Surtr raises $4.8M seed for counter-UAS integration software

Jul 7, 2026 · Funding · Surtr Defense Systems · Defense

Surtr Defense Systems raised a $4.8M seed round to build software that integrates counter-UAS sensors, command tools and effectors into a single operator interface.

Surtr Defense Systems company media
Company media · Surtr Defense Systems

Evidence notes

  • The round was backed by Allegis Capital, Eniac Ventures, Gaingels, Robinhood Ventures, Streamlined Ventures and angel investors.
  • Surtr plans to use the capital for hiring, Pentagon program work, ITAR licensing and additional hardware integrations.
  • The company tested acoustic and visual FPV-drone tracking with military operators in Ukraine and reported latency under 100 milliseconds.

Company context

Surtr Defense Systems builds ParallaxOS, an open counter-UAS operating system for sensor fusion, C2 and human-authorized effector tasking. The San Francisco company raised a $4.8M seed in July 2026 and has tested acoustic and visual FPV-drone tracking with military operators in Ukraine.

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