Company · CIK 1918102

# DEEP FISSION, INC.

| CIK | [1918102](https://www.sec.gov/cgi-bin/browse-edgar?action=getcompany&CIK=0001918102) (SEC EDGAR) |
| --- | --- |
| Industry (SIC) | 4911 — Electric Services |
| Incorporated in | DE |
| Business address | CA |
| Listed | FISN (Nasdaq) |
| First annual or quarterly report | 2022-05-16 |

## Offerings

 3 registrations

| Registration | Label and status | First filed | Last event | Filings |
| --- | --- | --- | --- | --- |
| 333-296043 | Registered company Final prospectus | 2026-05-20 | 2026-06-18 | 4 |
| 333-290438 | Registered company Effective | 2025-09-22 | 2026-05-01 | 8 |
| 333-293510 | Registered company Effective | 2026-02-17 | 2026-05-01 | 3 |

## Filings

 16

| Filed | Filing | Registration | Accession |
| --- | --- | --- | --- |
| 2026-06-18 | [424B4](https://www.sec.gov/Archives/edgar/data/1918102/000110465926075763/0001104659-26-075763-index.htm) Final prospectus | 333-296043 | 0001104659-26-075763 |
| 2026-06-17 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1918102/999999999526002042/9999999995-26-002042-index.htm) Declared effective | 333-296043 | 9999999995-26-002042 |
| 2026-06-10 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1918102/000110465926072286/0001104659-26-072286-index.htm) Amendment | 333-296043 | 0001104659-26-072286 |
| 2026-05-20 | [S-1](https://www.sec.gov/Archives/edgar/data/1918102/000110465926064074/0001104659-26-064074-index.htm) Registration filed | 333-296043 | 0001104659-26-064074 |
| 2026-05-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1918102/999999999526001434/9999999995-26-001434-index.htm) Declared effective | 333-293510 | 9999999995-26-001434 |
| 2026-05-01 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1918102/999999999526001430/9999999995-26-001430-index.htm) Declared effective | 333-290438 | 9999999995-26-001430 |
| 2026-04-22 | [DRS](https://www.sec.gov/Archives/edgar/data/1918102/000110465926046420/0001104659-26-046420-index.htm) Draft made public | 377-09288 | 0001104659-26-046420 |
| 2026-04-21 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1918102/000110465926045974/0001104659-26-045974-index.htm) Amendment | 333-293510 | 0001104659-26-045974 |
| 2026-02-17 | [S-1](https://www.sec.gov/Archives/edgar/data/1918102/000110465926016226/0001104659-26-016226-index.htm) Registration filed | 333-293510 | 0001104659-26-016226 |
| 2026-02-06 | [424B5](https://www.sec.gov/Archives/edgar/data/1918102/000110465926011504/0001104659-26-011504-index.htm) Shelf takedown | 333-290438 | 0001104659-26-011504 |
| 2026-02-05 | [EFFECT](https://www.sec.gov/Archives/edgar/data/1918102/999999999526000450/9999999995-26-000450-index.htm) Declared effective | 333-290438 | 9999999995-26-000450 |
| 2026-01-27 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1918102/000110465926006743/0001104659-26-006743-index.htm) Amendment | 333-290438 | 0001104659-26-006743 |
| 2025-12-30 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1918102/000110465925125146/0001104659-25-125146-index.htm) Amendment | 333-290438 | 0001104659-25-125146 |
| 2025-12-01 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1918102/000110465925117373/0001104659-25-117373-index.htm) Amendment | 333-290438 | 0001104659-25-117373 |
| 2025-09-24 | [S-1/A](https://www.sec.gov/Archives/edgar/data/1918102/000121390025091209/0001213900-25-091209-index.htm) Amendment | 333-290438 | 0001213900-25-091209 |
| 2025-09-22 | [S-1](https://www.sec.gov/Archives/edgar/data/1918102/000121390025089735/0001213900-25-089735-index.htm) Registration filed | 333-290438 | 0001213900-25-089735 |

[All filings of this company](https://equitycapital.markets/filings?cik=1918102) · [CSV](https://equitycapital.markets/filings.csv?cik=1918102)

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Source page: https://equitycapital.markets/company/1918102 · Data: U.S. SEC EDGAR · CC BY 4.0