<PAGE>   1
                                  UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             Washington, D.C. 20549

                                    FORM 10-Q

      [X]   Quarterly Report Pursuant to Section 13 or 15(d) of the Securities
            Exchange Act of 1934

                  For the quarterly period ended March 31, 2000

      [ ]   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 000-23277

                               CITIZENS BANCORP/OR
             (Exact name of registrant as specified in its charter)

                 Oregon                                91-1841688
        (State of Incorporation)                    (I.R.S. Employer
                                                 Identification Number)

                           275 Southwest Third Street
                             Corvallis, Oregon 97339
                    (Address of principal executive offices)

                                 (541) 752-5161
              (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 [ ]

Indicate the number of shares outstanding of each of the issuer's classes of
common stock, as of the latest practicable date.

4,137,630 shares as of April 30, 2000, no par.

<PAGE>   2
                                CITIZENS BANCORP
                                    FORM 10-Q
                                 MARCH 31, 2000
                                      INDEX

<TABLE>
<CAPTION>
                                                                                   Page
                                                                                 Reference
                                                                                 ---------
<S>                                                                              <C>
PART I.

   ITEM 1. - FINANCIAL INFORMATION - UNAUDITED

    Consolidated Balance Sheets as of March 31, 2000 and December 31, 1999          1

    Consolidated Statements of Income for the three months ended
        March 31, 2000 and 1999                                                     2

    Consolidated Statements of Changes in Shareholders' Equity                      3

    Consolidated Statements of Cash Flows for three months ended                    4
        March 31, 2000 and 1999

    Notes to Consolidated Financial Statements                                      5

   ITEM 2. - Management's Discussion and Analysis of Financial Condition
              and Results of Operations                                           6 - 11

   ITEM 3. - Quantitative and Qualitative Disclosure about Market Risk              11

PART II. - OTHER INFORMATION

   ITEM 1. - Legal Proceedings                                                      12

   ITEM 2. - Changes in Securities                                                  12

   ITEM 3. - Defaults Upon Senior Securities                                        12

   ITEM 4. - Submission of Matters to a Vote of Security Holders                    12

   ITEM 5. - Other Information                                                      12

   ITEM 6. - Exhibits and Reports on Form 8-K                                       12

   SIGNATURES                                                                       13
</TABLE>

<PAGE>   3
                          PART I FINANCIAL INFORMATION
ITEM 1
CITIZENS BANCORP AND SUBSIDIARY
CONSOLIDATED BALANCE SHEETS
(Unaudited)
(Dollars in Thousands)

<TABLE>
<CAPTION>
                                                       MARCH 31,      DECEMBER 31,
                                                         2000             1999
                                                       ---------      ------------
<S>                                                    <C>            <C>
ASSETS
      Cash and due from banks                          $   8,963        $  17,990
      Interest bearing deposits in banks                   3,511            2,870
      Federal funds sold                                       0                0
      Securities available for sale                       61,367           60,678
      Securities held to maturity                          8,305            8,422
      Loans held for sale                                  1,907            1,643

      Loans                                              145,017          140,194
      Allowance for credit losses                         (1,174)          (1,071)
                                                       ---------        ---------
      NET LOANS                                        $ 143,843        $ 139,123

      Premises and equipment                               5,187            5,283
      Accrued interest receivable                          2,203            2,032
      Other assets                                         2,106            1,565
                                                       ---------        ---------
      TOTAL ASSETS                                     $ 237,392        $ 239,606
                                                       =========        =========

LIABILITIES AND SHAREHOLDERS' EQUITY
LIABILITIES
      Deposits:
         Demand                                        $  29,995        $  32,843
         Savings and interest bearing demand             104,474           97,880
         Time                                             60,742           63,627
                                                       ---------        ---------
      TOTAL DEPOSITS                                   $ 195,211        $ 194,350

      Repurchase agreements                               15,433           13,425
      Other borrowings                                       581            5,125
      Accrued interest payable                               183              207
      Other liabilities                                      675            2,157
                                                       ---------        ---------
      TOTAL LIABILITIES                                $ 212,083        $ 215,264

SHAREHOLDERS' EQUITY
      Common stock (no par value); authorized
      10,000,000 shares; Issued and outstanding:
      2000 - 4,137,630; 1999 - 4,124,091 shares;          20,085           19,868
      Retained Earnings                                    5,815            4,849
      Accumulated other comprehensive loss                  (591)            (375)
      TOTAL SHAREHOLDERS' EQUITY                       $  25,309        $  24,342
                                                       ---------        ---------
      TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY       $ 237,392        $ 239,606
                                                       =========        =========
</TABLE>

