[] [Execution Version SINA CORPORATION and AMERICAN STOCK TRANSFER & TRUST COMPANY, LLC Rights Agreement Dated as of April 23, 2015 TABLE OF CONTENTS Page Section 1. Certain Definitions 3 Section 2. Appointment of Rights Agent 6 Section 3. Issuance of Rights Certificates 7 Section 4. Form of Rights Certificates 8 Section 5. 9 Section 6. Transfer, Split-Up, Combination and Exchange]