Mobil'nye TeleSistemy OAO (Mobile TeleSystems OJSC or MTS OAO) is a Russia-based company engaged in the telecommunication industry. The Company provides a range of mobile and fixed line voice and data telecommunications services, including transmission, broadband, pay-television (TV) and various value-added services, as well as selling equipment and accessories. The Company provides its services to approximately 105 million customers in the Russian Federation, Ukraine, Uzbekistan, Armenia and Belarus. MTS OAO operates through numerous branches located domestically and in Belarus, as well as four subsidiaries. As of May 15, 2012, the Company's major shareholder was JP Morgan Chase Bank National Association with a stake of 37.62%. In October 2012, the Company acquired a 100% stake in Zheleznogorsk City Telephone Communications CJSC. In addition, in November 2012, the Company acquired a whole stake in Pilot OOO and TVKiK OOO.