Castellian develops defense technology and autonomous systems for national security applications.
This slot renders the company's funding history: dates, rounds, amounts, valuations and lead investors once populated in data/funding-rounds.json.
Defense tech startup Castelion closed a $1B Series C ($800M equity + $250M credit) at a $13B valuation to accelerate production of its Black Beard hypersonic missile system, leveraging SpaceX-style vertical manufacturing to achieve low-cost mass production for U.S. and allied militaries.