Humanigen, Inc. is a clinical-stage biopharmaceutical company. The Company is engaged in developing its portfolio of proprietary Humaneered anti-inflammatory immunology and immuno-oncology monoclonal antibodies. Its Humaneered technology platform is a method for converting existing antibodies (typically murine) into engineered, high-affinity human antibodies designed for therapeutic use, particularly with acute and chronic conditions. Its product candidate, lenzilumab, and its other product candidate, ifabotuzumab (iFab), are Humaneered monoclonal antibodies are Humaneered monoclonal antibodies. lenzilumab is used as a therapeutic for chronic myelomonocytic leukemia; for the prevention of acute graft versus host disease; and as a prophylactic companion for certain chimeric antigen receptor therapy (CAR-T) programs. The Company has developed or in-licensed targets or research antibodies, typically from academic institutions, and then applied its Humaneered technology to optimize them.