Boris Romanovich Rotenberg Boris Romanovich Rotenberg Boris Romanovich Rotenberg (, born in Leningrad on 3 January 1957) is a Russian business man and oligarch. He is co-owner (with his brother Arkady Rotenberg) of the SGM (StroyGazMontazh) group, the largest construction company for gas pipelines and electrical power supply lines in Russia. He was listed by Forbes as Russia's 69th wealthiest person in 2016 with a net worth of $1.07 billion. He is considered a close confidant of president Vladimir Putin. Rotenberg was very involved in martial arts between 1968 and 1978, particularly judo. He trained alongside Vladimir Putin and won several awards for
Arkady Rotenberg of Rotenberg's real estate, including four villas in Sardinia and Tarquinia, and a hotel in Rome. The Russian State Duma then proposed a bill, known as the Rotenberg Law, allowing sanctioned Russians to get compensated by the state, but it was declined. Rotenberg's personal wealth has been estimated in 2018 at $3.1 billion. He was formerly married to his second wife Natalia Rotenburg, who is about 30 years his junior. They were divorced about 2015 in the U.K. While the financial details of the divorce are private, the agreement includes division of the use of a £35 million Surrey mansion