SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Phase Four logo Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites vs Spacety Small satellite manufacturer operating a dual-band SAR constellation for all-weather Earth observation and providing satellites-as-a-service for rapid in-orbit technology demonstrations Spacety logo
HEAD-TO-HEAD1 shared sector
Phase Four Spacety
Founded 2015 2016
Headquarters Hawthorne, California, USA Changsha, China
Type private private
Status closed operating
Employees 5 200
Total funding $35.8M 250000000
Latest round Series C Private Equity
Sectors Space Propulsion, Satellite Components & Subsystems Earth Observation & Remote Sensing, Satellite Manufacturing, Satellite Components & Subsystems
Products listed 4 4
Federal contracts
Launches
Leaders listed Steve Kiser, M. Umair Siddiqui, Simon Halpern Justin Yang Feng, Ren Weijia
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Phase Four and Spacety compare?

Both companies work in Satellite Components & Subsystems. Phase Four was founded in 2015 and Spacety in 2016.

Which is larger, Phase Four or Spacety?

Spacety reports the larger workforce, with 200 employees versus 5.

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