FORM 10-Q

                                  UNITED STATES

                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

(Mark One)

[X]             QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
                FOR THE QUARTERLY PERIOD ENDED SEPTEMBER 30, 2002

                                       OR

[ ]            TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
             FOR THE TRANSITION PERIOD FROM____________TO___________

                        COMMISSION FILE NUMBER: 000-25051

                         PROSPERITY BANCSHARES, INC./SM/
             (Exact name of registrant as specified in its charter)

                     TEXAS                                  74-2331986
(State or other jurisdiction of incorporation            (I.R.S. Employer
               or organization)                         Identification No.)

                                 4295 San Felipe
                              Houston, Texas 77027
          (Address of principal executive offices, including zip code)

                                 (713) 693-9300
              (Registrant's telephone number, including area code)

Indicate by check mark whether the registrant (1) has filed all reports required
to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during
the preceding 12 months (or for such shorter period that the registrant was
required to file such reports), and (2) has been subject to such filing
requirements for the past 90 days.

Yes [X]  No [ ]

As of November 1, 2002, there were 18,885,872 shares of the registrant's Common
Stock, par value $1.00 per share, outstanding.



PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
INDEX TO FORM 10-Q

PART I - FINANCIAL INFORMATION                                             Page

Item 1.  Interim Financial Statements ....................................    3
         Consolidated Balance Sheets as of September 30, 2002 (unaudited)
          and December 31, 2001 ..........................................    3
         Consolidated Statements of Income for the Three and Nine Months
          Ended September 30, 2002 and 2001 (unaudited) ..................    4
         Consolidated Statements of Shareholders' Equity for the Year
          Ended December 31 2001 and for the Nine Months Ended
          September 30, 2002 (unaudited) .................................    5
         Consolidated Statements of Cash Flows for the Nine Months Ended
          September 30, 2002 and 2001 (unaudited) ........................    6
         Notes to Interim Consolidated Financial Statements ..............    7

Item 2.  Management's Discussion and Analysis of Financial Condition and
          Results of Operations ..........................................    9
Item 3.  Quantitative and Qualitative Disclosures about Market Risk ......   20
Item 4.  Controls and Procedures .........................................   20

PART II - OTHER INFORMATION

Item 1.  Legal Proceedings ...............................................   20
Item 2.  Changes in Securities and Use of Proceeds .......................   21
Item 3.  Defaults upon Senior Securities .................................   21
Item 4.  Submission of Matters to a Vote of Security Holders .............   21
Item 5.  Other Information ...............................................   21
Item 6.  Exhibits and Reports on Form 8-K ................................   21
Signatures ...............................................................   22


                                       2



                         PART I - FINANCIAL INFORMATION
                      ITEM 1. INTERIM FINANCIAL STATEMENTS

                PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
                           CONSOLIDATED BALANCE SHEETS



                                                            September 30,             December 31,
                                                                2002                      2001
                                                            -------------             ------------
                                                             (unaudited)
                                                          (Dollars in thousands, except share data)
                                                                               
                       ASSETS

Cash and due from banks .................................    $   50,242              $   41,005
Federal funds sold ......................................         5,501                     715
                                                             ----------              ----------
    Total cash and cash equivalents .....................        55,743                  41,720
Interest-bearing deposits in financial institutions .....           895                     198
Available for sale securities, at fair value (amortized
 cost of $271,104 (unaudited) and $481,899,
 respectively) ..........................................       275,221                 482,233
Held to maturity securities, at cost (fair value of
 $629,063 (unaudited) and $274,227, respectively) .......       610,338                 270,089
Loans ...................................................       647,715                 424,400
Less allowance for credit losses ........................        (8,173)                 (5,985)
                                                             ----------              ----------
              Loans, net ................................       639,542                 418,415
Accrued interest receivable .............................        10,260                   8,466
Goodwill (net of accumulated amortization of $6,354
 (unaudited) and $6,354, respectively) ..................        62,461                  22,641
Core Deposit Intangibles (net of accumulated amortization
 of $30 and $0) .........................................           668                      --
Bank premises and equipment, net ........................        23,847                  15,077
Other real estate owned .................................           587                      --
Other assets ............................................        10,547                   3,486
                                                             ----------              ----------
TOTAL ASSETS ............................................    $1,690,109              $1,262,325
                                                             ==========              ==========
   LIABILITIES AND SHAREHOLDERS' EQUITY
LIABILITIES:
   Deposits:
       Noninterest-bearing ..............................    $  303,612              $  188,832
       Interest-bearing..................................     1,163,947                 934,565
                                                             ----------              ----------
              Total deposits ............................     1,467,559               1,123,397
   Other borrowings .....................................        28,309                  18,080
   Accrued interest payable .............................         2,385                   2,869
   Other liabilities.....................................         9,284                   2,254
                                                             ----------              ----------
              Total liabilities .........................     1,507,537               1,146,600
COMPANY-OBLIGATED MANDATORILY REDEEMABLE
    TRUST PREFERRED SECURITIES OF SUBSIDIARY TRUSTS .....        33,000                  27,000
SHAREHOLDERS' EQUITY:
   Common stock, $1.00 par value; 50,000,000 shares
    authorized; 18,893,024 (unaudited) and 16,218,022,
    shares issued at September 30, 2002 and
    December 31, 2001, respectively; 18,885,872
    (unaudited) and 16,210,870 shares outstanding at
    September 30, 2002 and December 31, 2001,
    respectively ........................................        18,893                  16,218
   Capital surplus.......................................        60,273                  16,865
   Retained earnings.....................................        67,575                  55,462
   Accumulated other comprehensive income -- net
    unrealized gain on available for sale securities,
    net of  tax of $1,544 (unaudited) and $117,
    respectively ........................................         2,868                     217
   Less treasury stock, at cost, 7,152 shares at
    September 30, 2002 (unaudited) and
    December 31, 2001 ...................................           (37)                    (37)
                                                             ----------              ----------
              Total shareholders' equity ................       149,572                  88,725
                                                             ----------              ----------
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY ..............    $1,690,109              $1,262,325
                                                             ==========              ==========


             See notes to interim consolidated financial statements.


                                       3



                PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
                        CONSOLIDATED STATEMENTS OF INCOME
                                  (UNAUDITED)




                                                          Three Months Ended               Nine Months Ended
                                                             September 30,                    September 30,
                                                     ---------------------------        ------------------------
                                                         2002            2001              2002           2001
                                                     -----------       ---------        ---------       --------
                                                              (Dollars in thousands, except per share data)
                                                                                            
     INTEREST INCOME:
     Loans, including fees .......................   $   9,828         $   8,839        $  25,945       $ 26,578
     Securities:
      Taxable. ...................................       9,792             9,243           29,685         27,436
      Nontaxable .................................         453               401            1,221          1,190
      70% nontaxable preferred dividends .........         263               344              879            999
     Deposits in financial institutions ..........          14                 6               14             28
     Federal funds sold. .........................          69               268              161          1,333
                                                     ---------         ---------        ---------       --------
       Total interest income. ....................      20,419            19,101           57,905         57,564
                                                     ---------         ---------        ---------       --------
     INTEREST EXPENSE:
       Deposits. .................................       6,245             8,773           18,434         27,624
       Note payable and federal funds sold .......         219                68              669            643
                                                     ---------         ---------        ---------       --------
         Total interest expense ..................       6,464             8,841           19,103         28,267
                                                     ---------         ---------        ---------       --------
         NET INTEREST INCOME .....................      13,955            10,260           38,802         29,297
     PROVISION FOR CREDIT LOSSES .................         120                50              360             50
                                                     ---------         ---------        ---------       --------
     NET INTEREST INCOME AFTER
        PROVISION FOR CREDIT LOSSES ..............      13,835            10,210           38,442         29,247
                                                     ---------         ---------        ---------       --------
     NONINTEREST INCOME:
       Customer service fees .....................       2,632             1,924            6,491          5,501
       Other .....................................         261               263              889            779
                                                     ---------         ---------        ---------       --------
        Total noninterest income .................       2,893             2,187            7,380          6,280
                                                      --------         ---------        ---------       --------
     NONINTEREST EXPENSE:
       Salaries and employee benefits ............       3,954             3,247           11,268          9,759
       Net occupancy expense .....................         619               493            1,614          1,483
       Data processing ...........................         532               526            1,495          1,551
       Core deposit intangible and goodwill
        amortization .............................          26               341               30          1,022
       Depreciation expense ......................         459               385            1,230          1,183
       Minority interest trust preferred
        securities ...............................         524               475            1,518          1,051
       Merger related expenses ...................          --                --               --          2,425
       Other .....................................       2,392             1,601            7,138          4,460
                                                     ---------         ---------        ---------       --------
        Total noninterest expense ................       8,506             7,068           24,293         22,934
                                                     ---------         ---------        ---------       --------
     INCOME BEFORE INCOME TAXES ..................       8,222             5,329           21,529         12,593
     PROVISION FOR INCOME TAXES ..................       2,569             1,598            6,590          3,625
                                                     ---------         ---------        ---------       --------
     NET INCOME ..................................   $   5,653         $   3,731        $  14,939       $  8,968
                                                     =========         =========        =========       ========
     EARNINGS PER SHARE
     Basic .......................................   $    0.33         $    0.23        $    0.90       $   0.56
                                                     =========         =========        =========       ========
     Diluted .....................................   $    0.32         $    0.23        $    0.89       $   0.55
                                                     =========         =========        =========       ========


             See notes to interim consolidated financial statements.


