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        September 30, 2006
                                      ------------------

                                       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 No. 0-31525

                            AMERICAN RIVER BANKSHARES
             ------------------------------------------------------
             (Exact name of registrant as specified in its charter)


                    California                            68-0352144
         -------------------------------          ------------------------
         (State or other jurisdiction of          (IRS Employer ID Number)
          incorporation or organization)

       3100 Zinfandel Drive, Rancho Cordova, California             95670
       ------------------------------------------------           ----------
            (Address of principal executive offices)              (Zip code)

                                 (916) 231-6700
                         -------------------------------
                         (Registrant's telephone number,
                              including area code)

                                 Not Applicable
         ---------------------------------------------------------------
         (Former name, former address and former fiscal year, if changed
                               since last report.)

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 by check mark whether the registrant is a large accelerated filer, an
accelerated filer, or non-accelerated filer. See definition of "accelerated
filer and large accelerated filer" in Rule 12b-2 of the Exchange Act.

Large accelerated filer [ ]   Accelerated filer [X]   Non-accelerated filer [ ]

Indicate by check mark whether the registrant is a shell company (as defined in
Rule 12b-2 of the Exchange Act).
                                                                  Yes [ ] No [X]

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

No par value Common Stock - 5,399,500 shares outstanding at November 6, 2006.

                                  Page 1 of 41
                 The Index to the Exhibits is located at Page 38
<PAGE>

                          PART I-FINANCIAL INFORMATION

Item 1. Financial Statements.


                           AMERICAN RIVER BANKSHARES
                     CONSOLIDATED BALANCE SHEETS (Unaudited)
                             (Dollars in thousands)

<TABLE>
<CAPTION>
                                                                            September 30,   December 31,
                                                                                2006            2005
                                                                            ------------    ------------
ASSETS
<S>                                                                         <C>             <C>
Cash and due from banks                                                     $     29,076    $     34,825
Federal funds sold                                                                    --           1,250
                                                                            ------------    ------------
        Total cash and cash equivalents                                           29,076          36,075

Interest-bearing deposits in banks                                                 4,951           4,844
Investment securities:
     Available-for-sale, (amortized cost: 2006--$110,492; 2005--$125,468)        109,579         124,189
     Held-to-maturity (market value: 2006--$36,104; 2005--$44,658)                36,502          45,012
Loans and leases, less allowance for loan and lease losses of
     $5,871 at September 30, 2006 and $5,679 at December 31, 2005                374,396         365,571
Premises and equipment, net                                                        1,905           2,090
Federal Home Loan Bank stock                                                       3,695           2,608
Accounts receivable servicing receivables, net                                     2,611           2,000
Goodwill and other intangible assets                                              17,903          18,152
Accrued interest receivable and other assets                                      11,481          12,222
                                                                            ------------    ------------
                                                                            $    592,099    $    612,763
                                                                            ============    ============

LIABILITIES AND SHAREHOLDERS' EQUITY

Deposits:
     Noninterest bearing                                                    $    154,549    $    164,397
     Interest bearing                                                            338,895         336,309
                                                                            ------------    ------------
             Total deposits                                                      493,444         500,706

Short-term borrowed funds                                                         25,566          39,386
Long-term debt                                                                     6,722           4,270
Accrued interest payable and other liabilities                                     4,747           5,655
                                                                            ------------    ------------

             Total liabilities                                                   530,479         550,017
                                                                            ------------    ------------

Commitments and contingencies (Note 3)
Shareholders' equity:
      Common stock - no par value; 20,000,000 shares
         authorized; issued and outstanding - 5,407,500 shares
         at September 30, 2006 and 5,604,479 shares at December 31, 2005          41,959          47,474
      Retained earnings                                                           20,200          16,029
      Accumulated other comprehensive loss, net of taxes (Note 5)                   (539)           (757)
                                                                            ------------    ------------

            Total shareholders' equity                                            61,620          62,746
                                                                            ------------    ------------
                                                                            $    592,099    $    612,763
                                                                            ============    ============
</TABLE>

See Notes to Unaudited Consolidated Financial Statements

                                       2
<PAGE>

                            AMERICAN RIVER BANKSHARES
                   UNAUDITED CONSOLIDATED STATEMENT OF INCOME


<TABLE>
<CAPTION>
(In thousands, except per share data)
For the periods ended September 30,                              Three months                  Nine months
                                                          ---------------------------   ---------------------------
                                                              2006           2005           2006           2005
                                                          ------------   ------------   ------------   ------------
<S>                                                       <C>            <C>            <C>            <C>
Interest income:
    Interest and fees on loans                            $      8,083   $      6,719   $     23,170   $     19,371
    Interest on Federal funds sold                                   4             42              6             77
    Interest on deposits in banks                                   66             55            174            140
    Interest and dividends on investment securities:
        Taxable                                                  1,326          1,493          4,189          3,956
        Exempt from Federal income taxes                           250            245            752            678
        Dividends                                                    8              8             26             25
                                                          ------------   ------------   ------------   ------------
              Total interest income                              9,737          8,562         28,317         24,247
                                                          ------------   ------------   ------------   ------------
Interest expense:
    Interest on deposits                                         2,325          1,553          6,146          3,975
    Interest on short-term borrowings                              514            171          1,586            500
    Interest on long-term debt                                     100             85            296            265
                                                          ------------   ------------   ------------   ------------
               Total interest expense                            2,939          1,809          8,028          4,740
                                                          ------------   ------------   ------------   ------------

               Net interest income                               6,798          6,753         20,289         19,507

Provision for loan and lease losses                                 30             --            270            272
                                                          ------------   ------------   ------------   ------------
                Net interest income after provision for
                loan and lease losses                            6,768          6,753         20,019         19,235
                                                          ------------   ------------   ------------   ------------

Noninterest income                                                 605            594          1,836          1,759
                                                          ------------   ------------   ------------   ------------

Noninterest expense:
    Salaries and employee benefits                               1,927          1,789          5,780          5,268
    Occupancy                                                      345            300          1,042            894
    Furniture and equipment                                        185            228            629            688
    Other expense                                                1,145          1,147          3,411          3,345
                                                          ------------   ------------   ------------   ------------
                Total noninterest expense                        3,602          3,464         10,862         10,195
                                                          ------------   ------------   ------------   ------------

                 Income before income taxes                      3,771          3,883         10,993         10,799

Income taxes                                                     1,496          1,507          4,338          4,182
                                                          ------------   ------------   ------------   ------------

                 Net income                               $      2,275   $      2,376   $      6,655   $      6,617
                                                          ============   ============   ============   ============

Basic earnings per share (Note 4)                         $       0.41   $       0.42   $       1.19   $       1.18
                                                          ============   ============   ============   ============
Diluted earnings per share (Note 4)                       $       0.41   $       0.41   $       1.17   $       1.15
                                                          ============   ============   ============   ============

Cash dividends per share                                  $       0.15   $       0.14   $       0.45   $       0.39
                                                          ============   ============   ============   ============
</TABLE>

See notes to Unaudited Consolidated Financial Statements

                                       3
<PAGE>

AMERICAN RIVER BANKSHARES
CONSOLIDATED STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY
(Dollars in thousands, except number of shares) (Unaudited)
<TABLE>
<CAPTION>
                                                                                          Accumulated
                                                   Common Stock                             Other
                                            ---------------------------     Retained     Comprehensive  Shareholders'  Comprehensive
                                               Shares         Amount        Earnings     Income (Loss)     Equity         Income
                                            ------------   ------------   ------------   ------------   ------------   ------------
<S>                                            <C>         <C>            <C>            <C>            <C>            <C>
Balance, January 1, 2005                       5,314,732   $     42,557   $     15,878   $        555   $     58,990

Comprehensive income (Note 5):
   Net income                                                                    9,184                         9,184   $      9,184
   Other comprehensive loss, net of tax:
         Change in unrealized losses on
            available-for-sale
            investment securities                                                              (1,312)        (1,312)        (1,312)
                                                                                                                       ------------

            Total comprehensive income                                                                                 $      7,872
                                                                                                                       ============

Cash dividends ($0.54 per share)                                                (3,012)                       (3,012)
Fractional shares redeemed                            (1)           (32)                                         (32)
5% stock dividend                                266,801          6,021         (6,021)
Stock options exercised                          113,309            945                                          945
Retirement of common stock                       (90,362)        (2,017)                                      (2,017)
                                            ------------   ------------   ------------   ------------   ------------

Balance, December 31, 2005                     5,604,479         47,474         16,029           (757)        62,746

Comprehensive income (Note 5):
   Net income                                                                    6,655                         6,655   $      6,655
   Other comprehensive income, net of tax:
         Change in unrealized losses on
            available-for-sale
            investment securities                                                                 218            218            218
                                                                                                                       ------------

            Total comprehensive income                                                                                 $      6,873
                                                                                                                       ============

Cash dividends ($0.45 per share)                                                (2,484)                       (2,484)
Stock options exercised                           33,162            321                                          321
Stock option compensation                                           159                                          159
Retirement of common stock                      (230,141)        (5,995)                                      (5,995)
                                            ------------   ------------   ------------   ------------   ------------

Balance, September 30, 2006                    5,407,500   $     41,959   $     20,200   $       (539)  $     61,620
                                            ============   ============   ============   ============   ============
</TABLE>

See Notes to Unaudited Consolidated Financial Statements

                                       4
<PAGE>

AMERICAN RIVER BANKSHARES
CONSOLIDATED STATEMENT OF CASH FLOWS
(Unaudited)

(Dollars in thousands)
For the nine months ended September 30,
<TABLE>
<CAPTION>
                                                                                 2006            2005
                                                                             ------------    ------------
<S>                                                                          <C>             <C>
Cash flows from operating activities:
     Net income                                                              $      6,655    $      6,617
     Adjustments to reconcile net income to net cash
         provided by (used in) operating activities:
            Provision for loan and lease losses                                       270             272
            Decrease in deferred loan origination fees, net                           (25)            (99)
            Depreciation and amortization                                             730             751
            Net amortization of investment security
                 premiums                                                             535             868
            Gain on sale of securities                                                 --             (48)
            Provision for accounts receivable servicing
                 receivable losses                                                      2              45
            Increase in cash surrender value of life insurance                       (137)           (133)
                 polices
            Stock option compensation expense                                         159              --
            Decrease (increase) in accrued interest
                 receivable and other assets                                          731          (1,095)
            Decrease in accrued interest payable
                 and other liabilities                                               (878)        (12,263)
                                                                             ------------    ------------

                       Net cash provided by (used in) operating activities          8,042          (5,085)
                                                                             ------------    ------------

Cash flows from investing activities:
            Proceeds from the sale of available-for-sale
                    investment securities                                           2,477           6,964
            Proceeds from called available-for-sale investment
                    securities                                                        400              --
            Proceeds from matured available-for-sale investment
                    securities                                                     13,000          15,760
            Purchases of available-for-sale investment securities                  (3,066)        (37,231)
            Purchases of held-to-maturity investment securities                        --         (14,944)
            Proceeds from principal repayments for available-
                    for-sale mortgage-related securities                            1,781           2,660
            Proceeds from principal repayments for held-to-
                    maturity mortgage-related securities                            8,358           8,617
            Net (increase) decrease in interest-bearing deposits in banks            (107)            600
            Net increase in loans                                                  (9,069)         (5,952)
            Net increase in accounts receivable
                    servicing receivables                                            (613)           (122)
            Proceeds from the sale of equipment                                        --              --
            Purchases of equipment                                                   (297)           (602)
            Net increase in FHLB stock                                             (1,087)           (421)
                                                                             ------------    ------------

                      Net cash provided in (used in) investing activities          11,777         (24,671)
                                                                             ------------    ------------
</TABLE>
                                       5
<PAGE>

<TABLE>
<CAPTION>

<S>                                                                          <C>             <C>
     Cash flows from financing activities:
            Net (decrease) increase in demand, interest-bearing
                and savings deposits                                         $    (22,640)   $     31,735
            Net increase in time deposits                                          15,378          11,533
            Net increase (decrease) in long-term debt                               2,452          (1,546)
            Net decrease in short-term borrowings                                 (13,820)         (5,597)
            Payment of cash dividends                                              (2,514)         (1,948)
            Cash paid to repurchase common stock                                   (5,995)         (1,148)
            Cash paid for fractional shares                                            --             (16)
            Exercise of stock options                                                 321             943
                                                                             ------------    ------------

                    Net cash (used in) provided by financing
                       activities                                                 (26,818)         33,956
                                                                             ------------    ------------

                  (Decrease) increase in cash and cash
                       equivalents                                                 (6,999)          4,200

Cash and cash equivalents at beginning of year                                     36,075          35,115
                                                                             ------------    ------------

Cash and cash equivalents at end of period                                   $     29,076    $     39,315
                                                                             ============    ============
</TABLE>

See Notes to Unaudited Consolidated Financial Statements

                                       6
<PAGE>

                            AMERICAN RIVER BANKSHARES
              NOTES TO UNAUDITED CONSOLIDATED FINANCIAL STATEMENTS
                               September 30, 2006

1.  CONSOLIDATED FINANCIAL STATEMENTS

In the opinion of management, the unaudited consolidated financial statements
contain all adjustments (consisting of only normal recurring adjustments)
necessary to present fairly the consolidated financial position of American
River Bankshares (the "Company") at September 30, 2006 and December 31, 2005,
and the results of its operations and its cash flows for the three-month and
nine-month periods ended September 30, 2006 and 2005 and cash flows for the
nine-month periods ended September 30, 2006 and 2005 in conformity with
accounting principles generally accepted in the United States of America.

Certain disclosures normally presented in the notes to the financial statements
prepared in accordance with generally accepted accounting principles have been
omitted. These interim consolidated financial statements should be read in
conjunction with the consolidated financial statements and notes thereto
included in the Company's 2005 annual report on Form 10-K. The results of
operations for the three-month and nine-month periods ended September 30, 2006
may not necessarily be indicative of the operating results for the full year.

