0001722964 2024-03-08 2024-03-08 iso4217:USD shares iso4217:USD shares false 0001722964 8-K 2024-03-08 Y-MABS THERAPEUTICS, INC. DE 001-38650 47-4619612 230 Park Avenue Suite 3350 New York NY 10169 646 885-8505 false false false false Common Stock, $0.0001 par value YMAB NASDAQ false