##### Table of Contents



UNITED STATES SECURITIES AND EXCHANGE COMMISSION Washington, D.C. 20549
    Form 10-K/A    þ ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE
SECURITIES EXCHANGE ACT OF 1934 For the Fiscal Year Ended December 31, 2004
OR [ ] TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIESEXCHANGE ACT OF 1934
 Commission File Number 000-30698 SINA CORPORATION (Exact Name of Registrant as specified in its charter)
 Cayman Islands(State or other jurisdiction of
Incorporation or organization)
    
    52-2236363(I.R.S. Employer Identification Number)
 Room 1802, United Plaza
1468 Nan Jing Road West
Shanghai 200040, China
(86-21) 6289 5678(Address, including zip code, and telephone number, including area code, of Registrants principal executive offices) Securities registered pursuant to Section 12(b) of the Act:
None Securities registered pursuant to Section 12(g) of the Act:
Ordinary Shares, $0.133 par value per share
Ordinary Share Purchase Rights Indicate by check mark whether the registrant (1) has filed all reports required to be filed
by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or
for such shorter period that the registrant was required to file such reports), and (2) has been
subject to such filing requirements for the past 90 days. Yes þ No o Indicate by check mark if disclosure of delinquent filers pursuant to Item 405 of Regulation
S-K is not contained herein, and will not be contained, to the best of Registrants knowledge, in
definitive proxy or information statements incorporated by reference in Part III of this Form 10-K
or any amendment to this Form 10-K. o Indicate by check mark whether the registrant is an accelerated filer. Yes þ No o The aggregate market value of the voting stock held by non-affiliates of the registrant
was approximately $1,328,900,937 as of June 30, 2004, based upon the closing sale price for our
ordinary shares as quoted by the Nasdaq National Stock Market reported for such date. Ordinary
shares held by each officer and director and by each person known to the registrant (based on
information provided by such persons and/or the most recent schedule 13Gs as filed by such
persons) to beneficially own 5% or more of the outstanding ordinary shares have been excluded
because such persons may be deemed to be affiliates. This determination of affiliate status is not
necessarily a conclusive determination for other purposes. As of March 31, 2005, there were 51,531,335 shares of the registrants ordinary shares
outstanding, $0.133 par value per share.




---



SINA CORPORATION INDEX EXPLANATORY NOTEPART III.Item 10.
    
    Directors and Executive Officers of the Registrant
    
    
    3Item 11.
    
    Executive Compensation
    
    
    5Item 12.
    
    Security Ownership of Certain Beneficial Owners and Management and Related Stockholder Matters
    
    
    12Item 13.
    
    Certain Relationships and Related Transactions
    
    
    15Item 14.
    
    Principal Accountant Fees and Services
    
    
    15PART IV.Item 15.
    
    Exhibits and Financial Statement Schedules
    
    
    16SIGNATURES
    
    
    16EXHIBIT INDEX
    
    
    18EXHIBIT 31.1EXHIBIT 31.2EXHIBIT 32.1EXHIBIT 32.2
  2




---



##### Table of Contents



EXPLANATORY NOTE This Amendment No. 1 to the registrants annual report on Form 10-K for the fiscal year ended
December 31, 2004 is being filed in order to submit the information required to be included in Part
III thereof within the time period required by General Instruction G(3) to Form 10-K and to file
certain exhibits. As used in this Amendment No. 1 to annual report on Form 10-K, unless the context otherwise
requires, the following terms shall have the meanings set forth below:  
    We, us, our, SINA and the Company refer to SINA Corporation
    Board of Directors or Board means our Board of Directors
    SEC means the Securities and Exchange Commission 
 PART III 
 Item 10.Directors and Executive Officers of the Registrant Our Articles of Association currently authorize a Board of not less than two directors and the
classification of the Board into three classes serving staggered terms. At each annual general
meeting, the terms of one class of directors will expire. The directors whose terms expire each
year will be those who have been in office the longest since their last election. A director whose
term is expiring will remain in office until the close of the meeting at which his or her term
expires, and will be eligible for re-election at that meeting. The Company currently has nine
directors. In accordance with our Articles of Association, the Board of Directors has fixed the
number of directors constituting the Board at nine. The Class III Directors whose terms expire at our next annual meeting are Pehong Chen, Lip-Bu
Tan and Yichen Zhang. The Class I directors whose terms expire at our 2006 Annual Meeting are
Xiaotao Chen, Yongji Duan and Yan Wang. The Class II directors whose terms expire at our 2007
Annual Meeting are Daniel Chiang, Ter Fung Tsao and Song-Yi Zhang. The following table provides information with respect to our executive officers and directors
as of March 31, 2005: Name
    
    Age
    
    PositionYan Wang
    
    
    32
    
    
    Chief Executive Officer and DirectorDaniel Chiang
    
    
    47
    
    
    Co-Chairman of the BoardYongji Duan
    
    
    58
    
    
    Co-Chairman of the BoardCharles Chao
    
    
    39
    
    
    Co-Chief Operating Officer & Chief Financial OfficerHurst Lin
    
    
    40
    
    
    Co-Chief Operating OfficerBenjamin Tsiang
    
    
    35
    
    
    Executive Vice President of Product Development &
General Manager of SINA OnlinePehong Chen
    
    
    47
    
    
    DirectorLip-Bu Tan
    
    
    45
    
    
    DirectorTer Fung Tsao
    
    
    59
    
    
    DirectorYichen Zhang
    
    
    41
    
    
    DirectorXiaotao Chen
    
    
    47
    
    
    DirectorSong-Yi Zhang
    
    
    48
    
    
    Director
 Yan Wanghas served as our Chief Executive Officer and director since May 2003. Previously, he
served as our President from June 2001 to May 2003, our General Manager of China Operations from
September 1999 to May 2001 and as our Executive Deputy General Manager for Production and Business
Development in China from April 1999 to August 1999. In April 1996, Mr. Wang founded the SRSnet.com
division of Beijing Stone Rich Sight Limited (currently known as Beijing SINA Information
Technology Co. Ltd), one of our subsidiaries. From April 1996 to April 1999, Mr. Wang served as the
head of our SRS Internet Group. Mr. Wang holds a B.A. in Law from the University of Paris. Daniel Chianghas served as a director since March 1999 and is currently serving as our
Co-Chairman of the Board. He served as the President and Chief Executive Officer of Sinanet.com, an
Internet content and services company, from June 1996 until we acquired it in March 1999. Prior to
joining Sinanet.com in June 1996, Mr. Chiang was the President of Trend Micro, Inc., an Internet
virus protection and content security company, from December 1993 to May 1996. Mr. Chiang 3




---



##### Table of Contents



received an M.A. in Political Economy from University of Texas, Dallas and a B.A. in Diplomacy
from National Cheng-Chi University in Taiwan. Charles Chaohas served as our Chief Financial Officer since February 2001 and Co-Chief
Operating Officer since July 2004. Mr. Chao served as our 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 experienced audit manager at PricewaterhouseCoopers,
LLP, an accounting firm. 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. Hurst Linco-founded and served as the Vice President of Business Development of Sinanet.com
from May 1995 until we acquired it in March 1999. From March 1999 to April 2002, Mr. Lin served as
our Vice President of Business Development. Mr. Lin served as our General Manager of U.S.
Operations from September 1999 until February 2003 and Executive Vice President of Global Business
Development from April 2002 to June 2003. He served as our Chief Operating Officer from June 2003
to July 2004 and since then has served as our Co-Chief Operating Officer. Mr. Lin holds an M.B.A.
from Stanford University and a B.A. in Engineering from Dartmouth College. Benjamin Tsiangco-founded and served as the Vice President of Production and Design Chief of
Sinanet.com until we acquired it in March 1999. From March 1999 to November 2003, Mr. Tsiang
served as our Vice President of Production. Mr. Tsiang also served as our General Manager of
Taiwan Operations from March 2000 to April 2002 and our General Manager of East China from May 2002
to November 2003. He has served as our Executive Vice President of Product Development and General
Manager of SINA Online since December 2003. Mr. Tsiang holds an M.S. in Mechanical Engineering
from Stanford University and a B.S. in Mechanical Engineering from National Taiwan University. Pehong Chenhas served as a director since March 1999. Mr. Chen has been the Chief Executive
Officer, President and Chairman of the Board of Broadvision, Inc., a software applications company,
since May 1993. Prior to founding Broadvision, Mr. Chen was Vice President of MultiMedia Technology
at Sybase, Inc., an enterprise software company, from 1992 to 1993. From 1989 to 1992, Mr. Chen
founded and was president of Gain Technology, a multimedia software tools company, which was
acquired by Sybase. He received a B.S. in Computer Science from National Taiwan University, an M.S.
in Computer Science from Indiana University and a Ph.D. in Computer Science from the University of
California at Berkeley. Yongji Duanhas served as a director since August 1997 and is currently serving as our
Co-Chairman of the Board. Mr. Duan also served as a director for Rich Sight Investment Limited, one
of our subsidiaries, from May 1993 through May 1999. Mr. Duan has served as a Director of Stone
Group Corporation, a holding company, since February 1991 and is now the Chairman of Stone Group
Corporation. Mr. Duan had also served as President and Chief Executive Officer of Stone Electronic
Technology Limited, a diversified electronics and consumer products company, since 1990 until he
began to serve as the Chairman of the Company in May 2002. Since September 2001, Mr. Duan has
served as a director of Sun Media Group Holdings Limited, a holding company. Mr. Duan holds an M.S.
in Aeronautics Materials from Beijing Aeronautic College and a B.S. from Qinghua University. Lip-Bu Tanhas served as a director since March 1999. Mr. Tan is the Founder and Chairman of
Walden International, an international venture capital firm founded in 1984. Mr. Tan is currently a
director of Creative Technology Ltd., a multimedia technology company, Centillium Communications,
Inc., a semiconductor company, Flextronics International Ltd., an electronics manufacturing
services company, Integrated Silicon Solutions, Inc., a semiconductor company, Cadence Design
Systems Inc., an EDA company, and several other private companies. He holds an M.S. in Nuclear
Engineering from the Massachusetts Institute of Technology, an M.B.A. from the University of San
Francisco and a B.S. from Nanyang University, Singapore. Ter Fung Tsaohas served as a director since March 1999. Mr. Tsao has served as Chairman of
Standard Foods Corporation (formerly known as Standard Foods Taiwan Ltd.), a packaged food company,
since 1986. Before joining Standard Foods Taiwan Ltd., Mr. Tsao worked in several positions within
The Quaker Oats Company, a packaged food company, in the United States and Taiwan. Mr. Tsao
received a B.S. in Civil Engineering from Cheng Kung University in Taiwan, an M.S. in Sanitary
Engineering from Colorado State University, and a Ph.D. in Food and Chemical Engineering from
Colorado State University. 4




