Castelion (Series B)
Funding Details
Awarder
Inbox
Date Award
December 5, 2025
Vertical
Defense Technology
Funding URL
View Funding Page
Funding Amount
$350,000,000
Company Info
Market
Hypersonic Systems
Location
Torrance, CA, USA
Coinvestors
Altimeter Capital, Andreessen Horowitz, Avenir Growth Capital, BlueYard Capital, Cantos Ventures, Champion Hill Ventures, First In, General Catalyst Partners, Interlagos, Lavrock Ventures, Lightspeed Venture Partners, Space.VC
Company Description

Castelion builds American hypersonic deterrence through rapid, affordable, and scalable production of advanced strike weapons. Blackbeard is the first U.S. hypersonic system engineered from inception for industrial-rate output, commercial unit cost, and continuous flight test iteration.

Links
Website
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