WAL

SEC source: 0001212545-16-000459 · wf-form4a_147734218536248.xml · nonDerivative · entry 1

FROESCHLE DUANE RALPH · CIK 0001331727 · Executive Vice President

10b5-1 filing: Not disclosed

Ownership: Indirect · Duane Froeschle Revocable Trust u/a dtd 06/29/2006

Disclosed balance after: 39,853

F1 · balance_after: On April 15, 2016, the Reporting Person transferred 50,000 shares to the Duane Froeschle Revocable Trust u/a/ dtd 06/29/2006.

SEC source: 0001212545-16-000525 · wf-form4a_148071257287405.xml · nonDerivative · entry 1

BEACH BRUCE D · CIK 0001331624 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Beach Revocable Trust U/A DTD 7/27/2007

Disclosed balance after: 45,288

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $36.85 to $36.90, 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 · ownership.nature: This amendment is being filed to properly reflect the holdings from which the Reporting Person sold shares. The previous report incorrectly stated that the sale was from the Reporting Person's direct holdings, whereas the sale was actually from the holdings of the Beach Revocable Trust U/A DTD 7/27/2007.

SEC source: 0001212545-17-000140 · wf-form4a_148857703122337.xml · nonDerivative · entry 2

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · William S. Boyd Trust

Disclosed balance after: 4,049,457

F3 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.00 to $37.11, 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: This amendment is being filed to include the March 8, 2016 transfer of 5,000 shares from the Reporting Person's direct holdings to the William S. Boyd Trust, which was erroneously omitted from the original filing.

SEC source: 0001212545-17-000140 · wf-form4a_148857703122337.xml · nonDerivative · entry 1

BOYD WILLIAM S · CIK 0000940434 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · William S. Boyd Trust

Disclosed balance after: 4,053,988

F1 · price: The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $37.00 to $37.39, 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.

F2 · balance_after: This amendment is being filed to include the March 8, 2016 transfer of 5,000 shares from the Reporting Person's direct holdings to the William S. Boyd Trust, which was erroneously omitted from the original filing.

SEC source: 0001212545-16-000523 · wf-form4a_148071240886463.xml · nonDerivative · entry 1

BEACH BRUCE D · CIK 0001331624 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,500

F1 · balance_after: On November 30,2015, the Reporting Person transferred 34,191 shares from his direct holdings to the Beach Revocable Trust U/A DTD 7/27/2007. On December 29, 2015, the Reporting Person transferred 14,297 shares from his direct holdings to the Beach Revocable Trust U/A DTD 7/27/2007. This amendment is being filed to correct the date on which the December 29, 2015 transfer occurred, to properly state it as a change in form of ownership. Additionally, this amendment is being filed to reflect the November 30, 2015 transfer, which was previously erroneously excluded from this filing.

SEC source: 0001212545-18-000076 · wf-form4a_151786685320333.xml · nonDerivative · entry 1

LATTA ROBERT P · CIK 0001223581 · Director

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 4,500

F1 · balance_after: This amendment is being filed to reflect the Reporting Person's January 14, 2016 transfer of 1,080 shares from the Reporting Person's direct holdings to the Latta Family Trust UDT dated June 10, 1997.

SEC source: 0001212545-18-000072 · wf-form4_151786533231288.xml · nonDerivative · entry 1

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

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 1,688

F1 · shares: This filing reflects restricted stock grants, which were inadvertently excluded from the Reporting Person's previous Form 4 filings.

SEC source: 0001212545-17-000158 · wf-form4a_149186001441791.xml · nonDerivative · entry 1

Sarver Robert Gary · CIK 0001187511 · Director · Chairman and CEO

10b5-1 filing: Not disclosed

Ownership: Direct

Disclosed balance after: 119,448

F1 · shares: This amendment properly states the number of shares sold for taxes as having been 3,471, whereas the original filing incorrectly stated the number of shares being sold as 3,783.

F2 · balance_after: Between the dates of April 11, 2012 and June 11, 2012, the Reporting Person received grants from the Company that represented a portion of the Reporting Person's salary. One of these grants inaccurately excluded 20 shares that were received during a biweekly pay period.

