Insights

Acquisition Dynamics Phase Four has recently divested propulsion assets to Apex and Quantum Space, indicating ongoing consolidation in the smallsat propulsion sector. This presents an opportunity to engage buyers or integrators who need proven Maxwell-based propulsion capabilities or turnkey plasma solutions as part of their platform offerings.

Expedited Space Propulsion The company emphasizes high performance, lower cost, and shorter delivery timelines for Hall Effect Thruster systems, with doubled lifespan versus legacy designs. This positions Phase Four as a potential supplier for satellite operators and integrators seeking cost-effective, reliable propulsion to accelerate constellation deployments.

Strategic Partnerships Past collaborations with Orbit Fab and interest in in-orbit refueling interfaces (RAFTI) signal openness to ecosystem partnerships. Targeted outreach to in-orbit servicing players and refueling providers could unlock co-marketing, joint development, or bundled propulsion and refueling solutions.

Growth Readiness With revenue in the low millions and a capital raise history of 36 million, Phase Four is positioned as a scalable supplier for small to mid-size satellite missions. Engage mid-tier satellite companies and small launch/ops firms seeking reliable propulsion without prohibitive cost.

Competitive Positioning Phase Four markets itself as a lower-cost, longer-lasting alternative to traditional electric propulsion, addressing electrode and high-voltage electronics failure points. Use this positioning to approach customers evaluating cost of ownership and mission reliability for constellations or rapid-deploy platforms.

Similar companies to Phase Four

Phase Four Tech Stack

Phase Four uses 8 technology products and services including Google AdSense, Grafana, iCIMS, and more. Explore Phase Four's tech stack below.

Media & News

Phase Four's Email Address Formats

Phase Four uses at least 3 email formats:
Phase Four Email FormatsExamplePercentage
First.Last@phasefour.ioJohn.Doe@phasefour.io
82%
First@phasefour.ioJohn@phasefour.io
16%
Middle@phasefour.ioMichael@phasefour.io
2%

Frequently Asked Questions

What is Phase Four's phone number?

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You can contact Phase Four's main corporate office by phone at . For more prospecting data, LeadIQ has access to up-to-date and accurate contact information within our platform. Find, capture, and sync contact data to your CRM and sales tools in one click.

What is Phase Four's official website and social media links?

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Phase Four's official website is phasefour.io and has social profiles on LinkedIn and Crunchbase.

How much revenue does Phase Four generate?

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As of October 2026, Phase Four's annual revenue is estimated to be $1M - $10M.

What is Phase Four's SIC code and NAICS code?

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Phase Four's SIC code is 3761 - Guided Missiles and Space Vehicles and NAICS code is 336414 - Guided Missile and Space Vehicle Manufacturing.

How many employees does Phase Four have currently?

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As of October 2026, Phase Four has approximately 22 employees across 3 continents, including North America, Africa and Europe. Key team members include Chief Information Officer: C. E., President: C. B. and Head Of Information Technology: I. K. Explore Phase Four's employee directory with LeadIQ.

What industry does Phase Four belong to?

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Phase Four operates in the Defense and Space Manufacturing industry.

What technology does Phase Four use?

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Phase Four's tech stack includes Google AdSense, Grafana, iCIMS, SOLIDWORKS, Slack, LabVIEW, Piwik PRO Core and Atlassian Confluence.

What is Phase Four's email format?

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Phase Four's email format typically follows the pattern of First.Last@phasefour.io. Find more Phase Four email formats with LeadIQ.

How much funding has Phase Four raised to date?

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As of October 2026, Phase Four has raised $36M in funding. The last funding round occurred on Jan 09, 2025.

When was Phase Four founded?

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Phase Four was founded in 2015.
Phase Four logo

Phase Four

Defense and Space ManufacturingCalifornia, United States11-50 Employees

Phase Four is a defense and space manufacturing company based in Hawthorne, California, that concentrates on satellite propulsion. The business aims to support the rapid expansion of satellite constellations by addressing the propulsion subsystem, a historically costly and high‑risk part of spacecraft design. Its approach emphasizes reliability and manufacturability by reducing common failure points and simplifying fabrication compared with legacy systems. The customers it serves are satellite operators and spacecraft developers seeking dependable propulsion with shorter lead times. In 2023, Phase Four announced the Maxwell Block 3 turn-key propulsion thruster, reflecting ongoing product development.

The company describes its propulsion solution as delivering performance comparable to traditional options at a lower price and with faster delivery, while offering a longer expected lifespan. This aligns with a focus on enabling broader maneuverability and operation for small to mid-sized satellite fleets. Within the defense and space manufacturing sector, Phase Four remains a relatively small firm concentrating on advancing its propulsion technology.

Section iconCompany Overview

Phone number
SIC Code
3761 - Guided Missiles and Space Vehicles
NAICS Code
336414 - Guided Missile and Space Vehicle Manufacturing
Founded
2015
Employees
11-50

Section iconFunding & Financials

  • $36M

    Phase Four has raised a total of $36M of funding over 8 rounds. Their latest funding round was raised on Jan 09, 2025 as a Series C.

  • $1M - $10M

    Phase Four's revenue is estimated to be in the range of $1M - $10M

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