🕵️ Aspen Aerogels Inc ($ASPN)
SEC insider & ownership activity, last 12 months · CIK 1145986 · every row links its SEC filing
Over the last 12 months insiders sold $184K with no open-market buying against it. Donald Young sold $184K through a 10b5-1 trading plan in 1 lots (Nov). 1 planned sale is pending, the largest $35K (Santhosh P. Daniel). No red-flag 8-Ks in the window.
Monthly net open-market insider flow, last 12 months (up = net buying)
Insider flow
0 buyers, $0 (0 lots) · 1 seller, $184K (1 lots)
| Insider | Buys | Bought | Sells | Sold | Last |
|---|---|---|---|---|---|
| Donald Young | 0 | – | 1 | $184K | Nov 13, 2025 |
5%+ holders
| Holder | Stake | Class | Schedule | Event | |
|---|---|---|---|---|---|
| Oaktop Capital Management II, L.P. | 5.3% | 13G | May 15, 2025 | filing ↗ | |
| Needham Investment Management L.L.C. | 5.3% | 13G | Feb 13, 2026 | filing ↗ | |
| Needham Asset Management, LLC | 5.3% | 13G | Feb 13, 2026 | filing ↗ | |
| George A. Needham | 5.3% | 13G | Feb 13, 2026 | filing ↗ |
Planned insider sales (Form 144)
| Seller | Planned | Approx. sale date | |
|---|---|---|---|
| Santhosh P. Daniel | $35K | Aug 10, 2026 | filing ↗ |
| Donald Young | $195K | Nov 13, 2025 | filing ↗ |
Material events (8-K)
| Item | Event date | |
|---|---|---|
| Reg FD disclosure (7.01) | Sep 15, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Sep 15, 2026 | filing ↗ |
| Earnings (2.02) | Aug 6, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Aug 6, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Aug 6, 2026 | filing ↗ |
| Officer/director changes (5.02) | May 12, 2026 | filing ↗ |
| Shareholder vote (5.07) | May 12, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 12, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 12, 2026 | filing ↗ |
| Earnings (2.02) | May 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | May 7, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | May 7, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Apr 21, 2026 | filing ↗ |
| Other events (8.01) | Apr 21, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Apr 21, 2026 | filing ↗ |
| Earnings (2.02) | Feb 25, 2026 | filing ↗ |
| Reg FD disclosure (7.01) | Feb 25, 2026 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Feb 25, 2026 | filing ↗ |
| Material agreement (1.01) | Dec 16, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Dec 16, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Dec 16, 2025 | filing ↗ |
| Earnings (2.02) | Nov 6, 2025 | filing ↗ |
| Reg FD disclosure (7.01) | Nov 6, 2025 | filing ↗ |
| Financial Statements and Exhibits (9.01) | Nov 6, 2025 | filing ↗ |