David Zalman, CEO of Prosperity Bancshares, Inc.,
Rings The NASDAQ Stock Market Opening Bell

Monday October 2, 2006
at NASDAQ's MarketSite
in New York City.

Prosperity Bancshares, Inc.
[PRSP]

David Zalman, CEO of Prosperity Bancshares, Inc. presides over the opening bell.
Prosperity Bancshares(r), a $4.6 billion Houston, Texas based regional financial holding company, formed in 1983, was named to the Keefe Bruyette & Woods, Inc. 2006 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 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 currently operates eighty-eight (88) full service banking locations, thirty-eight (38) in the Houston CMSA; fifteen (15) in the Corpus Christi area; eleven (11) in the Dallas area; five (5) in the Austin area; two (2) in the East Texas area; and seventeen (17) in fifteen contiguous counties south and southwest of Houston generally along the NAFTA highway.

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