Portola Pharmaceuticals, Inc. Appoints Dennis Fenton to the Board as Class II Director and Member of the Compensation Committee of the Board

Effective February 5, 2015, the board of directors of Portola Pharmaceuticals, Inc. appointed Dennis Fenton, Ph.D. to the board as a Class II director and a member of the compensation committee of the board, to serve until the company's 2015 annual meeting of stockholders.