120°W110°W100°W90°W80°W70°W25°N30°N35°N40°N45°N50°NMatrixSpaceASI (Air Space Intelligence)Blue Water AutonomyCorridianSea Machines RoboticsRe:Build ManufacturingDefense tech companies and startups in Massachusetts
6 Massachusetts-based defense and dual-use startups we track, working across Advanced Manufacturing, Autonomy & AI, Maritime and Sensors & Comms. Together they have disclosed $4.2B in funding, led by Re:Build Manufacturing (>$4B). The newest round on record is Corridian's Seed (Nov 2026).
Latest rounds
| Date | Company | Round | Amount | HQ | Sector |
|---|---|---|---|---|---|
| Nov 2026 | Corridian | Seed | $38M | Boston, MA | Maritime |
| Oct 2026 | Re:Build Manufacturing | Growth round | $2.1B | Framingham, MA | Advanced Manufacturing |
| Oct 2026 | ASI (Air Space Intelligence) | Series C | $325M | Boston, MA | Autonomy & AI |
| Oct 2025 | MatrixSpace | Series B | $20M | Burlington, MA | Sensors & Comms |
| Sep 2025 | Blue Water Autonomy | Series A | $50M | Boston, MA | Maritime |
All companies
Full directoryCorridian
Boston, MassachusettsBuilds ultra-large autonomous underwater vehicles that haul containerized payloads over thousands of nautical miles for undersea logistics.
Re:Build Manufacturing
Framingham, MassachusettsAcquires and builds US engineering and manufacturing businesses producing hard-tech products, including drone batteries and defense components.
ASI (Air Space Intelligence)
Boston, MassachusettsBuilds AI planning and monitoring software for air traffic, airline and military operations, including command and control for the Army and Air Force.
MatrixSpace
Burlington, MassachusettsMakes portable AI-enhanced radar and edge sensing units that detect, classify and track small drones for counter-UAS and airspace awareness.
Blue Water Autonomy
Boston, MassachusettsBuilds long-range, fully autonomous ships of 100 to 150 feet designed from the keel up for US Navy fleet missions.
Sea Machines Robotics
Boston, MassachusettsMakes autonomy and remote command systems that convert crewed vessels into uncrewed boats, plus the STORMRUNNER autonomous craft.
Questions
How many defense tech startups are in Massachusetts?
We track 6 defense and dual-use startups headquartered in Massachusetts, as of November 14, 2026.
Which Massachusetts defense tech startup has raised the most?
Re:Build Manufacturing, with >$4B in disclosed funding among the companies we track.
Which cities in Massachusetts have the most defense tech startups?
Boston (4), Framingham (1) and Burlington (1), counting the companies in our directory as of November 14, 2026.