AMCORE FINANCIAL INC
10-K, 1998-03-26
NATIONAL COMMERCIAL BANKS
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<PAGE>   1
 
================================================================================
 
                UNITED STATES SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
 
                                   FORM 10-K
 
                 ANNUAL REPORT PURSUANT TO SECTION 13 OR 15(D)
                     OF THE SECURITIES EXCHANGE ACT OF 1934
 
                  FOR THE FISCAL YEAR ENDED DECEMBER 31, 1997
 
                        COMMISSION FILE NUMBER 0--13393
 
                             AMCORE FINANCIAL, INC.
 
<TABLE>
<S>                                   <C>                                              <C>
               NEVADA                                                                               36-3183870
   (State or other jurisdiction of                                                               (I.R.S. Employer
   incorporation or organization)                                                               Identification No.)
 
                                        501 Seventh Street, Rockford, Illinois 61104
                                              Telephone Number (815) 968-2241
</TABLE>
 
          Securities Registered Pursuant to Section 12(g) of the Act:
                          Common Stock, $.22 par value
                          Common Stock Purchase Rights
 
     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.  X   Yes      __   No
 
     Indicate by check mark if disclosure of delinquent filers pursuant to Item
405 of Regulation S-K is not contained herein, and will not be contained, to the
best of registrant's knowledge, in definitive proxy or information statements
incorporated by reference in Part III of this Form 10-K or any amendment to this
Form 10-K.
- ----
 
As of March 16, 1998, 27,130,467 shares of common stock were outstanding and the
aggregate market value of the shares based upon the average of the bid and asked
price held by non-affiliates was approximately $705,392,000.
 
                      DOCUMENTS INCORPORATED BY REFERENCE:
 
Portions of the 1998 Notice of Annual Meeting and Proxy Statement are
incorporated by reference into Part III of the Form 10-K.
 
================================================================================
<PAGE>   2
 
                             AMCORE FINANCIAL, INC.
 
                          FORM 10-K TABLE OF CONTENTS
 
<TABLE>
<CAPTION>
                                                                         PAGE
                                                                        NUMBER
                                                                        ------
<S>       <C>                                                           <C>
PART I
Item 1    Business....................................................     3
Item 2    Properties..................................................     8
Item 3    Legal Proceedings...........................................     8
Item 4    Submission of Matters to a Vote of Security Holders.........     8
PART II
Item 5    Market for the Registrant's Common Stock and Related
          Stockholder Matters.........................................     9
Item 6    Selected Financial Data.....................................     9
Item 7    Management's Discussion and Analysis of the Results of
          Operations and Financial Condition..........................    10
Item 8    Financial Statements and Supplementary Data.................    27
Item 9    Changes In and Disagreements with Accountants on Accounting
          and Financial Disclosure....................................    58
PART III
Item 10   Directors and Executive Officers of the Registrant..........    58
Item 11   Executive Compensation......................................    58
Item 12   Security Ownership of Certain Beneficial Owners and
          Management..................................................    58
Item 13   Certain Relationships and Related Transactions..............    58
PART IV
Item 14   Exhibits, Financial Statement Schedules and Reports on Form
          8-K.........................................................    59
SIGNATURES............................................................    61
</TABLE>
 
                                        2
<PAGE>   3
 
                                     PART I
 
                                ITEM 1. BUSINESS
 
GENERAL
 
     AMCORE Financial, Inc. (AMCORE) is a registered multi-bank holding company
incorporated under the laws of the State of Nevada in 1982. The corporate
headquarters are located at 501 Seventh Street in Rockford, Illinois. AMCORE
owns directly or indirectly all of the outstanding common stock of each of its
ten subsidiary banks, two subsidiary bank holding companies and seven financial
service subsidiaries. AMCORE provides the subsidiaries with advice and counsel
on policies and operating matters among other things.
 
BANK SUBSIDIARIES
 
     AMCORE directly owns two second tier bank holding companies. First National
Bancorp, Inc. (FNB) is a one-bank holding company and owns AMCORE Bank N.A.,
South Central. Country Bank Shares Corporation (Country) is a four-bank holding
company and owns AMCORE Bank Mt. Horeb, AMCORE Bank Clinton, AMCORE Bank
Montello, and AMCORE Bank Argyle, all state-chartered banks. AMCORE also
directly owns AMCORE Bank N.A., Rockford (ROCKFORD), AMCORE Bank N.A., Rock
River Valley, AMCORE Bank N.A., North Central (NORTH CENTRAL), AMCORE Bank N.A.,
Northwest (NORTHWEST), and AMCORE Investment Group, N.A. (AIG), all nationally
chartered banks, and AMCORE Bank Aledo, a state chartered bank. The Illinois
affiliate banks conduct business at 41 locations throughout northern Illinois,
excluding Cook county and the far northwestern counties. The primary service
region includes the Illinois cities of Rockford, Elgin, Woodstock,
Carpentersville, Crystal Lake, Sterling, Dixon, Princeton, Aledo, Rochelle,
Ashton, South Beloit, Gridley, Mt. Morris, Mendota, Peru and the surrounding
communities. The Wisconsin affiliate banks conduct business at 22 locations
throughout south-central Wisconsin. The primary service region includes the
Wisconsin cities of Madison, Monroe, Clinton, Argyle, Mt. Horeb, Montello and
the surrounding communities.
 
     Through its bank affiliates, AMCORE provides various personal banking,
commercial banking and related financial services. AMCORE also conducts banking
business through nine supermarket branches, which gives the customer convenient
access to bank services seven days a week.
 
     Personal Banking--Personal banking services to individuals include demand,
savings and time deposit accounts. Loan services including installment loans,
mortgage loans, overdraft protection, personal credit lines and credit card
programs. AMCORE Vintage Funds, a proprietary family of mutual funds, are also
marketed through each affiliate location. The Pinnacle private banking division
also markets Vintage Funds and meets other special needs of high net worth
individuals. Automated teller machines located throughout AMCORE's market area
make banking transactions available to customers when the bank facilities and
hours are not convenient.
 
     Commercial Banking--A wide range of financial services are provided to
commercial and governmental organizations. These services include, among others,
lending, deposits, letters of credit and cash management services.
 
     Other Financial Services--The bank affiliates provide various services to
consumers, commercial customers and correspondent banks. Services available
include safe deposit box rental, securities safekeeping, foreign currency
exchange, lock box and other services.
 
     AMCORE also offers three electronic banking services to commercial and
retail customers. AMCORE Data Bank facilitates access to commercial customers'
accounts via personal computers. It also permits the transfer of funds between
accounts and the initiation of wire transfers and ACH activity to accounts at
other financial institutions. AMCORE Direct is a point-of-sale system for credit
card and debit transactions. The AMCORE TeleBank service gives retail customers
the opportunity to use their telephone 24 hours a day to get balance and other
information on their checking and savings accounts, certificates of deposit, or
mortgage loan, all from a completely automated system.
                                        3
<PAGE>   4
 
     In 1996, AMCORE realigned three financial service subsidiaries under a
non-depository bank charter. The former AMCORE Trust Company was converted from
a trust company charter to a nationally chartered non-depository bank called
AMCORE Investment Group, N.A. AMCORE Capital Management, Inc. and AMCORE
Investment Services, Inc. were sold by ROCKFORD, and became subsidiaries of AIG
on the same date. These companies provide trust, capital management, brokerage
services, and act as the investment advisor of the Vintage mutual funds.
 
FINANCIAL SERVICE SUBSIDIARIES
 
     AMCORE Mortgage, Inc. (AMI), a wholly-owned subsidiary, was incorporated
under the laws of the State of Nevada in 1987. Through AMI, AMCORE provides each
bank affiliate with a variety of mortgage lending products to meet their
customer needs. All fixed rate long-term loans originated by AMI are sold in the
secondary market. AMI also originates adjustable rate and balloon loans for sale
to affiliate banks and other investors. AMI continues to service most of the
loans that are sold.
 
     AMCORE Consumer Finance Company, Inc. (FINANCE), (f/k/a Mid-American
Financial Services Company), a wholly-owned consumer finance company, was
incorporated under the laws of the State of Nevada in September 1989 and was
acquired by AMCORE in February 1990. Through FINANCE, AMCORE provides
installment and real estate loans to a segment of the market not served by
AMCORE's affiliate banks. FINANCE has also focused its efforts with a "second
chance" lending program for loan applicants that have been rejected by the
mortgage and banking affiliates, as well as offering small ticket lease
financing and other direct financing programs.
 
     AMCORE Financial Life Insurance Company (AFLIC), a wholly-owned subsidiary,
was incorporated under the laws of the State of Arizona in 1984. Through AFLIC,
AMCORE is engaged in reinsuring credit life and accident and health insurance in
conjunction with the lending activities of the affiliate banks.
 
     AMCORE Investment Services, Inc. (AIS), a wholly-owned subsidiary of AIG,
was incorporated under the laws of the State of Illinois in October 1990, and in
July 1991, became a member of the National Association of Security Dealers
(NASD). AIS is a full-service brokerage company that offers a full range of
investment alternatives including annuities, mutual funds, stocks, bonds and
AMCORE's Vintage Mutual Fund family.
 
     AMCORE Capital Management, Inc. (ACM) was incorporated under the laws of
the State of Illinois in December 1992 and is a wholly-owned subsidiary of AIG.
ACM manages the assets of AMCORE's Vintage Mutual Fund family, which were
introduced in December 1992, as well as trust and other private investor assets.
 
     Investors Management Group, LTD (IMG) was incorporated under the laws of
the State of Iowa in June 1992 and became a wholly-owned subsidiary of AIG on
February 17, 1998. IMG is an asset management company whose primary clients
include mutual funds, insurance companies, banks, retirement plans, foundations,
endowments, and individuals.
 
     AMCORE Insurance Group, Inc. (AIGI) was incorporated under the laws of the
State of Illinois as a wholly-owned subsidiary of ROCKFORD in March 1994. AIGI's
main office is in South Beloit, Illinois. AIGI obtained approval from the Office
of the Comptroller of the Currency to engage in the insurance agency business,
and offers a complete line of commercial and individual insurance products
including life, homeowners and automobile insurance.
 
     AMCORE Investment Banking, Inc. (AIB) was incorporated under the laws of
the State of Illinois as a wholly-owned subsidiary in November 1993. AIB
obtained approval in July 1993 from the Board of Governors of the Federal
Reserve System (FRB) to perform financial advisory and private placement
services. In 1995, AIB withdrew its brokerage membership with the NASD and, as
such, is currently an inactive subsidiary of AMCORE.
 
                                        4
<PAGE>   5
 
COMPETITION
 
     Active competition exists in all services offered by AMCORE's bank and
non-bank affiliates with other national and state banks, savings and loan
associations, credit unions, finance companies, personal loan companies,
brokerage and mutual fund companies, mortgage bankers, insurance agencies,
financial advisory services, collection agencies, and other financial
institutions serving the affiliates' respective market areas. The principal
competitive factors in the banking and financial services industry are quality
of services to customers, ease of access to services and pricing of services,
including interest rates paid on deposits, interest rates charged on loans, and
fees charged for fiduciary and other professional services.
 
     Since 1982, when Illinois multi-bank holding company legislation became
effective, there have been many bank mergers and acquisitions in Illinois. These
combinations have had the effect of increasing the assets and deposits of bank
holding companies involved in such activities. Illinois legislation, effective
December 1, 1990, permitted bank acquisitions in Illinois by institutions
headquartered in any other state which has reciprocal legislation, further
increasing competition. See "Supervision and Regulation".
 
     On September 29, 1994, Congress passed laws allowing interstate banking and
interstate branching. A year later, nationwide interstate banking became
effective allowing institutions to make acquisitions in any state. Beginning
July 1, 1997, interstate branching became effective, and banks can merge with
affiliate banks or establish de novo branches in any state. Individual states,
however, have the right to opt out of interstate branching.
 
EMPLOYMENT
 
     AMCORE had 1,416 full-time equivalent employees as of December 31, 1997.
AMCORE provides a variety of benefit plans to its employees including health,
dental, group term life and disability insurance, childcare reimbursement,
retirement, profit sharing, 401(k) and flexible spending accounts, incentive
stock option, stock purchase and dividend reinvestment plans. AMCORE believes
that its relationship with its employees is good.
 
SUPERVISION AND REGULATION
 
     AMCORE is subject to regulations under the Bank Holding Company Act of
1956, as amended (the Act), and is registered with the FRB under the Act. AMCORE
is required by the Act to file quarterly and annual reports of its operations
and such additional information as the FRB may require and is subject, along
with its subsidiaries, to examination by the FRB.
 
     The acquisition of five percent or more of the voting shares or all or
substantially all of the assets of any bank requires the prior approval of the
FRB and is subject to certain other federal and state law limitations. The Act
also prohibits, with certain exceptions, a holding company from acquiring direct
or indirect ownership or control of more than five percent of the voting shares
of any company which is not a bank and from engaging in any business other than
banking, managing and controlling banks or furnishing services to banks and
their subsidiaries, except that holding companies may engage in, and may own
shares of companies engaged in, certain businesses bound by the FRB to be "so
closely related to banking...as to be a proper incident thereto". On August 31,
1993, the FRB approved an amendment to add certain activities and to reduce the
burden on bank holding companies that desire to conduct these activities by
simplifying the regulatory review process.
 
     Under current regulations of the FRB, a holding company and its non-bank
subsidiaries are permitted, among other activities, to engage in such
banking-related businesses as sales and consumer finance, equipment leasing,
computer service bureau and software operations, mortgage banking, brokerage and
financial advisory services. The Act does not place territorial restrictions on
the activities of non-bank subsidiaries of bank holding companies. In addition,
federal legislation prohibits acquisition of "control" of a bank or bank holding
company without prior notice to certain federal bank regulators. "Control" is
defined in certain cases as acquisition of ten percent or more of the
outstanding shares of a bank or bank holding company.
 
                                        5
<PAGE>   6
 
     Federal and state laws and regulations of general application to banks
regulate, among other things, the scope of business, investments, reserves
against deposits, capital levels relative to assets and risk, the nature and
amount of collateral for loans, the establishment of branches, mergers,
consolidations and the payment of dividends.
 
     In late 1992, Congress passed the Federal Deposit Insurance Corporation
Improvement Act of 1992 which included many provisions that have had significant
effects on the cost structure and operational and managerial standards of
commercial banks. In addition to provisions for recapitalization of the Bank
Insurance Fund, the Act contains provisions that revise bank supervision and
regulation, including, among many other things, the monitoring of capital
levels, outline additional management reporting and external audit requirements,
and add consumer provisions that include Truth-in-Savings disclosures.
 
     The foregoing references to applicable statutes and regulations are brief
summaries thereof and do not purport to be complete and are qualified in their
entirety to be referenced to such statutes and regulations.
 
     AMCORE, FNB, and Country are supervised and examined by the FRB.
Nationally-chartered affiliate banks are supervised and regularly examined by
the Office of the Comptroller of the Currency (OCC) and are subject to
examination by the FRB. The state-chartered affiliate banks are supervised and
regularly examined by the Illinois Commissioner of Banks. In addition, all
affiliate banks are subject to periodic examination by the Federal Deposit
Insurance Corporation (FDIC).
 
     AMI is supervised and examined by the FRB and is also licensed and
regulated by the Office of the Commissioner of Savings and Loan Associations of
the State of Illinois. FINANCE is regulated by the Illinois Department of
Financial Institutions. AFLIC is supervised and examined by the Department of
Insurance of the State of Arizona. Under Arizona law, investments, capital
levels and the level of claim reserves, among other things, are subject to
regulation. AIS and ACM are supervised and examined by the NASD and are
regulated by the Securities and Exchange Commission (SEC). AIGI is supervised
and examined by the Department of Insurance of the State of Illinois, and is
regulated by the OCC.
 
SUBSIDIARY DIVIDENDS AND CAPITAL
 
     Legal limitations exist as to the extent to which the bank subsidiaries can
lend or pay dividends to AMCORE. The payment of dividends by national banks
without prior regulatory approval is limited to the current year's net income
plus the adjusted retained net income for the two preceding years. The payment
of dividends by any bank or bank holding company is affected by the requirement
to maintain adequate capital pursuant to the capital adequacy guidelines issued
by the FRB and regulations issued by the FDIC and the OCC (collectively
"Agencies"). As of December 31, 1997, approximately $49.3 million was available
for payment to AMCORE in the form of dividends without prior regulatory
approval. The bank subsidiaries are also limited as to the amount they may lend
to AMCORE. At December 31, 1997, the maximum amount available to AMCORE in the
form of loans approximated $28.3 million.
 
     In 1990, the FRB established risk-based capital guidelines for bank holding
companies. These capital rules require minimum capital levels as a percent of
risk-weighted assets. Banking organizations must have minimum capital ratios of
4% and 8% for Tier 1 capital and total capital, respectively. The FRB also
established leverage capital requirements intended primarily to establish
minimum capital requirements for those banking organizations that have
historically invested a significant portion of their funds in low risk assets.
Federally supervised banks are required to maintain a minimum leverage ratio of
not less than 4%. Refer to the Capital section of Item 7 for a summary of
AMCORE's capital ratios as of December 31, 1997 and 1996.
 
GOVERNMENTAL MONETARY POLICIES AND ECONOMIC CONDITIONS
 
     The earnings of all subsidiaries are affected not only by general economic
conditions, but also by the policies of various regulatory authorities. In
particular, the FRB influences general economic conditions and interest rates
through various monetary policies and tools. It does so primarily through
open-market operations in U.S. Government securities, varying the discount rate
on member and non-member bank borrowings, and setting reserve requirements
against bank deposits. FRB monetary policies have had a significant effect on
the
 
                                        6
<PAGE>   7
 
operating results of banks in the past and will continue to do so in the future.
The general effect of such policies upon the future business and earnings of
each of the subsidiary banks cannot accurately be predicted.
 
     Interest rate sensitivity has a major impact on the earnings of bank
affiliates. As market rates change, yields earned on assets may not necessarily
move to the same degree as rates paid on liabilities. For this reason, AMCORE
attempts to minimize earnings volatility related to fluctuations in interest
rates through the use of a formal asset/liability management program and certain
off-balance sheet derivative activities. See Item 7 and Note 11 included under
Item 8 for additional discussion of interest rate sensitivity and related
derivative activities.
 
EXECUTIVE OFFICERS OF THE REGISTRANT
 
     The following table contains certain information about the executive
officers of AMCORE. There are no family relationships between any director or
executive officer of AMCORE.
 
