Satellite builder Muon Space has closed a $250 million Series C at a $1.5 billion valuation, according to Reuters, with Eclipse Capital leading the round. Google, Salesforce Ventures, Wellington Management, I Squared Capital and Woven Capital joined, alongside existing backers Radical Ventures, Congruent Ventures and ArcTern Ventures.
The 2021-founded company runs what it calls a Mission Foundry: mission design, manufacturing, payloads, flight software, launch and operations under one contract. The pitch is speed – constellations in months instead of years.
Production swallows most of the cash. The San Jose factory that opened in June targets 500 satellites a year by 2027, about ten times the old ceiling, with 50-plus spacecraft in development and 13 launches booked in the coming twelve months. First-half 2026 saw seven satellites fly, lifting the in-orbit tally to 11 across six missions with a clean record.
Two customer constellations enter service this year: Vindlér 2.0, built for Sierra Nevada Corp., and FireSat, the wildfire-detection network developed with Earth Fire Alliance and Google.org. CEO Jonny Dyer said the raise lets Muon accelerate the next generation of space infrastructure, and the company is also investing in on-orbit AI compute and high-bandwidth connectivity through a Starlink partnership.
Demand is running ahead of output – president Gregory Smirin says the sales pipeline sits well above $10 billion. The round brings Muon’s total funding past $386 million.
