# EDGAR Filing Document

**Accession Number:** 0001918102
**File Stem:** 0001104659-26-067221
**Filing Date:** 2026-5
**Character Count:** 4580
**Document Hash:** 841efc4e80c76fded000509e200ac39f
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001104659-26-067221.hdr.sgml**: 20260528

**ACCESSION NUMBER**: 0001104659-26-067221

**CONFORMED SUBMISSION TYPE**: 8-A12B

**PUBLIC DOCUMENT COUNT**: 1

**FILED AS OF DATE**: 20260528

**DATE AS OF CHANGE**: 20260528

**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:** 8-A12B
- **SEC ACT:** 1934 Act
- **SEC FILE NUMBER:** 001-43317
- **FILM NUMBER:** 261028538

**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

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION** 

**Washington, D.C. 20549**

**FORM 8-A**

**FOR REGISTRATION OF CERTAIN CLASSES OF SECURITIES PURSUANT**

**TO SECTION 12(b) OR (g) OF THE**

**SECURITIES EXCHANGE ACT OF 1934** 

**Deep Fission, Inc.**

(Exact Name of Registrant as Specified in its Charter)

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| | |
|:---|:---|
| **Delaware** | **87-4265302** |
| (State or other jurisdiction<br> of incorporation) | (IRS Employer<br> Identification No.) |

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| | |
|:---|:---|
| **2001 Addison St., Suite 300 <br> Berkeley, California**<br> (Address of principal executive offices) | **94704**<br> (Zip Code) |

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**Securities to be registered pursuant to Section 12(b) of the Act:**

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| | |
|:---|:---|
| Title of each class<br> to be so registered | Name of each exchange on which each class is <br> to be registered |
| **Common Stock, par value $0.0001 per share** | **The Nasdaq Stock Market LLC** |

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If this form relates to the registration of a class of securities pursuant to Section 12(b) of the Exchange Act and is effective pursuant to General Instruction A.(c) or (e), check the following box. ⌧

If this form relates to the registration of a class of securities pursuant to Section 12(g) of the Exchange Act and is effective pursuant to General Instruction A.(d) or (e), check the following box. ◻

If this form relates to the registration of a class of securities concurrently with a Regulation A offering, check the following box. ◻

**Securities Act registration statement or Regulation A offering statement file number to which this form relates (if applicable): 333-296043**

**Securities to be registered pursuant to Section 12(g) of the Act: None**

**ITEM 1. DESCRIPTION OF REGISTRANT'S SECURITIES TO BE REGISTERED.** 

Deep Fission, Inc., a Delaware corporation (the "<u>Registrant</u>"), hereby incorporates by reference herein the description of its common stock, par value $0.0001 per share, to be registered hereunder, set forth under the heading "Description of Capital Stock" in the Registrant's prospectus forming part of its Registration Statement on Form S-1 (File No. 333-296043), originally filed with the Securities and Exchange Commission (the "<u>Commission</u>") pursuant to the Securities Act of 1933, as amended (the "<u>Securities Act</u>"), on May 20, 2026, as thereafter amended and supplemented (the "<u>Registration Statement</u>"). Any form of prospectus subsequently filed by the Registrant with the Commission pursuant to Rule 424(b) under the Securities Act that constitutes part of the Registration Statement and that includes such description shall be deemed to be incorporated herein by reference.

**ITEM 2. EXHIBITS.** 

Pursuant to the Instructions as to Exhibits for this registration statement on Form 8-A, no exhibits are required to be filed because no other securities of the Registrant are registered on The Nasdaq Stock Market LLC and the securities registered hereby are not being registered pursuant to Section 12(g) of the Securities Exchange Act of 1934, as amended.

**SIGNATURE** 

Pursuant to the requirements of Section 12 of the Securities Exchange Act of 1934, the registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereto duly authorized.

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| | | |
|:---|:---|:---|
|  | **DEEP FISSION, INC.** | **DEEP FISSION, INC.** |
| Date: May 28, 2026 | By: | /s/ Jon Gordon |
|  |  | Name: Jon Gordon |
|  |  | Title: General Counsel & Secretary |

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