SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Apex logo Apex Designs and mass-manufactures standardized satellite bus platforms for commercial and government constellation deployments across LEO, MEO, and GEO orbits vs Epsilon3 Provides AI-powered procedure execution and resource management software for complex engineering, manufacturing, testing, and operations Epsilon3 logo
HEAD-TO-HEAD1 shared sector
Apex Epsilon3
Founded 2022 2021
Headquarters Los Angeles, California Los Angeles, California
Type private private
Status operating operating
Employees 234 29
Total funding $522M $18.8M
Latest round Series D Series A
Sectors Satellite Manufacturing, Satellite Components & Subsystems Space Software & Mission Tools, Satellite Manufacturing
Products listed 3 6
Federal contracts 1 ($22.0M)
Launches
Leaders listed Ian Cinnamon, Max Benassi, Adam Corey Laura Crabtree, Max Mednik, Audrey Fraijo
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Apex and Epsilon3 compare?

Both companies work in Satellite Manufacturing. Apex was founded in 2022 and Epsilon3 in 2021.

Which is larger, Apex or Epsilon3?

Apex reports the larger workforce, with 234 employees versus 29.

Which has more US federal contracts, Apex or Epsilon3?

Apex has been awarded more, with $22.0M across 1 awards.

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