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Former SpaceX engineers' Castelion Raises $1 billion Series C

Company profile · FinTech · Updated August 21, 2026

Former SpaceX engineers' Castelion raises $1B at $13B valuation to mass-produce hypersonic weapons.

Series C$1 billionTotal tracked $1 billionUndisclosed HQ

What it does

Former SpaceX engineers' Castelion raises $1B at $13B valuation to mass-produce hypersonic weapons.

Traction

undisclosed investors participated in the latest tracked round; deeper traction analysis is held until source support is strong enough.

Trend impact

MD-grade thesis held: available source material is not specific enough to support a non-generic investor-economist read without overclaiming.

Funding history

  • August 21, 2026 · Series C · $1 billion · undisclosed investors
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