<SEC-DOCUMENT>0001104659-24-062787-index.html : 20240517
<SEC-HEADER>0001104659-24-062787.hdr.sgml : 20240517
<ACCEPTANCE-DATETIME>20240517082606
ACCESSION NUMBER:		0001104659-24-062787
CONFORMED SUBMISSION TYPE:	SC 13G
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20240517
DATE AS OF CHANGE:		20240517
GROUP MEMBERS:		COSTAS CONSTANTINIDES
GROUP MEMBERS:		IAN CHAROUB
GROUP MEMBERS:		NEXTECH CROSSOVER I SCSP
GROUP MEMBERS:		ROCCO SGOBBO

SUBJECT COMPANY:	

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Mersana Therapeutics, Inc.
		CENTRAL INDEX KEY:			0001442836
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		ORGANIZATION NAME:           	03 Life Sciences
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90033
		FILM NUMBER:		24957784

	BUSINESS ADDRESS:	
		STREET 1:		840 MEMORIAL DRIVE
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139
		BUSINESS PHONE:		617-498-0020

	MAIL ADDRESS:	
		STREET 1:		840 MEMORIAL DRIVE
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02139

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	MERSANA THERAPEUTICS INC
		DATE OF NAME CHANGE:	20080813

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Nextech Crossover I GP S.a r.l.
		CENTRAL INDEX KEY:			0001916761
		ORGANIZATION NAME:           	
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			N4
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13G

	BUSINESS ADDRESS:	
		STREET 1:		8 RUE LOU HEMMER
		CITY:			SENNINGERBERG
		STATE:			N4
		ZIP:			L-1748
		BUSINESS PHONE:		41.443666611

	MAIL ADDRESS:	
		STREET 1:		8 RUE LOU HEMMER
		CITY:			SENNINGERBERG
		STATE:			N4
		ZIP:			L-1748
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G
<SEQUENCE>1
<FILENAME>tm2414799d1_sc13g.htm
<DESCRIPTION>SC 13G
<TEXT>
Document 1 - file: tm2414799d1_sc13g.htm

</DOCUMENT>
</SEC-DOCUMENT>