<TABLE>
<CAPTION>
           NAME               AGE        PRINCIPAL OCCUPATION WITHIN THE LAST FIVE YEARS
           ----               ---        -----------------------------------------------
<S>                           <C>    <C>
Robert J. Meuleman........    58     President and Chief Executive Officer of AMCORE since
                                     January 1996. Previously Executive Vice President and
                                     Chief Operating Officer--Banking Subsidiaries of AMCORE
                                     from December 1991 to January 1996.
Kenneth E. Edge...........    52     Executive Vice President and Chief Operating Officer of
                                     AMCORE since April, 1997. Previously Group Vice
                                     President, Banking Subsidiaries from June 1995 to
                                     April, 1997 and Executive Vice President of ROCKFORD
                                     from July 1992 to June 1995.
Charles E. Gagnier........    64     Executive Vice President, Bank Mergers and Acquisitions
                                     of AMCORE and Chairman of the Board of Directors of
                                     ROCKFORD since January 1997. Previously President and
                                     Chief Executive Officer of ROCKFORD from January 1992
                                     to December 1996.
John R. Hecht.............    39     Executive Vice President and Chief Financial Officer of
                                     AMCORE since December, 1997. Previously Senior Vice
                                     President and Chief Financial Officer of AMCORE from
                                     July 1992 to December 1997.
James S. Waddell..........    53     Executive Vice President, Chief Administrative Officer
                                     and Corporate Secretary of AMCORE since January 1994.
                                     Previously Senior Vice President of Administration of
                                     AMCORE from July 1992 to January 1994.
Alan W. Kennebeck.........    52     Group Vice President, AMCORE. President and Chief
                                     Executive Officer of AIG; and Chief Executive Officer
                                     of AIS since July 1995. Previously President of AIS
                                     from July 1995 to December, 1997; and Chief Operating
                                     Officer of Piper Trust Co. from 1993 to July 1995.
Charie A. Zanck...........    45     Group Vice President, AMCORE, since May 1997.
                                     Previously President and Chief Executive Officer of
                                     Northwest from June 1993 to May 1997; and Chief
                                     Operating Officer and Executive Vice President of
                                     Northwest from June 1992 to June 1993.
William T. Hippensteel....    41     Senior Vice President and Corporate Marketing Director
                                     of AMCORE since January 1993.
</TABLE>
 
                                        7
<PAGE>   8
 
<TABLE>
<CAPTION>
           NAME               AGE        PRINCIPAL OCCUPATION WITHIN THE LAST FIVE YEARS
           ----               ---        -----------------------------------------------
<S>                           <C>    <C>
James F. Warsaw...........    47     President and Chief Executive Officer of ROCKFORD since
                                     January 1997. Previously Executive Vice President and
                                     Chief Operating Officer of ROCKFORD from June 1995 to
                                     December 1996, and Executive Vice President and Senior
                                     Credit Officer of ROCKFORD from December 1992 to May
                                     1995.
</TABLE>
 
                               ITEM 2. PROPERTIES
 
     On December 31, 1997, AMCORE had 70 locations, of which 51 were owned and
19 were leased. All of these offices are considered by management to be well
maintained and adequate for the purpose intended. See Notes 6 and 7 of the Notes
to Consolidated Financial Statements included under Item 8 of this document for
further information on properties.
 
                           ITEM 3. LEGAL PROCEEDINGS
 
     Management believes that no litigation is threatened or pending in which
AMCORE faces potential loss or exposure which will materially affect AMCORE's
stockholders' equity or financial position. Since AMCORE's subsidiaries act as
depositories of funds, trustee and escrow agents, they are named as defendants
in lawsuits involving claims to the ownership of funds in particular accounts.
This and other litigation is incidental to AMCORE's business.
 
          ITEM 4. SUBMISSION OF MATTERS TO A VOTE OF SECURITY HOLDERS
 
     No matters were submitted to a vote of security holders during the fourth
quarter of 1997.
 
                                        8
<PAGE>   9
 
                                    PART II
 
              ITEM 5. MARKET FOR THE REGISTRANT'S COMMON STOCK AND
                          RELATED STOCKHOLDER MATTERS
 
     See Item 6 and 8 of this document for information on stock price ranges and
dividends. The principal market for the quotations of stock prices is the NASDAQ
National Market System. There are approximately 6,500 holders of record of
AMCORE's common stock.
 
                        ITEM 6. SELECTED FINANCIAL DATA
 
                FIVE YEAR COMPARISON OF SELECTED FINANCIAL DATA
 
<TABLE>
<CAPTION>
                                                  1997          1996          1995          1994          1993
                                                  ----          ----          ----          ----          ----
                                                             (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                            <C>           <C>           <C>           <C>           <C>
FOR THE YEAR:
Interest income............................    $  261,507    $  235,036    $  202,268    $  172,279    $  169,219
Interest expense...........................       148,960       128,902       104,017        76,761        74,609
                                               ----------    ----------    ----------    ----------    ----------
Net interest income........................       112,547       106,134        98,251        95,518        94,610
Provision for loan and lease losses........         7,045         5,428         3,165         1,751         2,762
Non-interest income........................        47,708        42,270        36,874        33,891        32,693
Operating expense..........................       115,628        98,939       101,730        92,604        89,640
                                               ----------    ----------    ----------    ----------    ----------
Income before income taxes.................        37,582        44,037        30,230        35,054        34,901
Income taxes...............................         8,918        12,161         7,205         9,321         9,195
                                               ----------    ----------    ----------    ----------    ----------
Net income.................................    $   28,664    $   31,876    $   23,025    $   25,733    $   25,706
                                               ==========    ==========    ==========    ==========    ==========
Return on average assets(1)(2).............          0.81%         1.00%         0.85%         1.03%         1.08%
Return on average equity(1)(2).............         10.66         13.14         10.27         12.30         13.39
Net interest margin........................          3.64          3.81          4.12          4.48          4.60
                                               ----------    ----------    ----------    ----------    ----------
AVERAGE BALANCE SHEET:
Total assets...............................    $3,520,229    $3,181,646    $2,715,520    $2,504,516    $2,387,674
Loans and leases, net of unearned income...     1,867,355     1,711,850     1,557,375     1,391,037     1,274,200
Earning assets.............................     3,325,778     2,967,054     2,501,973     2,294,262     2,186,609
Deposits...................................     2,399,423     2,274,191     2,182,327     2,102,098     2,032,189
Long-term borrowings.......................       132,533       159,504        34,367        29,004        34,568
Stockholders' equity.......................       268,996       242,657       224,219       209,161       191,953
                                               ----------    ----------    ----------    ----------    ----------
ENDING BALANCE SHEET:
Total assets...............................    $3,667,690    $3,331,995    $2,903,282    $2,607,626    $2,421,104
Loans and leases, net of unearned income...     1,962,674     1,807,121     1,620,365     1,481,497     1,320,204
Earning assets.............................     3,452,398     3,114,450     2,635,111     2,366,480     2,148,414
Deposits...................................     2,527,043     2,351,490     2,208,838     2,119,063     2,033,741
Long-term borrowings.......................       159,125       131,612       115,752        30,157        35,204
Stockholders' equity.......................       287,476       257,420       242,096       212,571       202,589
                                               ----------    ----------    ----------    ----------    ----------
FINANCIAL CONDITION ANALYSIS:
Allowance for loan losses to year-end
  loans....................................          1.01%         1.07%         1.06%         1.16%         1.35%
Allowance to non-performing loans..........        100.20        156.84        123.06        127.20        130.24
Net charge-offs to average loans...........          0.34          0.19          0.21          0.17          0.17
Non-performing loans to net loans..........          1.01          0.68          0.86          0.92          1.04
Average long-term borrowings to average
  equity...................................         49.27         65.73         15.33         13.87         18.01
Average equity to average assets...........          7.64          7.63          8.26          8.35          8.04
                                               ----------    ----------    ----------    ----------    ----------
STOCKHOLDERS' DATA:
Basic earnings per share...................    $     1.07    $     1.20    $     0.87    $     0.97    $     0.97
Diluted earnings per share.................          1.05          1.18          0.86          0.96          0.97
Book value per share.......................         10.68          9.64          9.10          8.03          7.65
Dividends per share........................          0.45          0.38          0.33          0.31          0.23
Dividend payout ratio......................         42.06%        31.67%        37.93%        31.96%        23.71%
Average common shares outstanding..........        26,862        26,649        26,504        26,443        26,392
                                               ==========    ==========    ==========    ==========    ==========
</TABLE>
 
- ---------------
(1) The 1997 ratios excluding the impact of the $6.4 million, or $.24 per share,
    after tax merger related and information systems charges: return on average
    assets 1.00%; return on average equity 13.05%
 
(2) The 1995 ratios excluding the impact of the $3.5 million, or $.13 per share,
    after-tax impairment and merger-related charges: return on average assets
    0.98%; return on average equity 11.81%
 
                                        9
<PAGE>   10
 
           ITEM 7. MANAGEMENT DISCUSSION AND ANALYSIS OF THE RESULTS
                      OF OPERATION AND FINANCIAL CONDITION
 
     The following discussion highlights the significant factors affecting the
operations and financial condition of AMCORE for the three years ended December
31, 1997. The discussion should be read in conjunction with the consolidated
financial statements, accompanying notes, and selected financial data appearing
elsewhere within this report. The financial statements and this discussion have
been restated to reflect the mergers with First National Bancorp, Inc. (FNB) and
Country Bank Shares Corporation (Country) and a three-for-two stock split.
 
     This review contains certain forward-looking statements within the meaning
of the private securities litigation reform act of 1995 with respect to the
results of operations and businesses of AMCORE. These forward-looking statements
involve certain risks and uncertainties. Contemplated or projected, forecast or
estimated in such forward-looking statements include, among others, the
following possibilities: (I) heightened competition, including specifically the
intensification of price competition, the entry of new competitors and the
formation of new products by new and existing competitors; (II) adverse state
and federal legislation and regulation; (III) failure to obtain new customers
and retain existing customers; (IV) inability to carry out marketing and/or
expansion plans; (V) loss of key executives; (VI) changes in interest rates
including effect of prepayment; (VII) general economic and business conditions
which are less favorable than expected; (VIII) unanticipated changes in industry
trends; (IX) changes in Federal Reserve Board monetary policies; (X) inability
to realize cost savings anticipated with mergers or data processing outsourcing;
and (XI) higher than expected costs or other difficulties associated with merger
integration or data processing conversion.
 
OVERVIEW OF OPERATIONS
 
     AMCORE reported net income of $28.7 million for the year ended December 31,
1997. This compares to the $31.9 million and $23.0 million reported for the
years ended 1996 and 1995, respectively. Diluted earnings per share for 1997
were $1.05 compared to $1.18 in 1996 and $0.86 in 1995. Merger and core bank
data processing outsourcing charges of $6.4 million after tax or $0.24 per share
are the primary causes of the decline in earnings between 1997 and 1996.
Excluding these charges, net income from operations increased $3.2 million or
10.1% primarily from an increase in net interest income related to a 11.5%
increase in average earning assets.
 
     This level of net income resulted in a return on average equity for 1997 of
10.66% versus 13.14% in 1996 and 10.27% in 1995. AMCORE's return on average
assets for 1997 was 0.81% compared to 1.00% in 1996 and 0.85% in 1995. If the
above mentioned merger and core bank data processing charge are excluded, the
return on average equity and return on average assets would be 13.05% and 1.00%,
respectively.
 
     In March of 1997, AMCORE issued $40 million of capital securities through
AMCORE Capital Trust I ("Trust"), a statutory business trust. The capital
securities pay cumulative cash distributions semiannually at an annual rate of
9.35%. The capital securities qualify as Tier I capital for regulatory capital
purposes.
 
     On April 18, 1997, AMCORE entered the interstate banking arena upon
completing its merger with FNB located in Monroe, Wisconsin. AMCORE issued
2,822,286 shares of common stock to the FNB shareholders to effect the merger.
FNB has approximately $219 million of assets and five locations. The transaction
was accounted for as a pooling of interests. Merger related charges of $1.4
million after-tax were recorded at closing.
 
     On July 16, 1997, AMCORE expanded its presence in Wisconsin with the
completion of the merger with Country, Mt. Horeb, Wisconsin. AMCORE issued
2,469,417 shares of common stock to Country shareholders. Country has
approximately $310 million in assets and nine locations. The transaction was
accounted for as a pooling of interests. Merger expenses of $2.5 million
after-tax were recorded at closing.
 
     During August of 1997, AMCORE signed an outsourcing agreement with ALLTEL
for its core bank data processing. The anticipated benefits of outsourcing
mainframe data processing include year 2000 compliant systems, a standardized
platform, current software release and operating systems, and an ability to
                                       10
<PAGE>   11
 
assimilate acquisitions more quickly and less expensively. AMCORE recorded a
$2.6 million after tax charge related to write-offs of obsolete software and
equipment, severance for staff reductions and conversion costs. AMCORE
anticipates modest cost reductions initially with future costs dependent on
volume. AMCORE has established a project team to prepare for the year 2000.
AMCORE has taken an active approach toward addressing this issue, and is
currently in the process of assessing its information systems, testing and
validating in-house systems, and obtaining validation and certification of
outside systems in an effort to identify and correct potential problems in
advance of the year 2000. At this point the internal costs associated with the
year 2000 are not anticipated to have a material impact on future performance.
Uncertainties related to customers ability to repay loans may have the potential
to have a material impact, however, it is too early to estimate the financial
consequences.
 
     As of September 17, 1997, AMCORE completed a three-for-two stock split to
shareholders of record on September 5, 1997. This split increased the shares
outstanding from 17,941,288 to 26,907,805.
 
     On February 17, 1998, AMCORE completed it's merger with Investors
Management Group, LTD (IMG) of Des Moines, Iowa. AMCORE issued 270,139 shares at
closing with additional shares to be issued contingent upon IMG's future
performance. IMG is Iowa's largest independent asset management firm with more
than $1.6 billion of assets under management. IMG's expertise in fixed income
securities will complement AMCORE's equity management skills, including the
award winning Vintage family of mutual funds to bring total assets under
management to over $3.7 billion. The transaction was a stock exchange accounted
for using the purchase method of accounting.
 
     On December 31, 1997 AMCORE transferred all of the satellite dish
receivables (approximately $15.0 million) to held for sale and recognized a $3.0
million after-tax fair value adjustment on this portfolio. This portfolio was
sold on January 28, 1998.
 
     AMCORE is scheduled to complete the merger with Midwest Federal Financial
Corp. of Baraboo, Wisconsin (Midwest) on March 27, 1998. AMCORE will issue
approximately 1.9 million shares to the Midwest shareholders. Midwest has total
assets of $212 million and nine offices.
 
     This merger will be a stock for stock exchange to be accounted for as
pooling of interests. Upon completing this acquisition AMCORE will have 22
offices and total assets of approximately $750 million in Wisconsin.
 
     AMCORE views the above acquisitions as a means of expanding within its
geographic area and anticipates that they will contribute favorably to future
results. AMCORE anticipates, that in the future, it will have the opportunity to
acquire other financial institutions.
 
     AMCORE continues to be "well capitalized" as defined by regulatory
guidelines. At December 31,1997, the company's total capital to risk weighted
assets was 14.38%.
 
EARNINGS SUMMARY
 
     The following highlights the major components of net income and their
impact for the last two years.
 
NET INTEREST INCOME
 
     Net interest income is the difference between income earned on
interest-earning assets and the interest expense incurred on interest-bearing
liabilities. The interest income on certain loans and investment securities is
not subject to Federal income tax. For analytical purposes, at December 31,
1997, 1996 and 1995, the interest income and rates on these types of assets are
adjusted to a "fully taxable equivalent" basis, net of the
 
                                       11
<PAGE>   12
 
effect of any interest expense disallowed. The fully taxable equivalent
adjustment was calculated using the Company's statutory Federal income tax rate
of 35%. Adjusted interest income is as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                  YEAR ENDED          YEAR ENDED          YEAR ENDED
                                               DECEMBER 31, 1997   DECEMBER 31, 1996   DECEMBER 31, 1995
                                               -----------------   -----------------   -----------------
<S>                                            <C>                 <C>                 <C>
Interest Income Book Basis...................      $261,507            $235,036            $202,268
Taxable Equivalent Adjustment................         9,234               8,456               6,662
                                                   --------            --------            --------
Interest Income Taxable
Equivalent Basis.............................       270,741             243,492             208,930
Interest Expense.............................       148,960             128,902             104,017
                                                   --------            --------            --------
Net Interest Income Taxable
Equivalent Basis.............................      $121,781            $114,590            $104,913
                                                   ========            ========            ========
</TABLE>
 
     Net interest income on a fully taxable equivalent basis increased $7.2
million or 6.3% in 1997 and $9.7 million or 9.2% in 1996. The improvement in net
interest income during 1997 results mainly from a 11.5% increase in average
earning assets which was partially offset by a narrowing in the interest rate
spread. During 1996, the improvement in net interest income related to a 19.4%
growth in average earning assets, the majority of which was offset by a narrowed
interest rate spread.
 
     The growth in average earning assets in both 1997 and 1996 can be
attributed to strong loan growth and increased levels of investment securities
related to the investment leveraging program. Average loans increased
approximately $155 million in both 1997 and 1996, which represented an increase
of 9.1% and 9.9%, respectively.
 
     The investment leveraging program, which is designed to better utilize
capital, averaged $620 million in 1997, an increase of approximately $170
million in 1997 following a $295 million increase in 1996. This program
contributed approximately $9.1 million in 1997, $6.2 million in 1996 and $2.2
million in 1995 to net interest income. The program is funded through the use of
repurchase agreements, Federal Home Loan Bank ("FHLB") borrowings and a portion
of the brokered CD's. The proceeds of these borrowings are invested principally
in mortgage-backed and U.S. government agency securities.
 
     The net interest spread is the difference between the average rates on
interest-earning assets and the average rates on interest-bearing liabilities.
The interest rate margin represents net interest income divided by average
earning assets. These ratios can also be used to analyze net interest income.
Since a significant portion of the Company's funding is derived from
interest-free sources, primarily demand deposits and total stockholders' equity,
the effective rate paid for all funding sources is lower than the rate paid on
interest-bearing liabilities alone.
 
     As Table 1 indicates, the interest rate spread declined 22 basis points to
3.00% in 1997 from 3.22% in 1996 which was a decline of 27 basis points from the
1995 level of 3.49%. The interest rate margin was 3.64% in 1997, a decline of 17
basis points from 3.81% in 1996. The 1996 level was a decline of 31 basis points
from 4.12% in 1995.
 
     The interest rate spread on the investment securities in the leveraging
program was 147 basis points in 1997, 137 basis points in 1996, and 141 basis
points in 1995. The interest rate spread on all other earning assets was 3.38%
in 1997, 3.57% in 1996, and 3.73% in 1995. As a result, the effect of this
program accounted for 10 basis points of the decline in the 1997 interest rate
spread and 23 and 8 basis points of the 1996 and 1995 decreases. The interest
rate margin was also negatively impacted by the investment leveraging program by
approximately 6 basis points in 1997, 29 basis points in 1996 and 12 basis
points in 1995. The core interest rate margin which excludes the effect of the
investment leveraging program was 4.14%, 4.25%, and 4.40% for 1997, 1996, and
1995, respectively.
 
     The level of net interest income is the result of the relationship between
total volume and mix of interest-earning assets and the rates earned, and the
total volume and mix of interest-bearing liabilities and the rates paid. The
rate and volume components associated with interest-earning assets and
interest-bearing liabilities
 
                                       12
<PAGE>   13
 
can be segregated to analyze the year-to-year changes in net interest income.
Changes due to rate/volume variances have been allocated between changes due to
average volume and changes due to average rate based on the percentage of each
to the total change of both categories. Because of changes in the mix of the
components of interest-earning assets and interest-bearing liabilities, the
computations for each of the components do not equal the calculation for
interest-earning assets as a total and interest-bearing liabilities as a total.
Table I analyzes the changes attributable to the rate and volume components of
net interest income.
 
