<SEC-DOCUMENT>0001193125-21-082805-index.html : 20210316
<SEC-HEADER>0001193125-21-082805.hdr.sgml : 20210316
<ACCEPTANCE-DATETIME>20210316161138
ACCESSION NUMBER:		0001193125-21-082805
CONFORMED SUBMISSION TYPE:	S-8
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20210316
DATE AS OF CHANGE:		20210316
EFFECTIVENESS DATE:		20210316

FILER:

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cabaletta Bio, Inc.
		CENTRAL INDEX KEY:			0001759138
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		S-8
		SEC ACT:		1933 Act
		SEC FILE NUMBER:	333-254342
		FILM NUMBER:		21745816

	BUSINESS ADDRESS:	
		STREET 1:		2929 ARCH STREET
		STREET 2:		SUITE 600
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19104
		BUSINESS PHONE:		(267) 759-3100

	MAIL ADDRESS:	
		STREET 1:		2929 ARCH STREET
		STREET 2:		SUITE 600
		CITY:			PHILADELPHIA
		STATE:			PA
		ZIP:			19104
</SEC-HEADER>
<DOCUMENT>
<TYPE>S-8
<SEQUENCE>1
<FILENAME>d100997ds8.htm
<DESCRIPTION>S-8
<TEXT>
Document 1 - file: d100997ds8.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>2
<FILENAME>d100997dex51.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 2 - file: d100997dex51.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-23.1
<SEQUENCE>3
<FILENAME>d100997dex231.htm
<DESCRIPTION>EX-23.1
<TEXT>
Document 3 - file: d100997dex231.htm

</DOCUMENT>
</SEC-DOCUMENT>