                                       4



                PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
                 CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY



                                                                                          Accumulated
                                                                                             Other
                                                                                          Comprehensive
                                                                                          Income -- Net
                                                                                         Unrealized Gain
                                                  Common Stock                           (Loss) on Avail-               Total
                                               -------------------    Capital   Retained  able for Sale    Treasury  Shareholders'
                                                Shares      Amount    Surplus   Earnings   Securities       Stock       Equity
                                               --------   --------    -------   --------  --------------   --------  -------------
                                                              (Amounts in thousands, except share data)

                                                                                                
BALANCE AT JANUARY 1, 2001 .................   16,150,972 $ 16,151   $ 17,949   $ 45,665    $     605     $     (37)   $   80,333

Net income .................................                                      12,958                                   12,958
     Net change in unrealized gain on
       available for sale securities .......                                                     (388)                       (388)
                                                                                                                       ----------
     Total comprehensive income ............                                                                               12,570
                                                                                                                       ----------
     Cash paid to dissenting shareholders
       in connection with the issuance of
       common stock in exchange for common
       stock of Commercial Bancshares, Inc..      (63,550)     (64)      (783)                                               (847)
       Trust preferred issuance costs ......                             (476)                                               (476)
     Sale of common stock ..................      130,600      131        175                                                 306
     Cash dividends declared ...............                                      (3,161)                                  (3,161)
                                               ---------- --------   --------   --------    ---------     ---------    ----------
BALANCE AT DECEMBER 31, 2001 ...............   16,218,022 $ 16,218   $ 16,865   $ 55,462    $     217     $     (37)   $   88,725

     Net income (unaudited) ................                                      14,939                                   14,939
     Net change in unrealized gain  on
       available for sale securities
       (unaudited) .........................                                                    2,651                       2,651
                                                                                                                       ----------
     Total comprehensive income (unaudited).                                                                               17,590
                                                                                                                       ----------
     Shares issued in connection with the
       Paradigm Acquisition ................    2,580,502    2,580     43,294                                              45,874
     Sale of common stock (unaudited) ......       94,500       95        117                                                 212
     Cash paid in lieu of fractional
       shares for the Paradigm Acquisition .                               (3)                                                 (3)
       Cash dividends declared (unaudited) .                                      (2,826)                                  (2,826)
                                               ---------- --------   --------   ---------   ---------     ---------    ----------
BALANCE AT SEPTEMBER 30, 2002
     (unaudited) ...........................   18,893,024 $ 18,893   $ 60,273   $ 67,575    $   2,868     $     (37)   $  149,572
                                               ========== ========   ========   ========    =========     =========    ==========


             See notes to interim consolidated financial statements.


                                       5



                PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
                      CONSOLIDATED STATEMENTS OF CASH FLOWS
                                   (UNAUDITED)




                                                                     Nine Months Ended
                                                                      September 30,
                                                              ----------------------------
                                                                 2002              2001
                                                              -----------       ----------
                                                                  (Dollars in thousands)
                                                                          
CASH FLOWS FROM OPERATING ACTIVITIES:
   Net income ..............................................   $   14,939       $    8,968
   Adjustments to reconcile net income
     to net cash provided by operating activities:
     Depreciation and amortization .........................        1,260            2,205
     Provision for credit losses ...........................          360               50
     Loss on sale of premises and equipment ................            4              341
     Gain on  sale of other real estate ....................          (81)              --
     Net amortization of premium/discount
       on  investments .....................................        2,566              465
     (Increase) decrease in accrued interest receivable
       and  other assets ...................................       (2,081)           1,216
     (Decrease) increase in accrued interest payable
       and other liabilities ...............................         (295)           2,940
                                                              -----------       ----------
       Total adjustments ...................................        1,733            7,217
                                                              -----------       ----------
       Net cash provided by operating activities ...........       16,672           16,185
                                                              -----------       ----------
CASH FLOWS FROM INVESTING ACTIVITIES:
   Proceeds from maturities and principal
     paydowns of held to maturity securities ...............      110,013          155,482
   Purchase of held to maturity securities .................     (177,942)         (16,067)
   Proceeds from maturities and principal
     paydowns of available for sale securities .............       69,293           66,883
   Purchase of available for sale securities ...............      (74,475)        (340,067)
   Net increase in loans ...................................        3,268           (8,354)
   Purchase of bank premises and equipment .................       (1,110)          (2,087)
   Proceeds from sale of  bank premises and equipment
       and other real estate acquired by foreclosure .......          861              557
   Premium paid for the purchase of Texas Guaranty
       Bank N.A. ...........................................       (3,318)              --
   Net liabilities acquired in the purchase of Texas
       Guaranty Bank, N.A. (net of cash of $12,723) ........        3,815               --
   Premium paid for the purchase of The First State
       Bank of Needville ...................................       (1,686)              --
   Net liabilities acquired in the purchase of The First
       State Bank of Needville (net of cash
       of $4,938) ..........................................        2,859               --
   Premium paid for the purchase of Paradigm
       Bancorporation ......................................      (35,218)              --
   Net liabilities acquired in the purchase of Paradigm
       Bancorporation (net of cash of $14,447) .............       49,223               --
                                                              -----------       ----------
     Net cash used in investing activities .................      (54,417)        (143,653)
                                                              -----------        ---------
CASH FLOWS FROM FINANCING ACTIVITIES:
   Net increase (decrease) in noninterest-bearing
     deposits ..............................................       14,143           (5,612)
   Net increase in interest-bearing deposits ...............       35,813           63,727
   Extensions (repayments) of line of credit ...............        4,429             (466)
   Cash paid to dissenting shareholders ....................           --             (847)
   Proceeds from the issuance of trust preferred
     securities ............................................           --           15,000
   Cash paid in lieu of fractional shares for the
     Paradigm acquisition ..................................           (3)              --
   Stock issuance costs ....................................           --             (476)
   Payments of cash dividends ..............................       (2,826)          (2,350)
   Sale of common stock ....................................          212              278
                                                              -----------       ----------
       Net cash  provided by
          financing activities .............................       51,768           69,254
                                                              -----------       ----------
NET INCREASE (DECREASE) OF CASH AND
   CASH EQUIVALENTS. .......................................  $    14,023       $  (58,214)
CASH AND CASH EQUIVALENTS, BEGINNING
   OF PERIOD ...............................................       41,720           99,163
                                                              -----------       ----------
CASH AND CASH EQUIVALENTS, END OF
   PERIOD. .................................................  $    55,743       $   40,949
                                                              ===========       ==========



                  See notes to interim consolidated statements.


                                       6



                PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
               NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS
                               SEPTEMBER 30, 2002
                    (IN THOUSANDS, EXCEPT PER SHARE AMOUNTS)
                                   (UNAUDITED)

1.  BASIS OF PRESENTATION

     The interim consolidated financial statements include the accounts of
Prosperity Bancshares, Inc.(SM) (the "Company") and its wholly-owned
subsidiaries, Prosperity Bank(SM) (the "Bank") and Prosperity Holdings, Inc. On
May 31, 2002, Prosperity completed a two-for-one stock split effected in the
form of a 100 percent stock dividend. All prior period per share and share data
have been restated to reflect this split. All significant inter-company
transactions and balances have been eliminated.

     The accompanying unaudited interim consolidated financial statements have
been prepared in accordance with generally accepted accounting principles for
interim financial information and with the rules and regulations of the
Securities and Exchange Commission. Accordingly, they do not include all of the
information and footnotes required by generally accepted accounting principles
for complete financial statements. In the opinion of management, the statements
reflect all adjustments necessary for a fair presentation of the financial
position, results of operations and cash flows of the Company on a consolidated
basis, and all such adjustments are of a normal recurring nature. These
financial statements and the notes thereto should be read in conjunction with
the Company's Annual Report on Form 10-K for the year ended December 31, 2001.
Operating results for the nine month period ended September 30, 2002 are not
necessarily indicative of the results that may be expected for the year ending
December 31, 2002.

