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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1212545	Western Alliance Bancorporation	WAL	State Commercial Banks (6022)	000000000

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1186742	Boyd Marianne Johnson			Yes	No	No	No

Reported Non-Derivative Transactions

Sec. Name	Acquisiton - Disposition	Date	Amount	Price	Remaning Holdings	Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
Common Stock	Acquisiton	2012-09-14	3,000	$7.03	19,652	No	4	M	Direct
Common Stock	Disposition	2012-09-14	8,364	$9.70	11,288	No	4	S	Direct
Common Stock	Disposition	2012-09-14	23,256	$9.71	286,701	No	4	S	Indirect	The Marianne E. Boyd Trust, dated January 9, 2007
Common Stock	Acquisiton	2012-09-17	14,066	$0.00	300,767	No	4	J	Indirect	The Marianne E. Boyd Trust, dated January 9, 2007

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	M	Direct
No	4	S	Direct
No	4	S	Indirect	The Marianne E. Boyd Trust, dated January 9, 2007
No	4	J	Indirect	The Marianne E. Boyd Trust, dated January 9, 2007

Reported Derivative Transactions

Sec. Name	Sec. Type	Acquisiton - Disposition	Date	Amount	Price	Amount - 2	Price - 2
Common Stock	Common Stock	Disposition	2012-09-14	3,000	$0.00	3,000	$7.03

Remaning Holdings	Exercise Date	Expiration Date	Equity Swap Involved	Transaction Form Type	Transaction Code	Nature of Ownership
0	2007-12-18	2012-12-18	No	4	M	Direct

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	257,143	Indirect	The Boyd 2005 Irrevocable Trust, dated April 14, 2005
Common Stock	184,796	Indirect	BG-05 Limited Partnership
Common Stock	14,612	Indirect	The William and Myong Boyd Children's Trust

Footnotes

The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.63 to $9.79, 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.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $9.6214 to $9.79, 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.
On September 17, 2012, WAL-10, LLC, of which reporting person has no investment or voting control, transferred 14,066 shares to The Marianne E. Boyd Trust, dated January 9, 2007.