Deputy President Cyril Ramaphosa has completed negotiations for the sale of most of his business interests to the Pembani company led by MTN Group chairman Phuthuma Nhleko, creating a $1-billion black-owned company, people familiar with the matter say. Ramaphosa's family trust sold his 30% stake in Shanduka Group, the group he founded in 2001 after quitting government, three people said, asking not to be identified because the information hasn't been made public. He will retain investments in property and McDonald's.After at least a year of negotiations all legal documents have been signed and the transaction is now awaiting approval from regulators, the three said.Shanduka has stakes in 29 businesses, ranging from Standard Bank to MTN.Ramaphosa's remaining company shareholdings will he held in blind trusts, his office said last year.Shanduka's net asset value, including the business interests Ramaphosa's family trust will retain, was R8.8-billion as of May last year.Shanduka spokesman Lorraine Jagesar and Pembani spokesman Lufuno Makhari were not immediately available for comment. Ronnie Mamoepa, a spokesman for Ramaphosa, declined to comment.Ramaphosa, 62, re-entered politics in 2012 when he became deputy president of the ANC. He became deputy national president last year.His divestment completes a promise to resolve any conflicts of interest since becoming the country's deputy president.Prior to 1994, he formed the National Union of Mineworkers, led negotiations that ended apartheid and helped to write the constitution.With a fortune of $550-million Ramaphosa is the country's second-richest black person after Patrice Motsepe, his brother-in-law.Nhleko is the fifth-richest black South African with assets of $142-million. He pioneered MTN to become Africa's biggest mobile-phone operator. Nhleko's Pembani group has investments in the coal unit of BHP Billiton.As a black-owned company, the new entity, which is yet to be given a name, will benefit from BEE legislation...