SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Busek logo Busek Designs and manufactures electric propulsion systems for spacecraft, including Hall effect, electrospray, RF ion, and green monopropellant thrusters vs Portal Space Systems Manufactures solar-thermal-propelled spacecraft buses for high-delta-v, multi-orbit maneuverability and tactically responsive space operations Portal Space Systems logo
HEAD-TO-HEAD1 shared sector
Busek Portal Space Systems
Founded 1985 2021
Headquarters Massachusetts Bothell, Washington
Type private private
Status operating operating
Employees 107 22
Total funding $200K $20M
Latest round Grant Seed
Sectors Space Propulsion, Satellite Components & Subsystems Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion
Products listed 9 3
Federal contracts
Launches
Leaders listed Vlad Hruby, James Szabo, John Meikle Jeff Thornburg, Ian Vorbach, Prashaanth Ravindran
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Busek and Portal Space Systems compare?

Both companies work in Space Propulsion. Busek was founded in 1985 and Portal Space Systems in 2021.

Which is larger, Busek or Portal Space Systems?

Busek reports the larger workforce, with 107 employees versus 22.

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