Sherry Ann Mohan, Managing Director at Goldman SachsSource: Goldman SachsGoldman Sachs continues to lose key managers in its fledgling consumer banking business.Goldman's CFO, Consumer Business, which owns the Marcus Brand and Apple Card, joins JPMorgan Chase. This is evident from an internal memo obtained solely from CNBC.Sherry Ann Mohan will join JPMorgan in August as Chief Financial Officer,...