Deep Fission signs DOE reactor authorization agreement for underground test reactor

DEEP FISSION, INC.

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).

item 1.01 item 9.01

Key facts

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Material Agreements SEC 8-K Item 1.01/1.02 confidence 0.9

DEEP FISSION, INC. entered into Agreement with United States Department of Energy (effective 2025-11-14).

Action: entry
Counterparty: United States Department of Energy
Effective: 2025-11-14

Exact text from the filing

the Company and the United States Department of Energy fully executed and delivered an Other Transaction Agreement for Reactor Authorization, effective as of November 14, 2025, which we refer to as the “Agreement”

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DEEP FISSION, INC. filing history →

Source: SEC EDGAR

accession 0001104659-25-114959

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