Changes Due to Volume
 
     The change in net interest income due to average volume in 1997 relates to
the 9.1% growth in average loans and a 15.5% growth in average investment
securities which was partially offset by 7.8% growth in time deposits and 44.4%
growth in short-term borrowings.
 
     The 1996 increase in net interest income due to the change in average
volume is attributable to the 9.9% growth in average loans and 36.1% growth in
average investment securities. This increase was partially offset by an increase
in borrowings of 124.7% used to fund the investment leveraging program.
 
Changes Due to Rate
 
     The yield on earning assets declined 1 basis point in 1997 as a 20 basis
point increase in the yield on investment securities offset most of the decline
in yields on other earning assets. The rate paid on interest bearing liabilities
increased 21 basis points. The rate paid on interest bearing deposits increased
due to the new AMDEX money market account which indexed to Treasury yields. The
rate on short term borrowings increased as the current portion of longer term
FHLB borrowings rolled into this category. The rate on long term debt increased
65 basis points as the previously mentioned 9.35% capital trust securities,
which qualify as tier I capital, replaced lower rate FHLB borrowing and bank
lines.
 
     The yield on earning assets declined 16 basis points in 1996. The decline
is mainly a result of average investment securities, which typically have a
lower yield, increasing at a faster rate than average loans. Average investment
securities represented 41.7% of average earning assets in 1996 versus 36.6% in
1995. The rate paid on average total interest-bearing liabilities increased 12
basis points in 1996 as average total borrowings, which had a higher cost than
other average total interest-bearing liabilities, increased to 24.0% of average
total interest-bearing liabilities in 1996 versus 12.9% in 1995.
 
PROVISION FOR LOAN AND LEASE LOSSES
 
     The provision for loan and lease losses is an amount added to the allowance
against which loan and lease losses are charged. Management determines an
appropriate provision for loan losses based upon historical loss experience,
regular evaluation of collectibility by lending officers and the corporate loan
review staff, and the size and nature of the loan portfolios. Other factors
include economic and industry outlooks, concentration characteristics of the
loan portfolio and the composition of problem loans.
 
     The provision for loan and lease losses was $7.0 million for 1997, an
increase of $1.6 million or 29.8% from the $5.4 million in 1996. The 1997
increase in provision is due to 8.6% growth in loans and charge-offs on
satellite dish receivables. During 1996, the provision increased $2.2 million
from the 1995 level of $3.2 million. The increase in the provision in 1996 was
primarily related to the growth in the loan portfolio of 11.5%, as both
non-performing loans and net charge-offs as a percent of loans declined in 1996.
 
     During 1997, AMCORE recorded net charge-offs of $6.4 million, an increase
of $3.2 million from the 1996 level of $3.2 million mainly as a result of $2.7
million of charge-offs on satellite dish receivables. The 1996 amount remained
level with the 1995 amount of $3.3 million. AMCORE anticipates that continued
growth in the loan portfolio or weakening economic conditions could cause
continued increases in the provision for loan and lease losses. The sale of the
satellite dish receivable portfolio is anticipated to stabilize the level of
charge-offs. The allowance for loan and lease losses as a percent of total loans
was 1.01%, 1.07%, and 1.06% in 1997, 1996, and 1995, respectively. The allowance
for loan and lease losses to non-performing loans was 100.2% at year end 1997,
156.8% at year end 1996, and 123.1% at year end 1995.
 
                                       13
<PAGE>   14
 
NON-INTEREST INCOME
 
     Total non-interest income is comprised primarily of fee based revenues from
mortgage, trust, brokerage, asset management, insurance and collection agency
services. Fees from bank-related services, mainly on deposits and credit cards,
along with net securities gains or losses are also included in this category.
Total non-interest income increased $5.4 million or 12.9% in 1997 and totaled
$47.7 million. This followed a 14.6% or $5.4 million increase in 1996.
 
     Trust and asset management income, the largest source of fee based
revenues, totaled $16.5 million, an increase of $2.4 million or 16.7%. The 1996
growth of trust and asset management fees was $1.8 million or 14.3%. The growth
in both years is attributable to favorable market performance of trust accounts,
growth in proprietary Vintage mutual funds and new trust accounts. As of
December 31, 1997, the AMCORE family of Vintage mutual funds totaled $871
million and trust assets under administration totaled $2.9 billion. AMCORE
anticipates that the previously mentioned acquisition of IMG will cause an
increase in trust and asset management revenues. However, trust and asset
management revenues are dependent on market performance, plan terminations,
corporate profit sharing contributions, and other economic factors.
 
     Service charges on deposits totaled $7.8 million in 1997, an increase of
$151,000 or 2.0% from the $7.7 million in 1996. During 1996, service charges on
deposits decreased $70,000 or 0.9%. Service charges on deposits are impacted
primarily by the level of deposits commercial customers maintain to compensate
for services.
 
     Mortgage revenue includes fees generated from underwriting, originating and
servicing of mortgage loans along with gains realized from the sale of these
loans. Mortgage revenues declined $309,000 or 6.6% to total $4.3 million in
1997. This decline was caused by the January 1, 1997, adoption of FAS No. 125,
which requires purchased and deferred excess mortgage servicing rights to be
valued under similar methods as prescribed in FAS No. 122 for originated
mortgage servicing rights. Mortgage revenues increased $1.1 million or 29.7% in
1996. Both years were positively impacted by increased mortgage servicing
volume.
 
     Effective January 1, 1995, the mortgage company adopted Financial
Accounting Standard (FAS) No. 122 "Accounting for Mortgage Servicing Rights",
which had a $1.1 million positive impact on mortgage revenues in 1995. The
accounting standard allows for the recognition of the value of servicing rights
on originated mortgage loans and results in an asset that is amortized over the
remaining estimated lives of serviced loans. While this has a favorable impact
on earnings at the time of origination, additional earnings volatility may occur
with changes in market conditions, particularly with fluctuations in interest
rates. For example, a decline in interest rates could result in accelerated
mortgage prepayments, which may reduce the value of this asset and require a
write-down through a valuation reserve. If subsequent valuations result in an
increase of value, recoveries can be recorded through the valuation allowance,
to the extent of the previous write-downs. The adoption of these standards may
cause increased volatility in mortgage revenues as described above.
 
     A reduction in long-term mortgage rates would create an upward trend in
origination volumes, particularly with refinancing activity. This has a positive
impact on mortgage revenues; and could be partially offset the possible
write-downs of existing mortgage service rights. As of December 31, 1997, AMCORE
had $5.8 million of capitalized mortgage servicing rights and a servicing
portfolio of nearly $1 billion. In order to reduce AMCORE's exposure to
valuation risk of mortgage servicing, an agreement has been reached to sell
approximately $200 million of out of market purchased mortgage servicing with a
capitalized value of $2.4 million, with an expected closing in the second
quarter of 1998.
 
     Insurance revenues remained level at $2.2 million in 1997. The 1996
increase resulted from a combination of an increase in sales of credit life
insurance and a change to recording insurance revenue gross prior to deductions
for related expenses. The insurance agency was placed under the management of
the asset management group in late 1997 to increase cross selling opportunities.
 
     Collection fee income totaled $2.1 million in 1997, remaining level with
1996 after an increase of $314,000 or 17.1% from the $1.8 million in 1995. The
collection agency was sold on December 31, 1997.
 
                                       14
<PAGE>   15
 
     Other non-interest income, mainly customer service fees and brokerage
commissions were $10.5 million in 1997, an increase of 9.8%. The 1996 level was
a $1.7 million increase over 1995. The 1997 amount included a $1.9 million gain
on the sale of credit card receivables and 1996 included a $1.4 million gain on
the sale of merchant bankcard.
 
     Net securities gains totaled $4.2 million in 1997 as compared to $1.9
million in 1996 and $2.3 million in 1995. The level of security gains or losses
is dependent on the size of the available for sale portfolio, interest rate
levels, and the company's liquidity needs.
 
OPERATING EXPENSES
 
     Total operating expense was $115.6 million in 1997 an increase of $16.7
million from $98.9 million in 1996 after a $2.8 million decrease from the $101.7
million in 1995. The 1997 increase was due to the $5.0 million adjustment to
fair value of satellite receivables transferred to held for sale, $4.9 million
of merger-related expenses and $4.3 million of expenses related to outsourcing
core bank data processing. Excluding these charges, operating expenses from
normal operations would have increased $2.8 million or 2.8%. The efficiency
ratio, excluding the above mentioned charges, improved to 60.0% as operating
revenues increased 8.0% during 1997. During 1995, AMCORE recorded $5.6 million
of impairment and merger related charges. Without these charges, total operating
expense would have increased $2.8 million or 2.9% in 1996. The impairment
charge, caused by the adoption of FAS No. 121, totaled $3.3 million and included
write-downs of intangibles from the acquisition of a collection agency, and
reductions of the carrying values assigned to bank facilities (See Note 7 of the
Notes to Consolidated Financial Statements). The remaining $2.3 million charge
was comprised primarily of merger-related costs from the mergers in 1995 and
1994.
 
     Personnel costs, which includes compensation expense and employee benefits,
are the largest component of operating expenses. Personnel costs totaled $58.9
million in 1997 an increase of $2.8 million or 5.0%. Excluding the outsourcing
and merger related costs in 1997, the increase would have been $1.6 million or
2.8%. The higher costs in 1997 were primarily caused by normal merit increases.
Personnel costs increased $2.2 million in 1996, an increase of 4.2%. Excluding
the merger related costs in 1995, the increase would have been $3.1 million or
5.8%. The higher costs in 1996 were primarily caused by increased levels of
performance driven expenses, including incentive pay and profit sharing, as well
as higher medical insurance costs.
 
     Net occupancy and equipment expenses were $15.2 million for 1997, an
increase of $175,000. This increase includes $1.3 million of expenses related to
merger. Excluding these expenses, these categories would have decreased as the
benefits of consolidating offices and outsourcing were realized. Net occupancy
and equipment expenses totaled $15.1 million for 1996, a decrease of $294,000
from 1995. If the $1.2 million of merger related charges in 1995 are excluded,
net occupancy and equipment related expenses would have increased $867,000 or
6.1%. The 1996 increase is attributable to the opening of supermarket branches
and the upgrade of information systems hardware and software, including a teller
automation product delivery system.
 
     Professional fees increased $3.2 million to $6.4 million in 1997 primarily
as a result of $2.5 million of merger-related expenses. Professional fees
declined $258,000 or 7.6% to total $3.2 million in 1996 primarily due to merger
related expenses in 1995.
 
     Impairment of long lived assets expense was $2.1 million in 1997 as
software and hardware related to mainframe data processing were written down to
fair value as a result of the decision to outsource. There were no impairment
charges in 1996 and the $3.3 million of charges in 1995, which were related to
customer list intangibles, goodwill and bank facilities as described in Footnote
7.
 
     Intangibles amortization expense totaled $2.2 million in 1997 and 1996,
after a decline of $410,000 or 15.6% from 1995. This decline was due to the run
off of core deposit intangibles and the 1995 impairment charge. This category
will increase approximately $400,000 in 1998 as a result of the previously
mentioned purchase of IMG.
 
                                       15
<PAGE>   16
 
     Other expenses were $23.1 million in 1997, an increase of $3.3 million or
16.7%. This included $1.7 million of expenses related to the mergers and
outsourcing in 1997. Excluding these expenses, this category would have
increased $1.6 million or 8.0%. The primary cause of the remaining increase
related to increased communication expense and amortization of mortgage
servicing rights. The 1996 decrease of $750,000 or 3.7% was related to reduced
insurance expenses due to the reduction of FDIC insurance premiums.
 
INCOME TAXES
 
     Income tax expense totaled $8.9 million in 1997 compared with $12.2 million
and $7.2 million in 1996 and 1995, respectively. The effective tax rates were
23.7%, 27.6%, and 23.8% in 1997, 1996 and 1995, respectively. The effective tax
rate was less than the statutory tax rates due primarily to investments in tax-
exempt municipal bonds and loans. Both the actual dollar decrease and the
decline in effective tax rate in 1997 are a result of lower income before tax
and higher levels of tax exempt income at both the federal and state levels. The
higher rate in 1996 was caused by a higher level of pre-tax earnings and
$300,000 of 1995 tax credits.
 
BALANCE SHEET REVIEW AND LIQUIDITY RISK MANAGEMENT
 
     Liquidity represents the availability of funding to meet the obligations to
depositors, borrowers, and creditors at a reasonable cost without adverse
consequences. Accordingly, the liquidity position is influenced by the funding
base and asset mix.
 
     The parent company requires adequate liquidity to pay its expenses, repay
debt when due and pay stockholder dividends. Liquidity is provided to the parent
through subsidiaries in the form of dividends and fees for services and access
to the capital markets. In 1997, dividends and fees from subsidiaries amounted
to $38.5 million, compared to $40.3 million in 1996. Other liquidity is provided
by cash balances in banks, liquidating short-term investments, commercial paper
borrowings and borrowings on a line of credit. While subsidiary banks are
limited in the amount of dividends they can pay, as of December 31, 1997,
approximately $49.3 million was available for payment to the parent in the form
of dividends which do not require prior regulatory approval.
 
     Cash and cash equivalents decreased $129,000 million from December 31, 1996
to December 31, 1997, as the net cash used for investing activities of $327.0
million in 1997 exceeded the net cash provided from operating activities of
$34.1 million and the net cash provided by financing activities of $292.8
million.
 
     The net decrease in cash provided by operating activities of $18.6 million
from December 31, 1996 to December 31, 1997 was primarily attributable to the
$12.7 million net increase in cash used in mortgage banking activities.
 
     The net decrease in cash used for investing activities of $137.5 million
from December 31, 1996 to December 31, 1997 is the result of the decrease in net
cash used for available for sale securities. The net increase in proceeds of
sales of $296.5 million exceeds the net cash used for purchases of $203.9
million from year to year. The increase in net fed funds sold and other short
term investments of $28.5 million from 1996 to 1997 contributed to the decrease
in cash used for investing activities.
 
     The net cash provided by financing activities decreased by $106.8 million
from December 31, 1996 to December 31, 1997. The decrease results mainly from
the decrease in net cash provided by short-term borrowings of $170.7 million
from 1996 to 1997. The increase in net cash provided by long-term borrowings of
$39.4 million from 1996 to 1997, mainly the issuance of the capital trust
securities, partially offset the decrease in net cash provided by short-term
borrowings.
 
SECURITIES
 
     Total securities as of December 31, 1997 were $1.46 billion, an increase of
$188.5 million or 14.9% over the prior year-end. At December 31, 1997 and 1996,
the total securities portfolio comprised 42.2% and 40.7%, respectively, of total
earning assets.
 
     Substantially all securities are classified available for sale. This
improves AMCORE's ability to manage interest rate and liquidity risk.
Fluctuations in the unrealized gain or loss component of total stockholders'
                                       16
<PAGE>   17
 
equity may result; however, federal banking regulations exclude this component
from regulatory risk-based capital calculations.
 
     The securities portfolio serves a primary role in the overall context of
balance sheet management. The decision to purchase or sell securities is based
upon the current assessment of economic and financial conditions, including the
interest rate environment. The portfolio's scheduled maturities and the
prepayment of mortgage-backed securities represent a significant source of
liquidity. Approximately $152.8 million or 10.5%, of the securities portfolio
will mature in 1998.
 
     Mortgage-backed securities as of December 31, 1997 totaled $ 590.0 million
and represent 40.5% of total securities. The distribution of mortgage-backed
securities include $417.1 million of U.S. government agency mortgage-backed pass
through securities and $83.4 million of agency collateralized mortgage
obligations and $89.5 million of private issue collateral mortgage obligations,
all of which are rated AAA except for $19.9 million of securities rated between
Aa2 and Baa.
 
     At December 31, 1997, securities held to maturity total $15.4 million,
while securities available for sale were $1.44 billion. There were no trading
securities at the end of 1997 or 1996. At December 31, 1997, the held to
maturity securities portfolio included $214,000 of gross unrealized gains and
$26,000 of gross unrealized losses. The securities available for sale portfolio
at the end of 1997 included gross unrealized gains of $18.0 million and gross
unrealized losses of $4.0 million, of which the combined effect, net of tax, is
included as an unrealized loss in stockholders' equity. For comparative
purposes, at December 31, 1996, gross unrealized gains of $8.3 million and gross
unrealized losses of $ 11.6 million were included in the securities available
for sale portfolio. For further analysis of the securities portfolio see Table 4
and Note 3 of the Notes to Consolidated Financial Statements.
 
LOANS AND LEASES
 
     Loans represent the largest component of AMCORE's earning asset base. At
year end 1997, total loans and leases, net of unearned discount, were $1.96
billion, an increase of $155.6 million or 8.6% as compared to 1996. Average
loans increased $155.5 million or 9.1% during 1997. Table 2 indicates the growth
in loans was mainly in the real estate and commercial loan categories.
 
     Commercial, financial and agricultural loan balances totaled $632.4
million, an increase of $63.9 million or 11.2 % when compared to 1996. This
increase was primarily in commercial and industrial in the Rockford and
northwestern Chicago suburban markets and agricultural loans in rural markets.
 
     Total real estate loans were $1.02 billion at year end 1997, an increase of
$121.0 million, or 13.4%, over 1996. The growth from 1996 is attributable to
commercial real estate loans, primarily in the Rockford and northwestern Chicago
suburban markets.
 
     Residential mortgage loans are originated by AMCORE's mortgage affiliate,
of which conforming adjustable rate and balloon residential mortgages are
normally sold to affiliate banks. The fixed-rate residential mortgage loans are
sold in the secondary market to eliminate interest rate risk and generate gains
on the sale of these loans, as well as servicing income. All loans of the
mortgage affiliate are considered held for sale and are recorded at the lower of
cost or market value.
 
     Installment and consumer loans decreased $31.3 million or 9.3 % to end the
year at $305.5 million. The decline in consumer loans was primarily attributable
to the transfer to held for sale of satellite dish receivables and the sale of
the credit card portfolio each of which totaled approximately $15 million.
 
     The scheduled repayments and maturities of loans represent a substantial
source of liquidity. Table 3 shows selected loan maturity data as of December
31, 1997. Approximately 18.8% of the total loans had maturities of one year or
less.
 
DEPOSITS
 
     Total deposits at December 31, 1997, were $2.53 billion, an increase of
$175.6 million or 7.5% when compared to 1996. Average total deposits increased
$125.2 million or 5.5%.
 
                                       17
<PAGE>   18
 
     Core deposits, which include demand deposits, consumer time deposits, and
savings deposits, are considered by management to be the primary and most stable
source of funding. Total core deposits were $2.11 billion at the end of 1997, an
$87.7 million or 4.3% increase over the prior year-end, this increase is
attributable to the new AMDEX money market accounts introduced in 1997. Core
deposits represent 83.74% and 86.22% of total deposits at December 31, 1997 and
1996, respectively. These core deposits are supplemented by large certificates
of deposit, brokered deposits, and time deposits from governmental entities.
Brokered deposits were $222.4 million at year-end 1997, an increase of $101.9
million over the prior year-end. Table 5 shows the maturity distribution of time
deposits over $100,000.
 