---



##### Table of Contents



Yichen Zhanghas served as a director since May 2002. Since August 2003, Mr. Zhang has been
the Chief Executive Officer of CITIC Capital Markets Holdings Ltd (CCMH), an investment banking
firm. Mr. Zhang served as the Deputy Chief Executive Officer of CCMH from June 2002 to July 2003,
and served as Executive Director of CITIC Pacific Ltd. from March 2000 to May 2002. From September
1996 to February 2000, he served as Managing Director-Debt Capital Markets for Merrill Lynch (Asia
Pacific), Ltd., another investment banking firm. Mr. Zhang holds a B.S. in Computer Science and
Engineering from the Massachusetts Institute of Technology. Xiaotao
Chenhas served as a director since April 2004. Since January
2005, Mr. Chen has been the Chief Executive Officer and
Executive Director of Sun Media Investment Holdings Limited.
Mr. Chen also has served as Executive Director of Stone Group
Holdings Limited, a Hong-Kong listed Company, since May 2001 and its
President from May 2001 to December 2004. Prior to joining Stone Group
Holdings Limited, he was the Vice President of Stone Group
Corporation since January 1998. Song-Yi
Zhanghas served as a director since April 2004.
Mr. Zhang has been an Advisory Director of Morgan Stanley based in Hong Kong since
December 2000. From November 1997 to November 2000, Song-Yi was a Managing Director of Morgan
Stanley and served separately as a Managing Director in its Asia Mergers, Acquisitions,
Restructuring and Divestiture Group and Co-head of its Asia Utilities/ Infrastructure Group. There are no family relationships among any of the directors or executive officers of SINA
Corporation. Audit Committee Financial Expert The Board has determined that Lip-Bu Tan qualifies as an audit committee financial expert as
defined by the rules of the Securities and Exchange Commission and has designated Lip-Bu Tan to
serve as the audit committee financial expert for the Company. Lip-Bu Tan is independent as such
term is used in Item 7(d)(3)(iv) of Schedule 14A under the Exchange Act. Lip-Bu Tan also serves on
the audit committees of Centillium Communications, Inc. and Integrated Silicon Solutions, Inc. and
is one of the designated audit committee financial experts for Integrated Silicon Solutions, Inc. Audit Committee The Company has a separately designated standing Audit Committee established in accordance
with Section 3(a)(58)(A) of the Exchange Act. The current members of the Audit Committee are Lip-Bu
Tan, Ter Fung Tsao and Yichen Zhang. Section 16(a) Beneficial Ownership Reporting Compliance Section 16(a) of the Exchange Act requires the Companys directors, executive officers and
persons who own more than 10% of the Companys ordinary shares (collectively, Reporting Persons)
to file with the SEC initial reports of ownership and changes in ownership of the Companys
ordinary shares. Reporting Persons are required by SEC regulations to furnish the Company with
copies of all Section 16(a) reports they file. To the Companys knowledge, based solely on its
review of the copies of such reports received or written representations from certain Reporting
Persons that no other reports were required, the Company believes that during the year that ended
December 31, 2004 all Reporting Persons complied with all applicable filing requirements, except
that (i) Xiaotao Chen filed his Form 3 late, (ii) Daniel Chiang didnt file a Form 4 for certain
gift transactions which took place on December 8, 2004 and were reported in a From 5 filed on
February 14, 2005, and (iii) Song-Yi Zhang filed his Form 3 late. Code of Ethics The Company has adopted the Code of Ethics which applies to the Companys directors, officers
and employees, including the Companys principal executive officer, principal financial officer and
principal accounting officer. This Code of Ethics is posted on our corporate website at
corp.sina.com. If any substantive amendments are made to the Code of Ethics or the Board of
Directors grants any waiver, including any implicit waiver, from a provision of the code to any of
the directors or officers of the Company, the Company will disclose the nature of such amendment or
waiver in a report on Form 8-K. 
 Item 11.Executive Compensation COMPENSATION OF EXECUTIVE OFFICERS 5




---



##### Table of Contents



The following table shows the compensation earned by (a) the individual who served as the
Companys Chief Executive Officer during the fiscal year ended December 31, 2004 and (b) the four
other most highly compensated individuals who served as an executive officer of the Company during
the fiscal year ended December 31, 2004 (collectively the Named Executive Officers). Information
is also provided for the fiscal year ended December 31, 2003 and the calendar year ended December
31, 2002. Summary Compensation Table Long-TermCompensationAnnual Compensation
    
    
    AwardsOther
    
    
    SecuritiesAnnual
    
    
    Underlying
    
    
    All OtherName and Principal Position
    
    Fiscal Year
    
    
    Salary($)
    
    
    Bonus($)
    
    
    Compensation($)
    
    
    Options
    
    
    CompensationYan Wang
    
    
    2004
    
    
    
    177,494
    
    
    
    128,140
    
    
    
    
    
    
    
    200,000
    
    
    
    36,000
    (2)Chief Executive Officer &
    
    
    2003
    
    
    
    144,980
    
    
    
    28,966
    
    
    
    
    
    
    
    
    
    
    
    6,133
    (2)Director
    
    
    2002
    (1)
    
    
    144,980
    
    
    
    23,196
    
    
    
    
    
    
    
    240,000
    
    
    
    8,481
    (2)Charles Chao
    
    
    2004
    
    
    
    190,000
    
    
    
    190,361
    
    
    
    
    
    
    
    50,000
    
    
    
    30,000
    (4)Chief Financial Officer &
    
    
    2003
    
    
    
    190,000
    
    
    
    76,000
    
    
    
    
    
    
    
    100,000
    
    
    
    30,000
    (4)Co-Chief Operating Officer
    
    
    2002
    (1)
    
    
    190,000
    
    
    
    60,800
    
    
    
    23,486
    (3)
    
    
    180,000
    
    
    
    27,500
    (4)Hurst Lin
    
    
    2004
    
    
    
    175,000
    
    
    
    183,227
    
    
    
    
    
    
    
    50,000
    
    
    
    39,000
    (5)Co-Chief Operating Officer
    
    
    2003
    
    
    
    175,000
    
    
    
    61,252
    
    
    
    
    
    
    
    100,000
    
    
    
    2002
    (1)
    
    
    175,000
    
    
    
    47,394
    
    
    
    
    
    
    
    180,000
    
    
    
    Li-Cheng Chang (6)
    
    
    2004
    
    
    
    120,000
    
    
    
    48,650
    
    
    
    
    
    
    
    
    
    
    
    24,000
    (7)Former EVP &
    
    
    2003
    
    
    
    120,000
    
    
    
    41,125
    
    
    
    
    
    
    
    80,000
    
    
    
    Chief Marketing Officer
    
    
    2002
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Benjamin Tsiang (8)
    
    
    2004
    
    
    
    110,000
    
    
    
    36,878
    
    
    
