Castellion reached a $2.8 billion valuation after raising a $350 million Series B funding round. Founded in 2022, the company develops military systems to scale and manufacture advanced strike systems. With more than $460 million raised to date and backing from top tier investors, Castellion has quickly become one of the fastest growing companies in modern defense technology. It is headquartered in Austin, Texas, United States.
The company focuses on high speed production and deployment of next generation defense capabilities.
Keep reading to learn how Castellion became a $2.8 billion innovator in military systems manufacturing.
What Is Castellion and What Does It Do?
Castellion builds military systems designed to scale the manufacturing and deployment of advanced strike technologies. Its platform enables rapid production cycles, improved reliability, and high volume readiness for defense partners. The company focuses on the development and delivery of modern strike capabilities that meet evolving national security needs.
Castellion combines engineering, manufacturing automation, and defense hardware innovation to help governments and defense organizations enhance strategic readiness.
How Much Funding Has Castellion Raised?
1. Series B Round
- Amount Raised: $350 million
- Date: 2024
- Valuation: $2.8 billion
- Lead Investors: a16z, Lightspeed Venture Partners
- Purpose: Expand manufacturing capacity, accelerate defense system production, and scale operational infrastructure
2. Earlier Rounds
- Cumulative Funding: More than $110 million
- Key Investors: a16z, Lightspeed Venture Partners, and early stage defense focused investors
- Purpose: Develop core military systems platform, scale early manufacturing, and support initial deployments
Total Funding Raised: More than $460 million Latest Funding Date: 2024 Latest Known Valuation: $2.8 billion
Key Investors
- a16z
- Details: Venture capital firm investing in frontier technology and defense innovation
- Focus Areas: Defense systems, AI, infrastructure, and deep tech
- Lightspeed Venture Partners
- Details: Growth stage firm backing high impact technology startups
- Focus Areas: Defense technology, engineering platforms, automation, and advanced manufacturing
Where Is Castellion’s Headquarters?
Castellion is headquartered in Austin, Texas, United States, supporting its defense manufacturing operations, engineering efforts, and product development teams.
What’s Next for Castellion?
Castellion plans to scale its manufacturing systems, expand partnerships with defense agencies, and accelerate deployment of next generation strike technologies. The company aims to improve speed, cost efficiency, and manufacturing throughput to support modern defense requirements at global scale.
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