<PAGE>

                                                                      EXHIBIT 13


                       First Oak Brook Bancshares, Inc.

                          2000 Summary Annual Report
<PAGE>

First Oak Brook Bancshares, Inc., established in 1983 and public since 1985, is
a $1.25 billion asset bank holding company. Its subsidiary, Oak Brook Bank,
serves Chicagoland from 9 offices in DuPage County and 4 offices in Cook County.
The Company's 304 full time equivalent employees are committed to working
together to deliver value to our customers and to create value for our
shareholders.

<TABLE>
<CAPTION>
-------------------------------------------------------------------------------------------------------------
Financial Highlights                                                         First Oak Brook Bancshares, Inc.
-------------------------------------------------------------------------------------------------------------
                                                                       At and for the year ended December 31,

(Dollars in thousands except per share amounts)                                  2000                1999
<S>                                                                           <C>                 <C>
Net Income

Net income..........................................................          $    11,049         $    10,546

Per Share

Basic earnings per share............................................          $      1.72         $      1.60
Diluted earnings per share..........................................                 1.70                1.57
Book value at year-end..............................................                13.63               12.04
Market price at year-end............................................                17.63               18.50
Cash dividends paid.................................................                  .43                 .40

Balance Sheet Highlights

Total assets........................................................          $ 1,249,272         $ 1,146,356
Loans, net of unearned discount.....................................              825,020             719,969
Demand deposits.....................................................              221,552             196,243
Total deposits......................................................              978,226             894,072
Shareholders' equity................................................               87,606              79,999

Performance Ratios

Return on average assets............................................                  .90%                .99%
Return on average equity............................................                13.58%              13.30%

Asset Quality Ratios

Nonperforming loans to total loans..................................                  .05%                .05%
Nonperforming assets to total loans and other real estate owned.....                  .05                 .05
Nonperforming assets to total capital...............................                  .50                 .47
Allowance for loan losses to total loans............................                  .69                 .67
Net charge-offs to average loans....................................                  .01                 .07
Allowance for loan losses to nonperforming loans....................                12.94x              12.98x
</TABLE>

--------------------------------------------------------------------------------
Forward-Looking Statements

Except for historical matters, this summary annual report to shareholders
contains certain forward looking statements consisting of estimates with respect
to the financial condition, results of operations and business of the Company
that are subject to various factors which could cause actual results to differ
from these estimates. These factors include, but are not limited to, changes in:
general economic conditions, interest rates, legislative or regulatory changes,
loan demand, depositor preferences, the ability to attract and retain
experienced senior management and construction buildout or other delays relating
to branch expansion. Therefore, there can be no assurances that future actual
results will correspond to these forward-looking statements.
--------------------------------------------------------------------------------
<PAGE>

--------------------------------------------------------------------------------
Management Letter                               First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

     This Summary Annual Report includes just about everything you'll want to
     know about us. We've included financial, investor, and other highlights for
     the year 2000; a 10-year summary of financial data; our immediate plans for
     2001; and essentials about our strategies, markets, distribution systems,
     products and services, and competitive advantages. If you need more
     details, you'll find them in our SEC Form 10-K, which for shareholders is
     included in your package and which for others is on our web site at
     www.firstoakbrook.com.

     Reviewing the last 10 years, we have more than tripled our profits and
     almost tripled our resources and equity. During this period, we have
     increased core earnings and dividends every single year. We believe our
     strategy of producing consistent and predictable earnings growth while
     maintaining a low asset risk profile is the best way to enhance our
     attractive franchise.

     But past accomplishments are not enough. We are working especially hard
     right now to build a harmonious and energetic team to fulfill our
     commitment to deliver value to our customers and to create value for our
     shareholders.

     As we continue to equip ourselves to thrive in this new millennium, we
     thank you--our investors, customers and staff--for your continuing loyalty
     and confidence in our Company.



     /s/ Eugene P. Heytow    /s/ Frank M. Paris    /s/ Richard M. Rieser, Jr.,

     Eugene P. Heytow        Frank M. Paris        Richard M. Rieser, Jr.,
     Chairman                Vice-Chairman         President


                                                                 March 9, 2001

                                                                               1
<PAGE>

--------------------------------------------------------------------------------
2000 Financial Highlights                       First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

Statement of Income

 .    Net income and earnings per share. Core income rose each year over the last
     ten years. Profits were up $503,000 or 5% to $11.049 million in 2000 from
     $10.546 million in 1999. Diluted earnings per share climbed 8% to $1.70 in
     2000 from $1.57 in 1999. The 8% earnings per share jump as compared to the
     5% profit hike resulted from our stock buy-back program.

 .    Total revenues. Net interest income plus other income increased $2.4
     million or 6% to $43.7 million in 2000 from $41.3 million in 1999. This
     growth was attributable to a 3% increase in net interest income and a 17%
     increase in fee income, primarily from cash management and merchant credit
     card processing fees.

 .    Other expenses. Other expenses rose $1.5 million or 6% to $27.1 million in
     2000 from $25.6 million in 1999. New positions and salary increases, higher
     merchant credit card interchange expense and costs associated with new
     branches in LaGrange (opened 9/99), and Chicago (opened 11/00) contributed
     to higher operating expenses.

Balance Sheet

 .    Total assets. Assets climbed $102.9 million or 9% to $1.249 billion at
     December 31, 2000 from $1.146 billion at December 31, 1999.

 .    Loans. Loans grew $105.0 million or 15% to $825.0 million in 2000 from
     $720.0 million in 1999. This growth included $28.8 million (up 27%) in
     commercial loans, $46.9 million (up 26%) in commercial real estate,
     construction, land acquisition and development loans, and $17.5 million (up
     21%) in home equity loans.

 .    Deposits. Total deposits were up $84.1 million or 9% to $978.2 million in
     2000 from $894.1 million in 1999. Noninterest-bearing deposits rose 5% on
     average in 2000 from 1999.

 .    Shareholders' equity. Shareholders' equity increased $7.6 million or 10% to
     $87.6 million in 2000 from $80.0 million in 1999. This growth occurred
     after the payout of $2.8 million in cash dividends to shareholders, common
     stock repurchases of $3.9 million, and an increase of $2.7 million in
     market value of the Company's available-for-sale investment portfolio.