    
    
    
    
    30,000
    
    
    
    24,000
    (9)EVP, Product Development
    
    
    2003
    
    
    
    110,000
    
    
    
    33,000
    
    
    
    
    
    
    
    40,000
    
    
    
    & GM of SINA Online
    
    
    2002
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
   (1)
    
    The information for 2002 is provided for calendar 2002, the twelve-month period ending
December 31, 2002. Due to the fiscal year change effected for 2002, we are providing
information for this period instead of for fiscal year ended June 30, 2002. Information for
fiscal 2002 can be found in our 2002 Proxy Statement.(2)
    
    Mr. Wang received these amounts as a housing allowance.(3)
    
    Mr. Chao received this amount as a tax reimbursement payment.(4)
    
    Mr. Chao received these amounts as a housing allowance.(5)
    
    Mr. Lin received $30,000 as a housing allowance and 9,000 as an education allowance for his
child.(6)
    
    Mr. Chang became an executive officer in June 2003 and resigned on December 31, 2004.(7)
    
    Mr. Chang received this amount as a housing allowance.(8)
    
    Mr. Tsiang became an executive officer in December 2003.(9)
    
    Mr. Tsiang received this amount as a housing allowance. OPTION GRANTS IN LAST FISCAL YEAR The following table sets forth certain information for the twelve-month period ended December
31, 2004 with respect to grants of stock options to each of the Named Executive Officers. No stock
appreciation rights were granted to the Named Executive Officers during 2004. Except for the
options granted under our 1999 Directors Stock Option Plan to our Directors, all options granted
by us during 2004 were granted under our 1999 Stock Plan and 1999 Executive Stock Option Plan. We 6




---



##### Table of Contents



granted to employees options to purchase ordinary shares equal to a total of 1,479,300 shares
during 2004. Options were granted at an exercise price equal to the fair market value of our
ordinary shares. These options have a term of 10 years, but are subject to earlier termination in connection
with termination of employment. Optionees may pay the exercise price by cash, check, or delivery of
already-owned ordinary shares in the capital of the Company. Options granted to the Named Executive
Officers vest over a four-year term with 12.5% of the options vesting on the sixth month
anniversary of the date of the grant and the remaining options vesting ratably on a monthly basis
over the remaining terms of the options. For a discussion of treatment of certain options in the
event of a change in control transaction, see the discussion under Change of Control Agreements
below. Potential realizable values are net of exercise price before taxes, and are based on the
assumption that our ordinary shares appreciate at the annual rate shown, compounded annually, from
the date of grant until the expiration of the 10-year term. These numbers are calculated based on
SEC requirements and do not reflect our projection or estimate of future stock price growth. Actual
gains, if any, on stock option exercises will be dependent on the future performance of our
ordinary shares. Unless the market price of the ordinary shares appreciates over the option term,
no value will be realized from the option grants made to executive officers. Individual Grants
    
    
    Potential Realizable ValueNumber of
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    at Assumed Annual RatesSecurities
    
    
    Percent of Total
    
    
    
    
    
    
    
    
    
    of Stock PriceUnderlying
    
    
    Options Granted
    
    
    Exercise
    
    
    
    
    
    
    AppreciationOptions
    
    
    to Employees in
    
    
    Price
    
    
    Expiration
    
    
    for Option TermName
    
    Granted(#)
    
    
    Fiscal Year (%)
    
    
    ($/sh)
    
    
    Date
    
    
    5%($)
    
    
    10%($)Yan Wang
    
    
    200,000
    
    
    
    13.52
    
    
    
    24.23
    
    
    
    7/27/14
    
    
    
    3,047,623
    
    
    
    7,723,276Chief Executive Officer &
DirectorCharles Chao
    
    
    50,000
    
    
    
    3.38
    
    
    
    24.23
    
    
    
    7/27/14
    
    
    
    761,906
    
    
    
    1,930,819Chief Financial Officer &
Co-Chief Operating
OfficerHurst Lin
    
    
    50,000
    
    
    
    3.38
    
    
    
    24.23
    
    
    
    7/27/14
    
    
    
    761,906
    
    
    
    1,930,819Co-Chief Operating
OfficerLi-Cheng Chang
    
    

    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    Former EVP &
Chief Marketing OfficerBenjamin Tsiang
    
    
    30,000
    
    
    
    2.03
    
    
    
    24.23
    
    
    
    7/27/14
    
    
    
    457,144
    
    
    
    1,158,491EVP, Product Development
& GM of SINA Online
 7




---



##### Table of Contents



AGGREGATED OPTION EXERCISES IN LAST FISCAL YEAR
AND FISCAL YEAR-END OPTION VALUES The following table provides certain information with respect to stock options exercised by
the Named Executive Officers during the twelve-month period that ended on December 31, 2004. The
table also provides the number of shares covered by stock options as of December 31, 2004, and the
value of in-the-money stock options, which represents the positive difference between the
exercise price of a stock option and the market price of the shares subject to such option on
December 31, 2004. No stock appreciation rights were outstanding during the last year. Value ofNumber of
    
    
    UnexercisedSecurities Underlying
    
    
    In-the-MoneyShares
    
    
    
    
    
    
    Unexercised Options
    
    
    Options atAcquired on
    
    
    Value
    
    
    at Year End(#)
    
    
    Year End($)Name
    
    Exercise(#)
    
    
    Realized($)
    
    
    Exercisable/Unexercisable
    
    
    Exercisable/Unexercisable(1)Yan Wang
    
    
    204,000
    
    
    
    6,661,087
    
    
    
    45,041/321,549
    
    
    
    1,177,145/5,240,416Chief Executive Officer &
DirectorCharles Chao
    
    
    205,000
    
    
    
    6,612,815
    
    
    
    43,535/203,965
    
    
    
    1,282,423/4,068,323Chief Financial Officer &
Co-Chief Operating
OfficerHurst Lin
    
    
    215,833
    
    
    
    6,961,169
    
    
    
    45,208/198,959
    
    
    
    778,173/3,914,316Co-Chief Operating OfficerLi-Cheng Chang
    
    
    69,600
    
    
    
    2,347,515
    
    
    
    4,649/0
    
    
    
    116,938/0Former EVP & Chief
Marketing OfficerBenjamin Tsiang
    
    
    45,000
    
    
    
    1,393,064
    
    
    
    6,249/80,001
    
    
    
    158,213/1,414,462EVP of Product
Development & GM of SINA
Online
   (1)
    
    Based on the $32.06 per share closing price of our ordinary shares on The Nasdaq National
Market on December 31, 2004, less the exercise price of the options. Director Compensation Except for reimbursement for reasonable travel expenses relating to attendance at board
meetings and the grant of stock options, our directors are not currently compensated for their
services as directors but our Articles of Association provide that they may be compensated at the
discretion of the directors. Employee directors are eligible to participate in our 1999 Stock Plan,
1999 Executive Stock Option Plan and 1999 Employee Stock Purchase Plan. Our non-employee directors
are eligible to participate in our 1999 Directors Stock Option Plan (the Directors Plan). The
Directors Plan provides for the grant to nonemployee directors of: (1) a nonstatutory share option
to purchase 37,500 ordinary shares on the date on which a nonemployee becomes a member of our Board
of Directors, and (2) an additional nonstatutory share option to purchase 15,000 shares on the date
of the shareholders meeting for each Board member who has served on the board for at least six
months. Employment Agreements We have entered into an Employment Agreement with Charles Chao dated June 1, 2002 with a term
of three years which provides, among other things, that Mr. Chao will receive certain severance
benefits, including (i) payment of his regular monthly salary for the larger of 12 months or the
remainder of the term of the Employment Agreement (the Severance Period); (ii) health insurance
coverage for the Severance Period; and (iii) continuous vesting of any unvested stock options or
shares of restricted stock held by him as of the date of his termination through the end of the
Severance Period, if he is terminated without cause or constructively terminated. Change of Control Agreements 8




