Castelion Closes More Than $1 Billion Series C as Reach Capital Raises $265 Million Fund V, Betting on Hard-to-Replicate Systems
Hypersonic weapons startup Castelion closed more than $1 billion in Series C funding on August 18–19, while Reach Capital announced a $265 million Fund V aimed at AI startups in education, health, and the future of work. The largest rounds of the week all favored companies with hard-to-replicate systems, data, or regulated distribution.