Aspen Aerogels, Inc. (ASPN) Institutional Ownership & Insider Trading
180 institutions reported holding Aspen Aerogels, Inc. shares in 13F filings for the quarter ended 2026-06-30, according to EquiReason's reading of their SEC filings. 2 insider trades on Form 4 since 2025-10-01.
Source: SEC EDGAR filings · figures as of 2026-06-30 · read by EquiReason
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- Market cap
- 458.1M
- P/E TTM
- —
- Dividend yield
- —
- 52-week
- —
- Next earnings
- 23 Feb, in 122 days
Institutions · all 13F filers
quarter to 30 Jun 2026 · filers in both quarters180 institutions held 88.5% of the shares. Across filers that reported both quarters, shares held changed +6.0%.
Largest moves, shares (millions)
Institutional flow by quarter
net shares added or trimmed, millions · filers in both quarters| Quarter | Holders | Shares held, M | Change | Increased | New | Decreased | Closed |
|---|---|---|---|---|---|---|---|
| Jun 26 | 180 | 73 | +6.0% | 61 | 35 | 44 | 18 |
| Mar 26 | 165 | 69 | -0.4% | 40 | 28 | 55 | 44 |
| Dec 25 | 177 | 70 | -3.7% | 43 | 35 | 57 | 53 |
| Sep 25 | 199 | 73 | +1.3% | 57 | 41 | 52 | 26 |
| Jun 25 | 182 | 72 | +0.4% | 71 | 23 | 51 | 60 |
| Mar 25 | 219 | 71 | -1.2% | 79 | 39 | 58 | 42 |
| Dec 24 | 223 | 73 | +4.8% | 93 | 47 | 41 | 63 |
| Sep 24 | 239 | 69 | -3.6% | 69 | 56 | 61 | 39 |
Aspen Aerogels, Inc. — questions
- Who owns Aspen Aerogels, Inc. stock?
- 180 institutions reported Aspen Aerogels, Inc. shares in 13F filings for the quarter ended 2026-06-30. The largest: KIM, LLC (14.8%), BlackRock, Inc. (6.4%), OAKTOP CAPITAL MANAGEMENT II, L.P. (6.2%).
- Are Aspen Aerogels, Inc. insiders buying or selling?
- 2 insider trades on Form 4 since 2025-10-01; the full list, with dates, people and plan status, is on this page.
Every figure on this page comes from Aspen Aerogels, Inc.'s own SEC filings — see them on SEC EDGAR. Price data is licensed and shown only inside the product.
How these figures are read: methodology · EquiReason.