Mach Industries

Defense Tech · Autonomous Systems · Venture Capital

Funding

Mach Industries raises $600M Series C extension at $3.7B valuation

Investor enthusiasm for hardware-first deterrence bets is now moving so fast that valuations are doubling within a single quarter.

• Mach Industries closed a $600M continuation of its Series C, lifting its valuation to $3.7B just three months after a $300M tranche valued it at $1.8B, with Ribbit Capital, Infinite Capital, Bedrock Capital and Sequoia continuing as backers.
• The Huntington Beach, California defense manufacturer builds unmanned military hardware, including VTOL strike drones, long-range strike systems and counter-drone interceptors, aiming to undercut costs charged by legacy defense contractors.
• The funding will expand a new unit called Mach Energetics, built from Mach's $50M acquisition of solid rocket motor maker Exquadrum, addressing a propulsion supply-chain bottleneck controlled by just two incumbents.
• Mach's valuation has climbed roughly eightfold in about a year, from $470M in June 2025 to $3.7B now, pushing its total capital raised past $1B.
• Founder and CEO Ethan Thornton, a 22-year-old MIT dropout, secured Sequoia's first-ever defense tech investment through partners Stephanie Zhan and Shaun Maguire before landing a U.S. Army contract.
• The rapid step-up shows mainstream Silicon Valley venture capital racing to fund hardware-first defense manufacturers that promise to out-produce traditional primes on cost and speed.