Deep Fission, Inc. Files 8-K on Officer/Director Changes
| Field | Detail |
|---|---|
| Company | Deep Fission, Inc. |
| Form Type | 8-K |
| Filed Date | Dec 22, 2025 |
| Risk Level | medium |
| Pages | 3 |
| Reading Time | 3 min |
| Sentiment | neutral |
Sentiment: neutral
Topics: management-change, corporate-governance, filing
TL;DR
Deep Fission (DFSN) filed an 8-K detailing leadership changes and compensation. Watch for updates.
AI Summary
Deep Fission, Inc. filed an 8-K on December 22, 2025, reporting events as of December 19, 2025. The filing covers the departure of directors or certain officers, the election of directors, the appointment of certain officers, and compensatory arrangements. It also includes other events and financial statements/exhibits.
Why It Matters
This filing indicates significant changes in the company's leadership and governance structure, which could impact strategic direction and investor confidence.
Risk Assessment
Risk Level: medium — Changes in directors and officers, especially if numerous or at high levels, can signal internal shifts or strategic realignments that may carry risks.
Key Numbers
- 000-56407 — SEC File Number (Identifies the company's filing history with the SEC.)
- 87-4265302 — IRS Employer Identification No. (Company's tax identification number.)
- 20251219 — Date of Earliest Event Reported (Indicates the effective date of the reported events.)
- 20251222 — Filing Date (The date the 8-K was officially submitted to the SEC.)
Key Players & Entities
- DEEP FISSION, INC. (company) — Registrant
- Surfside Acquisition Inc. (company) — Former Company Name
- Delaware (jurisdiction) — State of Incorporation
- Berkeley, California (location) — Principal Executive Offices
- 2831 Garber Street (address) — Business and Mail Address
- (707) 400-0778 (phone_number) — Registrant's telephone number
FAQ
What specific changes occurred regarding directors or officers?
The filing indicates the departure of directors or certain officers, the election of directors, and the appointment of certain officers.
Are there any details on new compensatory arrangements?
Yes, the filing explicitly mentions 'Compensatory Arrangements of Certain Officers' as an item covered.
What is the former name of Deep Fission, Inc.?
The former name of Deep Fission, Inc. was Surfside Acquisition Inc., with a name change date of March 17, 2022.
Where are Deep Fission, Inc.'s principal executive offices located?
The principal executive offices are located at 2831 Garber Street, Berkeley, California, 94705.
What is the SIC code for Deep Fission, Inc.?
The Standard Industrial Classification (SIC) code for Deep Fission, Inc. is 4911, which corresponds to Electric Services.
Filing Stats: 795 words · 3 min read · ~3 pages · Grade level 11.6 · Accepted 2025-12-22 17:27:49
Filing Documents
- tm2533770d1_8k.htm (8-K) — 24KB
- tm2533770d1_ex19-1.htm (EX-19.1) — 63KB
- 0001104659-25-123840.txt ( ) — 257KB
- df-20251219.xsd (EX-101.SCH) — 3KB
- df-20251219_lab.xml (EX-101.LAB) — 33KB
- df-20251219_pre.xml (EX-101.PRE) — 22KB
- tm2533770d1_8k_htm.xml (XML) — 3KB
01 Other Events
Item 8.01 Other Events. On December 19, 2025, the Board of Directors (the " Board ") of Deep Fission, Inc. (the " Company ") adopted an Insider Trading Policy applicable to the Company's directors, officers, employees, consultants, and other covered persons. The Insider Trading Policy is designed to promote compliance with applicable securities laws, including Section 10(b) of the Securities Exchange Act of 1934 and Rule 10b-5 thereunder, and establishes restrictions on trading in the Company's securities, including prohibitions on insider trading and tipping, trading during blackout periods, and requirements relating to pre-clearance and Rule 10b5-1 trading plans. The foregoing description of the Insider Trading Policy does not purport to be complete and is qualified in its entirety by reference to the full text of the Insider Trading Policy, which is filed as Exhibit 19.1 to this Current Report on Form 8-K and incorporated herein by reference.
01 Financial Statements and Exhibits
Item 9.01 Financial Statements and Exhibits Exhibit No. Description 19.1 Insider Trading Policy (as adopted December 19, 2025) 104 Cover Page Interactive Data File (Inline XBRL) SIGNATURE Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized. DEEP FISSION, INC. Date: December 22, 2025 /s/ Jon Gordon Jon Gordon General Counsel & Secretary