G. Arnold Hart

After graduating he joined the Bank of Montreal as a clerk.^[1] In 1959, Hart was appointed president of the bank, and was also the first president to assume the title of chief executive officer.

In December 1964 he was elected chairman of the board,^[2] and in 1967 ceded the presidency to Robert David Mulholland.^[3] In December 1971, Hart gave the title of chief executive officer to John Leonard Walker, who had been appointed president in December 1968.^[4] However, due to Walker's failing health, Hart reassumed the title of chief executive in December 1972, shortly before Walker died the following February.^[5] He remained chief executive until the end of 1974, when he was succeeded by Frederick Harold McNeil.

On 2 September 1939, Hart married Jean Cartwright Gilbert (1914–1960). They had one daughter, Diane. After Jean's death, on 8 December 1961, Hart remarried to Patricia Isabelle Plant (1917–2014).

Hart died on 5 October 2001 at age 88.