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 TransAstra Develops orbital logistics vehicles, asteroid capture systems, and space domain awareness telescopes for cislunar resource utilization TransAstra logo
HEAD-TO-HEAD1 shared sector
Portal Space Systems TransAstra
Founded 2021 2017
Headquarters Bothell, Washington Los Angeles, California
Type private private
Status operating operating
Employees 22 29
Total funding $20M $12M
Latest round Seed Seed
Sectors Space Transportation & Logistics, Satellite Manufacturing, Space Propulsion Space Resources & Mining, Space Domain Awareness, Space Transportation & Logistics
Products listed 3 7
Federal contracts
Launches
Leaders listed Jeff Thornburg, Ian Vorbach, Prashaanth Ravindran Joel Sercel, PhD., Nicole Shumaker, Alex Pilmer
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Portal Space Systems and TransAstra compare?

Both companies work in Space Transportation & Logistics. Portal Space Systems was founded in 2021 and TransAstra in 2017.

Which is larger, Portal Space Systems or TransAstra?

TransAstra reports the larger workforce, with 29 employees versus 22.

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