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CesiumAstro

Austin, TX · Founded 2017 · Privately Held (backing)

Developer of a space communication system designed to address a diverse range of commercial and defense applications. CesiumAstro is based in Austin, TX and was founded in 2017. Its last reported valuation was $765 million in Jul 2024. It has raised $626 million across 7 recorded rounds; the latest was a $271 million later-stage round in Jul 2025.

Last reported valuation
$765.0M
Oct 2026
Priced at
—
Total raised
$626.2M
Last round
Later Stage VC
Jul 2025

CesiumAstro key facts

as of Oct 2026
  • Developer of a space communication system designed to address a diverse range of commercial and defense applications.
  • CesiumAstro is valued at approximately $765.0M as of Oct 2026 (last reported valuation).
  • It has raised $626.2M across 7 recorded rounds; the latest was Later Stage VC ($270.5M) in Jul 2025.
  • Notable investors include Alumni Ventures, United States Department of War, Kleiner Perkins, EDBI, National Aeronautics and Space Administration — 26 tracked in total.
  • CesiumAstro has filed 8 Form Ds with the SEC since 2017, most recently Feb 2024 ($30.0M sold to 2 investors).
  • Status: Privately Held (backing).
Last reported valuation
LOW confidence
$765.0M

CesiumAstro's last reported valuation, Jul 2024. Nothing priced has surfaced since.

set by last reported valuationas of Oct 2026question about this number?
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CesiumAstro funding rounds

7 rounds
Jul 2025Later Stage VC$270.5MSEC filing▮
Jan 2024Early Stage VC$30.0MSEC filing▮
Jan 2023Seed Round$2.1MSEC filing▮
Feb 2022Later Stage VC$60.0MSEC filing▮
Oct 2020Early Stage VC$15.0MSEC filing▮
Full funding history →

CesiumAstro valuation

CesiumAstro's last reported valuation was $765 million in Jul 2024. No priced round, secondary trade or fund mark has surfaced since.

How much has CesiumAstro raised?

CesiumAstro has raised $626 million across 7 recorded rounds since 2017. The largest was an $8.5 million early-stage round in Jan 2019; the most recent was a $271 million later-stage round in Jul 2025.

CesiumAstro has filed 8 Form Ds with the SEC since 2017, most recently in Feb 2024 ($30 million sold to 2 investors).

CesiumAstro investors

26 investors are on record for CesiumAstro, including Alumni Ventures, United States Department of War, Kleiner Perkins and EDBI. By type, the record holds 6 venture capital firms. The later-stage round in Jul 2025 drew 37 investors.

About CesiumAstro

Developer of a space communication system designed to address a diverse range of commercial and defense applications. The company's system supports fast beam hopping, beam-weight storage, and the ability to run sequences of different beam patterns, enabling clients to have complete mission-specific payload configurations.

Sector
Information Technology
HQ
Austin, TX, United States
Founded
2017
Employees
200
Ownership
Privately Held (backing)

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