---



##### Table of Contents



On November 27, 2000, the Company entered into change of control agreements with Yan Wang and
Hurst Lin. On February 1, 2001, the Company entered into a change of control agreement with Charles
Chao. In these agreements, the Company agreed to accelerate the vesting of all of these employees
options upon a change of control in which the successor corporation does not assume such
outstanding options. In addition, in connection with a termination without cause or resignation for
good reason (as defined in the agreements) following a change of control, these employees will be
entitled to a lump sum payment equal to their annual salary and projected bonus as well as a
pro-rated amount of their bonus for the calendar or fiscal year of such departure. Notwithstanding anything to the contrary set forth in any of the Companys filings under the
Securities Act of 1933 or the Securities Exchange Act of 1934 that might incorporate future
filings, including this 10-K/A, in whole or in part, the following Compensation Committee report
and the Stock Performance Graph which follow shall not be deemed to be incorporated by reference
into any such filings. COMPENSATION COMMITTEE REPORT ON EXECUTIVE COMPENSATION During the twelve-month period ended December 31, 2004, the Compensation Committee of our
Board of Directors (the Committee) consisted of Mr. Pehong Chen, Mr. Lip-Bu Tan and Mr. Yongji
Duan. The members of the Compensation Committee are independent non-employee directors. The following is a report of the Committee describing the compensation policies applicable to
the Companys executive officers during the twelve-month period ended December 31, 2004. The
Committee is responsible for establishing and monitoring the general compensation policies and
compensation plans of the Company, as well as the specific compensation levels for executive
officers. It also administers the granting of options to executive employees under the Companys
stock option plans. Executive officers who are also directors have not participated in
deliberations or decisions involving their own compensation. General Compensation Policy Under the supervision of the Board of Directors, the Companys compensation policy is designed
to attract and retain qualified key executives critical to the Companys growth and long-term
success. It is the objective of the Board of Directors to have a portion of each executives
compensation contingent upon the Companys performance as well as upon the individuals personal
performance. Accordingly, each executive officers compensation package is comprised of three
elements: (i) base salary which reflects individual performance and expertise, (ii) variable bonus
awards payable in cash and tied to the achievement of certain performance goals that the Board of
Directors establishes from time to time for the Company and (iii) long-term stock-based incentive
awards which are designed to strengthen the mutuality of interests between the executive officers
and the Companys shareholders. The summary below describes in more detail the factors which the Board of Directors considers
in establishing each of the three primary components of the compensation package provided to the
executive officers. Base Salary The level of base salary is established primarily on the basis of the individuals
qualifications and relevant experience, the strategic goals for which he or she has responsibility,
the compensation levels at companies which compete with the Company for business and executive
talent, and the incentives necessary to attract and retain qualified management. Base salary is
adjusted each year to take into account the individuals performance and to maintain a competitive
salary structure. Company performance does not play a significant role in the determination of base
salary. Cash-Based Incentive Compensation Cash bonuses are awarded on a discretionary basis to executive officers on the basis of their
success in achieving designated individual goals and the Companys success in achieving specific
company-wide goals. Long-Term Incentive Compensation 9




---



##### Table of Contents



The Company has utilized its stock option plans to provide executives and other key employees
with incentives to maximize long-term shareholder values. Awards under this plan by the Board of
Directors take the form of stock options designed to give the recipient a significant equity stake
in the Company and thereby closely align his or her interests with those of the Companys
shareholders. Factors considered in making such awards include the individuals position in the
Company, his or her performance and responsibilities, and comparability considerations. Each option grant allows the executive officer to acquire ordinary shares at a fixed price per
share (the fair market value on the date of grant) over a specified period of time (up to 10
years). The options typically vest in periodic installments over a four-year period, contingent
upon the executive officers continued employment with the Company, although exceptions may be made
when deemed necessary or appropriate. Accordingly, the option will provide a return to the
executive officer only if he or she remains in the Companys service, and then only if the market
price of the ordinary shares appreciates over the option term. In addition to the stock option
plans, executive employees are eligible to participate in the Companys 1999 Employee Stock
Purchase Plan. Compensation of the Chief Executive Officer The factors discussed above in Base Salaries, Cash-Based Incentive Compensation, and
Long-Term Incentive Compensation were also applied in establishing the amount of Mr. Wangs
salary and stock option grant. Significant factors in establishing Mr. Wangs compensation include
his performance and responsibilities, and comparability considerations. The current annual base
salary for Mr. Wang is set at $210,000 per annum by the Compensation Committee and has been
effective since July 2004. Prior to July 2004,
Mr. Wangs annual base salary was set at $144,945. Mr. Wang
received $177,494 as base salary for the twelve-month period ended December 31, 2004. In
addition to the base salary, Mr. Wang may earn up to 100% of his annual base salary as cash-based
incentive compensation for 2004 based on achievement of certain financial targets in 2004. Mr.
Wang received $128,140 in cash-based incentive compensation in 2004. Mr. Wang was also granted
options to purchase 200,000 shares of ordinary share in July 2004. These options have an exercise
price of $24.23 per share and vest over a four-year term with 12.5% of the options vesting on the sixth month
anniversary of the date of the grant and the remaining options vesting ratably on a monthly basis
over the remaining terms of the options. In addition, he also received $36,000 as the housing
allowance in 2004. Deductibility of Executive Compensation The Committee has considered the impact of Section 162(m) of the Internal Revenue Code adopted
under the Omnibus Budget Reconciliation Act of 1993, which section disallows a deduction for any
publicly held corporation for individual compensation exceeding $1 million in any taxable year for
the CEO and four other most highly compensated executive officers, respectively, unless such
compensation meets the requirements for the performance-based exception to Section 162(m). As the
cash compensation paid by the Company to each of its executive officers is expected to be below $1
million and the Committee believes that options granted under the Companys 1999 Stock Plan and
1999 Executive Stock Plan to such officers will meet the requirements for qualifying as
performance-based, the Committee believes that Section 162(m) will not affect the tax deductions
available to the Company with respect to the compensation of its executive officers. It is the
Committees policy to qualify, to the extent reasonable, its executive officers compensation for
deductibility under applicable tax law. However, the Company may from time to time pay compensation
to its executive officers that may not be deductible. Compensation Committee: Pehong Chen
Lip-Bu Tan
Yongji Duan Compensation Committee Interlocks and Insider Participation No member of the compensation committee serves as a member of the board of directors or
compensation committee of any other entity that has one or more executive officers serving as a
member of our board of directors or compensation committee. 10




---



##### Table of Contents



STOCK PERFORMANCE GRAPH The following graph compares the cumulative total shareholder return data for the Companys
shares since April 13, 2000 the date on which the Companys shares were first registered under
Section 12 of the Securities Exchange Act of 1934, as amended, and ending on December 31, 2004, to
the cumulative return over such period of (i) The Nasdaq National Market Composite Index and (ii)
the Morgan Stanley Internet Index (MOX). The graph assumes that $100 was invested on April 13,
2000 in the ordinary shares of the Company and in each of the comparative indices. The graph
further assumes that such amount was initially invested in the ordinary shares of the Company at a
per share price of $17.00, the price to which such shares were first offered to the public by the
Company on the date of its initial public offering. The stock price performance on the following
graph is not necessarily indicative of future stock price performance. COMPARISON OF CUMULATIVE TOTAL RETURN*
AMONG SINA CORPORATION, THE NASDAQ NATIONAL MARKET COMPOSITE INDEX
AND THE MORGAN STANLEY INTERNET INDEX (PERFORMANCE GRAPH) 4/13/2000
    
    
    6/30/2000
    
    
    12/29/2000
    
    
    6/29/2001
    
    
    12/31/2001
    
    
    6/28/2002
    
    
    12/31/2002
    
    
    6/30/2003
    
    
    12/31/03
    
    
    6/30/04
    
    
    12/31/04SINA Corporation
    
    $
    100.00
    
    
    $
    150.71
    
    
    $
    18.35
    
    
    $
    9.35
    
    
    $
    9.29
    
    
    $
    10.29
    
    
    $
    38.24
    
    
    $
    119.12
    
    
    $
    198.53
    
    
    $
    194.06
    
    
    $
    188.59Nasdaq Composite
Index
    
    $
    100.00
    
    
    $
    103.30
    
    
    $
    64.34
    
    
    $
    56.27
    
    
    $
    50.80
    
    
    $
    38.11
    
    
    $
    34.78
    
    
    $
    42.27
    
    
    $
    52.18
    
    
    $
    53.33
    
    
    $
    56.66Morgan Stanley
Internet Index
    
    $
    100.00
    
    
    $
    90.01
    
    
    $
    34.80
    
    
    $
    23.72
    
    
    $
    16.76
    
    
    $
    9.18
    
    
    $
    9.57
    
    
    $
    13.24
    
    
    $
    15.72
    
    
    $
    16.54
    
    
    $
    17.94
 11




---



##### Table of Contents



Item 12.Security Ownership of Certain Beneficial Owners and Management and Related Shareholder Matters ORDINARY SHARE OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT The following table sets forth certain information that has been provided to the Company with
respect to the beneficial ownership of our ordinary shares as of March 31, 2005 by:  
    each shareholder known to us to own beneficially more than 5% of the ordinary shares;
    each director;
    each of our executive officers listed in the Summary Compensation Table; and
    all our current directors and executive officers as a group. Percentage of beneficial ownership is based on 51,531,335 ordinary shares outstanding as of
March 31, 2005, together with options that are exercisable within 60 days of March 31, 2005 for
each shareholder. Beneficial ownership is determined in accordance with the rules of the SEC. Amount andNature of
    
    
    Percent ofBeneficial
    
    
    Ordinary SharesName and Address of Beneficial Owners
    
    Ownership(#)
    
