CIK 0001918102 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company
DEEP FISSION, INC.
Sign in to watch- Ticker
- FISN
- Exchange
- Nasdaq
- Industry
- Electric Services
- FY end
- Dec 31
- Entity type
- operating
- EIN
- 932463886
- Phone
- (707) 400-0778
- Business address
- 2001 ADDISON ST., SUITE 300, BERKELEY, CA, 94704
- Former names
- Surfside Acquisition Inc.
- Open-market buys, last 90 days
- $21,612
- in 1 filing
- Open-market sales, last 90 days
- $0
- in 0 filings
Net +$21,612. Shares bought or sold at a price by officers, directors and 10% owners (Form 4 codes P and S). Grants, option exercises and tax withholding aren't counted.
Who's trading
90 days
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-11-11 | Muller Elizabeth CEO, President | Purchase | +10,000 | $2.16 | $22K | 10,000 |
| 2026-07-23 | GLANVILLE THOMAS S Director | Grant or award · Restricted Stock Unit | +19,156 | 19,156 | ||
| 2026-07-23 | JANOVER BLAKE Director | Grant or award · Restricted Stock Unit | +18,962 | 18,962 | ||
| 2026-07-23 | Goldman Tepper Leslie Director | Grant or award · Restricted Stock Unit | +19,204 | 19,204 | ||
| 2026-07-23 | Angell Jonathon Director | Grant or award · Restricted Stock Unit | +16,973 | 16,973 | ||
| 2026-03-09 | Schmitz William Mark Chief Financial Officer | Grant or award · Employee Stock Option (right to buy) | +223,000 | 223,980 | ||
| 2026-03-09 | Angell Jonathon Director | Grant or award · Restricted Stock Unit | +3,334 | 103,334 | ||
| 2026-03-09 | Goldman Tepper Leslie Director | Grant or award · Restricted Stock Unit | +3,334 | 103,334 | ||
| 2026-03-09 | GLANVILLE THOMAS S Director | Grant or award · Restricted Stock Unit | +3,334 | 103,334 | ||
| 2026-03-09 | JANOVER BLAKE Director | Grant or award · Restricted Stock Unit | +3,334 | 103,334 | ||
| 2026-03-09 | Muller Elizabeth Chief Executive Officer | Grant or award · Employee Stock Option (right to buy) | +2,600,000 | 4,150,300 | ||
| 2026-03-09 | Muller Richard Chief Technology Officer | Grant or award · Employee Stock Option (right to buy) | +223,000 | 872,363 | ||
| 2026-03-09 | Brasel Michael Allen Chief Operating Officer | Grant or award · Employee Stock Option (right to buy) | +445,000 | 530,000 | ||
| 2026-03-09 | Peres Mark Wayne Chief Nuclear Officer | Grant or award · Employee Stock Option (right to buy) | +223,000 | 263,000 | ||
| 2026-03-09 | Gordon Jonathan H General Counsel | Grant or award · Employee Stock Option (right to buy) | +223,000 | 328,000 | ||
| 2026-02-19 | Peres Mark Wayne Chief Nuclear Officer | Grant or award · Restricted Stock Unit | +25,000 | 25,000 | ||
| 2026-02-19 | Peres Mark Wayne Chief Nuclear Officer | Grant or award · Employee Stock Option (right to buy) | +15,000 | 15,000 | ||
| 2026-02-18 | Brasel Michael Allen See Remarks | Grant or award · Employee Stock Option (right to buy) | +15,000 | 15,000 | ||
| 2026-02-18 | Schmitz William Mark Chief Financial Officer | Grant or award · Employee Stock Option (right to buy) | +15,000 | 15,000 | ||
| 2026-02-18 | Gordon Jonathan H See Remarks | Grant or award · Employee Stock Option (right to buy) | +20,000 | 20,000 |
Page 1 of 2 · 35 trades