Mach Industries, the three-year-old defense technology startup, has successfully closed a $300 million Series C funding round, elevating its valuation to an impressive $1.8 billion. This significant capital injection, announced on Monday, marks a nearly fourfold increase in the company's valuation within a year, following a $100 million raise at a $470 million valuation in June 2025. The round was co-led by deep tech fund Infinite Capital and Ribbit Capital, with participation from existing investors including Bedrock Capital, Sequoia Capital, and Khosla Ventures.
The Huntington Beach, California-based company, founded in 2023 by 22-year-old CEO Ethan Thornton, specializes in developing autonomous vehicles and advanced propulsion systems for the defense sector. Thornton indicated that the company initially sought to raise $200 million but increased the amount due to overwhelming investor interest. > "We went out to raise 200 [million dollars] and we were extremely oversubscribed at 200 and happy with the price, so we decided to push up to 300. We’re still oversubscribed at the 300 mark," Thornton stated regarding the fundraising efforts.
Mach Industries has rapidly expanded its product portfolio, with five autonomous vehicles currently in development: Viper (a jet-powered vertical takeoff vehicle), Glide (a high-altitude glider), Stratos (an airborne surveillance platform), Dart (a low-cost counter-drone interceptor), and Pike (for long-range munitions). Production for at least three of these systems is anticipated to commence next year, showcasing the company's aggressive development timeline. This rapid product development is a key factor in attracting investor confidence.
The company's strategic growth was further bolstered by its recent acquisition of solid rocket motor startup Exquadrum in a $50 million cash-and-equity deal in May. This acquisition, which saw Mach Industries outbid several other potential buyers, allows the company to control its rocket motor supply chain and launched a new commercial business, Mach Energetics. This move addresses a critical shortage of solid rocket motors in the defense industry, providing Mach Industries with a significant competitive advantage.
With a workforce that has grown to approximately 350 employees and a 115,000-square-foot manufacturing facility in Huntington Beach, Mach Industries plans to utilize the new funds to expand its Forge factory network and accelerate the production of its systems. The company also secured a Department of Defense contract through the Defense Innovation Unit (DIU) to develop a new "runway-independent strike aircraft," further solidifying its role in modern defense innovation. The company aims to significantly ramp up production, with Thornton expressing a vision to increase vehicle output from 10 per week to 1,000 per week within the next year.
