Emily Nachlas - 15 Mar 2026 Form 4 Insider Report for WESTERN ALLIANCE BANCORPORATION (WAL)

Role
Chief Risk Officer
Signature
/s/Jessica Jarvi (Attorney-in-fact)
Issuer symbol
WAL
Transactions as of
15 Mar 2026
Net transactions value
$0
Form type
4
Filing time
17 Mar 2026, 16:25:13 UTC
Previous filing
18 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Nachlas Emily Chief Risk Officer C/O WESTERN ALLIANCE BANCORPORATION, ONE E. WASHINGTON STREET, STE 1400, PHOENIX /s/Jessica Jarvi (Attorney-in-fact) 17 Mar 2026 0001946843

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WAL Common Stock Options Exercise +72 +0.43% $0.000000* 16,647 15 Mar 2026 Direct F1, F2
transaction WAL Common Stock Disposed to Issuer -72 -0.43% $67.97* 16,575 15 Mar 2026 Direct
transaction WAL Common Stock Options Exercise +53 +0.32% $0.000000* 16,628 15 Mar 2026 Direct F2, F3
transaction WAL Common Stock Disposed to Issuer -53 -0.32% $67.97* 16,575 15 Mar 2026 Direct
transaction WAL Common Stock Options Exercise +64 +0.39% $0.000000* 16,639 15 Mar 2026 Direct F2, F4
transaction WAL Common Stock Disposed to Issuer -64 -0.38% $67.97* 16,575 15 Mar 2026 Direct

Derivative Securities (e.g., puts, calls, warrants, options, convertible securities)

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Underlying Class Amount Exercise Price Ownership Footnotes
transaction WAL Cash Settled Restricted Stock Units Options Exercise -72 -8.4% 789 15 Mar 2026 Common Stock 72 Direct F1, F2
transaction WAL Cash Settled Restricted Stock Units Options Exercise -53 -4.2% 1,214 15 Mar 2026 Common Stock 53 Direct F2, F3
transaction WAL Cash Settled Restricted Stock Units Options Exercise -64 -2.8% 2,241 15 Mar 2026 Common Stock 64 Direct F2, F4
* An asterisk sign (*) next to the price indicates that the price is likely invalid.

Explanation of Responses:

Id Content
F1 These units vest and are payable solely in cash as follows: 1/36th on the 15th day of each month during the 36-month period beginning March 2024 and ending February 2027.
F2 Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.
F3 These units vest and are payable solely in cash as follows: 1/36th on the 15th day of each month during the 36-month period beginning March 2025 and ending February 2028.
F4 These units vest and are payable solely in cash as follows: 1/36th on the 15th day of each month during the 36-month period beginning March 2026 and ending February 2029.