California

3

3H Communication Systems PRIVATE

operating

RF and microwave filter manufacturer for military, commercial, and satellite applications

A

Aalyria PRIVATE

operating

Develops network orchestration software and laser communication terminals that unify satellite, airborne, maritime, and ground networks into a single managed system

A

Antaris PRIVATE

operating

Provides a cloud-based software platform for satellite mission design, digital twin simulation, flight software, and constellation operations

A

Apex PRIVATE

operating

Designs and mass-manufactures standardized satellite bus platforms for commercial and government constellation deployments across LEO, MEO, and GEO orbits

A

Astra Space PRIVATE

operating

Develops small-lift launch vehicles with mobile launch infrastructure and manufactures Hall-effect electric propulsion systems for satellite constellations

A

Astranis PRIVATE

operating

Builds small geostationary communications satellites for dedicated regional broadband and leases them to customers as a service

A

AstroForge PRIVATE

operating

Develops spacecraft and in-situ refining technology to extract and process platinum group metals from metallic near-Earth asteroids

A

Astrolab PRIVATE

operating

Designing and operating commercial planetary rovers for lunar and Mars surface mobility

C

Cambrian Works PRIVATE

operating

Space-to-space mesh networking hardware and software for multi-orbit satellite connectivity

C

Charter Space PRIVATE

operating

Provides mission management software and insurance brokerage services for satellite operators, connecting engineering data with underwriting to expand spacecraft coverage

C

Cowboy Space PRIVATE

operating

Develops space-based solar power satellites that collect sunlight in low Earth orbit and transmit energy to portable ground receivers via infrared lasers

E

Epsilon3 PRIVATE

operating

Provides AI-powered procedure execution and resource management software for complex engineering, manufacturing, testing, and operations

E

ExoAnalytic Solutions PRIVATE

operating

Operates a global optical telescope network and develops space domain awareness, missile defense, and national security space technologies

G

GITAI PRIVATE

operating

Develops space robotic systems for in-orbit servicing, satellite assembly, and lunar infrastructure construction

G

GeoOptics PRIVATE

operating

Earth observation company collecting atmospheric, surface, and subsurface data from a cubesat constellation

H

Hadrian PRIVATE

operating

Operates autonomous precision manufacturing factories producing components for aerospace and defense companies, powered by AI-driven factory automation software

I

Impulse Space PRIVATE

operating

Designs and operates orbital transfer vehicles that move payloads between orbits using high-thrust chemical propulsion, delivering to GEO in under a day

I

Innoflight PRIVATE

operating

Cyber-secure, radiation-tolerant space avionics for defense and commercial satellite missions

I

Inversion Space PRIVATE

operating

Develops autonomous reentry capsules for on-demand cargo delivery from orbit to anywhere on Earth in under an hour

K

K2 Space PRIVATE

operating

Designs and manufactures large-scale, high-power satellite platforms with in-house electric propulsion and avionics for multi-orbit missions

K

Kratos Defense & Security Solutions PUBLIC

operating

Defense technology company developing unmanned systems, satellite ground systems, and C5ISR solutions for U.S. national

L

LeoLabs PRIVATE

operating

Operates a global phased-array radar network providing orbital tracking, collision avoidance, and space domain awareness services for low Earth orbit

L

Loft Orbital PRIVATE

operating

Operates a satellite-as-a-service platform that integrates, deploys, and operates customer payloads and AI applications on standardized LEO spacecraft

L

Long Wall PRIVATE

operating

Develops containerized missile defense systems, low-cost liquid boosters for flight testing, and rapidly deployable ground support equipment

L

Longshot PRIVATE

operating

Ground-based kinetic accelerator company targeting low-cost orbital launch and hypersonic testing