WAL

SEC source: 0001212545-25-000063 · wk-form4_1739226970.xml · derivative · entry 6

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,015

Underlying: Common Stock · 1,104 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of WAL common stock.

F4 · derivative.exercise_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F4 · derivative.expiration_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F5 · balance_after: The number of restricted stock units beneficially owned by the reporting person following the transaction includes the reinvestment of WAL's quarterly dividends, which resulted in an additional 49 restricted stock units.

SEC source: 0001212545-25-000063 · wk-form4_1739226970.xml · derivative · entry 5

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,649

Underlying: Common Stock · 2,649 shares

Expires not disclosed

F1 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: 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 February 2025 and ending January 2028.

F2 · derivative.exercise_date: 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 February 2025 and ending January 2028.

F2 · derivative.expiration_date: 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 February 2025 and ending January 2028.

SEC source: 0001212545-25-000063 · wk-form4_1739226970.xml · nonDerivative · entry 1

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 9,743

SEC source: 0001212545-25-000059 · wk-form4_1739226927.xml · derivative · entry 6

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 6,804

Underlying: Common Stock · 1,104 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of WAL common stock.

F4 · derivative.exercise_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F4 · derivative.expiration_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F5 · balance_after: The number of restricted stock units beneficially owned by the reporting person following the transaction includes the reinvestment of WAL's quarterly dividends, which resulted in an additional 47 restricted stock units.

SEC source: 0001212545-25-000059 · wk-form4_1739226927.xml · derivative · entry 5

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,483

Underlying: Common Stock · 2,483 shares

Expires not disclosed

F1 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · derivative.exercise_date: 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 February 2025 and ending January 2028.

F2 · derivative.expiration_date: 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 February 2025 and ending January 2028.

SEC source: 0001212545-25-000059 · wk-form4_1739226927.xml · nonDerivative · entry 1

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 64,169

SEC source: 0001212545-25-000058 · wk-form4_1739226916.xml · nonDerivative · entry 1

Figuereo Juan R · CIK 0001393697 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,269

SEC source: 0001212545-25-000057 · wk-form4_1739226905.xml · nonDerivative · entry 1

JAMMET MARY CHRIS · CIK 0001599796 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,861

SEC source: 0001212545-25-000054 · wk-form4_1739226873.xml · derivative · entry 6

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 24,424

Underlying: Common Stock · 3,311 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of WAL common stock.

F5 · derivative.exercise_date: The restricted stock units vest upon the Reporting Person's Qualified Retirement from the Company.

F5 · derivative.expiration_date: The restricted stock units vest upon the Reporting Person's Qualified Retirement from the Company.

F6 · balance_after: The number of restricted stock units beneficially owned by the reporting person following the transaction includes the reinvestment of WAL's quarterly dividends, which resulted in an additional 178 restricted stock units.

SEC source: 0001212545-25-000054 · wk-form4_1739226873.xml · derivative · entry 5

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,615

Underlying: Common Stock · 7,615 shares

Expires not disclosed

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F3 · derivative.exercise_date: 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 February 2025 and ending January 2028.

F3 · derivative.expiration_date: 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 February 2025 and ending January 2028.

SEC source: 0001212545-25-000054 · wk-form4_1739226873.xml · nonDerivative · entry 1

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 299,803

SEC source: 0001212545-25-000053 · wk-form4_1739226862.xml · nonDerivative · entry 1

Meola Anthony T · CIK 0001363257 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,683

SEC source: 0001212545-25-000051 · wk-form4_1739226839.xml · derivative · entry 7

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 39,301

Underlying: Common Stock · 5,519 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of WAL common stock.

F5 · derivative.exercise_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F5 · derivative.expiration_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F6 · balance_after: The number of restricted stock units beneficially owned by the reporting person following the transaction includes the reinvestment of WAL's quarterly dividends, which resulted in an additional 286 restricted stock units.

SEC source: 0001212545-25-000051 · wk-form4_1739226839.xml · derivative · entry 6

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,726

Underlying: Common Stock · 15,726 shares

Expires not disclosed

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F3 · derivative.exercise_date: 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 February 2025 and ending January 2028.

F3 · derivative.expiration_date: 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 February 2025 and ending January 2028.

SEC source: 0001212545-25-000051 · wk-form4_1739226839.xml · nonDerivative · entry 1

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 456,785

SEC source: 0001212545-25-000048 · wk-form4_1739226803.xml · nonDerivative · entry 1

BEACH BRUCE D · CIK 0001331624 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,980

SEC source: 0001212545-25-000047 · wk-form4_1739226792.xml · derivative · entry 5

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,482

Underlying: Common Stock · 1,104 shares

Expires not disclosed

F4 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of WAL common stock.

F5 · derivative.exercise_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F5 · derivative.expiration_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F6 · balance_after: The number of restricted stock units beneficially owned by the reporting person following the transaction includes the reinvestment of WAL's quarterly dividends, which resulted in an additional 28 restricted stock units.

SEC source: 0001212545-25-000047 · wk-form4_1739226792.xml · derivative · entry 4

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,655

Underlying: Common Stock · 1,655 shares

Expires not disclosed

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F3 · derivative.exercise_date: 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 February 2025 and ending January 2028.

F3 · derivative.expiration_date: 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 February 2025 and ending January 2028.

