Castelion · Series A

Mass-producing affordable hypersonic weapons for defense

Amount

$70M

Round

Series A

Valuation

—

Announced

Jan 2025

Investors

Lead investor

Lightspeed Venture Partners

Participating investors

Andreessen Horowitz First In

Other Castelion rounds

Date	Round	Amount
Aug 2026	Series C	$800M	Details →
Dec 2025	Series B	$350M	Details →