Castelion hits $13B valuation to mass-produce hypersonic missiles
In Brief
12:01 PM PDT · August 20, 2026
Castelion, a missile startup founded by former SpaceX executives, has raised a $1 billion Series C at a $13 billion valuation. The round was co-led by Andreessen Horowitz, Carlyle, and JP Morgan Chase.
Founded in 2022, Castelion set out to manufacture hypersonic weapon systems at a lower cost and at faster speeds than traditional defense primes. Since then, the startup has secured more than $500 million in U.S. military contracts.
The funding for the startup is timely. The Pentagon has been looking to procure more of these weapons, since the U.S.’s stockpile of hypersonic missiles capable of travelling at speeds above Mach 5 hasn’t kept pace with China’s. Castelion is betting it can help close the gap with its faster manufacturing process.
The Torrance, Calif.-based startup will use the fresh capital to produce its Blackbeard missiles, named after a fierce...
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