<SEC-DOCUMENT>0001485003-20-000103-index.html : 20201013
<SEC-HEADER>0001485003-20-000103.hdr.sgml : 20201013
<ACCEPTANCE-DATETIME>20201013080034
ACCESSION NUMBER:		0001485003-20-000103
CONFORMED SUBMISSION TYPE:	8-K
PUBLIC DOCUMENT COUNT:		92
CONFORMED PERIOD OF REPORT:	20201013
ITEM INFORMATION:		Other Events
ITEM INFORMATION:		Financial Statements and Exhibits
FILED AS OF DATE:		20201013
DATE AS OF CHANGE:		20201013

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:		201234655

	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-20201013.htm
<DESCRIPTION>8-K
<TEXT>
Document 1 - file: sesn-20201013.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-99.1 <SEQUENCE>2 <FILENAME>ex991updateddeck-flat.htm <DESCRIPTION>EX-99.1 <TEXT> Document 2 - file: ex991updateddeck-flat.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.SCH <SEQUENCE>3 <FILENAME>sesn-20201013.xsd <DESCRIPTION>XBRL TAXONOMY EXTENSION SCHEMA DOCUMENT <TEXT> Document 3 - file: sesn-20201013.xsd
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</DOCUMENT> <DOCUMENT> <TYPE>EX-101.LAB <SEQUENCE>6 <FILENAME>sesn-20201013_lab.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION LABEL LINKBASE DOCUMENT <TEXT> Document 6 - file: sesn-20201013_lab.xml
</DOCUMENT> <DOCUMENT> <TYPE>EX-101.PRE <SEQUENCE>7 <FILENAME>sesn-20201013_pre.xml <DESCRIPTION>XBRL TAXONOMY EXTENSION PRESENTATION LINKBASE DOCUMENT <TEXT> Document 7 - file: sesn-20201013_pre.xml
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>8 <FILENAME>ex991updateddeck-flat001.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 8 - file: ex991updateddeck-flat001.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>11 <FILENAME>ex991updateddeck-flat004.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 11 - file: ex991updateddeck-flat004.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>22 <FILENAME>ex991updateddeck-flat015.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 22 - file: ex991updateddeck-flat015.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>23 <FILENAME>ex991updateddeck-flat016.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 23 - file: ex991updateddeck-flat016.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>25 <FILENAME>ex991updateddeck-flat018.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 25 - file: ex991updateddeck-flat018.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>30 <FILENAME>ex991updateddeck-flat023.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 30 - file: ex991updateddeck-flat023.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>31 <FILENAME>ex991updateddeck-flat024.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 31 - file: ex991updateddeck-flat024.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>33 <FILENAME>ex991updateddeck-flat026.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 33 - file: ex991updateddeck-flat026.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>34 <FILENAME>ex991updateddeck-flat027.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 34 - file: ex991updateddeck-flat027.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>35 <FILENAME>ex991updateddeck-flat028.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 35 - file: ex991updateddeck-flat028.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>36 <FILENAME>ex991updateddeck-flat029.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 36 - file: ex991updateddeck-flat029.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>38 <FILENAME>ex991updateddeck-flat031.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 38 - file: ex991updateddeck-flat031.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>39 <FILENAME>ex991updateddeck-flat032.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 39 - file: ex991updateddeck-flat032.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>40 <FILENAME>ex991updateddeck-flat033.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 40 - file: ex991updateddeck-flat033.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>41 <FILENAME>ex991updateddeck-flat034.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 41 - file: ex991updateddeck-flat034.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>42 <FILENAME>ex991updateddeck-flat035.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 42 - file: ex991updateddeck-flat035.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>43 <FILENAME>ex991updateddeck-flat036.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 43 - file: ex991updateddeck-flat036.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>44 <FILENAME>ex991updateddeck-flat037.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 44 - file: ex991updateddeck-flat037.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>46 <FILENAME>ex991updateddeck-flat039.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 46 - file: ex991updateddeck-flat039.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>47 <FILENAME>ex991updateddeck-flat040.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 47 - file: ex991updateddeck-flat040.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>48 <FILENAME>ex991updateddeck-flat041.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 48 - file: ex991updateddeck-flat041.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>49 <FILENAME>ex991updateddeck-flat042.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 49 - file: ex991updateddeck-flat042.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>50 <FILENAME>ex991updateddeck-flat043.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 50 - file: ex991updateddeck-flat043.