Real time Form 13D and 13G transaction reports:
- Schedule 13D must be filed within ten days after a person or an organization acquires beneficial ownership of more than 5% of a voting class of a company's equity securities.
- Due to inconsistent filing format, it is highly recommended that you read the orignal filing form.
- Shares have beem adjusted for stock split.
"Insiders might sell their shares for any number of reasons, but they buy them for only one: they think the price will rise"
- Peter Lynch
What is insider trading>>
- Peter Lynch
What is insider trading>>
| Reported DateTime | Transaction Date | Type | Company Symbol | Filed By Symbol | Shares Owned % Owned | Shares Vs. Prev Report | View |
| 2026-09-24 9:12 pm Sale | 2026-09-23 | 13D | ASPEN AEROGELS, INC ASPN | Wood River Capital, LLC | 0 0.000% | -12,280,426 (Position Closed) | Filing History |
| 2026-08-13 5:36 pm Sale | 2026-06-30 | 13G | ASPEN AEROGELS, INC ASPN | Needham Investment Management L.L.C. | 3,260,800 3.900% | -1,090,900 (-25.07%) | Filing History |
| 2026-03-26 4:09 pm Sale | 2026-03-13 | 13G | ASPEN AEROGELS, INC ASPN | The Vanguard Group | 0 0.000% | -4,133,995 (Position Closed) | Filing History |
| 2026-02-13 5:44 pm Purchase | 2025-12-31 | 13G | ASPEN AEROGELS, INC ASPN | Needham Investment Management L.L.C. | 4,351,700 5.300% | 4,351,700 (New Position) | Filing History |
| 2025-05-15 2:17 pm Unchanged | 2025-03-31 | 13G | ASPEN AEROGELS, INC ASPN | OAKTOP CAPITAL MANAGEMENT II L.P. | 4,394,525 5.350% | 0 (Unchanged) | Filing History |
| 2025-05-15 2:10 pm Purchase | 2025-03-31 | 13G | ASPEN AEROGELS, INC ASPN | OAKTOP CAPITAL MANAGEMENT II L.P. | 4,394,525 5.350% | 1,199,767 (+37.55%) | Filing History |
| 2025-02-12 09:16 am Sale | 2024-12-31 | 13G | ASPEN AEROGELS, INC ASPN | FMR LLC | 1,226,073 1.500% | -2,824,822 (-69.73%) | Filing History |
| 2024-11-12 1:22 pm Unchanged | 2024-09-30 | 13G | ASPEN AEROGELS, INC ASPN | The Vanguard Group | 4,133,995 5.360% | 0 (Unchanged) | Filing History |
| 2024-11-12 09:50 am Purchase | 2024-11-08 | 13G | ASPEN AEROGELS, INC ASPN | FMR LLC | 4,050,895 5.255% | 3,673,614 (+973.71%) | Filing History |
| 2024-11-04 11:18 am Purchase | 2024-09-30 | 13G | ASPEN AEROGELS, INC ASPN | The Vanguard Group | 4,133,995 5.360% | 4,133,995 (New Position) | Filing History |
| 2024-10-22 7:40 pm Unchanged | 2024-10-22 | 13G | ASPEN AEROGELS, INC ASPN | George Kaiser Family Foundation | 3,167,322 4.110% | 0 (Unchanged) | Filing History |
| 2024-08-19 6:13 pm Sale | 2024-08-19 | 13D | ASPEN AEROGELS, INC ASPN | Wood River Capital, LLC | 12,280,426 15.930% | -4,139,999 (-25.21%) | Filing History |
| 2024-08-02 8:31 pm Purchase | 2024-08-01 | 13D | ASPEN AEROGELS, INC ASPN | Wood River Capital, LLC | 16,420,425 20.450% | 187,732 (+1.16%) | Filing History |
| 2024-05-16 7:16 pm Sale | 2024-05-14 | 13D | ASPEN AEROGELS, INC ASPN | Wood River Capital, LLC | 16,232,693 20.300% | -2,985,965 (-15.54%) | Filing History |
| 2024-01-31 2:08 pm Purchase | 2023-12-31 | 13G | ASPEN AEROGELS, INC ASPN | BlackRock Inc. BLK | 4,054,986 5.300% | 2,531,411 (+166.15%) | Filing History |
| 2023-02-14 5:18 pm Purchase | 2022-12-31 | 13G | ASPEN AEROGELS, INC ASPN | Encompass Capital Advisors LLC | 2,974,749 4.500% | 240,675 (+8.80%) | Filing History |
| 2023-02-14 5:16 pm Purchase | 2022-12-31 | 13G | ASPEN AEROGELS, INC ASPN | OAKTOP CAPITAL MANAGEMENT II L.P. | 3,194,758 4.830% | 601,486 (+23.19%) | Filing History |
| 2023-02-03 3:28 pm Unchanged | 2022-12-31 | 13G | ASPEN AEROGELS, INC ASPN | Telemark Asset Management LLC | 1,970,000 2.980% | 0 (Unchanged) | Filing History |
| 2023-02-03 10:59 am Purchase | 2022-12-31 | 13G | ASPEN AEROGELS, INC ASPN | Telemark Asset Management LLC | 1,970,000 2.980% | 130,000 (+7.07%) | Filing History |
| 2022-12-07 11:42 am Purchase | 2022-11-28 | 13D | ASPEN AEROGELS, INC ASPN | Wood River Capital, LLC | 19,218,658 27.600% | 19,218,658 (New Position) | Filing History |