Phase Four Overview

  • Year Founded
  • 2015

Year Founded

  • Status
  • Private

  • Employees
  • 44

Employees

  • Latest Deal Type
  • Series C

  • Latest Deal Amount
  • $12.9M

  • Investors
  • 21

Phase Four General Information

Description

Developer of satellite propulsion systems designed to economically advance space missions. The company's systems are small, low in mass, with a thrust-to-power ratio and a patented magnetic nozzle to direct thrust, enabling clients to reduce costs and maneuver their satellites into elliptical, geostationary and polar orbits.

Contact Information

Ownership Status
Privately Held (backing)
Financing Status
Venture Capital-Backed
Corporate Office
  • 12605 South Van Ness Avenue
  • Hawthorne, CA 90250-3321
  • United States
+1 (310)
Primary Industry
Aerospace and Defense
Corporate Office
  • 12605 South Van Ness Avenue
  • Hawthorne, CA 90250-3321
  • United States
+1 (310)

Phase Four Timeline

2022202320242025
Financing RoundCaptured Employee CountEstimated Employee Growth

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Phase Four Valuation & Funding

Deal Type Date Amount Raised to Date Post-Val Status Stage
14. Later Stage VC (Series C) 17-Jan-2025 $12.9M Completed Generating Revenue
13. Later Stage VC 13-Mar-2024 Completed Generating Revenue
12. Accelerator/Incubator 05-Oct-2023 Completed Generating Revenue
11. Debt - General 30-Jun-2022 Completed Generating Revenue
10. Debt - General 30-Sep-2021 Completed Generating Revenue
9. Later Stage VC (Series B) 11-Jun-2021 Completed Generating Revenue
8. Debt - PPP 30-Apr-2020 Completed Generating Revenue
7. Later Stage VC (Series A) 29-Jan-2020 Completed Generating Revenue
6. Seed Round 23-May-2018 $9.3M $11.6M Completed Startup
5. Seed Round 04-Jan-2016 $1.1M $2.2M Completed Startup
To view Phase Four’s complete valuation and funding history, request access »

Phase Four Cap Table

Stock # of Shares
Authorized
Par Value Dividend Rate (%) Original
Issue Price
Liquidation Liquidation
Pref. Multiple
Conversion Price % Owned
Series B-2
Series B-1
Series A-2
Series A-1
Seed 6
Seed 5
Seed 4
Seed 3
Seed 2 559,198 $0.000100 8% $1.97 $1.97 $1.97 0.59%
Seed 1 1,128,675 $0.000100 8% $0.99 $0.99 $0.99 1.18%
To view Phase Four’s complete cap table history, request access »

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Opportunity Score

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Exit Type

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Phase Four Comparisons

Description
Primary
Industry
HQ Location
Employees
Total Raised
Post Valuation
Last
Financing
Details
Developer of satellite propulsion systems designed to economically advance space missions. The company's systems are sma
Aerospace and Defense
Hawthorne, CA
44 As of 2025

Burlington, VT
 

Schwechat, Austria
 
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Phase Four Competitors (7)

One of Phase Four’s 7 competitors is Benchmark Space Systems, a Venture Capital-Backed company based in Burlington, VT.

Company Name Financing Status Location Employees Total Raised Last Financing Date/Type Last Financing Amount
Benchmark Space Systems Venture Capital-Backed Burlington, VT
Enpulsion Venture Capital-Backed Schwechat, Austria
Revolution Space Venture Capital-Backed Boston, MA
Orbion Space Technology Venture Capital-Backed Houghton, MI
ThrustMe Venture Capital-Backed Paris, France
You’re viewing 5 of 7 competitors. Get the full list »

Phase Four Patents

Phase Four Recent Patent Activity

Publication ID Patent Title Status First Filing Date Technology (CPC) Citations
US-12196158-B2 Multimode propulsion system Active 31-Oct-2022
US-20240263599-A1 Multimode propulsion system Active 31-Oct-2022
EP-4026159-A1 Propellant injector system for plasma production devices and thrusters Pending 04-Sep-2019
EP-4026159-A4 Propellant injector system for plasma production devices and thrusters Pending 04-Sep-2019
US-12195205-B2 Propellant injector system for plasma production devices and thrusters Active 04-Sep-2019 F03H1/0012
To view Phase Four’s complete patent history, request access »

Phase Four Signals

Growth Rate

Weekly
Growth
Weekly Growth

Size Multiple

Median
Size Multiple

Key Data Points

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Phase Four Investors (21)

Investor Name Investor Type Holding Investor Since Participating Rounds
Angel (individual) Minority
Leonidas Capital Partners PE/Buyout Minority
Hyperspace Challenge Accelerator/Incubator
Arden Road Investments Venture Capital Minority
Industrious Ventures Venture Capital Minority
You’re viewing 5 of 21 investors. Get the full list »

Phase Four FAQs

  • When was Phase Four founded?

    Phase Four was founded in 2015.

  • Where is Phase Four headquartered?

    Phase Four is headquartered in Hawthorne, CA.

  • What is the size of Phase Four?

    Phase Four has 44 total employees.

  • What industry is Phase Four in?

    Phase Four’s primary industry is Aerospace and Defense.

  • Is Phase Four a private or public company?

    Phase Four is a Private company.

  • What is Phase Four’s current revenue?

    The current revenue for Phase Four is .

  • How much funding has Phase Four raised over time?

    Phase Four has raised $63.8M.

  • Who are Phase Four’s investors?

    , Leonidas Capital Partners, Hyperspace Challenge, Arden Road Investments, and Industrious Ventures are 5 of 21 investors who have invested in Phase Four.

  • Who are Phase Four’s competitors?

    Benchmark Space Systems, Enpulsion, Revolution Space, Orbion Space Technology, and ThrustMe are some of the 7 competitors of Phase Four.

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