120°W110°W100°W90°W80°W70°W25°N30°N35°N40°N45°N50°NPortal Space SystemsGraviticsOverland AIWatchtower LabsStarfish SpaceStoke SpaceDefense tech companies and startups in Washington
6 Washington-based defense and dual-use startups we track, working across Autonomy & AI, Ground Robotics and Space & ISR. Together they have disclosed $2.7B in funding, led by Stoke Space (~$2.3B). The newest round on record is Watchtower Labs's Seed (Oct 2026).
Latest rounds
| Date | Company | Round | Amount | HQ | Sector |
|---|---|---|---|---|---|
| Oct 2026 | Watchtower Labs | Seed | $35M | Seattle, WA | Autonomy & AI |
| Sep 2026 | Stoke Space | Series E | $1B | Kent, WA | Space & ISR |
| Apr 2026 | Starfish Space | Series B | $100M | Tukwila, WA | Space & ISR |
| Apr 2026 | Portal Space Systems | Series A | $50M | Bothell, WA | Space & ISR |
| Feb 2026 | Overland AI | Series B | $100M | Seattle, WA | Ground Robotics |
All companies
Full directoryWatchtower Labs
Seattle, WashingtonBuilds AI decision support software for military commanders, starting with logistics planning for fuel, ammunition and transport routes.
Stoke Space
Kent, WashingtonDevelops Nova, a fully reusable medium-lift launch vehicle, targeting commercial and national security launch missions.
Starfish Space
Tukwila, WashingtonBuilds Otter servicing spacecraft that dock with satellites for life extension, inspection and deorbit, for the Space Force, SDA, NASA and commercial operators.
Portal Space Systems
Bothell, WashingtonDevelops Supernova, a highly maneuverable spacecraft using solar thermal propulsion to move between LEO, MEO and GEO for space domain awareness and servicing.
Overland AI
Seattle, WashingtonBuilds off-road autonomy software and the ULTRA uncrewed ground vehicle for breaching, reconnaissance and logistics missions.
Gravitics
Redmond, WashingtonBuilds large spacecraft modules, including an Orbital Carrier that stores and deploys satellites on demand for Space Force missions.
Questions
How many defense tech startups are in Washington?
We track 6 defense and dual-use startups headquartered in Washington, as of November 14, 2026.
Which Washington defense tech startup has raised the most?
Stoke Space, with ~$2.3B in disclosed funding among the companies we track.
Which cities in Washington have the most defense tech startups?
Seattle (2), Kent (1) and Tukwila (1), counting the companies in our directory as of November 14, 2026.