2.  INCOME PER COMMON SHARE

     The following table illustrates the computation of basic and diluted
earnings per share (in thousands, except per share data):



                                                             Three Months Ended            Nine Months Ended
                                                                September 30,                September 30,
                                                          ------------------------    --------------------------
                                                            2002           2001         2002            2001
                                                          --------       ---------    ---------      ---------
                                                                                         
Net income available to common shareholders               $  5,653       $   3,731    $  14,939      $   8,968

   Weighted average common shares outstanding               17,097          16,194       16,526         16,162
   Potential dilutive common shares                            324             332          326            324
                                                          --------       ---------    ---------      ---------
   Weighted average common shares and equivalents
        outstanding                                         17,421          16,526       16,852         16,486
                                                          --------       ---------    ---------      ---------
   Basic earnings per common share                        $   0.33       $    0.23    $    0.90      $    0.56
                                                          ========       =========    =========      =========
   Diluted earnings per common share                      $   0.32       $    0.23    $    0.89      $    0.55
                                                          ========       =========    =========      =========




                                       7



                PROSPERITY BANCSHARES, INC.(SM) AND SUBSIDIARIES
        NOTES TO INTERIM CONSOLIDATED FINANCIAL STATEMENTS - (CONTINUED)
                               SEPTEMBER 30, 2002
                             (DOLLARS IN THOUSANDS)
                                   (UNAUDITED)

3. RECENT ACCOUNTING STANDARDS

     In July 2001, the Financial Accounting Standards Board issued Statement of
Financial Accounting Standards No. 142 (SFAS 142), Goodwill and Other Intangible
Assets, which addresses the accounting for goodwill and other intangible assets.
SFAS 142 specifies that, among other things, intangible assets with an
indefinite useful life and goodwill will no longer be amortized. The standard
requires goodwill to be periodically tested for impairment and written down to
fair value if considered impaired. The provisions of SFAS 142 were effective for
fiscal years beginning after December 15, 2001.

     In July 2001, FASB issued SFAS 143, Accounting for Asset Retirement
Obligations. The statement requires entities to record the fair value of a
liability for an asset retirement obligation in the period in which it is
incurred. When the liability is initially recorded, the entity capitalizes a
cost by increasing the carrying amount of the related long-lived asset. Over
time, the liability is accreted to its present value each period, and the
capitalized cost is depreciated over the useful life of the related asset. Upon
settlement of the liability, an entity either settles the obligation for its
recorded amount or incurs a gain or loss upon settlement. The standard is
effective for fiscal years beginning after September 15, 2002, with earlier
application encouraged. Management does not believe the adoption of this
statement will have a material impact on the Company's financial position or
results of operations.

     In August 2001, the FASB issued SFAS 144, Accounting for Impairment or
Disposal of Long-lived Assets. SFAS 144 addresses financial accounting and
reporting for the impairment of long-lived assets and for long-lived assets to
be disposed of. It supersedes, with exceptions, SFAS 121, Accounting for the
Impairment of Long-lived Assets and Long-lived Assets to be Disposed Of, and was
effective for fiscal years beginning after December 15, 2001. Management
believes the adoption of this statement did not have a material impact on the
Company's financial position or results of operations.

     In October 2002, the FASB issued SFAS 147, Acquisitions of Certain
Financial Institutions ("SFAS 147"). SFAS 147 provides guidance on the
accounting for the acquisition of a financial institution, except transactions
between two or more mutual enterprises. The Company's management does not
believe that the implementation of this standard will have a material impact on
the Company's financial position or results of operations.

4. RECENT MERGER ACTIVITY

     On November 1, 2002, the Company completed the acquisition of First
National Bank of Bay City, Bay City, Texas ("FNB"), through the merger of FNB
with and into Prosperity Bank. Under the terms of the Agreement and Plan of
Reorganization dated as of August 15, 2002, as amended, the Company paid
approximately $5.1 million in cash for all of the issued and outstanding common
stock of FNB. FNB was privately held and operated one (1) location in Bay City,
Texas, which was closed and consolidated with Prosperity Bank's Bay City banking
center. As of September 30, 2002, FNB had total assets of $27.1 million, total
loans of $8.3 million, total deposits of $23.2 million and shareholders' equity
of $3.6 million.

     On October 1, 2002, the Company completed the acquisition of Southwest Bank
Holding Company, Dallas, Texas ("Southwest"). Southwest's wholly owned
subsidiary, Bank of the Southwest, Dallas, Texas, became a subsidiary of the
Company. Under the terms of the Agreement and Plan of Merger dated as of July
14, 2002, the Company paid approximately $19.6 million in cash. Bank of the
Southwest was privately held and operated two (2) banking offices in Dallas,
Texas. As of September 30, 2002, Southwest had total assets of $121.9 million,
total loans of $58.7 million, total deposits of $108.9 million and shareholders'
equity of $12.6 million.

     On September 1, 2002, the Company completed the acquisition of Paradigm
Bancorporation, Inc. ("Paradigm") in a stock transaction. Under terms of the
Agreement and Plan of Reorganization dated as of May 2, 2002, Prosperity issued
approximately 2.58 million shares of its common stock for all outstanding shares
of Paradigm (giving effect to the two for one stock split). Paradigm operated a
total of eleven (11) banking offices - six (6) in the greater metropolitan
Houston area and five (5) in the nearby Southeast Texas cities of Dayton,
Galveston, Mont Belvieu, and Winnie. As of September 1, 2002, Paradigm
Bancorporation had total assets of $248.7 million, total loans of $175.7
million, total deposits of $218.3 million and shareholders' equity of $17.0
million.


                                       8



     On July 12, 2002, the Company completed the acquisition of The First State
Bank, Needville, Texas ("First State") for approximately $3.7 million in cash.
Prosperity Bank's existing Needville Banking Center has relocated into the
former First State Bank location effective July 15, 2002. As of July 12, 2002,
The First State Bank had total assets of $16.3 million, loans of $5.5 million,
deposits of $14.1 million and shareholders' equity of $2.1 million.

     On May 8, 2002, the Company completed the acquisition of Texas Guaranty
Bank, N.A. ("Texas Guaranty") for approximately $11.8 million in cash. Texas
Guaranty Bank operated three offices in Houston, Texas, all of which became full
service banking centers of Prosperity Bank. As of May 8, 2002, Texas Guaranty
Bank had total assets of $74.0 million, loans of $45.7 million, deposits of
$61.8 million and shareholders' equity of $8.6 million.

ITEM 2. MANAGEMENT'S DISCUSSION AND ANALYSIS OF FINANCIAL CONDITION AND RESULTS
        OF OPERATIONS

         Special Cautionary Notice Regarding Forward-Looking Statements

     Statements and financial discussion and analysis contained in the Form 10-Q
that are not historical facts are forward-looking statements made pursuant to
the safe harbor provisions of the Private Securities Litigation Reform Act of
1995. Forward-looking statements are based on assumptions and involve a number
of risks and uncertainties, many of which are beyond the Company's control. The
important factors that could cause actual results to differ materially from the
forward-looking statements include, without limitation:

o    changes in interest rates and market prices, which could reduce the
     Company's net interest margins, asset valuations and expense expectations;

o    changes in the levels of loan prepayments and the resulting effects on the
     value of the Company's loan portfolio;

o    changes in local economic and business conditions which adversely affect
     the Company's customers and their ability to transact profitable business
     with the company, including the ability of the Company's borrowers to repay
     their loans according to their terms or a change in the value of the
     related collateral;

o    increased competition for deposits and loans adversely affecting rates and
     terms;

o    the timing, impact and other uncertainties of future acquisitions,
     including the Company's ability to identify suitable future acquisition
     candidates, the success or failure in the integration of their operations,
     and the ability to enter new markets successfully and capitalize on growth
     opportunities;

o    increased credit risk in the Company's assets and increased operating risk
     caused by a material change in commercial, consumer and/or real estate
     loans as a percentage of the total loan portfolio;

o    the failure of assumptions underlying the establishment of and provisions
     made to the allowance for credit losses;

o    changes in the availability of funds resulting in increased costs or
     reduced liquidity;

o    increased asset levels and changes in the composition of assets and the
     resulting impact on the Company's capital levels and regulatory capital
     ratios;

o    the Company's ability to acquire, operate and maintain cost effective and
     efficient systems without incurring unexpectedly difficult or expensive but
     necessary technological changes;

o    the loss of senior management or operating personnel and the potential
     inability to hire qualified personnel at reasonable compensation levels;

o    changes in statutes and government regulations or their interpretations
     applicable to financial holding companies and the Company's present and
     future banking and other subsidiaries, including changes in tax
     requirements and tax rates;

o    acts of terrorism, an outbreak of hostilities or other international or
     domestic calamities, weather or other acts of God and other matters beyond
     the Company's control; and


                                       9



o    other risks and uncertainties listed from time to time in the Company's
     reports and documents filed with the Securities and Exchange Commission.

