# Exostellar funding: rounds and investors > Exostellar has raised $26M across 2 rounds since 2023. Investors include National Science Foundation, Walden International and Celesta Capital. Source: https://millionrounds.com/company/exostellar (Millionrounds; every figure on the page links to its filing or article) United States · [Series A startup](https://millionrounds.com/companies) # Who invested in *Exostellar* 2 rounds we have observed, with the 8 investors named in them. Every figure came from a named source, and where the company reported a raise to the SEC itself, that is shown beside it. AI Cloud Construction Funding summary Updated 26 Oct 2026 **$26M** raised across 2 rounds since 2023, from 2 sources **$15M** Series A **$11M** Series A - **Latest round:** Series A, $11M Feb 2025 - **Led by:** Prosperity7 - **Biggest round:** $15M Series A · Sept 2023 - **Investors:** 8 (1 led) See who backed them ## The funding story Each circle is a round, placed by date and sized by amount. The line above is the running total. 2024 2025 **$15M** Series A **$11M** Series A - **First round:** Series A, $15M - **Biggest round:** $15M - **Between rounds:** 17 months ## The rounds - **Feb 2025** Series A **$11M** *4 new* *3 returning* [Prosperity7](https://millionrounds.com/fund/prosperity7) Lead [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Walden International](https://millionrounds.com/fund/walden-international) [Celesta Capital](https://millionrounds.com/fund/celesta-capital) [Cambium Capital](https://millionrounds.com/fund/cambium-capital) [Candou Ventures](https://millionrounds.com/fund/candou-ventures) [AI Capital Partners](https://millionrounds.com/fund/ai-capital-partners) Reported by Prosperity7 Ventures - **Sept 2023** Series A **$15M** *4 new* [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Walden International](https://millionrounds.com/fund/walden-international) [Launch NY](https://millionrounds.com/fund/launch-ny) [Celesta Capital](https://millionrounds.com/fund/celesta-capital) 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. **Series A** 2023 **Series A** 2025 [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) [Walden International](https://millionrounds.com/fund/walden-international) [Celesta Capital](https://millionrounds.com/fund/celesta-capital) [Prosperity7](https://millionrounds.com/fund/prosperity7) L [Launch NY](https://millionrounds.com/fund/launch-ny) [Cambium Capital](https://millionrounds.com/fund/cambium-capital) [Candou Ventures](https://millionrounds.com/fund/candou-ventures) [AI Capital Partners](https://millionrounds.com/fund/ai-capital-partners) ## Everyone who backed them [National Science Foundation](https://millionrounds.com/fund/nsf-small-business-innovation-research-small-business-techno) Government **2** rounds [Walden International](https://millionrounds.com/fund/walden-international) VC firm **2** rounds [Celesta Capital](https://millionrounds.com/fund/celesta-capital) VC firm **2** rounds [Prosperity7](https://millionrounds.com/fund/prosperity7) VC firm **1** round, led 1 [Launch NY](https://millionrounds.com/fund/launch-ny) VC firm **1** round [Cambium Capital](https://millionrounds.com/fund/cambium-capital) VC firm **1** round [Candou Ventures](https://millionrounds.com/fund/candou-ventures) VC firm **1** round [AI Capital Partners](https://millionrounds.com/fund/ai-capital-partners) VC firm **1** round Missing a round, or an investor who was in one? [Tell us](https://millionrounds.com/corrections?slug=exostellar). ## 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. [Prosperity7 Ventures](https://millionrounds.com/fund/prosperity7-ventures) Corporate VC Per its own site [Cambium Capital Management](https://millionrounds.com/fund/cambium-capital-management) VC firm Per its own site ## Quick answers about Exostellar ### 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. ### 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. ## Companies like Exostellar In the same sector, and raised in the last eighteen months. 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