Igor Rotenberg Igor Rotenberg Igor Rotenberg, () is a Russian billionaire businessman and the oldest son and heir to Arkady Rotenberg, Russian billionaire businessman and co-owner with brother Boris Rotenberg, of the SGM (Stroygazmontazh) group. The Rotenberg's are closely associated with Vladimir Putin. In October 2018, Igor Rotenberg's wealth is estimated to be $1.1 billion. Igor Rotenberg has been under United States sanctions since 6 April 2018. Igor is the majority shareholder in Gazprom Drilling. Igor Rotenberg was born on 9 September 1974 in Leningrad to Arkady Rotenberg. In 2002, he graduated from the Higher School of Privatization and Entrepreneurship () in
Arkady Mikhailovich Chernetsky Center. Arkady Mikhailovich Chernetsky Arkady Mikhailovich Chernetsky () (born May 8, 1950) is a Russian politician who has served as Mayor of Yekaterinburg, Sverdlovsk Oblast, Russia since January 1992 to November 2, 2010. Arkady Mikhailovich Chernetsky was born on May 8, 1950 in Nizhny Tagil to an engineer (his father) and a surgeon (his mother). In 1972, he graduated from the metallurgical department of the Ural Polytechnic Institute. From 1972 to 1974 Chernetsky served as a tank platoon commander in the Soviet army. He was stationed in the Turkmenia Military District. He completed his term of service as a colonel.