Hakan Atilla Appointed Chair of İstanbul Stock Exchange 2019-10-22 10:45:24 NEWS CENTER - Minister of Treasury and Finance Berat Albayrak has announced that Hakan Atilla, the former Deputy General Manager of Halkbank who served time in prison for violating US sanctions against Iran, will take office as the Chair of Borsa İstanbul. Hakan Atilla, the former Halkbank Deputy General Manager who served 28 months in prison in the US for violating US sanctions against Iran, has been appointed as the Chair of Borsa İstanbul (İstanbul Stock Exchange).   The appointment of Atilla has been announced by Minister of Treasury and Finance Berat Albayrak on his Twitter account.   "Having reunited with his family and country after an unjust conviction, Hakan Atilla's period of rest has come to an end. He is taking office as the Chair of Borsa İstanbul. I wish that this duty will be to the benefit of his and of the BİST", Minister Albayrak has said on Twitter.