Castelion
Develops hypersonic strike weapons (e.g., Blackbeard) using additive manufacturing and automation for mass production, targeting defense applications with rapid iteration and vertical integration.
- CEO / Founder
- Bryon Hargis
- Team Size
- 51-200
- Stage
- Growth Stage
- Total Funding
- $464.2M
- Latest Round
- Series B
- Key Investors
- Altimeter Capital; Lightspeed Venture Partners; Lavrock Ventures; Andreessen Horowitz; General Catalyst; First In; Space VC; Cantos; BlueYard; Avenir; Champion Hill; Interlagos; Silicon Valley Bank
Technology & Products
Key Products
Blackbeard hypersonic weapon system
Technological Advantage
Proprietary AM processes for hypersonic components (claimed to reduce lead times and costs); defensible through trade secrets and government contracts; replicable by competitors but with high barriers due to scale and integration.
Differentiation
Value Proposition
Reduces hypersonic weapon production lead times and costs through AM-enabled scalable manufacturing, enabling over 1,000 missiles annually with iterative design cycles and high-cadence testing.
How They Differentiate
Focuses on AM-enabled hypersonic weapon production vs. traditional precision manufacturing; 3x faster iteration cycles through vertical integration and testing; targets mass production (1,000+ missiles/year) vs. niche ordnance.
Market & Competition
Target Customers
U.S. Department of Defense (Army, Navy, Air Force), allied defense agencies
Industry Verticals
Aerospace; Defense
Competitors
General Dynamics OTS Anniston; Action; Nammo Pocal; Greene Metal Products
Growth & Milestones
Growth Metrics
Revenue reported at $51.5M in 2025 with 97 employees; secured $50M U.S. Navy contract in 2026; Project Ranger campus expected to create 300+ jobs.
Major Milestones
Founded in November 2022; Raised $14.2M pre-seed in 2023; Secured $100M Series A in 2024; Closed $350M Series B in December 2025; Awarded $50M U.S. Navy contract in February 2026; Launched Project Ranger manufacturing campus in New Mexico
Notable Customers
U.S. Army, U.S. Navy