    
    Outstanding(%)(1)Shanda Interactive Entertainment Limited and its affiliated entities (2)
    
    
    9,821,765
    
    
    
    19.1No. 1 Office Building, No. 690 Bibo Road
Pudong New Area, Shanghai, China 201203Capital Research and Management Company and its affiliated entities (3)
    
    
    4,595,000
    
    
    
    8.9333 South Hope Street 
Los Angeles, CA 90071Capital Group International, Inc. and its affiliated entities (3)
    
    
    3,387,380
    
    
    
    6.611100 Santa Monica Blvd. 
Los Angeles, CA 90025American Century Companies, Inc. and its affiliated entities (3)
    
    
    2,840,036
    
    
    
    5.54500 Main Street, 9thFloor 
Kansas City, MO 64111Yongji Duan and his affiliated entities (4)
    
    
    2,517,274
    
    
    
    4.9Stone Electronic Technology Limited 
27/ F, K. Wah Centre 
191 Java Road, North Point 
Hong KongDaniel Chiang (5)
    
    
    1,334,914
    
    
    
    2.6Lip-Bu Tan(6)
    
    
    102,947
    
    
    
    *Walden International Investment Group 
One California Street, 28th Floor 
San Francisco, CA 94111Ter Fung Tsao(7)
    
    
    107,500
    
    
    
    *c/o Helen Hsiao, 8F, Suite 801 
136, Jean-Ai Road, SEC. 3 
Taipei, TaiwanHurst Lin(8)
    
    
    328,905
    
    
    
    *Pehong Chen(9)
    
    
    43,732
    
    
    
    *BroadVision, Inc. 
585 Broadway 
Redwood City, CA 94063Charles Chao(10)
    
    
    96,235
    
    
    
    *
 12




---



##### Table of Contents



Amount andNature of
    
    
    Percent ofBeneficial
    
    
    Ordinary SharesName and Address of Beneficial Owners
    
    Ownership(#)
    
    
    Outstanding(%)(1)Yan Wang(11)
    
    
    125,666
    
    
    
    *Yichen Zhang(12)
    
    
    37,500
    
    
    
    *CITIC 
26/ F CITIC Tower 
1 Tim Mei Avenue, Central 
Hong KongBenjamin Tsiang (13)
    
    
    233,552
    
    
    
    *Xiaotao Chen
    
    
    0
    
    
    
    *Song-Yi Zhang (14)
    
    
    37,500
    
    
    
    *All current directors and executive officers as a group (12 persons)(15)
    
    
    4,965,725
    
    
    
    9.5
   *
    
    Less than one percent of the outstanding ordinary shares.(1)
    
    For each named person, the percentage ownership includes ordinary shares which the person has
the right to acquire within 60 days after March 31, 2005. However, such shares shall not be
deemed outstanding with respect to the calculation of ownership percentage for any other
person. Beneficial ownership calculations for 5% shareholders are based solely on
publicly-filed Schedule 13Ds or 13Gs, which 5% shareholders are required to file with the
SEC, and which generally set forth ownership interests as of December 31, 2004.(2)
    
    Beneficial ownership calculation is based solely on a review of a Schedule 13D filing made
with the Securities and Exchange Commission on February 18, 2005.(3)
    
    Beneficial ownership calculation is based solely on a review of Schedule 13G filings made
with the Securities and Exchange Commission. Such filings set forth beneficial ownership as of
December 31, 2004.(4)
    
    Includes 2,502,274 shares held by Sun Stone Media Group Limited (SSMG) for whom Mr. Duan
serves as a director. Mr. Duan disclaims beneficial ownership of the shares in which he has no
pecuniary interest. Also includes 15,000 shares issuable upon exercise of options exercisable
within 60 days of March 31, 2005. The address for SSMG is 11F/ A 1110, Hanwei Plaza, No. 7,
Guanghua Road, Beijing, Peoples Republic of China.(5)
    
    Includes 108,472 shares held by his wife, 90,000 shares held by a custodian account for his
son, 90,000 shares held by a custodian account for his daughter and 391,291 shares issuable
upon exercise of options exercisable within 60 days of March 31, 2005.(6)
    
    Includes 5,447 shares held by a trust controlled by Mr. Tan and 97,500 shares issuable upon
exercise of options exercisable within 60 days of March 31, 2005.(7)
    
    Includes 67,500 shares issuable upon exercise of options exercisable within 60 days of March
31, 2005.(8)
    
    Includes 92,499 shares issuable upon exercise of options exercisable within 60 days of March
31, 2005.(9)
    
    Includes 13,732 shares held by a trust controlled by Mr. Chen and 30,500 shares issuable upon
exercise of options exercisable within 60 days of March 31, 2005.(10)
    
    Includes 95,832 shares issuable upon exercise of options exercisable within 60 days of March 31, 2005.(11)
    
    Consists of 125,666 shares issuable upon exercise of options exercisable within 60 days of March 31, 2005.(12)
    
    Includes 30,000 shares issuable upon exercise of options exercisable within 60 days of March 31, 2005.(13)
    
    Includes 23,750 shares issuable upon exercise of options exercisable within 60 days of March 31, 2005.(14)
    
    Includes 37,500 shares issuable upon exercise of options exercisable within 60 days of March
31, 2005.(15)
    
    Includes 1,006,538 shares issuable upon exercise of options exercisable within 60 days of
March 31, 2005. Except as otherwise indicated, the address of each person listed in the table is SINA Corporation,
Room 1802, United Plaza, No. 1468 Nanjing West Road, Shanghai 200040, China, Attention: Corporate
Secretary. The persons named in the table have 13




---



##### Table of Contents



sole voting and investment power with respect to all ordinary shares shown as beneficially owned by
them, subject to community property laws where applicable. Equity Compensation Plan Information The following table sets forth information for our equity compensation plans as of December
31, 2004: Number of securitiesremaining available forfuture issuance underNumber of securities to
    
    
    
    Weighted average
    
    
    
    equity compensationbe issued upon exercise
    
    
    
    exercise price of
    
    
    
    plans (excludingof outstanding options,
    
    
    
    outstanding options,
    
    
    
    securities reflected inPlan Category
    
    
    warrants and rights
    
    
    
    warrants and rights
    
    
    
    column (a))(a)
    
    
    
    (b)
    
    
    
    (c)Equity compensation
plans approved by
security holders
    
    
    
    5,417,588
    (1)
    
    
    $
    11.62
    
    
    
    
    4,843,794 (2
    ) (3)Equity compensation
plans not approved
by security holders
    
    
    
    
    
    
    
    
    N/A
    
    
    
    

Total
    
    
    
    5,417,588
    
    
    
    $
    11.62
    
    
    
    
    4,843,794
    (2) Includes shares available for future issuance under the Purchase Plan. The Purchase Plan,
designed to comply with Internal Revenue Code Section 423, includes an evergreen feature, which
provides for an automatic annual increase in the number of shares available under the plan equal to
the lesser of 600,000 shares, 0.5 % of the ordinary shares outstanding on the last day of the
immediately preceding fiscal year, or such lesser number of shares as is determined by the Board of
Directors. (3) Includes shares available for future issuance under the 1999 Stock Plan (the 1999 Plan).
The 1999 Plan includes an evergreen feature, which provides for an automatic annual increase in
the number of ordinary shares available under the plan on the first day of each of the fiscal years
through 2005, equal to the lesser of 750,000 shares, 3% of our outstanding ordinary shares on the
last day of the immediately preceding fiscal year, or a lesser number of shares determined by the
Board of Directors. 14




---



##### Table of Contents



Item 13.Certain Relationships and Related Transactions Certain employment and compensation arrangements between the Company and its directors and
executive officers are described in Item 11 under Compensation of Executive Officers, Director
Compensation, Employment Agreements, and Change of Control Agreements. Indebtedness of Management Our subsidiary Beijing SINA Information Technology Co., Ltd. (formerly known as Beijing Stone
Rich Sight Information Technology Co., Ltd.) (BSIT), agreed to provide Yan Wang, our current
Chief Executive Officer, an interest-free loan of RMB300,000 for purposes of providing capital to
Beijing SINA Internet Information Services Co., Ltd. in 1999. In addition, BSIT has agreed to
provide Yan Wang interest free loans of RMB750,000 for purposes of providing capital to Beijing
SINA Interactive Advertising Co., Ltd. in 1999, and RMB300,000 for purposes of providing capital to
Guangdong SINA Internet Information Service Co., Ltd. in 2001. The entire principal amount of each
of these loans is currently outstanding. Indemnification Agreements We have entered into indemnification agreements with our officers and directors containing
provisions which may require us, among other things, to indemnify our officers and directors
against certain liabilities that may arise by reason of their status or service as officers or
directors, other than liabilities arising from willful misconduct of a culpable nature, and to
advance their expenses incurred as a result of any proceeding against them as to which they could
be indemnified. 
 Item 14.Principal Accountant Fees and Services Principal Accountant Fees and Services For the fiscal year ending December 31, 2004 , as well as our fiscal year ending December 31,
2003, PricewaterhouseCoopers, Zhong Tian CPAs Limited Company
(PwC), our independent auditor and principal accountant, billed the
fees set forth below. The Audit Committee of the Board of Directors has considered whether the
non-audit services provided by PwC are compatible with maintaining its
independence, and affirmatively approved the provision of such non-audit services by
PwC. Fiscal Year
    
