Eiger BioPharmaceuticals, Inc. is a commercial-stage biopharmaceutical company. The Company is focused on the development of therapies to treat and cure Hepatitis Delta Virus (HDV), the severe form of viral hepatitis, and other serious diseases. Its clinical product candidates include Lonafarnib (LNF) for HDV, Peginterferon Lambda (lambda) for HDV and Covid-19, Avexitide in Post-Bariatric Hypoglycemia (PBH) and Avexitide in Congenital Hyperinsulinism (CHI). Lambda is a late-stage, type III, interferon (IFN), that stimulates immune responses that are critical for the development of host protection during viral infections. Avexitide is a peptide, which is developing as a treatment for congenital hyperinsulinism (HI). It is also developing lambda as an out-patient treatment for patients with mild and moderate COVID-19. The Company is also developing Avexitide as a treatment for post-bariatric hypoglycemia (PBH).