Grandisson appointed CEO of Arch Capital

Marc Grandisson, president and chief operating officer (COO) of Arch Capital Group (ACGL), has been promoted to the additional position of chief executive officer, replacing Constantine Iordanou.

Iordanou was appointed chief executive officer of ACGL in August 2003 and became chairman of the board of ACGL in November 2009. He will retain his position as the chairman.

Grandisson has also been appointed to the board of directors of ACGL and the executive committee of the board.

He joined Arch Reinsurance in October 2001 as chief actuary. He has been the chairman and chief executive officer of Arch Worldwide Reinsurance Group from 2005 to 2015, and the chairman and chief executive officer of Arch Worldwide Mortgage Group from February 2014 to December 2015. He became president and COO of ACGL on January 1, 2016.