15 Feb 2017 --- Aryzta CEO Owen Killian has stepped down following a series of financial issues at the Irish-Swiss food group. Swiss food maker Aryzta announced a record decline in shares with earnings set to decrease 20% this year, the latest in a long line of problems at the firm which says it has been struggling with the impact of Brexit, as well as taking a financial hit after introducing its Otis Spunkmeyer snacks to the US market.