# EDGAR Filing Document

**Accession Number:** 0001918102
**File Stem:** 0001354457-26-000586
**Filing Date:** 2026-6
**Character Count:** 1198
**Document Hash:** 18daaedcf59c29ab16fda9ced7247dcc
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001354457-26-000586.hdr.sgml**: 20260617

**ACCESSION NUMBER**: 0001354457-26-000586

**CONFORMED SUBMISSION TYPE**: CERT

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260617

**DATE AS OF CHANGE**: 20260617

**EFFECTIVENESS DATE**: 20260617

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** DEEP FISSION, INC.
- **CENTRAL INDEX KEY:** 0001918102
- **STANDARD INDUSTRIAL CLASSIFICATION:** ELECTRIC SERVICES [4911]
- **ORGANIZATION NAME:** 01 Energy & Transportation
- **EIN:** 874265302
- **STATE OF INCORPORATION:** DE
- **FISCAL YEAR END:** 1231

**FILING VALUES:**
- **FORM TYPE:** CERT
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43317
- **FILM NUMBER:** 261097655

**BUSINESS ADDRESS:**
- **STREET 1:** 2831 GARBER STREET
- **CITY:** BERKELEY
- **STATE:** CA
- **ZIP:** 94705
- **BUSINESS PHONE:** (707) 400-0778

**MAIL ADDRESS:**
- **STREET 1:** 2831 GARBER STREET
- **CITY:** BERKELEY
- **STATE:** CA
- **ZIP:** 94705

**FORMER COMPANY:**
- **FORMER CONFORMED NAME:** Surfside Acquisition Inc.
- **DATE OF NAME CHANGE:** 20220317

### Attached PDF Documents

**Attachment 1:** `FISN_8A_Cert_1918102.pdf`

_No text found in this document._