(US) Surface Oncology, Inc. operates as a clinical-stage immuno-oncology company. It focuses on biological pathways critical to the immunosuppressive tumor microenvironment and the development of next-generation cancer therapies. The firm’s pipeline includes two wholly-owned lead programs targeting CD39 (SRF617) and IL-27 (SRF388); a clinical-stage collaboration with Novartis targeting CD73 (NZV930); and two preclinical programs, each focused primarily on activating natural killer or depleting regulatory T cells. The company was founded by David S. Grayzel in 2014 and is headquartered in Cambridge, MA.