In preparing such financial statements, management is required to make estimates
and assumptions that affect the reported amounts of assets and liabilities as of
the date of the balance sheet and revenues and expenses for the period. Actual
results could differ significantly from those estimates. Material estimates that
are particularly susceptible to significant changes in the near term relate to
the determination of the allowance for loan and lease losses, the provision for
taxes and the estimated fair value of investment securities.

2.  STOCK-BASED COMPENSATION

Stock Option Plans

In 2000 and 1995, the Board of Directors adopted stock option plans under which
options may be granted to employees and directors under incentive and
nonstatutory agreements. The plans require that the option price may not be less
than the fair market value of the stock at the date the option is granted. The
options under the plans expire on dates determined by the Board of Directors,
but not later than ten years from the date of grant. The vesting period is
generally five years; however the vesting period can be modified at the
discretion of the Company's Board of Directors. Outstanding options under the
plans are exercisable until their expiration. New shares are issued upon
exercise.

Adoption of FAS 123(R)

Prior to January 1, 2006, the Company accounted for the plans under the
recognition and measurement provisions of Accounting Principles Board ("APB")
Opinion No. 25, Accounting for Stock Issued to Employees, and related
Interpretations, as permitted by Financial Accounting Standards Board ("FASB")
Statement No. 123, Accounting for Stock-Based Compensation and FASB Statement
No. 148, Accounting for Stock-Based Compensation - Transition and Disclosure. No
stock-based employee compensation cost was recognized for options granted for
the three-month and nine-month periods ended September 30, 2005 in the Statement
of Income, as all options granted under the plans had an exercise price equal to
the market value of the underlying common stock on the date of grant. Effective
January 1, 2006, the Company adopted the fair value recognition provisions of
FASB Statement No. 123(R), Share-Based Payment, using the modified prospective
transition method. Under that transition method, compensation cost recognized in
fiscal year 2006 includes: (a) compensation cost for all share-based payments
vesting during 2006 that were granted prior to, but not yet vested as of,
January 1, 2006 based on the grant-date fair value estimated in accordance with
the original provisions of Statement 123, and (b) compensation cost for all
share-based payments vesting during 2006 that were granted subsequent to January
1, 2006, based on the grant-date fair value estimated in accordance with the
provisions of Statement 123(R). Results for prior periods have not been

                                       7
<PAGE>

restated and there was no one-time effect resulting from the adoption of FASB
Statement No. 123(R). Compensation expense is recognized over the vesting period
on a straight line accounting basis.

As a result of adopting Statement 123(R) on January 1, 2006, the Company's
income before provision for income taxes and net income for the three-month and
nine-month periods ended September 30, 2006, was $62,000 and $51,000 and
$159,000 and $132,000 lower, respectively, than if it had continued to account
for share-based compensation under APB Opinion No. 25. Diluted earnings per
share and basic earnings per share for the three-month and nine-month periods
ended September 30, 2006 would have increased $0.01 and $0.03, respectively, had
the Company continued to account for share-based compensation under APB Opinion
No. 25.

In accordance with FASB Statement No. 148, Accounting for Stock-Based
Compensation - Transition and Disclosure, the following table illustrates the
effect on net income and earnings per share as if the Company had applied the
fair value recognition provisions of FASB Statement No. 123, Accounting for
Stock-Based Compensation, to stock-based compensation for the three-month and
nine-month periods ended September 30, 2005. Pro forma adjustments to the
Company's consolidated net income and earnings per share are disclosed during
the years in which the options become vested (dollars in thousands, except per
share data).

<TABLE>
<CAPTION>
                                                        Three Months Ended    Nine Months Ended
                                                        September 30, 2005    September 30, 2005
                                                        ------------------    ------------------
(Dollars in thousands, except per share data)
<S>                                                     <C>                   <C>
Net income, as reported                                 $            2,376    $            6,617
Deduct:  Total stock-based compensation expense
         determined under the fair value based method
         for all awards, net of related tax effects                    (21)                  (58)
                                                        ------------------    ------------------
Pro forma net income                                    $            2,355    $            6,559
                                                        ==================    ==================

Basic earnings per share - as reported                  $             0.42    $             1.18
Basic earnings per share - pro forma                    $             0.42    $             1.17

Diluted earnings per share - as reported                $             0.41    $             1.15
Diluted earnings per share - pro forma                  $             0.41    $             1.15

The fair value of each option award is estimated on the date of grant using a
Black-Scholes-Merton based option valuation model that uses the assumptions
noted in the following table. Because Black-Scholes-Merton based option
valuation models incorporate ranges of assumptions for inputs, those ranges are
disclosed. Expected volatilities are based on historical volatility of the
Company's stock and other factors. The Company uses historical data to estimate
option exercise and employee termination within the valuation model. The
expected term of options granted is derived from guidance provided in the
Securities and Exchange Commission's Staff Accounting Bulletin No. 107 and
represents the period of time that options granted are expected to be
outstanding. The risk-free rate for periods within the contractual life of the
option is based on the U.S. Treasury yield curve in effect at the time of grant.

<CAPTION>
                                                               Nine Months Ended September 30,
                                                              --------------------------------
                                                                  2006                2005
                                                              ------------        ------------
<S>                                                              <C>               <C>
     Dividend yield                                                2.16%           2.27%-2.71%
     Expected volatility                                          29.6%            30.3-34.1%
     Risk-free interest rate                                       4.68%           2.71%-3.96%
     Weighted average expected option life                       7 years             7 years
     Weighted average fair value of options granted
       during the period                                          $8.76            $6.20-6.48
</TABLE>

                                       8
<PAGE>

Options granted during the three-month period ended September 30, 2005:

Dividend yield                                                         2.71%
Expected life                                                          7 years
Expected volatility                                                    30.3%
Risk-free rate                                                         4.08%
Weighted average fair value of options granted during the period       $6.51

There were no options granted during the third quarter of 2006.

A summary of option activity under the stock option plans as of September 30,
2006 and changes during the period then ended is presented below:

<TABLE>
<CAPTION>
                                                                               Weighted
                                                              Weighted          Average        Aggregate
                                                               Average         Remaining       Intrinsic
                                                              Exercise        Contractual        Value
                Options                        Shares           Price            Term            ($000)
                -------                      -----------     ------------    -------------    -----------
<S>                                              <C>               <C>           <C>               <C>
       Outstanding at January 1, 2006            289,393           $13.22        5.6 years         $3,409
                 Granted                          64,699           $27.80        9.4 years           (181)
                 Exercised                       (33,162)          $ 6.21               --             --
                 Cancelled                          (386)          $19.44               --             --
                                             -----------
     Outstanding at September 30, 2006           320,544           $16.88        6.3 years         $2,603
                                             ===========                     =============    ===========
     Exercisable at September 30, 2006           157,344           $ 9.94        4.0 years         $2,369
                                             ===========                     =============    ===========
</TABLE>

The intrinsic value was derived from the market price of the Company's common
stock of $25.00 as of September 30, 2006. The total intrinsic value of options
exercised during the three-month and nine-month periods ended September 30, 2006
was $22,000 and $631,000, respectively. The total intrinsic value of options
exercised during the three-month and nine-month periods ended September 30, 2005
was $539,000 and $2,600,000, respectively.

At September 30, 2006, the total compensation cost related to nonvested awards
not yet recorded is expected to be $889,000. This amount will be recognized over
the next five years and the weighted average period of recognizing these costs
is expected to be 2.5 years.

3.  COMMITMENTS AND CONTINGENCIES

In the normal course of business there are outstanding various commitments to
extend credit which are not reflected in the financial statements, including
loan commitments of approximately $126,107,000 and letters of credit of
approximately $5,331,000 at September 30, 2006. Such loans relate primarily to
real estate construction loans and revolving lines of credit and other
commercial loans. However, all such commitments will not necessarily culminate
in actual extensions of credit by the Company during 2006 as some of these are
expected to expire without being fully drawn upon.

Standby letters of credit are conditional commitments issued to guarantee the
performance or financial obligation of a client to a third party. These
guarantees are issued primarily relating to purchases of inventory or as
security for real estate rents by commercial clients and are typically short
term in nature. Credit risk is similar to that involved in extending loan
commitments to clients and accordingly, evaluation and collateral requirements
similar to those for loan commitments are used. The majority of all such
commitments are collateralized. The fair value of the liability related to these
standby letters of credit, which represents the fees received for issuing the
guarantees was not material at September 30, 2006 or September 30, 2005.

                                       9
<PAGE>

4.  EARNINGS PER SHARE COMPUTATION

Basic earnings per share is computed by dividing net income by the weighted
average common shares outstanding for the period (5,507,202 and 5,569,109 shares
for the three-month and nine-month periods ended September 30, 2006, and
5,634,929 and 5,619,448 shares for the three-month and nine-month periods ended
September 30, 2005). Diluted earnings per share reflect the potential dilution
that could occur if outstanding stock options were exercised. Diluted earnings
per share is computed by dividing net income by the weighted average common
shares outstanding for the period plus the dilutive effect of options (102,637
and 108,691 shares for the three-month and nine-month periods ended September
30, 2006 and 105,941 and 121,903 shares for the three-month and nine-month
periods ended September 30, 2005). Earnings per share is retroactively adjusted
for stock dividends and stock splits for all periods presented.


5.  COMPREHENSIVE INCOME

Comprehensive income is reported in addition to net income for all periods
presented. Comprehensive income is comprised of net income plus other
comprehensive income (loss). Other comprehensive income (loss), net of taxes,
was comprised of the unrealized gains (losses) on available-for-sale investment
securities of $888,000 and $218,000, respectively, for the three-month and
nine-month periods ended September 30, 2006 and $(667,000) and $(1,003,000),
respectively, for the three-month and nine month periods ended September 30,
2005. Comprehensive income was $3,163,000 and $6,873,000, respectively, for the
three-month and nine-month periods ended September 30, 2006 and $1,709,000 and
$5,614,000, respectively, for the three-month and nine-month periods ended
September 30, 2005. Reclassification adjustments resulting from gain or loss on
sale of investment securities were not material for all periods presented.

6.  BORROWING ARRANGEMENTS

The Company has a total of $53,000,000 in unsecured short-term borrowing
arrangements with four of its correspondent banks. There were no advances under
the borrowing arrangements as of September 30, 2006 or December 31, 2005.

In addition, the Company has a line of credit available with the Federal Home
Loan Bank (the "FHLB") which is secured by pledged mortgage loans and investment
securities. Borrowings may include overnight advances as well as loans with
terms of up to thirty years. Advances totaling $32,288,000 were outstanding from
the FHLB at September 30, 2006, bearing interest rates ranging from 2.66% to
6.13% and maturing between October 2, 2006 and April 7, 2008. Advances totaling
$43,656,000 were outstanding from the FHLB at December 31, 2005, bearing
interest rates ranging from 2.10% to 6.13% and maturing between January 3, 2006
and December 21, 2007. Remaining amounts available under the borrowing
arrangement with the FHLB at September 30, 2006 and December 31, 2005 totaled
$104,592,000 and $3,539,000, respectively.

                                       10
<PAGE>

7.  INVESTMENT SECURITIES

Investment securities with unrealized losses at September 30, 2006 are
summarized and classified according to the duration of the loss period as
follows (dollars in thousands):

<TABLE>
<CAPTION>
   --------------------------------------------------------------------------------------------------------------------------------
                                                       Less than 12 Months       Greater than 12 Months            Total
   --------------------------------------------------------------------------------------------------------------------------------
                                                     Fair        Unrealized      Fair        Unrealized       Fair       Unrealized
                                                     Value          Loss         Value          Loss          Value         Loss
   --------------------------------------------------------------------------------------------------------------------------------
<S>                                                <C>           <C>           <C>           <C>           <C>           <C>
   Available-for-Sale:
   --------------------------------------------------------------------------------------------------------------------------------
        U.S. Treasury securities and agencies      $    2,438    $      (63)   $   33,785    $     (439)   $   36,223    $     (502)
   --------------------------------------------------------------------------------------------------------------------------------
        Mortgage-backed securities                         --            --        32,399          (761)       32,399          (761)
   --------------------------------------------------------------------------------------------------------------------------------
        Obligations of state and political
          subdivisions                                  2,603           (21)       15,106          (203)       17,709          (224)
   --------------------------------------------------------------------------------------------------------------------------------
        Corporate debt securities                          --            --         1,004            (4)        1,004            (4)
   --------------------------------------------------------------------------------------------------------------------------------
        Corporate stock                                    --            --           240           (12)          240           (12)
   --------------------------------------------------------------------------------------------------------------------------------
                                                   $    5,041    $      (84)   $   82,534    $   (1,419)   $   87,575    $   (1,503)
   --------------------------------------------------------------------------------------------------------------------------------

   --------------------------------------------------------------------------------------------------------------------------------
   Held-to-Maturity:
   --------------------------------------------------------------------------------------------------------------------------------
        Mortgage-backed securities                 $    6,294    $      (53)   $   26,602    $     (362)   $   32,896    $     (415)
   --------------------------------------------------------------------------------------------------------------------------------
</TABLE>

Management periodically evaluates each investment security in a loss position
for other than temporary impairment relying primarily on industry analyst
reports, observation of market conditions and interest rate fluctuations.
Management believes it will be able to collect all amounts due according to the
contractual terms of the underlying investment securities and that the noted
decline in fair value is considered temporary and is due only to interest rate
fluctuations.

8.  ACCOUNTING PRONOUNCEMENTS

On November 10, 2005, the Financial Accounting Standards Board ("FASB") issued
FASB Staff Position No. FAS 123R-3, Transition Election Related to Accounting
for Tax Effects of Share-Based Payment Awards ("FSP 123R-3"). The alternative
transition method includes simplified methods to establish the beginning balance
of the additional paid-in capital pool ("APIC pool") related to the tax effects
of employee share-based compensation, and to determine the subsequent impact on
the APIC pool and consolidated statements of cash flows of the tax effects of
employee share-based compensation awards that are outstanding upon adoption of
Statement of Financial Accounting Standards No. 123 (revised 2004), Share Based
Payment, ("SFAS 123R"). Management is currently evaluating the available
transition alternatives of FSP 123R-3. Management does not believe the adoption
of FSP 123R-3 will have a material impact on the Company's financial position,
results of operations or cash flows.

