Muon Space
Designs and operates LEO satellite constellations on its Halo platform for Earth observation, wildfire detection and national security missions.
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 |
|---|---|---|
| Aug 2026 | Series C | $250M |
Why it matters
Second-stage NRO contract (May 2026) for the Halo satellite; named in the 2026 SpaceWERX STRATFI cohort.
Is Muon Space publicly traded?
Muon Space 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
Muon Space: key questions
What does Muon Space do?
Designs and operates LEO satellite constellations on its Halo platform for Earth observation, wildfire detection and national security missions.
What does Muon Space make?
Products named by Muon Space include Halo.
Where is Muon Space based?
Muon Space is headquartered in Mountain View, California. It was founded in 2021.
How much funding has Muon Space raised?
A cumulative total is not disclosed. The latest round was: Series C, $250M, Aug 2026.
Who are Muon Space's investors?
Notable investors include Eclipse, Radical Ventures, Congruent Ventures, Costanoa Ventures, Activate Capital, ACME Capital.
Is Muon Space publicly traded?
Muon Space 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 Muon Space stock?
Not on a public exchange: Muon Space 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
- washingtontechnology.com/companies/2026/08/castelion-muon-space-complete-series-c-rounds/4
- payloadspace.com/spacewerx-announces-2026-stratfi-awardees/
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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