Deep Fission, Inc. is developing the Gravity Reactor, a small modular nuclear reactor (SMR) utilizing pressurized water reactor (PWR) technology adapted for emplacement in deep boreholes approximately one mile underground. The company focuses on leveraging geological formations for enhanced safety and cost efficiencies while targeting initial pilot deployment within three years. Recent filings reveal ongoing engineering validation, prototype drilling at its Kansas site, and active participation in the DOE Reactor Pilot Program. Despite technological promise, Deep Fission faces typical early-stage risks including capital needs, regulatory uncertainty, and operational scale-up hurdles. Its financial position shows solid liquidity but continued losses reflective of pre-commercial development.