Royal Dutch Shell plc: Buyback of Own Shares12:42 EST Tuesday, November 27, 2012LONDON, November 27, 2012 /PRNewswire/ --Royal Dutch Shell plc (NYSE: RDS.A) (NYSE: RDS.B) announces that on 27 November, 2012 it purchased for cancellation 500,000 "B" Shares at a price of 2150.82 pence per share.                                              Following the cancellation of these shares, the remaining number of "A" Shares of Royal Dutch Shell plc will be 3,738,139,035 and the remaining number of "B" Shares of Royal Dutch Shell plc will be 2,621,823,020                                                                                    Enquiries Shell Media Relations International, UK, European Press: +31-70-377-3600 Shell Investor Relations Europe: +31-70-377-3996  United States: +1-713-241-2069SOURCE Royal Dutch Shell plc