SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Exotrail logo Exotrail Designs electric propulsion systems for small satellites and operates orbital transfer vehicles for last-mile delivery and in-orbit services 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
Exotrail Sierra Space
Founded 2017 2021
Headquarters Massy, France Louisville, Colorado
Type private private
Status operating operating
Employees 141 1,072
Total funding $74.6M $2.2B
Latest round Series B Series C
Sectors Space Propulsion, Space Software & Mission Tools, Space Transportation & Logistics Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 9 7
Federal contracts 1 ($6.5M)
Launches
Leaders listed Jean-Luc Maria, Paul Lascombes, David Henri Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Exotrail and Sierra Space compare?

Both companies work in Space Propulsion. Exotrail was founded in 2017 and Sierra Space in 2021.

Which is larger, Exotrail or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 141.

Which has more US federal contracts, Exotrail 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.