Defense tech startup Castelion secured $1 billion in Series C funding, reaching a $13 billion valuation. The round was co-led by Andreessen Horowitz, Carlyle, and JP Morgan Chase.
Castelion aims to scale production of hypersonic missiles, weapons that travel faster than sound and are difficult to intercept. The funding positions the company as a key player in next-generation defense technology.
The Series C participants—Andreessen Horowitz, Carlyle, and JP Morgan Chase—represent a blend of venture capital, private equity, and institutional banking backing. This combination signals confidence in both Castelion's technology and its path to profitability.
Hypersonic weapons development has accelerated globally, with the U.S., China, and Russia all pursuing advanced systems. Castelion's focus on manufacturability addresses a critical bottleneck: moving from prototype to mass production.
The $13 billion valuation places Castelion among the most valuable defense startups. Previous funding rounds have built the company's engineering and manufacturing capabilities, with this latest injection supporting expanded production capacity and supply chain development.
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