See accompanying notes


                                       1
<PAGE>   4
CITIZENS BANCORP AND SUBSIDIARY
CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME
(Unaudited)
(Dollars in thousand, except per share amounts)


<TABLE>
<CAPTION>
                                                                      THREE MONTHS ENDED
                                                                          MARCH 31,
                                                               -------------------------------
                                                                  2000                1999
                                                               -----------         -----------
<S>                                                            <C>                 <C>
INTEREST INCOME:
   Loans                                                       $     3,354         $     3,073
   Interest on deposits and federal funds sold                          56                 240
   Securities available for sale                                       860                 691
   Securities held to maturity                                         156                  92
                                                               -----------         -----------
   TOTAL INTEREST INCOME                                       $     4,424         $     4,096

INTEREST EXPENSE:
   Deposits                                                          1,309               1,296
   Borrowed funds                                                       36                  72
   Repurchase agreements                                               131                 114
                                                               -----------         -----------
   TOTAL INTEREST EXPENSE                                      $     1,476         $     1,482

   NET INTEREST INCOME                                         $     2,948         $     2,614

PROVISIONS FOR CREDIT LOSSES                                           (58)                (66)

   NET INTEREST INCOME AFTER PROVISION FOR CREDIT LOSSES       $     2,890         $     2,548

NON-INTEREST INCOME:
   Service charges on deposit accounts                                 253                 273
   Other                                                               345                 297
                                                               -----------         -----------
   TOTAL NON-INTEREST INCOME                                   $       598         $       570

NON-INTEREST EXPENSE:
   Salaries and employee benefits                                    1,172               1,055
   Occupancy and equipment                                             296                 248
   Other                                                               662                 596
                                                               -----------         -----------
   TOTAL NON-INTEREST EXPENSE                                  $     2,130         $     1,899

   INCOME BEFORE INCOME TAXES                                  $     1,358         $     1,219
                                                               -----------         -----------

INCOME TAXES                                                          (393)               (425)

   NET INCOME                                                  $       965         $       794
                                                               ===========         ===========

Earnings per share:
Basic and diluted                                              $      0.23         $      0.19

Average number of shares outstanding                             4,123,720           4,122,934

Return on average assets                                              1.67%               1.41%
</TABLE>


                                       2
<PAGE>   5
CITIZENS BANCORP AND SUBSIDIARY
CONSOLIDATED STATEMENTS
OF CHANGES IN SHAREHOLDERS' EQUITY
(Unaudited)
(Dollars in Thousands)

<TABLE>
<CAPTION>
                                                   THREE MONTHS ENDED MARCH 31, 2000 AND 1999
                                          --------------------------------------------------------------
                                           NUMBER OF                            ACCUMULATED
                                            COMMON        COMMON                   OTHER
                                            SHARES        STOCK      RETAINED  COMPREHENSIVE
                                          OUTSTANDING     AMOUNT     EARNINGS   INCOME (LOSS)    TOTAL
                                          -----------     -------    --------  --------------   --------
<S>                                       <C>             <C>        <C>       <C>              <C>
BALANCE, AT DECEMBER 31, 1998               3,891,137     $16,069     $6,271        $ 245       $ 22,585

COMPREHENSIVE INCOME:

Net Income                                         --          --        794           --            794

Other comprehensive income, net of tax:
   Unrealized loss on securities,
   net of reclassification adjustment              --          --         --         (191)          (191)

COMPREHENSIVE INCOME                               --          --         --           --            603

Issuance of common stock                       36,569         607         --           --            607
                                           ----------     -------     ------        -----       --------
BALANCE, AT MARCH 31, 1999                  3,927,706     $16,676     $7,065        $  54       $ 23,795

BALANCE, AT DECEMBER 31, 1999               4,124,091     $19,868     $4,849        $(375)      $ 24,342

COMPREHENSIVE INCOME:

Net Income                                         --          --        965           --            965

Other comprehensive income,
   net of tax:
   Unrealized loss on securities,
   net of reclassification
   adjustment                                      --          --         --         (216)          (216)

COMPREHENSIVE INCOME                               --          --         --           --            749

Issuance of common stock                       13,539         217         --           --            217
                                           ----------     -------     ------        -----       --------
BALANCE, AT MARCH 31, 2000                 $4,137,630     $20,085     $5,815        $(591)      $ 25,309
</TABLE>


