WAL

SEC source: 0001212545-24-000330 · wk-form4_1734469729.xml · derivative · entry 3

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 892

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: 0001212545-24-000330 · wk-form4_1734469729.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: 0001212545-24-000330 · wk-form4_1734469729.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: 0001212545-24-000333 · wk-form4_1734469760.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,304

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: 0001212545-24-000333 · wk-form4_1734469760.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: 0001212545-24-000333 · wk-form4_1734469760.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: 0001212545-24-000337 · wk-form4_1734469802.xml · derivative · entry 5

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,026

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: 0001212545-24-000337 · wk-form4_1734469802.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: 0001212545-24-000337 · wk-form4_1734469802.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.

SEC source: 0001212545-24-000336 · wk-form4_1734469791.xml · derivative · entry 4

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,525

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: 0001212545-24-000336 · wk-form4_1734469791.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: 0001212545-24-000336 · wk-form4_1734469791.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: 0001212545-24-000335 · wk-form4_1734469781.xml · derivative · entry 4

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,491

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: 0001212545-24-000335 · wk-form4_1734469781.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: 0001212545-24-000335 · wk-form4_1734469781.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: 0001212545-24-000334 · wk-form4_1734469770.xml · derivative · entry 3

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,869

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: 0001212545-24-000334 · wk-form4_1734469770.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: 0001212545-24-000334 · wk-form4_1734469770.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: 0001212545-24-000332 · wk-form4_1734469749.xml · derivative · entry 3

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,115

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: 0001212545-24-000332 · wk-form4_1734469749.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: 0001212545-24-000332 · wk-form4_1734469749.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: 0001212545-24-000331 · wk-form4_1734469738.xml · derivative · entry 4

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,614

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: 0001212545-24-000331 · wk-form4_1734469738.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: 0001212545-24-000331 · wk-form4_1734469738.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: 0001212545-24-000329 · wk-form4_1734469718.xml · derivative · entry 4

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,402

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: 0001212545-24-000329 · wk-form4_1734469718.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: 0001212545-24-000329 · wk-form4_1734469718.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: 0001212545-25-000064 · wk-form5_1739226981.xml · nonDerivative · entry 2

JOHNSON MARIANNE BOYD · CIK 0001186742 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Samuel J. Johnson (spouse)

Disclosed balance after: 2,496

F1 · kind: WAL's quarterly dividends paid on certain shares held by the reporting person were reinvested in additional shares of the Company's stock. These transactions were inadvertently effectuated within six months of a matching disposition. Accordingly, the Reporting Person realized short-swing profits of $9.90 under Section 16(b) of the Securities Exchange Act of 1934, as amended, as a result of the sale of securities on August 30, 2024 and subsequent acquisition of the Issuer's common shares reported herein. The Reporting Person has voluntarily disgorged to the Issuer all of such short-swing profits realized by the Reporting Person from such transactions. The reporting person has since changed the reinvestment elections to avoid inadvertent matchable transactions in the future.

SEC source: 0001212545-24-000307 · wk-form4_1731964474.xml · derivative · entry 3

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 927

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: 0001212545-24-000307 · wk-form4_1731964474.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: 0001212545-24-000307 · wk-form4_1731964474.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: 0001212545-24-000311 · wk-form4_1731964760.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,469

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: 0001212545-24-000311 · wk-form4_1731964760.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: 0001212545-24-000311 · wk-form4_1731964760.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: 0001212545-24-000315 · wk-form4_1731965123.xml · derivative · entry 4

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,622

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: 0001212545-24-000315 · wk-form4_1731965123.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: 0001212545-24-000315 · wk-form4_1731965123.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: 0001212545-24-000313 · wk-form4_1731964961.xml · derivative · entry 3

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,273

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: 0001212545-24-000313 · wk-form4_1731964961.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: 0001212545-24-000313 · wk-form4_1731964961.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: 0001212545-24-000309 · wk-form4_1731964630.xml · derivative · entry 4

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,687

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: 0001212545-24-000309 · wk-form4_1731964630.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: 0001212545-24-000309 · wk-form4_1731964630.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: 0001212545-24-000305 · wk-form4_1731964333.xml · derivative · entry 4

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,549

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: 0001212545-24-000305 · wk-form4_1731964333.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: 0001212545-24-000305 · wk-form4_1731964333.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: 0001212545-24-000303 · wk-form4_1731964172.xml · derivative · entry 4

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,715

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: 0001212545-24-000303 · wk-form4_1731964172.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: 0001212545-24-000303 · wk-form4_1731964172.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: 0001212545-24-000301 · wk-form4_1731964044.xml · derivative · entry 3

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,941

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.