<SEC-DOCUMENT>0001849867-25-000016-index.html : 20250630
<SEC-HEADER>0001849867-25-000016.hdr.sgml : 20250630
<ACCEPTANCE-DATETIME>20250630161121
ACCESSION NUMBER:		0001849867-25-000016
CONFORMED SUBMISSION TYPE:	11-K
PUBLIC DOCUMENT COUNT:		3
CONFORMED PERIOD OF REPORT:	20241231
FILED AS OF DATE:		20250630
DATE AS OF CHANGE:		20250630

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Catalyst Bancorp, Inc.
		CENTRAL INDEX KEY:			0001849867
		STANDARD INDUSTRIAL CLASSIFICATION:	SAVINGS INSTITUTION, FEDERALLY CHARTERED [6035]
		ORGANIZATION NAME:           	02 Finance
		EIN:				862411762

	FILING VALUES:
		FORM TYPE:		11-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-40893
		FILM NUMBER:		251092117

	BUSINESS ADDRESS:	
		STREET 1:		235 N. COURT STREET
		CITY:			OPELOUSAS
		STATE:			LA
		ZIP:			70570
		BUSINESS PHONE:		337-948-3033

	MAIL ADDRESS:	
		STREET 1:		235 N. COURT STREET
		CITY:			OPELOUSAS
		STATE:			LA
		ZIP:			70570
</SEC-HEADER>
<DOCUMENT>
<TYPE>11-K
<SEQUENCE>1
<FILENAME>clst-20241231x11k.htm
<DESCRIPTION>11-K
<TEXT>
Document 1 - file: clst-20241231x11k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>clst-20241231x11k001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: clst-20241231x11k001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>clst-20241231x11k002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: clst-20241231x11k002.jpg

</DOCUMENT>
</SEC-DOCUMENT>