SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Axiom Space logo Axiom Space Develops commercial space station modules, operates private astronaut missions to the ISS, and produces next-generation EVA spacesuits 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
Axiom Space Sierra Space
Founded 2016 2021
Headquarters Houston, Texas Louisville, Colorado
Type private private
Status operating operating
Employees 609 1,072
Total funding $850M $2.2B
Latest round Venture Series C
Sectors Space Stations & Habitats, Crew Systems & Life Support, In-Space Manufacturing Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 5 7
Federal contracts 3 ($547.4M) 1 ($6.5M)
Launches
Leaders listed Kam Ghaffarian, Michael T. Suffredini, Jonathan W. Cirtain Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Axiom Space and Sierra Space compare?

Both companies work in Space Stations & Habitats. Axiom Space was founded in 2016 and Sierra Space in 2021.

Which is larger, Axiom Space or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 609.

Which has more US federal contracts, Axiom Space or Sierra Space?

Axiom Space has been awarded more, with $547.4M across 3 awards.

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