SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
i-Space logo i-Space Develops solid and liquid-fueled launch vehicles including the Hyperbola series, with China's first privately-built orbital rocket and a reusable methane rocket in development vs Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites Phase Four logo
HEAD-TO-HEAD1 shared sector
i-Space Phase Four
Founded 2016 2015
Headquarters China Hawthorne, California
Type private private
Status operating closed
Employees 5
Total funding $473.7M $35.8M
Latest round Series D++ Series C
Sectors Launch Services, Space Propulsion Space Propulsion, Satellite Components & Subsystems
Products listed 3 4
Federal contracts
Launches 9 (44%)
Leaders listed Peng Xiaobo Steve Kiser, M. Umair Siddiqui, Simon Halpern
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do i-Space and Phase Four compare?

Both companies work in Space Propulsion. i-Space was founded in 2016 and Phase Four in 2015.

Which has more launches, i-Space or Phase Four?

i-Space leads with 9 tracked launches (44% success rate).

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