 .    Capital ratios. The Company and Oak Brook Bank's capital ratios continued
     to exceed regulatory criteria for "well-capitalized" holding companies and
     banks. The Company's and Oak Brook Bank's capital was enhanced by the
     issuance of Trust Preferred Securities as detailed on page 3. Because of
     our higher capital ratios we pay lower FDIC insurance premiums and are
     subject to expedited treatment when seeking approval of certain acquisition
     and expansion activities.

 .    Asset quality. Asset quality remained excellent. Nonperforming assets
     totaled just $439,000 or .04% of total assets at year-end 2000. Net loan
     charge-offs for 2000 totaled $46,000 or .01% of average loans outstanding.

2
<PAGE>

--------------------------------------------------------------------------------
2000 Shareholder Highlights                     First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

Our Stock

 .    Our common stock price decreased 4.7% to $17.63 at year end 2000 from
     $18.50 per share at year end 1999. The NASDAQ Bank Index increased 14.7%
     and the Standard & Poor's Bank Index increased 14.3%.

 .    While our stock price lagged the bank indexes in 2000, cumulatively over
     the last four years we performed as well as the indexes. If on December 31,
     1996 an investor had purchased $100 each of FOBB stock, the S&P Bank Index
     stocks, and the NASDAQ Bank Index stocks, the value of the FOBB stock at
     December 31, 2000 would have been $151.59 while the value of the S & P Bank
     Index stocks and the NASDAQ Bank Index stocks would have been $142.38 and
     $152.30 respectively (See "Stock Price Growth" chart below).

 .    Our stock has historically sold for lower price to earnings (P/E) and price
     to book (P/B) multiples than our peers. The chart below traces this
     relationship. The good news--in our opinion--is that our stock at year-end
     2000 appeared to be relatively undervalued.

 .    We continue to increase the number of market makers in our stock. They are
     listed on page 17.

--------------------------------------------------------------------------------
Stock Price Growth

                             [PLOT POINTS TO COME]
--------------------------------------------------------------------------------


--------------------------------------------------------------------------------
Price to Earnings (P/E) and Price to Book (P/B)

<TABLE>
<CAPTION>
                         1996    1997    1998    1999    2000
<S>                      <C>     <C>     <C>     <C>     <C>
Price-to-Earnings
FOBB P/E                 11.3    11.8    13.3    11.8    10.4
Peer P/E                 14.3    20.5    19.9    13.7    11.5

Price-to-Book
FOBB P/B                  1.3     2.3     1.6     1.5     1.3
Peer P/B                  1.6     2.4     2.2     1.8     1.5
</TABLE>

Peer information (nationwide banks with asset size of $1 to $2 billion) provided
by SNL DataSource

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

Trust Preferred Securities

 .    The Company has $6 million of Trust Preferred Capital Securities
     outstanding at December 31, 2000 that were part of a $300 million Pooled
     Trust Preferred Program co-agented by Keefe, Bruyette & Woods and First
     Tennessee Capital Markets. The securities bear an interest rate of 10.6%,
     mature on September 15, 2030 and are non-callable for 10 years and, after
     that period, have a declining 10 year premium call. We used part of the
     proceeds to pay down $2.1 million of short-term debt and held the remainder
     for general corporate purposes. The proceeds, which qualify as Tier 1
     Capital for regulatory purposes, will also provide capital to support the
     Company's and the Bank's future growth.

                                                                               3
<PAGE>

Dividends and Stock Buy-Backs

 .    Dividends. The Company has paid quarterly dividends since its incorporation
     in 1983. The annual dividend payout has increased each year over the last
     ten years--at an average rate of 17% (see Chart below). In 2000 the
     dividend payout ratio was 25% and the dividend yield was 2.4%, using the
     Common stock dividend of $.43 per share paid in 2000 and the year-end 2000
     closing stock price of $17.63.

--------------------------------------------------------------------------------
Dividends Per Share/(1)/

<TABLE>
          <S>            <C>
          1991           .107
          1992           .110
          1993           .118
          1994           .138
          1995           .158
          1996           .190
          1997           .270
          1998           .345
          1999           .400
          2000           .430
</TABLE>
--------------------------------------------------------------------------------

 .    Stock buy-backs. In 2000 we repurchased 253,500 shares of Common stock for
     a total cost of $3,872,000 and at an average price of $15.28 per share.
     These repurchases were made under Board approved stock repurchase programs.
     At year end there were 154,854 shares remaining available for purchase
     under the program. The Board believes that judicious stock buy backs, among
     other benefits, can provide shareholders with a desirable tax-efficient
     supplement to cash dividends since buy-backs increase remaining
     shareholders' percentage interests in the Company.

--------------------------------------------------------------------------------
Stock Data/(1)/

<TABLE>
<CAPTION>
                                                   Per Share
                  ---------------------------------------------------------------------------------------
                               Diluted
                                 Net      Dividends     Book         Low       High          Quarter
Quarter Ended                  Income       Paid       Value      Price/(2)/   Price/(2)/   End Price
<S>                            <C>        <C>         <C>         <C>         <C>           <C>
December 31, 2000.........     $  .48       $  .11    $  13.63    $  14.69    $  18.00       $  17.63
September 30, 2000........        .42          .11       12.93       13.50       15.56          15.56
June 30, 2000.............        .41          .11       12.44       13.63       17.00          13.63
March 31, 2000............        .39          .10       12.14       14.94       18.38          15.63
December 31, 1999.........        .41          .10       12.04       18.00       19.38          18.50
September 30, 1999........        .40          .10       12.04       18.69       21.00          18.75
June 30, 1999.............        .39          .10       11.70       16.50       21.00          20.13
March 31, 1999............        .37          .10       11.76       17.44       19.00          17.44
</TABLE>

/(1)/  On May 4, 1999, the shareholders approved the reclassification of the
       Common stock into the Class A common stock on a one for one basis. As a
       result, the Class A common stock is now the only class of outstanding
       common stock and has been renamed "Common" stock. Historical dividend and
       price information shown is that of the former Class A common stock.

/(2)/  The prices shown represent the high and low closing sales prices for the
       quarter.