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>51 <FILENAME>ex991updateddeck-flat044.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 51 - file: ex991updateddeck-flat044.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>52 <FILENAME>ex991updateddeck-flat045.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 52 - file: ex991updateddeck-flat045.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>53 <FILENAME>ex991updateddeck-flat046.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 53 - file: ex991updateddeck-flat046.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>54 <FILENAME>ex991updateddeck-flat047.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 54 - file: ex991updateddeck-flat047.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>55 <FILENAME>ex991updateddeck-flat048.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 55 - file: ex991updateddeck-flat048.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>56 <FILENAME>ex991updateddeck-flat049.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 56 - file: ex991updateddeck-flat049.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>60 <FILENAME>ex991updateddeck-flat053.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 60 - file: ex991updateddeck-flat053.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>61 <FILENAME>ex991updateddeck-flat054.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 61 - file: ex991updateddeck-flat054.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>62 <FILENAME>ex991updateddeck-flat055.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 62 - file: ex991updateddeck-flat055.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>63 <FILENAME>ex991updateddeck-flat056.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 63 - file: ex991updateddeck-flat056.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>64 <FILENAME>ex991updateddeck-flat057.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 64 - file: ex991updateddeck-flat057.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>65 <FILENAME>ex991updateddeck-flat058.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 65 - file: ex991updateddeck-flat058.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>66 <FILENAME>ex991updateddeck-flat059.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 66 - file: ex991updateddeck-flat059.jpg
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</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>68 <FILENAME>ex991updateddeck-flat061.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 68 - file: ex991updateddeck-flat061.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>69 <FILENAME>ex991updateddeck-flat062.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 69 - file: ex991updateddeck-flat062.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>70 <FILENAME>ex991updateddeck-flat063.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 70 - file: ex991updateddeck-flat063.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>71 <FILENAME>ex991updateddeck-flat064.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 71 - file: ex991updateddeck-flat064.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>72 <FILENAME>ex991updateddeck-flat065.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 72 - file: ex991updateddeck-flat065.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>73 <FILENAME>ex991updateddeck-flat066.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 73 - file: ex991updateddeck-flat066.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>74 <FILENAME>ex991updateddeck-flat067.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 74 - file: ex991updateddeck-flat067.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>75 <FILENAME>ex991updateddeck-flat068.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 75 - file: ex991updateddeck-flat068.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>76 <FILENAME>ex991updateddeck-flat069.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 76 - file: ex991updateddeck-flat069.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>77 <FILENAME>ex991updateddeck-flat070.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 77 - file: ex991updateddeck-flat070.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>78 <FILENAME>ex991updateddeck-flat071.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 78 - file: ex991updateddeck-flat071.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>79 <FILENAME>ex991updateddeck-flat072.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 79 - file: ex991updateddeck-flat072.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>80 <FILENAME>ex991updateddeck-flat073.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 80 - file: ex991updateddeck-flat073.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>81 <FILENAME>ex991updateddeck-flat074.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 81 - file: ex991updateddeck-flat074.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>82 <FILENAME>ex991updateddeck-flat075.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 82 - file: ex991updateddeck-flat075.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>83 <FILENAME>ex991updateddeck-flat076.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 83 - file: ex991updateddeck-flat076.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>84 <FILENAME>ex991updateddeck-flat077.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 84 - file: ex991updateddeck-flat077.jpg
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Document 85 - RAW XML: sesn-20201013_htm.xml
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