Aspen Aerogels, Inc. · NYSE:ASPN
Aspen Aerogels, Inc. shareholders
As of Jun 30, 2026, 177 institutions reported holding Aspen Aerogels, Inc., 88.5% of its shares. Largest: Kim, LLC, BlackRock and Oaktop Capital Management II, L.P. New holders, exits, insiders and big stakes, each with its filing.
| Holder | Shares | % of Aspen Aerogels, Inc. | Change | Filed |
|---|---|---|---|---|
| Kim, LLC | 12.3M | 14.8% | no change | Aug 13, 2026 |
| BlackRock | 5.28M | 6.4% | +534K | Aug 7, 2026 |
| Oaktop Capital Management II, L.P. | 5.17M | 6.2% | no change | Aug 7, 2026 |
| Vanguard | 4.74M | 5.7% | +105K | Aug 13, 2026 |
| Needham Investment Management LLC | 3.26M | 3.9% | −1.26M | Aug 14, 2026 |
| George Kaiser Family Foundation | 3.17M | 3.8% | no change | Aug 12, 2026 |
| State Street | 2.56M | 3.1% | +239K | Aug 7, 2026 |
| American Century | 2.51M | 3.0% | +1.26M | Aug 12, 2026 |
| Jacobs Levy Equity Management, Inc | 2.06M | 2.5% | +839K | Aug 14, 2026 |
| Ameriprise | 1.82M | 2.2% | +315K | Aug 14, 2026 |