ArianeGroup European joint venture developing and manufacturing the Ariane 6 launch vehicle and France's M51 ballistic missile Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites 
| ArianeGroup | Phase Four | |
|---|---|---|
| Founded | 2015 | 2015 |
| Headquarters | France and Germany, France | Hawthorne, California |
| Type | private | private |
| Status | operating | closed |
| Employees | 8,700 | 5 |
| Total funding | $95M | $35.8M |
| Latest round | Series A | Series C |
| Sectors | Launch Services, Space Propulsion | Space Propulsion, Satellite Components & Subsystems |
| Products listed | 10 | 4 |
| Federal contracts | — | — |
| Launches | — | — |
| Leaders listed | — | Steve Kiser, M. Umair Siddiqui, Simon Halpern |
| News mentions | 0 | 0 |
How do ArianeGroup and Phase Four compare?
Both companies work in Space Propulsion. ArianeGroup was founded in 2015 and Phase Four in 2015.
Which is larger, ArianeGroup or Phase Four?
ArianeGroup reports the larger workforce, with 8,700 employees versus 5.