United States · 
Who invested in Exostellar?
Exostellar's investors include National Science Foundation, Walden International, Celesta Capital, Prosperity7 and Launch NY, and 3 more on record. Prosperity7 led its latest round.
20242025
$15MSeries A$11MSeries A
United States · Series A startup
Who invested in Exostellar
Funding summaryUpdated 26 Oct 2026
$26Mraised across 2 rounds since 2023, from 2 sources
$15MSeries A$11MSeries A
- Latest round
- Series A, $11MFeb 2025
- Led by
- Prosperity7
- Biggest round
- $15MSeries A · Sept 2023
- Investors
- 8 (1 led)
The funding story
Each circle is a round, placed by date and sized by amount. The line above is the running total.
- First round
- Series A, $15M Sept 2023
- Biggest round
- $15M Series A · Sept 2023
- Between rounds
- 17 months from the last two
The rounds
- Feb 2025Series A$11M4 new3 returning
- Prosperity7Lead
National Science Foundation- Walden International
Celesta Capital
Cambium Capital
Candou Ventures- AI Capital Partners
Reported by Prosperity7 Ventures
- Sept 2023Series A$15M4 new
Source recorded
Who was in which round
The busiest backers across the latest rounds. A filled square is a round they joined; a dark one, a round they led.
Everyone who backed them
Missing a round, or an investor who was in one? Tell us.
Also claim to have backed them
These 2 firms list Exostellar as a portfolio company on their own websites, but no report of a round names them. They are the firms' own claims, kept apart from the rounds above.
Quick answers about Exostellar
How much has Exostellar raised?
Exostellar has raised $26M across 2 rounds since 2023.
When did Exostellar last raise?
Exostellar's most recent round was a Series A of $11M in Feb 2025, led by Prosperity7.
What was Exostellar's biggest round?
Exostellar's largest round on record is $15M (Series A), in Sept 2023.
Who backed Exostellar first?
Exostellar's first round on record, in Sept 2023, was backed by National Science Foundation, Walden International and Launch NY and 1 others.
What stage is Exostellar at?
Exostellar's latest named round is a Series A, in Feb 2025.
Where is Exostellar based?
Exostellar is based in the United States.
Who led Exostellar's rounds?
Prosperity7 led the Series A in 2025.
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