Western Alliance Bancorp is a bank holding company, which engages in the provision of deposit, lending, treasury management, international banking, and online banking products and services. The company is headquartered in Phoenix, Arizona and currently employs 3,655 full-time employees. The company went IPO on 2005-06-30. The company provides a full spectrum of customized loan, deposit and treasury management capabilities, including funds transfer and other digital payment offerings through its wholly owned banking subsidiary, Western Alliance Bank. The company operates through its banking divisions: Alliance Bank of Arizona, Bank of Nevada, Bridge Bank, First Independent Bank, and Torrey Pines Bank. The firm also provides an array of specialized financial services to business customers across the country, including mortgage banking services through AmeriHome, treasury management services to the homeowner's association sector, and digital payment services for the class-action legal industry. The company has two non-bank subsidiaries, such as CS Insurance Company (CSI) and Western Alliance Trust Company, N.A. (WATC). CSI is a captive insurance company. WATC provides corporate trust services and levered loan administration solutions.