// company-profile
Aspen Aerogels Inc
ASPNExchangeNYSESectorWholesale-Lumber & Other Construction MaterialsInc.DEFilings127Insiders21
// api This Aspen Aerogels Inc insider-trading data is served live by the Form4API insider trading API. Get the same data via API.
// activity-summary
No insider transactions in the last 30 days.
// 90-day insight
Over the last 90 days, Aspen Aerogels Inc insiders bought $0 across 10 transactions with no open-market sales.
- Most active insider: SWEETNAM JAMES E with 2 transactions totaling $0.
Activity skews bullish — buys outpace sales.
Institutional Ownership
Top 13F-HR holders of Aspen Aerogels Inc as of 2026-03-31
Total reported AUM
$226.9M
QoQ change
+20.3%
Reporting period
2026-03-31
#1
KIM, LLC
CIK 1888968
$42.0M
12.3M shares
#2
OAKTOP CAPITAL MANAGEMENT II, L.P.
CIK 1550660
$17.7M
5.2M shares
#3
VANGUARD CAPITAL MANAGEMENT LLC
CIK 2100119
$11.8M
3.4M shares
Data source: SEC Form 13F-HR filings. Joined with insider activity above — see who's loading up institutionally while insiders are trading. Full 13F-HR API →
Insider Transactions
Sourced from SEC EDGAR Form 4 filings. Updated hourly.
| Date | Insider | Company | Type | Shares | Price | Value |
|---|---|---|---|---|---|---|
| May 13, 2026 | SWEETNAM JAMES E | ASPN | Award | 10,370 | $0.00 | $0K |
| May 13, 2026 | Kool Kathleen | ASPN | Award | 10,370 | $0.00 | $0K |
| May 13, 2026 | Mitchell Steven R | ASPN | Award | 10,370 | $0.00 | $0K |
| May 13, 2026 | SWEETNAM JAMES E | ASPN | Award | 8,706 | $0.00 | $0K |
| May 13, 2026 | Robinson Cari | ASPN | Award | 8,706 | $0.00 | $0K |
45 more transactions hidden
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