BORROWINGS
 
     Short-term and long-term borrowings have provided the financing for the
investment leveraging program. Borrowings totaled $806.6 million at year-end
1997 and were comprised of $647.5 of short-term and $159.1 of long-term. The
increase in borrowings of $125.9 million was primarily in the short-term
category and was primarily used to fund the growth in securities.
 
     Securities sold under agreements to repurchase of $528.6 million and
Federal Home Loan Bank borrowings of $187.9 million are used primarily to fund
the investment leveraging program previously mentioned. These two types of
borrowing represent 88.8% of total borrowings at December 31, 1997 versus 92.2%
at December 31, 1996.
 
     AMCORE issued $40 million of capital securities through AMCORE Capital
Trust I ("Trust"), a statutory business trust, of which all common securities
are owned by AMCORE. The capital securities pay cumulative cash distributions
semiannually at an annual rate of 9.35%. The securities are redeemable from
March 25, 2007 until March 25, 2017 at a declining rate of 104.6750% to 100.0%
of the principal amount. After March 25, 2017, they are redeemable at par until
June 15, 2027 when redemption is mandatory. The capital securities qualify as
Tier I capital for regulatory capital purposes. The proceeds of these securities
were used to repay the parent company term loan, debt of acquired companies, and
other general corporate purposes.
 
     The parent company has a commercial paper placement agreement with an
unrelated financial institution that provides for the issuance of non-rated
short-term unsecured debt obligations at negotiated rates and terms, not to
exceed $25,000,000. In the event the agent is unable to place the parent
company's commercial paper on a particular day, the proceeds are provided by
overnight borrowings on a reciprocal line of credit with the same financial
institution.
 
ASSET QUALITY REVIEW AND CREDIT RISK MANAGEMENT
 
     AMCORE's credit risk is centered in the loan and lease portfolio which on
December 31, 1997, totaled $1.96 billion, or 56.8%, of total earning assets. The
objective in managing loan portfolio risk is to quantify and manage credit risk
on a portfolio basis as well as reduce the risk of a loss resulting from a
customer's failure to perform according to the terms of a transaction. To
achieve this objective, AMCORE strives to maintain a loan portfolio that is
diverse in terms of loan type, industry concentration, and borrower
concentration.
 
ALLOWANCE FOR LOAN AND LEASE LOSSES
 
     The allowance for loan and lease losses represents management's estimate of
what amount is necessary to provide for possible losses incurred in the loan
portfolio. In making this determination, management analyzes the ultimate
collectibility of the loan portfolio, incorporating feedback provided by lending
officers, the corporate loan review staff and examinations performed by
regulatory agencies. Management makes an ongoing evaluation as to the adequacy
of the allowance for loan losses. To establish the appropriate level of the
allowance, all loans, commitments to extend credit and standby letters of credit
are reviewed and classified as to potential loss exposure. An additional
allowance is maintained based upon the size, quality, and concentration
characteristics of the remaining loan portfolio, using both historical
quantitative trends and management's evaluation of qualitative factors including
future economic and industry outlooks.
 
                                       18
<PAGE>   19
 
     The determination by management of the appropriate level of the allowance
amounted to $19.9 million at December 31, 1997. However, since the allowance for
loan losses is based on estimates; ultimate losses may vary from the current
estimates. These estimates are reviewed regularly and as adjustments, become
necessary they are reported in earnings of that period. A detailed analysis of
the allowance for loan losses and the allocation of the allowance for loan
losses by category for the past five years is shown in Table 2.
 
     As of December 31, 1997, the allowance for loan losses as a percent of
total loans and non-performing loans was 1.01% and 100.20%, respectively. These
compare to the same ratios for the prior year of 1.07% and 156.84%. Net
charge-offs as a percent of average loans increased to 0.34% for 1997 versus
0.19% in 1996. Net charge-offs on satellite receivables represent 41.1% of total
net charge-offs, thus net charge-offs on all other loans as a percent of average
loans declined to 0.20%.
 
NON-PERFORMING ASSETS
 
     Non-performing assets consist of non-accrual loans, loans with restructured
terms and other real estate owned. Non-performing assets totaled $21.5 million
as of year-end 1997, an increase of $8.3 million or 62.9% from the $13.2 million
at year-end 1996. Total non-performing assets represent 0.59% of total assets at
December 31, 1997, compared to 0.40% at December 31, 1996.
 
     Loans are generally classified as non-accrual when there are reasonable
doubts as to the collectibility of principal and interest or when payment
becomes 90 days past due, except loans which are well secured and in the process
of payment. Any loans classified for regulatory purposes that have not been
included in non-performing loans are not expected to materially impact future
operating results, liquidity or capital. Interest collection on non-accrual
loans for which the ultimate collectibility of principal is uncertain are
applied as principal reductions. Otherwise, such collections are applied to
interest when received.
 
     Non-performing loans increased $7.6 million or 61.5% to total $19.9 million
at December 31, 1997 when compared to the prior year-end. This increase included
one large agricultural credit of $3.6 million. As of December 31, 1997,
non-performing loans to total loans were 1.01% compared to 0.68% at year-end
1996. Table 2 presents non-performing loans for each of the past five years.
 
     Loans 90 days or more past due were $3.4 million at December 31, 1997, a
decline of $306,000 from the prior year end. This decrease is primarily
attributable to the satellite dish receivable loans being transferred to held
for sale.
 
     Other real estate owned increased $748,000, or 81.3%, to $1.7 million at
December 31, 1997 when compared to year-end 1996.
 
CONCENTRATION OF CREDIT RISKS
 
     As previously discussed, AMCORE strives to maintain a diverse loan and
lease portfolio in an effort to minimize the effect of credit risk. Summarized
below are the characteristics of classifications which exceed 10 percent of
total loans.
 
     Commercial, financial, and agricultural loans were $632.4 million at
December 31, 1997, and comprised approximately 32.2% of gross loans, of which
1.65% were non-performing. Net charge-offs of commercial loans represent 0.13%
during 1997 and 0.04% during 1996 of the year-end balance of the category.
 
     Construction, commercial real estate loans, and loans for farmland were
$564.9 million at December 31, 1997, comprising 28.8% of gross loans, of which
0.79% were classified as non-performing. Net charge-offs of this category of
loans represents .04% of the year end balance during 1997 and 1996.
 
     Residential real estate loans, which includes home equity and permanent
residential financing, totaled $457.1 million at December 31, 1997, and
represent 23.3% of gross loans of which 0.78% are non-performing. Net
charge-offs of residential real estate loans represent 0.07% of the category
total in 1997 and .02% of the year-end balance in 1996.
 
                                       19
<PAGE>   20
 
     Installment and consumer loans were $305.5 million at December 31, 1997,
and comprised 15.6% of gross loans, of which 0.45% were non-performing. Net
charge-offs of consumer loans represented 1.67% and 0.89% of the year-end
category total for 1997 and 1996, respectively. Consumer loans are comprised of
direct loans, credit card loans, indirect auto loans, and consumer finance
company loans. Indirect auto loans total $180.5 million at December 31, 1997.
Both direct loans and indirect auto loans are approved and funded through a
centralized department utilizing the same credit scoring system to provide a
standard methodology for the extension of credit.
 
MARKET AND INTEREST RATE RISK MANAGEMENT
 
     AMCORE's asset and liability management process is utilized to manage
market and interest rate risk through structuring the balance sheet and
off-balance sheet portfolios to maximize net interest income while maintaining
acceptable levels of risk to changes in market interest rates. While achievement
of this goal requires a balance between profitability, liquidity and interest
rate risk, there are opportunities to enhance revenues through controlled risk.
 
     Interest rate sensitivity analysis is performed monthly using various
simulations with an asset/liability modeling system. These analyses, as well as
repricing gap reports, are reviewed by Asset and Liability Committees (ALCO) at
affiliate banks and at the corporate level, whose actions attempt to minimize
any negative impact interest rate movements may have on net interest income.
Each ALCO committee reviews the impact of liquidity, loan and deposit pricing
compared to its competition, capital adequacy and rate sensitivity, among other
things, and determines appropriate policy direction to maintain or meet
established ALCO guidelines.
 
     In periods of changing interest rates, net interest income is not only
impacted by the amounts of repricing assets and liabilities, but also impacted
by the rate at which repricings occur. Net interest income may also be impacted
by variances in prepayment of loans and securities. Table 6 and Footnote 5
summarize AMCORE's market risk and interest sensitivity position as of December
31, 1997.
 
     Management uses off-balance sheet derivative contracts to manage its
exposure to interest rate risk by modifying the existing interest rate risk
characteristics of on-balance sheet assets and liabilities. AMCORE does not have
any derivatives that are held or issued for trading purposes. The derivatives
utilized in the asset/liability management program predominately comprise
interest rate swap and floor contracts. The swap contracts are primarily
utilized to hedge the spread between deposit rates and earning assets with
floating rate characteristics. The floor contracts are utilized to provide
protection in the event of a decline in interest rates, and prepayment of
mortgage related assets.
 
     The swap contracts involve the exchange of fixed and floating interest rate
payments and are based on the notional amount of the contract. The floor
contracts are also based on the notional amount of the contract. These floor
contracts are purchased at a premium, which is amortized over the lives of the
contracts. The notional amount of the swap and floor contracts only identify the
size of the contracts and are used to calculate the interest payment amounts.
The only credit risk exposure AMCORE has is in relation to the counterparties
which all have high credit ratings. All counterparties were expected to meet any
outstanding interest payment obligations.
 
     The total notional amount of swap contracts outstanding was $270.0 million
and $145.0 million as of December 31, 1997 and 1996, respectively. As of the end
of 1997, these contracts had an aggregate negative fair value of $1,075,000. The
total notional amount of floor contracts outstanding was $145.0 million at
December 31,1997, with $50.0 million outstanding floor contracts as of the end
of 1996. These contracts had a net positive fair value of $183,000 as of the end
of 1997. For further discussion of derivative contracts, see Notes 5 and 11 to
the Consolidated Financial Statements.
 
CAPITAL MANAGEMENT
 
     Total stockholders' equity at December 31, 1997 was $287.5 million, an
increase of $30.1 million or 11.7%. Stockholders' equity includes an adjustment
to fair market value for securities classified as available for
 
                                       20
<PAGE>   21
 
sale. The fair market value of these securities increased $10.3 million during
1997. Without the impact of this increase, stockholders' equity would have
increased $19.7 million or 7.6%.
 
     AMCORE paid $12.1 million of cash dividends which represent $0.45 per share
or a dividend payout ratio of 42.1%. This compares to $0.38 per share paid in
1996 which represented a payout ratio of 31.7%. The book value per share
increased $1.04 per share to $10.68 at December 31, 1997 from $9.64 at December
31, 1996.
 
     As previously mentioned AMCORE issued $40 million of capital securities
through AMCORE Capital Trust I ("Trust"), a statutory business trust, of which
all common securities are owned by AMCORE. The capital securities qualify as
Tier I capital for regulatory capital purposes.
 
     AMCORE is considered a "well capitalized" institution based on regulatory
guidelines. AMCORE's leverage ratio of 8.31% at December 31, 1997 exceeds the
regulatory guidelines of 5% for well capitalized institutions. AMCORE's ratio of
tier 1 capital at 13.50% and total risk based capital at 14.38% significantly
exceed the regulatory minimums as the table below indicates as of December 31:
 
<TABLE>
<CAPTION>
                                                  DECEMBER 31, 1997         DECEMBER 31, 1996
                                                 -------------------       -------------------
                                                   AMOUNT      RATIO         AMOUNT      RATIO
                                                   ------      -----         ------      -----
                                                            (DOLLARS IN THOUSANDS)
<S>                                              <C>           <C>         <C>           <C>
Tier 1 Capital...............................    $  306,364    13.50%      $  246,250    12.09%
Tier Capital Minimum.........................        90,755     4.00%          81,459     4.00%
                                                 ----------    -----       ----------    -----
Amount in Excess of Regulatory Minimum           $  215,589     9.50%      $  164,791     8.09%
                                                 ==========    =====       ==========    =====
Total Capital................................    $  326,271    14.38%      $  265,565    13.04%
Total Capital Minimum........................       181,550     8.00%         162,917     8.00%
                                                 ----------    -----       ----------    -----
Amount in Excess of Regulatory Minimum.......    $  144,721     6.38%      $  102,648     5.04%
                                                 ==========    =====       ==========    =====
Risk Adjusted Assets                             $2,269,380                $2,036,468
                                                 ==========                ==========
</TABLE>
 
                                       21
<PAGE>   22
 
                                    TABLE 1
 
           ANALYSIS OF NET INTEREST INCOME AND AVERAGE BALANCE SHEET
<TABLE>
<CAPTION>
                                                       TWELVE MONTHS ENDED                  TWELVE MONTHS ENDED
                                                        DECEMBER 31, 1997                    DECEMBER 31, 1996
                                                 -------------------------------      -------------------------------
                                                  AVERAGE                AVERAGE       AVERAGE                AVERAGE
                                                  BALANCE     INTEREST    RATE         BALANCE     INTEREST    RATE
                                                  -------     --------   -------       -------     --------   -------
<S>                                              <C>          <C>        <C>          <C>          <C>        <C>
ASSETS
Interest-Earning Assets:
  Taxable securities...........................  $1,123,535   $ 77,076    6.86%       $  961,721   $ 62,780    6.53%
  Tax-exempt securities(1).....................     312,429     25,071    8.02           281,798     23,166    8.22
                                                 ----------   --------    ----        ----------   --------    ----
    Total Securities(2)........................   1,435,964    102,147    7.11         1,243,519     85,946    6.91
  Mortgage loans held for sale(3)..............      12,871        890    6.91             9,830        809    8.23
  Loans(1)(4)..................................   1,867,355    164,979    8.77         1,711,850    153,322    8.88
  Other earning assets.........................      10,156        538    5.22            19,332      1,545    7.86
  Fees on mortgage loans held for sale(3)......          --      2,187      --                --      1,870      --
                                                 ----------   --------    ----        ----------   --------    ----
    Total Interest-Earning Assets..............  $3,326,346   $270,741    8.10%       $2,984,531   $243,492    8.11%
  Non Interest-Earning Assets..................     193,883                              197,115
                                                 ----------                           ----------
         Total Assets..........................  $3,520,229                           $3,181,646
                                                 ==========                           ==========
LIABILITIES AND STOCKHOLDERS' EQUITY
Interest-Bearing Liabilities:
  Interest-bearing demand and savings
    deposits...................................  $  727,184   $ 20,170    2.77%       $  717,878   $ 18,407    2.56%
  Time deposits................................   1,374,796     80,905    5.88         1,275,457     74,790    5.86
                                                 ----------   --------    ----        ----------   --------    ----
    Total interest-bearing deposits............   2,101,980    101,075    4.81         1,993,335     93,197    4.66
  Short-term borrowings........................     677,205     38,998    5.69           468,894     26,044    5.47
  Long-term borrowings.........................     132,533      8,887    6.71           159,504      9,661    6.06
                                                 ----------   --------    ----        ----------   --------    ----
    Total Interest-Bearing Liabilities.........  $2,911,718   $148,960    5.10%       $2,621,733   $128,902    4.89%
Non Interest Bearing Liabilities:
  Demand deposits..............................     297,443                              280,856
  Other liabilities............................      42,072                               36,400
                                                 ----------                           ----------
         Total Liabilities.....................  $3,251,233                           $2,938,989
Stockholders' Equity                                268,996                              242,657
                                                 ----------                           ----------
         Total Liabilities and Stockholders'
           Equity..............................  $3,520,229                           $3,181,646
                                                 ==========                           ==========
Net Interest Income (FTE)......................               $121,781                             $114,590
                                                              ========                             ========
Net Interest Spread (FTE)......................                           3.00%                                3.22%
                                                                          ====                                 ====
Interest Rate Margin (FTE).....................                           3.64%                                3.81%
                                                                          ====                                 ====
 
<CAPTION>
                                                       TWELVE MONTHS ENDED
                                                        DECEMBER 31, 1995
                                                 -------------------------------
                                                  AVERAGE                AVERAGE
                                                  BALANCE     INTEREST    RATE
                                                  -------     --------   -------
<S>                                              <C>          <C>        <C>
ASSETS
Interest-Earning Assets:
  Taxable securities...........................  $  662,260   $ 44,242    6.68%
  Tax-exempt securities(1).....................     251,485     19,699    7.83
                                                 ----------   --------    ----
    Total Securities(2)........................     913,745     63,941    7.00
  Mortgage loans held for sale(3)..............      11,478        941    8.20
  Loans(1)(4)..................................   1,557,375    141,019    8.91
  Other earning assets.........................      16,441        953    5.70
  Fees on mortgage loans held for sale(3)......          --      2,076      --
                                                 ----------   --------    ----
    Total Interest-Earning Assets..............  $2,499,039   $208,930    8.27%
  Non Interest-Earning Assets..................     216,481
                                                 ----------
         Total Assets..........................  $2,715,520
                                                 ==========
LIABILITIES AND STOCKHOLDERS' EQUITY
Interest-Bearing Liabilities:
  Interest-bearing demand and savings
    deposits...................................  $  710,232   $ 19,182    2.70%
  Time deposits................................   1,182,916     67,105    5.67
                                                 ----------   --------    ----
    Total interest-bearing deposits............   1,893,148     86,287    4.55
  Short-term borrowings........................     245,277     15,397    6.26
  Long-term borrowings.........................      34,367      2,333    6.79
                                                 ----------   --------    ----
    Total Interest-Bearing Liabilities.........  $2,172,792   $104,017    4.77%
Non Interest Bearing Liabilities:
  Demand deposits..............................     289,179
  Other liabilities............................      37,544
                                                 ----------
         Total Liabilities.....................  $2,499,515
Stockholders' Equity                                224,219
                                                 ----------
         Total Liabilities and Stockholders'
           Equity..............................  $2,715,520
                                                 ==========
Net Interest Income (FTE)......................               $104,913
                                                              ========
Net Interest Spread (FTE)......................                           3.49%
                                                                          ====
Interest Rate Margin (FTE).....................                           4.12%
                                                                          ====
</TABLE>
 
                                       22
<PAGE>   23
 
<TABLE>
<CAPTION>
                                              TWELVE MONTHS ENDED                                TWELVE MONTHS ENDED
                                      DECEMBER 31, 1997/DECEMBER 31, 1996                DECEMBER 31, 1996/DECEMBER 31, 1995
                                  --------------------------------------------       --------------------------------------------
                                     INCREASE          DUE TO       TOTAL NET           INCREASE          DUE TO       TOTAL NET
                                    (DECREASE)       CHANGE IN       INCREASE          (DECREASE)       CHANGE IN       INCREASE
                                  AVERAGE VOLUME    AVERAGE RATE    (DECREASE)       AVERAGE VOLUME    AVERAGE RATE    (DECREASE)
                                  --------------    ------------    ----------       --------------    ------------    ----------
                                                                          (IN THOUSANDS)
<S>                               <C>               <C>             <C>              <C>               <C>             <C>
Interest Income:
  Taxable securities............     $11,542          $ 2,754        $14,296            $19,570          $(1,032)       $18,538
  Tax-exempt securities(1)......       2,478             (573)         1,905              2,458            1,009          3,467
                                     -------          -------        -------            -------          -------        -------
    Total Securities(2).........      14,020            2,181         16,201             22,028              (23)        22,005
  Mortgage loans held for
    sale........................         224             (143)            81               (136)               4           (132)
  Loans(1)(4)...................      13,587           (1,930)        11,657             13,843           (1,540)        12,303
  Other earning assets..........        (587)            (420)        (1,007)               187              405            592
  Fees on mortgage loans held
    for sale(3).................          33              284            317                 35             (241)          (206)
                                     -------          -------        -------            -------          -------        -------
         Total Interest-Earning
           Assets...............     $28,086          $  (837)       $27,249            $39,897          $(5,335)       $34,562
                                     =======          =======        =======            =======          =======        =======
Interest Expense:
  Interest-bearing demand and
    savings deposits............     $   242          $ 1,521        $ 1,763            $   205          $  (980)       $  (775)
  Time deposits.................       5,845              270          6,115              5,374            2,311          7,685
                                     -------          -------        -------            -------          -------        -------
    Total interest-bearing
       deposits.................       5,238            2,640          7,878              4,703            2,207          6,910
  Short-term borrowings.........      11,968              986         12,954             12,601           (1,954)        10,647
  Long-term borrowings..........      (1,741)             967           (774)             7,606             (278)         7,328
                                     -------          -------        -------            -------          -------        -------
         Total Interest-Bearing
           Liabilities..........     $15,465          $ 4,593        $20,058            $24,940          $   (55)       $24,885
                                     =======          =======        =======            =======          =======        =======
Net Interest Margin/Net Interest
  Income (FTE)..................     $12,621          $(5,430)       $ 7,191            $14,957          $(5,280)       $ 9,677
                                     =======          =======        =======            =======          =======        =======
</TABLE>
 
     The above table shows the changes in interest income (tax equivalent) and
interest expense attributable to volume and rate variances. The change in
interest income (tax equivalent) due to both volume and rate has been allocated
to volume and rate changes in proportion to the relationship of the absolute
dollar amounts of the change in each.
- ---------------
(1) The interest on tax-exempt investment securities and tax-exempt loans is
    calculated on a tax equivalent basis assuming a federal tax rate of 35%.
 
