| Name | Relationship | Address | Signature | Signature date | CIK |
|---|---|---|---|---|---|
| Young Donald R | President and CEO, Director | C/O ASPEN AEROGELS, INC.,, 30 FORBES ROAD, BLDG B, NORTHBOROUGH | /s/ Virginia H. Johnson, Attorney-in-Fact | 12 May 2025 | 0001610257 |
| Type | Sym | Class | Transaction | Value $ | Shares | Change % | * Price $ | Shares After | Date | Ownership | Footnotes |
|---|---|---|---|---|---|---|---|---|---|---|---|
| transaction | ASPN | Common Stock | Purchase | $107,000 | +20,000 | +3.8% | $5.35 | 550,856 | 12 May 2025 | Direct | F1 |
| Id | Content |
|---|---|
| F1 | Represents 471,151 shares of Common Stock and 79,705 RSUs. |