System1 SST SEC Filings

NYSE SST
$2.14 +0.04 (+1.90%)
As of: Oct 21, 2026 · 3:59 PM EDT
EDGAR Disclosures

SEC Filings

Source SEC EDGAR

Every SEC filing System1, Inc. (SST) 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
1EFFECTOthers9999999995-26-002578Aug 6, 2026 4:15 AM
28-KCurrent Report0001805833-26-000051Aug 5, 2026 8:59 PM
310-QQuarterly & Annual Report0001805833-26-000050Aug 5, 2026 8:21 PM
48-KCurrent Report0001805833-26-000049Aug 5, 2026 8:05 PM
5S-3Prospectus0001628280-26-052737Aug 4, 2026 9:19 PM
68-KCurrent Report0001805833-26-000044Jul 24, 2026 1:07 PM
74Insider Transaction0001628280-26-048715Jul 17, 2026 10:08 PM
84Insider Transaction0001628280-26-048714Jul 17, 2026 10:07 PM
94Insider Transaction0001628280-26-048713Jul 17, 2026 10:07 PM
104Insider Transaction0001628280-26-048712Jul 17, 2026 10:07 PM
11S-8Prospectus0001805833-26-000042Jun 25, 2026 8:20 PM
12DEF 14AOthers0001805833-26-000040Jun 22, 2026 9:17 PM
13PRE 14AOthers0001805833-26-000036Jun 11, 2026 6:36 PM
144Insider Transaction0001628280-26-039992Jun 2, 2026 10:29 PM
158-KCurrent Report0001805833-26-000030Jun 1, 2026 1:00 PM
168-KCurrent Report0001805833-26-000027May 12, 2026 8:27 PM
1710-QQuarterly & Annual Report0001805833-26-000026May 12, 2026 8:16 PM
188-KCurrent Report0001805833-26-000025May 12, 2026 8:05 PM
1910-KQuarterly & Annual Report0001805833-26-000018Apr 30, 2026 4:10 PM
204Insider Transaction0001628280-26-025911Apr 17, 2026 12:33 AM
214Insider Transaction0001628280-26-025911Apr 17, 2026 12:33 AM
224Insider Transaction0001628280-26-025911Apr 17, 2026 12:33 AM
234Insider Transaction0001628280-26-025910Apr 17, 2026 12:32 AM
244Insider Transaction0001628280-26-025910Apr 17, 2026 12:32 AM
254Insider Transaction0001628280-26-025910Apr 17, 2026 12:32 AM
264Insider Transaction0001628280-26-025909Apr 17, 2026 12:32 AM
274Insider Transaction0001628280-26-025909Apr 17, 2026 12:32 AM
284Insider Transaction0001628280-26-025909Apr 17, 2026 12:32 AM
294Insider Transaction0001628280-26-025908Apr 17, 2026 12:31 AM
304Insider Transaction0001628280-26-025908Apr 17, 2026 12:31 AM
314Insider Transaction0001628280-26-025908Apr 17, 2026 12:31 AM
328-KCurrent Report0001805833-26-000015Mar 11, 2026 8:35 PM
3310-KQuarterly & Annual Report0001805833-26-000014Mar 11, 2026 8:21 PM
348-KCurrent Report0001805833-26-000012Mar 11, 2026 8:05 PM
354Insider Transaction0001628280-26-004229Jan 29, 2026 12:24 AM
364Insider Transaction0001628280-26-004228Jan 29, 2026 12:24 AM
374Insider Transaction0001628280-26-004227Jan 29, 2026 12:24 AM
384Insider Transaction0001628280-26-004226Jan 29, 2026 12:23 AM
394Insider Transaction0001628280-26-002464Jan 16, 2026 11:30 PM
404Insider Transaction0001628280-26-002463Jan 16, 2026 11:29 PM
414Insider Transaction0001628280-26-002462Jan 16, 2026 11:29 PM
424Insider Transaction0001628280-26-002461Jan 16, 2026 11:29 PM
438-KCurrent Report0001805833-26-000003Jan 9, 2026 9:03 PM
448-KCurrent Report0001805833-25-000020Dec 12, 2025 9:05 PM
458-KCurrent Report0001805833-25-000018Dec 3, 2025 9:18 PM
46SCHEDULE 13GBeneficial Ownership Report0001704720-25-000222Dec 2, 2025 10:20 PM
47SCHEDULE 13DBeneficial Ownership Report0001704720-25-000218Dec 2, 2025 10:18 PM
48SCHEDULE 13DBeneficial Ownership Report0001704720-25-000178Nov 12, 2025 12:26 AM
498-KCurrent Report0001805833-25-000016Nov 5, 2025 10:00 PM
5010-QQuarterly & Annual Report0001805833-25-000015Nov 5, 2025 9:20 PM
...

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