     The Company undertakes no obligation to publicly update or otherwise revise
any forward-looking statements, whether as a result of new information, future
events or otherwise, unless the securities laws require the Company to do so.

STOCK SPLIT

     On May 31, 2002, the Company effected a two-for-one stock split in the form
of a 100 percent stock dividend to shareholders of record on May 20, 2002. The
Company's Common Stock outstanding increased to approximately 16.2 million
shares after the split. All per share and share information has been restated to
reflect this split.

OVERVIEW

     The Company is a registered financial holding company that derives
substantially all of its revenues and income from the operation of its two bank
subsidiaries, Prosperity Bank/SM/ and Bank of the Southwest. Bank of the
Southwest was acquired on October 1, 2002 and therefore no financial information
regarding Bank of the Southwest is included in the financial statements of the
Company at September 30, 2002. Both banks provide a broad line of financial
products and services to small and medium-sized businesses and consumers. Bank
of the Southwest operates two (2) full service banking locations in Dallas,
Texas and Prosperity Bank/SM/ operates forty (40) full-service banking locations
in the greater Houston metropolitan area and fifteen contiguous counties
situated south and southwest of Houston and extending into South Texas.

     Total assets were $1.69 billion at September 30, 2002 compared with $1.26
billion at December 31, 2001. Total loans increased to $647.7 million at
September 30, 2002 from $424.4 million at December 31, 2001, an increase of
$223.3 million, or 52.6%. Loans acquired in the Texas Guaranty acquisition
totaled $45.7 million and loans acquired in the Paradigm acquisition totaled
$175.7 million. Total deposits were $1.47 billion at September 30, 2002 compared
with $1.12 billion at December 31, 2001, a increase of $344.2 million, or 30.6%.
Shareholders' equity increased $60.9 million or 68.9%, to $149.6 million at
September 30, 2002 compared with $88.7 million at December 31, 2001.

RESULTS OF OPERATIONS AS REPORTED

     Net income available to common shareholders was $5.7 million ($0.32 per
common share on a diluted basis) for the quarter ended September 30, 2002
compared with $3.7 million ($0.23 per common share on a diluted basis) for the
quarter ended September 30, 2001, an increase of $1.9 million, or 51.5%. The
Company posted returns on average common equity of 19.43% and 17.34%, returns on
average assets of 1.54% and 1.25% and efficiency ratios of 48.90% and 55.07% for
the quarters ended September 30, 2002 and 2001, respectively.

     For the nine months ended September 30, 2002, net income available to
common shareholders was $14.9 million ($0.89 per common share on a diluted
basis) compared with $9.0 million ($0.55 per common share on a diluted basis)
for the same period in 2001, an increase of $6.0 million or 66.9%. The Company
posted returns on average common equity of 19.64% and 14.30%, returns on average
assets of 1.46% and 1.02% and efficiency ratios of 50.99% and 63.38% for the
nine months ended September 30, 2002 and 2001, respectively. The increase in
earnings per share, ROAA, ROAE and the efficiency ratio for the nine months
ended September 30, 2002 compared with the same period in 2001 was primarily due
to the combined effect of earning asset growth and the $2.4 million in pre-tax
merger-related expenses and other charges incurred in February 2001 in
connection with the merger of Commercial Bancshares, Inc. (the "Commercial
Merger") into the Company, which was accounted for as a pooling of interests.

Results of Operations Excluding Merger-Related Expenses

     Excluding the pre-tax merger-related expenses of $2.4 million incurred in
2001 in connection with the Commercial Merger, net income for the nine months
ended September 30, 2002 was $14.9 million ($0.89 per common share on a diluted
basis) compared with net income of $10.5 million ($0.64 per common share on a
diluted basis) for the nine months ended September 30, 2001, an increase of $4.4
million or 41.2%. Excluding the merger-related expenses in 2001, the Company
would have posted returns on average common equity of 19.64% and 16.82%, returns
on average assets of 1.46% and 1.20% and efficiency ratios of 50.99% and 56.36%
for the nine months ended September 30, 2002 and 2001, respectively.


                                       10



Net Interest Income

     Net interest income was $14.0 million for the quarter ended September 30,
2002 compared with $10.3 million for the quarter ended September 30, 2001, an
increase of $3.7 million, or 36.0%. Net interest income increased primarily as a
result of an increase in average interest-earning assets to $1.36 billion for
the quarter ended September 30, 2002 from $1.12 billion for the quarter ended
September 30, 2001, an increase of $240.1 million, or 21.4%. Additionally, net
interest income increased due to a change in the net interest margin from 3.66%
for the three months ended September 30, 2001 to 4.10% for the three months
ended September 30, 2002.

     The expansion of the net interest margin was principally due to a 154 basis
point decrease in the rate paid on interest-bearing liabilities from 3.94% for
the quarter ended September 30, 2001 to 2.40% for the quarter ended September
30, 2002, partially offset by a 81 basis point decrease in the yield on earning
assets from 6.81% for the quarter ended September 30, 2001 to 6.00% for the
quarter ended September 30, 2002.

     Net interest income increased $9.5 million, or 32.4%, to $38.8 million for
the nine months ended September 30, 2002 from $29.3 million for the same period
in 2001. This increase is mainly attributable to an increase in average
interest-earning assets to $1.28 billion for the nine months ended September 30,
2002 from $1.10 billion for the nine months ended September 30, 2001, an
increase of $181.6 million, or 16.6%. Additionally, net interest income
increased due to a change in the net interest margin from 3.56% for the nine
months ended September 30, 2001 to 4.05% for the nine months ended September 30,
2002.

     The expansion of the net interest margin was primarily due to a 178 basis
point decrease in the rate paid on interest-bearing liabilities from 4.27% for
the nine months ended September 30, 2001 to 2.49% for the nine months ended
September 30, 2002, partially offset by a 96 basis point decrease in the yield
on earning assets from 7.00% for the nine months ended September 30, 2001 to
6.04% for the nine months ended September 30, 2002.


                                       11



     The following tables set forth, for each category of interest-earning
assets and interest-bearing liabilities, the average amounts outstanding, the
interest earned or paid on such amounts, and the average rate earned or paid for
the quarter ended September 30, 2002 and 2001 and for the nine months ended
September 30, 2002 and 2001, respectively. The tables also set forth the net
interest margin on average total interest-earning assets for the same periods.
Except as indicated in the footnotes, no tax-equivalent adjustments were made
and all average balances are daily average balances. Any nonaccruing loans have
been included in the table as loans carrying a zero yield.




                                                      Three Months Ended September 30,
                                        -----------------------------------------------------------------
                                                      2002                           2001
                                        -----------------------------  ----------------------------------
                                          Average   Interest   Average      Average    Interest   Average
                                        Outstanding Earned/     Yield/    Outstanding  Earned/     Yield/
                                          Balance     Paid     Rate (4)     Balance      Paid     Rate (4)
                                        -----------  -------  ---------    ---------   ------    ---------
                                                            (Dollars in thousands)
                                                                                  
Assets
Interest-earning assets:
  Loans .............................  $  537,466     $ 9,828   7.31%     $  427,984   $  8,839     8.26%
  Securities(1) .....................     808,187      10,508   5.20         663,089      9,988     6.03
  Federal funds sold and other
   temporary investments ............      16,459          83   2.02          30,919        274     3.54
                                       ----------     -------             ----------   --------
    Total interest-earning assets ...   1,362,112      20,419   6.00%      1,121,992     19,101     6.81%
                                                      -------                          --------
  Less allowance for credit losses ..      (7,307)                            (5,579)
                                       ----------                         ----------
    Total interest-earning assets,
     net of allowance ...............   1,354,805                          1,116,413
     Noninterest-earning assets .....     111,184                             78,484
                                       ----------                         ----------
    Total assets ....................  $1,465,989                         $1,194,897
                                       ==========                         ==========
Liabilities and shareholders' equity
Interest-bearing liabilities:

  Interest-bearing demand deposits ..   $ 238,636    $    775   1.30%     $  194,277   $  1,062     2.19%
  Savings and money market accounts .     311,421       1,338   1.72         252,015      3,161     5.02
  Certificates of deposit ...........     513,025       4,132   3.22         438,772      4,550     4.15
  Federal funds purchased and other
   borrowings. ......................      15,668         219   5.59          13,563         68     2.01
                                        ---------    --------             ----------   --------
    Total interest-bearing
     liabilities ....................   1,078,750       6,464   2.40%        898,627      8,841     3.94%
                                        ---------    --------             ----------   --------
Noninterest-bearing liabilities:
  Noninterest-bearing demand
   deposits..........................     232,450                            177,296
   Company-obligated mandatorily
     redeemable trust preferred
     securities of subsidiary
     trusts .........................      28,000                             24,500
  Other liabilities. ................      10,409                              8,413
                                       ----------                         ----------
    Total liabilities. ..............   1,349,609                          1,108,836
                                        ---------                         -----------
Shareholders' equity ................     116,380                             86,061
                                        ---------                         ----------
    Total liabilities and
     shareholders' equity ...........  $1,465,989                         $1,194,897
                                       ==========                         ==========
Net interest rate spread ............                           3.60%                               2.87%
Net interest income and margin(2) ...               $  13,955   4.10%                  $ 10,260     3.66%
                                                    =========                          ========
Net interest income and margin
 (tax-equivalent basis)(3) ..........               $  14,399   4.23%                  $ 10,763     3.84%
                                                    =========                          ========


- -------------------

(1)  Yield is based on amortized cost and does not include any component of
     unrealized gains or losses.

