<SEC-DOCUMENT>0001193125-25-000639-index.html : 20250102
<SEC-HEADER>0001193125-25-000639.hdr.sgml : 20250102
<ACCEPTANCE-DATETIME>20250102160656
ACCESSION NUMBER:		0001193125-25-000639
CONFORMED SUBMISSION TYPE:	6-K
PUBLIC DOCUMENT COUNT:		4
CONFORMED PERIOD OF REPORT:	20250102
FILED AS OF DATE:		20250102
DATE AS OF CHANGE:		20250102

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			C3is Inc.
		CENTRAL INDEX KEY:			0001951067
		STANDARD INDUSTRIAL CLASSIFICATION:	DEEP SEA FOREIGN TRANSPORTATION OF FREIGHT [4412]
		ORGANIZATION NAME:           	01 Energy & Transportation
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			1T
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		6-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-41717
		FILM NUMBER:		25502060

	BUSINESS ADDRESS:	
		STREET 1:		331 KIFISSIAS AVENUE
		STREET 2:		ERITHREA
		CITY:			ATHENS
		STATE:			J3
		ZIP:			14561
		BUSINESS PHONE:		011-30-210-625-0001

	MAIL ADDRESS:	
		STREET 1:		331 KIFISSIAS AVENUE
		STREET 2:		ERITHREA
		CITY:			ATHENS
		STATE:			J3
		ZIP:			14561
</SEC-HEADER>
<DOCUMENT>
<TYPE>6-K
<SEQUENCE>1
<FILENAME>d883835d6k.htm
<DESCRIPTION>6-K
<TEXT>
Document 1 - file: d883835d6k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>2
<FILENAME>d883835dex41.htm
<DESCRIPTION>EX-4.1
<TEXT>
Document 2 - file: d883835dex41.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.2
<SEQUENCE>3
<FILENAME>d883835dex42.htm
<DESCRIPTION>EX-4.2
<TEXT>
Document 3 - file: d883835dex42.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>4
<FILENAME>d883835dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 4 - file: d883835dex991.htm

</DOCUMENT>
</SEC-DOCUMENT>