4
<PAGE>

--------------------------------------------------------------------------------
2000 Other Highlights                           First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

As part of our business planning discipline, we set extremely rigorous goals for
the Company for the year 2000. Thanks to the enthusiastic and diligent efforts
of our staff, we're proud to be able to say we met or exceeded just about all of
them.

 .    Cash management. We continued to expand our elite sales team of commercial
     bankers. Their enthusiasm, energy, and formidable knowledge and
     expertise--in one of the most sophisticated specialties in all of
     banking--produced record results. They were aided by some noteworthy
     product innovations: Automated Wholesale Lockbox, which cuts the use of
     paper and gets our customers the information they need about collections
     faster via electronic data transmission, and an enhanced W.E.B.S. business
     banking system, which now allows commercial customers to inspect check
     images over the Internet as soon as their checks clear.

 .    Commercial Lending. We pushed our sales efforts to improve our yield on
     earning assets. As evidence of our commitment, we added four experienced
     loan officers--they have strong backgrounds not only in commercial real
     estate lending, but also in marketing and customer relationship management.
     We've also enrolled our team of commercial banking officers--until 2000
     their primary duty had been to sell cash management services--by adding
     sales goals for commercial loans to their responsibilities. As a result,
     our generation of new commercial loans has improved.

 .    Consumer lending. Our home equity division had a banner year, its portfolio
     growing 21%. Our marketing attracted many new accounts and invited existing
     borrowers to activate their credit lines, while higher mortgage rates
     reduced attrition from refinances.

     Our indirect auto division felt the effects of a margin squeeze, so we
     bumped rates intentionally to dampen demand. Our focus was, instead, on
     introducing a new related activity - financing Harley-Davidson motorcycles.
     This is a national initiative with a marketing officer assigned full-time
     to this rollout. Coming to the end of our first year, we are very pleased
     with the good yields and low delinquencies on Harley loans.

     Our merchant credit card activities continue their healthy growth. We now
     serve 298 Chicago area merchants, up from 262 the year before. Two
     representatives now sell this service full-time, pointing out not just the
     savings we offer but also the high service levels our local processing
     affords. Recently, Oak Brook Bank was ranked 69th nationwide among banks in
     merchant credit card processing.

 .    Investment management. In the previous year, we added a widely recognized
     equity investment manager to our staff. We also added an experienced
     investment manager exclusively specializing in fixed-income securities. As
     a result, in 2000, we saw our returns become stronger, displaying
     performance that in a difficult market matched standard market indices.

     An advertising and public relations campaign to publicize our augmented
     expertise included events aimed at introducing our existing customers to
     our investment management capabilities and a regional radio blitz centered
     on "Disciplined investing for serious money." Our reputation as a money
     manager continues to grow.

     We have developed a specialty--administering and managing money for
     municipal police and fire pension plans. In 2000 we added 6 discretionary
     and 2 custody relationships with over $56 million in assets. By year-end
     2000 in this specialty we managed 25 discretionary accounts with $148.7
     million in assets and 7 custody accounts with $26.6 million in assets.

                                                                               5
<PAGE>

 .    First branch in Chicago. In November, we opened our first Chicago Branch at
     Dearborn and Huron Streets in River North, a few blocks west of Michigan
     Avenue's Magnificent Mile. This branch allows us to offer our cash
     management, investment management, and commercial loan services to the
     businesses located in the city of Chicago, and it establishes a foothold in
     an area having a high population density and advantageous demographics. We
     staffed our new branch with some of our best commercial and retail bankers,
     including three dedicated, full-time commercial banking officers. We
     initiated an innovative advertising campaign in print and radio to support
     the new branch with the theme, "Custom-tailored banking," and augmented it,
     appropriately, with an attention-getting drawing for a custom-tailored
     suit.

 .    Training. We have completely revamped training throughout the bank.
     Training sessions are now shorter and more focused; content has been
     distilled to manageable essentials; clear and concise written summaries are
     provided for reference; practice drills are conducted to reinforce
     learning; and carefully designed tests ensure competence. As a result, more
     of our staff can now be trained in less time, our staff is becoming more
     accomplished in a wider variety of tasks, and we can accomplish training
     without disrupting service to our customers.

 .    Retail Banking. We've given our branch managers a new role, asking them to
     move out of their branches several days a week to call on small businesses.
     Our managers have become experts in three categories of bank
     products--small business accounts, merchant credit card processing, and
     employee bank-at-work programs. They now have individual sales goals for
     these products, and we've started rewarding their performance directly.

 .    New Business. In June 2000 the Bank formed Oak Real Estate Development
     Corporation as a wholly owned subsidiary of the Bank. This subsidiary will,
     within the State of Illinois, acquire, develop, rehabilitate and sell or
     rent single/multi family residential real estate, residential apartment
     buildings and commercial properties that are part of or ancillary to
     residential real estate.

     The subsidiary's first project, now underway, is a gut rehab of a 90 year
     old row house in a neighborhood just west of the United Center in Chicago,
     Illinois.

6
<PAGE>

--------------------------------------------------------------------------------
2001 Initiatives                                First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

Success for Oak Brook Bank, depends on a strong team of dedicated professionals
delivering excellence in several areas, including relationship management,
customizing products and fair pricing. This year we'll be stressing certain
areas in particular.

 .    Commercial lending. Having expanded the commercial lending department, we
     are developing two commercial lending teams--one with real estate expertise
     and one devoted to business lending. The focus of each team will be to
     develop a simpler, easier and speedier way to deliver loans to our
     customers without sacrificing any of our very demanding standards for high
     asset quality.

 .    Consumer lending. We are introducing a team approach to consumer lending,
     starting by having just named one senior officer to head our home equity,
     indirect lending, merchant credit card, and other consumer loan activities.

     In indirect lending we're focusing on selling dealers on the benefit of
     "one-stop shopping"--utilizing us for cash management, merchant credit card
     processing, and commercial loans, in addition to our indirect loan
     facilities. Our Harley-Davidson program continues to grow. We are now
     operating in five states and expect to add at least five more this year.