(2)  The net interest margin is equal to net interest income divided by average
     interest-earning assets.

(3)  In order to make pretax income and resultant yields on tax-exempt
     investments and loans comparable to those on taxable investments and loans,
     a tax-equivalent adjustment has been computed using a federal income tax
     rate of 35%.

(4)  Annualized.


                                       12






                                                       Nine Months Ended September 30,
                                        -----------------------------------------------------------------
                                                      2002                           2001
                                        -----------------------------  ----------------------------------
                                          Average    Interest Average      Average    Interest    Average
                                        Outstanding  Earned/   Yield/    Outstanding   Earned/     Yield/
                                          Balance     Paid    Rate (4)     Balance      Paid      Rate (4)
                                        -----------  -------  ---------    ---------   ------    ---------
                                                            (Dollars in thousands)
                                                                                 
Assets
Interest-earning assets:
  Loans .............................  $  470,374    $25,945   7.35%    $  420,401     $26,578     8.43%
  Securities(1) .....................     794,155     31,785   5.34        639,579      29,625     6.18
  Federal funds sold and other
   temporary investments ............      13,442        175   1.74         36,423       1,361     4.98
                                       ----------   --------            ----------     -------
   Total interest-earning assets ....   1,277,971     57,905   6.04%     1,096,403      57,564     7.00%
                                                   ---------                           -------
  Less allowance for credit losses ..      (6,621)                          (5,568)
                                       -----------                      ----------
    Total interest-earning assets,
     net of allowance ...............   1,271,350                        1,090,835
     Noninterest-earning assets .....      91,440                           81,190
                                       ----------                       ----------

    Total assets ....................  $1,362,790                       $1,172,025
                                       ==========                       ==========
Liabilities and shareholders' equity
Interest-bearing liabilities:

  Interest-bearing demand deposits ..   $ 238,729   $  2,360   1.32%     $ 194,088     $ 3,747     2.57%
  Savings and money market accounts .     291,776      3,836   1.75        247,175       7,587     4.09
  Certificates of deposit. ..........     477,285     12,238   3.42        424,352      16,290     5.12
  Federal funds purchased and other
   borrowings. ......................      16,764        669   5.32         17,915         643     4.79
                                       ----------   --------            ----------     -------
    Total interest-bearing
     liabilities ....................   1,024,554     19,103   2.49%       883,530      28,267     4.27%
                                       ----------  ---------            ----------     -------
Noninterest-bearing liabilities:
  Noninterest-bearing demand
   deposits .........................     200,784                          180,376
   Company-obligated mandatorily
      redeemable trust preferred
      securities of subsidiary
      trusts ........................      27,333                           16,167
  Other liabilities. ................       8,691                            8,354
                                       ----------                       ----------
    Total liabilities. ..............   1,261,362                        1,088,427
                                       ----------                       ----------
Shareholders' equity ................     101,428                           83,598
                                       ----------                       ----------
    Total liabilities and
      shareholders' equity ..........  $1,362,790                       $1,172,025
                                       ==========                       ==========

Net interest rate spread ............                          3.56%                               2.73%

Net interest income and margin(2) ...              $  38,802   4.05%                  $ 29,297     3.56%
                                                   =========                          ========

Net interest income and margin
 (tax-equivalent basis)(3) ..........              $  40,189   4.19%                  $ 30,779     3.74%
                                                   =========                          ========


- --------------------
(1)  Yield is based on amortized cost and does not include any component of
     unrealized gains or losses.

(2)  The net interest margin is equal to net interest income divided by average
     interest-earning assets.

(3)  In order to make pretax income and resultant yields on tax-exempt
     investments and loans comparable to those on taxable investments and loans,
     a tax-equivalent adjustment has been computed using a federal income tax
     rate of 35%.

(4)  Annualized.


                                       13



     The Company's net interest income is affected by changes in the amount and
mix of interest-earning assets and interest-bearing liabilities, referred to as
a "volume change." It is also affected by changes in yields earned on
interest-earning assets and rates paid on interest-bearing deposits and other
borrowed funds, referred to as a "rate change."

     The following tables present the dollar amount of changes in interest
income and interest expense for the major components of interest-earning assets
and interest-bearing liabilities and distinguish between the increase (decrease)
related to outstanding balances and the volatility of interest rates for the
periods indicated. For purposes of these tables, changes attributable to both
rate and volume which cannot be segregated have been allocated to rate.




                                                   Three Months Ended September 30,
                                                   ---------------------------------
                                                           2002 vs. 2001
                                                   ---------------------------------
                                                          Increase
                                                         (Decrease)
                                                           Due to
                                                   ----------------------
                                                    Volume         Rate         Total
                                                   ---------    ---------    ---------
                                                         (Dollars in thousands)
                                                                    
   Interest-earning assets:
     Loans ......................................  $   2,261    $  (1,272)   $     989
     Securities .................................      2,186       (1,666)         520
     Federal funds sold and other temporary
       investments ..............................       (128)         (63)        (191)
                                                   ---------    ---------    ---------
       Total increase (decrease) in interest
         income .................................      4,319       (3,001)       1,318
                                                   ---------    ---------    ---------

   Interest-bearing liabilities:
     Interest-bearing demand deposits ...........        242         (529)        (287)
     Savings and money market accounts. .........        745       (2,568)      (1,823)
     Certificates of deposit. ...................        770       (1,188)        (418)
     Federal funds purchased and other
       borrowings ...............................         11          140          151
                                                   ---------    ---------    ---------
       Total increase (decrease) in interest
        expense .................................      1,768       (4,145)      (2,377)
                                                   ---------    ---------    ---------
   Increase in net interest income ..............  $   2,551    $   1,144    $   3,695
                                                   =========    ==========   =========

                                                      Nine Months Ended September 30,
                                                   -------------------------------------
                                                              2002 vs. 2001
                                                   -------------------------------------
                                                          Increase
                                                         (Decrease)
                                                           Due to
                                                   ----------------------
                                                    Volume         Rate         Total
                                                   ---------    ---------    ---------
                                                          (Dollars in thousands)

   Interest-earning assets:
     Loans ......................................  $   3,159    $  (3,792)   $    (633)
     Securities .................................      7,160       (5,000)       2,160
     Federal funds sold and other temporary
       investments ..............................       (859)        (327)      (1,186)
                                                   ---------    ---------    ---------
       Total increase (decrease) in interest
          income ................................      9,460       (9,119)         341
                                                   ---------    ---------    ---------

   Interest-bearing liabilities:
     Interest-bearing demand deposits ...........        862       (2,249)      (1,387)
     Savings and money market accounts ..........      1,369       (5,120)      (3,751)
     Certificates of deposit. ...................      2,032       (6,084)      (4,052)
     Federal funds purchased and other
       borrowings ...............................        (41)          67           26
                                                   ----------   ---------    ---------
       Total increase (decrease) in interest
         expense ................................      4,222      (13,386)      (9,164)
                                                   ---------    ---------    ---------
   Increase in net interest income ..............  $   5,238    $   4,267    $   9,505
                                                   =========    =========    =========


Provision for Credit Losses

     Management actively monitors the Company's asset quality and provides
specific loss provisions when necessary. Provisions for credit losses are
charged to income to bring the total allowance for credit losses to a level
deemed appropriate by management of the Company based on such factors as
historical credit loss experience, industry diversification of the commercial
loan portfolio, the amount of nonperforming loans and related collateral,


                                       14



the volume growth and composition of the loan portfolio, current economic
conditions that may affect the borrower's ability to pay and the value of
collateral, the evaluation of the loan portfolio through the internal loan
review function and other relevant factors.

