Standard Chartered said on Wednesday that it has appointed Naguib Kheraj as senior independent director effective from 16 June.Naguib replaces Ruth Markland, who, as previously announced, will step down from the board by the end of 2015.Naguib has been an independent non-executive director of the company since January 2014 and has chaired the Audit Committee since May 2014. He is also a member of the Governance and Nomination Committee, the Board Risk Committee and the Board Financial Crime Risk Committee.At 09:17, StanChart shares were down 1.2% at 1,013p.