     The branches are expected to become active in our consumer loan growth. Our
     branch staff are learning how to originate consumer loans (previously they
     focused on gathering deposits), so they can assist the many customers they
     see in the branches on a daily basis. We have added specific consumer loan
     sales goals to their responsibilities and will reward their success with
     incentives.

 .    New products. We want our customers to be able to turn to us for
     convenient, trustworthy, and competitive financial services. To that end,
     in the second quarter of 2001, we'll be introducing insurance products
     available over the phone and on our web site. We've worked hard to find the
     right mix of products, the right way to deliver them, and the right
     insurance broker to partner with. Late in the year we expect to partner
     with a national securities brokerage firm to offer securities brokerage.

 .    Investment management. This Department is a model for the energetic,
     team-driven approach we are developing bank-wide. We are focused on
     building discretionary assets under management from two primary
     sources--municipal police and fire pension plans and private clients. We
     have two full-time business development officers, one assigned to each
     market. Our three other divisions--administration, operations, and
     securities research and portfolio management--operate with our business
     development officers to form a smooth-running, efficient team. The newest
     member of this team who markets private client services has already begun
     to forge strong sales partnerships with other retail and commercial
     officers.

 .    Branch expansion. As part of our primary strategy to make our services
     conveniently available to communities throughout Chicago's western suburbs,
     we'll be building a new branch in southwest suburban Bolingbrook, for a
     total of fourteen branches in all. Bolingbrook is a rapidly growing
     community presenting very attractive opportunities for us, especially on
     the commercial side.

 .    New marketing theme. Oak Brook Bank will be introducing a new positioning
     line, "Oak Brook Bank, for the love of money.(SM)" It marks the first time
     that the bank has had a single theme that could encompass both retail and
     commercial banking. We will continue to stress our extraordinary level of
     service, our most distinctive and attractive capability. This is
     exemplified by our ability to customize our products to suit each
     customer's needs.

                                                                               7
<PAGE>

--------------------------------------------------------------------------------
10 Year Earnings Summary and Selected Consolidated Financial Data
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
     (Dollars in thousands except per share data)                                          2000           1999          1998

--------------------------------------------------------------------------------------------------------------------------------
<S>                                                                                    <C>           <C>           <C>
Statement        Net interest income.................................................  $   33,205    $   32,337    $   28,410
of Income        Provision for loan losses...........................................         900           840           630
Data             Net interest income after provision for loan losses.................      32,305        31,497        27,780
                 Other income........................................................      10,482         8,966         7,991
                 Other expenses......................................................      27,117        25,640        22,423
                 Income before provision for income taxes............................      15,670        14,823        13,348
                 Provision for income taxes..........................................       4,621         4,277         3,907
                 Net income..........................................................  $   11,049    $   10,546    $    9,441

--------------------------------------------------------------------------------------------------------------------------------
Common           Basic earnings per share............................................  $     1.72    $     1.60    $     1.42
Stock Data/(2)/  Diluted earnings per share..........................................        1.70          1.57          1.39
                 Cash dividends paid per share/(3)/..................................         .43           .40          .345
                 Book value per share................................................       13.63         12.04         11.46
                 Closing price of common stock per share/(3)/
                    High.............................................................       18.38         21.00         25.50
                    Low..............................................................       13.50         16.50         17.75
                    Year-end.........................................................       17.63         18.50         18.50
                 Dividends per share to closing price................................         2.4%          2.2%          1.9%
                 Closing price to diluted earnings per share.........................        10.4x         11.8x         13.3x
                 Market capitalization...............................................  $  111,875    $  120,829    $  121,783
                 Period end shares outstanding.......................................   6,345,745     6,531,314     6,582,840
                 Volume of shares traded.............................................   2,512,886     1,656,449     1,908,594

--------------------------------------------------------------------------------------------------------------------------------
Year End         Total assets........................................................  $1,249,272    $1,146,356    $1,009,275
Balance          Loans, net of unearned discount.....................................     825,020       719,969       631,987
Sheet            Allowance for loan losses...........................................       5,682         4,828         4,445
Data             Investment securities...............................................     319,985       348,607       297,674
                 Demand deposits.....................................................     221,552       196,243       187,209
                 Total deposits......................................................     978,226       894,072       777,802
                 Federal Home Loan Bank borrowings...................................      81,000        63,000        57,500
                 Trust Preferred Capital Securities..................................       6,000            --            --
                 Shareholders' equity................................................      87,606        79,999        77,061

--------------------------------------------------------------------------------------------------------------------------------
Financial        Return on average assets............................................         .90%          .99%         1.02%
Ratios           Return on average equity............................................       13.58         13.30         12.74
                 Net interest margin.................................................        2.99          3.35          3.43
                 Net interest spread.................................................        1.95          2.35          2.34
                 Dividend payout ratio...............................................       25.45         24.62         24.17

--------------------------------------------------------------------------------------------------------------------------------
Capital          Average equity to average total assets..............................        6.63%         7.41%         8.00%
Ratios           Tier 1 capital ratio................................................        9.75         10.05         10.20
                 Total capital ratio.................................................       10.35         10.65         10.80
                 Capital leverage ratio..............................................        7.47          7.12          7.61

--------------------------------------------------------------------------------------------------------------------------------
Asset            Nonperforming loans to total loans..................................         .05%          .05%          .04%
Quality          Nonperforming assets to total loans and other real estate owned.....         .05           .05           .04
Ratios           Nonperforming assets to total capital...............................         .50           .47           .35
                 Allowance for loan losses to total loans............................         .69           .67           .70
                 Net charge-offs to average loans....................................         .01           .07           .10
                 Allowance for loan losses to nonperforming loans....................       12.94x        12.98x        16.34x
</TABLE>

/(1)/  Included in other income in 1997 was the $9,251,000 gain on the sale of
       our credit card portfolio.

/(2)/  Common Stock data has been restated to give effect to the following stock
       dividends: 100% effective September 3, 1998, 50% effective September 8,
       1994, 25% effective December 23, 1993, and 50% effective November 23,
       1992.

