HOUSTON, Feb. 26 /PRNewswire-FirstCall/ -- Prosperity Bancshares, Inc.(R), the parent company of Prosperity Bank(R) will be presenting at the Keefe Bruyette & Woods Regional Bank Conference in Boston on Wednesday, February 27, 2008 at 11:10 am Eastern Standard Time (10:10 am Central Standard Time). Dan Rollins, President and Chief Operating Officer; and Chris Bagley, Chief Credit Officer will be presenting for the company. The presentation will be approximately 20 minutes followed by a 15 minute question and answer period. Management will be discussing highlights of the company's financial performance, operating results, corporate strategies, and economic environment. A live audio of the presentation will be simultaneously webcast and will be accessible http://www.kbw.com/news/conference_regional.html. The presentation will be archived for 60 days after the presentation. A link to the webcast will also be available on Prosperity's website at http://www.prosperitybanktx.com/. Prosperity Bancshares, Inc.(R) Prosperity Bancshares, Inc.(R), a $6.4 billion Houston, Texas based regional financial holding company, formed in 1983, was named to the Keefe Bruyette & Woods, Inc. 2007 Honor Roll for achieving exceptional earnings per share growth for the past 10 years. Other recent honors include being named to the Sandler O'Neill & Partners 2005 Bank and Thrift Small All Stars, listed in US Banker's August 2005 Top 100 Publicly Traded Mid-Tier Banks, ranked #2 out of 195 publicly traded companies in the 2005 Stephens, Inc. Bank and Thrift Performance Matrix and listed on the Houston Chronicle's Houston 100 list. Operating under a community banking philosophy, Prosperity seeks to develop broad customer relationships based on service and convenience. Prosperity offers a variety of traditional loan and deposit products to its customers, which consist primarily of small and medium sized businesses and consumers. In addition to established banking products, Prosperity offers a complete line of services including: Internet Banking services at http://www.prosperitybanktx.com/, Retail Brokerage Services, MasterMoney Debit Cards, and 24 hour voice response banking. Prosperity currently operates one hundred thirty (130) full service banking locations and one (1) loan production office; forty-six (46) in the Houston CMSA; thirty-three (33) in the South Texas area including Corpus Christi and Victoria; twenty-six (26) in the Dallas/Fort Worth metroplex; two (2) in the East Texas area; twenty- three (23) in the Central Texas area including Austin, San Antonio and Bryan/College Station. "Safe Harbor" Statement under the Private Securities Litigation Reform Act of 1995: This release contains, and the remarks by our management on the conference call may contain, forward-looking statements within the meaning of the securities laws that are based on current expectations, assumptions' estimates and projections about Prosperity Bancshares(R), and its subsidiaries. These forward-looking statements are not guarantees of future performance and are subject to risks and uncertainties, many of which are outside of Prosperity's control, that may cause actual results to differ materially from those expressed or implied by the forward-looking statements. These risks and uncertainties include but are not limited to the risk that the businesses of Prosperity and Texas United will not be integrated successfully or such integration may be more difficult, time-consuming or costly than expected; expected revenue synergies and cost savings from the merger may not be fully realized or realized within the expected time frame; revenues following the merger may be lower than expected; deposit attrition, operating costs, customer loss and business disruption following the merger, including, without limitation, difficulties in maintaining relationships with employees, may be greater than expected; the ability to obtain regulatory approvals of the merger on the proposed terms and schedule; the failure of Prosperity's or Texas United's shareholders to approve the merger agreement; continue to provide products and services that appeal to our customers; access to debt and equity capital markets we may be limited or not available; and our sales objectives may not be achieved. Other risks include the possibility that credit quality could deteriorate; actions of competitors; changes in laws and regulations (including changes in governmental interpretations of regulations and changes in accounting standards); customer and consumer demand, including customer and consumer response to marketing; effectiveness of spending, investments or programs; fluctuations in the cost and availability of supply chain resources; economic conditions, including currency rate fluctuations and interest rate fluctuations; weather; and the stock price volatility associated with "small-cap" companies. These and various other factors are discussed in our most recent Annual Report on Form 10-K and other reports and statements we have filed with the SEC. Copies of Prosperity Bancshares's(R) SEC filings may be downloaded from the Internet at no charge from http://www.prosperitybanktx.com/. DATASOURCE: Prosperity Bancshares, Inc. CONTACT: Dan Rollins, President and Chief Operating Officer of Prosperity Bancshares, Inc.(R), +1-281-269-7199, Web site: http://www.prosperitybanktx.com/

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