Castelion hits $13B valuation to mass-produce hypersonic missiles

Founded in 2022, Castelion set out to manufacture hypersonic weapon systems at a lower cost and at faster speeds than traditional defense primes.

Defense startup Castelion has raised $1 billion at a $13 billion valuation as it races to scale production of its Blackbeard hypersonic weapon system and develop new long-range and defensive capabilities. Co-founder and CFO Andrew Kreitz discusses why manufacturing thousands of…