8
<PAGE>

--------------------------------------------------------------------------------
                                                First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
   At and for the year ended December 31,
    1997              1996             1995            1994            1993            1992           1991

--------------------------------------------------------------------------------------------------------------
<S>               <C>             <C>             <C>             <C>             <C>             <C>
$   27,432        $   26,834      $   25,476      $   24,296      $   21,315      $   18,156      $   17,291
     1,550             1,510           1,050           1,200             960             870             550
    25,882            25,324          24,426          23,096          20,355          17,286          16,741
    15,541/(1)/        4,647           4,186           4,098           5,112           4,977           3,123
    20,708            20,435          19,924          19,173          18,379          16,806          15,701
    20,715             9,536           8,688           8,021           7,088           5,457           4,163
     6,962             2,429           1,996           1,827           1,555           1,144             738
$   13,753        $    7,107      $    6,692      $    6,194      $    5,533      $    4,313      $    3,425

--------------------------------------------------------------------------------------------------------------
$     2.09        $     1.06      $     1.00      $      .92      $      .83      $      .64      $      .52
      2.03              1.03             .98             .91             .81             .64             .51
      .270              .190            .158            .138            .118            .110            .107
     10.38              8.62            8.23            6.27            6.63            5.58            5.03

     25.19             12.75           10.75           10.25            7.74            5.87            5.25
     11.38             10.25            8.25            7.25            5.07            4.31            2.58
     24.00             11.63           10.32            8.63            7.17            5.20            4.67
       1.1%              1.6%            1.5%            1.6%            1.6%            2.1%            2.3%
      11.8x             11.3x           10.5x            9.5x            8.9x            8.1x            9.2x
$  160,477        $   78,458      $   69,409      $   58,037      $   48,213      $   34,967      $   31,080
 6,686,560         6,746,186       6,725,684       6,725,084       6,724,226       6,724,515       6,655,211
 3,447,438         1,133,042       2,011,048       2,134,482       1,511,475       1,413,934       2,036,649

--------------------------------------------------------------------------------------------------------------
$  816,144        $  768,655      $  678,102      $  634,705      $  613,574      $  514,913      $  460,183
   447,332           420,164         362,728         309,681         278,177         265,538         202,928
     4,329             4,109           3,932           3,859           3,231           2,890           2,514
   302,098           265,954         256,192         263,943         223,988         180,108         170,048
   153,806           147,497         128,236         109,237         113,780          94,222          82,724
   627,763           648,303         555,086         513,623         508,173         436,599         401,990
    42,500                --           3,500           6,000           6,000              --              --
        --                --              --              --              --              --              --
    71,661            59,553          53,762          42,909          44,118          37,764          34,223

--------------------------------------------------------------------------------------------------------------
      1.76%              .97%           1.03%           1.01%            .95%            .84%            .74%
     21.72             12.77           14.00           14.54           13.85           12.00           10.46
      3.97              4.20            4.54            4.61            4.44            4.33            4.50
      2.86              3.23            3.57            3.87            3.75            3.47            3.25
     12.43             18.63           14.63           14.13           16.75           15.63           19.33

--------------------------------------------------------------------------------------------------------------
      8.11%             7.59%           7.39%           6.95%           6.89%           6.98%           7.03%
     13.70             12.66           13.33           13.37           11.88           12.30           13.05
     14.55             13.54           14.32           14.46           12.83           13.24           14.03
      8.57              7.69            7.94            7.50            6.56            7.27            7.24

--------------------------------------------------------------------------------------------------------------
       .09%              .49%            .03%            .21%            .11%            .17%            .26%
       .09               .49             .03             .21             .46             .54             .26
       .53              3.49             .19            1.49            2.92            3.80            1.57
       .97               .98            1.08            1.25            1.16            1.09            1.24
       .32               .34             .30             .20             .23             .22             .22
     11.45x             1.98x          37.81x           6.05x          10.99x           6.54x           4.68x
</TABLE>


/(3)/  On May 4, 1999, the shareholders approved the reclassification of the
       Common stock into Class A common stock on a one for one basis. As a
       result, the Class A common stock is now the only class of outstanding
       common stock and has been renamed "Common" stock. Historical dividend and
       price information shown is that of the former Class A common stock.

                                                                               9
<PAGE>

--------------------------------------------------------------------------------
Consolidated Balance Sheets                     First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
                                                                                                   December 31,
(Dollars in thousands)                                                                         2000           1999
<S>                                                                                        <C>            <C>
Assets
Cash and due from banks........................................................            $    55,291    $    47,080
Federal funds sold and securities purchased under agreements
  to resell....................................................................                 15,640             --
Interest-bearing deposits with banks...........................................                    119            488
Investment securities:
  Securities held-to-maturity, at amortized cost (fair value of $99,617
     and $93,202 in 2000 and 1999, respectively)...............................                 98,131         94,425
  Securities available-for-sale, at fair value.................................                221,854        254,182
                                                                                    ---------------------------------
Total investment securities....................................................                319,985        348,607
Loans, net of unearned discount................................................                825,020        719,969
Less-allowance for loan losses.................................................                 (5,682)        (4,828)
                                                                                    ---------------------------------
  Net loans....................................................................                819,338        715,141
Premises and equipment, net....................................................                 23,117         21,809
Other assets...................................................................                 15,782         13,231
                                                                                    ---------------------------------
Total Assets...................................................................            $ 1,249,272    $ 1,146,356
                                                                                    =================================

Liabilities and Shareholders' Equity
Noninterest-bearing demand deposits............................................            $   221,552    $   196,243
Interest-bearing deposits:
  Savings deposits and NOW accounts............................................                130,602        171,135
  Money market accounts........................................................                111,761         57,186
  Time deposits:
     Under $100,000............................................................                279,139        236,108
     $100,000 and over.........................................................                235,172        233,400
                                                                                    ---------------------------------
Total interest-bearing deposits................................................                756,674        697,829
                                                                                    ---------------------------------
Total deposits.................................................................                978,226        894,072
Federal funds purchased and securities sold under agreements to repurchase.....                 71,967         78,008
Treasury, tax and loan demand notes............................................                 11,740         20,000
Federal Home Loan Bank borrowings..............................................                 81,000         63,000
Trust Preferred Capital Securities.............................................                  6,000             --
Other liabilities..............................................................                 12,733         11,277
                                                                                    ---------------------------------
Total Liabilities..............................................................            $ 1,161,666    $ 1,066,357
                                                                                    =================================

