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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	2010-02-23	15,462	$41.55	258,836	No	4	S	Indirect	By IRA
Common Stock	Disposition	2010-02-24	8,538	$41.87	250,298	No	4	S	Indirect	By IRA

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

Reported Non-Derivative Holdings

Sec. Name	Remaning Holdings	Nature of Ownership	Explanation
Common Stock	11,870	Direct
Common Stock	59,539	Indirect	By Special Trust
Common Stock	3,146	Indirect	By spouse

Footnotes

Includes 3,127 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
Includes 109 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
Includes 686 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.
Includes 22 shares acquired through the Prosperity Bancshares, Inc. dividend reinvestment plan since the last filing by the reporting person.