                                       3
<PAGE>   6
CITIZENS BANCORP AND SUBSIDIARY
CONSOLIDATED STATEMENTS OF CASH FLOWS
(Unaudited), (Dollars in thousands)

<TABLE>
<CAPTION>
                                                                            THREE MONTHS ENDED
                                                                                 MARCH 31,
                                                                          -----------------------
                                                                            2000           1999
                                                                          --------       --------
<S>                                                                       <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES
   Net income                                                             $    965       $    794
   Adjustments to reconcile net income to net
    cash provided by operating activities:
     Provision for credit losses                                                58             66
     Depreciation and amortization                                             161            121
     Stock dividends received                                                  (14)           (13)
     (Increase) decrease in accrued interest receivable                       (171)           (84)
     Increase (decrease)  in accrued interest payable                          (24)             4
     Other                                                                     771            165
                                                                          --------       --------
   NET CASH PROVIDED BY OPERATING ACTIVITIES                              $    204       $  1,053

CASH FLOWS FROM INVESTING ACTIVITIES
   Net (increase) decrease in interest bearing deposits in banks              (641)         4,277
   Proceeds from maturities of available for sale securities                 5,000          6,500
   Proceeds from sales of available for sale securities                          0              0
   Proceeds from maturities of securities held to maturity                     115              0
   Purchases of securities available for sale                               (5,973)        (7,140)
   Purchases of securities held to maturity                                      0           (266)
   Increase in loans made to customers, net of principal collections        (4,750)        (2,698)
   Purchases of premises and equipment and other                               (39)        (1,040)
                                                                          --------       --------
   NET CASH PROVIDED BY INVESTING ACTIVITIES                              $ (6,288)      $   (367)

CASH FLOWS FROM FINANCING ACTIVITIES
   Net increase (decrease) in deposits                                         861         (1,867)
   Net decrease in repurchase agreements and other borrowings               (2,536)        (1,242)
   Payment of dividends, net of dividends reinvested                        (1,268)          (794)
                                                                          --------       --------
   NET CASH USED IN FINANCING ACTIVITIES                                  $ (2,943)      $ (3,903)

   NET DECREASE IN CASH AND DUE FROM BANKS                                $ (9,027)      $ (3,217)

CASH AND DUE FROM BANKS
   Beginning of period                                                      17,990         12,771
                                                                          --------       --------
   END OF PERIOD                                                          $  8,963       $  9,554
                                                                          ========       ========
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
   Interest paid                                                             1,500          1,478
   Income taxes paid                                                           325            370
SUPPLEMENTAL SCHEDULE OF NON-CASH INVESTING AND FINANCING ACTIVITIES
   Fair value adjustment of available for sale, net of tax                    (216)          (191)
   Issuance of common stock through dividend reinvestment plan                 217            607
</TABLE>


                                       4
<PAGE>   7
CITIZENS BANCORP
Notes to Consolidated Financial Statements (unaudited)

1.  BASIS OF PRESENTATION

         The interim condensed consolidated financial statements include the
         accounts of Citizens Bancorp ("Bancorp"), a bank holding company and
         its wholly owned subsidiary, Citizens Bank ("Bank") after elimination
         of intercompany transactions and balances. Substantially all activity
         of Citizens Bancorp is conducted through its subsidiary bank.

         The interim financial statements are unaudited but have been prepared
         in accordance with generally accepted accounting principles for interim
         condensed financial statements. Accordingly, the condensed interim
         financial statements do not include all of the information and
         footnotes required by generally accepted financial statements. In the
         opinion of management, all adjustments consisting only of normal
         recurring accruals necessary for a fair presentation for the interim
         periods included herein have been made.

         The interim condensed consolidated financial statements should be read
         in conjunction with the December 31, 1999 consolidated financial
         statements, including notes there to, included in Bancorp's 1999 Annual
         Report to shareholders.

2.  USE OF ESTIMATES IN THE PREPARATION OF FINANCIALS

         The preparation of financial statements, in conformity with general
         accounting principles, requires management to make estimates and
         assumptions that affect the reported amounts of assets and liabilities
         and disclosure of contingent assets and liabilities at the date of the
         financial statements and the reported amounts of revenues and expenses
         during the reporting period. Actual results could differ from those
         estimates.

