Aspen Aerogels Inc
Other Technology · Northborough, Massachusetts
Aspen Aerogels Inc is a other technology company based in Northborough, Massachusetts. It has raised at least $322.8 million across 3 known rounds, of which $225.0 million was reported to the SEC on 3 Form D filings, most recently in 2022.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2022-04-06 | — | $50.0M | $322.8M | SEC Form D | |
| 2022-03-03 | — | $100.0M | $272.8M | SEC Form D | |
| 2021-07-01 | — | $75.0M | $172.8M | SEC Form D | |
| 2013-04-11 | — | $12.0M | $97.8M | SEC Form D | |
| 2012-06-26 | —+1 amd | $20.1M | $85.9M | SEC Form D | |
| 2011-12-21 | —+1 amd | $15.8M | $65.8M | SEC Form D | |
| 2011-06-15 | —+1 amd | $30.0M | $50.0M | SEC Form D | |
| 2010-10-07 | — | $20.0M | $20.0M | SEC Form D |
SEC rows are Form D filings, where the amount is what was actually sold and amendments update a round rather than adding one. Press rows are split between company-issued releases or wires and editorial or third-party coverage. The total is therefore a floor: a round nobody reported is a round we cannot see. A buyout or control change appears in the timeline but is never added to the total: that money goes to shareholders, not into the company.
Form D is the notice a company files with the SEC when it sells securities without registering them. It reports the amount sold, not a valuation. Figures here are what the filing says. Where a filing is silent, the field is left blank rather than estimated. “Total raised” adds press-reported rounds that never appear in a filing, so it is a floor rather than an audited sum: press amounts are the figures the company announced, and a round nobody reported is a round we cannot see.