Western Alliance Bancorporation is a bank holding company. The Company provides a range of deposit, lending, treasury management, international banking and online banking products and services through its banking subsidiary, Western Alliance Bank (WAB or the Bank). The Company's regional segments include Arizona, Nevada, Southern California and Northern California, which provide banking and related services to their respective markets. The operations from the regional segments correspond to the banking divisions, which include Alliance Bank of Arizona (ABA) in Arizona, Bank of Nevada (BON) and First Independent Bank (FIB) in Nevada, Torrey Pines Bank (TPB) in Southern California, and Bridge Bank in Northern California. The Company's National Business Lines (NBL) segments include HOA Services, Hotel Franchise Finance (HFF), Public & Nonprofit Finance, Technology & Innovation, Other NBLs, which provide specialized banking services to niche markets.