    
    Fiscal YearEnding
    
    
    EndingDecember 31,
    
    
    December 31,2004
($)
    
    
    2003
($)Audit Fees
    
    
    950,000
    
    
    
    275,000Audit-Related Fees(1)
    
    
    270,000
    
    
    
    20,000Tax Fees (2)
    
    
    34,495
    
    
    
    31,775All Other Fees
    
    
    
    
    
    
    
   (1)
    
    Audit-related fees consist of fees billed for assurance and related services
that are reasonably related to the performance of the audit or review of the Companys
consolidated financial statements and are not reported under Audit Fees. These
services include accounting consultations and due diligence in connection with mergers
and acquisitions, general training and consultations related to internal control and
consultations concerning financial accounting standards on transfer pricing.(2)
    
    Tax fees consist of fees billed for professional services related to tax advice
and assistance with tax reporting. The Audit Committees policy is to pre-approve all audit and permissable non-audit services
provided by PwC. These services may include audit services, audit-related
services, tax services and other services. Pre-approval is generally provided for up to one year
and any pre-approval is detailed as to the particular service or category of services and is
generally subject to an initial estimated budget. PwC and management 15




---



##### Table of Contents



are required to periodically report to the Audit Committee regarding the extent of services
provided by PwC in accordance with this pre-approval, and the fees
performed to date. The Audit Committee may also pre-approve particular services on a case-by-case
basis. 
 PART IV 
 Item 15.Exhibits and Financial Statement Schedules (a) Exhibits See the Exhibit Index following the signature pages of this report 
 SIGNATURES Pursuant to the requirements of Section 13 or 15 (d) of the Securities Exchange Act of 1934,
SINA Corporation has duly caused this report to be signed on its behalf by the undersigned, thereto
duly authorized. SINA CorporationBy:
    /s/      Charles ChaoCharles ChaoChief Financial Officer Date: April 29, 2005 16




---



##### Table of Contents



Pursuant to the requirements of the Securities Exchange Act of 1934, this Amendment No. 1 on
Form 10-K has been signed by the following persons in the capacities and on the dates indicated: Signature
    
    Title
    
    Date*
    
    Chief Executive Officer and Director
    
    April 29, 2005(Principal Executive Officer)Yan Wang/s/ CHARLES CHAO
    
    Chief Financial Officer
    
    April 29, 2005(Principal Financial and Accounting Officer)Charles Chao*
    
    Co-Chairman of the Board
    
    April 29, 2005Daniel Chiang*
    
    Co-Chairman of the Board
    
    April 29, 2005Yongji Duan*
    
    Director
    
    April 29, 2005Pehong Chen*
    
    Director
    
    April 29, 2005Lip-Bu Tan*
    
    Director
    
    April 29, 2005Ter-Fung Tsao*
    
    Director
    
    April 29, 2005Yichen Zhang*
    
    Director
    
    April 29, 2005Xiaotao Chen*
    
    Director
    
    April 29, 2005Song-Yi Zhang
   *
    
    This Amendment No. 1 on Form 10-K/A was executed by Charles Chao pursuant to a Power of
Attorney filed with the Securities and Exchange Commission on March 16, 2005 in connection
with the Registrants Annual Report on Form 10-K for the fiscal year ended December 31, 2004. 17




---



##### Table of Contents



EXHIBIT INDEX ExhibitNumber
    
    Description2.1
    
    Share Purchase Agreement dated January 3, 2003 among SINA.com, Memestar
Limited and the Shareholders of Memestar Limited (Filed as Exhibit 10.64
to the Companys Report on Form 10-K for the transition period ended
December 31, 2002, as amended, and incorporated herein by reference.)2.2
    
    Letter dated January 6, 2003 regarding Amendment to Share Purchase
Agreement dated January 3, 2003 among SINA.com, Memestar Limited and the
Shareholders of Memestar Limited (Filed as Exhibit 10.70 to the Companys
Report on Form 10-K for the transition period ended December 31, 2002, as
amended, and incorporated herein by reference.)2.3
    
    Letter dated January 7, 2003 regarding Amendment to Share Purchase
Agreement dated January 3, 2003 among SINA.com, Memestar Limited and the
Shareholders of Memestar Limited (Filed as Exhibit 10.71 to the Companys
Report on Form 10-K for the transition period ended December 31, 2002, as
amended, and incorporated herein by reference.)2.4
    
    Stock Purchase Agreement dated February 24, 2004, among SINA, Crillion,
the shareholders of Crillion listed on Part I of Exhibit A of the Stock
Purchase Agreement and the individuals listed on Part II of Exhibit A of
the Stock Purchase Agreement (Filed as Exhibit 2.1 to the Companys
Report on Form 8-K filed on April 7, 2004, and incorporated herein by
reference).2.5
    
    Amendment Agreement dated March 23, 2004, among SINA, Crillion, the
shareholders of Crillion listed on Part I of Exhibit A of the Stock
Purchase Agreement and the individuals listed on Part II of Exhibit A of
the Stock Purchase Agreement (Filed as Exhibit 2.2 to the Companys
Report on Form 8-K filed on April 7, 2004, and incorporated herein by
reference).2.6
    
    Equity Transfer Agreement dated February 24, 2004, among the individuals
listed on Schedule A attached to the Equity Transfer Agreement, Shenzhen
Wang Xing Technology Co., Ltd., a limited liability company organized and
existing under the laws of the Peoples Republic of China, and the
individuals listed on Schedule B attached to the Equity Transfer
Agreement (Filed as Exhibit 2.3 to the Companys Report on Form 8-K filed
on April 7, 2004, and incorporated herein by reference).2.7
    
    Stock Purchase Agreement dated July 1, 2004 among SINA Corporation,
Davidhill Capital Inc., the shareholders of Davidhill Capital Inc. listed
on Part I of Exhibit A to such agreement, and the company and individuals
listed on Part II of Exhibit A to such agreement. (Filed as Exhibit 2.1
to the Companys Report on Form 8-K filed on October 22, 2004, and
incorporated herein by reference).2.8
    
    Amendment Agreement dated October 13, 2004 among SINA Corporation,
Davidhill Capital Inc., the shareholders of Davidhill Capital Inc. listed
on Part I of Exhibit A to the Stock Purchase Agreement, and the company
and individuals listed on Part II of Exhibit A to the Stock Purchase
Agreement. (Filed as Exhibit 2.2 to the Companys Report on Form 8-K
filed on October 22, 2004, and incorporated herein by reference).2.9
    
    Asset Purchase Agreement dated July 1, 2004 by and between Guiyang
Longmaster Information Technology Co., Ltd. and Beijing Davidhill
Internet Technology Service Co., Ltd. (Filed as Exhibit 2.3 to the
Companys Report on Form 8-K filed on October 22, 2004, and incorporated
herein by reference).3.1*
    
    Amended and Restated Articles of Association of SINA Corporation.3.2*
    
    Amended and Restated Memorandum of Association of SINA.com.4.1
    
    Amended and Restated Investors Rights Agreement dated October 19, 1999
among SINA.com and certain holders of SINA.coms securities (Filed as
Exhibit 4.2 to the Companys Registration Statement on Form F-1,
Registration
 18




---



##### Table of Contents



ExhibitNumber
    
    DescriptionNo. 333-11718, filed on March 27, 2000, as amended, and
incorporated herein by reference.)4.2
    
    Form of Subordinated Note due July 15, 2023 (Filed as Exhibit 4.1 to the
Companys Report on Form 10-Q for the three month period ended June 30,
2003, and incorporated herein by reference).4.3
    
    Indenture, dated as of July 7, 2003, by and between the Company and the
Bank of New York (Filed as Exhibit 4.2 to the Companys Report on Form
10-Q for the three month period ended June 30, 2003, and incorporated
herein by reference).4.4
    
    Registration Rights Agreement, dated as of July 7, 2003, by and between
the Company and Credit Suisse First Boston LLC (Filed as Exhibit 4.3 to
the Companys Report on Form 10-Q for the three month period ended June
30, 2003, and incorporated herein by reference).4.5
    
    Rights Agreement dated as of February 22, 2005 between SINA Corporation
and American Stock Transfer & Trust Company, as Rights Agent (Filed as
Exhibit 4.1 to the Companys Report on Form 8-K filed on February 24,
2005, and incorporated herein by reference).10.1#
    
