Sina Corp is a Chinese technology company founded in 1998 that operates four major services: Sina Weibo, Sina Mobile, Sina Online, and Sinanet. Sina is known for its Twitter-like microblog social network, Weibo, which has 56.5 percent of the Chinese microblogging market based on active users and 86.6 percent based on browsing time over Chinese competitors such as Tencent and Baidu. The company was founded in Beijing, and its global financial headquarters have been based in Shanghai since October 1, 2001.
Charles Chao has served as our Chairman of the Board since August 2012 and our Chief Executive Officer since May 2006. He served as our President from September 2005 to February 2013, Chief Financial Officer from February 2001 to May 2006, Co-Chief Operating Officer from July 2004 to September 2005, and Executive Vice President from April 2002 to June 2003. From September 1999 to January 2001, Mr. Chao served as our Vice President, Finance. Prior to joining us, Mr. Chao served as an audit manager at PricewaterhouseCoopers, LLP, an accounting firm. Prior to that, Mr. Chao was a news correspondent at Shanghai Media Group. Mr. Chao is currently the Chairman of Weibo Corporation, a leading social media company, a director of NetDragon Websoft Inc., a company providing technology for online gaming and a director of Leju Holdings Ltd., an online-to-offline (O2O) real estate services provider in China. Mr. Chao holds a Master of Professional Accounting degree from University of Texas at Austin, an M.A. in Journalism from University of Oklahoma and a B.A. in Journalism from Fudan University in Shanghai, China.