Deep Fission, Inc.
FISNNasdaqCIK 1918102UtilitiesFiscal year ends Dec 31
Reports and events: 49 filings
Newest first, by EDGAR acceptance time (Eastern). Each filing’s page lists its documents on sec.gov and, for 10-K and 10-Q reports, the extracted sections.
What the forms are: 10-K, 10-Q, 8-K, Form 4, DEF 14A, Schedule 13D, Schedule 13G, amendments, accession numbers.
| Filed | Form | What it is | Accession number |
|---|---|---|---|
| 2026-10-2019:54 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-117389 |
| 2026-09-2115:26 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-109201 |
| 2026-08-0321:25 ET | 10-Q | Quarterly reportPeriod 2026-06-30 | 0001104659-26-089884 |
| 2026-07-2920:02 ET | 8-K | 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-088125 |
| 2026-07-1720:06 ET | 8-K | 5.02 Departure or appointment of officers or directors; 5.07 Shareholder vote results; 9.01 Financial statements and exhibits | 0001104659-26-084625 |
| 2026-06-2220:20 ET | 8-K | 8.01 Other events | 0001104659-26-076400 |
| 2026-06-1720:46 ET | DEF 14A | Proxy statementPeriod 2026-07-17 | 0001104659-26-075196 |
| 2026-06-1019:07 ET | S-1/A | Registration statement, amended | 0001104659-26-072286 |
| 2026-05-2010:08 ET | S-1 | Registration statement | 0001104659-26-064074 |
| 2026-05-0819:09 ET | 10-Q | Quarterly reportPeriod 2026-03-31 | 0001104659-26-057835 |
| 2026-04-2214:11 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-26-046488 |
| 2026-04-2119:50 ET | S-1/A | Registration statement, amended | 0001104659-26-045974 |
| 2026-04-1521:28 ET | 10-K | Annual reportPeriod 2025-12-31 | 0001104659-26-043870 |
| 2026-04-0914:46 ET | 8-K | 4.02 Non-reliance on financial statements | 0001104659-26-041290 |
| 2026-03-0514:05 ET | 8-K | 4.01 Change of auditor; 9.01 Financial statements and exhibits | 0001104659-26-023876 |
| 2026-02-2502:13 ET | 8-K | 5.02 Departure or appointment of officers or directors | 0001104659-26-019327 |
| 2026-02-1719:38 ET | S-1 | Registration statement | 0001104659-26-016226 |
| 2026-02-1012:30 ET | 8-K | 1.01 Entry into a material agreement; 3.02 Unregistered sale of equity; 7.01 Regulation FD disclosure; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-26-012343 |
| 2026-01-2702:03 ET | S-1/A | Registration statement, amended | 0001104659-26-006743 |
| 2025-12-3019:05 ET | S-1/A | Registration statement, amended | 0001104659-25-125146 |
| 2025-12-2222:27 ET | 8-K | 5.02 Departure or appointment of officers or directors; 8.01 Other events; 9.01 Financial statements and exhibits | 0001104659-25-123840 |
| 2025-12-1100:24 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001104659-25-120071 |
| 2025-12-0418:42 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-118387 |
| 2025-12-0122:10 ET | S-1/A | Registration statement, amended | 0001104659-25-117373 |
| 2025-11-2120:16 ET | 8-K | 1.01 Entry into a material agreement; 9.01 Financial statements and exhibits | 0001104659-25-114959 |
| 2025-11-1422:17 ET | 10-Q | Quarterly reportPeriod 2025-09-30 | 0001104659-25-112717 |
| 2025-11-1220:59 ET | 8-K | 5.02 Departure or appointment of officers or directors; 9.01 Financial statements and exhibits | 0001104659-25-110309 |
| 2025-11-0723:18 ET | 8-K | 7.01 Regulation FD disclosure; 9.01 Financial statements and exhibits | 0001104659-25-107929 |
| 2025-09-2421:24 ET | S-1/A | Registration statement, amended | 0001213900-25-091209 |
| 2025-09-2301:44 ET | SCHEDULE 13D | Ownership report, active investor | 0001213900-25-090841 |
| 2025-09-2301:43 ET | SCHEDULE 13D | Ownership report, active investor | 0001213900-25-090840 |
| 2025-09-2215:38 ET | S-1 | Registration statement | 0001213900-25-089735 |
| 2025-09-1121:22 ET | 8-K | 1.01 Entry into a material agreement; 2.01 Completion of an acquisition or disposition; 3.02 Unregistered sale of equity; 3.03 Change to security holders’ rights; 4.01 Change of auditor; 5.01 Change in control; 5.02 Departure or appointment of officers or directors; 5.03 Amendment to articles or bylaws; 5.06 Item not in the standard list; 9.01 Financial statements and exhibits | 0001213900-25-086894 |
| 2025-08-1220:12 ET | 10-Q | Quarterly reportPeriod 2025-06-30 | 0001213900-25-074964 |
| 2025-05-1420:06 ET | 10-Q | Quarterly reportPeriod 2025-03-31 | 0001213900-25-043294 |
| 2025-03-2816:00 ET | 10-K | Annual reportPeriod 2024-12-31 | 0001013762-25-003765 |
| 2024-11-0621:41 ET | 10-Q | Quarterly reportPeriod 2024-09-30 | 0001213900-24-095020 |
| 2024-08-1321:05 ET | 10-Q | Quarterly reportPeriod 2024-06-30 | 0001213900-24-068372 |
| 2024-05-1420:24 ET | 10-Q | Quarterly reportPeriod 2024-03-31 | 0001213900-24-042962 |
| 2024-04-0119:40 ET | 10-K | Annual reportPeriod 2023-12-31 | 0001213900-24-028655 |
| 2023-11-1322:00 ET | 10-Q | Quarterly reportPeriod 2023-09-30 | 0001213900-23-086211 |
| 2023-08-1020:35 ET | 10-Q | Quarterly reportPeriod 2023-06-30 | 0001213900-23-065649 |
| 2023-05-1519:14 ET | 10-Q | Quarterly reportPeriod 2023-03-31 | 0001213900-23-039646 |
| 2023-03-3120:46 ET | 10-K | Annual reportPeriod 2022-12-31 | 0001213900-23-025556 |
| 2022-11-1422:49 ET | 10-Q | Quarterly reportPeriod 2022-09-30 | 0001213900-22-071363 |
| 2022-08-1522:18 ET | 10-Q | Quarterly reportPeriod 2022-06-30 | 0001213900-22-048232 |
| 2022-07-2817:30 ET | 8-K | 4.01 Change of auditor | 0001213900-22-042318 |
| 2022-07-1921:20 ET | 8-K | 4.01 Change of auditor; 9.01 Financial statements and exhibits | 0001213900-22-040363 |
| 2022-05-1621:22 ET | 10-Q | Quarterly reportPeriod 2022-03-31 | 0001213900-22-027248 |
Source: SEC EDGAR, the company’s filing index. Last ingested by Listed: Oct 24, 2026, 15:16 ET. Listed shows no prices and gives no investment advice.