Eiger BioPharmaceuticals Appoints Paul Truex to Board of Directors

PALO ALTO, California -

- Industry Veteran with Business Development and Transactional Expertise Joins Eiger Board of Directors

Eiger BioPharmaceuticals, Inc., a biotechnology company developing antiviral therapies with a focus on the NS4B Hepatitis C Virus (HCV) protein, announced today the appointment of Paul Truex to its Board of Directors.

Truex is the founder, President and CEO of Anthera Pharmaceuticals - a private pharmaceutical company focused on the development of anti-inflammatory products for life threatening cardiovascular and pulmonary diseases. Previously he was Founder, President and CEO of Peninsula Pharmaceuticals where he negotiated both of Peninsula’s anti-infective product agreements with Shionogi & Co. Ltd. and Takeda Chemical Industries respectively. Peninsula was acquired by Johnson & Johnson in 2005 for US$245 million. Previously, Mr. Truex held positions at Versicor (Vicuron), which was acquired by Pfizer for US$1.9 billion, and at Eli Lilly. Mr. Truex obtained his M.B.A. in Marketing and Finance from Indiana University and a B.A. Degree in International Economics from the University of Waterloo.

“We are delighted to have Mr. Truex join Eiger’s Board as an Independent Director,” said David Cory, President and CEO of Eiger. “Paul will bring valuable experience to our corporate strategy and development as we advance both preclinical and clinical programs at Eiger.”

“The combination of newly discovered HCV targets along with clinical and preclinical small molecule inhibitors already identified by Eiger make this a very exciting opportunity in the infectious disease space,” said Paul Truex. “I’m looking forward to working with the Eiger board and management team to build a successful company.”

Eiger BioPharmaceuticals recently announced the acquisition of exclusive license to novel HCV technology discovered in the labs of Stanford scientist and Eiger Founder Dr. Jeffrey Glenn, MD, PhD. This technology targets a specific region found in the HCV protein NS4B, which binds to HCV-RNA and is required for virus replication. Disrupting the function of this protein provides for a new method to treat HCV infection and can help combat drug resistance to HCV polymerase and protease inhibitors.

About Eiger BioPharmaceuticals, Inc. www.eigerbio.com

Eiger is focused on the discovery and development of new antiviral agents against novel targets for the treatment of hepatitis virus infection. Eiger’s pipeline includes repurposed clinical stage therapeutic agents as well as NCEs from discovery that exhibit antiviral activity against Hepatitis C, Hepatitis D, and other viruses. Eiger investors include InterWest Partners www.interwest.com and Vivo Ventures www.vivoventures.com.

Contact: +1-650-320-9900 info@eigerbio.com

Source: Eiger BioPharmaceuticals, Inc.

Eiger BioPharmaceuticals, +1-650-320-9900, info at eigerbio.com