(2) The average balance has been adjusted to exclude the effect of Statement of
    Financial Accounting Standards No. 115.
 
(3) The yield-related fees recognized from the origination of mortgage loans
    held for sale are in addition to the interest earned on the loans during the
    period in which they are warehoused for sale as shown above.
 
(4) The balances of nonaccrual loans are included in average loans outstanding.
    Interest on loans includes yield related loan fees.
 
                                       23
<PAGE>   24
 
                                    TABLE 2
 
            ANALYSIS OF LOAN AND LEASE PORTFOLIO AND LOSS EXPERIENCE
 
<TABLE>
<CAPTION>
                                                       1997         1996         1995         1994         1993
                                                       ----         ----         ----         ----         ----
                                                                            (IN THOUSANDS)
<S>                                                 <C>          <C>          <C>          <C>          <C>
Commercial, financial and agricultural............  $  632,378   $  568,451   $  487,738   $  450,246   $  414,696
Real estate.......................................     961,361      847,993      806,192      714,881      607,966
Real estate-construction..........................      60,624       53,039       44,134       34,265       19,385
Installment and consumer..........................     305,491      336,741      285,450      290,710      293,500
Direct lease financing............................       3,194        2,066        1,117          760        1,211
                                                    ----------   ----------   ----------   ----------   ----------
  Gross Loans.....................................  $1,963,048   $1,808,290   $1,624,631   $1,490,862   $1,336,758
  Unearned income.................................        (374)      (1,169)      (4,266)      (9,365)     (16,554)
                                                    ----------   ----------   ----------   ----------   ----------
  Loans, net of unearned income...................  $1,962,674   $1,807,121   $1,620,365   $1,481,497   $1,320,204
                                                    ----------   ----------   ----------   ----------   ----------
  Allowance for loan and lease losses.............     (19,908)     (19,295)     (17,107)     (17,246)     (17,870)
                                                    ----------   ----------   ----------   ----------   ----------
NET LOANS.........................................  $1,942,766   $1,787,826   $1,603,258   $1,464,251   $1,302,334
                                                    ==========   ==========   ==========   ==========   ==========
SUMMARY OF LOAN LOSS EXPERIENCE:
Allowance for loan and lease losses, beginning....  $   19,295   $   17,107   $   17,246   $   17,870   $   17,286
Amounts charged-off:
  Commercial, financial and agricultural..........       1,202          537        1,204        1,231        1,492
  Real estate.....................................         555          273        1,030          283          278
  Installment and consumer........................       6,020        3,831        2,329        2,146        1,698
  Direct lease financing..........................          --           --           --           --           --
                                                    ----------   ----------   ----------   ----------   ----------
    Total Charge-offs.............................  $    7,777   $    4,641   $    4,563   $    3,660   $    3,468
                                                    ----------   ----------   ----------   ----------   ----------
Recoveries on amounts previously charged off:
  Commercial, financial and agricultural..........         356          301          533          543          476
  Real estate.....................................          63          281           15           60          154
  Installment and consumer........................         926          819          711          682          660
  Direct lease financing..........................          --           --           --           --           --
                                                    ----------   ----------   ----------   ----------   ----------
    Total Recoveries..............................  $    1,345   $    1,401   $    1,259   $    1,285   $    1,290
                                                    ==========   ==========   ==========   ==========   ==========
         Net Charge-offs..........................  $    6,432   $    3,240   $    3,304   $    2,375   $    2,178
Provision charged to expense......................       7,045        5,428        3,165        1,751        2,762
                                                    ----------   ----------   ----------   ----------   ----------
    ALLOWANCE FOR LOAN AND LEASE LOSSES, ENDING...  $   19,908   $   19,295   $   17,107   $   17,246   $   17,870
                                                    ==========   ==========   ==========   ==========   ==========
NON-PERFORMING LOANS AT YEAR-END:
Non-accrual.......................................  $   19,491   $   12,019   $   11,410   $   11,262   $   12,350
Restructured......................................         377          283        2,491        2,296        1,371
                                                    ----------   ----------   ----------   ----------   ----------
    TOTAL NON-PERFORMING LOANS....................  $   19,868   $   12,302   $   13,901   $   13,558   $   13,721
                                                    ==========   ==========   ==========   ==========   ==========
Past due 90 days or more not included above.......  $    3,386   $    3,692   $    1,534        1,088        1,932
                                                    ==========   ==========   ==========   ==========   ==========
RATIOS:
Allowance for loan and lease losses to year-end
  loans...........................................        1.01%        1.07%        1.06%        1.16%        1.35%
Allowance to non-performing loans.................      100.20%      156.84%      123.06%      127.20%      130.24%
Net charge-offs to average loans..................        0.34%        0.19%        0.21%        0.17%        0.10%
Recoveries to charge-offs.........................       17.29%       30.19%       27.59%       35.11%       37.20%
Non-performing loans to loans, net of unearned
  income..........................................        1.01%        0.68%        0.86%        0.92%        1.04%
</TABLE>
 
     The allocation of the allowance for loan and lease losses at December 31,
1997, 1996, 1995, 1994, and 1993 was as follows:
<TABLE>
<CAPTION>
                               1997                   1996                   1995                   1994            1993
                       --------------------   --------------------   --------------------   --------------------   -------
                                  PERCENT                PERCENT                PERCENT                PERCENT
                                     OF                     OF                     OF                     OF
                                  LOANS IN               LOANS IN               LOANS IN               LOANS IN
                       AMOUNT     CATEGORY    AMOUNT     CATEGORY    AMOUNT     CATEGORY    AMOUNT     CATEGORY    AMOUNT
                       ------     --------    ------     --------    ------     --------    ------     --------    ------
<S>                    <C>       <C>          <C>       <C>          <C>       <C>          <C>       <C>          <C>
Commercial, financial
  and agricultural...  $ 5,617      32.4      $ 5,293      31.5      $ 5,888      30.0      $ 4,912      30.2      $ 5,737
Real estate..........    1,697      52.1        2,307      49.9        2,079      52.4        2,214      50.3        1,513
Installment and
  consumer...........    4,207      15.5        4,019      18.6        3,075      17.6        3,275      19.5        2,939
Impaired loans.......    2,311         *        1,496         *        1,185         *            *         *            *
Unallocated..........    6,076         *        6,180         *        4,880         *        6,845         *        7,681
                       -------     -----      -------     -----      -------     -----      -------     -----      -------
    TOTAL............  $19,908     100.0      $19,295     100.0      $17,107     100.0      $17,246     100.0      $17,870
                       =======     =====      =======     =====      =======     =====      =======     =====      =======
 
<CAPTION>
                          1993
                       ----------
                        PERCENT
                           OF
                        LOANS IN
                        CATEGORY
                        --------
<S>                    <C>
Commercial, financial
  and agricultural...     31.0
Real estate..........     47.0
Installment and
  consumer...........     22.0
Impaired loans.......        *
Unallocated..........        *
                         -----
    TOTAL............    100.0
                         =====
</TABLE>
 
- ---------------
*Not applicable
 
                                       24
<PAGE>   25
 
                                    TABLE 3
 
                   MATURITY AND INTEREST SENSITIVITY OF LOANS
 
<TABLE>
<CAPTION>
                                                                DECEMBER 31, 1997
                                      ---------------------------------------------------------------------
                                                                                         LOANS DUE AFTER
                                         TIME REMAINING TO MATURITY                          ONE YEAR
                                      ---------------------------------                --------------------
                                                      ONE        AFTER                  FIXED      FLOATING
                                      DUE WITHIN    TO FIVE      FIVE                  INTEREST    INTEREST
                                       ONE YEAR      YEARS       YEARS      TOTAL        RATE        RATE
                                      ----------    -------      -----      -----      --------    --------
                                                                 (IN THOUSANDS)
<S>                                   <C>           <C>         <C>        <C>         <C>         <C>
Commercial, financial and
  agricultural......................   $337,974     $255,129    $39,275    $632,378    $215,778    $78,626
Real estate-construction............     30,616       29,403        605      60,624      22,882      7,126
                                       --------     --------    -------    --------    --------    -------
     TOTAL..........................   $368,590     $284,532    $39,880    $693,002    $238,660    $85,752
                                       ========     ========    =======    ========    ========    =======
</TABLE>
 
                                    TABLE 4
 
                             MATURITY OF SECURITIES
 
<TABLE>
<CAPTION>
                                                                       DECEMBER 31, 1997
                               --------------------------------------------------------------------------------------------------
                                                         U.S.             STATES AND          CORPORATE
                                                      GOVERNMENT          POLITICAL          OBLIGATIONS
                                U.S. TREASURY          AGENCIES        SUBDIVISIONS(1)        AND OTHER              TOTAL
                               ----------------    ----------------    ----------------    ----------------    ------------------
                                AMOUNT    YIELD     AMOUNT    YIELD     AMOUNT    YIELD     AMOUNT    YIELD      AMOUNT     YIELD
                                ------    -----     ------    -----     ------    -----     ------    -----      ------     -----
                                                                         (IN THOUSANDS)
<S>                            <C>        <C>      <C>        <C>      <C>        <C>      <C>        <C>      <C>          <C>
Securities Available for
  Sale(3):
  One year or less...........  $ 47,198   5.55%    $ 50,618   6.88%      17,932   8.69%    $ 34,516   5.77%    $  150,264    6.42%
  After one through five
    years....................    57,686   6.30       50,720   6.30       77,535   7.78        4,414   6.73        190,355    6.91
  After five through ten
    years....................        --     --      142,977   6.78      101,660   7.94           --     --        244,637    7.25
  After ten years............        --     --       23,486   6.89      128,781   8.32       24,577   6.60        176,844    7.88
  Mortgage-backed
    securities(2)............        --     --      589,988   7.85           --     --       89,505   7.23        679,493    7.77
                               --------   ----     --------   ----     --------   -----    --------   ----     ----------   -----
      Total Securities
        Available for Sale...  $104,884   5.96%    $857,789   7.49%    $325,908   8.09%    $153,012   6.79%    $1,441,593    7.44%
                               --------   ----     --------   ----     --------   -----    --------   ----     ----------   -----
Securities Held to Maturity:
  One year or less...........  $    750   6.09%          --     --     $  1,787   7.61%    $     --     --     $    2,537    7.16%
  After one through five
    years....................       804   6.02           --     --       10,009   7.25            1   7.37%        10,814    7.16
  After five through ten
    years....................        --     --           --     --        1,920   8.14           --     --          1,920    8.14
  After ten years............        --     --           --     --          150   10.23           2     --            152   10.10
                               --------   ----     --------   ----     --------   -----    --------   ----     ----------   -----
      Total Securities Held
        to Maturity..........  $  1,554   6.06%          --     --     $ 13,866   7.45%    $      3   2.73%    $   15,423    7.31%
                               --------   ----     --------   ----     --------   -----    --------   ----     ----------   -----
      Total Securities.......  $106,438   5.96%    $857,789   7.49%    $339,774   8.07%    $153,015   6.79%    $1,457,016    7.44%
                               ========   ====     ========   ====     ========   =====    ========   ====     ==========   =====
</TABLE>
 
- ---------------
(1) Yields were calculated on a tax equivalent basis assuming a federal tax rate
    of 35%.
 
(2) Mortgage-backed security maturities may differ from contractual maturities
    because the underlying mortgages may be called or prepaid without any
    penalties. Therefore, these securities are not included within the maturity
    categories above.
 
(3) Yields were calculated excluding the effects of FAS No. 115.
 
                                    TABLE 5
 
                   MATURITY OF TIME DEPOSITS $100,000 OR MORE
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31, 1997
                                       ------------------------------------------------------------------------
                                                              TIME REMAINING TO MATURITY
                                       ------------------------------------------------------------------------
                                        DUE WITHIN      THREE TO        SIX TO            AFTER
                                       THREE MONTHS    SIX MONTHS    TWELVE MONTHS    TWELVE MONTHS     TOTAL
                                       ------------    ----------    -------------    -------------     -----
                                                                    (IN THOUSANDS)
<S>                                    <C>             <C>           <C>              <C>              <C>
Certificates of deposit..............    $ 98,835       $90,957        $108,117         $199,011       $496,920
Other time deposits..................      12,929           100             300              838         14,167
                                         --------       -------        --------         --------       --------
          TOTAL......................    $111,764       $91,057        $108,417         $199,849       $511,087
                                         ========       =======        ========         ========       ========
</TABLE>
 
                                       25
<PAGE>   26
 
                                    TABLE 6
                           INTEREST RATE SENSITIVITY
 
     The following table provides information about the Company's derivative
financial instruments and other financial instruments used for purposes other
than trading that are sensitive to changes in interest rates. For loans,
securities, and liabilities with contractual maturities, the table presents
principal cash flows and related weighted-average interest rates by contractual
maturities as well as the Company's historical experience of the impact of
interest-rate fluctuations on the pre-payment of residential and home equity
loans and mortgage-backed securities.
 
     For core deposits (DDA, interest checking, savings, and money market
deposits) that have no contractual maturity, the table presents principal cash
flows and, as applicable, related weighted-average interest rates based on the
Company's historical experience, management's judgment, and statistical
analysis, as applicable, concerning their most likely withdrawal behaviors.
 
     For interest rate swaps, caps and floors, the table presents notional
amounts and, if applicable, weighted-average interest rates by contractual
maturity date or call date. Notional amounts are used to calculate the
contractual payments to be exchanged under the contracts.
 
     Weighted-average variable rates are based on the implied forward rates in
the yield curve at the reporting date. See Note 5 for the fair value of the
financial instruments.
 
<TABLE>
<CAPTION>
                                                                                                          THERE-
                                     1998          1999          2000          2001          2002         AFTER          TOTAL
                                     ----          ----          ----          ----          ----         ------         -----
                                                                       (DOLLARS IN THOUSANDS)
<S>                                <C>           <C>           <C>           <C>           <C>           <C>           <C>
RATE SENSITIVE ASSETS:
Fixed Interest Rate Loans........  $434,967      $307,976      $255,384      $114,198      $121,098      $ 92,702      $1,326,324
  Average Interest Rate..........      8.76%         8.60%         8.68%         8.54%         8.61%         8.08%           8.63%
Variable Interest Rate Loans.....   338,456        76,069        64,133        46,503        55,429        55,762         636,350
  Average Interest Rate..........      9.02%         8.48%         8.45%         8.53%         8.26%         8.79%           8.77%
Fixed Interest Rate Securities...   319,217       165,616       150,868       118,303        92,543       531,512       1,378,060
  Average Interest Rate..........      6.75%         6.92%         6.78%         6.72%         6.65%         6.47%           6.66%
Variable Interest Rate
  Securities.....................    28,564         3,488         3,934         3,824         4,341        34,805          78,956
  Average Interest Rate..........      7.21%         7.80%         7.64%         7.58%         7.46%         7.44%           7.39%
Other Interest-Bearing Assets....     2,839            --            --            --            --            --           2,839
  Average Interest Rate..........      5.73%           --            --            --            --            --            5.73%
RATE SENSITIVE LIABILITIES:
Non-Interest-bearing checking....  $111,194      $     --      $140,039      $     --      $ 74,561      $ 18,800      $  344,594
  Average Interest Rate..........        --            --            --            --            --            --              --
Savings & Interest-bearing
  checking.......................   216,095            --       374,513            --        75,817        75,817         742,242
  Average Interest Rate..........      3.66%           --          2.78%           --          1.93%         1.93%           2.84%
Time-deposits....................   809,088       422,164       138,527        13,321        17,021        40,087       1,440,207
  Average Interest Rate..........      5.70%         6.05%         6.33%         6.01%         6.11%         6.96%           5.91%
Fixed Interest Rate Borrowings...   356,830        91,272        87,501           530        55,003        43,145         634,281
  Average Interest Rate..........      5.89%         6.01%         5.83%         7.78%         5.26%         9.15%           6.07%
Variable Interest Rate
  Borrowings.....................   124,352        48,000            --            --            --            --         172,353
  Average Interest Rate..........      5.87%         5.86%           --            --            --            --            5.86%
RATE SENSITIVE DERIVATIVES:
Pay variable/received fixed
  swap...........................  $     --      $ 40,000      $     --      $     --      $     --      $     --      $   40,000
  Average pay rate...............        --          5.64%           --            --            --            --            5.64%
  Average receive rate...........        --          6.97%           --            --            --            --            6.97%
Pay fixed/received variable......    50,000        30,000        25,000       125,000            --            --         230,000
  Average pay rate...............      5.96%         5.80%         8.52%         7.51%           --            --            7.06%
  Average receive rate...........      5.74%         6.18%         8.50%         7.72%           --            --            7.17%
Interest rate caps...............        --        25,000        15,000        25,000        10,000            --          75,000
  Average strike rate............        --          6.31%         6.31%         6.31%         6.31%           --            6.31%
  Forward rate...................        --          5.98%         6.04%         6.07%         6.11%           --            6.04%
Interest rate floors.............        --        50,000        40,000        25,000        30,000            --         145,000
  Average strike rate............        --          5.43%         5.13%         5.61%         5.20%           --            5.33%
  Forward rate...................        --          5.98%         6.04%         6.07%         6.11%           --            6.04%
</TABLE>
 