3.  SHAREHOLDERS EQUITY AND NET INCOME PER COMMON SHARE

         The Board of Directors declared a $.36 per share dividend to Bancorp
         shareholders of record on December 10, 1999, payable on January 10,
         2000. Through the Dividend Reinvestment Plan (DRIP) 13,539 shares were
         purchased at a price of $16.08 per share. The DRIP resulted in an
         increase of shares outstanding from 4,124,091 to 4,137,630.

         All per share amounts have been restated to retroactively reflect stock
         dividends, stock purchased and stock splits previously reported.

4.  CONTINGENCIES

         Unfunded loan commitments totaled $27.0 million as of March 31, 2000
         and $33.0 million as of December 31, 1999.

5.  ACCOUNTING CHANGES

         In June 1998, the Financial Accounting Standards Board issued SFAS No.
         133, Accounting for Derivative Instruments and Hedging Activities. This
         statement establishes accounting and reporting standards for derivative
         instruments, including certain derivative instruments embedded in other
         contracts (collectively referred to as derivatives) and for hedging
         activities. It requires that an entity recognize all derivatives as
         either assets or liabilities in its balance sheet and measure those
         instruments at fair value. Under this statement, an entity that elects
         to apply hedge accounting is required to establish at the inception of
         the hedge the method it will use for assessing the effectiveness of the
         hedging derivative and the measurement approach for determining the
         ineffective aspect of the hedge. Those methods must be consistent with
         the entity's approach to managing risk. This statement is effective for
         all fiscal years beginning after June 15, 2000. The Bank had no
         derivatives as of March 31, 2000, nor does the Bank engage in any
         hedging activities. The Company does not anticipate that the adoption
         of SFAS No. 133 will have a material effect on its financial position
         or results of operations.


                                       5
<PAGE>   8
ITEM 2

                           MANAGEMENT'S DISCUSSION AND
                         ANALYSIS OF FINANCIAL CONDITION
                            AND RESULTS OF OPERATIONS

In addition to historical information, this report contains certain "forward
looking statements" within the meaning of the Private Securities Litigation
Reform Act of 1995. This statement is included for the purpose of availing
Bancorp the protection of the safe harbor provisions of this Act. The forward
looking statements contained in this report are subject to factors, risks and
uncertainties that may cause actual results to differ materially from those
projected. Factors that might result in such material difference include, but
are not limited to economic conditions, the regulatory environment, rapidly
changing technology, new legislation, competitive factors, the interest rate
environment and the overall condition of the banking industry. Forward looking
statements can be identified by such words as "estimate", "believe", "expect",
"intend", "anticipate", "should", "may", "will", or other similar words or
phrases. Although Bancorp believes that the expectations reflected in such
forward looking statements are reasonable, it can give no assurances that such
expectations will prove to have been correct. Readers are therefore cautioned
not to place undue reliance on such forward looking statements, which reflect
management's analysis only as of the date of the statement. Bancorp does not
intend to update these forward looking statements other than in its periodic
filings under applicable security laws.

OVERVIEW

Citizens Bank ("the Bank") was chartered October 1, 1957 (charter #333) by the
State of Oregon as a commercial bank. Since its beginning with a single office
in Corvallis, Citizens Bank has expanded to an additional eight locations in the
four counties of Benton, Linn, Lane, and Yamhill. Branches are located in the
communities of Corvallis, Philomath, Albany, Junction City, Veneta, and
McMinnville.

Citizens Bancorp ("Bancorp"), an Oregon Corporation and bank holding company,
was formed in 1996 for the purpose of becoming the holding company of Citizens
Bank. Bancorp is headquartered in Corvallis, Oregon. Its principal business
activities are conducted through its full-service, commercial bank subsidiary,
Citizens Bank.

Bancorp operates through a two-tiered corporate structure. At the holding
company level the affairs of Bancorp are overseen by a Board of Directors
elected by the shareholders of Bancorp at the annual meeting of shareholders.
The business of the Bank is overseen by a Board of Directors elected by Bancorp,
the sole owner of the Bank. As of the date of this Form 10-Q the respective
members of the Board of Directors of the Bank and the Board of Directors of
Bancorp are identical.

Bancorp's culture focuses on the tenets of collaborative leadership, branch
autonomy, assertive business development, a positive working environment, a
commitment to the community, outstanding customer service, and relationship
banking. Management believes that a healthy culture together with a progressive
management style will result in constantly improved shareholder value.

Bancorp's primary goal is to improve shareholder value through increased
earnings while maintaining a high level of safety and soundness. Bancorp is
committed to independence and long-term performance strategies.

