Westmag Raises $11M in Seed Funding Led by Andreessen Horowitz

The round also saw participation from Founders Fund, Lux Capital, NFDG, Menlo Ventures, and others.

The company plans to use the funding to expand its operations and accelerate product development.

Westmag raised $11 million in funding in 2025. Since then, the company has focused on building manufacturing capacity, strengthening its supply chain, and testing its motors and actuators with high-volume customers.

The company is now scaling production at Factory 01, its headquarters and launch facility in South San Francisco, to deliver on existing customer orders for hundreds of thousands of units.

Westmag says demand for high-performance motors and actuators across drones, humanoid robots, quadrupeds, and other mobile robotics will grow far beyond what the domestic industry has historically supplied over the next five years. The company believes it is currently the only player building high-volume, low-cost production capacity needed for U.S. robotics and drone manufacturers to compete globally.

Westmag is bringing production back onshore by vertically integrating design, manufacturing, and supply chain operations. At its Factory 01 facility in South San Francisco, the company designs, winds, assembles, and tests motors and actuators on a single integrated platform. Using flexible automation and modular production systems, Westmag is able to scale efficiently across many product types and high-volume orders for different customers and applications.

Westmag is building its supply chain with key suppliers in the United States and allied countries, including Japan, where it already works with several partners.

The company is also investing in upstream industrial capacity for critical components such as stator steel stamping and rare earth magnet finishing. These investments help reduce costs and give Westmag greater control over its entire bill of materials.

Westmag has focused its early product development on working directly with a small group of high-volume customers through supply offtake agreements. This approach helps the company quickly build and scale its manufacturing capacity.

Using this foundation, Westmag plans to expand its range of standardized motors and actuators so that smaller customers can also easily access them. The company has chosen to build and scale in the Bay Area to stay close to major customers, investors, and engineering talent, allowing it to grow faster.

“Motors and actuators are the muscle of physical AI, and right now America’s share of that muscle is essentially zero,” said Erin Price-Wright, general partner at Andreessen Horowitz. “Without a domestic industry, every American drone company, every robotics company and every defense prime is building on a foundation they do not control. David and Jordan understand that the win condition is not a marginally better motor. It is the ability to make a lot of them, here, on a platform that serves both drones and robots.”

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“Western drone and robot companies should benefit from the compounding advantages of reliable, cost-effective domestic component supply,” said Jordan Sanders, Co-Founder and COO of Westmag. “That’s why we’re building Westmag to be the great American motor company serving the global market.”

“Most of the hardware, especially the motors and actuators that actually bring motion to physical AI, has been built outside of the U.S. But it doesn’t have to be this way,” said David Hansen, Co-Founder and CEO of Westmag. “Westmag is aggregating the rising demand to quickly scale production capacity and become the trusted supplier of high-performance, cost-effective motors and actuators.”

About Westmag

Founded by David Hansen and Jordan Sanders, Westmag is a U.S. manufacturer of drone motors and robot actuators. The company designs and produces its products in South San Francisco and is focused on scaling domestic manufacturing to serve global demand. Westmag is currently ramping up production to supply leading drone and robotics companies with millions of motors and actuators.

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