Lynne Herndon - 15 Mar 2026 Form 4 Insider Report for WESTERN ALLIANCE BANCORPORATION (WAL)

Role
Chief Credit 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, 16:26:03 UTC
Previous filing
18 Feb 2026
SEC
View on sec.gov

Reporting Owners (1)

Name Relationship Address Signature Signature date CIK
Herndon Lynne Chief Credit Officer 1 E. WASHINGTON STREET, SUITE 1400, PHOENIX /s/Jessica Jarvi (Attorney-in-fact) 17 Mar 2026 0002007542

Transactions Table

Type Sym Class Transaction Value $ Shares Change % * Price $ Shares After Date Ownership Footnotes
transaction WAL Common Stock Options Exercise +35 +1.9% $0.000000* 1,915 15 Mar 2026 Direct F1, F2
transaction WAL Common Stock Disposed to Issuer -35 -1.8% $67.97* 1,880 15 Mar 2026 Direct
transaction WAL Common Stock Options Exercise +22 +1.2% $0.000000* 1,902 15 Mar 2026 Direct F2, F3
transaction WAL Common Stock Disposed to Issuer -22 -1.2% $67.97* 1,880 15 Mar 2026 Direct
transaction WAL Common Stock Options Exercise +27 +1.4% $0.000000* 1,907 15 Mar 2026 Direct F2, F4
transaction WAL Common Stock Disposed to Issuer -27 -1.4% $67.97* 1,880 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 -35 -8.7% 367 15 Mar 2026 Common Stock 35 Direct F1, F2
transaction WAL Cash Settled Restricted Stock Units Options Exercise -22 -4.2% 508 15 Mar 2026 Common Stock 22 Direct F2, F3
transaction WAL Cash Settled Restricted Stock Units Options Exercise -27 -2.7% 960 15 Mar 2026 Common Stock 27 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