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The 21-year-old founder building America's next weapons factory
HQ: Huntington Beach, CA, United States | Founded: 2023 | Employees: ~300 (2026, est.) | Stage: Late Stage VC (Series C, $1.8B) | Website: https://machindustries.com
Mach Industries was founded in 2023 in Huntington Beach, California, by Ethan Thornton, who dropped out of MIT at 19 to pursue a radical idea: America's defense manufacturing base was built on centuries-old gunpowder-era processes, and the next generation of weapons should be powered by hydrogen and built with software-defined, rapid-manufacturing techniques. Thornton's first products — hydrogen-powered systems including munitions and unmanned aerial vehicles — attacked both the propulsion and the production problem: hydrogen offers clean, high-energy propulsion, and Mach's factories are designed for speed and iteration like software companies rather than traditional defense primes.\n\nThe company quickly became one of the most talked-about names in the 'new defense' wave (alongside Anduri
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