F3 · balance_after: This amendment reflects the following transfers between forms of ownership, which were inadvertently excluded from the Reporting Person's previous Form 4 filings: (1) 1,625,816 shares transferred from the Reporting Person's direct holdings ("Direct Holdings") to the Robert G. Sarver Trust dated 09/29/1997 (the "Sarver Trust") on June 3, 2010; (2) 438,671 shares transferred from Direct Holdings to the Sarver Family Trust dated 09/29/1997 (the "Family Trust") on June 3, 2010; (3) 4,329 shares transferred from Direct Holdings to the Family Trust on November 23, 2010; (4) 121,662 shares transferred from Direct Holdings to the Sarver Trust on November 23, 2010; (5) 92,854 shares transferred from Direct Holdings to the Sarver Trust on October 13, 2011; and (6) 75,000 shares transferred from the Sarver Trust to the Family Trust on January 9,2012.

F4 · balance_after: This amendment reflects the transfer of 4,960 shares on March 12, 2013 from the Reporting Person's direct holdings to the Sarver Trust, and the following sales, which were reported as having been from direct holdings, but were in fact from the Sarver Trust:(1) 100,000 shares sold on October 23, 2012; (2) 50,000 shares sold on October 24 2012; (3) 35,597 shares sold on January 29, 2013; (4) 18,311 shares sold on January 30, 2013; (5) 50,000 shares sold on February 1, 2013; (6) 25,000 shares sold on February 11, 2013; (7) 25,000 shares sold on February 12, 2013; (8) 50,000 shares sold on February 13, 2013; (9) 50,000 shares sold on February 19, 2013; (10) 50,000 shares sold on April 29, 2013; (11) 50,000 shares sold on April 30, 2013; (12) 100,000 shares sold on July 22,2013; (13) 25,000 shares sold on July 23, 2013; (14) 25,000 shares sold on July 24, 2013; and (15) 83,291 shares sold on December 9, 2013; and (16) 16,709 sold on December 10, 2013.

F5 · balance_after: This amendment reflects the transfer between forms of ownership of 61,308 shares on February 25, 2015 from the Reporting Person's direct holdings to the Sarver Trust, and the following transactions, which were reported as having been from direct holdings, but were in fact from the Sarver Trust: (1) 100,000 shares sold on January 27, 2014; (2) 61,308 shares sold on February 25, 2014; (3) 50,000 shares sold on April 23, 2014; (4) 25,000 shares sold on April 24, 2014; (5) 10,000 shares sold on October 30, 2014; (6) 25,000 shares sold on November 10, 2014; (7) 50,000 shares sold on May 13, 2015; (8) 50,000 shares sold on May 14, 2015; (9) 50,000 shares sold on May 20, 2015; (10) 30,000 shares sold on May 21, 2015; (11) 20,000 shares sold on May 22, 2015; (12) 10,000 shares gifted on November 6, 2015; (13) 69,977 shares sold on November 6, 2015; (14) 50,000 shares sold on November 23, 2016; and (15) 100,000 shares sold on December 1, 2016.

F6 · balance_after: These shares represent 5,000 shares which were previously reported as having belonged directly to the Reporting Person; such shares actually belong to the Reporting Person's children, and the Reporting Person disclaims ownership of these shares.

SEC source: 0001212545-18-000126 · wf-form4_152365850592179.xml · nonDerivative · entry 1

MARSHALL TODD · CIK 0001331638 · Director

10b5-1 filing: Not disclosed

Ownership: Indirect · Art and Jayn Marshall Trust DTD 7/2/1973

Disclosed balance after: 31,000

F1 · balance_after: On December 21, 2011, the Art and Jayn Marshall Trust DTD 7/2/1973 (the "Art and Jayn Trust") received 31,000 shares from the Arthur Trust DTD 7/2/1973 (the "Arthur Trust"). Because the Reporting Person was a trustee of the Art and Jayn Trust, and not a trustee of the Arthur Trust, the transfer was a gift that should have been included in the Reporting Person's Form 4 filings.