SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Phantom Space logo Phantom Space Develops mass-manufactured small-lift launch vehicles, modular satellite systems, and an orbital data center constellation for in-space computing. 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
Phantom Space Sierra Space
Founded 2019 2021
Headquarters Tucson, Arizona, USA Louisville, Colorado, USA
Type private private
Status operating operating
Employees 30 1,072
Total funding $27.7M $2.2B
Latest round Series B Series C
Sectors Launch Services, Satellite Communications, Satellite Manufacturing Satellite Manufacturing, Space Propulsion, Space Stations & Habitats
Products listed 3 7
Federal contracts 1 ($6.5M)
Launches
Leaders listed Jim Cantrell, Michal Prywata, Worth Wray Dan Jablonsky, Janet Kavandi, Troy Lahr
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Phantom Space and Sierra Space compare?

Both companies work in Satellite Manufacturing. Phantom Space was founded in 2019 and Sierra Space in 2021.

Which is larger, Phantom Space or Sierra Space?

Sierra Space reports the larger workforce, with 1,072 employees versus 30.

Which has more US federal contracts, Phantom Space 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.