<SEC-DOCUMENT>0001485003-23-000068-index.html : 20230227
<SEC-HEADER>0001485003-23-000068.hdr.sgml : 20230227
<ACCEPTANCE-DATETIME>20230227080132
ACCESSION NUMBER:		0001485003-23-000068
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		12
CONFORMED PERIOD OF REPORT:	20230224
ITEM INFORMATION:		Other Events
FILED AS OF DATE:		20230227
DATE AS OF CHANGE:		20230227

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:		23670098

	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-20230224.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: sesn-20230224.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>2 <FILENAME>sesn-20230224.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 2 - file: sesn-20230224.xsd
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>3 <FILENAME>sesn-20230224_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT <TEXT> Document 3 - file: sesn-20230224_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>4 <FILENAME>sesn-20230224_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT <TEXT> Document 4 - file: sesn-20230224_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>5 <FILENAME>R1.htm <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 5 - file: R1.htm
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>6 <FILENAME>sesn-20230224_htm.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 6 - file: sesn-20230224_htm.html
Document 6 - RAW XML: sesn-20230224_htm.xml
</DOCUMENT> <DOCUMENT> <TYPE>EXCEL <SEQUENCE>7 <FILENAME>Financial_Report.xlsx <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 7 - file: Financial_Report.xlsx
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>8 <FILENAME>Show.js <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 8 - file: Show.js
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>9 <FILENAME>report.css <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 9 - file: report.css
</DOCUMENT> <DOCUMENT> <TYPE>XML <SEQUENCE>10 <FILENAME>FilingSummary.xml <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 10 - file: FilingSummary.html
Document 10 - RAW XML: FilingSummary.xml
</DOCUMENT> <DOCUMENT> <TYPE>JSON <SEQUENCE>12 <FILENAME>MetaLinks.json <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 12 - file: MetaLinks.json
</DOCUMENT> <DOCUMENT> <TYPE>ZIP <SEQUENCE>13 <FILENAME>0001485003-23-000068-xbrl.zip <DESCRIPTION>IDEA: XBRL DOCUMENT <TEXT> Document 13 - file: 0001485003-23-000068-xbrl.zip
</DOCUMENT> </SEC-DOCUMENT>