The long-term benefit to Bancorp of its cultural and management style is
consistent growth and development of the Bank over time. Risk levels have been
greatly reduced because of expertise in loan, investment, operational, and human
resource management.

Bancorp's primary market focus is to provide commercial bank services to
businesses, professionals, and individuals. Bancorp emphasizes the development
of meaningful customer relationships and a high level of service. Its employees
are well-trained banking professionals who are committed to these objectives.

The Bank offers deposit accounts, safe-deposit boxes, consumer loans, commercial
loans, agricultural loans, and commercial and residential real estate loans.
Commercial loans include operating lines of credit, equipment and real estate
financing, capital needs, and other traditional financing products.


                                       6
<PAGE>   9
The Bank has a growing emphasis in financing farm operations, equipment, and
property. The Bank has also emphasized loans to professionals with its
professional line of credit products.

The Bank's loan portfolio has some concentrations in real estate secured loans,
primarily commercial properties.

Deposit products include regular and "package" checking accounts, savings
accounts, certificates of deposit, money market accounts, and IRA accounts.

The Bank offers debit cards, check guarantee cards, ATM cards as well as a
MasterCard and VISA cards as part of its retail banking services. The Bank also
operates a small residential mortgage loan origination department that
originates loans and sells them into the secondary market. The Bank offers
extended banking hours in selected locations as well as Saturday banking. ATM
machines are also available at nine (9) locations offering 24-hour transaction
services, including cash withdrawals, deposits, account transfers, and balance
inquiries.

The Bank also offers its customers a 24-hour automated telephone service that
offers account transfers and balance inquiries.

Bancorp provided the Federal Reserve Board of San Francisco its declaration to
elect to become a financial holding company, pursuant to the Gramm-Leach-Bliley
Act (GLBA) of 1999, on February 15, 2000. Bancorp received notice of approval
from the Board of Governors of the Federal Reserve System on March 13, 2000.
Bancorp has no current plan to engage in any of the financial activities
permissible for a financial holding company under the GLBA. Bancorp made its
declaration only to be prepared to take advantage of any future business
opportunities.

Bancorp reported net income of $965,000, or $.23 per share for the three months
ending March 31, 2000, compared to net income of $794,000, or $.19 per share for
the same period in 1999. The net increase is primarily attributable to an
increase in interest income from loans due to an increase in overall interest
rates and growth in loans.

LOAN PORTFOLIO

The composition of the loan portfolio was as follows (in thousands):

<TABLE>
<CAPTION>
                                             MARCH 31, 2000       DECEMBER 31, 1999
                                             --------------       -----------------
<S>                                          <C>                  <C>
Commercial                                     $  26,893              $  26,520
Agriculture                                       15,178                 13,875
Real Estate
   Construction                                    6,835                  7,352
   1-4 Family                                     33,076                 29,776
   Other                                          59,100                 59,537
Consumer Loans                                     4,491                  3,718
                                               ---------              ---------
                                                 145,573                140,778

Less:  net deferred loan fees                       (556)                  (584)

TOTAL LOANS                                    $ 145,017              $ 140,194

Less:  allowance for credit losses                (1,174)                (1,071)
                                               ---------              ---------
NET LOANS                                      $ 143,843              $ 139,123
                                               =========              =========
</TABLE>


                                       7
<PAGE>   10
Transactions in the allowance for credit losses were as follows for the three
months ended March 31, 2000:

<TABLE>
<CAPTION>
                                                            2000           1999
                                                           ------         ------
<S>                                                        <C>            <C>
Balance at beginning of period                             $1,071         $1,419
Provision charged to operations                                58             66
Loans recovered                                                62              0
Loans charged off                                             (17)           (31)
                                                           ------         ------
Balance at end of period                                   $1,174         $1,454
                                                           ======         ======
</TABLE>

It is the policy of the Bank to place loans on nonaccrual after they become 90
days past due unless the loans are well secured and in the process of
collection. The Bank may place loans that are not contractually past due or that
are deemed fully collateralized on nonaccrual status as a management tool to
actively oversee specific loans.

Loans on nonaccrual status as of March 31, 2000 and December 31, 1999 were
approximately $555,000 and $654,000 respectively. Loans past due 90 days or more
on which the Bank continued to accrue interest were approximately $130,000 at
March 31, 2000 and $73,000 at December 31, 1999. Of the $555,000 on non-accrual,
$465,000 is the guaranteed portion on one commercial loan. The Bank charged off
its portion of the loan in 1999. The Bank is actively pursuing all avenues of
collection on its collateral of inventory, accounts receivable and real estate.
Payment of the guaranteed portion is expected by second quarter 2000. There were
no loans with modified terms as of March 31, 2000.

