ABOUT

OUR MISSION

We Change the Way Things Move in Space. Our mission is to provide today’s and tomorrow’s in-space propulsion systems for a variety of satellites, a variety of fuels, and a variety of mission types, ensuring constellation operators have the broadest set of options to perform their missions.

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Phase Four Executive Team

Chief Executive Officer

Steve Kiser

Chief Operating Officer

Mary Blomer-Santos

President and CTO

Umair Siddiqui

VP, Advanced Development

Jason Wallace

Board of Directors

Jim Bridenstine

Phase Four Board of Advisors

Ed Perlmutter

Jeff Grant

Kevin O’Connell

William Shelton

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What We're Doing

Phase Four is developing a new paradigm of in-space propulsion for the rapidly expanding space economy. From large constellations in LEO to new missions and cutting edge capabilities, our team is the key to mission success. We are focused on building a reliable supply of high performance thrusters, focusing on manufacturing assurance early in the engineering process.

Learn More about the Production Flow →