System1, Inc. - SST
All tracked SEC files for this issuer. Showing up to 200 latest records.
Need parsed ownership details (13D/13G with shares/percent)?
Open ownership details
Form 4 = insider transactions report. Form 144 = notice of proposed sale (not a completed trade confirmation).
Files summary
Total files loaded: 21
Latest filed: May 12, 2026
| Form | Count |
|---|---|
| 4 | 12 |
| 8-K | 7 |
| SCHEDULE 13D/A | 1 |
| SCHEDULE 13G/A | 1 |
Latest files
| Filed | Form | Report period | Accession | SEC |
|---|---|---|---|---|
| May 12, 2026 | 8-K | May 12, 2026 | 0001805833-26-000025 | View |
| May 12, 2026 | 8-K | May 12, 2026 | 0001805833-26-000027 | View |
| Apr 17, 2026 | 4 | Apr 15, 2026 | 0001628280-26-025908 | View |
| Apr 17, 2026 | 4 | Apr 15, 2026 | 0001628280-26-025909 | View |
| Apr 17, 2026 | 4 | Apr 15, 2026 | 0001628280-26-025910 | View |
| Apr 17, 2026 | 4 | Apr 15, 2026 | 0001628280-26-025911 | View |
| Mar 11, 2026 | 8-K | Mar 11, 2026 | 0001805833-26-000012 | View |
| Mar 11, 2026 | 8-K | Mar 11, 2026 | 0001805833-26-000015 | View |
| Jan 29, 2026 | 4 | Jan 28, 2026 | 0001628280-26-004226 | View |
| Jan 29, 2026 | 4 | Jan 28, 2026 | 0001628280-26-004227 | View |
| Jan 29, 2026 | 4 | Jan 28, 2026 | 0001628280-26-004228 | View |
| Jan 29, 2026 | 4 | Jan 28, 2026 | 0001628280-26-004229 | View |
| Jan 16, 2026 | 4 | Jan 15, 2026 | 0001628280-26-002461 | View |
| Jan 16, 2026 | 4 | Jan 15, 2026 | 0001628280-26-002462 | View |
| Jan 16, 2026 | 4 | Jan 15, 2026 | 0001628280-26-002463 | View |
| Jan 16, 2026 | 4 | Jan 15, 2026 | 0001628280-26-002464 | View |
| Jan 09, 2026 | 8-K | Jan 09, 2026 | 0001805833-26-000003 | View |
| Dec 12, 2025 | 8-K | Dec 08, 2025 | 0001805833-25-000020 | View |
| Dec 03, 2025 | 8-K | Dec 01, 2025 | 0001805833-25-000018 | View |
| Dec 02, 2025 | SCHEDULE 13D/A | — | 0001704720-25-000218 | View |
| Dec 02, 2025 | SCHEDULE 13G/A | — | 0001704720-25-000222 | View |