Cesiumastro Inc.
Other Technology · Austin, Texas
Cesiumastro Inc. is a other technology company based in Austin, Texas, incorporated in 2022. It has raised at least $387.9 million across 8 known rounds, of which $117.3 million was reported to the SEC on 8 Form D filings, most recently in 2024.
CesiumAstro delivers scalable satellites, terminals, and software-defined systems for the missions that matter—built for performance, ready to deploy.
| Date | Round | Amount | Raised to date | Lead investor | Source |
|---|---|---|---|---|---|
| 2026-06-09 | — | $270.5M | $387.9M | SEC Form D | |
| 2024-02-13 | — | $30.0M | $117.3M | SEC Form D | |
| 2023-01-27 | — | $2.1M | $87.3M | SEC Form D | |
| 2022-03-02 | — | $60.0M | $85.2M | SEC Form D | |
| 2020-10-22 | —+1 amd | $15.0M | $25.2M | SEC Form D | |
| 2019-01-31 | — | $8.5M | $10.2M | SEC Form D | |
| 2017-05-25 | —+1 amd | $1.8M | $1.8M | 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.
Firms whose own published portfolio pages list this 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.