On September 13, 2006, the Securities and Exchange Commission published Staff
Accounting Bulletin ("SAB") No. 108 Considering the Effects of Prior Year
Misstatements when Quantifying Misstatements in Current Year Financial
Statements. The interpretations in this Staff Accounting Bulletin are being
issued to address diversity in practice in quantifying financial statement
misstatements and the potential under current practice to build up improper
amounts on the balance sheet. This guidance will apply to the first fiscal year
ending after November 15, 2006 and early application in interim periods is
encouraged. Management does not believe the adoption of SAB 108 will have a
material impact on the Company's financial position, results of operations or
cash flows.

On February 16, 2006, the FASB issued Statement No. 155, "Accounting for Certain
Hybrid Instruments." This standard amends the guidance in FASB Statements
("SFAS") No. 133, "Accounting for Derivative Instruments and Hedging
Activities," and SFAS No. 140, "Accounting for Transfers and Servicing of
Financial Assets and Extinguishments of Liabilities." SFAS No. 155 allows
financial instruments that have embedded derivatives to be accounted for as a
whole (eliminating the need to bifurcate the derivative from its host) if the
holder elects to account for the whole instrument on a fair value basis. SFAS
No. 155 is effective for all

                                       11
<PAGE>

financial instruments acquired or issued after the beginning of an entity's
first fiscal year that begins after September 15, 2006. Management does not
anticipate that this statement will have a material effect on the Company's
financial position, results of operations or cash flows.

In March 2006, the FASB issued SFAS No. 156, "Accounting for Servicing of
Financial Assets-An Amendment of FASB Statement No. 140." This standard amends
the guidance in SFAS No.140, "Accounting for Transfers and Servicing of
Financial Assets and Extinguishments of Liabilities." Among other requirements,
SFAS No. 156 requires an entity to recognize a servicing asset or servicing
liability each time it undertakes an obligation to service a financial asset by
entering into a servicing contract. The standard requires initial measurement of
all newly purchased or issued separately recognized servicing assets and
servicing liabilities at fair value, if practicable. Subsequent measurements may
be made using either the fair value or amortization method. SFAS No. 156 is
effective as of the beginning of an entity's first fiscal year that begins after
September 15, 2006 with early adoption permitted in the quarter-ended March 31,
2006. Management does not anticipate that this statement will have a material
effect on the Company's financial position, results of operations or cash flows.

On July 13, 2006, the FASB issued FASB Interpretation No. 48 ("FIN 48"). FIN 48
clarifies the accounting for uncertainty in income taxes recognized in an
enterprise's financial statements in accordance with SFAS No. 109, "Accounting
for Income Taxes". FIN 48 prescribes a recognition threshold and measurement
attribute for the financial statement recognition and measurement of a tax
position taken or expected to be taken in a tax return. FIN 48 also provides
guidance on derecognition, classification, interest and penalties, accounting in
interim periods, disclosure and transition. FIN 48 is effective for fiscal years
beginning after December 15, 2006. An enterprise shall disclose the cumulative
effect of the change on retained earnings in the statement of financial position
as of the date of adoption and such disclosure is required only in the year of
adoption. Management is in the process of analyzing the implications of FIN 48.
Management does not anticipate that this statement will have a material effect
on the Company's financial position, results of operations or cash flows.

                                       12
<PAGE>

Item 2. Management's Discussion and Analysis of Financial Condition and Results
of Operations.


         The following is management's discussion and analysis of the
significant changes in American River Bankshares' (the "Company") balance sheet
accounts between December 31, 2005 and September 30, 2006 and its income and
expense accounts for the three-month and nine-month periods ended September 30,
2006 and 2005. The discussion is designed to provide a better understanding of
significant trends related to the Company's financial condition, results of
operations, liquidity, capital resources and interest rate sensitivity. This
discussion and supporting tables and the consolidated financial statements and
related notes appearing elsewhere in this report are unaudited.

         Certain matters discussed or incorporated by reference in this
Quarterly Report on Form 10-Q including, but not limited to, matters described
in "Item 2 - Management's Discussion and Analysis of Financial Condition and
Results of Operations," are "forward-looking statements" within the meaning of
Section 21E of the Securities Exchange Act of 1934, as amended, and Section 27A
of the Securities Act of 1933, as amended. Such forward-looking statements may
contain words related to future projections including, but not limited to, words
such as "believe," "expect," "anticipate," "intend," "may," "will," "should,"
"could," "would," and variations of those words and similar words that are
subject to risks, uncertainties and other factors that could cause actual
results to differ materially from those projected. Factors that could cause or
contribute to such differences include, but are not limited to, the following:
(1) variances in the actual versus projected growth in assets; (2) return on
assets; (3) loan and lease losses; (4) expenses; (5) changes in the interest
rate environment including interest rates charged on loans, earned on securities
investments and paid on deposits; (6) competition effects; (7) fee and other
noninterest income earned; (8) general economic conditions nationally,
regionally, and in the operating market areas of the Company and its
subsidiaries; (9) changes in the regulatory environment; (10) changes in
business conditions and inflation; (11) changes in securities markets; (12) data
processing problems; (13) a decline in real estate values in the Company's
operating market areas; (14) the effects of terrorism, the threat of terrorism
or the impact of the current military conflict in Iraq and the conduct of the
war on terrorism by the United States and its allies, as well as other factors.
These factors and other cautionary statements and information set forth in this
report should be carefully considered and understood as being applicable to all
related forward-looking statements contained in this report, when evaluating the
business prospects of the Company and its subsidiaries.

         Forward-looking statements are not guarantees of performance. By their
nature, they involve risks, uncertainties and assumptions. The future results
and shareholder values may differ significantly from those expressed in these
forward-looking statements. You are cautioned not to put undue reliance on any
forward-looking statement. Any such statement speaks only as of the date of this
report, and in the case of any documents that may be incorporated by reference,
as of the date of those documents. We do not undertake any obligation to update
or release any revisions to any forward-looking statements, to report any new
information, future event or other circumstances after the date of this report
or to reflect the occurrence of unanticipated events, except as required by law.
To gain a more complete understanding of the uncertainties and risks involved in
the Company's business, this report should be read in conjunction with the
Company's annual report on Form 10-K for the year ended December 31, 2005 and
its 2006 reports filed on Form 10-Q and 8-K.

         Interest income and net interest income are presented on a fully
taxable equivalent basis (FTE) within management's discussion and analysis.

Critical Accounting Policies

General

         The Company's financial statements are prepared in accordance with
accounting principles generally accepted in the United States of America
("GAAP"). The financial information contained within our statements is, to a
significant extent, financial information that is based on measures of the
financial effects of transactions and events that have already occurred. We use
historical loss data and the economic environment as factors, among others, in
determining the inherent loss that may be present in our loan and lease
portfolio. Actual losses could

                                       13
<PAGE>

differ significantly from the factors that we use. Other estimates that we use
are related to the expected useful lives of our depreciable assets. In addition,
GAAP itself may change from one previously acceptable method to another method.
Although the economics of our transactions would be the same, the timing of
events that would impact our transactions could change.

Allowance for Loan and Lease Losses

         The allowance for loan and lease losses is an estimate of the credit
loss risk in our loan and lease portfolio. The allowance is based on two basic
principles of accounting: (1) Statement of Financial Accounting Standards
("SFAS") No. 5 "Accounting for Contingencies," which requires that losses be
accrued when it is probable that a loss has occurred at the balance sheet date
and such loss can be reasonably estimated; and (2) SFAS No. 114, "Accounting by
Creditors for Impairment of a Loan," which requires that losses be accrued on
impaired loans based on the differences between the value of collateral, present
value of future cash flows or values that are observable in the secondary market
and the loan balance.

         The allowance for loan and lease losses is determined based upon
estimates that can and do change when the actual risk, loss events, or changes
in other factors, occur. The analysis of the allowance uses an historical loss
view as an indicator of future losses and as a result could differ from the loss
incurred in the future. However, since our analysis of risk and loss potential
is updated regularly, the errors that might otherwise occur are mitigated. If
the allowance for loan and lease losses falls below that deemed adequate (by
reason of loan and lease growth, actual losses, the effect of changes in risk
ratings, or some combination of these factors), the Company has a strategy for
supplementing the allowance for loan and lease losses, over the short term. For
further information regarding our allowance for loan and lease losses, see
"Allowance for Loan and Lease Losses Activity" discussion later in this Item 2.

Stock-Based Compensation

         The Company previously accounted for its stock-based compensation under
the recognition and measurement principles of Accounting Principles Board
("APB") Opinion No. 25, Accounting for Stock Issued to Employees, and related
interpretations. Because the Company's 2000 Stock Option Plan provides for the
issuance of options at a price of no less than the fair market value at the date
of the grant, no compensation expense was recognized in the financial statements
unless the options were modified after the grant date.

         On January 1, 2006, the Company began to apply the provisions of SFAS
123 (R) on a modified prospective method. Under this method, the Company is
required to record compensation expense (net of estimated forfeitures) for the
unvested portion of previously granted awards that remain outstanding at the
date of adoption and for all grants of stock options after January 1, 2006. The
fair value of each option is estimated on the date of grant and amortized over
the service period using an option pricing model. Critical assumptions that
affect the estimated fair value of each option include expected stock price
volatility, dividend yields, option life and the risk-free interest rate.

Goodwill

         Business combinations involving the Company's acquisition of the equity
interests or net assets of another enterprise or the assumption of net
liabilities in an acquisition of branches constituting a business may give rise
to goodwill. Goodwill represents the excess of the cost of an acquired entity
over the net of the amounts assigned to assets acquired and liabilities assumed
in transactions accounted for under the purchase method of accounting. The value
of goodwill is ultimately derived from the Company's ability to generate net
earnings after the acquisition. A decline in net earnings could be indicative of
a decline in the fair value of goodwill and result in impairment. For that
reason, goodwill is assessed for impairment at a reporting unit level at least
annually following the year of acquisition. The Company performed an evaluation
of the goodwill, recorded as a result of the Bank of Amador acquisition, during
the fourth quarter of 2005 and determined that there was no impairment. While
the Company believes all assumptions utilized in its assessment of goodwill for
impairment are reasonable and appropriate, changes in earnings, the effective
tax rate, historical earnings multiples and the cost of capital could all cause
different results for the calculation of the present value of future cash flows.

                                       14
<PAGE>

General Development of Business

         The Company is a bank holding company registered under the Bank Holding
Company Act of 1956, as amended. The Company was incorporated under the laws of
the State of California in 1995. As a bank holding company, the Company is
authorized to engage in the activities permitted under the Bank Holding Company
Act of 1956, as amended, and regulations thereunder. Its principal office is
located at 3100 Zinfandel Drive, Suite 450, Rancho Cordova, California 95670 and
its telephone number is (916) 231-6700. The Company employed an equivalent of
125 full-time employees as of September 30, 2006.

         The Company owns 100% of the issued and outstanding common shares of
its banking subsidiary, American River Bank, and American River Financial, a
California corporation which has been inactive since its incorporation in 2003.

         American River Bank was incorporated and commenced business in Fair
Oaks, California, in 1983 and thereafter moved its headquarters to Sacramento,
California in 1985. American River Bank operates: (1) five full service offices
and one convenience office in Sacramento and Placer Counties including the head
office located at 1545 River Park Drive, Suite 107, Sacramento, and branch
offices located at 520 Capitol Mall, Suite 100, Sacramento, 9750 Business Park
Drive, Sacramento, 10123 Fair Oaks Boulevard, Fair Oaks and 2240 Douglas
Boulevard, Roseville, and the convenience office (limited service office)
located at 3100 Zinfandel Drive, Suite 450, Rancho Cordova, and (2) three full
service offices in Sonoma County located at 412 Center Street, Healdsburg, 8733
Lakewood Drive, Windsor, and 50 Santa Rosa Avenue, Suite 100, Santa Rosa,
operated under the name "North Coast Bank, a division of American River Bank."
North Coast Bank was incorporated and commenced business in 1990 as Windsor Oaks
National Bank in Windsor, California. In 1997, the name was changed to North
Coast Bank. In 2000, North Coast Bank was acquired by the Company as a separate
bank subsidiary. Effective December 31, 2003, North Coast Bank was merged with
and into American River Bank.

         On December 3, 2004, the Company acquired Bank of Amador located in
Jackson, California. Bank of Amador was merged with and into American River Bank
and now operates three full service banking offices as "Bank of Amador, a
division of American River Bank" within its primary service area of Amador
County, in the cities of Jackson, Pioneer and Ione.

         American River Bank's deposits are insured by the Federal Deposit
Insurance Corporation up to applicable legal limits. American River Bank does
not offer trust services or international banking services and does not plan to
do so in the near future. American River Bank's primary business is serving the
commercial banking needs of small to mid-sized businesses within those counties
listed above. American River Bank accepts checking and savings deposits, offers
money market deposit accounts and certificates of deposit, makes secured and
unsecured commercial, secured real estate, and other installment and term loans
and offers other customary banking services. American River Bank also conducts
lease financing for most types of business equipment, from computer software to
heavy earth-moving equipment.

         American River Bank owns 100% of two inactive companies, ARBCO and
American River Mortgage. ARBCO was formed in 1984 to conduct real estate
development and has been inactive since 1995. American River Mortgage has been
inactive since its formation in 1994.

         During 2006, the Company conducted no significant activities other than
holding the shares of its subsidiaries. However, it is authorized, with the
prior approval of the Board of Governors of the Federal Reserve System (the
"Board of Governors"), the Company's principal regulator, to engage in a variety
of activities which are deemed closely related to the business of banking.

         The common stock of the Company is registered under the Securities
Exchange Act of 1934, as amended, and is listed and traded on the Nasdaq Global
Select Market under the symbol "AMRB."

