a16z Leads Westmag Seed Round

Venture capital firm Andreessen Horowitz (a16z) is leading the seed funding round for Westmag, a startup focused on establishing domestic U.S. manufacturing of motors and actuators. This investment targets a critical gap in the supply chain for defense, drone, and robotics industries.

The move comes amid growing concerns over reliance on foreign components, particularly from China, which dominates global production of these essential parts. Westmag aims to mitigate risks stemming from geopolitical tensions and tightening regulations, such as recent FCC bans on foreign-made drone components.

Addressing Supply Chain Vulnerabilities

The U.S. industrial base faces significant hurdles in sourcing U.S.-manufactured and ITAR-compliant components at scale. Motors and actuators, described as the "muscle of physical AI," are foundational to physically actuated devices, including drones and robots.

Westmag's founders, David Hansen and Jordan Sanders, are positioned to tackle this challenge. Hansen, dubbed "the motor guy," brings deep technical expertise, while Sanders provides operational execution. Together, they are building a U.S.-based manufacturing capability for these vital components.

The company has already established a semi-automated production line in South San Francisco, rapidly scaling production for defense clients and the broader robotics sector. This a16z Westmag investment underscores the increasing strategic importance of domestic manufacturing for advanced technologies.

Geopolitical Tailwinds and Market Demand

Recent regulatory shifts, including the FCC's December 2025 ban on foreign-made drone components, create a strong tailwind for Westmag. This aligns with the explosive demand from both defense applications and the rapidly expanding humanoid robotics sector.

The timing is critical, as many American companies have been building products on an unstable foundation of externally sourced critical parts. Westmag's initiative to build a controlled, domestic supply chain addresses this urgent need.

a16z's investment highlights the firm's strategic focus on foundational technologies for the physical world, particularly within sectors like defense and robotics, where supply chain resilience is paramount. The firm has previously emphasized the growing opportunities in robotics supply chain and the broader implications for AI manufacturing.