Mach Industries has raised an additional $600 million to expand a defense business that combines unmanned systems with the industrial capacity to manufacture them. The Huntington Beach company serves the U.S. military and its allies, while also building a component-supply business for other defense manufacturers. Its latest financing puts the company at a $3.7 billion valuation.
Mach's product range includes aircraft that do not need a conventional runway, counter-drone systems and high-altitude platforms intended to carry communications or sensing equipment. These are physical systems requiring repeated manufacturing and testing, not simply autonomy software sold to someone else's aircraft maker. The company's stated approach is to control more of the hardware and production process itself.
That strategy extends to the parts suppliers need before they can deliver finished equipment. TechCrunch reports that Mach bought rocket-motor manufacturer Exquadrum in a $50 million cash-and-equity transaction in May, creating the basis for its Mach Energetics operation. Alongside Mach Propulsion's engine work, the component business gives Mach another customer group: manufacturers buying subsystems for their own products. The acquisition is separate from the new financing and is not additional capital raised.
Forge is Mach's factory concept. The company describes a decentralized network of flexible facilities that can be retooled for new designs, including manufacturing work with partner companies and countries. That makes the factory itself part of the offering, rather than merely a building that supports one product. The promise depends on being able to change what a facility produces while keeping quality and delivery dependable.
The September 10 financing announcement names Ribbit Capital, Infinite Capital, Bedrock Capital and Sequoia among Mach's continuing investors. The new $600 million extends a $300 million Series C announced in June, taking the combined round to $900 million; it is not a separate $900 million injection. Mach says the proceeds will support platform development and manufacturing expansion. Its headquarters includes a 115,000-square-foot manufacturing facility, with additional infrastructure elsewhere in California.
Founder Ethan Thornton is therefore scaling two linked businesses: defense platforms and the capacity to build key hardware for those platforms and outside customers. Bringing more work in-house can reduce dependence on constrained suppliers, but it also creates a larger operation to run. Production consistency, testing throughput and customer delivery will be more revealing measures of that strategy than the financing valuation alone.