0001104659-21-079592.txt : 20210610 0001104659-21-079592.hdr.sgml : 20210610 20210610183529 ACCESSION NUMBER: 0001104659-21-079592 CONFORMED SUBMISSION TYPE: 4 PUBLIC DOCUMENT COUNT: 1 CONFORMED PERIOD OF REPORT: 20210608 FILED AS OF DATE: 20210610 DATE AS OF CHANGE: 20210610 REPORTING-OWNER: OWNER DATA: COMPANY CONFORMED NAME: Wedell-Wedellsborg Johan CENTRAL INDEX KEY: 0001753185 FILING VALUES: FORM TYPE: 4 SEC ACT: 1934 Act SEC FILE NUMBER: 001-38650 FILM NUMBER: 211009368 MAIL ADDRESS: STREET 1: RUNGSTED STRANDVEJ 113 CITY: RUNGSTED KYST STATE: G7 ZIP: 2960 ISSUER: COMPANY DATA: COMPANY CONFORMED NAME: Y-mAbs Therapeutics, Inc. CENTRAL INDEX KEY: 0001722964 STANDARD INDUSTRIAL CLASSIFICATION: PHARMACEUTICAL PREPARATIONS [2834] IRS NUMBER: 474619612 STATE OF INCORPORATION: DE FISCAL YEAR END: 1231 BUSINESS ADDRESS: STREET 1: 750 THIRD AVENUE STREET 2: 9TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10017 BUSINESS PHONE: 212-847-9841 MAIL ADDRESS: STREET 1: 750 THIRD AVENUE STREET 2: 9TH FLOOR CITY: NEW YORK STATE: NY ZIP: 10017 4 1 tm2118093-10_4seq1.xml OWNERSHIP DOCUMENT X0306 4 2021-06-08 0 0001722964 Y-mAbs Therapeutics, Inc. YMAB 0001753185 Wedell-Wedellsborg Johan C/O WECO GROUP A/S RUNGSTED STRANDVEJ 113 RUNGSTED KYST G7 2960 DENMARK 1 0 0 0 Common Stock 2021-06-08 4 S 0 33300 35.2761 D 4306394 I By WG Biotech ApS Common Stock 2021-06-09 4 S 0 116700 36.1878 D 4189694 I By WG Biotech ApS This transaction was executed in multiple trades at prices ranging from $34.50 to $35.85. 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. This transaction was executed in multiple trades at prices ranging from $35.785 to $36.35. 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 the majority owner of WG Biotech ApS and as such has sole voting and dispositive power with respect to such shares. /s/ Johan Wedell-Wedellsborg 2021-06-10