ArianeGroup European joint venture developing and manufacturing the Ariane 6 launch vehicle and France's M51 ballistic missile Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space 
| ArianeGroup | Sierra Space | |
|---|---|---|
| Founded | 2015 | 2021 |
| Headquarters | France and Germany, France | Louisville, Colorado |
| Type | private | private |
| Status | operating | operating |
| Employees | 8,700 | 1,072 |
| Total funding | $95M | $2.2B |
| Latest round | Series A | Series C |
| Sectors | Launch Services, Space Propulsion | Satellite Manufacturing, Space Propulsion, Space Stations & Habitats |
| Products listed | 10 | 7 |
| Federal contracts | — | 1 ($6.5M) |
| Launches | — | — |
| Leaders listed | — | Dan Jablonsky, Janet Kavandi, Troy Lahr |
| News mentions | 0 | 0 |
How do ArianeGroup and Sierra Space compare?
Both companies work in Space Propulsion. ArianeGroup was founded in 2015 and Sierra Space in 2021.
Which is larger, ArianeGroup or Sierra Space?
ArianeGroup reports the larger workforce, with 8,700 employees versus 1,072.
Which has more US federal contracts, ArianeGroup or Sierra Space?
Sierra Space has been awarded more, with $6.5M across 1 awards.