The AI-powered factory startup is betting big on mega factories and workforce expansion as US defense spending acceleratesHadrian Automation just closed a $1.37B Series D round, pushing the defense manufacturing startup’s valuation to $7.87B. From $1.6B to $7.87B in monthsThe company’s valuation sat at roughly $1.6B not long ago. Earlier speculation in June 2026 pegged the company at a potential $7.5B valuation, but the final number came in even higher. The factory expansion playbookThe company’s newest facility, Factory 3 in Mesa, Arizona, spans between 270,000 and 290,000 square feet. Hadrian’s total manufacturing footprint has ballooned to nearly 3 million square feet.