Aspen Aerogels, Inc.
A maker of ultra-lightweight aerogel insulation, the world's airiest solid material, Aspen Aerogels spins it into thin flexible blankets like Pyrogel and Cryogel that keep pipes, tanks, and industrial equipment at refineries and power plants from losing heat. The technology grew out of 1990s NASA work to manage cryogenic rocket fuel, and the company spun off from Aspen Systems in 2001, taking part of its parent's name and adding "Aerogels." Fun fact: its insulation is so light it was once called "frozen smoke."
Sold 3.50M
Granted 921.9K · Bought 20.0K · Sold 553.9K
Granted 146.2K · Sold 55.2K
Granted 22.6K · Bought 57.5K
Granted 37.4K
Granted 1.9K
Granted 90.2K · Sold 48.5K
Granted 65.6K
Granted 67.2K
Granted 1.9K
Granted 73.2K · Sold 32.5K
Granted 52.7K · Sold 20.0K
Granted 34.3K
Granted 46.5K
Granted 22.6K
Granted 27.1K · Sold 4.5K
Granted 22.6K
Granted 24.4K · Sold 6.4K
| Insider | Stake change | Holds now | Granted / vested | Bought | Sold |
|---|---|---|---|---|---|
| Koch Industries Inc +1 co-filer10% owner · 1 transaction | -22.2% | 12.28Mas of May 2024 | — | — | 3.50M |
| Young Donald RPresident and CEO, Director · 23 transactions | -2.9% | 637.8K | 921.9K | 20.0K | 553.9K |
| Whitaker Corby CChief Commercial Officer · 14 transactions | +14.3% | 205.3K | 146.2K | — | 55.2K |
| Mitchell Steven RDirector · 5 transactions | +104.5% | 156.9K | 22.6K | 57.5K | — |
| Noglows William PDirector · 6 transactions | — | 144.2K | 37.4K | — | — |
| Noetzel Mark LDirector · 1 transaction | +1.6% | 121.2Kas of May 2024 | 1.9K | — | — |
| Landes GreggChief Operating Officer · 15 transactions | -18.7% | 102.9K | 90.2K | — | 48.5K |
| Thoele Grant DouglasCFO & Treasurer · 4 transactions | — | 77.7K | 65.6K | — | — |
| Deegan Glenn E.CAO, GC & Corp Secretary · 2 transactions | — | 67.2K | 67.2K | — | — |
| Blalock RebeccaDirector · 1 transaction | +3.1% | 63.2Kas of May 2024 | 1.9K | — | — |
| Rodriguez Ricardo C.CFO & Treasurer · 16 transactions | -24.5% | 57.3Kas of Mar 2025 | 73.2K | — | 32.5K |
| Schilling Keith LSVP, Technology · 13 transactions | -35.5% | 49.8Kas of Mar 2025 | 52.7K | — | 20.0K |
| Johnson VirginiaCLO, GC, and Secretary · 8 transactions | -41.1% | 44.5Kas of May 2025 | 34.3K | — | — |
| Pittman StephanieChief Human Resources Officer · 6 transactions | — | 42.3K | 46.5K | — | — |
| Sweetnam James EDirector · 3 transactions | +165.4% | 36.3K | 22.6K | — | — |
| Kool KathleenDirector · 5 transactions | +193.7% | 34.3K | 27.1K | — | 4.5K |
| Robinson CariDirector · 3 transactions | — | 22.6K | 22.6K | — | — |
| Daniel Santhosh PChief Accounting Officer · 9 transactions | — | 15.3K | 24.4K | — | 6.4K |
Select a row to see that insider’s individual transactions. Sum of the holdings confirmed in the 12 months before this insider's last filing. A Form 4 reports a holding per line — held directly, or through a named trust, partnership or foundation, and in each share class separately — never a person’s total. Lines not restated in that time are left out and shown apart: an active filer restates what they still hold, so a line they did not restate is more often an entity since renamed, whose shares a successor line reports too. An amber marker means some were left out.
Net open-market activity over the last 3 years: -4.14M shares. Grants, option exercises and tax withholding are excluded — they are compensation mechanics, not decisions to buy or sell.