 HOUSTON, March 11, 2021 PRNewswire -- Marker Therapeutics, Inc. Nasdaq: MRKR, a clinical-stage immuno-oncology company specializing in the development of next-generation T cell-based immunotherapies for the treatment of hematological malignancies and solid tumor indications, today announced that it has commenced an underwritten public offering of shares of its common stock. In addition, Marker expects to grant the underwriters a 30-day option to purchase additional shares of its common stock. 