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Castelion Receives $1B Series C Round

Reported by Vcnewsdaily
Aug 20, 2026· 2 min read
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Key Takeaways
  • • Castelion, a U.S. defense technology company, secured $1 billion in Series C funding ($800 million equity + $250 million revolving credit facility), valuing the company at $13 billion.
  • • JPMorganChase's Strategic Investment Group co-led the equity round alongside Andreessen Horowitz and Carlyle, with participation from T. Rowe Price Associates, Lightspeed Venture Partners, Lavrock Ventures, Altimeter, General Catalyst, and Interlagos.
  • • Funding will accelerate production of Blackbeard, Castelion's low-cost, mass-producible hypersonic strike missile engineered for industrial-scale output and commercial unit economics, while expanding into longer-range strike and defensive systems.
  • • Castelion operates manufacturing facilities across New Mexico, Texas, and California, with headquarters in Torrance, California, and maintains a Washington D.C. office for government relations.
Summary
Castelion announced a $1 billion Series C funding round aimed at scaling production of its hypersonic missile technology and broadening its defense systems portfolio. The round comprises $800 million in equity financing and $250 million in committed revolving credit facility financing, valuing the company at $13 billion post-investment.

The equity financing was co-led by JPMorganChase's Strategic Investment Group—part of the firm's Security and Resiliency Initiative—alongside venture capital and private investment heavyweights Andreessen Horowitz and Carlyle. Additional investors included Lightspeed Venture Partners, Lavrock Ventures, Altimeter, General Catalyst, and Interlagos, with T. Rowe Price Associates entering as a new investor. This investor composition reflects both venture and established institutional capital backing the defense technology sector.

The capital infusion directly targets accelerated production of Blackbeard, Castelion's flagship product positioned as the first American hypersonic missile designed from inception for industrial-rate manufacturing, commercial-grade unit costs, and iterative flight testing. The company plans to expand beyond Blackbeard into longer-range strike weapons and defensive systems, indicating a multi-product strategy within the hypersonic and advanced weapons space.

Castelion's operational footprint spans manufacturing in New Mexico, Texas, and California, with corporate headquarters in Torrance, California, and a Washington D.C. presence. The company characterizes its mission as restoring American conventional deterrence capability through rapid, affordable, and scalable advanced strike weapon production. This positioning aligns with stated U.S. defense modernization priorities surrounding hypersonic weapons development and industrial base resilience.

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Sources

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Vcnewsdaily Castelion Receives $1B Series C Round