Pappas Capital Announces the Passing of…

NOVATO, CA – December 20, 2012 - Ultragenyx Pharmaceutical Inc., a biotechnology company focused on the development of treatments for rare and ultra-rare genetic disorders, today announced the successful completion of a $75 million Series B round financing led by Adage Capital Partners, LP.  Joining Adage as new investors in this financing are mutual funds and separate account clients advised by T. Rowe Price Associates, Inc., Jennison Associates LLC (on behalf of clients), funds and accounts under management by subsidiaries of BlackRock, Inc., Sanofi-Genzyme BioVentures 1, Shire plc and additional blue chip public market funds.  Existing investors, TPG Biotech, Fidelity Biosciences, HealthCap and Pappas Ventures also participated in the transaction.