INVESTMENT SECURITIES

The amortized cost and estimated book value of the investment securities held by
the Bank, including unrealized gains and losses, at March 31, 2000 and December
31, 1999, are as follows (in thousands):

March 31, 2000

<TABLE>
<CAPTION>
                                                        Amortized        Estimated        Unrealized
                                                           Cost          Fair Value       Loss, net
                                                        ---------        ----------       ----------
<S>                                                     <C>              <C>              <C>
AVAILABLE FOR SALE
U.S. Treasury Securities
   (Including securities of government agencies
   and corporations)                                      $61,581          $60,612          $(969)
Other                                                         755              755              0
                                                          -------          -------          -----
TOTAL                                                     $62,336          $61,367          $(969)

 HELD TO MATURITY
 Obligations of State and Political Subdivisions          $ 8,305          $ 8,030          $(275)
</TABLE>

December 31, 1999

<TABLE>
<CAPTION>
                                                        Amortized        Estimated        Unrealized
                                                           Cost          Fair Value       Loss, net
                                                        ---------        ----------       ----------
<S>                                                     <C>              <C>              <C>
U.S. Treasury Securities
   (Including securities of government agencies
   and corporations)                                      $60,611          $59,937          $(674)
Other                                                         741              741              0
                                                          -------          -------          -----
TOTAL                                                     $61,352          $60,678          $(674)

HELD TO MATURITY
Obligations of State and Political Subdivisions           $ 8,422          $ 8,207          $(215)
</TABLE>


                                       8
<PAGE>   11

MATERIAL CHANGES IN FINANCIAL CONDITION

At March 31, 2000 total assets decreased .92% or approximately $2.2 million from
total assets at December 31, 1999. Major components of the change in total
assets were:

      -  $5.1 million increase in total loans

      -  $ .6 million increase in investments

      -  $8.4 million decrease in cash and cash equivalents

The increase in loans was primarily due to loan demand as a result of favorable
economic conditions, increased business development by the Bank's loan officers,
marketing of the Bank's personalized loan services and loans booked at the new
branches in West Albany and McMinnville. Net loans increased from $139.1 million
at December 31, 1999 to $143.8 million for the three-month period ending March
31, 2000. An increase of $4.7 million or 3.39 percent.

The slight increase in investments was a result of management's decision to
place excess funds into the investment portfolio. The timing of the maturities
are determined by using the Bank's asset/liability model. The Bank increased its
investments in US Treasuries, and US Government Agencies.

At March 31, 2000 and December 31, 1999 the Bank kept its liquid funds in an
interest bearing demand account held at the Federal Home Loan Bank of Seattle
(FHLB). The balance at the FHLB at March 31, 2000 was $3.5 million. This account
balance can fluctuate widely on a day to day basis.

The Bank experienced a net increase in total deposits to $195.2 million at March
31, 2000 from $194.4 million at December 31, 1999 which represents an increase
of $.9 million or .44 percent. The net increase in total deposits was the result
of an overall increase in the number of account relationships and increases in
the balances in interest bearing demand accounts. The increase in new account
relationships is a result of the Bank's business development activities.

Long-term borrowings from the FHLB are utilized to fund and match large
long-term commercial loans. Net long-term borrowings decreased by $3.0 million
for the period ending March 31, 2000 as compared to year-end December 31, 1999.
This decrease was a result of the early payoff of loans at the FHLB without a
prepayment penalty. The Bank currently has no borrowings from the FHLB.

MATERIAL CHANGES IN RESULTS OF OPERATIONS

The Company reported net income of $965,000 or $.23 per share, for the three
months ended March 31, 2000, compared to net income of approximately $794,000,
or $.19 per share for the same period in 1999. This represents an increase in
net income of $171,000 or 21.5 percent. The net increase was primarily
attributable to an increase in interest income from loans.

Total interest income increased approximately $328,000 for the three months
ended March 31, 2000 as compared to the same 1999 period. This increase was
primarily due to increases in interest income on loans due to volume and higher
net interest rates on the loan portfolio.

Net interest income after provision for credit losses increased $342,000 or 13.4
percent for the three months ending March 31, 2000. The increase in interest
income is primarily from loan volume and higher interest rates on loans compared
to the same period in 1999. The decrease in interest expense is due to a
decrease in the volume of borrowed funds.

