DEEP FISSION, INC.

For the period ended Jun 30, 2026. Filed Aug 3, 2026.

About this filing

A company's report for each of its first three quarters. The financial statements are not audited. It shows how the business has moved since the last annual report, and what management says changed.

Jun 30, 2026 · Filed Aug 3, 2026

FISN$2.83+53.0%Stored close · as of Nov 9, 2026

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Contents

Cover page Table of Contents CAUTIONARY NOTE ON FORWARD-LOOKING STATEMENTS

PART I - FINANCIAL INFORMATION

Item 1. : Financial Statements

Condensed Consolidated Balance Sheets Condensed Consolidated Statements of Operations Condensed Consolidated Statements of Stockholders’ Equity (Deficit)Condensed Consolidated Statements of Cash Flows Notes to Condensed Consolidated Financial Statements Item 2. : Management’s Discussion and Analysis of Financial Condition and Results of Operations

Item 3. : Quantitative and Qualitative Disclosures About Market Risk (no text here)

Item 4. : Controls and Procedures

PART II - OTHER INFORMATION

Item 1. Legal Proceedings Item 1A. Risk Factors

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds (no text here)

Item 3. Defaults Upon Senior Securities (no text here)

Item 4. Mine Safety Disclosure (no text here)

Item 5. Other Information Item 6. Exhibits SIGNATURES

Item 6. Exhibits

ExhibitNumber		Description of Document
10.1+		Deep Fission, Inc. 2025 Equity Incentive Plan, as amended (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on July 17, 2026).
10.2+		Deep Fission, Inc. Non-Employee Director Compensation Policy, as amended and effective July 23, 2026 (incorporated by reference to Exhibit 10.1 to the Company’s Current Report on Form 8-K filed on July 29, 2026).
31.1*		Certification of the Principal Executive Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
31.2*		Certification of the Principal Financial Officer pursuant to Rule 13a-14(a) and Rule 15d-14(a) under the Securities Exchange Act of 1934, as adopted pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.
32.1˄		Certification of the Principal Executive Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
32.2˄		Certification of the Principal Financial Officer pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002.
101.INS		Inline XBRL Instance Document – the instance document does not appear in the Interactive Data File because XBRL tags are embedded within the Inline XBRL document.
101.SCH		Inline XBRL Taxonomy Extension with Embedded Linkbase Documents.
104		Cover Page Interactive Data File (embedded within the Inline XBRL document).

*	Filed herewith.

+	Denotes management compensatory contract or arrangement.

Exhibits 32.1 and 32.2 and the XBRL related information in Exhibit 101 shall not be deemed “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to liability of that section and shall not be incorporated by reference into any filing or other document pursuant to the Securities Act of 1933, as amended, except as shall be expressly set forth by specific reference in such filing or document.

ContentsView on SEC.gov

The text of this filing, as the company filed it with the SEC, without its images or exhibits. This is not investment advice.