Deep Fission FISN SEC Filings

NASDAQ FISN
$2.40 -0.23 (-8.63%)
As of: Oct 22, 2026 · 11:25 AM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing Deep Fission, Inc. (FISN) has made, as reported on EDGAR — annual and quarterly reports, current reports, insider transactions and ownership disclosures. Filter by form group, form type or period, and open any filing or its index directly.

Form Type
# Form Type Form Group Accession Date Filing Index
18-KCurrent Report0001104659-26-117389Oct 20, 2026 11:54 PM
28-KCurrent Report0001104659-26-109201Sep 21, 2026 11:26 AM
310-QQuarterly & Annual Report0001104659-26-089884Aug 3, 2026 5:25 PM
48-KCurrent Report0001104659-26-088125Jul 29, 2026 4:02 PM
54Insider Transaction0001104659-26-087136Jul 27, 2026 9:03 PM
64Insider Transaction0001104659-26-087135Jul 27, 2026 9:02 PM
74Insider Transaction0001104659-26-087134Jul 27, 2026 9:01 PM
84Insider Transaction0001104659-26-087133Jul 27, 2026 9:00 PM
9S-8Prospectus0001104659-26-085074Jul 20, 2026 8:15 PM
108-KCurrent Report0001104659-26-084625Jul 17, 2026 8:06 PM
118-KCurrent Report0001104659-26-076400Jun 22, 2026 8:20 PM
12424B4Prospectus0001104659-26-075763Jun 18, 2026 8:27 PM
13EFFECTOthers9999999995-26-002042Jun 17, 2026 4:15 AM
14DEF 14AOthers0001104659-26-075196Jun 17, 2026 8:46 PM
15CERTOthers0001354457-26-000586Jun 17, 2026 6:22 PM
16S-1Prospectus0001104659-26-072286Jun 10, 2026 7:07 PM
178-A12BOthers0001104659-26-067221May 28, 2026 11:07 AM
18S-1Prospectus0001104659-26-064074May 20, 2026 6:08 AM
19SCHEDULE 13GBeneficial Ownership Report0001213900-26-057869May 15, 2026 8:39 PM
2010-QQuarterly & Annual Report0001104659-26-057835May 8, 2026 7:09 PM
2110-QQuarterly & Annual Report0001104659-26-057835May 8, 2026 7:09 PM
2210-QQuarterly & Annual Report0001104659-26-057835May 8, 2026 7:09 PM
23EFFECTOthers9999999995-26-001434May 1, 2026 4:15 AM
24EFFECTOthers9999999995-26-001430May 1, 2026 4:15 AM
25424B3Prospectus0001104659-26-054168May 1, 2026 8:27 PM
26424B3Prospectus0001104659-26-054157May 1, 2026 8:22 PM
273Insider Transaction0001104659-26-051321Apr 29, 2026 5:47 PM
283Insider Transaction0001104659-26-051321Apr 29, 2026 5:47 PM
293Insider Transaction0001104659-26-051321Apr 29, 2026 5:47 PM
308-KCurrent Report0001104659-26-046488Apr 22, 2026 2:11 PM
31S-1Prospectus0001104659-26-045974Apr 21, 2026 7:50 PM
32POS AMOthers0001104659-26-045965Apr 21, 2026 7:41 PM
3310-KQuarterly & Annual Report0001104659-26-043870Apr 15, 2026 9:28 PM
348-KCurrent Report0001104659-26-041290Apr 9, 2026 2:46 PM
35NT 10-KQuarterly & Annual Report0001104659-26-037854Mar 31, 2026 8:54 PM
364Insider Transaction0001104659-26-025958Mar 10, 2026 9:31 PM
374Insider Transaction0001104659-26-025958Mar 10, 2026 9:31 PM
384Insider Transaction0001104659-26-025958Mar 10, 2026 9:31 PM
394Insider Transaction0001104659-26-025957Mar 10, 2026 9:30 PM
404Insider Transaction0001104659-26-025957Mar 10, 2026 9:30 PM
414Insider Transaction0001104659-26-025957Mar 10, 2026 9:30 PM
424Insider Transaction0001104659-26-025956Mar 10, 2026 9:29 PM
434Insider Transaction0001104659-26-025954Mar 10, 2026 9:29 PM
444Insider Transaction0001104659-26-025954Mar 10, 2026 9:29 PM
454Insider Transaction0001104659-26-025954Mar 10, 2026 9:29 PM
464Insider Transaction0001104659-26-025952Mar 10, 2026 9:28 PM
474Insider Transaction0001104659-26-025950Mar 10, 2026 9:27 PM
484Insider Transaction0001104659-26-025950Mar 10, 2026 9:27 PM
494Insider Transaction0001104659-26-025950Mar 10, 2026 9:27 PM
504Insider Transaction0001104659-26-025947Mar 10, 2026 9:26 PM

Deep Fission, Inc. SEC Filings API

Pull Deep Fission, Inc.'s SEC filing index, with links to every filing and exhibit, into your own tools with the Business Quant SEC Filings API. Swap YOUR_API_KEY for your own key.

https://data.businessquant.com/secfilings?ticker=FISN&formtype=10-K,10-Q&api_key=YOUR_API_KEY