     Provisions for credit losses are charged to income to bring the total
allowance for credit losses to a level deemed appropriate by management of the
Company based on such factors as historical loan loss experience, industry
diversification of the commercial loan portfolio, the amount of nonperforming
loans and related collateral, the volume growth and composition of the loan
portfolio, current economic conditions that may affect the borrower's ability to
pay and the value of collateral, the evaluation of the loan portfolio through
the internal loan review function and other relevant factors.

     The provision for credit losses for the quarter ended September 30, 2002
was $120,000 compared with a $50,000 provision for the corresponding period in
2001. The provision for credit losses for the nine months ended September 30,
2002 was $360,000 compared with a $50,000 provision for the same period in 2001.
The $310,000 increase in the provision for credit losses was primarily due to a
52.6% increase in the Company's loan portfolio from $424.4 million at December
31, 2001 to $647.7 million at September 30, 2002.

Noninterest Income

     The Company's primary sources of noninterest income are service charges on
deposit accounts and other banking service related fees. The following table
presents, for the periods indicated, the major categories of noninterest income:




                                           Three Months Ended       Nine Months Ended
                                             September 30,            September 30,
                                      ---------------------------------------------------
                                           2002        2001          2002         2001
                                        --------     -------      ---------    ---------
                                                           (Dollars in thousands)
                                                                    
 Service charges on deposit accounts .. $ 2,632      $ 1,924       $ 6,491      $  5,501
 Other noninterest income .............     261          263           889           779
                                        -------      -------       -------      --------
    Total noninterest income .......... $ 2,893      $ 2,187       $ 7,380      $  6,280
                                        =======      =======       =======      ========


     Noninterest income totaled $2.9 million for the three months ended
September 30, 2002 compared with $2.2 million for the same period in 2001, an
increase of $706,000, or 32.3%. Noninterest income increased $1.1 million, or
17.5%, to $7.4 million for the nine months ended September 30, 2002 from $6.3
million for the same period in 2001. The increase is primarily attributable to
the Texas Guaranty and Paradigm acquisitions.

Noninterest Expense

     Noninterest expense totaled $8.5 million for the quarter ended September
30, 2002 compared with $7.1 million for the quarter ended September 30, 2001, an
increase of $1.4 million, or 20.4%. This change is principally due to increases
in salaries and employee benefits, building and equipment costs and general
operating expenses related to the Paradigm, First State and Texas Guaranty
acquisitions.

     Noninterest expense totaled $24.3 million for the nine months ended
September 30, 2002, an increase of $1.4 million, or 5.9%, from $22.9 million for
the same period in 2001. In February 2001, the Company incurred $2.4 million in
merger-related expenses and other charges in connection with the merger of
Commercial. The $2.4 million in merger-related charges include closing costs,
legal fees, accounting fees, broker fees, employee related costs, and contract
terminations. Had the Company not incurred the $2.4 million in merger-related
expenses in 2001, noninterest expense for the nine months ended September 30,
2002 would have increased $3.8 million or 18.5% compared with the same period in
2001. This change is principally due to increases in salaries and employee
benefits, building and equipment costs and general operating expenses associated
with the Paradigm, First State and Texas Guaranty acquisitions. The change in
non-interest expense was also impacted by an increase in minority interest
expense related to the trust preferred securities due to the issuance of $15.0
million in trust preferred securities in July 2001 which was partially offset by
a decrease in goodwill amortization expense due to a recent accounting change.


                                       15



     The following table presents, for the periods indicated, the major
categories of noninterest expense:




                                                       Three Months Ended        Nine Months Ended
                                                          September 30,           September 30,
                                                      ---------------------      ------------------
                                                         2002       2001           2002       2001
                                                      ---------  ---------       --------   --------
                                                                 (Dollars in thousands)
                                                                                
     Salaries and employee benefits ................  $   3,954  $   3,247       $ 11,268   $  9,759
     Non-staff expenses:
         Net occupancy expense .....................        619        493          1,614      1,483
         Depreciation ..............................        459        385          1,230      1,183
         Data processing ...........................        532        526          1,495      1,551
         Communications expense (telephone, data
           circuits and courier) ...................        462        380          1,274      1,040
         Professional fees .........................        125        101            384        212
         Regulatory assessments and FDIC insurance..         77         55            231        177
         Ad valorem and franchise taxes.............        148        118            396        363
         Core deposit intangibles and goodwill
           amortization ............................         26        341             30      1,022
         Minority interest expense trust preferred
           securities ..............................        524        475          1,518      1,051
         Merger-related expenses ...................         --         --             --      2,425
         Other .....................................      1,580        947          4,853      2,668
                                                      ---------  ---------       --------    -------
     Total non-staff expenses ......................      4,552      3,822         13,025     13,175

     Total noninterest expense .....................  $   8,506  $   7,068       $ 24,293   $ 22,934
                                                      =========  =========       ========   ========


     Salaries and employee benefit expenses were $4.0 million for the quarter
ended September 30, 2002 compared with $3.3 million for the quarter ended
September 30, 2001, an increase of $707,000, or 21.8%. For the nine months ended
September 30, 2002, salaries and employee benefits increased $1.5 million or
15.5% compared with the same period in 2001. Both increases were principally due
to annual employee salary increases and additional staff associated with the
Texas Guaranty, First State and Paradigm acquisitions.

     Non-staff expenses increased $730,000, or 19.1%, to $4.6 million for the
quarter ended September 30, 2002 compared with the same period in 2001. The
increase was principally due to acquisition expenses for the three months ended
September 30, 2002, partially offset by a decrease in goodwill amortization due
to a recent accounting change. For the nine month period ended September 30,
2002, non-staff expenses decreased $150,000, or 1.2%, to $13.0 million from
$13.2 million for the same period in 2001. Non-staff expenses for the nine
months ended September 30, 2001 included $2.4 million in pre-tax merger expenses
related to the Commercial Merger. Had the Company not incurred the $2.4 million
in pre-tax merger expenses in 2001, non-staff expenses would have increased $2.3
million, or 21.2%, to $13.0 million for the nine months ended September 30,
2002. The increase was primarily due to the Paradigm, First State and Texas
Guaranty acquisitions.

Goodwill Amortization

     In June 2001, the Financial Accounting Standards Board ("FASB") issued
Statement of Financial Accounting Standards SFAS No. 142, Goodwill and Other
Intangible Assets (SFAS No. 142). SFAS No. 142 requires that goodwill and
intangible assets with indefinite useful lives no longer be amortized, but
instead be tested for impairment at least annually in accordance with the
provisions of SFAS No. 142. SFAS No. 142 also requires that intangible assets
with estimable useful lives be amortized over their respective estimated useful
lives to their estimated residual values, and reviewed for impairment in
accordance with SFAS No. 121 and subsequently, SFAS No. 144 after its adoption.

     The Company adopted the provisions of SFAS No. 142 as of January 1, 2002.
Goodwill and intangible assets determined to have an indefinite useful life
acquired in a purchase business combination completed after June 30, 2001 are no
longer amortized.


                                       16



Income Taxes

     Income tax expense increased $971,000, or 60.8%, to $2.6 million for the
three months ended September 30, 2002 from $1.6 million for the same period in
2001. For the nine month period ended September 30, 2002, income tax expense
increased $3.0 million, or 81.8%, to $6.6 million from $3.6 million for the same
period in 2001. The increase was primarily attributable to higher pretax net
earnings which resulted from an increase in net interest income for the nine
months ended September 30, 2002 when compared to the same period in 2001. In
addition, the Company incurred $2.4 million in merger-related expenses during
the nine months ended September 30, 2001 which had a tax benefit of
approximately $849,000.

FINANCIAL CONDITION

Loan Portfolio

     Total loans were $647.7 million at September 30, 2002, an increase of
$223.3 million, or 52.6% from $424.4 million at December 31, 2001. Loans
acquired in the Texas Guaranty Acquisition totaled $45.7 million and loans
acquired in the Paradigm acquisition totaled $175.7 million. Loan growth
occurred primarily in construction and land development loans and commercial
mortgage loans. Period end loans comprised 50.7% of average earning assets at
September 30, 2002 compared with 38.0% at December 31, 2001.

