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Deep Fission, Inc.

corporate_fare Company Profile

Deep Fission, Inc.

FISN·NASDAQ·Energy & Transportation·CIK 0001432353

Deep Fission, Inc. (Nasdaq: FISN) is an advanced nuclear energy technology company focused on developing and deploying small modular pressurized water reactors. The company's innovative approach involves placing these reactors in boreholes approximately one mile underground. This method leverages subsurface conditions, including hydrostatic pressure from a water column and surrounding geological formations, to support reactor operation, cooling, structural confinement, and shielding. This design aims to reduce reliance on large surface containment structures and other safety infrastructure associated with conventional nuclear power plants. Deep Fission's technology, which they refer to as the Gravity Reactor, integrates established pressurized water reactor technology with proven geothermal components and deep borehole drilling techniques. This integration is intended to simplify construction, enhance safety, improve security, and enable faster deployment timelines, ultimately leading to lower capital and operating costs compared to traditional nuclear facilities. Each 3x3 Gravity Reactor is designed to produce up to 15 megawatts of electric power output. The company was founded in 2023 by Elizabeth and Richard Muller and is currently building its first reactor in 2026, having been selected for the Department of Energy's Reactor Pilot Program. Deep Fission's commercialization strategy involves a phased deployment plan, with a goal for commercial operation between 2027 and 2028. The company's focus is primarily within the United States, addressing growing electricity demand from utilities, industrial customers, and data centers. Sources: [1] https://www.deepfission.com/investors/company-information [2] https://stockanalysis.com/stocks/fisn/company/ [3] https://www.deepfission.com/ [4] https://www.deepfission.com/about-us [5] https://www.morningstar.com.au/investments/security/nasdaq/FISN/summary [6] https://community.element14.com/technologies/power-management/b/blog/posts/deep-fission-is-burying-nuclear-reactors-one-mile-deep [7] https://pratimanagement.substack.com/p/deep-fission-the-most-asymmetric [8] https://www.deepfission.com/investors

Deep Fission, Inc. (NASDAQ:FISN) is a publicly traded company in the Energy & Transportation sector. Wiseek monitors FISN SEC EDGAR filings and licensed market news in real time, scoring each submission for market-moving significance on a 1–10 scale. Items rated 7 or higher generate instant alerts.

Recent high-impact activity:

  • Deep Fission Prices $40M IPO at $16.00 Per Share, Securing Critical Funding for Reactor Development
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$14.8 +0.24% today
Live data · 2026-06-18 22:01 UTC · After hours

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feed FISN - Latest Insights

FISN
Jun 18, 2026, 4:27 PM EDT
Filing Type: 424B4
Importance Score:
9
Price at Filing: $14.57
Real-time Price: $14.80 info
Change: +$0.230 (+2%) info
Market Cap: N/A info