C3is Inc. (CISS)

CIK 1951067 · operating company. SEC filings, financial statements, 10-K sections, 8-K items and insider trades for C3is Inc..

Recent SEC filings

FiledFormAccession number
Sep 3, 2026SCHEDULE 13G0001235976-26-000001
Aug 28, 2026SCHEDULE 13D/A0001193125-26-374929
Aug 27, 2026424B30001193125-26-369643
Aug 27, 20266-K0001193125-26-369519
Aug 27, 2026424B30001193125-26-369646
Aug 27, 2026424B30001193125-26-369641
Aug 27, 2026424B30001193125-26-369642
Aug 27, 2026424B30001193125-26-369639
Aug 19, 20266-K0001193125-26-356854
Aug 19, 2026424B30001193125-26-357080
Aug 19, 2026SCHEDULE 13G0001595888-26-000109
Aug 19, 2026424B30001193125-26-357093
Aug 19, 2026424B30001193125-26-357102
Aug 19, 2026424B30001193125-26-357115
Aug 19, 2026424B30001193125-26-357073
Aug 17, 20266-K0001193125-26-354028
Aug 14, 2026SCHEDULE 13G/A0001079973-26-001123
Aug 14, 2026SCHEDULE 13G/A0001079973-26-001098
Aug 4, 2026SCHEDULE 13G0001753926-26-001328
Aug 3, 2026SCHEDULE 13G0001649553-26-000076
Aug 3, 2026SCHEDULE 13G/A0001094891-26-000264
Jul 31, 2026SCHEDULE 13G0000929638-26-002851
Jul 30, 2026SCHEDULE 13D/A0001193125-26-326456
Jul 28, 2026424B30001193125-26-321178
Jul 28, 2026424B30001193125-26-321141