    Form of Indemnification Agreement between SINA.com and each of its
officers and directors (Filed as Exhibit 10.1 to the Companys
Registration Statement on Form F-1, Registration No. 333-11718, filed on
March 27, 2000, as amended, and incorporated herein by reference.)10.2#
    
    SRS International Ltd. 1997 Stock Option Plan and form of incentive stock
option agreement (Filed as Exhibit 10.2 to the Companys Registration
Statement on Form F-1, Registration No. 333-11718, filed on March 27,
2000, as amended, and incorporated herein by reference.)10.3#
    
    Sinanet.com 1997 Stock Plan and form of stock option agreement (Filed as
Exhibit 10.3 to the Companys Registration Statement on Form F-1,
Registration No. 333-11718, filed on March 27, 2000, as amended, and
incorporated herein by reference.)10.4#
    
    Amended SINA.com 1999 Stock Plan and form of share option agreement
(Filed as Exhibit 10.4 to the Companys Registration Statement on Form
F-1, Registration No. 333-11718, filed on March 27, 2000, as amended, and
incorporated herein by reference.)10.5#*
    
    Form of share option agreement under the amended SINA.com 1999 Stock Plan.10.6#
    
    1999 Employee Stock Purchase Plan (Filed as Exhibit 10.5 to the Companys
Registration Statement on Form F-1, Registration No. 333-11718, filed on
March 27, 2000, as amended, and incorporated herein by reference.)10.7#
    
    Form of subscription agreement under the 1999 Employee Stock Purchase
Plan. (Filed as Exhibit 10.5 to the Companys Registration Statement on
Form F-1, Registration No. 333-11718, filed on March 27, 2000, as
amended, and incorporated herein by reference.)10.8#
    
    1999 Directors Stock Option Plan (Filed as Exhibit 10.6 to the Companys
Registration Statement on Form F-1, Registration No. 333-11718, filed on
March 27, 2000, as amended, and incorporated herein by reference.)10.9#
    
    Form of nonstatutory stock option agreement under the 1999 Directors
Stock Option Plan (Filed as Exhibit 10.6 to the Companys Registration
Statement on Form F-1, Registration No. 333-11718, filed on March 27,
2000, as amended, and incorporated herein by reference.)10.10
    
    Lease Contract dated September 2003 between Guangzhou Urban Construction
& Development Co., Ltd and Guangzhou Media Message Technologies, Inc. for
offices located at Floor 10, No. 123, Tiyu West Street, Tianhe District,
Guangzhou (Filed as Exhibit 10.7 to the Companys Report on Form 10-K for
the year ended December 31, 2003, as amended, and incorporated herein by
reference).10.11
    
    Supplements to Lease Contract dated September 2003 between Guangzhou
Urban Construction & Development Co., Ltd and Guangzhou Media Message
Technologies, Inc. for offices located at Floor 10, No. 123, Tiyu West
Street,
 19




---



##### Table of Contents



ExhibitNumber
    
    DescriptionTianhe District, Guangzhou (Filed as Exhibit 10.8 to the
Companys Report on Form 10-K for the year ended December 31, 2003, as
amended, and incorporated herein by reference).10.12
    
    Lease Contract dated September 29, 2003 between Beijing Wanyujiaye Real
Estate Agency Co., Ltd and Beijing Sina Information Technology Co., Ltd
for offices located at Floor 16, Building C, Area A, SOHO, No. 88,
Jianguo Street, Chaoyang District, Beijing (Filed as Exhibit 10.9 to the
Companys Report on Form 10-K for the year ended December 31, 2003, as
amended, and incorporated herein by reference).10.13
    
    Office Lease dated December 31, 2003 between Lee, Po-Hu and SINA.Com
Online for offices located at 3F, No.29 An Ho Road, Section 1, Ta An
District, Taipei, Taiwan (Filed as Exhibit 10.10 to the Companys Report
on Form 10-K for the year ended December 31, 2003, as amended, and
incorporated herein by reference).10.14
    
    First Amendment to Sublease dated November 24, 2003 between E.PIPHANY,
Inc. and SINA.com Online for offices located at 2988 Campus Drive, Suite
100, San Mateo, California (Filed as Exhibit 10.11 to the Companys
Report on Form 10-K for the year ended December 31, 2003, as amended, and
incorporated herein by reference).10.15
    
    Sublease dated January 11, 2002 between E.PIPHANY, Inc. and SINA.com
Online for offices located at 2988 Campus Drive, Suite 100, San Mateo,
California (Filed as Exhibit 10.56 to the Companys Report on Form 10-Q
for the three month period ended March 31, 2002, and incorporated herein
by reference.)10.16
    
    Office Lease dated July 18, 2002 between Shanghai Four Seasons Tong Ren
Real Estate Developing Co., Ltd and Beijing Stone Rich Sight Information
Technology Co., Ltd for office located at Suite 1802-5 United Plaza, 1468
Nanjing West Street, Jingan District, Shanghai, China (Filed as Exhibit
10.61 to the Companys Report on Form 10-K for year ended June 30, 2002,
and incorporated herein by reference.)10.17
    
    Lease Agreement and supplemental agreements of Modern City dated June 6,
2003 and July 23, 2003 among Li Yanping, Wei Yingkui and Beijing Sina
Information Technology Co., Ltd. for offices located at 18th Floor, Block
C, SOHO Modern City, 88 Jianguo Road, Chaoyang District, Beijing, China
(Filed as Exhibit 10.2 to the Companys Report on Form 10-Q for the three
month period ended June 30, 2003, and incorporated herein by reference.)10.18
    
    Office Lease dated December 19, 2002 between Man Hing Hong Land
Investment Company Limited and Sina.com (Hong Kong) Limited for the
office located at Room 1003-4, 10/F, Manyee Building, 68 Des Voeux Road
Central, Hong Kong (Filed as Exhibit 10.69 to the Companys Report on
Form 10-K for the transition period ended December 31, 2002, as amended,
and incorporated herein by reference.)10.19
    
    Lease agreements between Beijing Stone Rich Sight Information Technology
Co. Ltd. and the following entities: a) Beijing Shilihe Property
Management Company Ltd dated October 16, 1997, b) Beijing Wanquan Hope
Technology Development Center dated April 2, 1998, and c) Wanquan Primary
School, Haidian District, Beijing dated December 15, 1998. All agreements
are for office space located in Beijing Wanquan Primary School, Haidian
District, Beijing (Filed as Exhibit 10.9 to the Companys Registration
Statement on Form F-1, Registration No. 333-11718, filed on March 27,
2000, as amended, and incorporated herein by reference.)10.20#
    
    SINA.com 1999 Executive Stock Plan (Filed as Exhibit 10.19 to the
Companys Registration Statement on Form F-1, Registration No. 333-11718,
filed on March 27, 2000, as amended, and incorporated herein by
reference.)10.21
    
    Purchase Agreement, dated as of June 30, 2003, by and between the Company
and Credit Suisse First Boston LLC (Filed as Exhibit 10.3 to the
Companys Report on Form 10-Q for the three month period ended June 30,
2003, and incorporated herein by reference.)10.22
    
    Business Cooperation Agreement dated March 7, 2000 between Beijing SINA
Internet Information Services Co., Ltd. and BSRS (Filed as Exhibit 10.23
to the Companys Registration Statement on Form F-1, Registration No.
333-11718, filed on March 27, 2000, as amended, and incorporated herein
by reference.)10.23
    
    Equipment and Leased Line Transfer Agreement dated March 7, 2000 between
Beijing SINA Internet Information Services Co., Ltd. and BSRS (Filed as
Exhibit 10.23 to the Companys Registration Statement on Form F-1,
Registration No. 333-11718, filed on March 27, 2000, as amended, and
incorporated herein by reference.)
 20




---



##### Table of Contents



ExhibitNumber
    
    Description10.24
    
    Advertising Agency Agreement dated March 7, 2000 between Beijing SINA
Internet Information Services Co., Ltd. and SINA.com (Filed as Exhibit
10.26 to the Companys Registration Statement on Form F-1, Registration
No. 333-11718, filed on March 27, 2000, as amended, and incorporated
herein by reference.)10.25
    
    Advertisement Production and Technical Service Agreement dated March 7,
2000 between Beijing Stone Rich Sight Information Technology Co., Ltd.
and Beijing SINA Interactive Advertising Co. Ltd (Filed as Exhibit 10.27
to the Companys Registration Statement on Form F-1, Registration No.
333-11718, filed on March 27, 2000, as amended, and incorporated herein
by reference.)10.26
    
    Advertising Publication and Cooperation Agreement dated March 7, 2000
between Beijing SINA Internet Information Services Co., Ltd. and Beijing
SINA Interactive Advertising Co., Ltd (Filed as Exhibit 10.28 to the
Companys Registration Statement on Form F-1, Registration No. 333-11718,
filed on March 27, 2000, as amended, and incorporated herein by
reference.)10.27
    