Shareholders' Equity:
  Preferred stock, series B, no par value, authorized--100,000 shares,
        issued--none...........................................................                     --             --
  Common stock, $2 par value, authorized--16,000,000 shares in
        2000 and 1999, issued--7,283,256 shares in 2000 and 1999,
        outstanding--6,345,745 shares in 2000 and 6,531,314 shares
        in 1999................................................................                 14,567         14,567
  Surplus......................................................................                 11,849         11,985
  Accumulated other comprehensive income (loss), net of tax....................                  1,410         (1,245)
  Retained earnings............................................................                 70,593         62,356
  Less cost of shares in treasury, 937,511 and 751,942 common
        shares in 2000 and 1999, respectively..................................                (10,813)        (7,664)
                                                                                    ---------------------------------
Total Shareholders' Equity.....................................................                 87,606         79,999
                                                                                    ---------------------------------
Total Liabilities and Shareholders' Equity.....................................            $ 1,249,272    $ 1,146,356
                                                                                    =================================
</TABLE>

10
<PAGE>

--------------------------------------------------------------------------------
Consolidated Statements of Income               First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

<TABLE>
<CAPTION>
(Dollars in thousands except per share amounts)                                           Years Ended December 31,
                                                                                         2000        1999        1998
<S>                                                                                    <C>         <C>         <C>
Interest income:
   Interest and fees on loans.................................................         $60,450     $50,078     $40,811
   Interest on securities:
       U.S. Treasury and Government agencies..................................          18,031      14,208      14,127
       Obligations of states and political subdivisions.......................           2,979       2,825       2,574
       Other securities.......................................................             888         830       1,314
   Interest on Federal funds sold and securities purchased
       under agreements to resell.............................................           1,821       1,118       2,106
   Interest on deposits with banks............................................              14         401         764
                                                                                  ------------------------------------
Total interest income.........................................................          84,183      69,460      61,696
Interest expense:
   Interest on savings deposits and NOW accounts..............................           4,201       4,765       5,711
   Interest on money market accounts..........................................           4,400       1,648       1,302
   Interest on time deposits..................................................          31,465      23,428      20,016
   Interest on Federal funds purchased and securities
       sold under agreements to repurchase....................................           5,405       3,042       2,491
   Interest on Treasury, tax and loan demand notes............................           1,019         370         523
   Interest on Federal Home Loan Bank borrowings..............................           4,286       3,870       3,243
   Interest on Trust Preferred Capital Securities.............................             202          --          --
                                                                                  ------------------------------------
Total interest expense........................................................          50,978      37,123      33,286
                                                                                  ------------------------------------
Net interest income...........................................................          33,205      32,337      28,410
Provision for loan losses.....................................................             900         840         630
                                                                                  ------------------------------------
Net interest income after provision for loan losses...........................          32,305      31,497      27,780
                                                                                  ------------------------------------
Other income:
   Service charges on deposit accounts........................................           4,671       3,600       3,190
   Investment management and trust fees.......................................           1,144       1,128       1,048
   Merchant credit card processing fees.......................................           2,552       1,858       1,329
   Fees on mortgages sold, net................................................             177         422         416
   Income from revenue sharing agreement......................................             900         900         900
   Other operating income.....................................................           1,020         979       1,029
   Investment securities gains, net of losses.................................              18          79          79
                                                                                  ------------------------------------
Total other income............................................................          10,482       8,966       7,991
                                                                                  ------------------------------------
Other expenses:
   Salaries and employee benefits.............................................          16,171      15,817      13,680
   Occupancy expense..........................................................           1,797       1,683       1,566
   Equipment expense..........................................................           2,011       1,824       1,906
   Data processing............................................................           1,028         968         776
   Postage, stationery and supplies...........................................             869         865         834
   Advertising and business development.......................................           1,356       1,231       1,090
   Merchant credit card interchange expense...................................           1,942       1,419         994
   Other operating expenses...................................................           1,943       1,833       1,577
                                                                                  ------------------------------------
Total other expenses..........................................................          27,117      25,640      22,423
                                                                                  ------------------------------------
Income before income taxes....................................................          15,670      14,823      13,348
Income tax expense............................................................           4,621       4,277       3,907
                                                                                  ------------------------------------
Net income....................................................................         $11,049     $10,546     $ 9,441
                                                                                  ====================================

Basic earnings per share......................................................         $  1.72     $  1.60     $  1.42
                                                                                  ====================================
Diluted earnings per share....................................................         $  1.70     $  1.57     $  1.39
                                                                                  ====================================
</TABLE>

                                                                              11
<PAGE>

--------------------------------------------------------------------------------
The Essentials of our Company                   First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

Our Mission

Building an energetic, harmonious and winning team to deliver value to our
customers and create value for our shareholders.

Our Strategies

We aim to:

 .    Build a leading business bank in Chicagoland, starting from our strong base
     in the western suburbs;

 .    Blend the sophisticated products and delivery systems of a money-center
     bank with the loving service of a community bank;

 .    Tailor-make our products and services to fit the needs of our customers;

 .    Teach every employee, to whatever degree possible, to be knowledgeable,
     trustworthy and effective sales representatives and, at all times, to treat
     each other and our customers warmly and with dignity and respect;

 .    Earn a predictable, consistent and growing profit while preserving our high
     asset quality.

Markets & Marketing

Products. We sell our main business banking products mostly through sales calls
made by 21 full-time business development officers. Our top revenue producers
include cash management services, commercial real estate and business loans,
automobile dealer business, and investment management and trust services. The
tables below show how these areas have been faring.

