Ms. Yi Zhang, also known as Bonnie, has been the Chief Financial Officer of SINA Corporation since March 10, 2015. Ms. Zhang served as the Chief Financial Officer of Weibo Corporation since March 2014. Prior to Weibo, Ms. Zhang served as the Chief Financial Officer of AdChina, Ltd. since May 2011 until February 2014 and served as its Principal Accounting Officer. From October 2007 to April 2011, she was an Audit Partner of Deloitte Touche Tohmatsu based in Shanghai, China 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, Ms. Zhang served as a Senior Manager of Deloitte & Touche, LLP's National Office SEC Services group. 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. She is a certified public accountant in the State of Maryland and is a member of the American Institution of Certified Public Accountants. Ms. Zhang graduated summa cum laude in 1997 in Business Administration from McDaniel College in Maryland.