Protagonist Therapeutics, Inc. a clinical-stage biopharmaceutical company, which engages in discovering and developing peptide-based therapeutic drugs to address unmet medical needs. The company is headquartered in Newark California, California and currently employs 130 full-time employees. The company went IPO on 2016-08-11. The Company’s clinical programs fall into two categories of diseases: hematology and blood disorders, and inflammatory and immunomodulatory diseases. Its two peptides derived from its proprietary discovery technology platform, rusfertide and icotrokinra, are in advanced Phase III clinical development. Its rusfertide (PTG-300) is an injectable hepcidin mimetic in development for the potential treatment of polycythemia vera (PV) and other blood disorders. Icotrokinra, an orally delivered IL-23R specific antagonist for the potential treatment of psoriasis, psoriatic arthritis (PsA), ulcerative colitis and inflammatory bowel disease (IBD) indications. The firm also has a pre-clinical stage oral drug discovery program addressing clinically and commercially validated targets, including the IL-17 oral peptide antagonist PN-881, an oral hepcidin program, and an oral obesity program.