Casual apparel giant Gap Inc on Saturday announced its chief financial officer Heidi Kunz had quit and would be replaced by Byron Pollit who like its new CEO Paul Pressler joins from the Walt Disney Co. The California-based retailer did not give a reason for Ms Kunz's departure after three and a half years but said Mr Pollit, aged 51, was previously CFO and executive vice president for Walt Disney Parks and Resorts.