Phase Four Competitors and Similar CompaniesClear all

Phase Four's competitors and similar companies include AAE Aerospace, Stanford Mu, Apollo Fusion and Revolution Space.
Phase Four
Phase Four
Phase Four is a company that develops electric propulsion systems for satellites.
AAE Aerospace
AAE Aerospace
AAE Aerospace (also known as American Automated Engineering) is a company that specializes in rocket propulsion, insulation, and composite structure technologies.
Stanford Mu
Stanford Mu
Stanford Mu Corporation (SMC) is a company that designs, develops, and manufactures propulsion system components for the space and defense sectors.
Apollo Fusion
Apollo Fusion
Apollo Fusion is a company that develops electric space propulsion systems.
Revolution Space
Revolution Space
Revolution Space (also known as Accion Systems) is a company that develops in-space propulsion systems for satellite platforms.
Founding Date
Founding Date
2015
Founding Date
1967
Founding Date
1992
Founding Date
2016
Founding Date
2014
Type
Type
Private
Type
Subsidiary
Type
Private
Type
Subsidiary
Type
Private
Tags
Locations
Locations
Hawthorne, US HQ
Locations
Huntington Beach, US HQ
Locations
Carson, US HQ
Locations
Alameda, US HQ
Locations
Boston, US HQ
Employees
Employees
407% decrease
Employees
215
Employees
137% decrease
Employees
1
Employees
462% decrease

Operating

Industries Served
Industries Served
5 (Jan, 2024)
Industries Served
2 (May, 2024)
Industries Served
2 (May, 2024)
Industries Served
N/A
Industries Served
N/A
Partners
Partners
N/A
Partners
N/A
Partners
16 (May, 2024)
Partners
N/A
Partners
8 (Sep, 2023)
Product Lines
Product Lines
N/A
Product Lines
3 (May, 2024)
Product Lines
15 (May, 2024)
Product Lines
N/A
Product Lines
N/A

Funding

Latest funding round
Latest funding round
$ 26m (almost 5 years ago)
Latest funding round
N/A
Latest funding round
N/A
Latest funding round
N/A
Latest funding round
$ 42m (almost 5 years ago)
Total funding raised
Total funding raised
$ 30.7m
Total funding raised
N/A
Total funding raised
N/A
Total funding raised
$ 18m
Total funding raised
$ 68.5m
For sources of this data, please see the company profile

View Company Profiles

AAE Aerospace
HQ
Huntington Beach, US

AAE Aerospace (also known as American Automated Engineering) is a company that specializes in rocket propulsion, insulation, and composite structure technologies.

View company
Stanford Mu
HQ
Carson, US
Employees
13↓ 7% decrease

Stanford Mu Corporation (SMC) is a company that designs, develops, and manufactures propulsion system components for the space and defense sectors.

View company
Apollo Fusion
HQ
Alameda, US

Apollo Fusion is a company that develops electric space propulsion systems.

View company
Revolution Space
HQ
Boston, US
Employees
46↓ 2% decrease

Revolution Space (also known as Accion Systems) is a company that develops in-space propulsion systems for satellite platforms.

View company