                                       15
<PAGE>

Overview

         The Company recorded net income of $2,275,000 for the quarter ended
September 30, 2006, which was $101,000 (4.3%) below the $2,376,000 reported for
the same period of 2005. Diluted earnings per share for the third quarters of
2006 and 2005 remained the same at $0.41. The return on average equity (ROAE)
and the return on average assets (ROAA) for the third quarter of 2006 were
14.39% and 1.50%, respectively, as compared to 15.32% and 1.54%, respectively,
for the same period in 2005.

         Net income for the nine months ended September 30, 2006 and 2005 was
$6,655,000 and $6,617,000, respectively, with diluted earnings per share of
$1.17 and $1.15, respectively. For the first nine months of 2006, ROAE was
14.11% and ROAA was 1.47% as compared to 14.71% and 1.49% for the same period in
2005.

         Total assets of the Company decreased by $20,664,000 (3.4%) from
$612,763,000 at December 31, 2005 to $592,099,000 at September 30, 2006. Net
loans totaled $374,396,000 at September 30, 2006, up $8,825,000 (2.4%) from the
$365,571,000 at December 31, 2005. Deposit balances at September 30, 2006
totaled $493,444,000, down $7,262,000 (1.5%) from $500,706,000 at December 31,
2005.

         The Company ended the third quarter of 2006 with a Tier 1 capital ratio
of 10.2% and a total risk-based capital ratio of 11.4% versus 10.6% and 11.8%,
respectively, at December 31, 2005.

         Table One below provides a summary of the components of net income for
the periods indicated (See the "Results of Operations" section that follows for
an explanation of the fluctuations in the individual components):

<TABLE>
<CAPTION>
Table One:  Components of Net Income
-------------------------------------------------------------------------------------------------
                                                For the three                 For the nine
                                                months ended                  months ended
                                                September 30,                 September 30,
                                          -------------------------     -------------------------
(In thousands, except percentages)           2006           2005           2006           2005
                                          ----------     ----------     ----------     ----------
<S>                                       <C>            <C>            <C>            <C>
Net interest income*                      $    6,878     $    6,833     $   20,533     $   19,730
Provision for loan and lease losses              (30)            --           (270)          (272)
Noninterest income                               605            594          1,836          1,759
Noninterest expense                           (3,602)        (3,464)       (10,862)       (10,195)
Provision for income taxes                    (1,496)        (1,507)        (4,338)        (4,182)
Tax equivalent adjustment                        (80)           (80)          (244)          (223)
                                          ----------     ----------     ----------     ----------

Net income                                $    2,275     $    2,376     $    6,655     $    6,617
                                          ==========     ==========     ==========     ==========

-------------------------------------------------------------------------------------------------
Average total assets                      $  600,053     $  611,175     $  605,620     $  591,869
Net income (annualized) as a percentage
  of average total assets                       1.50%          1.54%          1.47%          1.49%


-------------------------------------------------------------------------------------------------
* Fully taxable equivalent basis (FTE)
</TABLE>
                                       16
<PAGE>

Results of Operations

Net Interest Income and Net Interest Margin

         Net interest income represents the excess of interest and fees earned
on interest earning assets (loans and leases, securities, Federal funds sold and
investments in time deposits) over the interest paid on deposits and borrowed
funds. Net interest margin is net interest income expressed as a percentage of
average earning assets. The Company's net interest margin was 5.01% for the
three months ended September 30, 2006, 4.92% for the three months ended
September 30, 2005, 5.03% for the nine months ended September 30, 2006 and 4.95%
for the nine months ended September 30, 2005.

         The fully taxable equivalent interest income component for the third
quarter of 2006 increased $1,175,000 (13.6%) to $9,817,000 compared to
$8,642,000 for the three months ended September 30, 2005. The increase in the
fully taxable equivalent interest income for the third quarter of 2006 compared
to the same period in 2005 is broken down by rate (up $957,000) and volume (up
$218,000). The rate increase can be attributed to increases implemented by the
Company during 2004 and 2005 and continuing through the third quarter of 2006 in
response to the Federal Reserve Board (the "FRB") increases in the Federal funds
and Discount rates. Increases by the FRB have resulted in seventeen 25 basis
point increases since June 2004. The overall increasing interest rate
environment since June 2004 has resulted in an 93 basis point increase in the
yield on average earning assets from 6.22% for the third quarter of 2005 to
7.15% for the third quarter of 2006. The volume increase was the result of a
shift into higher earning loans out of lower yielding investment securities.
Average loan balances were up $30,264,000 (8.5%) in 2006 over the balances in
2005, while average investment securities balances were down $30,986,000
(17.0%). The increase in average loans is the result of concentrated focus on
business lending, the demand for commercial real estate and the effects of a
favorable local market.

         Total fully taxable equivalent interest income for the nine months
ended September 30, 2006 increased $4,091,000 (16.7%) to $28,561,000 compared to
$24,470,000 for the nine months ended September 30, 2005. The breakdown of the
fully taxable equivalent interest income for the nine months ended September 30,
2006 over the same period in 2005 resulted from increases in volume (up
$1,033,000) and increases in rate (up $3,058,000). Average earning assets
increased $13,162,000 (2.5%) during the first nine months of 2006 as compared to
the same period in 2005. Average loan balances increased $23,511,000 (6.6%)
during that same period and average investments securities balances decreased
$6,026,000 (3.6%).

         Interest expense was $1,130,000 (62.5%) higher in the third quarter of
2006 versus the same period in the prior year. The average balances on interest
bearing liabilities were $5,775,000 (1.5%) lower in the third quarter of 2006
versus the same quarter in 2005, however, there was a change in the mix that saw
the Company's non-time deposit balances drop and saw an increase in time
deposits and overnight borrowings. The higher balances in the more expensive
time deposits and other borrowings accounted for a $152,000 increase in interest
expense. Increased rates accounted for an additional $978,000 in interest
expense for the three-month period. Rates paid on interest bearing liabilities
increased 122 basis points on a quarter-over-quarter basis from 1.87% to 3.09%.
The increase in rates is a direct result of the higher overall rate environment
as well as an increase in higher cost other borrowings. The increase in other
borrowings is primarily the result of a decline in deposit balance--both
interest bearing and noninterest bearing. The decline in deposit balances is
partially related to a decrease in bankruptcy trustee related noninterest
bearing and money market accounts. As a result of a change in the California
bankruptcy laws, the Company has seen very little activity from its bankruptcy
trustees account relationships during 2006. The bankruptcy cases are being
resolved and the funds are being paid out and few new cases are being opened. In
addition, the Company has seen a decline in the deposit balances in a number of
its business accounts as a result of these businesses paying down debt and/or
investing in real estate or business assets. Although these balances are down
the relationships remain with the Company. The decreasing deposit balances were
replaced with funds from other borrowing sources.

         Interest expense was $3,288,000 (69.4%) higher in the nine-month period
ended September 30, 2006 versus the same period in the prior year. The average
balances on interest bearing liabilities were $9,735,000 (2.6%) higher in the
nine-month period ended September 30, 2006 versus the same period in 2005. The
higher balances accounted for a $557,000 increase in interest expense. Increased
rates accounted for an additional $2,731,000 in interest expense for the
nine-month period. Rates paid on interest bearing liabilities increased 111
basis points on a year-over-year basis from 1.70% to 2.81%.

                                       17
<PAGE>

Table Two, Analysis of Net Interest Margin on Earning Assets, and Table Three,
Analysis of Volume and Rate Changes on Net Interest Income and Expenses, are
provided to enable the reader to understand the components and trends of the
Company's interest income and expenses. Table Two provides an analysis of net
interest margin on earning assets setting forth average assets, liabilities and
shareholders' equity; interest income earned and interest expense paid and
average rates earned and paid; and the net interest margin on earning assets.
Table Three sets forth a summary of the changes in interest income and interest
expense from changes in average asset and liability balances (volume) and
changes in average interest rates.

<TABLE>
<CAPTION>
Table Two:  Analysis of Net Interest Margin on Earning Assets
-------------------------------------------------------------------------------------------------------------------
Three Months Ended September 30,                     2006                                     2005
                                     -------------------------------------    -------------------------------------

(Taxable Equivalent Basis)              Avg                        Avg           Avg                        Avg
(Dollars in thousands)                Balance       Interest     Yield (4)     Balance       Interest     Yield (4)
                                     ----------    ----------   ----------    ----------    ----------   ----------
<S>                                  <C>           <C>                <C>     <C>           <C>                <C>
Assets
Earning assets:
  Loans (1)                          $  387,992    $    8,083         8.27%   $  357,728    $    6,719         7.45%
  Taxable investment
     securities                         123,902         1,326         4.25%      154,876         1,493         3.82%
  Tax-exempt investment
     securities (2)                      27,080           328         4.81%       27,078           323         4.73%
  Corporate stock (2)                       551            10         7.20%          565            10         7.02%
  Federal funds sold                        250             4         6.35%        5,070            42         3.29%
  Investments in time deposits            4,934            66         5.31%        6,184            55         3.53%
                                     ----------    ----------                 ----------    ----------
Total earning assets                    544,709         9,817         7.15%      551,501         8,642         6.22%
                                                   ----------                               ----------
Cash & due from banks                    26,208                                   30,075
Other assets
                                         35,129                                   35,342
Allowance for loan & lease losses        (5,993)                                  (5,743)
                                     ----------                               ----------
                                     $  600,053                               $  611,175
                                     ==========                               ==========

Liabilities & Shareholders' Equity
Interest bearing liabilities:
  NOW & MMDA                         $  163,333           858         2.08%   $  196,324           634         1.28%
  Savings                                33,755            58         0.68%       39,593            38         0.38%
  Time deposits                         131,899         1,409         4.25%      116,943           881         2.99%
  Other borrowings                       48,500           614         5.02%       30,402           256         3.34%
                                     ----------    ----------                 ----------    ----------
Total interest bearing liabilities      377,487         2,939         3.09%      383,262         1,809         1.87%
                                                   ----------                               ----------
Noninterest demand deposits             154,398                                  161,172
Other liabilities                         5,443                                    5,200
                                     ----------                               ----------
Total liabilities                       537,328                                  549,634
Shareholders' equity                     62,725                                   61,541
                                     ----------                               ----------
                                     $  600,053                               $  611,175
                                     ==========                               ==========
Net interest income & margin (3)                   $    6,878         5.01%                 $    6,833         4.92%
                                                   ==========   ==========                  ==========   ==========
</TABLE>

(1)   Loan interest includes loan fees of $227,000 and $240,000 during the three
      months ending September 30, 2006 and September 30, 2005, respectively.
(2)   Includes taxable-equivalent adjustments that primarily relate to income on
      certain securities that is exempt from federal income taxes. The effective
      federal statutory tax rate was 34% for 2005 and 35% for 2006.
(3)   Net interest margin is computed by dividing net interest income by total
      average earning assets.
(4)   Average yield is calculated based on actual days in quarter (92) and
      annualized to actual days in year (365).

                                       18
<PAGE>

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------------------

Nine Months Ended September 30,                      2006                                     2005
                                     -------------------------------------    -------------------------------------

(Taxable Equivalent Basis)              Avg                        Avg           Avg                        Avg
(Dollars in thousands)                Balance       Interest     Yield (4)     Balance       Interest     Yield (4)
                                     ----------    ----------   ----------    ----------    ----------   ----------
<S>                                  <C>           <C>                <C>     <C>           <C>                <C>
Assets
Earning assets:
  Loans (1)                          $  381,153    $   23,170         8.13%   $  357,642    $   19,371         7.24%
  Taxable investment
     securities                         131,637         4,189         4.25%      140,336         3,956         3.77%
  Tax-exempt investment
     securities (2)                      27,283           990         4.85%       25,053           895         4.78%
  Corporate stock (2)                     1,007            32         1.25%          564            31         7.35%
  Federal funds sold                        159             6         5.05%        3,368            77         3.06%
  Investments in time deposits            4,908           174         4.74%        6,022           140         3.11%
                                     ----------    ----------                 ----------    ----------
Total earning assets                    546,147        28,561         6.99%      532,985        24,470         6.14%
                                                   ----------                               ----------
Cash & due from banks                    29,691                                   29,084
Other assets                             35,634                                   35,487
Allowance for loan & lease losses        (5,852)                                  (5,687)
                                     ----------                               ----------
                                     $  605,620                               $  591,869
                                     ==========                               ==========

Liabilities & Shareholders' Equity
Interest bearing liabilities:
  NOW & MMDA                         $  166,319         2,253         1.81%   $  186,116         1,584         1.14%
  Savings                                34,300           127         0.50%       39,491           113         0.38%
  Time deposits                         127,684         3,766         3.94%      111,943         2,278         2.72%
  Other borrowings                       53,535         1,882         4.70%       34,553           765         2.96%
                                     ----------    ----------                 ----------    ----------
Total interest bearing liabilities      381,838         8,028         2.81%      372,103         4,740         1.70%
                                                   ----------                               ----------
Noninterest demand deposits             155,272                                  153,625
Other liabilities                         5,442                                    5,984
                                     ----------                               ----------
Total liabilities                       542,552                                  531,712
Shareholders' equity                     63,068                                   60,157
                                     ----------                               ----------
                                     $  605,620                               $  591,869
                                     ==========                               ==========
Net interest income & margin (3)                   $   20,533         5.03%                 $   19,730         4.95%
                                                   ==========   ==========                  ==========   ==========
</TABLE>

(1)   Loan interest includes loan fees of $722,000 and $794,000 during the nine
      months ending September 30, 2006 and September 30, 2005, respectively.
(2)   Includes taxable-equivalent adjustments that primarily relate to income on
      certain securities that is exempt from federal income taxes. The effective
      federal statutory tax rate was 34% for 2005 and 35% for 2006.
(3)   Net interest margin is computed by dividing net interest income by total
      average earning assets.
(4)   Average yield is calculated based on actual days in period (273) and
      annualized to actual days in year (365).

