Golden State Bancorp operates as the holding company for Golden State Bank that provides personal and business banking services in Los Angeles, Orange, Riverside, and San Bernardino counties in California. The company accepts checking, savings, money market, and individual retirement accounts, as well as certificates of deposit. Its loan products comprise business operating business term, commercial real estate, equipment financing, and construction loans, as well as letters of credit. The company also provides bill payment, transfers, cash managements, armored car and courier, debit/atm card, bill payment, remote deposit capture, and online and mobile banking services. It serves the business, commercial, and professional markets through its branches located in Glendale and Upland. The company was founded in 2015 and is headquartered in Glendale, California.