0001104659-23-124686.txt : 20231208 0001104659-23-124686.hdr.sgml : 20231208 20231208161011 ACCESSION NUMBER: 0001104659-23-124686 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20231206 FILED AS OF DATE: 20231208 DATE AS OF CHANGE: 20231208 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Burns John Thomas CENTRAL INDEX KEY: 0001568734 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-33958 FILM NUMBER: 231475481 MAIL ADDRESS: STREET 1: 16760 SW UPPER BOONES FERRY RD STREET 2: SUITE 101 CITY: PORTLAND STATE: X1 ZIP: 97224 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: SELLAS Life Sciences Group, Inc. CENTRAL INDEX KEY: 0001390478 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 000000000 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 7 TIMES SQUARE STREET 2: SUITE 2503 CITY: NEW YORK STATE: NY ZIP: 10036 BUSINESS PHONE: 6462005278 MAIL ADDRESS: STREET 1: 7 TIMES SQUARE STREET 2: SUITE 2503 CITY: NEW YORK STATE: NY ZIP: 10036 FORMER COMPANY: FORMER CONFORMED NAME: Galena Biopharma, Inc. DATE OF NAME CHANGE: 20110926 FORMER COMPANY: FORMER CONFORMED NAME: RXi Pharmaceuticals Corp DATE OF NAME CHANGE: 20110926 FORMER COMPANY: FORMER CONFORMED NAME: GALENA BIOPHARMA, INC. DATE OF NAME CHANGE: 20110922 4 1 tm2332459-1_4seq1.xml OWNERSHIP DOCUMENT X0508 4 2023-12-06 0 0001390478 SELLAS Life Sciences Group, Inc. SLS 0001568734 Burns John Thomas C/O SELLAS LIFE SCIENCES GROUP, INC., 7 TIMES SQUARE, SUITE 2503 NEW YORK NY 10036 0 1 0 0 CFO 0 Class A Common Stock 2023-12-06 4 J 0 2929 1.08 D 54927 D Transaction relates to shares of common stock withheld by SELLAS Life Sciences Group, Inc. (the "Issuer") to cover tax withholding obligations of the Reporting Person in connection with the vesting of Restricted Stock Units ("RSUs"). Represents the number shares of common stock withheld by the Issuer to cover tax withholding obligations of the Reporting Person in connection with the vesting of RSUs. /s/ John Burns 2023-12-08