SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Perigee Aerospace logo Perigee Aerospace Develops small-lift methane-fueled launch vehicles and manufactures liquid propulsion systems, composite tanks, and satellite thrusters vs Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space Sierra Space logo
HEAD-TO-HEAD1 shared sector
Perigee Aerospace Sierra Space
Founded 2018 2021
Headquarters Daejeon, South Korea Louisville, Colorado
Type private private
Status operating operating
Employees 16 1,072
Total funding $56.6M $2.2B
Latest round Series D Series C
Sectors Launch Services, Satellite Components & Subsystems, Space Propulsion Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 6 7
Federal contracts 1 ($6.5M)
Launches
Leaders listed Yoon Shin, Seonghyeon Seo, Alan Kim Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 15 0
SHARED SECTORS
FREQUENTLY ASKED

How do Perigee Aerospace and Sierra Space compare?

Both companies work in Space Propulsion. Perigee Aerospace was founded in 2018 and Sierra Space in 2021.

Which is larger, Perigee Aerospace or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 16.

Which has more US federal contracts, Perigee Aerospace or Sierra Space?

Sierra Space has been awarded more, with $6.5M across 1 awards.

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