UNITED STATES SECURITIES AND EXCHANGE COMMISSION

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

Commission File Number 000-30698

SINA CORPORATION

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

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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:

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:

     Yan Wang has 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 Chiang has 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

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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 Chao has 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 Lin co-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 Tsiang co-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 Chen has 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 Duan has 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 Tan has 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 Tsao has 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.

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     Yichen Zhang has 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 Chen has 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 Zhang has 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

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     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

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

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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.

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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.

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

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     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

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     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.

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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

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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:

     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.

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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

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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:

     (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.

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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.

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

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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.

Date: April 29, 2005

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     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:

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EXHIBIT INDEX

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