<TABLE>
<CAPTION>
----------------------------------------------------------------------------------------
Commercial Banking and Cash Management

($ in millions)                                  1997        1998        1999      2000
<S>                                           <C>        <C>        <C>        <C>
Fee Income:
  Account Analysis                            $     1.7  $     2.2  $     2.6  $     3.5
  Merchant Processing                               1.0        1.3        1.9        2.6
  Sweep Accounts                                     .1         .2         .2         .2

Commercial Checking
  Deposits at year end                              120        154        159        184
----------------------------------------------------------------------------------------

<CAPTION>
----------------------------------------------------------------------------------------
Business and Commercial Real Estate Lending

($ in millions)                                  1997        1998        1999      2000
<S>                                           <C>        <C>        <C>        <C>
Commercial Real Estate:
  Revenue                                     $     9.4  $    11.0  $    13.8  $    17.1
  Loans Outstanding at year end                     110        156        181        227

Business Loans:
  Revenue                                           3.8        5.9        8.0       10.0
  Loans Outstanding at year end                      55        109        108        136
----------------------------------------------------------------------------------------

<CAPTION>
----------------------------------------------------------------------------------------
Auto and Motorcycle Dealer Business

($ in millions)                                  1997        1998       1999      2000
<S>                                           <C>        <C>        <C>        <C>
Loan Revenues                                 $     6.4  $    11.4  $    16.3  $    18.9
Loans Outstanding at year end:
  Indirect Loans                                    106        165        215        219
  Floor Plan Loans                                    7         23         18         13
  Commercial Mortgages                                6         16         28         29

Checking Deposits at year end                         8         10         11         12
----------------------------------------------------------------------------------------

<CAPTION>
----------------------------------------------------------------------------------------
Investment Management and Trust Services

($ in millions)                                  1997        1998       1999       2000
<S>                                           <C>        <C>        <C>        <C>
Department Income                             $    .908  $   1.048  $   1.128  $   1.144

Discretionary Assets
  Under Management at year end                      134        195        245        271
----------------------------------------------------------------------------------------
</TABLE>

12
<PAGE>

We sell our main consumer products mostly through regional radio, newspaper, and
direct mail. We also support them on our Web site. We bolster this with a staff
of consumer and mortgage loan originators, a Call Center open seven-days-a-week,
and retail bankers in our 13 offices.

Customization. Over the years, we've developed an enviable reputation for
outstanding processing and superior service. Now we are focusing on sales. We
have concentrated on hand tailoring products and services like cash management,
lending, and investment management, especially for business clients. It
distinguishes us from competitors and keeps us from turning our products and
services into commodities.

Distribution. Our products are available at our 13 traditional banking offices,
where they're supported by a cadre of marketing officers. In addition, consumer
deposits are also available through our proprietary network of 18 ATMs and the
402 ATMs we share with other members of the regional Agree(SM) alliance (none of
which impose surcharges on customers). They're also available through the
regional Cash Station(R)/MAC(R)/Star(SM) networks and the worldwide CIRRUS(R)
system. Moreover, our phone-banking system provides account information 24 hours
a day, seven days a week.

We offer retail and business banking on the Internet. Our home page offers
general information, product information, useful consumer data, investor
relations information, and links to retail and business Internet applications.
At our Internet retail branch, www.obb.com, visitors can arrange for On-Line
home banking with an option for bill payment, open deposit accounts, and obtain
consumer loans. Our Web Electronic Banking System, "W.E.B.S.," introduced in
1998, was the first Internet business banking system in the Midwest. Commercial
customers can look up balances and statements; find out whether checks have
cleared and, for those that have cleared, view their actual check images;
transfer funds between accounts; initiate wires; and issue stop payment
orders--all securely over the Internet.

Branch Offices. Eleven of our thirteen banking offices are located in Chicago's
western suburbs. The other offices are in Glenview, on Chicago's affluent North
Shore, and in the River North area of Chicago, just 3 blocks west of Michigan
Avenue's famous "Magnificent Mile". The total population living within three
miles of each office totals 1.3 million and enjoys an average household income
(AHI) of $98,000 which is significantly higher than the AHI for the Chicago area
or the United States. Our superior demographics by branch and branch locations
are shown to the right.

---------------------------------------------------------------------------
Branch Demographics*--3 Mile Radius/(1)/

Location                  Branch       Population      Average
(year acquired           Deposits                     Household
or opened)           ($ in thousands)                   Income

Addison (acq. '74)       $ 71,448         87,042       $ 77,865
Aurora ('98)               32,360         36,817         69,898
Bensenville ('86)          19,089         57,025         76,206
Broadview (Acq. '89)       52,094        161,239         67,224
Burr Ridge ('88)           55,669         51,160        115,539
Chicago ('00)               2,548        306,095         91,032
Glen Ellyn ('98)           24,567        117,537         86,586
Glenview ('90)             68,643         71,608        166,282
LaGrange ('99)             28,980        101,363         93,177
Lisle ('85)                28,489        107,103        107,685
Naperville ('88)           37,922         73,920        110,538
Oak Brook (acq. '76)      522,683         80,202        110,166
Warrenville (acq. '83)     33,734         45,727        100,068

* as of 12/31/00
/(1)/  Source: Claritas, Inc.: 2000 population and average household income

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

                                                                              13
<PAGE>

Our brick and mortar branch concentration in the western suburbs provides local
businesses and consumers with a convenient and efficient source of high touch
banking. It also contributes to the awareness of the Oak Brook Bank identity in
its prime market, representing a base of strength readily exportable to the rest
of Chicagoland.

Notwithstanding the growing importance of plastic and electronic funds, our
customers still perceive their money as a "tangible" requiring protection in
secure premises and, consequently, have reacted favorably to our expanding
physical presence.

Branch Locations

                                     [MAP]

Competition

Although there's plenty of strong competition in financial services in the
six-county Chicago metropolitan area, there are only eight banking companies
having deposits over $3 billion. Next in line, forming a middle tier, are about
twenty more, with deposits from $3 billion down to around $600 million. We're in
this middle tier, with about $978 million in deposits.

In fact, in DuPage County, the center of our western suburban market, we rank
sixth in deposits among commercial banks, trailing only Bank One, Harris,
LaSalle, West Suburban, and Old Kent. We believe our increasing prominence is
giving us more opportunities for new business in Chicagoland.

14
<PAGE>

Growth

We operate in a growth mode in a large and expanding market. Even though
acquiring such growth requires significant investments in people and
infrastructure, core earnings year over year have been on the rise. Our growth
is based largely on volume gains, more so than spread gains. The Chicago market
is, in this sense, highly price competitive, but is large enough to present
significant opportunities to grow volume and market share. By acting on those
opportunities, our assets have risen to $1.25 billion in 2000.

