8-K
filed September 11, 2025, 7:59 PM ET
ticker FISN
CIK 0001918102
other material
confidence high
sentiment neutral
materiality 0.85
Deep Fission completes reverse merger with Surfside, raises $30M for nuclear reactors
DEEP FISSION, INC.
- Merger closed Sept 5, 2025; Deep Fission becomes public via reverse merger with Surfside Acquisition.
- Raised $30M ($3/share) in private placement; net ~$26M for R&D, working capital, and pilot reactor.
- New leadership: Elizabeth Muller (CEO), Richard Muller (CTO), William 'Mark' Schmitz (CFO).
- 50.8M shares outstanding post-merger; Legacy Deep Fission holders get 38.5M shares.
- Company developing 15 MWe underground pressurized water nuclear reactors in boreholes one mile deep.
Key facts
Extracted from this filing and checked against the source text.
Governance Changes
SEC 8-K Item 5.03/5.05/5.06
confidence 0.9
DEEP FISSION, INC.: Ceased to be a shell company as a result of the merger.
- Change
- shell status
Exact text from the filing
As a result of the Merger, we have ceased to be a shell company.
View on SEC.gov
Governance Changes
SEC 8-K Item 5.03/5.05/5.06
confidence 0.9
DEEP FISSION, INC.: Amended and restated bylaws in their entirety at the effective time of a merger.
- Change
- bylaw amendment
Exact text from the filing
At the Effective Time, we amended and restated our bylaws in their entirety.
View on SEC.gov
Governance Changes
SEC 8-K Item 5.03/5.05/5.06
confidence 0.9
DEEP FISSION, INC.: Amended and restated certificate of incorporation at the effective time of a merger.
- Change
- charter amendment
Exact text from the filing
At the Effective Time, we amended and restated our certificate of incorporation.
View on SEC.gov
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