CISS - CIK 0001951067
C3is Inc. has filed 260 documents with the SEC between 2022 and 2026. The most frequent type is 424b3 (78 filings), alongside the regular cadence of annual reports, quarterly reports, and event disclosures every public company must make. Use the filters to focus on one filing type, or flip the sort to trace the company's history from its earliest paperwork.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.
| Filing | Type | Filed | Period covered |
|---|---|---|---|
| SCHEDULE 13D/A | - | 2026-05-06 | - |
| SCHEDULE 13D/A | - | 2026-02-04 | - |
| SCHEDULE 13D/A | - | 2025-12-30 | - |
| SCHEDULE 13D/A | - | 2025-12-15 | - |
| SCHEDULE 13D/A | - | 2025-10-10 | - |
| SCHEDULE 13D/A | - | 2025-10-10 | - |
| SCHEDULE 13D/A | - | 2025-10-01 | - |
| SCHEDULE 13D/A | - | 2025-04-15 | - |
| SCHEDULE 13D/A | - | 2025-01-14 | - |