His father who was from Merzifon in the Sivas Vilayet of the Ottoman Empire (present-day Turkey) had immigrated from Constantinople in 1884, and organised the successful import firm, Costikyan Freres (later known as Kent-Costikyan, Incorporated) which still exists and specializes in oriental carpets.
Yale University; Dartmouth College.
Granger was educated at Hotchkiss School, graduating in 1925, and Yale University, graduating in 1929. Costikyan was with the New York Trust Company from 1929 to 1959, and was for many years a partner of Brown Brothers Harriman. He was Vice President of the Chemical Bank of New York, from 1959 to 1962.
And Senior Vice President of the First Bank System of Minneapolis, from 1962 to 1969.
Costikyan also served as Chairman of the First Bank System of Minneapolis.
He was a member of the Skull and Bones secret society.
