Horizon Quantum Computing to Establish First-of-a-Kind…

$17.0 Million Awarded in Latest Contract Extension

DURHAM, N.C., Sept. 2, 2014 – Chimerix, Inc. (Nasdaq:CMRX), a biopharmaceutical company developing novel, oral antivirals, today announced an award of $17.0 million through the extension of its contract with the Biomedical Advanced Research and Development Authority (BARDA) for the development of its broad spectrum antiviral brincidofovir (BCV, CMX001) as a medical countermeasure to treat smallpox. Chimerix received the initial award in February 2011 which supported early research and development of brincidofovir in animal models of smallpox (Contract Number HHSO100201100013C). This contract extension provides an additional $17.0 million to Chimerix for a period of 15 months, and will support Phase 3 trials expected to initiate in the second half of 2014.