") representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. Each RSU represents the right to receive one share of Common Stock upon vesting. These RSUs will vest on the earlier of (a) April 30, 2026, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2026."},{"field":"balance_after","element":"sharesOwnedFollowingTransaction","label":"F2","text":"Represents 1,876 shares of Common Stock and 10,370 RSUs."}],"balance_after":12246,"source":{"system":"sec-edgar","filing":"0000950170-25-062216","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017025062216/ownership.xml","form_type":"4"}},{"id":1431635,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":47413,"kind":"person","name":"Robinson Cari","position":1,"cik":"0002031424","reported_name":"Robinson Cari","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Stock Option (Right to Buy)","published_at":"2024-08-16T18:42:03.000Z","date":"2024-08-14","kind":"grant","planned":false,"acquired":true,"shares":1676,"price":0,"value":0.0,"ownership":{"direct":true},"footnotes":[{"field":"derivative.exercise_date","element":"exerciseDate","label":"F2","text":"The reporting person was granted options representing the remaining portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. The options will vest on the earlier of (a) May 30, 2025, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2025."}],"balance_after":1676,"derivative":{"exercise_price":23.63,"expiration_date":"2034-08-14","underlying":"Common Stock","underlying_shares":1676},"source":{"system":"sec-edgar","filing":"0000950170-24-097987","document":"ownership.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024097987/ownership.xml","form_type":"4"}},{"id":1431634,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":47413,"kind":"person","name":"Robinson Cari","position":1,"cik":"0002031424","reported_name":"Robinson Cari","relationship":{"director":true,"officer":false,"ten_percent_owner":false,"other":false}}],"security":"Common Stock","published_at":"2024-08-16T18:42:03.000Z","date":"2024-08-14","kind":"grant","planned":false,"acquired":true,"shares":1876,"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 representing a portion of the annual grant of equity for service as a non-employee director pursuant to the Issuer's Non-Employee Director Compensation Policy. These restricted shares will vest on the earlier of (a) May 30, 2025, or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2025."}],"balance_after":1876,"source":{"system":"sec-edgar","filing":"0000950170-24-097987","document":"ownership.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1145986/000095017024097987/ownership.xml","form_type":"4"}}]}