Three-year-old defense startup Mach Industries has acquired solid rocket motor (SRM) specialist Exquadrum for $50 million in a cash-and-equity deal. The Huntington Beach-based firm has fully integrated the startup, now rebranded as Mach Energetics, to secure control over a critical and increasingly scarce component in modern unmanned systems.
A Strategic Acquisition Born from Serendipity
The acquisition materialized following a chance encounter last September. While at an MIT recruiting event, an Exquadrum client overheard a Mach recruiter discussing the company’s urgent need for a reliable solid rocket motor supplier. This connection rapidly evolved: Mach initially became a client before moving to acquire the company outright. The deal successfully outpaced over eight other competing bidders.
Vertical Integration as a Defense Necessity
“The Exquadrum acquisition marks an important next stage in Mach’s growth,” said founder and CEO Ethan Thornton, who left MIT at 19 to launch the venture. “As we deliver vehicles to the warfighter, we’ll continue to vertically integrate our supply chain across solid rocket motors, engines, radar, and avionics to ensure we deliver the best possible product at the lowest cost. In many areas of the defense industrial base, these components are not only too expensive or lacking performance, they’re simply unavailable, with lead times stretching years. In short, vertical integration is non-optional.”
Addressing the Pentagon’s Critical Bottleneck
The supply chain for solid rocket motors is currently under extreme pressure. Decades of industry consolidation have left the domestic market dominated by two primary contractors—Aerojet Rocketdyne and Northrop Grumman—leaving little room for independent capacity to meet the surge in demand driven by modern drone warfare.
The Pentagon has signaled the severity of this issue, recently awarding defense tech firm Anduril $43.7 million to specifically bolster domestic SRM production. This investment, the second of its kind for Anduril in just over a year, highlights the technology as a critical munitions supply chain bottleneck.
Mach Energetics: Scaling Beyond Internal Needs
Mach is positioning itself as a vital piece of the defense infrastructure rather than a mere systems builder. Mach Energetics plans to offer components, testing services, and subsystems to other defense firms. The deal brings all 85 of Exquadrum’s employees into the fold, along with their intellectual property and a 70,000-square-foot facility in Victorville, California, which includes a dedicated energetics and rocket propulsion test site. The combined entity now employs approximately 350 people, with Exquadrum co-founders Kevin Mahaffy and Eric Schmidt moving into key leadership roles.
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Owning the Stack: The Path to Production
This acquisition aligns with the broader strategy of ambitious defense tech firms focusing on “owning the stack” to leverage cost and speed as competitive advantages. Mach currently manages five vehicle programs in various development stages: the Viper jet-powered VTOL, the Glide high-altitude strike glider, the Stratos airborne surveillance platform, the Dart low-cost counter-drone interceptor, and the Pike long-range strike munition. With at least three of these set to enter production this year, the company expects the acquisition to significantly improve unit economics.
To date, Mach has raised nearly $200 million, including a $100 million Series B round last June led by Bedrock Capital, Khosla Ventures, and Sequoia Capital, placing the company’s valuation at $470 million. As the firm moves from development to large-scale production, this valuation will be a key metric for the defense industry to monitor.
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