<SEC-DOCUMENT>0001104659-21-021871-index.html : 20210212
<SEC-HEADER>0001104659-21-021871.hdr.sgml : 20210212
<ACCEPTANCE-DATETIME>20210212160025
ACCESSION NUMBER:		0001104659-21-021871
CONFORMED SUBMISSION TYPE:	SC 13G/A
PUBLIC DOCUMENT COUNT:		1
FILED AS OF DATE:		20210212
DATE AS OF CHANGE:		20210212

SUBJECT COMPANY:	

	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

	FILING VALUES:
		FORM TYPE:		SC 13G/A
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	005-90649
		FILM NUMBER:		21626962

	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

FILED BY:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			HBM Healthcare Investments (Cayman) Ltd.
		CENTRAL INDEX KEY:			0001232258
		IRS NUMBER:				000000000
		STATE OF INCORPORATION:			E9
		FISCAL YEAR END:			0331

	FILING VALUES:
		FORM TYPE:		SC 13G/A

	BUSINESS ADDRESS:	
		STREET 1:		2454 WEST BAY ROAD, 3RD FLOOR
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			00000
		BUSINESS PHONE:		1 345 946 8002

	MAIL ADDRESS:	
		STREET 1:		P.O BOX 30852
		CITY:			GRAND CAYMAN
		STATE:			E9
		ZIP:			KY1-1204

	FORMER COMPANY:	
		FORMER CONFORMED NAME:	HBM BIOVENTURES CAYMAN LTD
		DATE OF NAME CHANGE:	20030512
</SEC-HEADER>
<DOCUMENT>
<TYPE>SC 13G/A
<SEQUENCE>1
<FILENAME>a21-6110_1sc13ga.htm
<DESCRIPTION>SC 13G/A
<TEXT>
Document 1 - file: a21-6110_1sc13ga.htm

</DOCUMENT>
</SEC-DOCUMENT>