     The following table summarizes the loan portfolio of the Company by type of
loan as of September 30, 2002 and December 31, 2001:

                                 September 30,         December 31,
                                      2002                 2001
                              ------------------    ------------------
                                 Amount  Percent      Amount   Percent
                              ---------  -------    --------   -------
                                       (Dollars in thousands)
  Commercial and industrial..$  86,678    13.4%     $  46,986  11.1%
  Real estate:
    Construction and land
         development.........    52,163    8.1         20,963   4.9
    1-4 family residential...   197,876   30.5        175,253  41.3
    Home equity..............    24,246    3.7         20,541   4.8
    Commercial mortgages.....   168,686   26.0         78,446  18.5
    Farmland.................    13,120    2.0         10,686   2.5
    Multifamily residential..    12,941    2.0          9,694   2.3
  Agriculture................    28,934    4.5         15,757   3.7
  Other......................     1,098    0.2            953   0.2
  Consumer...................    61,973    9.6         45,121  10.7
                               --------  -----       --------  ----
       Total loans...........  $647,715  100.0%     $ 424,400 100.0%
                               ========  =====      ========= =====

Nonperforming Assets

     The Company had $789,000 in nonperforming assets at September 30, 2002 and
$1,000 in nonperforming assets at December 31, 2001. The Company generally
places a loan on nonaccrual status and ceases accruing interest when the payment
of principal or interest is delinquent for 90 days, or earlier in some cases,
unless the loan is in the process of collection and the underlying collateral
fully supports the carrying value of the loan. The Company generally charges off
all loans before attaining nonaccrual status. However, in connection with its
recent acquisitions, the Company acquired $34,000 in nonaccrual loans.


                                       17



     The following table presents information regarding nonperforming assets as
of the dates indicated:

                                              September 30,   December 31,
                                                 2002             2001
                                              -----------      ---------
                                                (Dollars in thousands)

   Nonaccrual loans.                          $   34           $     1
   Accruing loans 90 or more days past due...    168                --
                                              ------           -------
      Total nonperforming loans..............    202                --
   Other real estate.........................    587                --
                                              ------           -------
      Total nonperforming assets............. $  789           $     1
                                              ======           =======

Allowance for Credit Losses

         Management actively monitors the Company's asset quality and provides
specific loss allowances when necessary. Loans are charged-off against the
allowance for credit losses when appropriate. Although management believes it
uses the best information available to make determinations with respect to the
allowance for credit losses, future adjustments may be necessary if economic
conditions differ from the assumptions used in making the initial
determinations. As of September 30, 2002, the allowance for credit losses
amounted to $8.2 million, or 1.26% of total loans compared with $6.0 million, or
1.41% of total loans at December 31, 2001.

         Set forth below is an analysis of the allowance for credit losses for
the periods indicated:




                                                  Nine Months Ended              Year Ended
                                                 September 30, 2002           December 31, 2001
                                               ----------------------       -------------------
                                                            (Dollars in thousands)
                                                                             
 Average loans outstanding........................  $  470,374                     $  419,553
                                                    ==========                     ==========
 Gross loans outstanding at end of period.........  $  647,715                     $  424,400
                                                    ==========                     ==========
 Allowance for credit losses at
   beginning of period............................  $    5,985                     $    5,523
 Balances acquired with the Texas Guaranty,
   First State and Paradigm acquisitions..........       1,858                             --
 Provision for credit losses......................         360                            700
 Charge-offs:
   Commercial and industrial......................         (38)                          (180)
   Real estate and agriculture....................         (93)                          (175)
   Consumer.......................................        (113)                           (74)
 Recoveries:
   Commercial and industrial......................          34                             15
   Real estate and agriculture....................         118                            121
   Consumer.......................................          62                             55
                                                       -------                     ----------
 Net (charge-offs)................................         (29)                          (238)
                                                       -------                     ----------
 Allowance for credit losses at end of period.....     $ 8,173                     $    5,985
                                                       =======                     ==========
 Ratio of allowance to end of period
   loans..........................................        1.26%                         1.41%
 Ratio of net charge-offs to average
   loans..........................................        0.01%                         0.06%
 Ratio of nonperforming loans to end of
   period loans...................................        0.03%                          n/m(1)


(1)  Amount not meaningful. Nonperforming loans totaled $1,000 at December 31,
     2001.


                                       18



Securities

     Securities totaled $885.6 million at September 30, 2002 compared with
$752.3 million at December 31, 2001, an increase of $133.2 million, or 17.7%. At
September 30, 2002, securities represented 52.4% of total assets compared with
59.6% of total assets at December 31, 2001. The growth in securities was
primarily due to the Paradigm, First State and Texas Guaranty acquisitions.

Premises and Equipment

     Premises and equipment, net of accumulated depreciation, totaled $23.8
million at September 30, 2002 and $15.1 million at December 31, 2001. The $8.8
million increase was primarily due to the Paradigm, First State and Texas
Guaranty acquisitions.

Deposits

     Total deposits were $1.47 billion at September 30, 2002 compared with $1.12
billion at December 31, 2001, an increase of $344.2 million or 30.6%. Total
deposits acquired in the Paradigm acquisition were $218.3 million, total
deposits acquired in the First State acquisition were $14.1 million and total
deposits acquired in the Texas Guaranty acquisition were $61.8 million. At
September 30, 2002, noninterest-bearing deposits accounted for 20.7% of total
deposits compared with 16.8% of total deposits at December 31, 2001.
Interest-bearing deposits totaled $1.16 billion, or 79.3%, of total deposits at
September 30, 2002 compared with $934.6 million, or 83.2%, of total deposits at
December 31, 2001.

Other Borrowings

     Deposits are the primary source of funds for the Company's lending and
investment activities. Occasionally, the Company obtains additional funds from
the Federal Home Loan Bank ("FHLB") and correspondent banks. At September 30,
2002, the Company had $28.3 million in FHLB borrowings, of which $15.3 million
consisted of FHLB notes payable and $13.0 million consisted of FHLB advances.
The maturity dates on the FHLB notes payable range from the years 2004 to 2018
and have interest rates ranging from 5.95% to 6.48%. At December 31, 2001, the
Company had $18.1 million in FHLB borrowings of which $13.3 million consisted of
FHLB notes payable and $4.8 million consisted of FHLB advances. Any FHLB
advances are secured by a blanket lien on the Bank's first mortgage loans
against one-to-four family residential properties.

     At September 30, 2002 and December 31, 2001, the Company had no outstanding
borrowings under a revolving line of credit extended by a commercial bank.

Trust Preferred Securities

     At September 30, 2002, the Company's subsidiary trusts had outstanding
$33.0 million in trust preferred securities compared with $27.0 million at
December 31, 2001. The increase is due to the assumption of $6.0 million in
trust preferred securities in connection with the Paradigm acquisition.

Liquidity

     Effective management of balance sheet liquidity is necessary to fund growth
in earning assets and to pay liability maturities, depository customers'
withdrawal requirements and shareholders' dividends. The Company has numerous
sources of liquidity including a significant portfolio of shorter-term assets,
marketable investment securities (excluding those presently classified as
"held-to-maturity"), increases in customers' deposits, and access to borrowing
arrangements. Available borrowing arrangements maintained by the Company include
federal funds lines with other commercial banks and an advancement arrangement
with the FHLB.

     Asset liquidity is provided by cash and assets which are readily marketable
or which will mature in the near future. As of September 30, 2002, the Company
had cash and cash equivalents of $55.7 million, an increase from $41.7 million
at December 31, 2001.


                                       19



Capital Resources

     Total shareholders' equity was $149.6 million at September 30, 2002
compared with $88.7 million at December 31, 2001, an increase of $60.8 million,
or 68.6%. The increase was primarily due to net earnings of $14.9 million,
common stock issued in the Paradigm acquisition of $46.5 million and a net
change in unrealized gain on available for sale securities of $2.7 million,
partially offset by cash dividends paid of $2.8 million.

     Both the Board of Governors of the Federal Reserve System, with respect to
the Company, and the Federal Deposit Insurance Corporation ("FDIC"), with
respect to the Bank, have established certain minimum risk-based capital
standards that apply to bank holding companies and federally insured banks. As
of September 30, 2002, the Company's Tier 1 capital, total risk-based capital
and leverage capital ratios were 15.44%, 16.52% and 8.31%, respectively. As of
September 30, 2002, the Bank's risk-based capital ratios were above the levels
required for the Bank to be designated as "well capitalized" by the FDIC, with
Tier-1 capital, total risk-based capital and leverage capital ratios of 12.74%,
13.83% and 6.85%, respectively.

ITEM 3.  QUANTITATIVE AND QUALITATIVE DISCLOSURES ABOUT MARKET RISK

     The Company manages market risk, which for the Company is primarily
interest rate risk, through its Asset Liability Committee which is composed of
senior officers of the Company, in accordance with policies approved by the
Company's Board of Directors.

