BONA [Bona Film] SC 13G/A: (Original Filing)
[CUSIP No. 09777B107 SCHEDULE 13G Page 2 of 6 Pages 1 NAMES OF REPORTING PERSONS SAIF Partners IV L.P. 2 CHECK THE APPROPRIATE BOX IF A MEMBER OF A GROUP ¨ x (a) 3 SEC USE ONLY 4 CITIZENSHIP OR PLACE OF ORGANIZATION Cayman Islands NUMBER OF SHARES BENEFICIALLY OWNED BY EACH REPORTING PERSON WITH 5]