<SEC-DOCUMENT>0001104659-21-132432-index.html : 20211101
<SEC-HEADER>0001104659-21-132432.hdr.sgml : 20211101
<ACCEPTANCE-DATETIME>20211101171526
ACCESSION NUMBER:		0001104659-21-132432
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20211029
FILED AS OF DATE:		20211101
DATE AS OF CHANGE:		20211101

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Gad Thomas
		CENTRAL INDEX KEY:			0001753224

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-38650
		FILM NUMBER:		211368274

	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]
		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
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>tm2131562-1_4seq1.xml
<DESCRIPTION>OWNERSHIP DOCUMENT
<TEXT>
Document 1 - file: tm2131562-1_4seq1.html

Document 1 - RAW XML: tm2131562-1_4seq1.xml

</DOCUMENT>
</SEC-DOCUMENT>