Castelion raises $350 million to accelerate mass production of U.S. hypersonic weapons programme

Castelion Secures $350M Series B Funding

Castelion, a defense technology company, has secured $350 million in Series B financing to support the development of its first hypersonic weapon, called Blackbeard, and the construction of its production and final-assembly facility, Project Ranger. Altimeter Capital and Lightspeed Venture Partners led the funding round, with Andreessen Horowitz, Avenir, BlueYard, Champion Hill, First In, General

Castelion raises $350 million to accelerate mass production of U.S. hypersonic weapons programme

The investment round was led by Altimeter Capital and Lightspeed Venture Partners, with additional participation from Lavrock Ventures, Andreessen Horowitz, General Catalyst, First In, Space VC, Cantos, BlueYard, Avenir, Champion Hill and Interlagos. Castelion said the capital will enable development milestones including the construction of its Project Ranger final-assembly facility and multi-service testing planned for 2026. “Blackbeard helps c…