SPACE INDEX COMPANIES INSIGHTS SECTORS PRODUCTS NEWS BLOG ANSWERS RESEARCH ABOUT FOR COMPANIES BUILD / 2026.06.03
Frontier Space Technologies logo Frontier Space Technologies Develops autonomous miniaturized laboratories and bioreactor platforms for pharmaceutical research and biomanufacturing in microgravity vs Phase Four Developed electrodeless radio-frequency and multi-mode electric propulsion systems for satellites Phase Four logo
HEAD-TO-HEAD1 shared sector
Frontier Space Technologies Phase Four
Founded 2021 2015
Headquarters Nottingham, United Kingdom Hawthorne, California, USA
Type private private
Status operating closed
Employees 9 5
Total funding $720K $35.8M
Latest round Seed Series C
Sectors In-Space Manufacturing, Satellite Components & Subsystems Space Propulsion, Satellite Components & Subsystems
Products listed 3 4
Federal contracts
Launches
Leaders listed Dr. Aqeel Shamsul, Zaria Serfontein, Mat Zalasiewicz Steve Kiser, M. Umair Siddiqui, Simon Halpern
News mentions 0 0
SHARED SECTORS
FREQUENTLY ASKED

How do Frontier Space Technologies and Phase Four compare?

Both companies work in Satellite Components & Subsystems. Frontier Space Technologies was founded in 2021 and Phase Four in 2015.

Which is larger, Frontier Space Technologies or Phase Four?

Frontier Space Technologies reports the larger workforce, with 9 employees versus 5.

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