SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Portal Space Systems logo Portal Space Systems Manufactures solar-thermal-propelled spacecraft buses for high-delta-v, multi-orbit maneuverability and tactically responsive space operations vs Space Machines Company Builds rapid-response orbital servicing vehicles for close-proximity inspection, monitoring, and protection of space assets across all Earth orbits Space Machines Company logo
HEAD-TO-HEAD1 shared sector
Portal Space Systems Space Machines Company
Founded 2021 2019
Headquarters Bothell, Washington Botany, Australia
Type private private
Status operating operating
Employees 22 38
Total funding $20M $5.5M
Latest round Seed Grant
Sectors Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion In-Orbit Servicing & Assembly, Satellite Manufacturing, Space Domain Awareness
Products listed 3 4
Federal contracts
Launches
Leaders listed Jeff Thornburg, Ian Vorbach, Prashaanth Ravindran Rajat Kulshrestha, George Freney, Mark Ramsey
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Portal Space Systems and Space Machines Company compare?

Both companies work in Satellite Manufacturing. Portal Space Systems was founded in 2021 and Space Machines Company in 2019.

Which is larger, Portal Space Systems or Space Machines Company?

Space Machines Company reports the larger workforce, with 38 employees versus 22.

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.