Growth

($ in millions)   1997     1998     1999     2000

Assets          $  816   $1,009   $1,146   $1,249

Loans              447      632      720      825

Deposits           628      778      894      978

Core Earnings     8.67     9.44    10.55    11.05

High Asset Quality

We have a record of high asset quality with very few nonperforming loans, in
accordance with one of our fundamental goals--to earn a consistent, predictable
and growing profit while preserving our high asset quality. Steady and
predictable earnings make our Company easy to understand, and present an
advantageous, long-term risk to reward ratio.

At the year's end, the ratio of nonperforming assets to total loans and other
real estate owned was .05%. Compare that to .84% for a nationwide peer group of
banks with assets of $1-2 billion. Averaged over three years, we had .05% vs.
our peers' .77%.

Net charge-offs for 2000 were .01% of average loans compared to peers' .27%. Net
charge-offs based on a three-year average are .06% compared to peers' .25%.
These outstanding results have been achieved during a period of vigorous loan
growth--from $447 million at the end of 1997 to $825 million at year-end 2000.

                                                                              15
<PAGE>

--------------------------------------------------------------------------------
Directors and Officers*                         First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

Corporate Executive Officer Directors**

Eugene P. Heytow, Chairman of the Board and
Chief Executive Officer

Richard M. Rieser, Jr., President

Frank M. Paris, Vice Chairman

Corporate Non-Officer Directors**

John W. Ballantine, Private Investor (formerly
Executive Vice President and Chief Risk Management
Officer, First Chicago NBD Corporation)

Miriam Lutwak Fitzgerald, M.D.

Stuart I. Greenbaum, Dean of Olin School of
Business, Washington University

Michael L. Stein, Executive Vice President and
Director, Brownson, Rehmus, & Foxworth, Inc.
(Financial counseling)

Geoffrey R. Stone, Provost of the University of
Chicago

Robert M. Wrobel, President and CEO,
Amalgamated Bank of Chicago

Senior Corporate Officers

Rosemarie Bouman, Vice President and Chief
Financial Officer

George C. Clam, Vice President and Chief Banking
Officer

William E. Navolio, Vice President, General Counsel,
and Secretary

Oak Brook Bank Directors

Anthony DeSantis, Managing Partner,
Drury Lane Theater & Complex

Gary M. Fazzio, Senior Vice President,
CB Richard Ellis, Inc. (Real estate brokerage services)

Charles J. Gries (Advisory Director), Partner, Charles
J. Gries & Company LLP (Certified Public
Accountants)

Thomas J. Hartigan, Vice President, Hartway
Management, Inc. (Management and operation of
multiple car dealerships)

Andrew Heytow, President, Advantage Cutting &
Gasket, Inc.

Bruce Wechsler, President, Wexenthaller Realty
Management, Inc.

*   As of December 31, 2000
**  These directors are also directors of Oak Brook Bank

--------------------------------------------------------------------------------
Independent Auditors' Report
--------------------------------------------------------------------------------

The Board of Directors of First Oak Brook Bancshares, Inc.:

We have audited, in accordance with auditing standards generally accepted in the
United States of America, the consolidated balance sheets of First Oak Brook
Bancshares, Inc. and subsidiaries as of December 31, 2000 and 1999, and the
related consolidated statements of income, changes in shareholders' equity, and
cash flows for each of the years in the three year period ended December 31,
2000 (not presented herein); and in our report dated January 19, 2001, we
expressed an unqualified opinion on those consolidated financial statements.

In our opinion, the information set forth in the accompanying condensed
consolidated financial statements is fairly stated, in all material respects, in
relation to the consolidated financial statements from which it has been
derived.

/s/ KPMG LLP

Chicago, Illinois
January 19, 2001

16
<PAGE>

--------------------------------------------------------------------------------
Shareholder Information                         First Oak Brook Bancshares, Inc.
--------------------------------------------------------------------------------

Stock Listing

The Company's Common Stock trades on The Nasdaq Stock Market(R) under the symbol
FOBB. As of January 31, 2001, there were 315 holders of record and approximately
1,700 beneficial shareholders.

Corporate Office

1400 Sixteenth Street
Oak Brook, Illinois 60523
(630) 571-1050
www.firstoakbrook.com
email--rbouman@obb.com

Annual Meeting of Shareholders

The Annual Meeting of Shareholders will be held at 10 a.m. on Tuesday, May 8,
2001, in the Conference Center in our Corporate Office at 1400 Sixteenth Street,
Oak Brook, Illinois 60523.

Financial Information

The Company's 2000 Form 10-K Annual Report and quarterly financial releases, as
well as other Company information, can be accessed through our website on the
Internet at www.firstoakbrook.com.

Any individual requesting a printed copy of the Company's 2000 Form 10-K Annual
Report filed with the Securities and Exchange Commission may obtain it without
charge by writing to Rosemarie Bouman, Vice President and Chief Financial
Officer, at the Corporate Office.

Products and Services

To receive information on our products and services, call us at 1-800-536-3000
or visit our Internet site at www.obb.com.

Transfer Agent and Registrar

For answers to questions about stock transfers, changes of address, dividend
payments, or lost certificates, call our transfer agent, Oak Brook Bank, at
(630) 571-1050 x255.

Market Makers

The following firms make a market in the Company's Common Stock. Those marked
with an asterisk* also provide research coverage.

Bridge Trading Company................. 314-567-8300

Dain Rauscher Wessels.................. 800-862-8029

First Union Capital Markets............ 312-574-6000

Howe Barnes Investments, Inc.*......... 312-655-3000

Keefe, Bruyette & Woods, Inc.*......... 212-323-8300

Sandler, O'Neill & Partners, L.P.*..... 312-795-1500

Spear, Leads & Kellogg................. 212-422-2405

Stifel, Nicolaus & Co., Inc.*.......... 314-342-2000

Trident Securities, Inc................ 404-249-6644

William Blair & Co..................... 312-236-1600

                                                                              17
<PAGE>

                        First Oak Brook Bancshares, Inc.
                   1400 Sixteenth Street, Oak Brook, IL 60523
                             www.firstoakbrook.com