                                       26
<PAGE>   27
 
              ITEM 8. FINANCIAL STATEMENTS AND SUPPLEMENTARY DATA
 
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
                       CONSOLIDATED FINANCIAL STATEMENTS
 
                          CONSOLIDATED BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                   AS OF DECEMBER 31,
                                                                ------------------------
                                                                   1997          1996
                                                                   ----          ----
                                                                     (IN THOUSANDS,
                                                                   EXCEPT SHARE DATA)
<S>                                                             <C>           <C>
ASSETS
Cash and cash equivalents...................................    $  105,218    $  105,347
Interest earning deposits in banks..........................         2,206           833
Federal funds sold and other short-term investments.........           633        26,261
Loans held for sale.........................................        29,869        11,730
Securities available for sale...............................     1,441,593     1,213,957
Securities held to maturity (fair value $15,611 in 1997;
  $55,242 of in 1996).......................................        15,423        54,548
                                                                ----------    ----------
          Total securities..................................    $1,457,016    $1,268,505
Loans and leases, net of unearned income....................     1,962,674     1,807,121
Allowance for loan and lease losses.........................       (19,908)      (19,295)
                                                                ----------    ----------
          Net loans and leases..............................    $1,942,766    $1,787,826
Premises and equipment, net.................................        54,774        56,567
Intangible assets, net......................................        12,168        13,881
Other real estate owned.....................................         1,668           920
Other assets................................................        61,372        60,125
                                                                ----------    ----------
          TOTAL ASSETS......................................    $3,667,690    $3,331,995
                                                                ==========    ==========
 
LIABILITIES
Deposits:
  Demand deposits...........................................    $  915,954    $  841,085
  Savings deposits..........................................       170,882       192,608
  Other time deposits.......................................     1,440,207     1,317,797
                                                                ----------    ----------
          Total deposits....................................    $2,527,043    $2,351,490
Short-term borrowings.......................................       647,509       549,081
Long-term borrowings........................................       159,125       131,612
Other liabilities...........................................        46,537        42,392
                                                                ----------    ----------
          TOTAL LIABILITIES.................................    $3,380,214    $3,074,575
                                                                ----------    ----------
STOCKHOLDERS' EQUITY
Preferred stock, $1 par value: authorized 10,000,000 shares;
  issued none...............................................    $       --    $       --
Common stock, $.22 par value: authorized 45,000,000 shares;
</TABLE>
 
<TABLE>
<CAPTION>
                        1997             1996
                        ----             ----
<S>                  <C>              <C>        <C>            <C>          <C>
  Issued             27,681,138       27,627,740
  Outstanding        26,922,604       26,706,883 ...........         6,152        6,134
Additional paid-in capital..................................        73,262       68,047
Retained earnings...........................................       206,235      191,485
Deferred Compensation Non-Employee Directors................        (1,478)      (1,382)
Treasury stock..............................................        (5,069)      (4,908)
Net unrealized gain (loss) on securities available for sale,
  net of taxes..............................................         8,374       (1,956)
                                                                ----------   ----------
          TOTAL STOCKHOLDERS' EQUITY........................    $  287,476   $  257,420
                                                                ----------   ----------
          TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY........    $3,667,690   $3,331,995
                                                                ==========   ==========
</TABLE>
 
          See accompanying notes to consolidated financial statements.
                                       27
<PAGE>   28
 
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
                       CONSOLIDATED STATEMENTS OF INCOME
 
<TABLE>
<CAPTION>
                                                                       YEARS ENDED DECEMBER 31,
                                                                --------------------------------------
                                                                   1997          1996          1995
                                                                   ----          ----          ----
                                                                (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                                                             <C>           <C>           <C>
INTEREST INCOME
Interest and fees on loans and leases.......................     $164,520      $152,974      $140,810
Interest on securities:
  Taxable...................................................       77,076        62,780        44,242
  Tax-exempt................................................       16,296        15,058        13,246
                                                                 --------      --------      --------
          Total Income from Securities......................     $ 93,372      $ 77,838      $ 57,488
Interest on federal funds sold and other short-term
  investments...............................................          448         1,477           921
Interest and fees on mortgage loans held for sale...........        3,077         2,679         3,017
Interest on deposits in banks...............................           90            68            32
                                                                 --------      --------      --------
          TOTAL INTEREST INCOME.............................     $261,507      $235,036      $202,268
INTEREST EXPENSE
Interest on deposits........................................     $101,075      $ 93,197      $ 86,287
Interest on short-term borrowings...........................       38,998        26,044        15,397
Interest on long-term borrowings............................        8,887         9,661         2,333
                                                                 --------      --------      --------
          TOTAL INTEREST EXPENSE............................     $148,960      $128,902      $104,017
                                                                 --------      --------      --------
          NET INTEREST INCOME...............................     $112,547      $106,134      $ 98,251
Provision for loan and lease losses.........................        7,045         5,428         3,165
                                                                 --------      --------      --------
NET INTEREST INCOME AFTER PROVISION FOR LOAN AND LEASE
  LOSSES....................................................     $105,502      $100,706      $ 95,086
NON-INTEREST INCOME
Trust and asset management income...........................     $ 16,451      $ 14,100      $ 12,331
Service charges on deposits.................................        7,837         7,686         7,756
Mortgage revenues...........................................        4,340         4,649         3,584
Insurance revenues..........................................        2,239         2,224         1,188
Collection fee income.......................................        2,105         2,145         1,831
Other.......................................................       10,538         9,595         7,886
                                                                 --------      --------      --------
          TOTAL NON-INTEREST INCOME, EXCLUDING NET REALIZED
            SECURITY GAINS..................................     $ 43,510      $ 40,399      $ 34,576
Net realized security gains.................................        4,198         1,871         2,298
                                                                 --------      --------      --------
          TOTAL NON-INTEREST INCOME.........................     $ 47,708      $ 42,270      $ 36,874
OPERATING EXPENSES
Compensation expense........................................     $ 47,199      $ 43,715      $ 43,050
Employee benefits...........................................       11,659        12,346        10,765
Net occupancy expense.......................................        6,490         6,596         6,060
Equipment expense...........................................        8,735         8,454         9,284
Professional fees...........................................        6,366         3,150         3,408
Advertising and business development........................        2,827         2,662         2,718
Amortization of intangible assets...........................        2,212         2,219         2,629
Impairment of long-lived assets.............................        2,081            --         3,269
Fair value adjustment on loans held for sale................        4,955            --            --
Other.......................................................       23,104        19,797        20,547
                                                                 --------      --------      --------
          TOTAL OPERATING EXPENSES..........................     $115,628      $ 98,939      $101,730
                                                                 --------      --------      --------
INCOME BEFORE INCOME TAXES..................................     $ 37,582      $ 44,037      $ 30,230
Income taxes................................................        8,918        12,161         7,205
                                                                 --------      --------      --------
NET INCOME..................................................     $ 28,664      $ 31,876      $ 23,025
                                                                 ========      ========      ========
BASIC EARNINGS PER COMMON SHARE.............................     $   1.07      $   1.20      $   0.87
DILUTED EARNINGS PER COMMON SHARE...........................         1.05          1.18          0.86
DIVIDENDS PER COMMON SHARE..................................         0.45          0.38          0.33
AVERAGE COMMON SHARES OUTSTANDING...........................       26,862        26,649        26,504
</TABLE>
 
          See accompanying notes to consolidated financial statements.
                                       28
<PAGE>   29
 
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
                CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY
 
<TABLE>
<CAPTION>
                                                                           DEFERRED                NET UNREALIZED
                                                 ADDITIONAL              COMPENSATION               GAIN (LOSS)         TOTAL
                                        COMMON    PAID-IN     RETAINED   NON-EMPLOYEE   TREASURY   ON SECURITIES    STOCKHOLDERS'
                                        STOCK     CAPITAL     EARNINGS    DIRECTORS      STOCK         AFS(1)          EQUITY
                                        ------   ----------   --------   ------------   --------   --------------   -------------
                                                                    (IN THOUSANDS, EXCEPT SHARE DATA)
<S>                                     <C>      <C>          <C>        <C>            <C>        <C>              <C>
Balance at December 31, 1994..........  $6,127    $67,473     $156,042     $  (926)     $(8,422)      $(7,699)        $212,595
  Net Income..........................     --          --       23,025          --           --            --           23,025
  Cash dividends on common stock--$.33
    per share.........................     --          --       (8,750)         --           --            --           (8,750)
  Transfer from retained earnings to
    additional paid-in-capital........     --         667         (667)         --           --            --               --
  Purchase of 38,590 shares for the
    treasury..........................     --          --           --          --         (256)           --             (256)
  Reissuance of 54,933 treasury shares
    for Non-Employee Directors stock
    plan..............................     --         120           --        (661)         541            --               --
  Deferred compensation expense.......     --         (72)          --         280           --            --              208
  Reissuance of 58,461 treasury shares
    for employee incentive plan.......     --           3           --          --          240            --              243
  Reissuance of 146,822 treasury
    shares under incentive stock
    option plans......................     --        (241)          (2)         --        1,477            --            1,234
  Net change in unrealized gains
    (losses) on securities available
    for sale, net of tax..............     --          --           --          --           --        13,825           13,825
                                        ------    -------     --------     -------      -------       -------         --------
Balance at December 31, 1995..........  $6,127    $67,950     $169,648     $(1,307)     $(6,420)      $ 6,126         $242,124
                                        ------    -------     --------     -------      -------       -------         --------
  Net Income..........................     --          --       31,876          --           --            --           31,876
  Cash dividends on common stock--$.38
    per share.........................     --          --      (10,039)         --           --            --          (10,039)
  Reissuance of 39,556 treasury shares
    for Non-Employee Directors stock
    plan..............................     --         205           --        (542)         337            --               --
  Deferred compensation expense.......     --        (331)          --         467           --            --              136
  Reissuance of 61,436 treasury shares
    for employee incentive plan.......     --         (30)          --          --          401            --              371
  Issuance of 31,159 common shares for
    employee incentive plan...........      7         183           --          --           --            --              190
  Reissuance of 98,135 treasury shares
    under incentive stock option
    plans.............................     --          70           --          --          774            --              844
  Net change in unrealized gains
    (losses) on securities available
    for sale, net of tax..............     --          --           --          --           --        (8,082)          (8,082)
                                        ------    -------     --------     -------      -------       -------         --------
Balance at December 31, 1996..........  $6,134    $68,047     $191,485     $(1,382)     $(4,908)      $(1,956)        $257,420
                                        ------    -------     --------     -------      -------       -------         --------
  Net Income..........................     --          --       28,664          --           --            --           28,664
  Cash dividends on common stock--$.45
    per share.........................     --          --      (12,130)         --           --            --          (12,130)
  Purchase of AMCORE Bank Belleville
    minority interest.................     --       1,768       (1,784)                                                    (16)
  Purchase of 53,000 shares for the
    treasury..........................     --          --           --          --       (1,327)           --           (1,327)
  Three-for-two stock split fractional
    share payments....................     --         (18)          --          --           --            --              (18)
  Reissuance of 18,486 treasury shares
    for Non-Employee Directors stock
    plan..............................     --         244           --        (356)         112            --               --
  Issuance of 16,377 common shares for
    directors stock plan..............      4         106           --        (110)                                         --
  Deferred compensation expense.......     --          --           --         370           --            --              370
  Reissuance of 264,600 treasury
    shares under incentive stock
    option plans......................     --       2,678           --          --        1,035            --            3,713
  Reissuance of 2,457 treasury shares
    for employee incentive plans......     --          21           --          --           19            --               40
  Issuance of 63,743 common shares for
    employee incentive plan...........     14         416           --          --           --            --              430
  Net change in unrealized gains
    (losses) on securities available
    for sale, net of tax..............     --          --           --          --           --        10,330           10,330
                                        ------    -------     --------     -------      -------       -------         --------
Balance at December 31, 1997..........  $6,152    $73,262     $206,235     $(1,478)     $(5,069)      $ 8,374         $287,476
                                        ======    =======     ========     =======      =======       =======         ========
</TABLE>
 
- ---------------
(1) Net unrealized gain (loss) on AFS (securities available for sale), net of
taxes.
 
          See accompanying notes to consolidated financial statements.
                                       29
<PAGE>   30
 
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
                     CONSOLIDATED STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                     YEARS ENDED DECEMBER 31,
                                                              ---------------------------------------
                                                                1997           1996           1995
                                                                ----           ----           ----
                                                                          (IN THOUSANDS)
<S>                                                           <C>            <C>            <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net income..................................................  $  28,664      $  31,876      $  23,025
Adjustments to reconcile net income to net cash provided by
  operating activities:
  Depreciation and amortization of premises and equipment...      5,391          6,100          6,245
  Amortization and accretion of securities, net.............      2,081          3,397            791
  Provision for loan and lease losses.......................      7,045          5,428          3,165
  Amortization of intangible assets.........................      2,212          2,219          2,629
  Net gain on sale of securities available for sale.........     (4,198)        (1,871)        (2,302)
  Fair value adjustment on loans held for sale..............      4,955             --             --
  Impairment of long-lived assets...........................      2,081             --          3,269
  Deferred income taxes.....................................     (3,817)          (132)        (1,742)
  Originations of mortgage loans held for sale..............   (217,020)      (196,798)      (198,537)
  Proceeds from sales of mortgage loans held for sale.......    208,896        201,391        193,171
  Other, net................................................     (2,213)         1,060           (482)
                                                              ---------      ---------      ---------
        Net cash provided by operating activities...........  $  34,077      $  52,670      $  29,232
                                                              =========      =========      =========
CASH FLOWS FROM INVESTING ACTIVITIES
Proceeds from maturities of securities available for sale...  $ 205,772      $ 199,496      $ 177,636
Proceeds from maturities of securities held to maturity.....      9,982          7,874          9,099
Proceeds from sales of securities available for sale........    487,813        191,289        253,570
Purchase of securities held to maturity.....................    (14,197)       (13,967)       (73,392)
Purchase of securities available for sale...................   (857,278)      (653,333)      (473,060)
Net decrease (increase) in federal funds sold and other
  short-term investments....................................     24,398         (4,100)        (7,286)
Net (increase) decrease in interest earning deposits in
  banks.....................................................     (1,373)          (429)           248
Proceeds from the sale of credit card receivables...........     15,457             --             --
Proceeds from the sale of merchant bankcard processing......         --          1,400             --
Proceeds from the sale of consumer finance loans and
  leases....................................................      1,798          5,997             --
Loans made to customers and principal collection of loans,
  net.......................................................   (194,449)      (197,165)      (144,787)
Proceeds from sale of collection agency.....................        700             --             --
Premises and equipment expenditures, net....................     (6,164)        (3,374)        (7,586)
Proceeds from the sale of other real estate.................      1,259          2,529          1,559
                                                              ---------      ---------      ---------
        Net cash required for investing activities..........  $(326,282)     $(463,783)     $(263,999)
                                                              =========      =========      =========
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in demand deposits and savings accounts........  $  53,143      $  25,858      $      52
Net increase in time deposits...............................    122,410        116,794         89,724
Net increase in short-term borrowings.......................     29,175        199,836         87,111
Proceeds from long-term borrowings..........................    111,872         72,500         90,176
Payment of long-term borrowings.............................    (15,250)        (7,335)        (9,350)
Dividends paid..............................................    (12,130)       (10,039)        (8,750)
Issuance of common stock for employee incentive plans.......        430             --             --
Issuance of treasury stock for employee incentive plans.....      3,753          1,239          1,477
Purchase of treasury stock..................................     (1,327)            --           (256)
                                                              ---------      ---------      ---------
        Net cash provided by financing activities...........  $ 292,076      $ 398,853      $ 250,184
                                                              ---------      ---------      ---------
Net change in cash and cash equivalents.....................  $    (129)     $ (12,260)     $  15,417
Cash and cash equivalents:
  Beginning of year.........................................    105,347        117,607        102,190
                                                              ---------      ---------      ---------
  End of period.............................................  $ 105,218      $ 105,347      $ 117,607
                                                              =========      =========      =========
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION
Cash payments for:
  Interest paid to depositors...............................  $  99,002      $  90,448      $  74,272
  Interest paid on borrowings...............................     46,282         33,663         24,695
  Income taxes paid.........................................     11,616         12,865          8,223
NON-CASH INVESTING AND FINANCING
Other real estate acquired in settlement of loans...........      2,147          1,192          2,615
Transfer of securities held to maturity to available for
  sale......................................................     31,018             --        401,315
Transfer of short-term investments to securities available
  for sale..................................................      1,230             --             --
Transfer of loans and leases to loans held for sale.........     14,970             --             --
Transfer of long-term borrowings to short-term borrowings...     69,253             --             --
</TABLE>
 
          See accompanying notes to consolidated financial statements.
 
                                       30
<PAGE>   31
 
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
                   NOTES TO CONSOLIDATED FINANCIAL STATEMENTS
 
NOTE 1--SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
 
     The accounting and reporting policies of AMCORE Financial, Inc. and
subsidiaries (Company) conform to generally accepted accounting principles. The
preparation of consolidated financial statements requires management to make
estimates and assumptions that affect the reported amounts of assets and
liabilities as of the balance sheet date and revenues and expenses for the
period. Actual results could differ from those estimates. The following is a
summary of the more significant accounting policies of the Company.
 
DESCRIPTION OF THE BUSINESS
 
     The Company is a multi-bank holding company headquartered in Rockford,
Illinois, and conducts its principal business activities with businesses and
individuals located within northern Illinois and south-central Wisconsin. The
primary business of the Company is the extension of credit and the collection of
deposits with commercial and financial, agricultural, real estate and consumer
loan customers throughout northern Illinois and south-central Wisconsin.
Although the Company has a diversified loan portfolio, adverse changes in the
local economy would have a direct impact on the credit risk in the portfolio.
 
     The Company also offers a variety of financial services through its
financial services subsidiaries. These include mortgage banking, personal and
employee benefit trust administration for individuals, estates and corporations,
consumer finance, investment management, brokerage, insurance, debt collection
services and the reinsurance of credit life and accident and health insurance in
conjunction with the lending activities of the Company's bank subsidiaries.
 
PRINCIPLES OF CONSOLIDATION
 
     The consolidated financial statements include the accounts of the Company
and its subsidiaries. All significant intercompany accounts and transactions
have been eliminated in consolidation. All prior year financial information has
been restated to reflect the mergers that took place during 1997 as explained in
Note 2.
 
CASH AND CASH EQUIVALENTS
 
     For purposes of reporting cash flows, the Company considers cash on hand,
amounts due from banks, and cash items in process of clearing to be cash and
cash equivalents. Cash flows for fed funds sold and other short-term
investments, interest earning deposits in banks, demand deposits and savings
accounts, time deposits and short-term borrowings are reported net.
 
