Position in SVTR
Snapshot 2026-11-04- Startup SignalsTop 5%↓1
- Defense & Security#3of 75–
About
Castelion, founded in 2022 in California, USA, aims to fundamentally rethink defense hardware development for complex systems.
Full tier & rationale — an SVTR Intelligence benefit
Capital graph
Investor· 10
Founders / team· 3
Funding history
- 2026-08-20
- 2025-12
- 2023-10New funding round$14M
Investors · BlueYard Capital, First In Ventures, Champion Hill Ventures, Lavrock Ventures, Andreessen HorowitzSource · SVTR Weekly #022 ↗
Comparable companies· by market
This company
BusinessLatest roundTotal raisedDate- Castelion
Develops and manufactures low-cost, mass-producible hypersonic strike weapons and long-range precision strike systems
Series C · $1.2B · 2026-08
$1.2B
United States
BusinessLatest roundTotal raisedDate- Mach Industries
Develops and manufactures autonomous unmanned systems and long-range strike munitions for defense, with in-house propulsion…
Series C · $700M · 2026-09 · Valuation $3.7B
$700MValuation $3.7B - Hermeus
Develops high-Mach/hypersonic drones for defense applications
Series C · $500M · 2026-04 · Valuation $1.0B
$500MValuation $1.0B - Aventra Defense Systems
Develops Piranha, a modular glide payload system released from ultra-high-altitude balloons with AI-guided terminal strike…
Undisclosed · 2026-10
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Europe
BusinessLatest roundTotal raisedDateOther / unspecified
BusinessLatest roundTotal raisedDateConfirmed rounds only. Matched on subsector, sector, stage and funding scale — each verifiable on the company profiles.
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Request intro →Ranked by each firm’s deals in this sector over the last 24 months, weighted by nearby stage and shared geography. Indicative only — no rating judgment.