Form 6-K - Report of foreign issuer [Rules 13a-16 and 15d-16]:
SEC Accession No. 0001193125-26-228033
Filing Date
2026-05-18
Accepted
2026-05-18 09:11:48
Documents
3
Period of Report
2026-05-18

Document Format Files

Seq Description Document Type Size
1 6-K d71100d6k.htm 6-K 17499
2 EX-99.1 d71100dex991.htm EX-99.1 160476
3 GRAPHIC g71100dsp5_711.jpg GRAPHIC 7024
  Complete submission text file 0001193125-26-228033.txt   188866
Mailing Address 331 KIFISSIAS AVENUE ERITHREA ATHENS J3 14561
Business Address 331 KIFISSIAS AVENUE ERITHREA ATHENS J3 14561 011-30-210-625-0001
C3is Inc. (Filer) CIK: 0001951067 (see all company filings)

EIN.: 000000000 | State of Incorp.: 1T | Fiscal Year End: 1231
Type: 6-K | Act: 34 | File No.: 001-41717 | Film No.: 26990999
SIC: 4412 Deep Sea Foreign Transportation of Freight
(CF Office: 01 Energy & Transportation)