<SEC-DOCUMENT>0000950170-24-068982-index.html : 20240604
<SEC-HEADER>0000950170-24-068982.hdr.sgml : 20240604
<ACCEPTANCE-DATETIME>20240604191453
ACCESSION NUMBER:		0000950170-24-068982
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20240603
FILED AS OF DATE:		20240604
DATE AS OF CHANGE:		20240604

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Tomasello Shawn
		CENTRAL INDEX KEY:			0001617239
		ORGANIZATION NAME:           	

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-39103
		FILM NUMBER:		241020173

	MAIL ADDRESS:	
		STREET 1:		C/O PHARMACYCLICS, INC
		STREET 2:		995 EAST ARQUES AVENUE
		CITY:			SUNNYVALE
		STATE:			CA
		ZIP:			94085

	FORMER NAME:	
		FORMER CONFORMED NAME:	Tomasello Shawn Fassbender
		DATE OF NAME CHANGE:	20140819

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Cabaletta Bio, Inc.
		CENTRAL INDEX KEY:			0001759138
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	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>
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<DESCRIPTION>4
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Document 1 - file: ownership.html

Document 1 - RAW XML: ownership.xml

</DOCUMENT>
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