<SEC-DOCUMENT>0001485003-22-000155-index.html : 20221107
<SEC-HEADER>0001485003-22-000155.hdr.sgml : 20221107
<ACCEPTANCE-DATETIME>20221107080045
ACCESSION NUMBER:		0001485003-22-000155
CONFORMED SUBMISSION TYPE:	425
PUBLIC DOCUMENT COUNT:		10
FILED AS OF DATE:		20221107
DATE AS OF CHANGE:		20221107

SUBJECT COMPANY:	

	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:		425
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36296
		FILM NUMBER:		221363779

	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

FILED BY:		

	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:		425

	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>425
<SEQUENCE>1
<FILENAME>sesnform3q2022earningsrele.htm
<DESCRIPTION>425
<TEXT>
Document 1 - file: sesnform3q2022earningsrele.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991_3q2022earningsrele.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: ex991_3q2022earningsrele.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>ex991_3q2022earningsrele001.jpg
<TEXT>
Document 3 - file: ex991_3q2022earningsrele001.jpg

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<SEQUENCE>4
<FILENAME>ex991_3q2022earningsrele002.jpg
<TEXT>
Document 4 - file: ex991_3q2022earningsrele002.jpg

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<FILENAME>ex991_3q2022earningsrele003.jpg
<TEXT>
Document 5 - file: ex991_3q2022earningsrele003.jpg

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<SEQUENCE>6
<FILENAME>ex991_3q2022earningsrele004.jpg
<TEXT>
Document 6 - file: ex991_3q2022earningsrele004.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>ex991_3q2022earningsrele005.jpg
<TEXT>
Document 7 - file: ex991_3q2022earningsrele005.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>ex991_3q2022earningsrele006.jpg
<TEXT>
Document 8 - file: ex991_3q2022earningsrele006.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>9
<FILENAME>ex991_3q2022earningsrele007.jpg
<TEXT>
Document 9 - file: ex991_3q2022earningsrele007.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>10
<FILENAME>ex991_3q2022earningsrele008.jpg
<TEXT>
Document 10 - file: ex991_3q2022earningsrele008.jpg

</DOCUMENT>
</SEC-DOCUMENT>