secwatch.observer — SEC 8-K summary
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Issuer:     DEEP FISSION, INC. (FISN)
CIK:        0001918102
Form:       8-K
Filed at:   2025-11-21T23:59:59+00:00
Accession:  0001104659-25-114959
Event type: regulatory
Sentiment:  positive
Materiality: 0.65
Item codes: 1.01, 9.01
LLM model:  deepseek-v4-flash:cloud@v2

Deep Fission signs DOE reactor authorization agreement for underground test reactor
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- DOE and Deep Fission executed Other Transaction Agreement effective Nov 14, 2025, under EO 14301 pilot program.
- Phase I covers safety basis approval and startup authorization; Deep Fission must achieve criticality by July 4, 2026.
- No DOE funding provided; Deep Fission retains all IP and data rights; DOE has oversight and termination rights.
- Either party may terminate on 30 days' notice; DOE may terminate immediately for material breach or insolvency.
- After Phase I, DOE may decide on Phase II (decommissioning or pathway to NRC licensing).

Source:
  EDGAR index:    https://www.sec.gov/Archives/edgar/data/1918102/000110465925114959/0001104659-25-114959-index.htm
  Primary doc:    https://www.sec.gov/Archives/edgar/data/1918102/000110465925114959/tm2531798d1_8k.htm
  HTML page:      https://secwatch.observer/filing/0001104659-25-114959

License: Source filings: public domain (SEC EDGAR). Summaries (headline + bullets): CC-BY-4.0; attribute https://secwatch.observer