DEEP FISSION, INC.
FISN · Electric Services · 56.4M shares · +3%/yr ↑ shares · EDGAR filings ↗
Grade
D50Pre-revenue borehole-nuclear developer with a clean balance sheet but deeply negative returns and no operating business yet.
Strengths
- Strong liquidity (current/quick ratio ~10x, 95th pct) and ~7 quarters of runway on $23.7M cash
- Cash position above sector median (26th pct) for a development-stage name
Risks
- No meaningful revenue; ROA/ROE bottom-decile (2nd-3rd pct) and FCF -$13M
- Unproven, capital-intensive reactor concept with binary regulatory/commercialization risk
Notable findings
Key metrics
Return on equity
-273.7%
Return on assets
-247.1%
Current ratio
10.2×
Free cash flow
-$13M
Tangible book value
$22M
Cash & investments
$24M
Cash runway
7q
Notable events (8-K)
| Date | Items | |
|---|---|---|
| 2026-06-22 | Other | filing ↗ |
| 2026-04-22 | Reg FDExhibits | filing ↗ |
| 2026-04-09 | Non-reliance/restatement | filing ↗ |
| 2026-03-05 | Auditor changeExhibits | filing ↗ |
| 2026-02-25 | Exec/director change | filing ↗ |
| 2026-02-10 | Material agreement3.02Reg FDOtherExhibits | filing ↗ |
| 2025-12-22 | Exec/director changeOtherExhibits | filing ↗ |
| 2025-12-11 | Exec/director changeExhibits | filing ↗ |
Recent filings
| Form | Filed | Period | Accession |
|---|---|---|---|
| 8-K | 2026-06-22 | 2026-06-22 | 0001104659-26-076400 ↗ |
| 10-Q | 2026-05-08 | 2026-03-31 | 0001104659-26-057835 ↗ |
| 8-K | 2026-04-22 | 2026-04-22 | 0001104659-26-046488 ↗ |
| 10-K | 2026-04-15 | 2025-12-31 | 0001104659-26-043870 ↗ |
| 8-K | 2026-04-09 | 2026-04-09 | 0001104659-26-041290 ↗ |
| 8-K | 2026-03-05 | 2026-02-27 | 0001104659-26-023876 ↗ |
| 8-K | 2026-02-25 | 2026-02-18 | 0001104659-26-019327 ↗ |
| 8-K | 2026-02-10 | 2026-02-05 | 0001104659-26-012343 ↗ |
| 8-K | 2025-12-22 | 2025-12-19 | 0001104659-25-123840 ↗ |
| 8-K | 2025-12-11 | 2025-12-09 | 0001104659-25-120071 ↗ |
| 8-K | 2025-12-04 | 2025-12-04 | 0001104659-25-118387 ↗ |
| 8-K | 2025-11-21 | 2025-11-17 | 0001104659-25-114959 ↗ |