LOANS HELD FOR SALE
 
     Mortgage loans originated and intended for sale in the secondary market are
recorded at the lower of cost or estimated fair value in the aggregate. Gains
and losses on the sale of mortgage loans are included in other non-interest
income.
 
     Satellite dish loans were transferred to loans held for sale in
anticipation of the sale of these loans. These loans were recorded at the
estimated fair value, which resulted in a $5 million fair value write-down on
this portfolio recorded in operating expenses. The loans were subsequently sold
on January 28, 1998.
 
SECURITIES
 
     Securities are classified into three categories: held to maturity,
available for sale and trading. Securities held to maturity are reported at
amortized historical cost. Securities classified as available for sale are
recorded at fair value with unrealized gains and losses recorded as a component
of stockholders' equity, net of the related income tax effect. The level yield
method is used for the amortization and accretion of premiums and
 
                                       31
<PAGE>   32
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
discounts. Trading securities are recorded at fair value with unrealized gains
and losses recorded in earnings. There were no trading securities outstanding at
December 31, 1997 and 1996.
 
     Realized gains and losses on all securities are recognized by the specific
identification method upon sale or when values are deemed to be permanently
impaired.
 
     Upon completion of the merger of First National Bancorp, Inc. (FNB) on
April 18, 1997, approximately $31,018,000 of FNB's securities classified as held
to maturity were reclassified into the available for sale category. This
transfer was done as permitted by FAS 115, "Accounting for Certain Investments
in Debt and Equity Securities" in order to maintain the Company's existing
interest rate risk position. In December 1995, approximately $401,315,000 of
securities classified as held to maturity were reclassified into the available
for sale category. This transfer was done in response to the FASB's decision to
allow companies a one-time opportunity to reclassify their security portfolios.
This reclassification will significantly improve the flexibility in managing
interest and liquidity risks. While this may cause additional fluctuations in
the unrealized gain or loss component of total stockholders' equity, it has no
impact on regulatory risk-based capital calculations.
 
LOANS AND LEASES
 
     Loans and leases are carried at their principal amount outstanding plus any
unamortized net deferred origination costs or less any unamortized net deferred
origination fees less unearned income. Interest on commercial, real estate, and
certain installment and consumer loans is accrued and recognized as income based
upon the outstanding principal amount and the contractual interest rate of each
loan. Unearned interest on discounted installment loans has been recognized as
income using methods which approximate level rates of return over the terms of
the loans. Loan origination fees and certain direct origination costs on loans
retained in the portfolio are deferred and amortized over the expected life of
each loan as an adjustment of the related loan's yield.
 
     Loans measured for impairment as described in FAS No. 114 include
commercial, financial, agricultural, real estate commercial and real estate
construction loans. Loans are considered impaired when, based on current
information and events, it is probable that the Company will be unable to
collect all amounts due according to the contractual terms of the loan
agreement. Impairment is measured based on the present value of expected future
cash flows, or alternatively, the observable market price of the loans or the
fair value of the collateral. However, for those loans that are
collateral-dependent, and for which management has determined foreclosure is
probable, the measure of impairment is based on the fair value of the
collateral.
 
     The accrual of interest income for impaired loans is discontinued when
management believes, after considering collection efforts and other factors,
that the borrower's financial condition is such that collection of interest is
doubtful. Cash collections on impaired loans reduce the principal balance, and
no interest income is recognized until the remaining principal balance is fully
collectible. An impaired loan is returned to accrual status when management
determines that the borrower's financial condition has improved such that both
the remaining principal and interest are deemed collectible. In the event that
it is determined that collection of an impaired loan is remote, the loan is
charged-off.
 
     The Company considers consumer loans and residential real estate loans to
be smaller balance, homogeneous loans which are exempt from impairment
measurement per FAS No. 114. These types of loans, except for credit card and
consumer finance receivables, are placed on non-accrual when payment becomes 90
days past due. In most instances, a charge-off is recorded when a consumer or
residential real estate loan becomes 180 days past due. See Note 4 for a
breakdown of impaired and non-accrual loans.
 
ALLOWANCE FOR LOAN AND LEASE LOSSES
 
     The allowance for loan and lease losses is established through a provision
charged to expense. Loans and leases are charged against the allowance when
management believes the collectibility of principal is unlikely.
 
                                       32
<PAGE>   33
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
The allowance is an amount that management estimates will be adequate to absorb
possible future losses on existing loans and leases. The evaluation of the
allowance is based on past loan loss experience, regular evaluation of the
collectibility by management, lending officers and corporate loan review staff,
overall loan quality, the nature of and size of the portfolio, review of
specific problem loans, and current and anticipated economic conditions that may
affect the borrower's ability to pay. While management uses the best information
available to make its evaluation, future adjustments to the allowance may be
necessary if there are significant changes in economic conditions or other
factors.
 
PREMISES AND EQUIPMENT
 
     Premises and equipment including leasehold improvements are stated at cost
less accumulated depreciation and amortization. Depreciation is computed
principally on the straight-line method over the estimated useful life of the
assets. Leasehold improvements are being amortized using the straight-line
method over the terms of the respective leases or their useful lives, whichever
is shorter.
 
INTANGIBLE ASSETS
 
     Certain intangible assets, such as core deposit intangibles and goodwill,
have arisen from the purchase of subsidiaries. Core deposit intangibles
represent a valuation of acquired deposit relationships and are being amortized
based on the present value of the future net income or cost savings derived from
the related deposits over an original period ranging from six to twelve years.
Goodwill represents the excess of the purchase price over the fair value of the
identifiable net assets acquired and is being amortized over a maximum of
fifteen years using the straight-line method.
 
OTHER REAL ESTATE OWNED
 
     Other real estate owned is comprised of real properties acquired in partial
or full satisfaction of loans. These properties are carried as other assets at
the lower of cost or fair market value less estimated costs to sell the
properties. When the property is acquired through foreclosure, any excess of the
related loan balance over the adjusted fair market value less expected sales
costs, is charged against the allowance for loan and lease losses. Subsequent
write-downs or gains and losses upon sale, if any, are charged to other
operating expense.
 
MORTGAGE SERVICING RIGHTS
 
     The value of mortgage servicing rights either attained through the
origination of mortgage loans or the purchase of a servicing rights portfolio
are recognized as separate capitalized assets. When the originated mortgage
loans are sold or securitized into the secondary market, the Company allocates
the total cost of the mortgage loans between mortgage servicing rights and the
loans, based on their relative fair values. The cost of mortgage servicing
rights is amortized in proportion to, and over the period of, estimated net
servicing revenues.
 
     Mortgage servicing rights are periodically evaluated for impairment. For
purposes of measuring impairment, the servicing rights are stratified into pools
based on one or more predominant risk characteristics of the underlying loans
including loan type, interest rate, term and geographic location. Impairment
represents the excess of carrying value of a stratified pool over its fair
value, and is recognized through a valuation allowance. The fair value of each
servicing rights pool is evaluated based on the present value of estimated
future cash flows using a discount rate commensurate with the risk associated
with that pool, given current market conditions. Estimates of fair value include
assumptions about prepayment speeds, interest rates, and other factors which are
subject to change over time. Changes in these underlying assumptions could cause
the fair value of mortgage servicing rights, and the related valuation
allowance, to change significantly in the future.
 
                                       33
<PAGE>   34
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The Company retains the servicing rights on certain loans sold for which
the stated servicing income exceeds a normal servicing income. Mortgage loans
sales which result in an average contractual interest rate, adjusted for normal
servicing fees, that differs from the agreed yield to the purchaser, gains or
losses are recognized equal to the present value of such differential over the
estimated life of such loans. The resulting difference, or excess servicing, is
capitalized and amortized over the estimated life using a method approximating
the interest method. The unamortized balance is periodically evaluated in
relation to estimated future net servicing revenues, taking into consideration
changes in interest rates, current prepayment speeds and expected future cash
flows.
 
     The Company adopted FAS No. 125, "Accounting for Transfers and Servicing of
Financial Assets and Extinguishment of Liabilities", in January 1997. As a
result of this statement, the Company changed its method of evaluating for
impairment of purchase mortgage servicing rights and deferred excess servicing
rights, previously on an undiscounted basis, to a method similar to that used
for originated mortgage servicing rights. Under this method, the fair value is
evaluated based on the present value of estimated future cash flows using a
discount rate commensurate with the associated risk. During January 1997, the
Company reduced the carrying value of deferred excess servicing rights by
$742,000.
 
IMPAIRMENT OF LONG-LIVED ASSETS
 
     Long-lived assets and certain identifiable intangibles are reviewed for
impairment whenever events or changes in circumstances indicate that the
carrying amount of an asset may not be recoverable. A review of these assets in
1997 and 1995 resulted in an impairment charge of $2,081,000 and $3,269,000,
respectively, as explained in Note 7.
 
TRUST ASSETS
 
     Assets that are held by subsidiaries in a fiduciary or agency capacity are
not included in the consolidated financial statements as they are not assets of
the Company.
 
FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK
 
     The Company is a party to financial instruments with off-balance sheet risk
in the normal course of business to meet the financing needs of its customers
and to effectively manage its exposure to market risk. Interest rate derivative
financial instruments (swap, floor and cap agreements) are used to manage
interest rate exposure by hedging certain assets and liabilities. Income and
expense are accrued under the terms of the agreements based on expected
settlement payments, and are recorded as a component of net interest income.
Fees paid on these financial contracts are amortized over their contractual life
as a component of the interest reported on the asset or liability hedged. If a
hedged asset or liability settles before maturity of the instruments used as a
hedge, the derivatives are used to hedge a similar asset or liability.
 
INCOME TAXES
 
     Deferred taxes are provided on a liability method whereby deferred tax
assets are recognized for deductible temporary differences and operating loss
and tax credit carryforwards and deferred tax liabilities are recognized for
taxable temporary differences. Temporary differences are the differences between
the reported amounts of assets and liabilities and their tax bases. Deferred tax
assets are reduced by a valuation allowance when, in the opinion of management,
it is more likely than not that some portion or all of the deferred tax assets
will not be realized. Deferred tax assets and liabilities are adjusted for the
effects of changes in tax laws and rates on the date of enactment.
 
                                       34
<PAGE>   35
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
EARNINGS PER SHARE
 
     Basic earnings per share is based on dividing net income by the weighted
average number of shares of common stock outstanding during the periods. Diluted
earnings per share reflects the potential dilution that could occur if stock
options granted pursuant to incentive stock option plans were exercised or
converted into common stock that then shared in the earnings of the Company.
Earnings per share amounts have been restated to give effect to mergers
accounted for as a pooling of interests and the three-for-two stock split on
September 17, 1997. Basic and diluted earnings per share are presented on the
Consolidated Statements of Income, and a reconciliation of the calculations are
found in Note 15.
 
NEW ACCOUNTING STANDARDS
 
     The Financial Accounting Standards Board has issued FAS No. 130, "Reporting
Comprehensive Income", which establishes standards for reporting comprehensive
income and its components (revenues, expenses, gains, and losses) in a full set
of general-purpose financial statements. This statement requires that all items
required to be recognized under accounting standards as components of
comprehensive income be reported in a financial statement that is displayed with
the same prominence as other financial statements. The component of
comprehensive income is the net change in unrealized gains and losses on
securities available for sale and is disclosed in the Consolidated Statements of
Stockholders Equity. FAS No. 130 is effective for fiscal years beginning after
December 15, 1997.
 
     The Financial Accounting Standards Board has issued FAS No. 131,
"Disclosures about Segments of an Enterprise and Related Information", which
establishes standards for reporting financial and descriptive information about
operating segments in annual financial statements and requires the reporting of
selected information about operating segments in interim financial reports
issued to stockholders. Operating segments are components of a business about
which separate financial information is available that is evaluated regularly by
the chief operating decision maker in determining allocation of resources and in
assessing performance. AMCORE anticipates it will disclose the following
segments: Banking, Investment Management and Insurance, Mortgage Banking, and
Other. FAS No. 131 is effective for fiscal years beginning after December 15,
1997.
 
NOTE 2--MERGERS AND ACQUISITIONS
 
     Mergers occurred during the reported periods as follows:
 
     On July 16, 1997, Country Bank Shares Corporation (Country), a five bank
holding company, merged into the Company, which issued 2,469,417 common shares
in exchange for the 433,699 outstanding Country shares. At the date of the
merger, Country had total assets of approximately $310 million.
 
     On April 18, 1997, First National Bancorp, Inc. (FNB), a one bank holding
company, merged into the Company, which issued 2,822,286 common shares in
exchange for the 249,539 outstanding FNB shares. At the date of the merger, FNB
had total assets of approximately $219 million.
 
     On May 24, 1995, NBM Bancorp, Inc. (NBM), a two-bank holding company,
merged into the Company, which issued 2,458,440 common shares in exchange for
the 240,000 outstanding NBM shares. At the date of the merger, NBM had total
assets of approximately $166 million.
 
     Each of these mergers was accounted for as a pooling of interests and,
accordingly, all financial statements and related financial information of the
Company have been restated to include Country, FNB and NBM.
 
                                       35
<PAGE>   36
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The results of operations of the separate companies for the periods prior
to the mergers are summarized as follows:
 
<TABLE>
<CAPTION>
                                                   AMCORE                                    COMBINED
                                                  FINANCIAL        FNB         COUNTRY        TOTAL
                                                  ---------        ---         -------       --------
                                                                    (IN THOUSANDS)
<S>                                               <C>             <C>          <C>           <C>
Year ended December 31, 1995:
  Net interest income...........................   $79,800        $7,683       $10,768       $ 98,251
  Net income....................................    18,271         2,446         2,308         23,025
Year ended December 31, 1996:
  Net interest income...........................   $87,034        $7,927       $11,173       $106,134
  Net income....................................    26,383         2,817         2,676         31,876
Three months ended March 31, 1997:
  Net interest income...........................   $22,361        $1,935             *       $ 24,296
  Net income....................................     6,857           664             *          7,521
Six months ended June 30, 1997:
  Net interest income...........................   $49,330            **       $ 5,828       $ 55,158
  Net income....................................    10,648            **          (378)        10,270
</TABLE>
 
- ---------------
 * Not required since the merger with Country took place after FNB merger.
 
** The six month results of AMCORE Financial include FNB as the merger was
   completed on April 18, 1997.
 
COMPLETED AND PENDING MERGERS
 
     On February 17, 1998, the Company acquired Investors Management Group, LTD
(IMG) of Des Moines, Iowa. IMG is an asset management firm with approximately
$1.6 billion in assets under management. The Company issued 270,139 shares at
closing with additional shares to be issued contingent upon IMG's future
performance. This transaction was accounted for as a purchase.
 
     On November 11, 1997, the Company signed a definitive agreement to merge
with Midwest Federal Financial Corp. (Midwest), a one-bank holding company with
assets of approximately $212 million. Midwest, headquartered in Baraboo,
Wisconsin, has nine locations in Central Wisconsin. The transaction has received
regulatory approval and must be approved by Midwest shareholders. The terms of
the transaction require the Company to exchange 1.174 shares of common stock in
exchange for each of the 1,627,674 outstanding shares of Midwest stock for a
total of 1,910,889 shares. The transaction is expected to close March 27, 1998
and will be accounted for as a pooling of interests.
 
                                       36
<PAGE>   37
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 3--SECURITIES
 
     A summary of securities at December 31, 1997, 1996 and 1995 were as
follows:
 
<TABLE>
<CAPTION>
                                                                  GROSS        GROSS
                                                   AMORTIZED    UNREALIZED   UNREALIZED      FAIR
                                                      COST        GAINS        LOSSES       VALUE
                                                   ---------    ----------   ----------     -----
                                                                    (IN THOUSANDS)
<S>                                                <C>          <C>          <C>          <C>
At December 31, 1997
  Securities Available for Sale:
     U.S. Treasury...............................  $  104,132    $   836      $    (84)   $  104,884
     U.S. Government agencies....................     267,696        938          (833)      267,801
     Agency mortgage-backed securities...........     586,285      5,651        (1,948)      589,988
     State and political subdivisions............     316,028     10,069          (189)      325,908
     Corporate obligations and other.............     153,501        458          (947)      153,012
                                                   ----------    -------      --------    ----------
       Total Securities Available for Sale.......  $1,427,642    $17,952      $ (4,001)   $1,441,593
                                                   ==========    =======      ========    ==========
Securities Held to Maturity:
  U.S. Treasury..................................  $    1,554    $     7      $     --    $    1,561
  State and political subdivisions...............      13,866        207           (26)       14,047
  Corporate obligations and other................           3         --            --             3
                                                   ----------    -------      --------    ----------
       Total Securities Held to Maturity.........  $   15,423    $   214      $    (26)   $   15,611
                                                   ----------    -------      --------    ----------
          Total Securities.......................  $1,443,065    $18,166      $ (4,027)   $1,457,204
                                                   ==========    =======      ========    ==========
At December 31, 1996:
  Securities Available for Sale:
     U.S. Treasury...............................  $  132,377    $   650      $   (544)   $  132,483
     U.S. Government agencies....................     165,557        216        (3,855)      161,918
     Agency mortgage-backed securities...........     553,472      2,659        (5,203)      550,928
     State and political subdivisions............     263,341      4,545        (1,330)      266,556
     Corporate obligations and other.............     102,504        223          (655)      102,072
                                                   ----------    -------      --------    ----------
       Total Securities Available for Sale.......  $1,217,251    $ 8,293      $(11,587)   $1,213,957
                                                   ==========    =======      ========    ==========
Securities Held to Maturity:
  U.S. Treasury..................................  $    1,647    $     5      $     (4)   $    1,648
  U.S. Government agencies.......................       5,684         61            --         5,745
  Agency mortgage-backed securities..............      11,413        103          (115)       11,401
  State and political subdivisions...............      31,587        703           (86)       32,204
  Corporate obligations and other................       4,217         27            --         4,244
                                                   ----------    -------      --------    ----------
     Total Securities Held to Maturity...........  $   54,548    $   899      $   (205)   $   55,242
                                                   ----------    -------      --------    ----------
       Total Securities..........................  $1,271,799    $ 9,192      $(11,792)   $1,269,199
                                                   ==========    =======      ========    ==========
At December 31, 1995:
  Securities Available for Sale:
     U.S. Treasury...............................  $  144,553    $ 1,719      $   (314)   $  145,958
     U.S. Government agencies....................      73,659        694          (195)       74,158
     Agency mortgage-backed securities...........     418,449      4,293          (639)      422,103
     State and political subdivisions............     218,273      5,418        (1,064)      222,627
     Corporate obligations and other.............      80,130        562          (401)       80,291
                                                   ----------    -------      --------    ----------
       Total Securities Available for Sale.......  $  935,064    $12,686      $ (2,613)   $  945,137
                                                   ==========    =======      ========    ==========
At December 31, 1995:
  Securities Held to Maturity:
     U.S. Treasury...............................  $   28,591    $   258      $   (176)   $   28,673
     U.S. Government agencies....................          --         --            --            --
     Agency mortgage-backed securities...........       1,000         41            --         1,041
     State and political subdivisions............      32,226        918           (77)       33,067
     Corporate obligations and other.............       7,791         25            --         7,816
                                                   ----------    -------      --------    ----------
       Total Securities Held to Maturity.........  $   69,608    $ 1,242      $   (253)   $   70,597
                                                   ----------    -------      --------    ----------
          Total Securities.......................  $1,004,672    $13,928      $ (2,866)   $1,015,734
                                                   ==========    =======      ========    ==========
</TABLE>
 
                                       37
<PAGE>   38
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The amortized cost and fair value of both securities available for sale and
securities held to maturity as of December 31, 1997, by contractual maturity are
shown below. Mortgage-backed security maturities may differ from contractual
maturities because the underlying mortgages may be called or prepaid without any
penalties. Therefore, these securities are not included in the maturity
categories in the following maturity summary.
 
