C3is Inc. — All Filings
241 total filings on record
Public companies registered with the SEC are required to file periodic reports, disclosures, and notices throughout the year. The most important are the 10-K (annual report), 10-Q (quarterly report), and 8-K (material event notice). Use the filters below to narrow by form type.
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20-F
3
424B1
424B3
424B4
424B5
6-K
8-A12B
CERT
CORRESP
DRS
DRS/A
DRSLTR
EFFECT
F-1
F-1/A
F-1MEF
F-3
POS AM
S-8
SC 13D
SC 13D/A
SC 13G
SCHEDULE 13D/A
SCHEDULE 13G
SCHEDULE 13G/A
UPLOAD
| Form | Description | Accession Number | Filed | Period |
|---|---|---|---|---|
| 424B4 | 424B4 | 0001193125-25-316168 | Dec 11, 2025 | — |
| EFFECT | — | 9999999995-25-003623 | Dec 10, 2025 | — |
| F-1/A | F-1/A | 0001193125-25-309759 | Dec 5, 2025 | — |
| EFFECT | — | 9999999995-25-003342 | Nov 21, 2025 | — |
| 6-K | 6-K | 0001193125-25-286143 | Nov 18, 2025 | — |
| SCHEDULE 13G/A | — | 0001079973-25-001730 | Nov 14, 2025 | — |
| F-1/A | F-1/A | 0001193125-25-262583 | Nov 3, 2025 | — |
| SCHEDULE 13G | — | 0000898432-25-000848 | Oct 28, 2025 | — |
| SCHEDULE 13D/A | — | 0001193125-25-237180 | Oct 10, 2025 | — |
| 424B5 | 424B5 | 0001193125-25-235139 | Oct 9, 2025 | — |
| 6-K | 6-K | 0001193125-25-235146 | Oct 9, 2025 | — |
| SCHEDULE 13G/A | — | 0001193125-25-227569 | Oct 2, 2025 | — |
| SCHEDULE 13D/A | — | 0001193125-25-226783 | Oct 1, 2025 | — |
| POS AM | POS AM | 0001193125-25-226753 | Oct 1, 2025 | — |
| POS AM | POS AM | 0001193125-25-226758 | Oct 1, 2025 | — |
| POS AM | POS AM | 0001193125-25-226737 | Oct 1, 2025 | — |
| 6-K | 6-K | 0001193125-25-221775 | Sep 29, 2025 | Jun 30, 2025 |
| SCHEDULE 13G/A | — | 0001048462-25-000027 | Sep 29, 2025 | — |
| SCHEDULE 13G | — | 0001048462-25-000022 | Sep 24, 2025 | — |
| F-1 | F-1 | 0001193125-25-194998 | Sep 3, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-193999 | Sep 2, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-193992 | Sep 2, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-193996 | Sep 2, 2025 | — |
| 6-K | 6-K | 0001193125-25-193988 | Sep 2, 2025 | — |
| 6-K | 6-K | 0001193125-25-191687 | Aug 29, 2025 | — |
| DRS | — | 0000950123-25-006492 | Jul 21, 2025 | — |
| 6-K | 6-K | 0001193125-25-147002 | Jun 25, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-121689 | May 16, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-121688 | May 16, 2025 | — |
| 6-K | 6-K | 0001193125-25-121676 | May 16, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-121685 | May 16, 2025 | — |
| EFFECT | — | 9999999995-25-001407 | May 5, 2025 | — |
| EFFECT | — | 9999999995-25-001411 | May 5, 2025 | — |
| EFFECT | — | 9999999995-25-001412 | May 5, 2025 | — |
| POS AM | POS AM | 0001193125-25-107483 | Apr 30, 2025 | — |
| POS AM | POS AM | 0001193125-25-107490 | Apr 30, 2025 | — |
| POS AM | POS AM | 0001193125-25-107474 | Apr 30, 2025 | — |
| 20-F | 20-F | 0001193125-25-100539 | Apr 28, 2025 | Dec 31, 2024 |
| 6-K | 6-K | 0001193125-25-073399 | Apr 4, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-073413 | Apr 4, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-073418 | Apr 4, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-073420 | Apr 4, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-070986 | Apr 2, 2025 | — |
| 6-K | 6-K | 0001193125-25-070972 | Apr 2, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-070974 | Apr 2, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-070977 | Apr 2, 2025 | — |
| 6-K | 6-K | 0001193125-25-052572 | Mar 12, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-052575 | Mar 12, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-052580 | Mar 12, 2025 | — |
| 424B3 | 424B3 | 0001193125-25-052583 | Mar 12, 2025 | — |