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<font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 12pt; FONT-FAMILY: Times New Roman">UNITED STATES</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">CURRENT REPORT</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Date of Report (Date of earliest event reported):&#160;&#160;<font style="DISPLAY: inline; FONT-WEIGHT: bold">October 21, 2011</font></font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="center"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">4295 San Felipe</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Check the appropriate box below if the Form&#160;8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Written communications pursuant to Rule&#160;425 under the Securities Act (17 CFR 230.425)</font></div>
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<div style="MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Item 2.02</font></div>
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<div align="justify"><font style="DISPLAY: inline; FONT-WEIGHT: bold; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Results of Operations and Financial Condition.</font></div>
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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">On October 21, 2011, Prosperity Bancshares, Inc. publicly disseminated a press release announcing its financial results for the third quarter ending September 30, 2011.&#160;&#160;A copy of the press release is furnished as Exhibit 99.1 hereto and incorporated herein by reference.</font></div>

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<div style="DISPLAY: block; MARGIN-LEFT: 0pt; TEXT-INDENT: 0pt; MARGIN-RIGHT: 0pt" align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">As provided in General Instruction B.2 to Form 8-K, the information furnished in Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, and such information shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.</font></div>

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<div align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Press Release issued by Prosperity Bancshares, Inc. dated October 21, 2011.</font></div>
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<div align="justify"><font style="DISPLAY: inline; FONT-SIZE: 10pt; FONT-FAMILY: Times New Roman">Press Release issued by Prosperity Bancshares, Inc. dated October 21, 2011.</font></div>
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[{"type": "8-K", "sequence": "1", "filename": "v237767_8k.htm", "description": "FORM 8-K", "secsgml_size_bytes": 28420}]
{"company-data": {"conformed-name": "PROSPERITY BANCSHARES INC", "cik": "0001068851", "assigned-sic": "6022", "irs-number": "742331986", "state-of-incorporation": "TX", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "8-K", "act": "34", "file-number": "000-25051", "film-number": "111151154"}, "business-address": {"street1": "4295 SAN FELIPE", "street2": "N/A", "city": "HOUSTON", "state": "TX", "zip": "77027", "phone": "7136939300"}, "mail-address": {"street1": "4295 SAN FELIPE", "city": "HOUSTON", "state": "TX", "zip": "77027"}}
Unassociated Document
UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
WASHINGTON, D.C. 20549
FORM 8-K
CURRENT REPORT
PURSUANT TO SECTION 13 OR 15(d) OF
THE SECURITIES EXCHANGE ACT OF 1934
Date of Report (Date of earliest event reported):
October 21, 2011
PROSPERITY BANCSHARES, INC.
(Exact name of registrant as specified in its charter)
Texas
0-25051
74-2331986
(State or other jurisdiction of incorporation)
(Commission File Number)
(IRS Employer Identification No.)
4295 San Felipe
Houston, Texas 77027
(Address of principal executive offices including zip code)
Registrant's telephone number, including area code:
(281) 269-7199
Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):
o
Written communications pursuant to Rule 425 under the Securities Act (17 CFR 230.425)
o
Soliciting
material
pursuant to Rule 14a-12 under the Exchange Act (17 CFR 240.14a-12)
o
Pre-
commencement
communications pursuant to Rule 14d-2(b) under the Exchange Act (17 CFR 240.14d-2(b))
o
Pre-
commencement
communications pursuant to Rule 13e-4(c) under the Exchange Act (17 CFR 240.13e-4(c))
Item 2.02
Results of Operations and Financial Condition.
On October 21, 2011, Prosperity Bancshares, Inc. publicly disseminated a press release announcing its financial results for the third quarter ending September 30, 2011.  A copy of the press release is furnished as Exhibit 99.1 hereto and incorporated herein by reference.
As provided in General Instruction B.2 to Form 8-K, the information furnished in Item 2.02 and Exhibit 99.1 of this Current Report on Form 8-K shall not be deemed "filed" for purposes of Section 18 of the Securities Exchange Act of 1934, as amended (the "Exchange Act"), or otherwise subject to the liabilities of that section, and such information shall not be deemed incorporated by reference in any filing under the Securities Act of 1933, as amended, or the Exchange Act, except as shall be expressly set forth by specific reference in such filing.
Item 9.01
Financial Statements and Exhibits.
(d)
Exhibits
.  The following is furnished as an exhibit to this Current Report on Form 8-K:
Exhibit
Number
Description of Exhibit
99.1
Press Release issued by Prosperity Bancshares, Inc. dated October 21, 2011.
SIGNATURES
Pursuant to the requirements of the Securities Exchange Act of 1934, the registrant has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.
PROSPERITY BANCSHARES, INC.
(Registrant)
Dated:  October 21, 2011
By:
/s/
James D. Rollins III
James D. Rollins III
President and Chief Operating Officer
EXHIBIT INDEX
Exhibit
Number
Description of Exhibit
99.1
Press Release issued by Prosperity Bancshares, Inc. dated October 21, 2011.