Exos Aerospace FAA-licensed reusable suborbital launch operator for payload testing, research, and orbital vehicle development Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space 
| Exos Aerospace | Sierra Space | |
|---|---|---|
| Founded | 2014 | 2021 |
| Headquarters | Greenville, Texas | Louisville, Colorado |
| Type | private | private |
| Status | operating | operating |
| Employees | — | 1,072 |
| Total funding | $7M | $2.2B |
| Latest round | Series A | Series C |
| Sectors | Launch Services, Space Propulsion, Suborbital & High-Altitude | Satellite Manufacturing, Space Propulsion, Space Stations & Habitats |
| Products listed | 7 | 7 |
| Federal contracts | — | 1 ($6.5M) |
| Launches | — | — |
| Leaders listed | David Mitchell, John Quinn, Neil Milburn | Dan Jablonsky, Janet Kavandi, Troy Lahr |
| News mentions | 0 | 0 |
How do Exos Aerospace and Sierra Space compare?
Both companies work in Space Propulsion. Exos Aerospace was founded in 2014 and Sierra Space in 2021.
Which has more US federal contracts, Exos Aerospace or Sierra Space?
Sierra Space has been awarded more, with $6.5M across 1 awards.