Mach Industries has doubled its valuation in three months, a cadence that says as much about defense budgets as it does about the startup.
The Huntington Beach company raised $600M in an extension of its Series C, lifting its valuation to $3.7B. The original tranche, announced in June, was $300M at $1.8B. Ribbit Capital, Infinite Capital, Bedrock Capital and Sequoia backed both rounds.
Mach builds unmanned military systems: vertical takeoff drones, long-range strike platforms and counter-drone hardware. It argues that tightly integrated designs undercut incumbent contractors on cost, with a 115,000-square-foot facility at its headquarters anchoring that pitch.
Founder and chief executive Ethan Thornton, who dropped out of MIT, has also bought his way into a supply chokepoint. In May, Mach acquired solid rocket motor maker Exquadrum for $50M in cash and equity, beating at least eight rival bidders. That deal became Mach Energetics, which now sells motors, jet engines and energetic systems to other defense firms.
The new money goes toward long-range strike, counter-UAS platforms and manufacturing capacity. Defense technology has become one of venture’s most crowded corners, and Mach’s rapid re-rating shows investors still reward scale and vertical integration over promises.
