0001104659-24-031939.txt : 20240307 0001104659-24-031939.hdr.sgml : 20240307 20240307165959 ACCESSION NUMBER: 0001104659-24-031939 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20240305 FILED AS OF DATE: 20240307 DATE AS OF CHANGE: 20240307 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Smith Susan Laura CENTRAL INDEX KEY: 0001901039 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38650 FILM NUMBER: 24731052 MAIL ADDRESS: STREET 1: 5 OVERLOOK CT CITY: LAMBERTVILLE STATE: NJ ZIP: 08530 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Y-mAbs Therapeutics, Inc. CENTRAL INDEX KEY: 0001722964 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] ORGANIZATION NAME: 03 Life Sciences IRS NUMBER: 474619612 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 230 PARK AVENUE STREET 2: SUITE 3350 CITY: NEW YORK STATE: NY ZIP: 10169 BUSINESS PHONE: 212-847-9841 MAIL ADDRESS: STREET 1: 230 PARK AVENUE STREET 2: SUITE 3350 CITY: NEW YORK STATE: NY ZIP: 10169 4 1 tm248257-1_4seq1.xml OWNERSHIP DOCUMENT X0508 4 2024-03-05 0 0001722964 Y-mAbs Therapeutics, Inc. YMAB 0001901039 Smith Susan Laura C/O Y-MABS THERAPEUTICS, INC. 230 PARK AVENUE, SUITE 3350 NEW YORK NY 10169 0 1 0 0 SVP & CHIEF COMMERCIAL OFFICER 0 Common Stock 2024-03-05 4 S 0 1682 16.55 D 33918 D Nondiscretionary sale to cover tax liability associated with the vesting and settlement of restricted stock units. /s/ John LaRocca, Attorney-in-Fact 2024-03-07