CIK 0001918102 · Non-accelerated filer<br>Smaller reporting company<br>Emerging growth company
DEEP FISSION, INC.
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- 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
Reading 31 more Form 4s from the SEC; this list fills in as they're read.
| Date | Insider | Transaction | Shares | Price | Value | Owned after |
|---|---|---|---|---|---|---|
| 2026-11-11 | Muller Elizabeth CEO, President | Purchase | +10,000 | $2.16 | $22K | 10,000 |
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