February 2015

27.02.2015
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that the Company has transferred its 100% ownership stake in Private Joint Stock Company “MTS-Ukraine” along with its indirect ownership stake through its subsidiary PTT Telecom Kyiv, to Preludium B.V., a wholly owned subsidiary incorporated in The Netherlands, which in turn is 100% owned by Allegretto Holding S.a.r.l., a wholly owned subsidiary of MTS OJSC incorporated in the Grand Duchy of Luxemburg.

26.02.2015
Ad-Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that Moody's Investors Service has downgraded MTS’s senior unsecured issuer rating from Baa3 to Ba1 following the downgrade of the Russia’s sovereign debt rating to Ba1/Not Prime (NP) from Baa3/Prime-3 (P-3). Moody's has also assigned a Ba1-PD probability of default rating (PDR) to MTS. The ratings remain on review.

23.02.2015
MTS-Ukraine Wins 3G License

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or the “Company” – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that is subsidiary MTS-Ukraine has won a tender for a nationwide license for the provision of 3G telecommunications services in the 1950-1965 MHz/2140-2155 MHz ranges as a result of the open tender held by the National Commission for the State Regulation of Communications and Informatization (NCSRCI). The cost of the license amounted to UAH 2.715 bln.

12.02.2015
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” or "the Company" – NYSE: MBT), the leading telecommunications provider in Russia and the CIS, announces that MGTS-Nedvizhimost CJSC, the wholly owned subsidiary of Moscow City Telephone Network OJSC (MGTS), a subsidiary of MTS, has completed the sale of its 51% stake in Rent-Nedvizhimost CJSC to Business- Nedvizhimost CJSC for a price of RUB 4.34 billion. MGTS-Nedvizhimost CJSC retains a 49% stake in Rent-Nedvizhimost CJSC.

05.02.2015
Ad Hoc Notice

Moscow, Russian Federation – Mobile TeleSystems OJSC (“MTS” – NYSE: MBT), the leading telecommunications operator in Russia and the CIS, announces that Standard & Poor's Ratings Services has downgraded the Company’s long-term foreign and local currency corporate credit rating from 'BBB-' to 'BB+' following the downgrade of the Russia’s sovereign rating from ‘BBB-‘ to ‘BB+’. The outlook on the MTS’s foreign currency rating and the local currency rating remains negative. Ratings on the Company's senior unsecured debt were downgraded from 'BBB-' to 'BB+'.

Contact investor relations:

+ 7 495 223 20 25 ir@mts.ru

MTS Investor Relations
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