ASPN insider buying and SEC filings, explained
Aspen Aerogels Inc. · CIK 1145986
Tracked: Forms 3/4/5, 8-K, NT · All filings on sec.gov
Company profile
- Exchanges
- NYSE
- Industry (SIC)
- Wholesale-Lumber & Other Construction Materials
- State of incorporation
- DE
- Fiscal year end
- Dec 31
Insider activity in the last 12 months
Bought
$0
Insiders who bought
0
Sold (not marked 10b5-1)
$58.1M
Planned sales (10b5-1)
$184K
Insider purchases and sales, last 12 months
| Traded | Type | What was filed | Source |
|---|---|---|---|
| Sep 23, 2026 | Sale | Koch, Inc. (10% owner) sold 12,280,426 shares at $4.73 ($58.1M). Holdings down 100% to 0 shares. Not marked as a 10b5-1 plan trade. Filed jointly with 1 other reporting owner. | SEC filing Filed Sep 24, 2026 |
| Nov 13, 2025 | Planned (10b5-1) | Donald R Young (CEO and Director) sold 56,845 shares at $3.23 ($184K), marked as a 10b5-1 plan trade. Holdings down 10% to 494,011 shares. | SEC filing Filed Nov 14, 2025 |
18 routine transactions (such as grants, option exercises or tax withholding) are not listed.
Cluster buys
No cluster buys in the last 12 months.
Red flags
No red flags in the last 12 months.
Key events
No key events in the last 12 months.
8-K filings, last 12 months
No 8-K filings in the last 12 months.
Red flags are objective triggers only: the item or form filed, never an opinion.
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