SINA [SINA] SC 13G/A: (Original Filing)
[CUSIP No. G81477104 1. Names of Reporting Persons Macquarie Group Limited 2. Check the Appropriate Box if a Member of a Group (See Instructions) (a) ☒ (b) ☐ 3. SEC Use Only 4. Citizenship or Place of Organization Sydney, New South Wales Australia Number of Shares Beneficially Owned by Each Reporting]