    Amendment to Advertising Agency Agreement dated April 1, 2000 between
Beijing SINA Interactive Advertising Co., Ltd. and SINA.com (Filed as
Exhibit 10.37 to the Companys Registration Statement on Form F-1,
Registration No. 333-11718, filed on March 27, 2000, as amended, and
incorporated herein by reference.)10.28
    
    Amendment to Advertisement Publication and Cooperation Agreement dated
April 1, 2000 between Beijing SINA Interactive Advertising Co., Ltd. and
Beijing SINA Internet Information Services Co., Ltd (Filed as Exhibit
10.38 to the Companys Registration Statement on Form F-1, Registration
No. 333-11718, filed on March 27, 2000, as amended, and incorporated
herein by reference.)10.29
    
    Amendment to Advertising Production and Technical Service Agreement dated
April 1, 2000 between Beijing Stone Rich Sight Information Technology
Co., Ltd. and Beijing SINA Interactive Advertising Co., Ltd (Filed as
Exhibit 10.39 to the Companys Registration Statement on Form F-1,
Registration No. 333-11718, filed on March 27, 2000, as amended, and
incorporated herein by reference.)10.30
    
    E-Commerce Cooperation Agreement dated April 1, 2000 between Beijing
Stone Rich Sight Information Technology Co., Ltd. and Beijing SINA
Internet Information Services Co., Ltd (Filed as Exhibit 10.40 to the
Companys Registration Statement on Form F-1, Registration No. 333-11718,
filed on March 27, 2000, as amended, and incorporated herein by
reference.)10.31#
    
    Change of Control Agreement dated November 27, 2000 with Hurst Lin (Filed
as Exhibit 10.46 to the Companys Report on Form 10-Q for the three month
period ended December 31, 2000, and incorporated herein by reference.)10.32#
    
    Change of Control Agreement dated November 27, 2000 with Yan Wang (Filed as Exhibit 10.47 to the Companys Report on
Form 10-Q for the three month period ended December 31, 2000, and incorporated herein by reference.)10.33#
    
    Change of Control Agreement dated February 1, 2001 with Charles Chao (Filed as Exhibit 10.48 to the Companys Report
on Form 10-Q for the three month period ended March 31, 2001, and incorporated herein by reference.)10.34#
    
    Employment Agreement dated June 1, 2002 between Charles Chao and SINA.com (Filed as Exhibit 10.60 to the Companys
Report on Form 10-K for the year ended June 30, 2002, and incorporated herein by reference.)10.35
    
    Agreement and Mutual Release, dated as of May 11, 2003, by and between the Company and Daniel Mao (Filed as Exhibit
10.1 to the Companys Report on Form 10-Q for the three month period ended June 30, 2003, and incorporated herein by
reference.).10.36
    
    Agreement on Short Message Service Cooperation dated November 12, 2002 between Guangzhou Media Message Technologies
Inc. and Guangdong Mobile Communications Corporation (Filed as Exhibit 10.37 to the Companys Report on Form 10-K
for the year ended December 31, 2003, as amended, and incorporated herein by reference).10.37
    
    Monternet Short Message Cooperation Agreement dated April 28, 2003 between Beijing SINA Internet Information
Services Co., Ltd. and Beijing Mobile Communications Corporation (Filed as Exhibit 10.38 to the Companys
 21




---



##### Table of Contents



ExhibitNumber
    
    DescriptionReport on
Form 10-K for the year ended December 31, 2003, as amended, and incorporated herein by reference).10.38
    
    Form of Loan Agreement between Beijing Sina Information Technology Co., Ltd (a subsidiary of the Company) and the
Companys employees for funding the Variable Interest Entities controlled by the Company (Filed as Exhibit 10.39 to
the Companys Report on Form 10-K for the year ended December 31, 2003, as amended, and incorporated herein by
reference).10.39
    
    Form of Agreement on Authorization to Exercise Shareholders Voting Power between Beijing Sina Information
Technology Co., Ltd (a subsidiary of the Company) and the Companys employees in relation to Variable Interest
Entities controlled by the Company (Filed as Exhibit 10.40 to the Companys Report on Form 10-K for the year ended
December 31, 2003, as amended, and incorporated herein by reference).10.40
    
    Technical Services Agreement dated September 1, 2003 between Beijing New Media Information Technology Co., Ltd. and
Guangzhou Media Message Technologies Inc (Filed as Exhibit 10.41 to the Companys Report on Form 10-K for the year
ended December 31, 2003, as amended, and incorporated herein by reference).10.41
    
    Technical Cooperation Agreement dated September 28, 2003 between Beijing New Media Information Technology Co., Ltd.
and Guangzhou Media Message Technologies Inc (Filed as Exhibit 10.42 to the Companys Report on Form 10-K for the
year ended December 31, 2003, as amended, and incorporated herein by reference).10.42
    
    Technical Services Agreement dated September 1, 2003 between Beijing New Media Information Technology Co., Ltd. and
Guangdong SINA Internet Information Services Co., Ltd (Filed as Exhibit 10.43 to the Companys Report on Form 10-K
for the year ended December 31, 2003, as amended, and incorporated herein by reference).10.43
    
    Technical Services Agreement dated January 10, 2003 between Star-Village.com (Beijing) Internet Technology Limited
and Guangzhou Media Message Technologies Inc (Filed as Exhibit 10.44 to the Companys Report on Form 10-K for the
year ended December 31, 2003, as amended, and incorporated herein by reference).10.44
    
    Technical Services Agreement dated January 1, 2003 between Beijing SINA Internet Technology Services Co., Ltd. and
Beijing SINA Internet Information Services Co., Ltd (Filed as Exhibit 10.45 to the Companys Report on Form 10-K for
the year ended December 31, 2003, as amended, and incorporated herein by reference).10.45
    
    Technical Services Agreement dated February 24, 2004 between Beijing New Media Information Technology Co., Ltd. and
Shenzhen Wang Xing Technology Co., Ltd Ltd (Filed as Exhibit 10.1 to the Companys Report on Form 10-Q for the three
month period ended March 31, 2004, and incorporated herein by reference).10.46
    
    Lease Agreement of Ideal International Plaza dated April 16, 2004 between SINA Information Technology Company
Limited and Beijing Zhongwu Ideal Real Estate Development Co., Ltd. for the office located in Suite 01  12, Floor
20, Ideal International Plaza, 2 Zhongguancun High-Tech Square, Beijing, PRC (Filed as Exhibit 10.1 to the Companys
Report on Form 10-Q for the three month period ended June 30, 2004, and incorporated herein by reference).10.47
    
    Form Lease Agreement of Ideal International Plaza between the Registrants subsidiaries or VIEs and Beijing Zhongwu
Ideal Real Estate Development Co., Ltd. for the office located in Ideal International Plaza, 2 Zhongguancun
High-Tech Square, Beijing, PRC, and the list of the lease agreements (Filed as Exhibit 10.1 to the Companys Report
on Form 10-Q for the three month period ended September 30, 2004, and incorporated herein by reference).10.48*
    
    Translation of Monternet Short Message Cooperation Agreement dated March 23, 2004 between Beijing SINA Internet
Information Services Co., Ltd. and Guangdong Mobile Communications Corporation10.49*
    
    Office Lease dated November 20, 2004 between Huang Xu, Xiu-Xiang and SINA.Com Online for offices located at 5F, No.
362, Dun-Hua S.Rd., Sec. 1, Ta An District, Taipei City Taiwan10.50*
    
    Office Lease dated November 11, 2004 between Man Hing Hong Land Investment Company Limited and Sina.com (Hong Kong)
Limited for the office located at Room 1003-4, 10/F, Manyee Building, 68 Des Voeux Road Central, Hong Kong
 22




---



##### Table of Contents



ExhibitNumber
    
    Description21.1*
    
    List of Subsidiaries.23.1*
    
    Consent of Independent Registered Public Accounting Firm.23.2*
    
    Consent of Jun He Law offices.24.1*
    
    Power of Attorney.31.1**
    
    Certificate of Chief Executive Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as Adopted
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.31.2**
    
    Certificate of Chief Financial Officer pursuant to Securities Exchange Act Rules 13a-14(a) and 15d-14(a) as Adopted
Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002.32.1**
    
    Certificate of Chief Executive Officer pursuant to 18 U.S.C. section 1350.32.2**
    
    Certificate of Chief Financial Officer pursuant to 18 U.S.C. section 1350.
   *
    
    Filed with the Companys Report on Form 10-K for the fiscal year ended December 31, 2004 (which
report was filed on March 16, 2005).#
    
    Indicates a management contract or compensatory plan or arrangement, as required by Item 15(a)3.**
    
    Filed herewith. 23