<SEC-DOCUMENT>0001485003-21-000166-index.html : 20210802
<SEC-HEADER>0001485003-21-000166.hdr.sgml : 20210802
<ACCEPTANCE-DATETIME>20210802080121
ACCESSION NUMBER:		0001485003-21-000166
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		16
CONFORMED PERIOD OF REPORT:	20210802
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20210802
DATE AS OF CHANGE:		20210802

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:		211134794

	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>sesn-20210802.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: sesn-20210802.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-99.1
<SEQUENCE>2
<FILENAME>ex991-vpasstgcannounceme.htm
<DESCRIPTION>EX-99.1
<TEXT>
Document 2 - file: ex991-vpasstgcannounceme.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.SCH
<SEQUENCE>3
<FILENAME>sesn-20210802.xsd
<DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT
<TEXT>
Document 3 - file: sesn-20210802.xsd

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.LAB
<SEQUENCE>4
<FILENAME>sesn-20210802_lab.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT
<TEXT>
Document 4 - file: sesn-20210802_lab.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>EX-101.PRE
<SEQUENCE>5
<FILENAME>sesn-20210802_pre.xml
<DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT
<TEXT>
Document 5 - file: sesn-20210802_pre.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>6
<FILENAME>ex991-vpasstgcannounceme001.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 6 - file: ex991-vpasstgcannounceme001.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>7
<FILENAME>ex991-vpasstgcannounceme002.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 7 - file: ex991-vpasstgcannounceme002.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>GRAPHIC
<SEQUENCE>8
<FILENAME>ex991-vpasstgcannounceme003.jpg
<DESCRIPTION>GRAPHIC
<TEXT>
Document 8 - file: ex991-vpasstgcannounceme003.jpg

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>9
<FILENAME>sesn-20210802_htm.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 9 - file: sesn-20210802_htm.html

Document 9 - RAW XML: sesn-20210802_htm.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>10
<FILENAME>R1.htm
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 10 - file: R1.htm

</DOCUMENT>
<DOCUMENT>
<TYPE>EXCEL
<SEQUENCE>11
<FILENAME>Financial_Report.xlsx
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 11 - file: Financial_Report.xlsx

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>12
<FILENAME>Show.js
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 12 - file: Show.js

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>13
<FILENAME>report.css
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 13 - file: report.css

</DOCUMENT>
<DOCUMENT>
<TYPE>XML
<SEQUENCE>14
<FILENAME>FilingSummary.xml
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 14 - file: FilingSummary.html

Document 14 - RAW XML: FilingSummary.xml

</DOCUMENT>
<DOCUMENT>
<TYPE>JSON
<SEQUENCE>16
<FILENAME>MetaLinks.json
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 16 - file: MetaLinks.json

</DOCUMENT>
<DOCUMENT>
<TYPE>ZIP
<SEQUENCE>17
<FILENAME>0001485003-21-000166-xbrl.zip
<DESCRIPTION>IDEA: XBRL DOCUMENT
<TEXT>
Document 17 - file: 0001485003-21-000166-xbrl.zip

</DOCUMENT>
</SEC-DOCUMENT>