     The Company uses simulation analysis to examine the potential effects of
market changes on net interest income and market value. It considers
macroeconomic variables, Company strategy, liquidity and other factors as it
quantifies market risk. Based on the Company's September 30, 2002 simulation
analysis, the Company estimates that its current net interest income structure
would change by approximately (4.72)% over the next twelve months assuming an
immediate 100 basis point decline in rates and change by approximately 1.66%
over the next twelve months assuming an immediate 100 basis point increase in
rates. See Form 10-K, Item 7 "Management's Discussion and Analysis and Results
of Operations-Interest Rate Sensitivity and Liquidity" which was filed on March
8, 2002 for further discussion.

ITEM 4.  CONTROLS AND PROCEDURES

     Evaluation of disclosure controls and procedures. Within 90 days prior to
the date of this report, the Company carried out an evaluation, under the
supervision and with the participation of management, including it's Chief
Executive Officer and Chief Financial Officer, of the effectiveness of the
design and operation of it's disclosure controls and procedures. Based on this
evaluation, the Company's Chief Executive Officer and Chief Financial Officer
concluded that the Company's disclosure controls and procedures (as defined in
Rules 13a-14(c) and 15d-14(c) under the Securities Exchange Act of 1934 (the
"Exchange Act")) are effective to ensure that information required to be
disclosed by the Company in reports that it files or submits under the Exchange
Act is recorded, processed, summarized and reported to the Company's management
within the time periods specified in the Securities and Exchange Commission's
rules and forms.

     Changes in internal controls. Subsequent to the date of the most recent
evaluation, there were no significant changes in the Company's internal controls
or in other factors that could significantly affect the Company's disclosure
controls and procedures, and there were no corrective actions with regard to
significant deficiencies and material weaknesses based on such evaluation.

PART II - OTHER INFORMATION

ITEM 1.  LEGAL PROCEEDINGS

     Not Applicable


                                       20



ITEM 2.  CHANGES IN SECURITIES AND USE OF PROCEEDS

     a.  Not applicable
     b.  Not applicable
     c.  Not applicable
     d.  Not applicable

ITEM 3.  DEFAULTS UPON SENIOR SECURITIES

     Not applicable

ITEM 4.  SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS

     Not applicable

ITEM 5.  OTHER INFORMATION

     Not applicable

ITEM 6.  EXHIBITS AND REPORTS ON FORM 8-K

     a. Exhibits:

             Exhibit
             Number                    Description
             -------                   -----------

               99.1     Certification of Chief Executive Officer pursuant
                        to 18 U.S.C., Section 1350, as adopted  pursuant to
                        Section 906 of the Sarbanes-Oxley Act of 2002.

               99.2     Certification of Chief Financial Officer pursuant
                        to 18 U.S.C., Section 1350, as adopted pursuant to
                        Section 906 of the Sarbanes-Oxley Act of 2002.

     b. Reports on Form 8-K:

          (i)  The Company filed a Current Report on Form 8-K under Item 5 of
               Form 8-K on July 12, 2002 to announce the completion of the
               acquisition of The First State Bank in Needville, Texas.

          (ii) The Company filed a Current Report on Form 8-K under Item 5 of
               Form 8-K on July 15, 2002 to announce the signing of a definitive
               agreement with Southwest Bank Holding Company, Dallas, Texas,
               providing for the merger of Southwest Bank Holding Company into
               the Company.

         (iii) The Company filed a Current Report on Form 8-K under Item 5 of
               Form 8-K on July 15, 2002 to announce the release of the
               Company's earnings for the second quarter 2002.


                                       21



          (iv) The Company filed a Current Report on Form 8-K under Item 5 of
               Form 8-K on August 16, 2002 to announce the signing of a
               definitive agreement with First National Bank of Bay City, Bay
               City, Texas, pursuant to which First National Bank will be merged
               into Prosperity Bank.

          (v)  The Company filed a Current Report on Form 8-K under Item 5 of
               Form 8-K on September 3, 2002 to announce the completion of the
               merger of Paradigm Bancorporation, Inc. into the Company.

                                   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 thereunto duly authorized.

                                PROSPERITY BANCSHARES, INC.(SM)
                                         (Registrant)


      Date:  11/14/02                 /s/ David Zalman
           -------------        --------------------------------
                                          David Zalman
                                Chief Executive Officer/President

      Date:  11/14/02                 /s/ David Hollaway
           ------------         --------------------------------
                                         David Hollaway
                                    Chief Financial Officer


                                       22



                                 CERTIFICATIONS

     I, David Zalman, President and Chief Executive Officer of the registrant,
certify that:

     1. I have reviewed this quarterly report on Form 10-Q of Prosperity
Bancshares, Inc.;

     2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary in order
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
quarterly report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this quarterly report;

     4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

          (a) designed such disclosure controls and procedures to ensure that
     material information relating to the registrant, including its consolidated
     subsidiaries, is made known to us by others within those entities,
     particularly during the period in which this quarterly report is being
     prepared;

          (b) evaluated the effectiveness of the registrant's disclosure
     controls and procedures as of a date within 90 days prior to the filing
     date of this quarterly report (the "Evaluation Date"); and

          (c) presented in this quarterly report our conclusions about the
     effectiveness of the disclosure controls and procedures based on our
     evaluation as of the Evaluation Date;

     5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of the registrant's board of directors (or persons performing the
equivalent function):

          (a) all significant deficiencies in the design or operation of
     internal controls which could adversely affect the registrant's ability to
     record, process, summarize and report financial data and have identified
     for the registrant's auditors any material weaknesses in internal controls;
     and

          (b) any fraud, whether or not material, that involves management or
     other employees who have a significant role in the registrant's internal
     controls; and

     6. The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect the internal
controls subsequent to the date of our most recent evaluation, including any
corrective actions with regard to significant deficiencies and material
weaknesses.

         Date: November 14, 2002


          /s/ David Zalman
         --------------------------------
         David Zalman
         President and Chief Executive Officer


                                       23



     I, David Hollaway, Chief Financial Officer of the registrant, certify that:

     1. I have reviewed this quarterly report on Form 10-Q of Prosperity
Bancshares, Inc.;

     2. Based on my knowledge, this quarterly report does not contain any untrue
statement of a material fact or omit to state a material fact necessary in order
to make the statements made, in light of the circumstances under which such
statements were made, not misleading with respect to the period covered by this
quarterly report;

     3. Based on my knowledge, the financial statements, and other financial
information included in this quarterly report, fairly present in all material
respects the financial condition, results of operations and cash flows of the
registrant as of, and for, the periods presented in this quarterly report;

     4. The registrant's other certifying officers and I are responsible for
establishing and maintaining disclosure controls and procedures (as defined in
Exchange Act Rules 13a-14 and 15d-14) for the registrant and we have:

          (a) designed such disclosure controls and procedures to ensure that
     material information relating to the registrant, including its consolidated
     subsidiaries, is made known to us by others within those entities,
     particularly during the period in which this quarterly report is being
     prepared;

          (b) evaluated the effectiveness of the registrant's disclosure
     controls and procedures as of a date within 90 days prior to the filing
     date of this quarterly report (the "Evaluation Date"); and

          (c) presented in this quarterly report our conclusions about the
     effectiveness of the disclosure controls and procedures based on our
     evaluation as of the Evaluation Date;

     5. The registrant's other certifying officers and I have disclosed, based
on our most recent evaluation, to the registrant's auditors and the audit
committee of the registrant's board of directors (or persons performing the
equivalent function):

          (a) all significant deficiencies in the design or operation of
     internal controls which could adversely affect the registrant's ability to
     record, process, summarize and report financial data and have identified
     for the registrant's auditors any material weaknesses in internal controls;
     and

          (b) any fraud, whether or not material, that involves management or
     other employees who have a significant role in the registrant's internal
     controls; and

     6. The registrant's other certifying officers and I have indicated in this
quarterly report whether or not there were significant changes in internal
controls or in other factors that could significantly affect the internal
controls subsequent to the date of our most recent evaluation, including any
corrective actions with regard to significant deficiencies and material
weaknesses.

         Date: November 14, 2002


           /s/ David Hollaway
         ------------------------------
         David Hollaway
         Chief Financial Officer

                                       24



                                  EXHIBIT INDEX

Exhibit
Number                         Description
- -------                        -----------

  99.1    Certification of Chief Executive Officer pursuant to 18 U.S.C.,
          Section 1350, as adopted  pursuant to Section 906 of the
          Sarbanes-Oxley Act of 2002.

  99.2    Certification of Chief Financial Officer pursuant to 18 U.S.C.,
          Section 1350, as adopted pursuant to Section 906 of the
          Sarbanes-Oxley Act of 2002.