[1][2] He emigrated to the United States at the age of 15, and he spent the rest of his adolescence in Brooklyn, New York City,[2] where his father was a tailor.
[1][4] His initial industrial management career was with BTR plc, where he rose to be a board director.
Quarta is a partner of Clayton, Dubilier & Rice, a private equity group.
[7] In June 2015, he was appointed chairman of WPP plc, succeeding Philip Lader.
[8][9][10] Following the resignation of Martin Sorrell, CEO and founder of WPP, he became executive chairman in April 2018.