East West Bank Share: Banks & Banking Associations East West Bank Visit Website 27 E. 4th Ave. San Mateo, CA 94401 (650) 340-6760 About Map About East West Bank is a wholly owned subsidiary of East West Bancorp, a publicly owned company with total assets over $38.1 billion and is traded on the Nasdaq under the symbol ''EWBC''. What's Nearby? Distance: 5 10 15 20 25 50 mi.