| Eta Space | Phase Four | |
|---|---|---|
| Founded | 2019 | 2015 |
| Headquarters | Rockledge, Florida, USA | Hawthorne, California, USA |
| Type | private | private |
| Status | operating | closed |
| Employees | 10 | 5 |
| Total funding | $27.2M | $35.8M |
| Latest round | Grant | Series C |
| Sectors | Space Transportation & Logistics, Lunar Services, Space Propulsion | Space Propulsion, Satellite Components & Subsystems |
| Products listed | 6 | 4 |
| Federal contracts | — | — |
| Launches | — | — |
| Leaders listed | Dr. William Notardonato | Steve Kiser, M. Umair Siddiqui, Simon Halpern |
| News mentions | 0 | 0 |
How do Eta Space and Phase Four compare?
Both companies work in Space Propulsion. Eta Space was founded in 2019 and Phase Four in 2015.
Which is larger, Eta Space or Phase Four?
Eta Space reports the larger workforce, with 10 employees versus 5.