CesiumAstro
Builds software-defined phased-array payloads, satellite buses and communications systems for defense, and is building its own satellite network.
Falcon 9 launches the GPS III-SV09 mission from Cape Canaveral Space Force Station, January 2026. Photo: U.S. Space Force photo by Gwendolyn Kurzen, Public domain (U.S. government work).
Funding history
| Date | Round | Amount |
|---|---|---|
| Nov 2026 | Series D | $730M |
Why it matters
Series D at a valuation above $4.5B (Nov 2026) after a $470M Series C in February 2026; plans the 737-satellite Synchronicity constellation and a $500M Austin-area expansion.
Is CesiumAstro publicly traded?
CesiumAstro is privately held as of November 14, 2026: there is no ticker and no announced IPO. Shares are not available on public exchanges.
Information only, not investment advice.
Key figures confirmed by multiple sourcesLast verified November 14, 2026
CesiumAstro: key questions
What does CesiumAstro do?
Builds software-defined phased-array payloads, satellite buses and communications systems for defense, and is building its own satellite network.
What does CesiumAstro make?
Products named by CesiumAstro include Synchronicity.
Where is CesiumAstro based?
CesiumAstro is headquartered in Austin, Texas. It was founded in 2017.
What is CesiumAstro's valuation?
CesiumAstro was valued at $4.5B+ as of Nov 2026, after a $730M Series D (Nov 2026).
How much funding has CesiumAstro raised?
Total funding is >$1.3B, based on announced and reported rounds. Latest round: Series D, $730M, Nov 2026.
Who are CesiumAstro's investors?
Notable investors include Janus Henderson, Insight Partners, Sands Capital, Magnetar, Woven Capital, Sumitomo Corporation of Americas.
Is CesiumAstro publicly traded?
CesiumAstro is privately held as of November 14, 2026: there is no ticker and no announced IPO. Shares are not available on public exchanges.
Can you buy CesiumAstro stock?
Not on a public exchange: CesiumAstro is a private company. Shares of private companies change hands only in private transactions open to accredited investors, when the company allows it. This is not investment advice.
Sources
- satellitetoday.com/finance/2026/11/06/cesiumastro-raises-730m-series-d-to-fund-synchronici
- thenextweb.com/news/cesiumastro-730m-series-d-synchronicity-satellite-constellation
Figures come from company announcements, government sources and press reports. Spot an error? Send a correction. Nothing here is investment advice.
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