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Bonnie Yi Zhang has served as our Chief Financial Officer since March 2015. Prior to joining us, Ms. Zhang has served as Chief Financial Officer of Weibo Corporation, a subsidiary of us since March 2014. From May 2011 to February 2014, Ms. Zhang was the Chief Financial Officer of AdChina Ltd., a company operating an integrated internet advertising platform in China. From October 2007 to April 2011, Ms. Zhang was an audit partner of Deloitte Touche Tohmatsu based in Shanghai, with a focus on serving Chinese companies listed in the United States and Chinese companies making initial public offerings in the United States. From May 2005 to August 2007, she served as a senior manager in the National Office SEC Services group of Deloitte & Touche, LLP. While she was with that group, Ms. Zhang was primarily responsible for pre-issuance reviews of securities offering documents and periodic reports to be filed with the SEC and was primarily focusing on foreign private issuers. Ms. Zhang graduated summa cum laude in 1997 with a B.A. in Business Administration from McDaniel College in Maryland. She is a certified public accountant in the State of Maryland and is a member of the American Institution of Certified Public Accountants.