ASPN - CIK 0001145986
ASPEN AEROGELS INC has filed 857 documents with the SEC between 2002 and 2026. The most frequent type is insider trade (407 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| Major company event | 8-K | 2026-05-18 | 2026-05-12 |
| Insider trade | 4 | 2026-05-14 | 2026-05-13 |
| Insider trade | 4 | 2026-05-14 | 2026-05-13 |
| Insider trade | 4 | 2026-05-14 | 2026-05-13 |
| Insider trade | 4 | 2026-05-14 | 2026-05-13 |
| Insider trade | 4 | 2026-05-14 | 2026-05-13 |
| Quarterly report | 10-Q | 2026-05-08 | 2026-03-31 |
| Major company event | 8-K | 2026-05-07 | 2026-05-07 |
| Major company event | 8-K | 2026-04-21 | 2026-04-21 |
| Annual report to shareholders | ARS | 2026-03-27 | 2025-12-31 |
| Proxy materials | DEFA14A | 2026-03-27 | - |
| Proxy statement | DEF 14A | 2026-03-27 | 2026-05-13 |
| SCHEDULE 13G/A | - | 2026-03-26 | - |
| Annual report (amended) | 10-K/A | 2026-03-23 | 2025-12-31 |
| PRE 14A | - | 2026-03-13 | 2026-05-13 |
| Annual report | 10-K | 2026-03-13 | 2025-12-31 |
| Insider trade | 4 | 2026-03-10 | 2026-03-08 |
| Insider trade | 4 | 2026-03-10 | 2026-03-08 |
| Insider trade | 4 | 2026-03-10 | 2026-03-08 |
| Insider trade | 4 | 2026-03-10 | 2026-03-08 |
| Insider trade | 4 | 2026-03-06 | 2026-03-04 |
| Insider trade | 4 | 2026-03-06 | 2026-03-04 |
| Insider trade | 4 | 2026-03-06 | 2026-03-04 |
| Insider trade | 4 | 2026-03-06 | 2026-03-04 |
| Insider trade | 4 | 2026-03-06 | 2026-03-05 |
| Insider trade | 4 | 2026-03-06 | 2026-03-04 |
| Major company event | 8-K | 2026-02-25 | 2026-02-25 |
| SCHEDULE 13G | - | 2026-02-13 | - |
| Insider trade (amended) | 4/A | 2025-12-19 | 2025-10-01 |
| 3/A | - | 2025-12-19 | 2025-10-01 |
| Major company event | 8-K | 2025-12-18 | 2025-12-16 |
| Insider trade | 4 | 2025-11-14 | 2025-11-13 |
| Insider sale notice | 144 | 2025-11-13 | - |
| Quarterly report | 10-Q | 2025-11-06 | 2025-09-30 |
| Major company event | 8-K | 2025-11-06 | 2025-11-06 |
| Insider trade | 4 | 2025-10-03 | 2025-10-01 |
| Insider trade | 4 | 2025-10-02 | 2025-09-30 |
| New insider ownership | 3 | 2025-10-02 | 2025-10-01 |
| New insider ownership | 3 | 2025-09-25 | 2025-09-22 |
| Insider trade | 4 | 2025-09-15 | 2025-09-13 |
| Major company event | 8-K | 2025-09-11 | 2025-09-05 |
| Insider trade | 4 | 2025-09-08 | 2025-09-05 |
| Insider trade | 4 | 2025-08-13 | 2025-08-12 |
| Insider sale notice | 144 | 2025-08-12 | - |
| Quarterly report | 10-Q | 2025-08-07 | 2025-06-30 |
| Major company event | 8-K | 2025-08-07 | 2025-08-07 |
| Insider trade | 4 | 2025-05-27 | 2025-05-23 |
| SCHEDULE 13G/A | - | 2025-05-15 | - |
| SCHEDULE 13G/A | - | 2025-05-15 | - |
| Insider trade | 4 | 2025-05-12 | 2025-05-12 |