Hillstream BioPharma, Inc., a pre-clinical biotechnology company, develops novel therapeutic candidates targeting ferroptosis, an anti-cancer mechanism resulting in iron mediated cell death (IMCD) and targeted immuno-oncology novel biologics for the treatment drug resistant cancers. The company's product candidate is HSB-1216, an IMCD inducer targeting solid tumors. It also develops HSB-3215, an anti-HER2 monoclonal antibody candidate; and HSB-1940, a Quatrabody that is a proprietary IO biologic in development targeting PD-1. The company was incorporated in 2017 and is based in Bridgewater, New Jersey.