0001918102-25-000004.txt : 20250923 0001918102-25-000004.hdr.sgml : 20250923 20250922181313 ACCESSION NUMBER: 0001918102-25-000004 CONFORMED SUBMISSION TYPE: D PUBLIC DOCUMENT COUNT: 1 ITEM INFORMATION: Rule 506(b) provides a "safer harbor" for a private offering FILED AS OF DATE: 20250923 DATE AS OF CHANGE: 20250922 EFFECTIVENESS DATE: 20250923 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: D SEC ACT: 1933 Act SEC FILE NUMBER: 021-558291 FILM NUMBER: 251331190 BUSINESS ADDRESS: STREET 1: 55 NE 5TH AVE STREET 2: SUITE 401 CITY: BOCA RATON STATE: FL ZIP: 33432 BUSINESS PHONE: 561 464 2841 MAIL ADDRESS: STREET 1: 55 NE 5TH AVE STREET 2: SUITE 401 CITY: BOCA RATON STATE: FL ZIP: 33432 FORMER COMPANY: FORMER CONFORMED NAME: Surfside Acquisition Inc. DATE OF NAME CHANGE: 20220317 D 1 primary_doc.xml X0708 D LIVE 0001918102 DEEP FISSION, INC. 2831 Garber Street Berkeley CA CALIFORNIA 94705 (707) 400-0778 DELAWARE Surfside Acquisition Inc. Corporation true 2021 Elizabeth A. Muller c/o Deep Fission, Inc. 2831 Garber Street Berkeley CA CALIFORNIA 94705 Executive Officer Director Richard A. Muller c/o Deep Fission, Inc. 2831 Garber Street Berkeley CA CALIFORNIA 94705 Executive Officer Director William Mark Schmitz c/o Deep Fission, Inc. 2831 Garber Street Berkeley CA CALIFORNIA 94705 Executive Officer Other Energy Decline to Disclose 06b false 2025-09-05 false true true true true Securities were sold to accredited investors immediately following closing of a reverse merger between Deep Fission Nuclear Inc. (fka Deep Fission Inc., "DFNI") and Deep Fission Acquisition Co., with DFNI surviving the merger as our wholly-owned sub. 0 Seaport Global Securities LLC 000116270 None None 360 Madison Ave 22nd Floor New York NY NEW YORK 10017 CA CALIFORNIA CO COLORADO FL FLORIDA GA GEORGIA MD MARYLAND MA MASSACHUSETTS MN MINNESOTA MO MISSOURI NJ NEW JERSEY NY NEW YORK PA PENNSYLVANIA TX TEXAS WI WISCONSIN true Phoenix Financial Services 000144403 None None 100 Wall Street Floor 10 New York NY NEW YORK 10005 CA CALIFORNIA CO COLORADO CT CONNECTICUT FL FLORIDA GA GEORGIA IA IOWA MI MICHIGAN MS MISSISSIPPI NJ NEW JERSEY NY NEW YORK PA PENNSYLVANIA VT VERMONT false Network 1 Financial Securities, Inc. 000013577 None None The Galleria, Suite 241 2 Bridge Avenue Red Bank NJ NEW JERSEY 07701 CA CALIFORNIA FL FLORIDA LA LOUISIANA MD MARYLAND OK OKLAHOMA false The Benchmark Company, LLC 000022982 None None 150 E 58th Street 17th Floor New York NY NEW YORK 10155 CA CALIFORNIA FL FLORIDA WA WASHINGTON true Dinosaur Financial Group, L.L.C. 000104446 None None 33 Whitehall St. Ste. 1102 New York NY NEW YORK 10004 CA CALIFORNIA FL FLORIDA NJ NEW JERSEY NY NEW YORK true 31759998 30000000 1759998 Includes amounts receivable upon exercise of warrants to purchase 586,666 shares of common stock with the exercise price of $3.00 per share issued to the placement agents; such warrants have not yet been exercised. false 100 2100000 0 0 false DEEP FISSION, INC. /s/ Elizabeth A. Muller Elizabeth A. Muller President and CEO 2025-09-22