Deep Fission, Inc. Signs Material Definitive Agreement
| Field | Detail |
|---|---|
| Company | Deep Fission, Inc. |
| Form Type | 8-K |
| Filed Date | Nov 21, 2025 |
| Risk Level | medium |
| Pages | 2 |
| Reading Time | 3 min |
| Sentiment | neutral |
Sentiment: neutral
Topics: material-agreement, corporate-action
TL;DR
Deep Fission (DFSN) signed a big deal on 11/17. Details to follow.
AI Summary
On November 17, 2025, Deep Fission, Inc. entered into a material definitive agreement. The company, formerly known as Surfside Acquisition Inc., is incorporated in Delaware and has its principal executive offices at 2831 Garber Street, Berkeley, California. This filing is a current report pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.
Why It Matters
This filing indicates a significant new agreement for Deep Fission, Inc., which could impact its future operations and financial performance.
Risk Assessment
Risk Level: medium — The filing indicates a material definitive agreement, but the specifics of the agreement are not detailed, leaving uncertainty about its impact.
Key Players & Entities
- Deep Fission, Inc. (company) — Registrant
- Surfside Acquisition Inc. (company) — Former Name
- November 17, 2025 (date) — Date of earliest event reported
- 2831 Garber Street, Berkeley, California (location) — Principal executive offices
FAQ
What is the nature of the material definitive agreement entered into by Deep Fission, Inc. on November 17, 2025?
The filing states that Deep Fission, Inc. entered into a material definitive agreement on November 17, 2025, but the specific details of this agreement are not provided in the excerpt.
When was Deep Fission, Inc. formerly known as?
Deep Fission, Inc. was formerly known as Surfside Acquisition Inc., with a date of name change on March 17, 2022.
Where are Deep Fission, Inc.'s principal executive offices located?
Deep Fission, Inc.'s principal executive offices are located at 2831 Garber Street, Berkeley, California, 94705.
What is the IRS Employer Identification Number for Deep Fission, Inc.?
The IRS Employer Identification Number for Deep Fission, Inc. is 87-4265302.
Under which section of the Securities Exchange Act is this Form 8-K filed?
This Form 8-K is filed pursuant to Section 13 or 15(d) of the Securities Exchange Act of 1934.
Filing Stats: 633 words · 3 min read · ~2 pages · Grade level 13.8 · Accepted 2025-11-21 15:16:17
Filing Documents
- tm2531798d1_8k.htm (8-K) — 24KB
- tm2531798d1_ex10-1.htm (EX-10.1) — 190KB
- 0001104659-25-114959.txt ( ) — 408KB
- df-20251117.xsd (EX-101.SCH) — 3KB
- df-20251117_lab.xml (EX-101.LAB) — 33KB
- df-20251117_pre.xml (EX-101.PRE) — 22KB
- tm2531798d1_8k_htm.xml (XML) — 3KB
01 – Entry into a Material Definitive Agreement
Item 1.01 – Entry into a Material Definitive Agreement Deep Fission, Inc., which we refer to as "Deep Fission" or the "Company", reports that on November 17, 2025, the Company and the United States Department of Energy fully executed and delivered an Other Transaction Agreement for Reactor Authorization, effective as of November 14, 2025, which we refer to as the "Agreement". The Agreement sets out the terms under which the Department of Energy will authorize and oversee Deep Fission's underground nuclear reactor system test reactor deployment as part of the federal reactor authorization pilot program established under Executive Order 14301, which directs the Department of Energy to support the construction and operation of qualified test reactors outside the National Laboratory system. The Agreement, issued under the Department of Energy's authority in the Atomic Energy Act and Executive Order 14301, governs the first phase of the program and describes the Department of Energy's oversight responsibilities, including approving the reactor's safety basis and granting startup authorization. Either party may terminate the Agreement upon 30 days' written notice, and the Department of Energy may terminate it immediately in the case of a material breach, insolvency, or other specified circumstances. If the Agreement is terminated, the Department of Energy's authorization for reactor operations ends immediately, and Deep Fission becomes responsible for obtaining any required licensing from the Nuclear Regulatory Commission. The foregoing description of the material terms of the Agreement does not purport to be complete and is qualified in its entirety by reference to the full text of the Agreement, a copy of which is filed as Exhibit 10.1 to this Form 8-K.
01 Financial Statements and Exhibits
Item 9.01 Financial Statements and Exhibits Exhibit No. Description 10.1 Other Transaction Agreement for Reactor Authorization, dated November 14, 2025, between Deep Fission, Inc. and the U.S. Department of Energy. 104 Cover Page Interactive Data File (embedded within the Inline XBRL document) 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: November 21, 2025 /s/ JON GORDON Jon Gordon General Counsel & Secretary