0001722964 2024-09-11 2024-09-11 0001722964 false 8-K 2024-09-11 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