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Filing Details

Issuer

Cik	Name	Symbol	Sector (SIC)	IRS No
1068851	Prosperity Bancshares Inc	PRSP	State Commercial Banks (6022)	742331986

Insiders

Cik	Name	Reported Address	Insider Title	Director	Officer	Large Shareholder	Other
1213460	Jr Perry Mueller	203 That Way Lake Jackson TX 77566		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	Disposition	2011-12-05	25,000	$40.06	232,518	No	4	S	Indirect	By IRA

Equity Swap Involved	Form Type	Code	Nature of Ownership	Explanation
No	4	S	Indirect	By IRA

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	13,766	Direct
Common Stock	61,289	Indirect	By Special Trust
Common Stock	3,203	Indirect	By spouse

Footnotes

Includes 2,205 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
Includes 91 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
Includes 534 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
Includes 17 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
The price reported in Column 4 is a weighted average price. These shares were sold in multiple transactions at prices ranging from $40.00 to $40.40 inclusive. The reporting person undertakes to provide Prosperity Bancshares, Inc., any security holder of Prosperity Bancshares, Inc., or the staff of the Securities and Exchange Commission, upon request, full information regarding the number of shares sold at each seperate price within the ranges set forth in this footnote.