<SEC-DOCUMENT>0001493152-21-003530-index.html : 20210212 <SEC-HEADER>0001493152-21-003530.hdr.sgml : 20210212 <ACCEPTANCE-DATETIME>20210212095235 ACCESSION NUMBER: 0001493152-21-003530 CONFORMED SUBMISSION TYPE: SC 13G/A PUBLIC DOCUMENT COUNT: 2 FILED AS OF DATE: 20210212 DATE AS OF CHANGE: 20210212 SUBJECT COMPANY: COMPANY DATA: COMPANY CONFORMED NAME: Celldex Therapeutics, Inc. CENTRAL INDEX KEY: 0000744218 STANDARD INDUSTRIAL CLASSIFICATION: IN VITRO & IN VIVO DIAGNOSTIC SUBSTANCES [2835] IRS NUMBER: 133191702 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A SEC ACT: 1934 Act SEC FILE NUMBER: 005-37761 FILM NUMBER: 21623552 BUSINESS ADDRESS: STREET 1: 53 FRONTAGE ROAD STREET 2: SUITE 220 CITY: HAMPTON STATE: NJ ZIP: 08827 BUSINESS PHONE: 908-200-7500 MAIL ADDRESS: STREET 1: 53 FRONTAGE ROAD STREET 2: SUITE 220 CITY: HAMPTON STATE: NJ ZIP: 08827 FORMER COMPANY: FORMER CONFORMED NAME: AVANT IMMUNOTHERAPEUTICS INC DATE OF NAME CHANGE: 19980828 FORMER COMPANY: FORMER CONFORMED NAME: T CELL SCIENCES INC DATE OF NAME CHANGE: 19920703 FILED BY: COMPANY DATA: COMPANY CONFORMED NAME: RTW INVESTMENTS, LP CENTRAL INDEX KEY: 0001493215 IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 FILING VALUES: FORM TYPE: SC 13G/A BUSINESS ADDRESS: STREET 1: 40 10TH AVENUE STREET 2: 7TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10014 BUSINESS PHONE: 646-597-6980 MAIL ADDRESS: STREET 1: 40 10TH AVENUE STREET 2: 7TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10014 FORMER COMPANY: FORMER CONFORMED NAME: RTW INVESTMENTS, LLC DATE OF NAME CHANGE: 20100602 </SEC-HEADER> <DOCUMENT> <TYPE>SC 13G/A <SEQUENCE>1 <FILENAME>formsc13ga.htm <TEXT> Document 1 - file: formsc13ga.htm
</DOCUMENT> <DOCUMENT> <TYPE>EX-1 <SEQUENCE>2 <FILENAME>ex1.htm <TEXT> Document 2 - file: ex1.htm
</DOCUMENT> </SEC-DOCUMENT>