CISS - Company ID 0001951067
C3is Inc. has filed 260 public company documents 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.
| Type | Filing | Filed | Period covered | Open |
|---|---|---|---|---|
| 424B3 | 424B3 | 1mo ago2026-05-18 | - | View filing |
| 424B3 | 424B3 | 1mo ago2026-05-18 | - | View filing |
| 424B3 | 424B3 | 1mo ago2026-05-18 | - | View filing |
| 424B3 | 424B3 | 1mo ago2026-05-18 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-25 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-25 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-25 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-25 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-19 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-19 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-19 | - | View filing |
| 424B3 | 424B3 | 4mo ago2026-02-19 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-26 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-26 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-26 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-26 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-22 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-22 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-22 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-22 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-20 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-20 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-20 | - | View filing |
| 424B3 | 424B3 | 5mo ago2026-01-20 | - | View filing |
| 424B3 | 424B3 | 6mo ago2025-12-19 | - | View filing |
| 424B3 | 424B3 | 6mo ago2025-12-19 | - | View filing |
| 424B3 | 424B3 | 6mo ago2025-12-19 | - | View filing |
| 424B3 | 424B3 | 6mo ago2025-12-19 | - | View filing |
| 424B3 | 424B3 | 10mo ago2025-09-02 | - | View filing |
| 424B3 | 424B3 | 10mo ago2025-09-02 | - | View filing |
| 424B3 | 424B3 | 10mo ago2025-09-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-05-16 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-05-16 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-05-16 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-04-04 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-04-04 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-04-04 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-04-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-04-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-04-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-03-12 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-03-12 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-03-12 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-01-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-01-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2025-01-02 | - | View filing |
| 424B3 | 424B3 | 1y ago2024-11-19 | - | View filing |
| 424B3 | 424B3 | 1y ago2024-11-19 | - | View filing |
| 424B3 | 424B3 | 1y ago2024-11-19 | - | View filing |
| 424B3 | 424B3 | 1y ago2024-09-30 | - | View filing |