0001104659-24-031941.txt : 20240307 0001104659-24-031941.hdr.sgml : 20240307 20240307170109 ACCESSION NUMBER: 0001104659-24-031941 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: Gad Thomas CENTRAL INDEX KEY: 0001753224 ORGANIZATION NAME: FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38650 FILM NUMBER: 24731080 MAIL ADDRESS: STREET 1: C/O Y-MABS THERAPEUTICS, INC. STREET 2: 230 PARK AVENUE, 33RD FLOOR CITY: NEW YORK STATE: NY ZIP: 10169 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 tm248257-2_4seq1.xml OWNERSHIP DOCUMENT X0508 4 2024-03-05 0 0001722964 Y-mAbs Therapeutics, Inc. YMAB 0001753224 Gad Thomas C/O Y-MABS THERAPEUTICS, INC. 230 PARK AVENUE NEW YORK NY 10169 1 1 0 0 CHIEF BUSINESS OFFICER 0 Common Stock 2024-03-05 4 S 0 3900 16.44 D 158700 D Common Stock 265032 I By GAD Enterprises LLC Common Stock 60000 I By Children Nondiscretionary sale to cover tax liability associated with the vesting and settlement of restricted stock units. This transaction was executed in multiple trades at prices ranging from $16.41 to $16.52, inclusive. The price reported reflects the weighted average sale price. The Reporting Person hereby undertakes to provide upon request to the SEC staff, the Issuer or a security holder of the Issuer full information regarding the number of shares and prices at which the transaction was effected. Reporting Person is sole member of GAD Enterprises, LLC and the sole member and manager of GAD Management, LLC, the manager of GAD Enterprises, LLC, and as such Reporting Person has sole voting and dispositive power with respect to such shares. Represents shares owned by Reporting Person's children who are deemed to share Reporting Person's household. /s/ John LaRocca, Attorney-in-Fact 2024-03-07