<SEC-DOCUMENT>0001485003-22-000050-index.html : 20220428
<SEC-HEADER>0001485003-22-000050.hdr.sgml : 20220428
<ACCEPTANCE-DATETIME>20220428081305
ACCESSION NUMBER:		0001485003-22-000050
CONFORMED SUBMISSION TYPE:	DEFA14A
PUBLIC DOCUMENT COUNT:		3
FILED AS OF DATE:		20220428
DATE AS OF CHANGE:		20220428

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:		DEFA14A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-36296
		FILM NUMBER:		22862350

	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>DEFA14A
<SEQUENCE>1
<FILENAME>defa14a.htm
<DESCRIPTION>DEFA14A
<TEXT>
Document 1 - file: defa14a.htm

</DOCUMENT>
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<TYPE>GRAPHIC
<SEQUENCE>2
<FILENAME>keyquestionsforstockhold001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 2 - file: keyquestionsforstockhold001.jpg

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<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>3
<FILENAME>keyquestionsforstockhold002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 3 - file: keyquestionsforstockhold002.jpg

</DOCUMENT>
</SEC-DOCUMENT>