v3.25.1
Document and Entity Information
May 13, 2025
Document and Entity Information [Abstract]  
Document Type 8-K
Document Period End Date May 13, 2025
Entity Registrant Name Y-MABS THERAPEUTICS, INC.
Entity Incorporation, State or Country Code DE
Entity File Number 001-38650
Entity Tax Identification Number 47-4619612
Entity Address, Address Line One 202 Carnegie Center
Entity Address, Adress Line Two Suite 301
Entity Address State Or Province NJ
Entity Address, City or Town Princeton
Entity Address, Postal Zip Code 08540
City Area Code 646
Local Phone Number 885-8505
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, $0.0001 par value
Trading Symbol YMAB
Security Exchange Name NASDAQ
Entity Emerging Growth Company false
Entity Central Index Key 0001722964
Amendment Flag false