SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
EDGX logo EDGX Develops radiation-resilient onboard AI computers that enable satellites to process data and run inference directly in orbit vs Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites Phase Four logo
HEAD-TO-HEAD1 shared sector
EDGX Phase Four
Founded 2023 2015
Headquarters Ghent, Belgium Hawthorne, California
Type private private
Status operating closed
Employees 16 5
Total funding $2.7M $35.8M
Latest round Seed Series C
Sectors Satellite Components & Subsystems, Space Software & Mission Tools Space Propulsion, Satellite Components & Subsystems
Products listed 2 4
Federal contracts
Launches
Leaders listed Nick Destrycker, Wouter Benoot Steve Kiser, M. Umair Siddiqui, Simon Halpern
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do EDGX and Phase Four compare?

Both companies work in Satellite Components & Subsystems. EDGX was founded in 2023 and Phase Four in 2015.

Which is larger, EDGX or Phase Four?

EDGX reports the larger workforce, with 16 employees versus 5.

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