Exhibit 21.1

WESTERN ALLIANCE BANCORPORATION

LIST OF SUBSIDIARIES

(As of December 31, 2022)

Name	Doing Business As	Jurisdiction of Incorporation or Organization
Western Alliance Bank	Alliance Bank of Arizona Bridge Bank First Independent Bank Bank of Nevada Torrey Pines Bank Alliance Association Bank Western Alliance Corporate Finance Western Alliance Public Finance Western Alliance Resort Finance Western Alliance Warehouse Lending	Arizona
CS Insurance Co.	Not applicable	Arizona
Las Vegas Sunset Properties	Not applicable	Nevada
BES Comp Services Co.	Not applicable	Delaware
Digital Settlement Technologies, LLC	Digital Disbursements	Delaware
Helios Prime, Inc.	Not applicable	Delaware
Western Alliance Business Trust	Not applicable	Delaware
WA PWI, LLC	Not applicable	Arizona
Western Alliance Trust Company, National Association	Not applicable	Arizona
Western One, LLC	Not applicable	Arizona
Western Two, LLC	Not applicable	Arizona
Western Finance Company	Not applicable	Arizona
Western Alliance Mortgage Holding Company, LLC	Not applicable	Arizona
AmeriHome Mortgage Company, LLC	Not applicable	Delaware
Western Alliance Equipment Finance, LLC	Not applicable	Arizona
BW Real Estate, Inc.	Not applicable	Nevada
BankWest Nevada Capital Trust II	Not applicable	Delaware
Intermountain First Statutory Trust I	Not applicable	Connecticut
First Independent Statutory Trust I	Not applicable	Delaware
WAL Trust No. 1	Not applicable	Delaware
WAL Statutory Trust No. 2	Not applicable	Connecticut
WAL Statutory Trust No. 3	Not applicable	Connecticut
Bridge Capital Holdings Trust I	Not applicable	Delaware
Bridge Capital Holdings Trust II	Not applicable	Delaware