CEO: Liz Muller
Headquarters: Berkeley, California
URL: www.deepfission.com
September 2025
APO Financing: $30,000,000

Trading Venue: NASDAQ GM (FISN)

Deep Fission is revolutionizing the energy landscape with innovative technology that places a small modular pressurized water reactor in a borehole approximately one mile underground. The company’s Gravity Nuclear Reactor™ approach combines established pressurized water reactor technology with a novel underground deployment model designed to simplify construction, enhance safety, and support rapid, scalable commercial deployment. Founded and led by a team of experienced scientists, engineers, and entrepreneurs, Deep Fission is focused on delivering reliable, low-carbon baseload power to meet growing electricity demand from utilities, industrial customers, and data centers. The company is currently advancing the development of its first reactor project in Parsons, Kansas and was selected for the Department of Energy’s Reactor Pilot Program.