<SEC-DOCUMENT>0001104659-23-022869-index.html : 20230216 <SEC-HEADER>0001104659-23-022869.hdr.sgml : 20230216 <ACCEPTANCE-DATETIME>20230216170526 ACCESSION NUMBER: 0001104659-23-022869 CONFORMED SUBMISSION TYPE: 424B3 PUBLIC DOCUMENT COUNT: 4 FILED AS OF DATE: 20230216 DATE AS OF CHANGE: 20230216 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: 424B3 SEC ACT: 1933 Act SEC FILE NUMBER: 333-267891 FILM NUMBER: 23639275 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>424B3 <SEQUENCE>1 <FILENAME>tm236507-3_424b3.htm <DESCRIPTION>424B3 <TEXT> Document 1 - file: tm236507-3_424b3.htm
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>2 <FILENAME>lg_sesenbio-4c.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 2 - file: lg_sesenbio-4c.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>3 <FILENAME>lg_carismatherapeutics-4c.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 3 - file: lg_carismatherapeutics-4c.jpg
</DOCUMENT> <DOCUMENT> <TYPE>GRAPHIC <SEQUENCE>4 <FILENAME>lg_mackenziepartners-bw.jpg <DESCRIPTION>GRAPHIC <TEXT> Document 4 - file: lg_mackenziepartners-bw.jpg
</DOCUMENT> </SEC-DOCUMENT>