Year archive

C3is Inc. — 2026 filings

All 23 regulatory filings released by C3is Inc. (CISS) in 2026, sourced directly from the official regulator.

23 Filings

2026 Period

2026 filings (23)

Filing	Released	Lang
6-K - C3is Inc. (0001951067) (Filer) Foreign Filer Report	2026-04-27	English
20-F - C3is Inc. (0001951067) (Filer) Annual Report	2026-04-22	English
3 - C3is Inc. (0001951067) (Issuer) Director's Dealing	2026-03-18	English
3 - C3is Inc. (0001951067) (Issuer) Director's Dealing	2026-03-18	English
SCHEDULE 13G Filing Major Shareholding Notification	2026-02-11	English
424B3 Prospectus	2026-01-26	English
424B3 Prospectus	2026-01-26	English
424B3 Prospectus	2026-01-26	English
424B3 Prospectus	2026-01-26	English
6-K Foreign Filer Report	2026-01-26	English
424B3 Prospectus	2026-01-22	English
424B3 Prospectus	2026-01-22	English
424B3 Prospectus	2026-01-22	English
424B3 Prospectus	2026-01-22	English
6-K Foreign Filer Report	2026-01-22	English
424B3 Prospectus	2026-01-20	English
424B3 Prospectus	2026-01-20	English
424B3 Prospectus	2026-01-20	English
424B3 Prospectus	2026-01-20	English
6-K Foreign Filer Report	2026-01-20	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-14	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-13	English
Major Shareholding Notification 2026 Major Shareholding Notification	2026-01-08	English