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(\"RCP\") and Reservoir Capital Master Fund, L.P. (\"RCMF\") may be deemed to be beneficially owned by Craig A. Huff and Daniel Stern, who are the senior managing members (the \"Reservoir Members\") of RCGM, LLC (\"RCGM\"). RCGM is the managing member of Reservoir Capital Group, L.L.C. (\"RCG\"), which is the general partner of Reservoir Capital Partners (Cayman), L.P. (\"RCP Cayman\"), which is the sole member of RCP GP, LLC (\"RCP GP\"), and which is the general partner of RCP. RCG is the general partner of RCMF. Each of the Reservoir Members, RCGM, RCG, RCP Cayman and RCP GP disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. 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The options will vest on the earlier of (a) June 14, 2018 or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2018."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Pursuant to an arrangement between Mr. Huff, Reservoir Capital Partners, L.P. (\"RCP\") and Reservoir Capital Master Fund, L.P. (\"RCMF\") (collectively, the \"Reservoir Funds\"), such shares and options are held by him solely as a nominee for the Reservoir Funds and he is required to transfer such shares and the shares underlying such options to the applicable Reservoir Funds as soon as practicable after such shares can be transferred without restrictions. Such shares and options are included as directly beneficially owned by Mr. Huff, but may also be deemed to be beneficially owned by the other Reporting Persons as a result of such arrangements. Each of the Reporting Persons disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein."}],"balance_after":17019,"derivative":{"exercise_price":4.15,"expiration_date":"2027-06-14","underlying":"Common Stock","underlying_shares":17019},"source":{"system":"sec-edgar","filing":"0001209191-17-040492","document":"doc4.xml","document_sequence":1,"table":"derivative","row_type":"transaction","position":4,"url":"https://www.sec.gov/Archives/edgar/data/1091555/000120919117040492/doc4.xml","form_type":"4"}},{"id":4279515,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":41115,"kind":"person","name":"HUFF CRAIG A","position":1,"cik":"0001241947","reported_name":"HUFF CRAIG A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171465,"kind":"organization","name":"RESERVOIR CAPITAL PARTNERS LP","position":2,"cik":"0001091348","reported_name":"RESERVOIR CAPITAL PARTNERS LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171466,"kind":"organization","name":"RESERVOIR CAPITAL MASTER FUND LP","position":3,"cik":"0001137467","reported_name":"RESERVOIR CAPITAL MASTER FUND LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171467,"kind":"organization","name":"RCGM LLC","position":4,"cik":"0001091555","reported_name":"RCGM LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171468,"kind":"organization","name":"RESERVOIR CAPITAL GROUP LLC","position":5,"cik":"0001137465","reported_name":"RESERVOIR CAPITAL GROUP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171469,"kind":"organization","name":"RESERVOIR CAPITAL PARTNERS CAYMAN LP","position":6,"cik":"0001351308","reported_name":"RESERVOIR CAPITAL PARTNERS CAYMAN LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171470,"kind":"organization","name":"RCP GP, LLC","position":7,"cik":"0001610297","reported_name":"RCP GP, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":86972,"kind":"person","name":"STERN DANIEL H","position":8,"cik":"0001105604","reported_name":"STERN DANIEL H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2017-06-16T16:15:59.000Z","date":"2017-06-14","kind":"grant","acquired":true,"shares":12289,"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) June 14, 2018 or (b) the day prior to the Issuer's annual meeting of stockholders to be held in 2018."},{"field":"ownership.direct","element":"directOrIndirectOwnership","label":"F2","text":"Pursuant to an arrangement between Mr. Huff, Reservoir Capital Partners, L.P. (\"RCP\") and Reservoir Capital Master Fund, L.P. (\"RCMF\") (collectively, the \"Reservoir Funds\"), such shares and options are held by him solely as a nominee for the Reservoir Funds and he is required to transfer such shares and the shares underlying such options to the applicable Reservoir Funds as soon as practicable after such shares can be transferred without restrictions. Such shares and options are included as directly beneficially owned by Mr. Huff, but may also be deemed to be beneficially owned by the other Reporting Persons as a result of such arrangements. Each of the Reporting Persons disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein."}],"balance_after":23025,"source":{"system":"sec-edgar","filing":"0001209191-17-040492","document":"doc4.