Non-interest income increased approximately $28,000 for the three months ended
March 31, 2000 as compared to the same three-month period in 1999. These
increases are attributable to an increase in the volume of bankcard services
over last year for the same period.

Salaries and employee benefits increased approximately $117,000 (11.1%) for the
three-month period ending March 31, 2000 compared to the same three-month period
in 1999. These increases were primarily due to routine adjustments in officer
and staff salaries, staff increases due to the new West Albany and McMinnville
Branches, and technical support staff.


                                       9
<PAGE>   12
Other non-interest expense excluding salaries and employee benefits increased
approximately $114,000 (13.5%) for the three months ended March 31, 2000 as
compared to the same three-month period in 1999. This increase was primarily due
to increases in expense relative to growth of the merchant bankcard and debit
card products, an increase in depreciation expense for the new branch buildings,
furniture and equipment, and the computer network.

CREDIT LOSS PROVISION

The Bank maintains an allowance for credit losses on loans that occur from time
to time as an incidental part of the business of banking. Loans are charged
against this allowance for credit losses which is adjusted periodically to
reflect changing loan volumes, risk potential in the portfolio and general
economic conditions. Additions to the allowance for credit losses are made
through a charge against income.

During the first three months ended March 31, 2000 the Bank funded the allowance
for credit losses $58,000 from operations as compared to $66,000 for the same
three-month period of 1999. The Bank is increasing the monthly provision for
credit losses to match the increased loan growth. The Bank experienced $17,000
in credit losses and $62,000 in recoveries for the three months ended March 31,
2000 and $31,000 in credit losses for the same period ended March 31, 1999.
Historically, the Bank's loan charge-off levels have been very low compared to
its peers. Management believes that the allowance for credit losses at March 31,
2000 of $1,174,000 or .81% of total loans is adequate.

The provision for credit losses represents charges made to operating expenses to
maintain an appropriate allowance for credit losses. Management considers
various factors in establishing an appropriate allowance. These factors include
an assessment of the financial condition of the borrower, a determination of the
borrowers ability to service the debt from cash flow, a conservative assessment
of the value of the underlying collateral, the condition of the specific
industry of the borrower, the economic health of the local community, a
comprehensive analysis of the levels and trends of loan types, and a review of
past due and classified loans.

It is Bank policy that once each quarter, Bank management makes recommendations
to the Board regarding the adequacy of the Bank's allowance for credit losses
and the amount of the provision that should be charged against earnings for the
next three months. Management's recommendations are based on an internal loan
review process to determine specific potential loss factors on classified loans,
risk factor of loan grades, historical loss factors derived from actual net
charge-off experience, trends in non-performing loans and other potential risks
in the loan portfolio such as industry concentration, the local economy and the
volume of loans.

Management uses a loan grading system wherein loan officers assign a risk grade
to each of their loans at inception and at intervals based on receipt of
financial information, renewal, or when there is an indication that a credit may
have improved or weakened. The risk grades in the loan portfolio are used in
determining a factor that is used in analyzing the adequacy of the reserve for
credit losses.

The Bank's policy is to charge off loans when, in management's opinion, the loan
or a portion of the loan is deemed uncollectible following a concerted
collection effort. Management continues to pursue collection after a loan is
charged-off until all possibilities for collection have been exhausted.

LIQUIDITY AND CAPITAL RESOURCES

Bancorp's subsidiary, the Bank, has adopted policies to maintain a relatively
liquid position to enable it to respond to changes in the Bank's financial
environment. Generally, the Bank's major sources of liquidity are customer
deposits, sales and maturities of securities, the use of borrowing lines with
correspondent banks including Federal Home Loan bank borrowings, loan repayments
and net cash provided by operating activities.

The analysis of liquidity should also include a review of the changes that
appear in the consolidated statement of cash flows for the first three months of
2000. The statement of cash flows includes operating, investing and financing
categories. Operating activities include net income which is adjusted for
non-cash items and increases or decreases in cash due to certain changes in
assets and liabilities. Investing activities consist primarily of both proceeds
from maturities and purchases of securities, and the net growth in loans.
Financing activities present the cash flows associated with the Bank's deposit
accounts.


                                       10
<PAGE>   13
Management believes that the Bank's existing sources of liquidity will enable
the Bank to fund its requirements in the normal course of business.

