<SEC-DOCUMENT>0001193125-22-034689-index.html : 20220210
<SEC-HEADER>0001193125-22-034689.hdr.sgml : 20220210
<ACCEPTANCE-DATETIME>20220210172552
ACCESSION NUMBER:		0001193125-22-034689
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		2
FILED AS OF DATE:		20220210
DATE AS OF CHANGE:		20220210
GROUP MEMBERS:		CHRISTOPH H. WESTPHAL
GROUP MEMBERS:		LONGWOOD FUND IV GP, LLC

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			TScan Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001783328
		STANDARD INDUSTRIAL CLASSIFICATION:	BIOLOGICAL PRODUCTS (NO DIAGNOSTIC SUBSTANCES) [2836]
		IRS NUMBER:				825282075
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-92700
		FILM NUMBER:		22615436

	BUSINESS ADDRESS:	
		STREET 1:		830 WINTER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451
		BUSINESS PHONE:		857-399-9500

	MAIL ADDRESS:	
		STREET 1:		830 WINTER STREET
		CITY:			WALTHAM
		STATE:			MA
		ZIP:			02451

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Longwood Fund IV, L.P.
		CENTRAL INDEX KEY:			0001679213
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		THE PRUDENTIAL TOWER
		STREET 2:		800 BOYLSTON ST, SUITE 1555
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
		BUSINESS PHONE:		(617) 351-2590

	MAIL ADDRESS:	
		STREET 1:		THE PRUDENTIAL TOWER
		STREET 2:		800 BOYLSTON ST, SUITE 1555
		CITY:			BOSTON
		STATE:			MA
		ZIP:			02199
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>d317942dsc13g.htm
<DESCRIPTION>SC 13G
<TEXT>
Document 1 - file: d317942dsc13g.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>d317942dex991.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: d317942dex991.htm

</DOCUMENT>
</SEC-DOCUMENT>