Portola Pharmaceuticals, Inc. Follow-On Offering

Davis Polk advised the joint book-running managers and the lead manager in connection with a $258.8 million public offering of common stock by Portola Pharmaceuticals, Inc. The common stock is listed on The Nasdaq Global Select Market under the symbol “PTLA.”

Based in South San Francisco, California, Portola Pharmaceuticals is a global, commercial-stage biopharmaceutical company focused on the discovery, development and commercialization of novel therapeutics that could significantly advance the fields of thrombosis and other hematologic diseases.

The Davis Polk corporate team included partners Bruce K. Dallas and Emily Roberts and associates Dongbiao Shen and Daniel Fox. Partner Rachel D. Kleinberg and associate Tomislava Dragicevic provided tax advice. Associates Michael V. Policastro and Jennifer Leather provided intellectual property and technology advice. Members of the Davis Polk team are based in the Northern California and New York offices.