SEC source: 0001212545-25-000047 · wk-form4_1739226792.xml · nonDerivative · entry 1

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,266

SEC source: 0001212545-25-000046 · wk-form4_1739226779.xml · derivative · entry 5

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 10,946

Underlying: Common Stock · 1,656 shares

Expires not disclosed

F3 · derivative.exercise_price: Each restricted stock unit represents a contingent right to receive one share of WAL common stock.

F4 · derivative.exercise_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F4 · derivative.expiration_date: The restricted stock units are payable upon the Reporting Person's Qualified Retirement from the Company as described in the Plan documents.

F5 · balance_after: The number of restricted stock units beneficially owned by the reporting person following the transaction includes the reinvestment of WAL's quarterly dividends, which resulted in an additional 78 restricted stock units.

SEC source: 0001212545-25-000046 · wk-form4_1739226779.xml · derivative · entry 4

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,138

Underlying: Common Stock · 4,138 shares

Expires not disclosed

F1 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · derivative.exercise_date: 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 February 2025 and ending January 2028.

F2 · derivative.expiration_date: 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 February 2025 and ending January 2028.

SEC source: 0001212545-25-000046 · wk-form4_1739226779.xml · nonDerivative · entry 1

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 29,177

SEC source: 0001212545-25-000163 · wk-form4a_1747689795.xml · nonDerivative · entry 1

BEACH BRUCE D · CIK 0001331624 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,914

F1 · balance_after: The Form 4, as originally filed, inadvertently incorrectly reported the amounts of securities beneficially owned directly and indirectly by the Reporting Person following the reported transaction, due to a previous change in form of ownership. On August 4, 2023, the Reporting Person transferred 5,066 directly held WAL shares to the Beach Revocable Trust U/A DTD 7/27/2007. This amendment is filed to correct the amounts beneficially owned directly and indirectly following the reported transaction. There were no other changes made to the information in the original filing.

SEC source: 0001212545-25-000014 · wk-form4_1737148412.xml · derivative · entry 3

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 857

Underlying: Common Stock · 35 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000014 · wk-form4_1737148412.xml · nonDerivative · entry 2

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 829

SEC source: 0001212545-25-000014 · wk-form4_1737148412.xml · nonDerivative · entry 1

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 864

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000011 · wk-form4_1737148379.xml · derivative · entry 3

Curley Stephen Russell · CIK 0001441890 · Chief Banking Ofc.-NBL

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,139

Underlying: Common Stock · 165 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000011 · wk-form4_1737148379.xml · nonDerivative · entry 2

Curley Stephen Russell · CIK 0001441890 · Chief Banking Ofc.-NBL

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,718

SEC source: 0001212545-25-000011 · wk-form4_1737148379.xml · nonDerivative · entry 1

Curley Stephen Russell · CIK 0001441890 · Chief Banking Ofc.-NBL

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,883

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000018 · wk-form4_1737148453.xml · derivative · entry 4

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,433

Underlying: Common Stock · 58 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000018 · wk-form4_1737148453.xml · nonDerivative · entry 2

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,162

SEC source: 0001212545-25-000018 · wk-form4_1737148453.xml · nonDerivative · entry 1

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 12,220

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000017 · wk-form4_1737148443.xml · derivative · entry 4

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,513

Underlying: Common Stock · 101 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000017 · wk-form4_1737148443.xml · nonDerivative · entry 2

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,977

SEC source: 0001212545-25-000017 · wk-form4_1737148443.xml · nonDerivative · entry 1

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,078

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000016 · wk-form4_1737148432.xml · derivative · entry 3

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,957

Underlying: Common Stock · 158 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000016 · wk-form4_1737148432.xml · nonDerivative · entry 2

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,417

SEC source: 0001212545-25-000016 · wk-form4_1737148432.xml · nonDerivative · entry 1

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,575

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000015 · wk-form4_1737148422.xml · derivative · entry 4

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,428

Underlying: Common Stock · 97 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000015 · wk-form4_1737148422.xml · nonDerivative · entry 2

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,513

SEC source: 0001212545-25-000015 · wk-form4_1737148422.xml · nonDerivative · entry 1

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 62,610

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000013 · wk-form4_1737148402.xml · derivative · entry 3

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,797

Underlying: Common Stock · 72 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000013 · wk-form4_1737148402.xml · nonDerivative · entry 2

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,084

SEC source: 0001212545-25-000013 · wk-form4_1737148402.xml · nonDerivative · entry 1

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,156

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000012 · wk-form4_1737148391.xml · derivative · entry 4

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,117

Underlying: Common Stock · 285 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000012 · wk-form4_1737148391.xml · nonDerivative · entry 2

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 294,726

SEC source: 0001212545-25-000012 · wk-form4_1737148391.xml · nonDerivative · entry 1

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 295,011

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

SEC source: 0001212545-25-000010 · wk-form4_1737148369.xml · derivative · entry 5

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 13,487

Underlying: Common Stock · 539 shares

Expires not disclosed

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F2 · derivative.exercise_price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F2 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.

F1 · derivative.exercise_date: 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.

F1 · derivative.expiration_date: 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.

SEC source: 0001212545-25-000010 · wk-form4_1737148369.xml · nonDerivative · entry 2

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 446,300

SEC source: 0001212545-25-000010 · wk-form4_1737148369.xml · nonDerivative · entry 1

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 446,839

Exercise/conversion can include RSU settlement. Transaction price and option strike are different fields; a missing price is not zero. Derivative and underlying rows can describe the same event.

F1 · shares: 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 · price: Each unit is the economic equivalent of one share of Western Alliance Bancorporation common stock.