Deep Fission, Inc. (FISN)
It posted a net loss of $106.4M. In fiscal 2025 capital spending exceeded operating cash flow by $13.1M. At June 30, 2026 it held $93M in cash. Its latest periodic report to the SEC is the quarterly report (10-Q) filed on August 3, 2026.
What Deep Fission, Inc. does
Deep Fission, Inc. is registered with the SEC under industry code SIC 4911 (Electric Services). Its shares trade on NASDAQ under the ticker FISN.
Revenue and profit by year
Key figures
| Fiscal year | Revenue | Net income | Diluted EPS | Free cash flow |
|---|---|---|---|---|
| 2025 | n/a | -$61M | -$2.41 | -$13.1M |
| 2024 | n/a | -$5.7M | -$0.57 | -$2.8M |
| 2023 | n/a | -$47.6K | -$0.57 | n/a |
| 2022 | n/a | -$49.4K | -$0.57 | n/a |
Latest SEC filings
What Deep Fission, Inc. has filed recently, newest first. Each links to the original document on SEC EDGAR.
- September 21, 2026
- August 3, 2026Quarterly report 10-Q · period to June 30, 2026
- July 29, 2026Other event 8-K
- July 20, 2026
- July 17, 2026
- June 22, 2026Other event 8-K
- June 18, 2026
- June 17, 2026Proxy statement DEF 14A
- June 10, 2026
- May 20, 2026IPO registration S-1
Questions about FISN
What does Deep Fission, Inc. do?
Deep Fission, Inc. is registered with the SEC under industry code SIC 4911 (Electric Services). Its shares trade on NASDAQ under the ticker FISN.
Is Deep Fission, Inc. profitable?
No. Over the twelve months to June 30, 2026 it reported a net loss of $106.4M.
When did Deep Fission, Inc. last report?
Its most recent periodic report is the quarterly report (10-Q) filed on August 3, 2026. It covers the period to June 30, 2026. Its newest filing of any kind is the investor disclosure from September 21, 2026.
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Follow FISN: get an email when it filesWhere the numbers come from
Financial figures are the values Deep Fission, Inc. tagged in its own SEC filings (XBRL), taken from the latest filing for each period, so restatements replace older figures. Revenue, profit and cash flow are for full fiscal years unless marked as the last twelve months, which is the sum of the four most recent quarters. Where a company reports only the full year, the fourth quarter is the year minus the first three.
Prices are delayed end-of-day market data in the listing currency, and market cap moves with the price. P/E is shown only when earnings per share are positive. Nothing here is investment advice.