SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Perigee Aerospace logo Perigee Aerospace Develops small-lift methane-fueled launch vehicles and manufactures liquid propulsion systems, composite tanks, and satellite thrusters vs Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites Phase Four logo
HEAD-TO-HEAD2 shared sectors
Perigee Aerospace Phase Four
Founded 2018 2015
Headquarters Daejeon, South Korea Hawthorne, California, USA
Type private private
Status operating closed
Employees 16 5
Total funding $56.6M $35.8M
Latest round Series D Series C
Sectors Launch Services, Satellite Components & Subsystems, Space Propulsion Space Propulsion, Satellite Components & Subsystems
Products listed 6 4
Federal contracts
Launches
Leaders listed Yoon Shin, Seonghyeon Seo, Alan Kim Steve Kiser, M. Umair Siddiqui, Simon Halpern
News mentions 15 0
SHARED SECTORS
FREQUENTLY ASKED

How do Perigee Aerospace and Phase Four compare?

Both companies work in Satellite Components & Subsystems, Space Propulsion. Perigee Aerospace was founded in 2018 and Phase Four in 2015.

Which is larger, Perigee Aerospace or Phase Four?

Perigee Aerospace 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.