                                       19
<PAGE>


Table Three:  Analysis of Volume and Rate Changes on Net Interest Income and
Expenses
--------------------------------------------------------------------------------
Three Months Ended September 30, 2006 over 2005 (Dollars in thousands)
Increase (decrease) due to change in:

Interest-earning assets:                   Volume       Rate (4)     Net Change
                                         ----------    ----------    ----------
   Net loans (1)(2)                      $      568    $      796    $    1,364
   Taxable investment securities               (299)          132          (167)
   Tax exempt investment securities (3)          --             5             5
   Corporate stock                               --            --            --
   Federal funds sold                           (40)            2           (38)
   Investment in time deposits                  (11)           22            11
                                         ----------    ----------    ----------
     Total                                      218           957         1,175
                                         ----------    ----------    ----------

Interest-bearing liabilities:
   NOW & MMDA deposits                         (107)          331           224
   Savings deposits                              (6)           26            20
   Time deposits                                113           415           528
   Other borrowings                             152           206           358
                                         ----------    ----------    ----------
     Total                                      152           978         1,130
                                         ----------    ----------    ----------
Interest differential                    $       66    $      (21)   $       45
                                         ==========    ==========    ==========
--------------------------------------------------------------------------------
Aine Months Ended September 30, 2006 over 2005 (Dollars in thousands)
Increase (decrease) due to change in:

Interest-earning assets:                   Volume       Rate (4)     Net Change
                                         ----------    ----------    ----------
   Net loans (1)(2)                      $    1,273    $    2,526    $    3,799
   Taxable investment securities               (245)          478           233
   Tax exempt investment securities (3)          80            15            95
   Corporate stock                               24           (23)            1
   Federal funds sold                           (73)            2           (71)
   Investment in time deposits                  (26)           60            34
                                         ----------    ----------    ----------
     Total                                    1,033         3,058         4,091
                                         ----------    ----------    ----------

Interest-bearing liabilities:
   NOW & MMDA deposits                         (168)          837           669
   Savings deposits                             (15)           29            14
   Time deposits                                320         1,168         1,488
   Other borrowings                             420           697         1,117
                                         ----------    ----------    ----------
     Total                                      557         2,731         3,288
                                         ----------    ----------    ----------
Interest differential                    $      476    $      327    $      803
                                         ==========    ==========    ==========

--------------------------------------------------------------------------------
(1)   The average balance of non-accruing loans is immaterial as a percentage of
      total loans and, as such, has been included in net loans.
(2)   Loan fees of $227,000 and $240,000 during the three months ending
      September 30, 2006 and September 30, 2005, respectively, and $722,000 and
      $794,000 during the nine months ending September 30, 2006 and September
      30, 2005, respectively, have been included in the interest income
      computation.
(3)   Includes taxable-equivalent adjustments that primarily relate to income on
      certain securities that is exempt from federal income taxes. The effective
      federal statutory tax rate was 34% for 2005 and 35% for 2006.
(4)   The rate/volume variance has been included in the rate variance.

                                       20
<PAGE>

Provision for Loan and Lease Losses

         The Company provided $30,000 for loan and lease losses for the third
quarter of 2006 as compared to no provision during the third quarter of 2005.
Net loan and lease charge-offs for the three months ended September 30, 2006
were $83,000 or .08% (on an annualized basis) of average loans and leases as
compared to charge-offs of $46,000 or .05% (on an annualized basis) of average
loans and leases for the three months ended September 30, 2005. For the first
nine months of 2006, the Company made provisions for loan and lease losses of
$270,000 and net loan and lease charge-offs were $78,000 or .03% (on an
annualized basis) of average loans and leases outstanding. This compares to
provisions for loan and lease losses of $272,000 and net loan and lease
charge-offs of $77,000 for the first nine months of 2005 or .03% (on an
annualized basis) of average loans and leases outstanding. For additional
information see the Allowance for Loan and Lease Losses Activity later in this
section.

Noninterest Income

         Table Four below provides a summary of the components of noninterest
income for the periods indicated (Dollars in thousands):

<TABLE>
<CAPTION>
Table Four:  Components of Noninterest Income
---------------------------------------------------------------------------------------
                                            Three Months              Nine Months
                                               Ended                     Ended
                                            September 30,            September 30,
                                      -----------------------   -----------------------
                                         2006         2005        2006         2005
---------------------------------------------------------------------------------------
<S>                                   <C>          <C>          <C>          <C>
Service charges on deposit accounts   $      185   $      168   $      592   $      509
Accounts receivable servicing fees            92           82          285          262
Gain on sale of securities                    --            5           --           48
Merchant fee income                          149          140          404          377
Income from residential lending               60           86          190          214
Bank owned life insurance                     47           45          137          134
Other                                         72           68          228          215
---------------------------------------------------------------------------------------
           Total noninterest income   $      605   $      594   $    1,836   $    1,759
---------------------------------------------------------------------------------------
</TABLE>

         Noninterest income was up $11,000 (1.9%) to $605,000 for the three
months ended September 30, 2006 as compared to $594,000 for the three months
ended September 30, 2005. For the nine months ended September 30, 2006,
noninterest income was up $77,000 (4.4%) to $1,836,000. The increase is
primarily related to increased service charges on deposit accounts (up $83,000
or 16.3%).

Noninterest Expense

         Noninterest expenses increased $138,000 (4.0%) to a total of $3,602,000
in the third quarter of 2006 versus $3,403,000 in the third quarter of 2005.
Salary and employee benefits increased $138,000 (7.7%) from $1,789,000 during
the third quarter of 2005 to $1,927,000 during the third quarter of 2006
primarily as a result of market-condition salary adjustments, additional
administrative staff to address the burden of more stringent compliance and
regulatory issues, and the addition of service personnel to help achieve
strategic growth in business banking. In addition, the adoption of FAS 123(R) in
January of 2006 resulted in an increase in salaries and benefits of $38,000
during the quarter. See Note 2 to the financial statements for additional
information on FAS 123(R). At September 30, 2006, the Company employed 125
persons on a full-time equivalent basis as compared to 115 at September 30,
2005. The employee benefits and taxes component also increased as a result of
the increase in employees. On a quarter-over-quarter basis, occupancy increased
$45,000 (15.0%) and furniture and equipment decreased $43,000 (18.9%). The
increase in occupancy is related to normal rent increases in the Company's
leased facilities and costs associated with the Company's new administration
office lease, which was occupied in October 2005. The new location contributed
$45,000 to the increased occupancy expense. Other expense decreased $2,000
(0.2%) to a total of $1,145,000 in the third quarter of 2006 versus the third
quarter of 2005. The efficiency ratios (fully taxable equivalent), excluding the
amortization of intangible assets, for the 2006 and 2005 third quarters were
47.0% and 45.4%, respectively.

                                       21
<PAGE>

         Noninterest expense for the nine-month period ended September 30, 2006
was $10,862,000 versus $10,195,000 for the same period in 2005 for an increase
of $667,000 (6.5%). Salaries and benefits increased $602,000 (11.4%) in 2006 as
compared to 2005. The increase relates to market-condition salary adjustments,
additional administrative staff to address the burden of more stringent
compliance and regulatory issues, the addition of service personnel to help
achieve strategic growth in business banking, and stock option expenses under
FAS 123(R). In addition to the stock option expense included in salaries and
benefits ($96,000 through the first nine months of 2006) there is also $63,000
in stock option expense related to the Company's directors--this expense is
recorded in other expense. Occupancy increased $148,000 (16.6%) and furniture
and equipment decreased $59,000 (8.6%). The increase in occupancy is related to
normal rent increases in the Company's leased facilities and costs associated
with the Company's new administration office lease, which was occupied in
October 2005. The new location contributed $135,000 to the increased occupancy
expense. Other expense increased $66,000 (2.0%). The overhead efficiency ratio
(fully taxable equivalent), excluding the amortization of intangible assets, for
the first nine months of 2006 was 47.5% as compared to 46.2% in the same period
of 2005.

Provision for Income Taxes

         The effective tax rate for the third quarter and first nine months of
2006 was 39.7% and 39.5%, respectively, versus 38.8% and 38.7%, respectively,
for the same two periods of 2005. The increase in 2006 is related to the
Company's higher taxable income resulting from a move up from the 34% tax tier
to the 35% tax tier, for federal income tax purposes and a portion of the stock
option expense in 2006 is not tax deductible for income tax purposes.

Balance Sheet Analysis

         The Company's total assets were $592,099,000 at September 30, 2006 as
compared to $612,763,000 at December 31, 2005, representing a decrease of
$20,664,000 or 3.4%. The average balance of total assets for the nine months
ended September 30, 2006 was $605,620,000, which represents an increase of
$13,751,000 or 2.3% over the balance of $591,869,000 during the nine-month
period ended September 30, 2005. Total average assets for the third quarter of
2006 were $600,053,000 compared to $611,175,000 during the third quarter of 2005
for a decrease of 1.8%.

Investment Securities

         The Company classifies its investment securities as held to maturity or
available for sale. The Company's intent is to hold all securities classified as
held to maturity until maturity and management believes that it has the ability
to do so. Securities available for sale may be sold to implement asset/liability
management strategies and in response to changes in interest rates, prepayment
rates and similar factors. Table Five below summarizes the values of the
Company's investment securities held on September 30, 2006 and December 31,
2005.

<TABLE>
<CAPTION>
Table Five: Investment Securities Composition
(Dollars in thousands)

Available-for-sale (at fair value)                     September 30, 2006    December 31, 2005
----------------------------------------------------------------------------------------------
<S>                                                    <C>                  <C>
Debt securities:
    U.S. Government agencies                           $           36,222   $           49,119
    Mortgage-backed securities                                     34,474               36,326
    Obligations of states and political
        subdivisions                                               37,256               37,106
    Corporate debt securities                                       1,004                1,014
    Corporate stock                                                   623                  624
----------------------------------------------------------------------------------------------
Total available-for-sale investment securities         $          109,579   $          124,189
==============================================================================================
Held-to-maturity (at amortized cost)
----------------------------------------------------------------------------------------------
Debt securities:
    Mortgage-backed securities                         $           36,502   $           45,012
----------------------------------------------------------------------------------------------
Total held-to-maturity investment securities           $           36,502   $           45,012
==============================================================================================
</TABLE>

                                       22
<PAGE>

Loans and Leases

         The Company concentrates its lending activities in the following
principal areas: (1) commercial; (2) commercial real estate; (3) multi-family
real estate; (4) real estate construction (both commercial and residential); (5)
residential real estate; (6) lease financing receivable; (7) agriculture; and
(8) consumer loans. At September 30, 2006, these categories accounted for
approximately 22%, 41%, 1%, 28%, 1%, 2%, 2% and 3%, respectively, of the
Company's loan portfolio. This mix was relatively unchanged compared to 21%,
42%, 1%, 28%, 1%, 2%, 2% and 3% at December 31, 2005. Continuing economic
activity in the Company's market area, new borrowers developed through the
Company's marketing efforts, and credit extensions expanded to existing
borrowers resulted in the Company originating over $183 million in new loans
during the first three quarters of 2006; however, loan and lease paydowns and
payoffs resulted in net increases in balances for commercial ($5,157,000 or
6.6%), commercial real estate ($1,544,000 or 1.0%), multi-family real estate
($68,000 or 1.8%), real estate construction ($3,263,000 or 3.2%), residential
real estate ($480,000 or 10.3%), and consumer loans ($100,000 or 0.8%). The
Company experienced a decrease in lease financing receivable ($1,281,000 or
16.1%) and agriculture ($339,000 or 4.2%) as a result of net paydowns. Table Six
below summarizes the composition of the loan portfolio as of September 30, 2006
and December 31, 2005.

Table Six: Loan and Lease Portfolio Composition
-------------------------------------------------------------------------------
                                                   September 30,    December 31,
(Dollars in thousands)                                  2006           2005
-------------------------------------------------------------------------------
Commercial                                         $     83,128    $     77,971
Real estate
    Commercial                                          156,044         154,500
    Multi-family                                          3,835           3,767
    Construction                                        106,311         103,048
    Residential                                           5,160           4,680
Lease financing receivable                                6,686           7,967
Agriculture                                               7,790           8,129
Consumer                                                 12,000          11,900
-------------------------------------------------------------------------------
Total loans and leases                                  380,954         371,962
Deferred loan and lease fees, net                          (687)           (712)
Allowance for loan and lease losses                      (5,871)         (5,679)
-------------------------------------------------------------------------------
Total net loans and leases                         $    374,396    $    365,571
===============================================================================

         A significant portion of the Company's loans and leases are direct
loans and leases made to individuals and local businesses. The Company relies
substantially on local promotional activity and personal contacts by American
River Bank officers, directors and employees to compete with other financial
institutions. The Company makes loans and leases to borrowers whose applications
include a sound purpose and a viable primary repayment source, generally
supported by a secondary source of repayment.

         Commercial loans consist of credit lines for operating needs, loans for
equipment purchases, working capital, and various other business loan products.
Consumer loans include a range of traditional consumer loan products such as
personal lines of credit and loans to finance purchases of autos, boats,
recreational vehicles, mobile homes and various other consumer items.
Construction loans are generally comprised of commitments to customers within
the Company's service area for construction of commercial properties,
multi-family properties and custom and semi-custom single-family residences.
Other real estate loans consist primarily of loans secured by first trust deeds
on commercial and residential properties typically with maturities from 3 to 10
years and original loan to value ratios generally from 65% to 75%. Agriculture
loans consist primarily of vineyard loans and development loans to plant
vineyards. In general, except in the case of loans under SBA programs or Farm
Services Agency guarantees, the Company does not make long-term mortgage loans;
however, American River Bank has a residential lending division to assist
customers in securing most forms of longer term single-family mortgage
financing. American River Bank acts as a broker between American River Bank's
clients and the loan wholesalers. American River Bank receives an origination
fee for loans closed.

                                       23
<PAGE>

Risk Elements

         The Company assesses and manages credit risk on an ongoing basis
through a total credit culture that emphasizes excellent credit quality,
extensive internal monitoring and established formal lending policies.
Additionally, the Company contracts with an outside loan review consultant to
periodically review the existing loan and lease portfolio. Management believes
its ability to identify and assess risk and return characteristics of the
Company's loan and lease portfolio is critical for profitability and growth.
Management strives to continue its emphasis on credit quality in the loan and
lease approval process, active credit administration and regular monitoring.
With this in mind, management has designed and implemented a comprehensive loan
and lease review and grading system that functions to continually assess the
credit risk inherent in the loan and lease portfolio.

