Nano-C Inc
Other Technology · Westwood, Massachusetts
Nano-C Inc is a other technology company based in Westwood, Massachusetts. It has reported $71.0 million raised across 12 Form D filings with the SEC, most recently in 2025.
Nano-C offers engineered high-performance materials for solar, semiconductor, and battery applications, including nanostructured carbon-based solutions.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2025-08-27 | — | $32.5M | $71.0M | SEC Form D | |
| 2024-03-05 | — | $2.0M | $38.5M | SEC Form D | |
| 2022-08-24 | — | $1.0M | $36.5M | SEC Form D | |
| 2022-05-18 | — | $660K | $35.5M | SEC Form D | |
| 2021-09-24 | — | $8.5M | $34.8M | SEC Form D | |
| 2020-07-20 | —+1 amd | $5.1M | $26.3M | SEC Form D | |
| 2018-07-27 | —+3 amd | $9.8M | $21.3M | SEC Form D | |
| 2018-04-17 | — | $11.5M | $11.5M | 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.