<SEC-DOCUMENT>0001104659-19-036405-index.html : 20190619
<SEC-HEADER>0001104659-19-036405.hdr.sgml : 20190619
<ACCEPTANCE-DATETIME>20190619171729
ACCESSION NUMBER:		0001104659-19-036405
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		5
CONFORMED PERIOD OF REPORT:	20190619
ITEM INFORMATION:		Entry into a Material Definitive Agreement
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20190619
DATE AS OF CHANGE:		20190619

FILER:

	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

	FILING VALUES:
		FORM TYPE:		8-K
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36296
		FILM NUMBER:		19906765

	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>8-K
<SEQUENCE>1
<FILENAME>a19-11773_18k.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: a19-11773_18k.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-1.1
<SEQUENCE>2
<FILENAME>a19-11773_1ex1d1.htm
<DESCRIPTION>EX-1.1
<TEXT>
Document 2 - file: a19-11773_1ex1d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-4.1
<SEQUENCE>3
<FILENAME>a19-11773_1ex4d1.htm
<DESCRIPTION>EX-4.1
<TEXT>
Document 3 - file: a19-11773_1ex4d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-5.1
<SEQUENCE>4
<FILENAME>a19-11773_1ex5d1.htm
<DESCRIPTION>EX-5.1
<TEXT>
Document 4 - file: a19-11773_1ex5d1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>5
<FILENAME>g117731kii001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 5 - file: g117731kii001.jpg

</DOCUMENT>
</SEC-DOCUMENT>