         Ultimately, underlying trends in economic and business cycles may
influence credit quality. American River Bank's business is concentrated: (1) in
the Sacramento Metropolitan Statistical Area, (2) in Sonoma County, through
North Coast Bank, a division of American River Bank, whose business is focused
on businesses within the three communities in which it has offices (Santa Rosa,
Windsor, and Healdsburg), and (3) in Amador County, through Bank of Amador, a
division of American River Bank, whose business is focused on businesses and
consumers within the three communities in which it has offices (Jackson,
Pioneer, and Ione). American River Bank also has a diversified residential
construction loan business in numerous Northern California counties. The
Sacramento Metropolitan Statistical Area is a diversified economy, but with a
large State of California government presence and employment base, the economy
of Sonoma County is diversified with professional services, manufacturing,
agriculture and real estate investment and construction, while the economy of
Amador County is reliant upon government, services, retail trade, manufacturing
industries and Indian gaming.

         The Company has significant extensions of credit and commitments to
extend credit that are secured by real estate. The ultimate repayment of these
loans is generally dependent on personal or business cash flows or the sale or
refinancing of the real estate. The Company monitors the effects of current and
expected market conditions and other factors on the collectability of real
estate loans. The more significant factors management considers involve the
following: lease rate and terms, capitalization rates, absorption and sale
rates; real estate values and rates of return; operating expenses; inflation;
and sufficiency of repayment sources independent of the real estate including,
in some instances, personal guarantees.

         In extending credit and commitments to borrowers, the Company generally
requires collateral and/or guarantees as security. The repayment of such loans
is expected to come from cash flow or from proceeds from the sale of selected
assets of the borrowers. The Company's requirement for collateral and/or
guarantees is determined on a case-by-case basis in connection with management's
evaluation of the creditworthiness of the borrower. Collateral held varies but
may include accounts receivable, inventory, property, plant and equipment,
income-producing properties, residences and other real property. The Company
secures its collateral by perfecting its security interest in business assets,
obtaining deeds of trust, or outright possession among other means.

         In management's judgment, a concentration exists in real estate loans
which represented approximately 71.2% of the Company's loan and lease portfolio
at September 30, 2006, down from 71.5% at December 31, 2005. Although management
believes this concentration to have no more than the normal risk of
collectability, a substantial decline in the economy in general, or a decline in
real estate values in the Company's primary market areas in particular, could
have an adverse impact on the collectability of these loans and require an
increase in the provision for loan and lease losses which could adversely affect
the Company's future prospects, results of operations, profitability and stock
price. Management believes that its lending policies and underwriting standards
will tend to minimize losses in an economic downturn; however, there is no
assurance that losses will not occur under such circumstances. The Company's
loan policies and underwriting standards include, but are not limited to, the
following: (1) maintaining a thorough understanding of the Company's service
area and originating a significant majority of its loans within that area, (2)
maintaining a thorough understanding of borrowers' knowledge, capacity, and
market position in their field of expertise, (3) basing real estate loan
approvals not only on market demand for the project, but also on the borrowers'
capacity to support the project financially in the event it does not perform to
expectations (whether sale or income performance), and (4) maintaining
conforming and prudent loan to value and loan to cost ratios based on
independent outside appraisals and ongoing inspection and analysis by the
Company's lending officers.

                                       24
<PAGE>

Nonaccrual, Past Due and Restructured Loans and Leases

         Management generally places loans and leases on nonaccrual status when
they become 90 days past due, unless the loan or lease is well secured and in
the process of collection. Loans and leases are charged off when, in the opinion
of management, collection appears unlikely.

         At September 30, 2006, non-performing loans and leases (those loans on
non-accrual status and those loans still accruing and past due 90 days or more)
were $299,000 or 0.08% of total loans and leases. Non-performing loans and
leases were $91,000 or 0.02% of total loans and leases at December 31, 2005.
There were no loan concentrations in excess of 10% of total loans not otherwise
disclosed as a category of loans as of September 30, 2006 or December 31, 2005.
Management is not aware of any potential problem loans, which were accruing and
current at September 30, 2006, where serious doubt exists as to the ability of
the borrower to comply with the present repayment terms or that would result in
a material loss to the Company. Table Seven below sets forth nonaccrual loans
and loans past due 90 days or more as of September 30, 2006 and December 31,
2005.

Table Seven:  Non-Performing Loans
--------------------------------------------------------------------------------
(Dollars in thousands)                               September 30,  December 31,
                                                         2006          2005
--------------------------------------------------------------------------------
Past Due 90 days or more and still accruing
   Commercial                                        $         --   $         24
   Real estate                                                 --             --
   Lease financing receivable                                  18             --
   Consumer and other                                          --             --
--------------------------------------------------------------------------------
Nonaccrual
   Commercial                                                 251             --
   Real estate                                                 12             15
   Lease financing receivable                                  18             52
   Consumer and other                                          --             --
--------------------------------------------------------------------------------
Total non-performing loans                           $        299   $         91
================================================================================

Allowance for Loan and Lease Losses Activity

         The Company maintains an allowance for loan and lease losses ("ALLL")
to cover probable losses inherent in the loan and lease portfolio, which is
based upon management's estimates of those losses. The ALLL is established
through a provision for loan and lease losses and is increased by provisions
charged against current earnings and recoveries and reduced by charge-offs and
reversals of previous provisions charged to earnings. Actual losses for loans
and leases can vary significantly from this estimate. The methodology and
assumptions used to calculate the allowance are continually reviewed as to their
appropriateness given the most recent losses realized and other factors that
influence the estimation process. The model assumptions and resulting allowance
level are adjusted accordingly as these factors change.

         The adequacy of the ALLL and the level of the related provision for
loan and lease losses is determined based on management's judgment after
consideration of numerous factors including but not limited to: (1) historical
loss rates, (2) local and regional economic conditions, (3) credit policy and
underwriting, (4) management and staff effectiveness, (5) trends in
delinquencies and charge-offs, (5) credit concentrations, (6) impaired loans,
(7) risk factors assigned to criticized or classified (problem) credits not
considered impaired, and (8) assessments by banking regulators and other third
parties. The Board of Directors reviews management's analysis of the adequacy of
the ALLL quarterly.

         The Company establishes general reserves in accordance with Statement
of Accounting Standards ("SFAS") No. 5., Accounting for Contingencies, and
specific reserves in accordance with SFAS No. 114, Accounting by Creditors for
Impairment of a Loan. The ALLL is internally allocated based on loan category,
loan grades, estimated risk factors, and loan impairment as discussed in the
prior paragraph; however, the entire allowance is available to cover actual loan
and lease losses. While management uses available information to recognize
possible losses on loans and leases, future additions to the allowance may be
necessary, based on changes in economic

                                       25
<PAGE>

conditions and other matters. In addition, various regulatory agencies, as an
integral part of their examination process, periodically review the Company's
ALLL. Such agencies may require the Company to provide additions to the
allowance based on their judgment of information available to them at the time
of their examination. Table Eight below summarizes, for the periods indicated,
the activity in the allowance for loan and lease losses.

<TABLE>
<CAPTION>
Table Eight: Allowance for Loan and Lease Losses
-----------------------------------------------------------------------------------------------------------------------------
(Dollars in thousands)                                                      Three Months                   Nine Months
                                                                               Ended                         Ended
                                                                            September 30,                 September 30,
                                                                      -------------------------     -------------------------
                                                                         2006           2005           2006           2005
-----------------------------------------------------------------------------------------------------------------------------
<S>                                                                   <C>            <C>            <C>            <C>
Average loans and leases outstanding                                  $  387,992     $  357,728     $  381,153     $  357,642
-----------------------------------------------------------------------------------------------------------------------------

Allowance for possible loan and lease losses at beginning of period
                                                                      $    5,924     $    5,737     $    5,679     $    5,496

Loans and leases charged off:
   Commercial                                                                (21)            (3)           (21)           (55)
   Real estate                                                                --             --             --             --
   Lease financing receivable                                                (63)           (48)           (77)           (87)
   Consumer                                                                   (1)            --             (1)            --
-----------------------------------------------------------------------------------------------------------------------------
Total                                                                        (85)           (51)           (99)          (142)
-----------------------------------------------------------------------------------------------------------------------------
Recoveries of loans and leases previously
  Charged off:
   Commercial                                                                 --             --              6              8
   Real estate                                                                --             --             --             --
   Lease financing receivable                                                  2              5              6             55
   Consumer                                                                   --             --              9              2
-----------------------------------------------------------------------------------------------------------------------------
Total                                                                          2              5             21             65
-----------------------------------------------------------------------------------------------------------------------------
Net loans recovered (charged off)                                            (83)           (46)           (78)           (77)
Additions to allowance charged
  to operating expenses                                                       30             --            270            272
-----------------------------------------------------------------------------------------------------------------------------
Allowance for possible loan and lease
  losses at end of period                                             $    5,871     $    5,691     $    5,871     $    5,691
-----------------------------------------------------------------------------------------------------------------------------
Ratio of net (recoveries) charge-offs to average
  loans and leases outstanding (annualized)                                  .08%           .05%           .03%           .03%
Provision of allowance for possible
  loan and lease losses to average loans                                     .03%           .00%           .09%           .10%
  and leases outstanding (annualized)
Allowance for possible loan and lease losses to
  loans and leases net of deferred fees at end of
  period                                                                    1.54%          1.56%          1.54%          1.56%
</TABLE>

         The adequacy of the ALLL is determined based on three components.
First, the dollar weighted risk factor of the loan portfolio (excepting
criticized and classified credits and impaired loans) is determined. Second,
risk factors are assigned to criticized and classified loans and leases not
considered impaired. Third, the Company determines whether a loan is impaired
and if so measures the degree of impairment in the context of SFAS No. 114
"Accounting by Creditors for Impairment of a Loan". These are estimated
potential losses associated with specific borrowers based upon estimated cash
flows or collateral value and events affecting the risk rating. These three
calculations are designed to encompass the entire balance of the loan and lease
portfolio. When these three dollar numbers are aggregated, it is then compared
to the actual ALLL balance at the measurement date. Management is responsible to
maintain the actual ALLL within a reasonable range of the total estimated loss
risk inherent in the loan and lease portfolio. However, no prediction of the
ultimate level of loans and leases charged off in future periods can be made
with any certainty. The allowance for loan and lease losses totaled $5,871,000
or 1.54% of total loans and leases at September 30, 2006 and $5,679,000 or 1.53%
of total loans and leases at December 31, 2005.

                                       26
<PAGE>

Other Real Estate

         At September 30, 2006 and December 31, 2005, the Company did not have
any other real estate ("ORE") properties.

Deposits

         At September 30, 2006, total deposits were $493,444,000 representing a
decrease of $7,262,000 (1.5%) from the December 31, 2005 balance of
$500,706,000. Noninterest-bearing deposits decreased $9,848,000 (6.0%) while
interest-bearing deposits increased $2,586,000 (0.8%).

Other Borrowed Funds

         Other borrowings outstanding as of September 30, 2006 and December 31,
2005, consist of advances (both long-term and short-term) from the FHLB. Table
Nine below summarizes these borrowings:

<TABLE>
<CAPTION>
Table Nine: Other Borrowed Funds
------------------------------------------------------------------------------------------------
(Dollars in thousands)
                                               September 30, 2006          December 31, 2005
                                             ------------------------   ------------------------

                                                Amount         Rate       Amount          Rate
                                             ---------------------------------------------------
<S>                                          <C>                <C>     <C>                <C>
           Short-Term borrowings:

               FHLB advances                 $   25,566         4.76%   $   39,386         3.73%
               Advances from correspondent
                    banks                            --           --            --           --
                                             ---------------------------------------------------

          Total Short-Term borrowings        $   25,566         4.76%   $   39,386         3.73%
                                             ---------------------------------------------------

           Long-Term Borrowings:

               FHLB advances                 $    6,722         5.23%   $    4,270         4.10%
                                             ---------------------------------------------------
</TABLE>

         The maximum amount of short-term borrowings at any month-end during the
first three quarters of 2006 and 2005 was $64,489,000 and $32,857,000,
respectively. The FHLB advances are collateralized by loans and securities
pledged to the FHLB. The following is a breakdown of rates and maturities on
FHLB advances (dollars in thousands):

                                    Short Term              Long Term

                 Amount             $   25,566              $   6,722
                 Maturity          2006 to 2007            2007 to 2008
                 Average rates         4.76%                   5.23%

         The Company has also been issued a total of $3,500,000 in letters of
credit by the FHLB which have been pledged to secure Local Agency Deposits. The
letters of credit act as a guarantee of payment to certain third parties in
accordance with specified terms and conditions. The letters of credit were not
drawn upon in 2006 or 2005 and management does not expect to draw upon these
lines in the future. See Liquidity section that follows for additional
information on FHLB borrowings.

Capital Resources

         The current and projected capital position of the Company and the
impact of capital plans and long-term strategies is reviewed regularly by
management. The Company's capital position represents the level of capital
available to support continuing operations and expansion.

                                       27
<PAGE>

         The Company and American River Bank are subject to certain regulations
issued by the Board of Governors of the Federal Reserve System and the Federal
Deposit Insurance Corporation, which require maintenance of certain levels of
capital. Failure to meet these minimum capital requirements can initiate certain
mandatory, and possibly additional discretionary, actions by regulators that, if
undertaken, could have a direct material effect on the Company's consolidated
financial statements. Under capital adequacy guidelines and the regulatory
framework for prompt corrective action, American River Bank must meet specific
capital guidelines that involve quantitative measures of assets, liabilities and
certain off-balance-sheet items as calculated under regulatory accounting
practices. The Company's and American River Bank's capital amounts and
classification are also subject to qualitative judgments by the regulators about
components, risk weightings and other factors. At September 30, 2006,
shareholders' equity was $61,620,000, representing a decrease of $1,126,000
(1.8%) from $62,746,000 at December 31, 2005. The ratio of total risk-based
capital to risk adjusted assets was 11.4% at September 30, 2006 compared to
11.9% at December 31, 2005. Tier 1 risk-based capital to risk-adjusted assets
was 10.2% at September 30, 2006 and 10.6% at December 31, 2005.

