• - Founded - 2025 - Status - Private - LSVP Investment - 2024 - Stage Invested - Series A Castelion was founded to restore America’s ability to field advanced weapons at speed and scale. • Inspired by the engineering urgency of the WWII and Apollo eras, we combine rapid iteration, vertical integration, and scalable manufacturing to deliver affordable, high-performance systems. • Our mission: rebuild industrial agility to strengthen national security and outpace evolving threats.

Article Summaries:

  • Castelion Launches Series A Funding Round

Castelion, a private defense technology startup founded in 2025, announced a Series A investment led by LSVP Investment in 2024. The company aims to accelerate America’s ability to produce advanced weapons quickly and at scale, drawing inspiration from the rapid engineering cycles of World War II and the Apollo program. By combining rapid iteration, vertical integration, and scalable manufacturing, Castelion seeks to restore industrial agility for national security and outpace emerging threats. The funding will support the development of affordable, high‑performance systems designed to enhance U.S. defense capabilities.

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