Agenus to Present at two Upcoming Healthcare Conferences Upcoming Healthcare Conferences

Agenus Inc. (Nasdaq: AGEN), a developer of therapeutic vaccines for cancer and infectious diseases, today announced that the company will present a corporate overview at two upcoming conferences. Dr. Garo Armen, chairman and CEO of Agenus, will present at the 15th Annual Rodman & Renshaw Healthcare Conference on September 10, 2013 at 10:25 am Eastern time at the Millennium Broadway Hotel in New York City, NY. Dr. Armen will also present at the Stifel Healthcare Conference 2013 at 10:20 am Eastern time on September 11, 2013 at the Four Seasons Hotel in Boston, MA.

Web Cast Information

The live and archived webcast of the company presentation will be accessible from the company’s website atwww.agenusbio.com/webcast. Please log in approximately 5-10 minutes before each event to ensure a timely connection. The archived replay will be available on the Agenus website for one month following the conference.

About Agenus

Agenus Inc. is a biotechnology company working to develop treatments for cancers and infectious diseases. The company is focused on immunotherapeutic products based on strong platform technologies with multiple product candidates advancing through the clinic, including several product candidates that have advanced into late-stage clinical trials through corporate partners. For more information, please visit www.agenusbio.com.