No annual revenue total was found in DEEP FISSION, INC.'s SEC filings.
Deep Fission, Inc. (FISN) files with the SEC under industry code 4911, Electric Services. Free cash flow was -$13.1 million. As of Sep 30, 2026 it held $63.4 million in cash and investments and $52,000 in total debt.
Revenue
—
Net income (TTM)
$-81.93M
-48.6% vs year-ago TTM
Operating cash flow (TTM)
$-67.83M
-760.1% vs year-ago TTM
Free cash flow (TTM)
$-68.01M
EPS
$-0.57
-5600.0% vs prior year
Dividend per share
None
Shares outstanding
56.21M
+1024.1% vs prior year
Net cash
$63.38M
as of Sep 30, 2026
Operating margin
—
Company profile
- Industry
- Electric Services (SIC 4911)
- Listed as
- FISN (Nasdaq)
- Fiscal year ends
- December 31
- Incorporated in
- DE
- Headquarters
- Berkeley, CA
- SEC filer status
- Non-accelerated filer, Smaller reporting company, Emerging growth company
- SEC CIK
- 1918102
- Former names
- Surfside Acquisition Inc. (until Sep 8, 2025)
Other Electric Services companies
- Nextera Energy Inc NEE
- Southern Co SO
- Constellation Energy Corp CEG
- American Electric Power Co Inc AEP
- Dominion Energy, Inc D
- Entergy Corp /DE/ ETR
- Vistra Corp. VST
- Fortis Inc. FTS
Key figures
Fiscal-year totals from the annual reports. Balance sheet lines are as of each year end.
| Line | FY 2025 Dec 31, 2025 |
FY 2024 Dec 31, 2024 |
FY 2023 Dec 31, 2023 |
FY 2022 Dec 31, 2022 |
|---|---|---|---|---|
| Operating income | -$21.4M | -$4.1M | -$47,625 | -$49,408 |
| Net income | -$61.0M | -$5.7M | -$47,625 | -$49,408 |
| Diluted EPS | — | -$0.57 | -$0.01 | -$0.01 |
| Operating cash flow | -$13.1M | -$2.8M | -$46,277 | -$40,056 |
| Free cash flow | -$13.1M | — | — | — |
| Total assets | $24.7M | $6.9M | $774 | $69 |
| Total liabilities | $2.4M | $10.9M | $110,225 | $61,895 |
| Stockholders' equity | $22.3M | -$4.1M | $460,262 | -$61,826 |
| Cash and investments | $23.7M | — | — | $69 |
Recent SEC filings
| Form | Description | Filed | Period |
|---|---|---|---|
| 10-Q | Quarterly report | Nov 4, 2026 | Sep 30, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Oct 20, 2026 | Oct 20, 2026 |
| 8-K |
Current report
Regulation FD disclosure
|
Sep 21, 2026 | Sep 21, 2026 |
| 10-Q | Quarterly report | Aug 3, 2026 | Jun 30, 2026 |
| 8-K |
Current report
Other events
|
Jul 29, 2026 | Jul 29, 2026 |
| 8-K |
Current report
Officer or director change, Shareholder vote results
|
Jul 17, 2026 | Jul 17, 2026 |
All 123 Deep Fission, Inc. SEC filings
Source: SEC EDGAR filings. This is company-reported data, not investment advice.