Mustafa Vehbi Koc, chairman of Turkey’s biggest group of companies, died at a hospital in Istanbul on Thursday after a heart attack. He was 55.
Koc, the eldest grandson of Koc Holding AS founder Vehbi Koc, led the group, whose 2014 sales of $31.3 billion accounted for about 5 percent of Turkey’s gross domestic product, for about 13 years after taking over from his father. He is survived by his wife Caroline and two daughters. He has two brothers, Ali and Omer.