SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Antaris logo Antaris Provides a cloud-based software platform for satellite mission design, digital twin simulation, flight software, and constellation operations vs K2 Space Designs and manufactures large-scale, high-power satellite platforms with in-house electric propulsion and avionics for multi-orbit missions. K2 Space logo
HEAD-TO-HEAD1 shared sector
Antaris K2 Space
Founded 2021 2022
Headquarters Los Altos, California, USA Torrance, California, USA
Type private private
Status operating operating
Employees 21 159
Total funding $7.7M $429M
Latest round Seed Series C
Sectors Space Software & Mission Tools, Satellite Manufacturing Satellite Manufacturing, Satellite Components & Subsystems, Space Propulsion
Products listed 4 3
Federal contracts
Launches
Leaders listed Tom Barton, Karthik Govindhasamy, John Trionfo Karan Kunjur, Neel Kunjur, John Plumb
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Antaris and K2 Space compare?

Both companies work in Satellite Manufacturing. Antaris was founded in 2021 and K2 Space in 2022.

Which is larger, Antaris or K2 Space?

K2 Space reports the larger workforce, with 159 employees versus 21.

Numbers refresh on every render against the live Space Index database. Federal contract data from USAspending.gov; launches from LaunchLibrary2.