SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Phase Four logo Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites vs SatEnlight Develops optical multiplexing receivers for satellite free-space communication using orbital angular momentum of light SatEnlight logo
HEAD-TO-HEAD1 shared sector
Phase Four SatEnlight
Founded 2015 2024
Headquarters Hawthorne, California Milan, Italy
Type private private
Status closed operating
Employees 5 3
Total funding $35.8M $1.3M
Latest round Series C Seed
Sectors Space Propulsion, Satellite Components & Subsystems Satellite Components & Subsystems, Satellite Communications
Products listed 4 1
Federal contracts
Launches
Leaders listed Steve Kiser, M. Umair Siddiqui, Simon Halpern Matteo Vismara, Matteo Mirigliano, Paolo Milani
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Phase Four and SatEnlight compare?

Both companies work in Satellite Components & Subsystems. Phase Four was founded in 2015 and SatEnlight in 2024.

Which is larger, Phase Four or SatEnlight?

Phase Four reports the larger workforce, with 5 employees versus 3.

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