<SEC-DOCUMENT>0001485003-19-000076-index.html : 20190905
<SEC-HEADER>0001485003-19-000076.hdr.sgml : 20190905
<ACCEPTANCE-DATETIME>20190905172715
ACCESSION NUMBER:		0001485003-19-000076
CONFORMED SUBMISSION TYPE:	3
PUBLIC DOCUMENT COUNT:		2
CONFORMED PERIOD OF REPORT:	20190826
FILED AS OF DATE:		20190905
DATE AS OF CHANGE:		20190905

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Anderson Kirstin
		CENTRAL INDEX KEY:			0001786554

	FILING VALUES:
		FORM TYPE:		3
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36296
		FILM NUMBER:		191078042

	MAIL ADDRESS:	
		STREET 1:		245 FIRST STREET, SUITE 1800
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Sesen Bio, Inc.
		CENTRAL INDEX KEY:			0001485003
		STANDARD INDUSTRIAL CLASSIFICATION:	PHARMACEUTICAL PREPARATIONS [2834]
		IRS NUMBER:				262025616
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		245 FIRST STREET
		STREET 2:		SUITE 1800
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142
		BUSINESS PHONE:		617-444-8550

	MAIL ADDRESS:	
		STREET 1:		245 FIRST STREET
		STREET 2:		SUITE 1800
		CITY:			CAMBRIDGE
		STATE:			MA
		ZIP:			02142

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	Eleven Biotherapeutics, Inc.
		DATE OF NAME CHANGE:	20100223
</SEC-HEADER>
<DOCUMENT>
<TYPE>3
<SEQUENCE>1
<FILENAME>wf-form3_156771881991462.xml
<DESCRIPTION>FORM 3
<TEXT>
Document 1 - file: wf-form3_156771881991462.html

Document 1 - RAW XML: wf-form3_156771881991462.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-24
<SEQUENCE>2
<FILENAME>sesn-limitedpowerofattorne.htm
<DESCRIPTION>KIRSTIN ANDERSON POA
<TEXT>
Document 2 - file: sesn-limitedpowerofattorne.htm

</DOCUMENT>
</SEC-DOCUMENT>