<SEC-DOCUMENT>0001072613-17-000381-index.html : 20170711
<SEC-HEADER>0001072613-17-000381.hdr.sgml : 20170711
<ACCEPTANCE-DATETIME>20170711140216
ACCESSION NUMBER:		0001072613-17-000381
CONFORMED SUBMISSION TYPE:	SC 13D
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20170711
DATE AS OF CHANGE:		20170711
GROUP MEMBERS:		ANTHONY A. FLORENCE, JR.
GROUP MEMBERS:		DAVID M. MOTT
GROUP MEMBERS:		FOREST BASKETT
GROUP MEMBERS:		M. JAMES BARRETT
GROUP MEMBERS:		NEA 14 GP, LTD
GROUP MEMBERS:		NEA PARTNERS 14, L.P.
GROUP MEMBERS:		PATRICK J. KERINS
GROUP MEMBERS:		PETER J. BARRIS
GROUP MEMBERS:		PETER W. SONSINI
GROUP MEMBERS:		RAVI VISWANATHAN
GROUP MEMBERS:		SCOTT D. SANDELL

SUBJECT COMPANY:	

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

	FILING VALUES:
		FORM TYPE:		SC 13D
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90033
		FILM NUMBER:		17959630

	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:			New Enterprise Associates 14, L.P.
		CENTRAL INDEX KEY:			0001544328
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			1231

	FILING VALUES:
		FORM TYPE:		SC 13D

	BUSINESS ADDRESS:	
		STREET 1:		1954 GREENSPRING DRIVE
		STREET 2:		SUITE 600
		CITY:			TIMONIUM
		STATE:			MD
		ZIP:			21093
		BUSINESS PHONE:		410-842-4000

	MAIL ADDRESS:	
		STREET 1:		1954 GREENSPRING DRIVE
		STREET 2:		SUITE 600
		CITY:			TIMONIUM
		STATE:			MD
		ZIP:			21093
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13D
<SEQUENCE>1
<FILENAME>mersana13d_18088.htm
<DESCRIPTION>MERSANA THERAPEUTICS, INC. - SCHEDULE 13D
<TEXT>
Document 1 - file: mersana13d_18088.htm

</DOCUMENT>
</SEC-DOCUMENT>