0001789972 2022-02-28 2022-02-28 false 0001789972 8-K 2022-02-28 CULLINAN ONCOLOGY, INC. DE 001-39856 81-3879991 Cullinan Oncology, Inc. One Main Street Suite 520 Cambridge MA MA 02142 (617) 410-4650 false false false false Common Stock, $0.0001 par value per share CGEM NASDAQ true false