         Table Ten below lists the Company's actual capital ratios at September
30, 2006 and December 31, 2005 as well as the minimum capital ratios for capital
adequacy.

<TABLE>
<CAPTION>
Table Ten:  Capital Ratios
----------------------------------------------------------------------------------------------------------------
Capital to Risk-Adjusted Assets              At September 30,       At December 31,        Minimum Regulatory
                                                   2006                  2005             Capital Requirements
----------------------------------------------------------------------------------------------------------------
<S>                                               <C>                     <C>                     <C>
Leverage ratio                                     7.6%                   7.7%                    4.00%

Tier 1 Risk-Based Capital                         10.2%                   10.6%                   4.00%

Total Risk-Based Capital                          11.4%                   11.9%                   8.00%
</TABLE>

         Capital ratios are reviewed on a regular basis to ensure that capital
exceeds the prescribed regulatory minimums and is adequate to meet future needs.
Management believes that both the Company and American River Bank met all of
their capital adequacy requirements as of September 30, 2006 and December 31,
2005.

         The Company, through a Board of Director's authorized plan, may
repurchase, as conditions warrant, up to 5% annually of the Company's common
stock. Repurchases are generally made in the open market at market prices. (See
Part II, Item 2, for additional disclosure).

Inflation

         The impact of inflation on a financial institution differs
significantly from that exerted on manufacturing, or other commercial concerns,
primarily because its assets and liabilities are largely monetary. In general,
inflation primarily affects the Company and it subsidiaries through its effect
on market rates of interest, which affects the Company's ability to attract loan
customers. Inflation affects the growth of total assets by increasing the level
of loan demand, and potentially adversely affects capital adequacy because loan
growth in inflationary periods can increase at rates higher than the rate that
capital grows through retention of earnings which may be generated in the
future. In addition to its effects on interest rates, inflation increases
overall operating expenses. Inflation has not had a material effect upon the
results of operations of the Company and its subsidiaries during the periods
ended September 30, 2006 and 2005.

Liquidity

         Liquidity management refers to the Company's ability to provide funds
on an ongoing basis to meet fluctuations in deposit levels as well as the credit
needs and requirements of its clients. Both assets and liabilities contribute to
the Company's liquidity position. Federal funds lines, short-term investments
and securities, and loan repayments contribute to liquidity, along with deposit
increases, while loan funding and deposit withdrawals decrease liquidity. The
Company assesses the likelihood of projected funding requirements by reviewing
historical funding patterns, current and forecasted economic conditions and
individual client funding needs. Commitments to fund loans

                                       28
<PAGE>

and outstanding letters of credit at September 30, 2006 and December 31, 2005
were approximately $126,107,000 and $5,331,000 and $137,802,000 and $3,393,000,
respectively. Such loan commitments relate primarily to revolving lines of
credit and other commercial loans and to real estate construction loans. Since
some of the commitments are expected to expire without being drawn upon, the
total commitment amounts do not necessarily represent future cash requirements.

         The Company's sources of liquidity consist of cash and due from
correspondent banks, overnight funds sold to correspondent banks, unpledged
marketable investments and loans held for sale and/or pledged for secured
borrowings. At September 30, 2006, consolidated liquid assets totaled $74.3
million or 12.6% of total assets compared to $99.2 million or 16.2% of total
assets on December 31, 2005. In addition to liquid assets, the Company maintains
short-term lines of credit in the amount of $53,000,000 with correspondent
banks. At September 30, 2006, the Company had $53,000,000 available under these
credit lines. Additionally, American River Bank is a member of the FHLB. At
September 30, 2006, American River Bank could have arranged for up to
$140,380,000 in secured borrowings from the FHLB. These borrowings are secured
by pledged mortgage loans and investment securities. At September 30, 2006, the
Company had advances, borrowings and commitments (including letters of credit)
outstanding of $35,788,000, leaving $104,592,000 available under these FHLB
secured borrowing arrangements. American River Bank also has informal agreements
with various other banks to sell participations in loans, if necessary. The
Company serves primarily a business and professional customer base and, as such,
its deposit base is susceptible to economic fluctuations. Accordingly,
management strives to maintain a balanced position of liquid assets and
borrowing capacity to volatile and cyclical deposits.

         Liquidity is also affected by portfolio maturities and the effect of
interest rate fluctuations on the marketability of both assets and liabilities.
The Company can sell any of its unpledged securities held in the
available-for-sale category to meet liquidity needs. These securities are also
available to pledge as collateral for borrowings if the need should arise.
American River Bank has established a master repurchase agreement with a
correspondent bank to enable such transactions. American River Bank can also
pledge securities to borrow from the FRB and the FHLB. The principal cash
requirements of the Company are for expenses incurred in the support of
administration and operations. For nonbanking functions, the Company is
dependent upon the payment of cash dividends from American River Bank to service
its commitments. The Company expects that the cash dividends paid by American
River Bank to the Company will be sufficient to meet this payment schedule.

Off-Balance Sheet Items

         The Company is a party to financial instruments with off-balance-sheet
risk in the normal course of business in order to meet the financing needs of
its customers and to reduce its exposure to fluctuations in interest rates.
These financial instruments consist of commitments to extend credit and letters
of credit. These instruments involve, to varying degrees, elements of credit and
interest rate risk in excess of the amount recognized on the balance sheet.

         The Company's exposure to credit loss in the event of nonperformance by
the other party for commitments to extend credit and letters of credit is
represented by the contractual amount of those instruments. The Company applies
the same credit policies to commitments and letters of credit as it does for
loans included on the consolidated balance sheet. As of September 30, 2006 and
December 31, 2005, commitments to extend credit and standby letters of credit
were the only financial instruments with off-balance sheet risk. The Company has
not entered into any contracts for financial derivative instruments such as
futures, swaps, options or similar instruments. Loan commitments and standby
letters of credit were $131,438,000 and $141,195,000 at September 30, 2006 and
December 31, 2005, respectively. As a percentage of net loans and leases these
off-balance sheet items represent 35.1% and 38.6%, respectively.

         The Company has certain ongoing commitments under operating leases.
These commitments do not significantly impact operating results.

                                       29
<PAGE>

         Certain financial institutions have elected to use special purpose
vehicles ("SPV") to dispose of problem assets. The SPV is typically a subsidiary
company with an asset and liability structure and legal status that makes its
obligations secure even if the parent corporation goes bankrupt. Under certain
circumstances, these financial institutions may exclude the problem assets from
their reported impaired and non-performing assets. The Company does not use
these vehicles or any other structures to dispose of problem assets.

Other Matters

         Effects of Terrorism. The terrorist actions on September 11, 2001 and
thereafter, as well as, the current military conflict in Iraq have had
significant adverse effects upon the United States economy. Whether the
terrorist activities in the future and the actions of the United States and its
allies in combating terrorism on a worldwide basis will adversely impact the
Company and the extent of such impact is uncertain. Such economic deterioration
could adversely affect the Company's future results of operations by, among
other matters, reducing the demand for loans and other products and services
offered by the Company, increasing nonperforming loans and the amounts reserved
for loan and lease losses, and causing a decline in the Company's stock price.

         Website Access. American River Bankshares maintains a website where
certain information about the Company is posted. Through the website, its annual
report on Form 10-K, quarterly reports on Form 10-Q, current reports on Form
8-K, and amendments thereto, as well as Section 16 Reports and amendments
thereto, are available as soon as reasonably practicable after such material is
electronically filed with or furnished to the Securities and Exchange Commission
(the "SEC"). These reports are free of charge and can be accessed through the
address www.amrb.com by clicking on the SEC Filings link located at that
address. Once you have selected the SEC Filings link you will have the option to
access the Section 16 Reports or the other above-referenced reports filed by the
Company by selecting the appropriate link.

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

Market Risk Management

         Overview. Market risk is the risk of loss from adverse changes in
market prices and rates. The Company's market risk arises primarily from
interest rate risk inherent in its loan, investment and deposit functions. The
goal for managing the assets and liabilities of the Company is to maximize
shareholder value and earnings while maintaining a high quality balance sheet
without exposing the Company to undue interest rate risk. The Board of Directors
has overall responsibility for the interest rate risk management policies. The
Company has a Risk Management Committee, made up of Company management that
establishes and monitors guidelines to control the sensitivity of earnings to
changes in interest rates.

         Asset/Liability Management. Activities involved in asset/liability
management include but are not limited to lending, accepting and placing
deposits and investing in securities. Interest rate risk is the primary market
risk associated with asset/liability management. Sensitivity of earnings to
interest rate changes arises when yields on assets change in a different time
period or in a different amount from that of interest costs on liabilities. To
mitigate interest rate risk, the structure of the balance sheet is managed with
the goal that movements of interest rates on assets and liabilities are
correlated and contribute to earnings even in periods of volatile interest
rates. The asset/liability management policy sets limits on the acceptable
amount of variance in net interest margin and market value of equity under
changing interest environments. The Company uses simulation models to forecast
earnings, net interest margin and market value of equity.

         Simulation of earnings is the primary tool used to measure the
sensitivity of earnings to interest rate changes. Using computer-modeling
techniques, the Company is able to estimate the potential impact of changing
interest rates on earnings. A balance sheet forecast is prepared quarterly using
inputs of actual loans, securities and interest bearing liabilities (i.e.
deposits/borrowings) positions as the beginning base. The forecast balance sheet
is processed against three interest rate scenarios. The scenarios include a 200
basis point rising rate forecast, a flat rate forecast and a 200 basis point
falling rate forecast which take place within a one year time frame. The net

                                       30
<PAGE>

interest income is measured during the year assuming a gradual change in rates
over the twelve-month horizon. The simulation modeling indicated below attempts
to estimate changes in the Company's net interest income utilizing a forecast
balance sheet projected from the end of period balances.

         Table Eleven below summarizes the effect on net interest income (NII)
of a +/-200 basis point change in interest rates as measured against a constant
rate (no change) scenario.

<TABLE>
<CAPTION>
   Table Eleven: Interest Rate Risk Simulation of Net Interest as of September 30, 2006 and December 31, 2005
   ----------------------------------------------------------------------------------------------------------
     (In thousands)                                                 $ Change in NII          $ Change in NII
                                                                     from Current             from Current
                                                                   12 Month Horizon         12 Month Horizon
                                                                  September 30, 2006        December 31, 2005
                                                                  ------------------        -----------------
<S>                                                                     <C>                     <C>
                 Variation from a constant rate scenario
                       + 200bp                                          $  540                  $    774
                       - 200bp                                          $ (878)                 $ (1,250)
</TABLE>

         The simulations of earnings do not incorporate any management actions,
which might moderate the negative consequences of interest rate deviations.
Therefore, they do not reflect likely actual results, but serve as reasonable
estimates of interest rate risk.


Item 4. Controls and Procedures.

         The Company, under the supervision and with the participation of its
management, including the Chief Executive Officer and the Chief Financial
Officer, evaluated the effectiveness of the design and operation of the
Company's "disclosure controls and procedures" (as defined in Rule 13a-15(e) and
15d-15(e) under the Securities Exchange Act of 1934, as amended) as of September
30, 2006. Based on that evaluation, the Chief Executive Officer and the Chief
Financial Officer concluded that the Company's disclosure controls and
procedures are effective in timely making known to them material information
relating to the Company and the Company's consolidated subsidiaries required to
be disclosed in the Company's reports filed or submitted under the Exchange Act.

         During the quarter ended September 30, 2006, there have been no changes
in the Company's internal controls over financial reporting that have materially
affected, or are reasonably likely to materially affect, these controls.

                                       31
<PAGE>

                           PART II - OTHER INFORMATION



Item 1.  Legal Proceedings.

         From time to time, the Company and/or its subsidiaries is a party to
claims and legal proceedings arising in the ordinary course of business. The
Company's management is not aware of any material pending legal proceedings to
which either it or its subsidiaries may be a party or has recently been a party,
which will have a material adverse effect on the financial condition or results
of operations of the Company or its subsidiaries, taken as a whole.

Item 1A.  Risk Factors.

         There have been no material changes in the risk factors previously
disclosed in the Company's Form 10-K for the period ended December 31, 2005,
filed with the Securities and Exchange Commission on March 9, 2006.

Item 2.  Unregistered Sales of Equity Securities and Use of Proceeds.

         On September 20, 2001, the Board of Directors of the Company authorized
a stock repurchase program which calls for the repurchase of up to five percent
(5%) annually of the Company's outstanding shares of common stock. Each year the
Company may repurchase up to 5% of the shares outstanding (adjusted for stock
splits or stock dividends). The number of shares reported in column (d) of the
table as shares that may be repurchased under the plan represent shares eligible
for the calendar year 2006. The repurchases can be made from time to time in the
open market as conditions allow and will be structured to comply with Commission
Rule 10b-18. Management reports monthly to the Board of Directors on the status
of the repurchase program. The Board of Directors has reserved the right to
suspend, terminate, modify or cancel this repurchase program at any time for any
reason. The following table lists shares repurchased during the quarter and the
maximum amount available to repurchase under the repurchase plan.

<TABLE>
<CAPTION>
------------------------------------------------------------------------------------------------------------------------------------
                Period                        (a)                 (b)                   (c)                          (d)
                                          Total Number       Average Price    Total Number of Shares  Maximum Number (or Approximate
                                         of Shares (or      Paid Per Share   (or Units) Purchased as    Dollar Value) of Shares (or
                                             Units)           (or Unit)          Part of Publicly         Units) That May Yet Be
                                           Purchased                            Announced Plans or     Purchased Under the Plans or
                                                                                    Programs                     Programs
------------------------------------------------------------------------------------------------------------------------------------
<S>                                           <C>              <C>                   <C>                         <C>
              Month #1
    July 1 through July 31, 2006               30,000             26.30               30,000                     150,083
              Month #2
  August 1 through August 31, 2006            100,000             25.00              100,000                      50,083
              Month #3
  September 1 through September 30,              None              None                 None                      50,083
               2006
------------------------------------------------------------------------------------------------------------------------------------
               Total                          130,000          $  25.30              130,000
------------------------------------------------------------------------------------------------------------------------------------
</TABLE>


Item 3.  Defaults Upon Senior Securities.

b              None.