As of March 31, 2000, shareholders' equity totaled $25,309,000 as compared to
$24,342,000 at December 31, 1999, an increase of 3.97%. This increase in equity
was primarily due to the Company's net income.

The total number of shares of Bancorp's common stock that may be issued upon the
exercise of all options granted under the Incentive Stock Option Plan may not
exceed in the aggregate four percent (4%) of Bancorp's issued and outstanding
shares of common stock. As of April 30, 2000 Bancorp's issued and outstanding
shares totaled 4,137,630, so the maximum number of shares issuable under the
Incentive Stock Option Plan was 165,505 on that date. As of April 30, 2000,
options for 17,000 shares had been granted and none exercised under this Plan.

The total number of shares of Bancorp's common stock that may be issued under
the Stock Bonus Plan may not exceed in the aggregate one percent (1%) of
Bancorp's issued and outstanding shares of common stock. As of April 30, 2000
Bancorp's issued and outstanding shares totaled 4,137,630, so the maximum number
of shares issuable under the Stock Bonus Plan was 41,376 on that date. As of
April 30, 2000 no stock had been issued under this Plan.

Capital ratios for the Company were as follows as of the dates indicated:

<TABLE>
<CAPTION>
                                                                           Bancorp
                                     Adequately      Well         --------------------------
                                    Capitalized   Capitalized     March 31,     December 31,
                                     Standards     Standards        2000            1999
                                    -----------   -----------     ---------     ------------
<S>                                 <C>           <C>             <C>           <C>
Tier 1 Leverage Ratio                     4%            5%          10.99%          10.11%
Tier 1 Risk Based Capital Ratio           4%            6%          16.98%          16.36%
Total Risk Based Capital Ratio            8%           10%          17.75%          17.07%
</TABLE>

ITEM 3. QUANTITATIVE & QUALITATIVE ANALYSIS ABOUT MARKET RISK

Interest rate, credit, and operations risks are the most significant market
risks impacting the Bank's performance. The Bank relies on loan review, prudent
loan underwriting standards and an adequate allowance for credit losses to
mitigate credit risk.

The Bank uses an asset/liability management simulation model to measure interest
rate risk. The model quantifies interest rate risk through simulating forecasted
net interest income over a 12 month time period under various rate scenarios, as
well as monitoring the change in the present value of equity under the same rate
scenarios. The present value of equity is defined as the difference between the
market value of current assets less current liabilities. By measuring the change
in the present value of equity under different rate scenarios, management is
able to identify interest rate risk that may not be evident in simulating
changes in forecasted net interest income.

The Bank is currently slightly asset sensitive, meaning that interest earning
assets mature or reprice more quickly than interest-bearing liabilities in a
given period. An increase or decrease in market rates of interest will not
materially impact net interest income.

It should be noted that the simulation model does not take into account future
management actions that could be undertaken if there were a change in actual
market interest rate during the year. Also, certain assumptions are required to
perform modeling simulations that my have significant impact on the results.
These include assumptions regarding the level of interest rates and balance
changes on deposit products that do not have stated maturities. These
assumptions have been developed through a combination of industry standards and
future expected pricing behavior. The model also includes assumptions about
changes in the composition or mix of the balance sheet. The results derived from
the simulation model could vary significantly by external factors such as
changes in the prepayment assumptions, early withdrawals of deposits and
competition. Management has assessed these risks and believes that there has
been no material change since December 31, 1999.


                                       11
<PAGE>   14
                           PART II. OTHER INFORMATION

ITEM 1. LEGAL PROCEEDINGS

      None

ITEM 2. CHANGES IN SECURITIES

      None

ITEM 3. DEFAULTS UPON SENIOR SECURITIES

      None

ITEM 4. SUBMISSION OF MATTERS TO VOTE OF SECURITY HOLDERS

      None

ITEM 5. OTHER INFORMATION

      None

ITEM 6. EXHIBITS AND REPORTS ON FORM 8-K

      (a)   Exhibits

            The following exhibits are filed as part of this report.

            27.0  Financial Data Schedule for the three months ended March 31,
                  2000.

      (b)   Reports on Form 8-K

            None


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<PAGE>   15
                                   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.

Date: May 12, 2000                      /s/ William V. Humphreys
                                        ----------------------------------------
                                   By:  William V. Humphreys
                                        President and Chief Executive Officer

Date: May 12, 2000                       /s/ Lark E. Wysham
                                        ----------------------------------------
                                   By:  Lark E. Wysham
                                        Senior Vice President and
                                        Chief Financial Officer

                                       13