[SINA Reports Fourth Quarter and Fiscal Year 2010 Financial Results SHANGHAI, China—March 1, 2011— Starting in the fourth quarter of 2009, in addition to the disclosure of GAAP results below, SINA’s historical revenues and certain non-GAAP measures (namely, gross profit, operating expenses, income from operations and advertising gross margin) have been revised to exclude results from China Online Housing Technology] [FORM 6-K SINA Corporation 37F, Jin Mao Tower þ o Form 20-F o o TABLE OF CONTENTS Press Release regarding Results of Operations and Financial Condition for the Fourth Quarter and Fiscal Year Ended December 31, 2010, issued by SINA Corporation on March 1, 2011 EX-99.1 SINA CORPORATION Herman Yu Chief Financial Officer 6-K 1 f58566e6vk.htm FORM 6-K]