Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces completion of acquisition of a 25.095% stake in MTS Bank OJSC for 5.09 billion rubles through an additional share issuance by the bank. The transaction was completed in accordance with the terms disclosed on March 29, 2013. The transaction is subject to the registration of the shares issuance report by Russian Central Bank.