WAL

SEC source: 0001212545-24-000266 · wk-form4_1726604102.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: 0001212545-24-000265 · wk-form4_1726604091.xml · derivative · entry 4

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,257

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: 0001212545-24-000265 · wk-form4_1726604091.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: 0001212545-24-000265 · wk-form4_1726604091.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: 0001212545-24-000263 · wk-form4_1726604068.xml · derivative · entry 5

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 15,643

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: 0001212545-24-000263 · wk-form4_1726604068.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: 0001212545-24-000263 · wk-form4_1726604068.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: 0001212545-24-000262 · wk-form4_1726604058.xml · derivative · entry 4

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,917

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: 0001212545-24-000262 · wk-form4_1726604058.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: 0001212545-24-000262 · wk-form4_1726604058.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: 0001212545-24-000264 · wk-form4_1726604081.xml · nonDerivative · entry 1

LATTA ROBERT P · CIK 0001223581 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Robert P. Latta Spousal Lifetime Access Trust, dated December 4, 2020

Disclosed balance after: 38,621

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.00 to $81.39, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.

SEC source: 0001212545-24-000251 · wk-form4_1726089969.xml · nonDerivative · entry 1

LATTA ROBERT P · CIK 0001223581 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,056

SEC source: 0001212545-25-000064 · wk-form5_1739226981.xml · nonDerivative · entry 1

JOHNSON MARIANNE BOYD · CIK 0001186742 · Director

10b5-1 filing: No plan indicated

Ownership: Indirect · Samuel J. Johnson (spouse)

Disclosed balance after: 2,486

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: 0001212545-24-000249 · wk-form4_1725486829.xml · nonDerivative · entry 1

JOHNSON MARIANNE BOYD · CIK 0001186742 · Director

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,351

SEC source: 0001212545-24-000246 · wk-form4_1724879440.xml · nonDerivative · entry 1

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 7,977

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $81.58 to $81.66, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.

F2 · balance_after: The reporting person's Form 4 filed on 8/19/2024 incorrectly reported that the reporting person directly owned 19,161 shares of common stock after the transactions reported in such Form 4, but the reporting person then directly owned 19,060 shares of common stock.

SEC source: 0001212545-24-000241 · wk-form4_1724101867.xml · derivative · entry 3

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,032

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: 0001212545-24-000241 · wk-form4_1724101867.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: 0001212545-24-000241 · wk-form4_1724101867.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: 0001212545-24-000244 · wk-form4_1724101898.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,964

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: 0001212545-24-000244 · wk-form4_1724101898.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: 0001212545-24-000244 · wk-form4_1724101898.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: 0001212545-24-000243 · wk-form4_1724101887.xml · derivative · entry 4

Jarvi Jessica H · CIK 0001981756 · CLO & Secretary

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,723

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: 0001212545-24-000243 · wk-form4_1724101887.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: 0001212545-24-000243 · wk-form4_1724101887.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: 0001212545-24-000242 · wk-form4_1724101876.xml · derivative · entry 4

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,018

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: 0001212545-24-000242 · wk-form4_1724101876.xml · nonDerivative · entry 2

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,161

SEC source: 0001212545-24-000242 · wk-form4_1724101876.xml · nonDerivative · entry 1

Kennedy Barbara · CIK 0001379831 · Chief Human Resources Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 19,161

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: 0001212545-24-000239 · wk-form4_1724101845.xml · derivative · entry 4

Boothe Timothy W · CIK 0001364140 · Chief Administration Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,913

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: 0001212545-24-000239 · wk-form4_1724101845.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: 0001212545-24-000239 · wk-form4_1724101845.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: 0001212545-24-000240 · wk-form4_1724101857.xml · derivative · entry 3

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 4,747

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: 0001212545-24-000240 · wk-form4_1724101857.xml · nonDerivative · entry 2

Bruckner Tim R · CIK 0001771957 · CBO for Regional Banking

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 26,575

SEC source: 0001212545-24-000240 · wk-form4_1724101857.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: 0001212545-24-000238 · wk-form4_1724101835.xml · derivative · entry 4

GIBBONS DALE · CIK 0001331626 · Vice Chairman and CFO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 8,542

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: 0001212545-24-000238 · wk-form4_1724101835.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: 0001212545-24-000238 · wk-form4_1724101835.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: 0001212545-24-000237 · wk-form4_1724101825.xml · derivative · entry 3

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 2,157

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: 0001212545-24-000237 · wk-form4_1724101825.xml · nonDerivative · entry 2

Nachlas Emily · CIK 0001946843 · Chief Risk Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 14,156

SEC source: 0001212545-24-000237 · wk-form4_1724101825.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: 0001212545-24-000236 · wk-form4_1724101814.xml · derivative · entry 7

Vecchione Kenneth · CIK 0001398948 · Director · President and CEO

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 16,182

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: 0001212545-24-000236 · wk-form4_1724101814.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: 0001212545-24-000236 · wk-form4_1724101814.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: 0001212545-24-000226 · wk-form4_1722894279.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 36,718

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $76.29 to $76.60, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.

SEC source: 0001212545-24-000217 · wk-form4_1721855507.xml · nonDerivative · entry 1

Ardrey J. Kelly Jr. · CIK 0001528753 · Chief Accounting Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 3,520

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $75.93 to $76.02, inclusive. The reporting person undertakes to provide to Western Alliance Bancorporation, any security holder of Western Alliance Bancorporation, or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each separate price within this range.

SEC source: 0001212545-24-000211 · wk-form4_1721258684.xml · derivative · entry 3

Herndon Lynne · CIK 0002007542 · Chief Credit Officer

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 1,067

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: 0001212545-24-000211 · wk-form4_1721258684.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: 0001212545-24-000211 · wk-form4_1721258684.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: 0001212545-24-000209 · wk-form4_1721258663.xml · derivative · entry 3

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 5,129

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: 0001212545-24-000209 · wk-form4_1721258663.xml · nonDerivative · entry 2

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,788

SEC source: 0001212545-24-000209 · wk-form4_1721258663.xml · nonDerivative · entry 1

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

10b5-1 filing: No plan indicated

Ownership: Direct

Disclosed balance after: 41,953

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.