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1091555/000120919117040492/doc4.xml","form_type":"4"}},{"id":4561089,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":41115,"kind":"person","name":"HUFF CRAIG A","position":1,"cik":"0001241947","reported_name":"HUFF CRAIG A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171465,"kind":"organization","name":"RESERVOIR CAPITAL PARTNERS LP","position":2,"cik":"0001091348","reported_name":"RESERVOIR CAPITAL PARTNERS LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171466,"kind":"organization","name":"RESERVOIR CAPITAL MASTER FUND LP","position":3,"cik":"0001137467","reported_name":"RESERVOIR CAPITAL MASTER FUND LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":86972,"kind":"person","name":"STERN DANIEL H","position":4,"cik":"0001105604","reported_name":"STERN DANIEL H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171467,"kind":"organization","name":"RCGM LLC","position":5,"cik":"0001091555","reported_name":"RCGM LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171468,"kind":"organization","name":"RESERVOIR CAPITAL GROUP LLC","position":6,"cik":"0001137465","reported_name":"RESERVOIR CAPITAL GROUP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171469,"kind":"organization","name":"RESERVOIR CAPITAL PARTNERS CAYMAN LP","position":7,"cik":"0001351308","reported_name":"RESERVOIR CAPITAL PARTNERS CAYMAN LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171470,"kind":"organization","name":"RCP GP, LLC","position":8,"cik":"0001610297","reported_name":"RCP GP, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2016-11-10T17:01:54.000Z","date":"2016-11-08","kind":"sale","acquired":false,"shares":19306,"price":3.9484,"value":76227.8104,"ownership":{"direct":false,"nature":"Held by Reservoir Capital Partners, L.P."},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The securities held by Reservoir Capital Partners, L.P. (\"RCP\") and Reservoir Capital Master Fund, L.P. (\"RCMF\") may be deemed to be beneficially owned by Craig A. Huff and Daniel Stern, who are the senior managing members (the \"Reservoir Members\") of RCGM, LLC (\"RCGM\"). RCGM is the managing member of Reservoir Capital Group, L.L.C. (\"RCG\"), which is the general partner of Reservoir Capital Partners (Cayman), L.P. (\"RCP Cayman\"), which is the sole member of RCP GP, LLC (\"RCP GP\"), and which is the general partner of RCP. RCG is the general partner of RCMF. Each of the Reservoir Members, RCGM, RCG, RCP Cayman and RCP GP disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. Amounts in Column 5 of Table 1 reflect changes in form of beneficial ownership that have occurred since the most recent prior statement filed by the Reporting Persons."}],"balance_after":2634258,"source":{"system":"sec-edgar","filing":"0000950142-16-004697","document":"es1601114_4-aspen.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":2,"url":"https://www.sec.gov/Archives/edgar/data/1091555/000095014216004697/es1601114_4-aspen.xml","form_type":"4"}},{"id":4561088,"issuer":{"id":5645,"kind":"organization","name":"ASPEN AEROGELS INC","symbol":"ASPN"},"owners":[{"id":41115,"kind":"person","name":"HUFF CRAIG A","position":1,"cik":"0001241947","reported_name":"HUFF CRAIG A","relationship":{"director":true,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171465,"kind":"organization","name":"RESERVOIR CAPITAL PARTNERS LP","position":2,"cik":"0001091348","reported_name":"RESERVOIR CAPITAL PARTNERS LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171466,"kind":"organization","name":"RESERVOIR CAPITAL MASTER FUND LP","position":3,"cik":"0001137467","reported_name":"RESERVOIR CAPITAL MASTER FUND LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":86972,"kind":"person","name":"STERN DANIEL H","position":4,"cik":"0001105604","reported_name":"STERN DANIEL H","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171467,"kind":"organization","name":"RCGM LLC","position":5,"cik":"0001091555","reported_name":"RCGM LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171468,"kind":"organization","name":"RESERVOIR CAPITAL GROUP LLC","position":6,"cik":"0001137465","reported_name":"RESERVOIR CAPITAL GROUP LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171469,"kind":"organization","name":"RESERVOIR CAPITAL PARTNERS CAYMAN LP","position":7,"cik":"0001351308","reported_name":"RESERVOIR CAPITAL PARTNERS CAYMAN LP","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}},{"id":171470,"kind":"organization","name":"RCP GP, LLC","position":8,"cik":"0001610297","reported_name":"RCP GP, LLC","relationship":{"director":false,"officer":false,"ten_percent_owner":true,"other":false}}],"security":"Common Stock","published_at":"2016-11-10T17:01:54.000Z","date":"2016-11-08","kind":"sale","acquired":false,"shares":816,"price":3.9484,"value":3221.8944,"ownership":{"direct":false,"nature":"Held by Reservoir Capital Master Fund, L.P."},"footnotes":[{"field":"ownership.nature","element":"natureOfOwnership","label":"F1","text":"The securities held by Reservoir Capital Partners, L.P. (\"RCP\") and Reservoir Capital Master Fund, L.P. (\"RCMF\") may be deemed to be beneficially owned by Craig A. Huff and Daniel Stern, who are the senior managing members (the \"Reservoir Members\") of RCGM, LLC (\"RCGM\"). RCGM is the managing member of Reservoir Capital Group, L.L.C. (\"RCG\"), which is the general partner of Reservoir Capital Partners (Cayman), L.P. (\"RCP Cayman\"), which is the sole member of RCP GP, LLC (\"RCP GP\"), and which is the general partner of RCP. RCG is the general partner of RCMF. Each of the Reservoir Members, RCGM, RCG, RCP Cayman and RCP GP disclaims beneficial ownership of the reported securities except to the extent of his or its pecuniary interest therein. Amounts in Column 5 of Table 1 reflect changes in form of beneficial ownership that have occurred since the most recent prior statement filed by the Reporting Persons."}],"balance_after":250987,"source":{"system":"sec-edgar","filing":"0000950142-16-004697","document":"es1601114_4-aspen.xml","document_sequence":1,"table":"nonDerivative","row_type":"transaction","position":1,"url":"https://www.sec.gov/Archives/edgar/data/1091555/000095014216004697/es1601114_4-aspen.xml","form_type":"4"}}]}