Mach Industries just raised $300 million in a Series C round that values the defense startup at $1.8 billion. That’s nearly four times the roughly $470 million valuation it carried after its Series B just one year earlier.

Inside the round

Infinite Capital and Ribbit Capital co-led the Series C, with Bedrock Capital, Sequoia Capital, and Khosla Ventures also participating. The round brings Mach’s total funding to over $485 million since its founding, a staggering sum for a company barely three and a half years old.

The previous Series B, a $100 million raise completed in June 2025, already signaled strong institutional appetite.

What Mach actually builds