AlterG, Inc. is dedicated to getting people moving. Everyday, AlterG® is researching, innovating and uncovering new technologies and applications of those technologies. From our exclusive, NASA-patented Differential Air Pressure unweighting technology used in our Anti-Gravity Treadmills® to the world’s first intuitive Bionic Leg, we’re delivering industry-leading innovation.

AlterG products and support are constantly being applied to shorten recovery times, reduce injury, and improve mobility for patients. At the same time, AlterG enables practitioners to develop new services and revenue streams.

Ultimately, AlterG is committed to creating and uncovering new technologies that help advance the possibilities for recovery, training and improved mobility. The Anti-Gravity Treadmills and industry-leading Bionic Legs are just the beginning.

Whether that means running a marathon or walking to the living room, our goal is to bring you products and technology to keep you healthy and on your feet.

Since AlterG founder Sean Whalen and his father developed the technology for the first Anti-Gravity Treadmill in their family garage, AlterG has sought to advance what’s possible during physical therapy and athletic training. That’s why, in May 2013, we incorporated the Bionic Leg as our second mobility enhancement product.

As a member of the physical therapy and athletic training communities, we love seeing our products used in a wide-variety of ways to improve patient outcomes and help athletes achieve personal bests.

We are committed both to the end users as well as the clinics, hospitals, and universities that use the Anti-Gravity Treadmill and the Bionic Leg in therapy and training. As a member of these communities, we are looking forward to future developments that continue to change the way physical therapy and sports medicine are practiced.

Company Growth (employees)
Fremont, US
Size (employees)
92 (est)-6%
AlterG was founded in 2005 and is headquartered in Fremont, US

Key People at AlterG

Steve Basta

Steve Basta

Kevin Davidge

Kevin Davidge

Chief Financial Officer
Dev Mishra

Dev Mishra

Chief Medical Officer
Mark Gainey

Mark Gainey


AlterG Office Locations

AlterG has office in Fremont
Fremont, US

AlterG Metrics

AlterG Summary

Founding Date


Total Funding

$50.3 m

Latest funding size

$15 m

Time since last funding

over 1 year


We estimate that AlterG's latest funding round in July 2015 was $15 m. In total, AlterG has raised $50.3 m

AlterG Online Presence

AlterG Company Life

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