SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.04
K2 Space logo K2 Space Designs and manufactures large-scale, high-power satellite platforms with in-house electric propulsion and avionics for multi-orbit missions vs Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites Phase Four logo
HEAD-TO-HEAD2 shared sectors
K2 Space Phase Four
Founded 2022 2015
Headquarters Torrance, California Hawthorne, California
Type private private
Status operating closed
Employees 159 5
Total funding $429M $35.8M
Latest round Series C Series C
Sectors Satellite Manufacturing, Satellite Components & Subsystems, Space Propulsion Space Propulsion, Satellite Components & Subsystems
Products listed 3 4
Federal contracts
Launches
Leaders listed Karan Kunjur, Neel Kunjur, John Plumb Steve Kiser, M. Umair Siddiqui, Simon Halpern
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do K2 Space and Phase Four compare?

Both companies work in Satellite Components & Subsystems, Space Propulsion. K2 Space was founded in 2022 and Phase Four in 2015.

Which is larger, K2 Space or Phase Four?

K2 Space reports the larger workforce, with 159 employees versus 5.

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