Phase Four

phasefour.io

El Segundo, California, United States

11-50 employees

LinkedIn Profile

About Phase Four

aerospace, innovation engineering, space travel, space flight support, defense & space manufacturing, space technology, propellant storage, scientific research and development, space propulsion systems, services, government, aerospace product and parts manufacturing, propellant loading, b2b, rf plasma propulsion, hall-effect thruster, manufacturing, electrical equipment and components, monopropellant multi-mode systems, spacecraft maneuverability

Phase Four's Tech Stack

Decision Makers at Phase Four

2 contacts

Eric Huey

Director of Engineering

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Steve Kiser

Chief Executive Officer

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4 technologies detected · 2 decision makers · Emails available

Sales Outreach Angle

Phase Four uses Microsoft Office 365, Google Cloud Hosting, WP Engine among other technologies. Use StackWho to identify the right decision-maker email for targeted sales outreach, recruiting, or partnership development.

Phase Four's Position in the StackWho Database

• Phase Four is 1 of 1,981 defense & space companies tracked in StackWho.
• 1,955 defense & space companies in our database have verified decision-maker emails (99% of the cohort).
• 53,147 companies in California are in the StackWho database.
• 714 defense & space companies are in the 11-50 employee range (same size as Phase Four).

Technology detection from public web signals. Decision-maker contacts compiled from LinkedIn public profiles, company filings, and verified outbound testing. Methodology & sources · Updated July 2026.

Frequently Asked Questions

What technology does Phase Four use?

Phase Four uses Microsoft Office 365, Google Cloud Hosting, WP Engine, Remote. This data is sourced from StackWho's technology detection engine.

How do I contact the decision makers at Phase Four?

StackWho has verified email addresses for 2 decision makers at Phase Four. Pro members can access direct emails for the CEO, CTO, VP of Engineering, and other key contacts. Use StackWho to reach Phase Four directly for sales, recruiting, or partnerships.

What industry is Phase Four in?

Phase Four operates in the defense & space industry, headquartered in El Segundo, California, United States. StackWho tracks technology stacks and decision maker contacts for companies across all industries.

Can I export Phase Four's contact data?

Yes. StackWho Pro members can export decision maker contact data for Phase Four and similar companies to CSV. Use the export feature to build targeted prospect lists segmented by technology stack, industry, or location.