Mach Industries‘ Series C raised a question that $300 million and a $1.8 billion valuation can obscure but not quite answer: can a three-year-old defence startup running six simultaneous weapons programmes actually deliver on all of them?
The Huntington Beach, California company, founded in 2023, closed the round earlier this month, with Infinite Capital and Ribbit Capital leading and Bedrock Capital, Sequoia Capital, and Khosla Ventures participating, according to TechCrunch’s Series C report. The company has now raised roughly $485 million in total. That figure includes a $100 million Series B closed in June 2025 at a $470 million valuation, meaning the Series C nearly quadrupled Mach’s worth in approximately one year.
The round was originally intended to be smaller. Ethan Thornton, Mach’s 22-year-old founder and chief executive, told TechCrunch the company went out seeking $200 million, found itself ‘extremely oversubscribed at 200,’ and decided to take $300 million instead.
Six Programmes, One Thesis on Mach Industries’ Series C Strategy
Thornton dropped out of MIT at 19 to build weapons. His first attempt, a hydrogen-powered system prototyped with parts from Home Depot and Amazon, ended in an early lesson: ‘hydrogen was just a bad bet in general.’ The company was then operating under the name Trident Industries, and its first government work was a Marine Corps contract worth up to $174,874 for a hydrogen system for infantry units.
The pivot was total. Mach is now developing a vertical-takeoff strike aircraft, a long-range anti-ship missile, two stratospheric systems, a surface-to-air interceptor built to kill drones, and a 40-foot, roughly 4,000-pound Navy logistics-and-strike aircraft that can fly over a thousand miles with a thousand-pound payload. None of the six is in full-rate production. Mach’s largest aircraft to date has been about 13 feet long.
The breadth invites scepticism, and Thornton volunteers it himself. ‘It’s very hard,’ he said at TechCrunch’s StrictlyVC event in Los Angeles. His answer is that defence is structurally different from other deep-technology sectors: ‘It is a chess game you’re playing with an adversary, with hundreds of different products that need to be shipped if we want security.’ Pick just one, he argued, and you’ve already conceded the board.
The company holds around 13 government contracts, most sitting in the middle tier of procurement: past initial design, into range testing, but short of the rate-manufacturing stage that fewer than ten programmes industry-wide have ever reached. Thornton says several systems should reach operational deployment by the end of this year, with a goal of pushing three of the six into rate manufacturing in the same window, scaling from hundreds of units a month to hundreds of thousands at a factory he says Mach plans to stand up soon.
Supply Chain as the Real Battleground
Alongside the weapons platforms, Mach has been quietly building what it hopes will become supply-chain infrastructure for the broader industry. In May, the company acquired Exquadrum, a 24-year-old solid rocket motor firm, for $50 million in a cash-and-equity deal, beating roughly eight other bidders. Exquadrum has since been rebranded as Mach Energetics, a dedicated energetics division, according to the company’s official announcement.
The connection came about by accident. In September 2025, an Exquadrum customer attending an MIT recruiting event overheard a Mach recruiter mention the company was hunting for a solid rocket motor supplier, per TechCrunch’s Exquadrum acquisition report.
Kevin Mahaffy, Exquadrum’s chief executive and co-founder, described the rationale plainly. His company’s ‘propulsion and energetic systems developed over the past two decades integrate directly with Mach’s platform work, enabling a unified approach spanning solid propulsion, pyrotechnics, munitions, warheads and other energetic technologies,’ he said, as reported by the Los Angeles Times. Mach Energetics is also intended to sell components and testing services to outside defence firms, not only to its parent company. Selling components now accounts for roughly half of Mach’s total revenue.
Thornton’s argument is that the bottleneck in American defence production is not the vehicles being built. ‘The hard part is actually getting the stuff into the building,’ he said: jet engines, solid rocket motors, radar. Mach built and fired two jet engines from scratch in about eight months, a process he says traditionally takes four years. The company’s Viper strike drone was designed to cost under $100,000 to manufacture at scale, up to 300 times less than traditional military platforms, according to a Contrary Research breakdown of Mach’s business.
The comparison point that shadows every conversation about Mach is Anduril, which raised $5 billion in May at a $61 billion valuation and in March landed a 10-year, $20 billion-ceiling Army enterprise contract covering over 120 separate procurement actions. Thornton distinguishes the two companies by direction: ‘Anduril’s playbook has been very much top-down, starting with the software stack. We’re very much bottom-up, starting from the hardware stack and then starting to wrap software around it.’ He also insists the competition is not zero-sum, pointing to a production gap that runs deep: China reportedly builds around a thousand cruise missiles a day; the United States builds roughly one every three days.
Whether Mach’s Mach Industries Series C capital can close that kind of gap across six simultaneous programmes, while also standing up a factory and scaling a components business, is the question the next twelve months will begin to answer. Thornton says manufacturing at scale now dominates every strategic conversation inside the company. The Orange County Business Journal has noted that Mach sits in the same Southern California defence corridor as Anduril in Costa Mesa. The geography is the least of what they share.
