Brandi L. Roberts

Brandi L. Roberts, CPA, MBA, joined Mast Therapeutics, Inc., in March 2011, and currently serves as Chief Financial Officer and Senior Vice President. She previously served as Vice President, Finance from March 2011 to January 2013 and from June 2008 to January 2009. From January 2009 to March 2011, Ms. Roberts served as Vice President, Accounting and Corporate Controller of Alphatec Spine, Inc., the wholly owned operating subsidiary of Alphatec Holdings, Inc., a medical technology company listed on the Nasdaq Global Select Market, where she was responsible for managing all accounting activities, including SEC reporting and compliance with Sarbanes-Oxley Act requirements. From June 2007 to June 2008, Ms. Roberts served as Executive Director, Corporate Controller of Artes Medical, Inc., a publicly traded medical technology company, and from September 2005 to June 2007, she served as Director, Finance of Stratagene Corporation, a publicly traded life science company acquired by Agilent Technologies, Inc., in June 2007. Ms. Roberts’ experience also includes seven years at Pfizer’s laboratories in La Jolla, California — formerly Agouron — most recently as Director, Finance, and three years with the public accounting firm of PricewaterhouseCoopers LLP. She is a certified public accountant with the state of California. Ms. Roberts received a B.S. in business administration from the University of Arizona and an MBA from the University of San Diego.