SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Sierra Space logo Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space vs Space Machines Company Builds rapid-response orbital servicing vehicles for close-proximity inspection, monitoring, and protection of space assets across all Earth orbits Space Machines Company logo
HEAD-TO-HEAD1 shared sector
Sierra Space Space Machines Company
Founded 2021 2019
Headquarters Louisville, Colorado Botany, Australia
Type private private
Status operating operating
Employees 1,072 38
Total funding $2.2B $5.5M
Latest round Series C Grant
Sectors Satellite Manufacturing, Space Propulsion, Space Stations & Habitats In-Orbit Servicing & Assembly, Satellite Manufacturing, Space Domain Awareness
Products listed 7 4
Federal contracts 1 ($6.5M)
Launches
Leaders listed Dan Jablonsky, Janet Kavandi, Troy Lahr Rajat Kulshrestha, George Freney, Mark Ramsey
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Sierra Space and Space Machines Company compare?

Both companies work in Satellite Manufacturing. Sierra Space was founded in 2021 and Space Machines Company in 2019.

Which is larger, Sierra Space or Space Machines Company?

Sierra Space reports the larger workforce, with 1,072 employees versus 38.

Which has more US federal contracts, Sierra Space or Space Machines Company?

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.