Form 4 holding
Chief Executive Officer
Surfside Acquisition Inc.
- Security class
- Common Stock
- Shares / value
- 5,196,426
- Estimated value
- Report date
- 05 Sep 2025
- Price
- Ownership
- Direct
Elizabeth Muller - Chief Executive Officer at DEEP FISSION, INC.
Issuer-level insider activity
- Role
- Chief Executive Officer
- Issuer ticker
- FISN on Nasdaq
- Entity type
- Individual
- Source filing history
- Open source filing history
Identity
Names, identifiers, and filing context for this profile.
1 identity field
Source evidence
Original filing metadata and source links for verification.
1 source field
No buys or sells have been reported by Elizabeth Muller since 23 Aug 2025
Reported holdings for Elizabeth Muller in DEEP FISSION, INC.
Form 4 holding
Chief Executive Officer
Surfside Acquisition Inc.
- Security class
- Common Stock
- Shares / value
- 5,057,855
- Estimated value
- Report date
- 05 Sep 2025
- Price
- Ownership
- By Muller Family Trust
Form 4 holding
Chief Executive Officer
DEEP FISSION, INC.
- Security class
- Employee Stock Option (right to buy)
- Shares / value
- 4,150,300
- Estimated value
- Report date
- 09 Mar 2026
- Price
- Ownership
- Direct
- Underlying class
- Common Stock
- Underlying amount
Form 4 holding
Chief Executive Officer
DEEP FISSION, INC.
- Security class
- Stock Option (right to buy)
- Shares / value
- 994,849
- Estimated value
- Report date
- 09 Dec 2025
- Price
- Ownership
- Direct
- Underlying class
- shares of Common Stock
- Underlying amount
Form 4 holding
Chief Executive Officer
DEEP FISSION, INC.
- Security class
- Restricted Stock Units
- Shares / value
- 549,451
- Estimated value
- Report date
- 09 Dec 2025
- Price
- Ownership
- Direct
Transaction history for Elizabeth Muller in DEEP FISSION, INC.
| Sym | Class | Transaction | % | SEC-reported value | SEC-reported price | Shares | Shares after | Date | Ownership |
|---|
* marks a reported price that did not pass the local price check.