secwatch.observer — SEC 8-K summary ====================================== Issuer: DEEP FISSION, INC. (FISN) CIK: 0001918102 Form: 8-K Filed at: 2026-04-22T23:59:59+00:00 Accession: 0001104659-26-046488 Event type: other_material Sentiment: neutral Materiality: 0.70 Item codes: 7.01, 9.01 LLM model: deepseek-v4-flash:cloud@v2 Deep Fission confidentially submits draft S-1 for proposed IPO of common stock ------------------------------------------------------------------------------ - Confidential submission of Form S-1 to SEC for a proposed public offering of common stock. - Number of shares and price range not yet determined; offering subject to market conditions. - Deep Fission develops small modular pressurized water reactors installed one mile underground. Source: EDGAR index: https://www.sec.gov/Archives/edgar/data/1918102/000110465926046488/0001104659-26-046488-index.htm Primary doc: https://www.sec.gov/Archives/edgar/data/1918102/000110465926046488/tm2612289d1_8k.htm HTML page: https://secwatch.observer/filing/0001104659-26-046488 License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer