Institutional Ownership
Aspen Aerogels Inc
CUSIP 04523Y105COMASPNQ1 2026
13D / 13G Filings
30
Schedule 13D/13G on record
Beneficial Filers
12
Distinct reporting persons
Largest Stake
27.6%
Max % of class reported
Institutional Holders
160
13F filers (latest quarter)
Beneficial Owners — Schedule 13D / 13G
30 filings · latest Feb 13, 2026
| # | Filed | Reporting Person | Form | % of Class | Shares | Filing |
|---|---|---|---|---|---|---|
| 1 | Feb 13, 2026 | Needham Investment Management L.L.C. | 13G | 5.3% | 4.35M | SEC |
| 2 | May 15, 2025 | Oaktop Capital Management II, L.P. | 13G/A | 5.3% | 4.39M | SEC |
| 3 | May 15, 2025 | Oaktop Capital Management II, L.P. | 13G/A | 5.3% | 4.39M | SEC |
| 4 | Feb 12, 2025 | Fmr LLC | 13G/A | 1.5% | 1.23M | SEC |
| 5 | Nov 12, 2024 | Vanguard Group Inc | 13G/A | 5.4% | 4.13M | SEC |
| 6 | Nov 12, 2024 | Fmr LLC | 13G | 5.3% | — | SEC |
| 7 | Nov 4, 2024 | Vanguard Group Inc | 13G/A | 5.4% | 4.13M | SEC |
| 8 | Oct 22, 2024 | George Kaiser Family Foundation | 13G/A | 4.1% | 3.17M | SEC |
| 9 | Aug 19, 2024 | Wood River Capital, LLC | 13D/A | 15.9% | 12.28M | SEC |
| 10 | Aug 2, 2024 | Wood River Capital, LLC | 13D/A | — | — | SEC |
20 more beneficial-ownership filings on Premium
See the full Schedule 13D/13G history for Aspen Aerogels Inc.
Unlock full historyTop Institutional Holders (13F)
Largest reported positions · latest quarter
| # | Fund | Shares | Value |
|---|---|---|---|
| 1 | Kim, LLC | 12.28M | $42.00M |
| 2 | Oaktop Capital Management II, L.P. | 5.17M | $17.68M |
| 3 | Blackrock, Inc. | 4.74M | $16.22M |
| 4 | Needham Investment Management LLC | 4.52M | $15.45M |
| 5 | George Kaiser Family Foundation | 3.17M | $10.83M |
| 6 | State Street Corp | 2.32M | $7.94M |
| 7 | Invesco Ltd. | 2.30M | $7.86M |
| 8 | Gagnon Securities LLC | 1.86M | $6.37M |
| 9 | Rice Hall James & Associates, LLC | 1.55M | $5.31M |
| 10 | Geode Capital Management, LLC | 1.54M | $5.27M |