Born in 1953, Erhan Topaç completed his postgraduate studies at Boğaziçi University, Faculty of Mechanical Engineering, and then completed his doctoral studies on Mathematical Modeling at the Department of Industrial Engineering at the same university. Between 1979-1989, he took part in various positions at Eczacıbaşı Holding. He served as Pepsi Cola Marketing Manager in 1989-1990. Erhan Topaç has been working with Gedik Investment Menkul Değerler A.Ş., Inveo Investment Holding A.Ş., Marbaş Menkul Değerler A.Ş. He is the Chairman of the Board of the companies.