Item 4.  Submission of Matters to a Vote of Security Holders.

               None.

                                       32
<PAGE>

Item 5.  Other Information.

               None.

Item 6.  Exhibits.

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

                 (2.1)        Agreement and Plan of Reorganization and Merger by
                              and among the Registrant, ARH Interim National
                              Bank and North Coast Bank, N.A., dated as of March
                              1, 2000 (included as Annex A). **

                 (2.2)        Agreement and Plan of Reorganization and Merger by
                              and among the Registrant, American River Bank and
                              Bank of Amador, dated as of July 8, 2004 (included
                              as Annex A). ***

                 (3.1)        Articles of Incorporation, as amended,
                              incorporated by reference from Exhibit 3.1 to the
                              Registrant's Quarterly Report on Form 10-Q for the
                              period ended June 30, 2004, filed with the
                              Commission on August 11, 2004.

                 (3.2)        Bylaws, as amended, incorporated by reference from
                              Exhibit 3.2 to the Registrant's Quarterly Report
                              on Form 10-Q for the period ended March 31, 2006,
                              filed with the Commission on May 9, 2006.

                 (4.1)        Specimen of the Registrant's common stock
                              certificate, incorporated by reference from
                              Exhibit 4.1 to the Registrant's Quarterly Report
                              on Form 10-Q for the period ended June 30, 2004,
                              filed with the Commission on August 11, 2004.

                (10.1)        Lease agreement between American River Bank and
                              Spieker Properties, L.P., a California limited
                              partnership, dated April 1, 2000, related to 1545
                              River Park Drive, Suite 107, Sacramento,
                              California. **

                (10.2)        Lease agreement and addendum between American
                              River Bank and Bradshaw Plaza Group each dated
                              January 31, 2000, related to 9750 Business Park
                              Drive, Sacramento, California. **

                (10.3)        Lease agreement between American River Bank and
                              Marjorie G. Taylor dated April 5, 1984, and
                              addendum dated July 16, 1997, related to 10123
                              Fair Oaks Boulevard, Fair Oaks, California. **

                (10.4)        Lease agreement between American River Bank and
                              LUM YIP KEE, Limited (formerly Sandalwood Land
                              Company) dated August 28, 1996, related to 2240
                              Douglas Boulevard, Suite 100, Roseville,
                              California (**). Lease Amendment No. 1 to said
                              lease dated July 28, 2006, incorporated by
                              reference from Exhibit 99.1 to the Registrant's
                              Report on Form 8-K, filed with the Commission on
                              July 31, 2006.

               *(10.5)        Registrant's 1995 Stock Option Plan. **

               *(10.6)        Form of Nonqualified Stock Option Agreement under
                              the 1995 Stock Option Plan. **

               *(10.7)        Form of Incentive Stock Option Agreement under the
                              1995 Stock Option Plan. **

               *(10.8)        Registrant's Stock Option Gross-Up Plan and
                              Agreement, as amended, dated May 20, 1998. **

                                       33
<PAGE>

               *(10.9)        Registrant's Deferred Compensation Plan,
                              incorporated by reference from Exhibit 99.2 to the
                              Registrant's Report on Form 8-K, filed with the
                              Commission on May 30, 2006.

              *(10.10)        Registrant's Deferred Fee Plan, incorporated by
                              reference from Exhibit 99.1 to the Registrant's
                              Report on Form 8-K, filed with the Commission on
                              May 30, 2006.

              *(10.11)        American River Bank Employee Severance Policy
                              dated March 18, 1998. **

               (10.12)        Lease agreement and addendum between North Coast
                              Bank, N.A. and Rosario LLC, each dated September
                              1, 1998, related to 50 Santa Rosa Avenue, Santa
                              Rosa, California. **

               (10.13)        Lease agreement between American River Bank and
                              520 Capitol Mall, Inc., dated August 19, 2003,
                              related to 520 Capitol Mall, Suite 100,
                              Sacramento, California, incorporated by reference
                              from Exhibit 10.29 to the Registrant's Form 10-Q
                              for the period ended September 30, 2003, filed
                              with the Commission on November 7, 2003.

              *(10.14)        Employment Agreement between Registrant and David
                              T. Taber dated June 2, 2006, incorporated by
                              reference from Exhibit 99.3 to the Registrant's
                              Report on Form 8-K, filed with the Commission on
                              May 30, 2006.

               (10.15)        Lease agreement between R & R Partners, a
                              California General Partnership and North Coast
                              Bank, N.A., dated July 1, 2003, related to 8733
                              Lakewood Drive, Suite A, Windsor, California,
                              incorporated by reference from Exhibit 10.32 to
                              the Company's Form 10-Q for the period ended
                              September 30, 2003, filed with the Commission on
                              November 7, 2003.

              *(10.16)        Salary Continuation Agreement, as amended on June
                              2, 2006, between American River Bank and Mitchell
                              A. Derenzo, incorporated by reference from Exhibit
                              99.9 to the Registrant's Report on Form 8-K, filed
                              with the Commission on May 30, 2006.

              *(10.17)        Salary Continuation Agreement, as amended on June
                              2, 2006, between the Registrant and David T.
                              Taber, incorporated by reference from Exhibit 99.7
                              to the Registrant's Report on Form 8-K, filed with
                              the Commission on May 30, 2006.

              *(10.18)        Salary Continuation Agreement, as amended on June
                              2, 2006, between American River Bank and Douglas
                              E. Tow, incorporated by reference from Exhibit
                              99.8 to the Registrant's Report on Form 8-K, filed
                              with the Commission on May 30, 2006.

              *(10.19)        Registrant's 2000 Stock Option Plan with forms of
                              Nonqualified Stock Option Agreement and Incentive
                              Stock Option Agreement. **

               (10.20)        First Amendment dated April 21, 2004, to the lease
                              agreement between American River Bank and 520
                              Capitol Mall, Inc. dated August 19, 2003, related
                              to 520 Capitol Mall, Suite 100 Sacramento,
                              California, incorporated by reference from Exhibit
                              10.37 to the Registrant's Quarterly Report on Form
                              10-Q for the period ended June 30, 2004, filed
                              with the Commission on August 11, 2004.

              *(10.21)        Registrant's 401(k) Plan dated September 20, 2004,
                              incorporated by reference from Exhibit 10.38 to
                              the Registrant's Quarterly Report on Form 10-Q for
                              the period ended September 30, 2004, filed with
                              the Commission on November 12, 2004.

               (10.22)        Agreement between Bank of Amador and the United
                              States Postal Service, dated April 24, 2001,
                              related to 424 Sutter Street, Jackson,
                              California. ***

                                       34
<PAGE>

               (10.23)        Ground lease agreement between Bank of Amador and
                              the James B. Newman and Helen M. Newman, dated
                              June 1, 1992, related to 26675 Tiger Creek Road,
                              Pioneer, California. ***

              *(10.24)        Salary Continuation Agreement, as amended on June
                              2, 2006, between Bank of Amador, a division of
                              American River Bank, and Larry D. Standing and
                              related Endorsement Split Dollar Agreement,
                              incorporated by reference from Exhibit 99.5 to the
                              Registrant's Report on Form 8-K, filed with the
                              Commission on May 30, 2006.

              *(10.25)        Director Retirement Agreement, as amended on June
                              2, 2006, between Bank of Amador, a division of
                              American River Bank, and Larry D. Standing,
                              incorporated by reference from Exhibit 99.6 to the
                              Registrant's Report on Form 8-K, filed with the
                              Commission on May 30, 2006.

              *(10.26)        Employment Agreement dated June 2, 2006 between
                              Bank of Amador, a division of American River Bank,
                              and Larry D. Standing, incorporated by reference
                              from Exhibit 99.4 to the Registrant's Report on
                              Form 8-K, filed with the Commission on May 30,
                              2006.

               (10.27)        Item Processing Agreement between American River
                              Bank and Fidelity Information Services, Inc.,
                              dated April 22, 2005, incorporated by reference
                              from Exhibit 99.1 to the Registrant's Report on
                              Form 8-K, filed with the Commission on April 27,
                              2005.

               (10.28)        Lease agreement between Registrant and One Capital
                              Center, a California limited partnership, dated
                              May 17, 2005, related to 3100 Zinfandel Drive,
                              Rancho Cordova, California, incorporated by
                              reference from Exhibit 99.1 to the Registrant's
                              Report on Form 8-K, filed with the Commission on
                              May 18, 2005.

               (10.29)        Managed Services Agreement between American River
                              Bankshares and ProNet Solutions, Inc., dated
                              September 8, 2005, incorporated by reference from
                              Exhibit 99.1 to the Registrant's Report on Form
                              8-K, filed with the Commission on September 9,
                              2005.

              *(10.30)        American River Bankshares 2005 Executive Incentive
                              Plan, incorporated by reference from Exhibit 99.1
                              to the Registrant's Report on Form 8-K, filed with
                              the Commission on October 27, 2005 and First
                              Amendment thereto, incorporated by reference from
                              Exhibit 99.1 to the Registrant's Report on Form
                              8-K, filed with the Commission on March 17, 2006.

               (10.31)        First Amendment to Commercial Lease Agreement
                              between R. & R. Partners, and North Coast Bank, a
                              division of American River Bank, dated January 2,
                              2006, related to 8733 Lakewood Drive, Suite A,
                              Windsor, California, incorporated by reference
                              from Exhibit 99.1 to the Registrant's Report on
                              Form 8-K, filed with the Commission on January 3,
                              2006.

               (10.32)        First Amendment to Commercial Lease Agreement
                              between the United States Postal Service and Bank
                              of Amador, a division of American River Bank,
                              dated June 5, 2006, related to 424 Sutter Street,
                              Jackson, California, incorporated by reference
                              from Exhibit 99.1 to the Registrant's Report on
                              Form 8-K, filed with the Commission on June 6,
                              2006.

              *(10.33)        American River Bankshares Director Emeritus
                              Program, incorporated by reference from Exhibit
                              10.33 to the Registrant's Report on Form 10-Q,
                              filed with the Commission on August 8, 2006.

              *(10.34)        Employment Agreement dated September 20, 2006
                              between American River Bankshares and Mitchell A.
                              Derenzo, incorporated by reference from Exhibit
                              99.1 to the Registrant's Report on Form 8-K, filed
                              with the Commission on September 20, 2006.

                                       35
<PAGE>

              *(10.35)        Employment Agreement dated September 20, 2006
                              between American River Bankshares and Douglas E.
                              Tow, incorporated by reference from Exhibit 99.2
                              to the Registrant's Report on Form 8-K, filed with
                              the Commission on September 20, 2006.

              *(10.36)        Employment Agreement dated September 20, 2006
                              between American River Bankshares and Kevin B.
                              Bender, incorporated by reference from Exhibit
                              99.3 to the Registrant's Report on Form 8-K, filed
                              with the Commission on September 20, 2006.

              *(10.37)        Employment Agreement dated September 20, 2006
                              between American River Bank and Gregory N. Patton,
                              incorporated by reference from Exhibit 99.4 to the
                              Registrant's Report on Form 8-K, filed with the
                              Commission on September 20, 2006.

              *(10.38)        Employment Agreement dated September 20, 2006
                              between American River Bank and Raymond F. Byrne,
                              incorporated by reference from Exhibit 99.5 to the
                              Registrant's Report on Form 8-K, filed with the
                              Commission on September 20, 2006.

                (14.1)        Registrant's Code of Ethics, incorporated by
                              reference from Exhibit 14.1 to the Registrant's
                              Annual Report on Form 10-K for the period ended
                              December 31, 2003, filed with the Commission on
                              March 19, 2004.

                (21.1)        The Registrant's only subsidiaries are American
                              River Bank and American River Financial.

                (31.1)        Certifications of Chief Executive Officer pursuant
                              to Section 302 of the Sarbanes-Oxley Act of 2002.

                (31.2)        Certifications of Chief Financial Officer pursuant
                              to Section 302 of the Sarbanes-Oxley Act of 2002.

                (32.1)        Certification of Registrant by its Chief Executive
                              Officer and Chief Financial Officer pursuant to
                              Section 906 of the Sarbanes-Oxley Act of 2002.

                              *Denotes management contracts, compensatory plans
                              or arrangements.

                              **Incorporated by reference to Registrant's
                              Registration Statement on Form S-4 (No. 333-36326)
                              filed with the Commission on May 5, 2000.

                              ***Incorporated by reference to Registrant's
                              Registration Statement on Form S-4 (No.
                              333-119085) filed with the Commission on September
                              17, 2004.

                                       36
<PAGE>

                                   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.

                                AMERICAN RIVER BANKSHARES




November 6, 2006                By: /s/ DAVID T. TABER
----------------                    --------------------------------------------

                                    David T. Taber
                                    President
                                    Chief Executive Officer


                                AMERICAN RIVER BANKSHARES



November 6, 2006                By: /s/ MITCHELL A. DERENZO
----------------                    --------------------------------------------

                                    Mitchell A. Derenzo
                                    Chief Financial Officer
                                    (Principal Financial and Accounting Officer)

                                       37
<PAGE>

                                  EXHIBIT INDEX



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


     31.1           Certifications of Chief Executive Officer pursuant
                    to Section 302 of the Sarbanes-Oxley Act of 2002.        39

     31.2           Certifications of Chief Financial Officer pursuant
                    to Section 302 of the Sarbanes-Oxley Act of 2002.        40

     32.1           Certification of American River Bankshares by its
                    Chief Executive Officer and Chief Financial Officer
                    pursuant to Section 906 of the Sarbanes-Oxley Act
                    of 2002.                                                 41

                                       38