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Castelion

Low-cost Blackbeard hypersonic missile

Ranked #5 in Best Defense Tech Startups.

Castelion, based in Torrance, California, is developing Blackbeard, a lower-cost hypersonic strike missile built for volume production. In August 2026 it raised $800 million in equity plus a $250 million credit facility at a $13 billion valuation.

Official website

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At a glance

Price fromCustom
Best forMilitaries seeking affordable long-range strike

From Castelion's own website.

What stands out

  • Designed for mass production
  • Backed by JPMorganChase, Andreessen Horowitz and Carlyle

Worth knowing

  • Missile not yet deployed
  • Factory still being built out

How it ranks

Castelion is ranked 5th of 10 in Best Defense Tech Startups (Lister Score 92.6).

#5 in Best Defense Tech Startups · Lister Score 92.6

Castelion is building Blackbeard at a 1,000-acre site in Sandoval County, New Mexico, and says it aims to deploy the missile in 2027..

RankBest Defense Tech StartupsScore
1Anduril Industries97.3
2Shield AI96.1
3Helsing95.0
4Saronic Technologies93.8
5Castelion92.6
6Quantum Systems91.4
7Hadrian90.1
8CHAOS Industries88.9
9Epirus87.6
10Mach Industries86.3

Frequently asked questions

How does Castelion rank on Lister?

Castelion is ranked 5th of 10 in Best Defense Tech Startups (Lister Score 92.6).

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#5 in Best Defense Tech Startups
RANKED #5 ON LISTERBest Defense Tech Startups