<SEC-DOCUMENT>0000919574-20-000879-index.html : 20200210
<SEC-HEADER>0000919574-20-000879.hdr.sgml : 20200210
<ACCEPTANCE-DATETIME>20200210171238
ACCESSION NUMBER:		0000919574-20-000879
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20200210
DATE AS OF CHANGE:		20200210

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:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-87951
		FILM NUMBER:		20592934

	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:			KINGDON CAPITAL MANAGEMENT, L.L.C.
		CENTRAL INDEX KEY:			0001000097
		IRS NUMBER:				134015739
		STATE OF INCORPORATION:			DE

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		152 WEST 57TH STREET
		STREET 2:		50TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019
		BUSINESS PHONE:		212-333-0100

	MAIL ADDRESS:	
		STREET 1:		152 WEST 57TH STREET
		STREET 2:		50TH FLOOR
		CITY:			NEW YORK
		STATE:			NY
		ZIP:			10019

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KINGDON CAPITAL MANAGEMENT LLC
		DATE OF NAME CHANGE:	19980914

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	KINGDON CAPITAL MANAGEMENT CORP
		DATE OF NAME CHANGE:	19960408
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>d8475063_13g-a.htm
<TEXT>
Document 1 - file: d8475063_13g-a.htm

</DOCUMENT>
</SEC-DOCUMENT>