Deep Fission Inc.
Organization details
- Legal name
- Deep Fission Inc.
- Former names
- Surfside Acquisition Inc.
- Ownership
- Public
- Status
- Active
- Sector (GICS)
- Utilities
- SIC code
- 4911 — Electric Services
- Jurisdiction of incorporation
- Delaware
- Headquarters city
- Berkeley
- Headquarters state / province
- California
- Headquarters country
- United States
- Fiscal year end
- December
- Ticker symbol
- FISN
- Primary stock exchange
- Nasdaq
Identifiers
- SEC CIK
- 0001918102
- EIN
- 87-4265302
Board of directors
-
Blake Janover · DirectorSince 2025
-
Elizabeth Muller · Director · President and Chief ExecutiveSince 2025
-
Ian Seth Jacobs · Director · President, CEO, CFO, SecretarySince 2025
-
Jonathon Angell · DirectorSince 2025
-
Mark N. Tompkins · DirectorSince 2025
-
Richard Muller · Director · Chief Technology OfficerSince 2025
-
Tepper Leslie Goldman · DirectorSince 2025
-
Thomas S. Glanville · DirectorSince 2025
Chief executives
Director election results
Annual meeting of July 17, 2026. Support is votes for as a share of votes for and against (or withheld). Below 80% is a clear protest.
-
98.9%
Board connections
3 of this board's directors also sit on 4 other boards.
- via Blake Janover
- via Thomas S. Glanville
- via Blake Janover
- via Tepper Leslie Goldman
Insider trades
All notable trades →From SEC Forms 4 and 5. Open-market purchases and sales are highlighted; grants, option exercises and shares withheld for tax are routine.
- Bought, last 12 months
- $0
- 0 purchases by 0 insiders
- Sold, last 12 months
- $0
- 0 sales by 0 insiders
| Date | Insider | Transaction | Shares | Price | Value |
|---|---|---|---|---|---|
| Dec 9, 2025 | Elizabeth Muller Officer (Chief Executive Officer) | Grant or award | +549,451 | — | — |
| Sep 5, 2025 | Richard Muller Director, Officer (Chief Technology Officer) | Grant or award | +5,196,426 | — | — |
| Sep 5, 2025 | Elizabeth Muller Director, Officer (President and Chief Executive) | Grant or award | +5,196,426 | — | — |
| Sep 5, 2025 | Schmitz William Mark Officer (Chief Financial Officer) | Grant or award | +103,928 | — | — |
| Sep 5, 2025 | Mark N. Tompkins See Remarks | Other | −2,833,333 | — | — |
| Sep 5, 2025 | Elizabeth Muller Director, Officer (President and Chief Executive) | Grant or award | +5,057,855 | — | — |
| Aug 26, 2025 | Mark N. Tompkins Director, 10% owner | Open-market sale | −25,000 | — | — |
| Aug 26, 2025 | Ian Seth Jacobs Director, Officer (President, CEO, CFO, Secretary) | Open-market purchase | +25,000 | — | — |
Peers
Compare boardsOrganizations in the same sector, closest in location and size first.
Questions about Deep Fission Inc.
Who is the CEO of Deep Fission Inc.?
Elizabeth Muller has been Deep Fission Inc.'s President and Chief Executive since September 2025.
How many directors are on Deep Fission Inc.'s board?
Deep Fission Inc.'s board has 8 directors: Blake Janover, Elizabeth Muller, Ian Seth Jacobs, Jonathon Angell, Mark N. Tompkins, Richard Muller, Tepper Leslie Goldman and Thomas S. Glanville.
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