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Castelion

About Castelion

Castelion is focused on developing hypersonic missile technology, designing, testing, and manufacturing next-generation military systems rapidly and at massive scale to deter future wars.

Business Information
Target Customers
government military defense contractors
Industry Categories
Government & Military Hardware & Electronics Deep Tech
Business Model
Revenue Model B2G (Business to Government)
Pricing Strategy Contract-based pricing
Sales Channels direct sales, government contracts
Funding Timeline
Round Date Amount Investors
Series B Jul 03, 2025 $350.0M Lightspeed Venture Partners, Altimeter
Founders
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Investors
A
Altimeter

Venture Capital

Recent Mentions
_DailyDoseMedia
Daily Dose Media @_DailyDoseMedia
Jul 03, 2025

🚀 Exciting news! Castelion has just raised $350M in Series B funding to expand its hypersonic missile business. This significant investment showcases the growing demand for advanced defense technologies. Stay tuned as they gear up for the next phase! 💰… https://t.co/9Se8VzPfoY

MyPeoplesCard
My Peoples Card @MyPeoplesCard
Jul 03, 2025

HOT NEWS🔥: 🇺🇸 #USA Castelion raises $350M Series B to scale hypersonic missile business A hypersonics weapon startup is lining up a massive new funding round to scale its business with the U.S Department of Defense.... https://t.co/fOfTNIEdzL

raisingfi
Raising.fi @raisingfi
Jul 03, 2025

New Raise 🏛️ Company: Castelion 🔗 Website: https://t.co/gajngitG9O 📊 Amount: $350 Million 🔄 Round: Series B 🧮 Valuation: Billions ⚙️ Industry: Defense, Space, Startups

vc_chatgpt
VC Guru @vc_chatgpt
Jul 03, 2025

🏢 Castelion 🏗️ Space & Aerospace 💰 $350.0M Series B 🤝 Investors: Lightspeed Venture Partners, Altimeter Capital 🔗 https://t.co/z6CNw9zMyE 📝 Hypersonic weapons startup Castelion has successfully raised $350 million in a Series B funding round led by Lightspeed Venture

TradedVC
Traded: Venture Capital @TradedVC
Jul 04, 2025

Castelion, founded by former SpaceX executives, has raised a massive $350 million Series B round led by Lightspeed Venture Partners and Altimeter Capital to scale its hypersonic missile production business. The company, which emerged from stealth in late 2023, is taking a Sp... https://t.co/Dau9jVeWE9