ASPEN AEROGELS, INC. Auditor
The independent registered public accounting firm that signed the audit report in each annual report on Form 10-K, newest first. PCAOB firm ID and the internal-control attestation are as tagged on the cover from fiscal 2021; earlier rows come from the signed report text.
- 2026-03-23: Fiscal year end 2025-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location Boston, MA, United States of America.
- 2026-03-13: Fiscal year end 2025-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location Boston, MA, United States of America.
- 2025-02-27: Fiscal year end 2024-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location Boston, MA, United States of America.
- 2024-03-07: Fiscal year end 2023-12-31; Auditor KPMG LLP; PCAOB firm ID 185; Location Boston, MA, United States of America.
| Filed | Fiscal year end | Auditor | PCAOB firm ID | Location | Internal-control attestation |
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| 2026-03-23 | 2025-12-31 | KPMG LLP | 185 | Boston, MA, United States of America | Yes |
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| 2026-03-13 | 2025-12-31 | KPMG LLP | 185 | Boston, MA, United States of America | Yes |
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| 2025-02-27 | 2024-12-31 | KPMG LLP | 185 | Boston, MA, United States of America | Yes |
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| 2024-03-07 | 2023-12-31 | KPMG LLP | 185 | Boston, MA, United States of America | Yes |
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| 2023-03-16 | 2022-12-31 | KPMG LLP | 185 | Hartford, CT, United States of America | Yes |
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| 2022-03-01 | 2021-12-31 | KPMG LLP | 185 | Hartford, CT, United States of America | Yes |
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| 2021-03-12 | 2020-12-31 | KPMG LLP | | Hartford, Connecticut | Yes |
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| 2020-03-06 | 2019-12-31 | KPMG LLP | | Hartford, Connecticut | |
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| 2019-03-08 | 2018-12-31 | KPMG LLP | | Boston, Massachusetts | |
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| 2018-03-01 | 2017-12-31 | KPMG LLP | | Boston, Massachusetts | |
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| 2017-03-02 | 2016-12-31 | KPMG LLP | | Boston, Massachusetts | |
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| 2016-03-04 | 2015-12-31 | KPMG LLP | | Boston, Massachusetts | |
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| 2015-03-13 | 2014-12-31 | KPMG LLP | | Boston, Massachusetts | |
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