Castelion vs Forterra
Side-by-side comparison of AI visibility scores, market position, and capabilities
Raised $350M Series B (Dec 2025). $50M US Navy contract for Blackbeard hypersonic prototyping. 1,000-acre solid rocket motor facility under construction.
About
Castelion is a defense startup developing the Blackbeard hypersonic missile system, one of the few startups with an active US Navy contract for hypersonic weapons full-scale prototyping and early operational fielding. The company raised $350 million in Series B financing in December 2025 and secured a $50 million US Navy contract for Blackbeard prototyping, directly addressing the DoD's urgency to field hypersonic strike capability as China and Russia have demonstrated operational hypersonic weapons.
Raised $238M Series C. Only DoD ground autonomy production contract holder (Marine Corps ROGUE Fires). $114M Army prime contract for autonomous breaching systems. AMPV autonomous prototype in 2026.
About
Forterra is the only company with an active DoD production contract for autonomous ground vehicles, holding the Marine Corps ROGUE (Remote Operations for Ground Units) Fires contract and a $114 million Army prime contract for autonomous breaching system development. The company raised $238 million in Series C financing and is targeting delivery of an Armored Multi-Purpose Vehicle (AMPV) autonomous prototype to the Army in 2026 — representing the first autonomous integration into a major Army vehicle program.
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