SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
Sierra Space logo Sierra Space Designs and manufactures satellite platforms, reusable spaceplanes, expandable habitats, and propulsion systems for national security and civil space vs York Space Systems Designs, mass-manufactures, and operates standardized spacecraft platforms and end-to-end mission solutions for national security and commercial constellation customers York Space Systems logo
HEAD-TO-HEAD1 shared sector
Sierra Space York Space Systems
Founded 2021 2014
Headquarters Louisville, Colorado Greenwood Village, Colorado
Type private public
Status operating operating
Employees 1,072 367
Total funding $2.2B
Latest round Series C
Sectors Satellite Manufacturing, Space Propulsion, Space Stations & Habitats Satellite Manufacturing, Ground Segment & Networks, Space Defense Systems
Products listed 7 5
Federal contracts 1 ($6.5M)
Launches
Leaders listed Dan Jablonsky, Janet Kavandi, Troy Lahr Dirk Wallinger, Mike Lajczok, Melanie Preisser
News mentions 0 13
SHARED SECTORS
FREQUENTLY ASKED

How do Sierra Space and York Space Systems compare?

Both companies work in Satellite Manufacturing. Sierra Space was founded in 2021 and York Space Systems in 2014.

Which is larger, Sierra Space or York Space Systems?

Sierra Space reports the larger workforce, with 1,072 employees versus 367.

Which has more US federal contracts, Sierra Space or York Space Systems?

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.