<TABLE>
<CAPTION>
                                                          AVAILABLE FOR SALE         HELD TO MATURITY
                                                       ------------------------    --------------------
                                                       AMORTIZED        FAIR       AMORTIZED     FAIR
                                                          COST         VALUE         COST        VALUE
                                                       ---------       -----       ---------     -----
                                                                        (IN THOUSANDS)
<S>                                                    <C>           <C>           <C>          <C>
Due in one year or less............................    $  150,029    $  150,264     $ 2,537     $ 2,541
Due after one year through five years..............       187,846       190,355      10,814      10,914
Due after five years through ten years.............       241,829       244,637       1,920       1,984
Due after ten years................................       171,511       176,844         152         172
Mortgage-backed securities (agency and
  corporate).......................................       676,427       679,493          --          --
                                                       ----------    ----------     -------     -------
  Total Securities.................................    $1,427,642    $1,441,593     $15,423     $15,611
                                                       ==========    ==========     =======     =======
</TABLE>
 
     At December 31, 1997, 1996, and 1995, securities with a fair value of
approximately $927,772,000, $755,611,000 and $551,075,000, respectively, were
pledged to secure public deposits, securities sold under agreements to
repurchase and for other purposes required by law.
 
NOTE 4--LOANS AND LEASES AND ALLOWANCE FOR LOAN AND LEASE LOSSES
 
     The composition of the loan and lease portfolio at December 31, 1997 and
1996, was as follows:
 
<TABLE>
<CAPTION>
                                                                   1997            1996
                                                                   ----            ----
                                                                      (IN THOUSANDS)
<S>                                                             <C>             <C>
Commercial, financial and agricultural......................    $  632,378      $  568,451
Real estate-construction....................................        60,624          53,039
Real estate-commercial......................................       504,275         413,870
Real estate-residential.....................................       457,086         434,123
Installment and consumer....................................       305,491         336,741
Direct lease financing......................................         3,194           2,066
                                                                ----------      ----------
  Gross loans and leases....................................    $1,963,048      $1,808,290
  Unearned income...........................................          (374)         (1,169)
                                                                ----------      ----------
  Loans and leases, net of unearned income..................    $1,962,674      $1,807,121
  Allowance for loan and lease losses.......................       (19,908)        (19,295)
                                                                ----------      ----------
          NET LOANS AND LEASES..............................    $1,942,766      $1,787,826
                                                                ==========      ==========
</TABLE>
 
                                       38
<PAGE>   39
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     Non-performing loan information as of and for the years ended December 31,
1997 and 1996 was as follows:
 
<TABLE>
<CAPTION>
                                                                 1997         1996
                                                                 ----         ----
                                                                   (IN THOUSANDS)
<S>                                                             <C>          <C>
Impaired Loans:
  Non-accrual Loans:
     Commercial.............................................    $10,060      $ 4,907
     Real estate............................................      4,484        4,450
  Troubled debt restructurings..............................        377          283
Other Non-performing:
  Non-accrual loans(1)......................................      4,947        2,662
                                                                -------      -------
Total Non-performing Loans..................................    $19,868      $12,302
                                                                =======      =======
  Loans 90 days or more past due and still accruing.........    $ 3,386      $ 3,692
</TABLE>
 
- ---------------
(1) These loans are not considered impaired since they are part of a small
    balance homogeneous portfolio which are exempt from FAS 114.
 
<TABLE>
<CAPTION>
                                                                 1997         1996
                                                                 ----         ----
                                                                   (IN THOUSANDS)
<S>                                                             <C>          <C>
Allowance provided for impaired loans, included in the
  allowance for loan losses.................................    $ 2,311      $ 1,496
Average recorded investment in impaired loans...............     15,874       11,287
Interest income recognized from impaired loans..............        717          504
</TABLE>
 
     An analysis of the allowance for loan and lease losses for the years ended
December 31, 1997, 1996, and 1995 follows:
 
<TABLE>
<CAPTION>
                                                            1997         1996         1995
                                                            ----         ----         ----
                                                                    (IN THOUSANDS)
<S>                                                        <C>          <C>          <C>
Balance at beginning of year...........................    $19,295      $17,107      $17,246
Provision charged to expense...........................      7,045        5,428        3,165
Loans charged off......................................     (7,777)      (4,641)      (4,563)
Recoveries on loans previously charged off.............      1,345        1,401        1,259
                                                           -------      -------      -------
          BALANCE AT END OF YEAR.......................    $19,908      $19,295      $17,107
                                                           =======      =======      =======
</TABLE>
 
     The Company's subsidiaries have had, and are expected to have in the
future, banking transactions with directors, executive officers, their immediate
families and affiliated companies in which they are a principal stockholder
(commonly referred to as related parties). These transactions were made in the
ordinary course of business on substantially the same terms as comparable
transactions with other borrowers.
 
     In the opinion of management, related party loan transactions during 1997
and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                                                  1997          1996
                                                                  ----          ----
                                                                    (IN THOUSANDS)
<S>                                                             <C>           <C>
Balance at beginning of year................................    $ 44,074      $ 36,809
New loans...................................................      85,123       103,806
Repayments..................................................     (84,506)      (96,541)
                                                                --------      --------
          BALANCE AT END OF YEAR............................    $ 44,691      $ 44,074
                                                                ========      ========
</TABLE>
 
                                       39
<PAGE>   40
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 5--FAIR VALUES OF FINANCIAL INSTRUMENTS
 
     The estimated fair value amounts have been estimated by the Company using
available market information and appropriate valuation methodologies as
discussed below. Considerable judgement was required, however, to interpret
market data to develop the estimates of fair value. Accordingly, the estimates
presented below are not necessarily indicative of the amounts the Company could
realize in a current market exchange.
 
     The following table shows the carrying amounts and estimated fair values of
financial instruments at December 31, 1997 and 1996 that have liquid markets in
which fair value is assumed to be equal to the carrying amount, or have readily
available quoted market prices, or are based on quoted prices for similar
financial instruments:
 
<TABLE>
<CAPTION>
                                                        1997                           1996
                                             ---------------------------    ---------------------------
                                              CARRYING        ESTIMATED      CARRYING        ESTIMATED
                                               AMOUNT         FAIR VALUE      AMOUNT         FAIR VALUE
                                              --------        ----------     --------        ----------
                                                                   (IN THOUSANDS)
<S>                                          <C>              <C>           <C>              <C>
Cash and cash equivalents................    $  105,218       $  105,218    $  105,347       $  105,347
Interest earning deposits in banks.......         2,206            2,206           833              833
Federal funds sold and other short-term
  investments............................           633              633        26,261           26,261
Loans held for sale......................        29,869           30,354        11,730           12,027
Securities available for sale............     1,441,593        1,441,593     1,213,957        1,213,957
Securities held to maturity..............        15,423           15,611        54,548           55,242
</TABLE>
 
     The carrying amounts and estimated fair values of accruing loans and leases
at December 31, 1997 and 1996 were as follows:
 
<TABLE>
<CAPTION>
                                                        1997                           1996
                                             ---------------------------    ---------------------------
                                              CARRYING        ESTIMATED      CARRYING        ESTIMATED
                                               AMOUNT         FAIR VALUE      AMOUNT         FAIR VALUE
                                              --------        ----------     --------        ----------
                                                                   (IN THOUSANDS)
<S>                                          <C>              <C>           <C>              <C>
Commercial, financial and agricultural...    $  622,318       $  630,730    $  563,572       $  567,998
Real estate..............................     1,017,501        1,038,293       895,268          903,291
Installment and consumer, net............       300,170          298,364       334,195          332,424
Direct lease financing...................         3,194            3,279         2,066            2,085
                                             ----------       ----------    ----------       ----------
          Total loans....................    $1,943,183       $1,970,666    $1,795,101       $1,805,798
                                             ==========       ==========    ==========       ==========
</TABLE>
 
     Fair values of loans were estimated for portfolios of loans with similar
characteristics. Loans were segregated by type as shown above and then each
category was further segmented into fixed and floating interest rate terms. The
fair value of fixed-rate loans, excluding residential real-estate loans, was
calculated by discounting contractual cash flows using estimated market discount
rates which reflect the credit and interest rate risk inherent in the loan. The
cash flows were further reduced by estimated prepayment assumptions. Fair value
for residential real-estate loans was estimated by discounting estimated future
cash flows, adjusted for prepayment estimates, using market discount rates based
on secondary market sources. Cash flow assumptions for credit card loans did not
include the value of new receivables generated from existing cardholders over
the remaining estimated life of the portfolio, thus understating the value of
the entire credit card relationship. The fair value of non-accrual loans with a
recorded book value of $19.5 million and $12.0 million in 1997 and 1996,
respectively, was not estimated because it was not practicable to reasonably
assess the credit adjustment that would be applied in the marketplace for such
loans.
 
                                       40
<PAGE>   41
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The following table shows the carrying amounts and estimated fair values of
financial instrument liabilities and other off-balance sheet financial
instruments at December 31, 1997 and 1996:
 
<TABLE>
<CAPTION>
                                                        1997                           1996
                                             ---------------------------    ---------------------------
                                              CARRYING        ESTIMATED      CARRYING        ESTIMATED
                                               AMOUNT         FAIR VALUE      AMOUNT         FAIR VALUE
                                              --------        ----------     --------        ----------
                                                                   (IN THOUSANDS)
<S>                                          <C>              <C>           <C>              <C>
Demand deposits and savings..............    $1,086,836       $1,086,836    $1,033,693       $1,033,693
Time deposits............................     1,440,207        1,452,360     1,317,797        1,332,432
Short-term borrowings....................       647,509          649,771       549,081          550,319
Long-term borrowings.....................       159,125          161,323       131,612          131,614
Commitments to extend credit.............            --              (11)           --             (488)
Standby letters of credit................          (295)            (681)         (234)            (595)
Interest rate swap agreements............          (459)          (1,075)          (20)            (103)
Interest rate floor agreements...........         1,072              183           147              172
Interest rate cap agreements.............           941               13            --               --
Forward contracts........................            --             (172)           --             (102)
</TABLE>
 
     The fair value of deposits with no stated maturity, such as non-interest
bearing demand deposits, savings, NOW and money market accounts, is equal to the
carrying amount. There is, however, considerable additional value to the core
deposits of the Company, a significant portion of which has not been recognized
in the financial statements. This value results from the cost savings of these
core funding sources versus obtaining higher-rate funding in the market. The
fair value of time deposits was determined by discounting contractual cash flows
using currently offered rates for deposits with similar remaining maturities.
The estimated fair value of both accrued interest receivable and accrued
interest payable was considered to be equal to the carrying value.
 
     The fair value of off-balance sheet instruments was estimated based on the
amount the Company would pay to terminate the contracts or agreements, using
current rates and, when appropriate, the current creditworthiness of the
customer. The off-balance sheet carrying amounts shown above represent accruals
or deferred fees arising from those unrecognized financial instruments.
 
     The above fair value estimates were made at a discrete point in time based
on relevant market information and other assumptions about the financial
instruments. As no active market exists for a significant portion of the
Company's financial instruments, fair value estimates were based on judgements
regarding current economic conditions, future expected cash flows and loss
experience, risk characteristics and other factors. These estimates are
subjective in nature and involve uncertainties and therefore cannot be
calculated with precision. Changes in these assumptions could significantly
affect these estimates. In addition, the fair value estimates are based on
existing on and off-balance sheet financial instruments without attempting to
assess the value of anticipated future business and the value of assets and
liabilities that are not considered financial instruments. Significant
investments in subsidiaries, specifically the trust, mortgage and brokerage
operations, are not considered financial instruments and the franchise values
have not been included in the fair value estimates. Similarly, premises and
equipment and intangible assets have not been considered.
 
                                       41
<PAGE>   42
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 6--PREMISES AND EQUIPMENT
 
     A summary of premises and equipment at December 31, 1997 and 1996, follows:
 
<TABLE>
<CAPTION>
                                                            1997          1996
                                                            ----          ----
                                                              (IN THOUSANDS)
<S>                                                       <C>           <C>
Land....................................................  $  9,694      $  9,450
Buildings and improvements..............................    53,956        52,862
Furniture and equipment.................................    39,348        39,058
Leasehold improvements..................................     5,520         5,250
Construction in progress................................     1,269           286
                                                          --------      --------
Total premises and equipment............................  $109,787      $106,906
Accumulated depreciation and amortization...............   (55,013)      (50,339)
                                                          --------      --------
          PREMISES AND EQUIPMENT, NET...................  $ 54,774      $ 56,567
                                                          ========      ========
</TABLE>
 
NOTE 7--IMPAIRMENT OF LONG-LIVED ASSETS
 
     The Company recognized an impairment charge of $2,081,000 in 1997 related
to the write-off of data processing hardware and software resulting from the
decision to outsource this function in the future, and a charge in 1995 totaling
$3,269,000 in conjunction with the adoption of FAS No. 121--"Accounting for the
Impairment of Long-Lived Assets". These charges resulted from changes in
circumstances that indicated the carrying values of assets noted below may not
be fully recoverable. The charges were comprised of the following:
 
<TABLE>
<CAPTION>
                                                               1997        1995
                                                              AMOUNT      AMOUNT
                                                              ------      ------
                                                                (IN THOUSANDS)
<S>                                                           <C>         <C>
EDP hardware/software.......................................  $2,081      $   --
Customer list intangibles and goodwill......................      --       1,674
Bank facilities.............................................      --       1,595
                                                              ------      ------
  Total impairment charge...................................  $2,081      $3,269
                                                              ======      ======
</TABLE>
 
     The 1997 write-off of data processing hardware and software was based on an
analysis of equipment and software that would not provide future value as a
result of the decision to outsource core bank data processing.
 
     The 1995 write-down of the customer list intangible at the collection
agency was based on an analysis of net revenues from the original acquired
customer list. The fair value of the customer list intangible and related
goodwill was calculated by estimating future cash flows from the original
acquired customer list. This analysis demonstrated a reduction of profitability
from the original customer base, which was caused by a loss of customers and
reduced volumes from other customers. Accordingly, the remaining unamortized
balance of the customer list intangible was considered to be partially impaired
and was written-down by $669,000. The entire unamortized balance of goodwill
totaling $865,000 was written-off, as the goodwill was directly identified with
the impaired customer list. The collection agency was sold in December, 1997.
 
     The remaining 1995 unamortized customer list intangible acquired from a
local insurance agency, with a balance of $140,000, was written-off. This
write-off was primarily caused by an analysis of the performance since the
August 1994 acquisition, which disclosed lower than anticipated renewal rates in
comparison to historical experience prior to the acquisition.
 
     The write-down of bank facilities was based on the results of engineering
studies and appraisals conducted in 1995 that identified concerns regarding the
suitability of the buildings as income producing
 
                                       42
<PAGE>   43
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
properties. As a result, the Company vacated non-banking related tenants and
began activities to dispose of the buildings. The write-down was based on an
estimate of future benefits from the continuing use of the properties as bank
facilities.
 
NOTE 8--MORTGAGE SERVICING RIGHTS
 
     The unpaid principal balance of mortgage loans serviced for others, which
are not included on the consolidated balance sheets, was $1,013,689,000 and
$1,024,920,000 at December 31, 1997 and 1996, respectively. Of this amount, the
Company has recorded both originated and purchased capitalized mortgage
servicing rights, as shown below, on mortgage loans serviced balance of
$553,869,000 as of December 31, 1997. The remaining balance of originated loans
sold and serviced for others also have servicing rights associated with them;
however, these servicing rights arose prior to the adoption of FAS 122, and
accordingly, have not been capitalized.
 
     The carrying value and fair value of capitalized mortgage servicing rights
consisted of the following as of December 31, 1997 and 1996, respectively:
 
<TABLE>
<CAPTION>
                                                                1997        1996
                                                                ----        ----
                                                                 (IN THOUSANDS)
<S>                                                            <C>         <C>
Unamortized cost of mortgage servicing rights..............    $6,091      $5,154
Valuation allowance........................................      (284)         --
                                                               ------      ------
Carrying value of mortgage servicing rights................    $5,807      $5,154
                                                               ======      ======
Fair value of mortgage servicing rights....................    $6,798      $5,508
                                                               ======      ======
</TABLE>
 
     The following is an analysis of the activity for mortgage servicing rights
and the related valuation allowance for 1997 and 1996:
 
<TABLE>
<CAPTION>
                                                                1997        1996
                                                                ----        ----
                                                                 (IN THOUSANDS)
<S>                                                            <C>         <C>
UNAMORTIZED COST OF MORTGAGE SERVICING RIGHTS
Balance at beginning of year...............................    $5,154      $4,485
Additions of originated mortgage servicing rights..........     1,706       1,362
Amortization...............................................      (769)       (693)
                                                               ------      ------
  Balance at end of year...................................    $6,091      $5,154
                                                               ======      ======
VALUATION ALLOWANCE
Balance at beginning of year...............................    $   --      $  147
Impairment allowance charged to expense....................       284          76
Recoveries on impairments..................................        --        (223)
                                                               ------      ------
  Balance at end of year...................................    $  284      $   --
                                                               ======      ======
</TABLE>
 
                                       43
<PAGE>   44
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 9--SHORT TERM BORROWINGS
 
     At December 31, 1997, 1996 and 1995, short-term borrowings consisted of:
 
<TABLE>
<CAPTION>
                                                          1997          1996          1995
                                                          ----          ----          ----
                                                                   (IN THOUSANDS)
<S>                                                     <C>           <C>           <C>
Securities sold under agreements to repurchase......    $528,607      $441,915      $244,300
Federal Home Loan Bank borrowings...................      70,679        74,168        32,146
Federal funds purchased.............................      44,550        14,800        12,759
U.S. Treasury tax and loan note accounts............       3,673         3,743         4,894
Commercial paper borrowings.........................          --        14,455         3,150
Other short-term borrowings.........................          --            --         1,735
                                                        --------      --------      --------
  TOTAL SHORT-TERM BORROWINGS.......................    $647,509      $549,081      $298,984
                                                        ========      ========      ========
</TABLE>
 
     Additional details on securities sold under agreements to repurchase are as
follows:
 
<TABLE>
<CAPTION>
                                                          1997          1996          1995
                                                          ----          ----          ----
                                                                   (IN THOUSANDS)
<S>                                                     <C>           <C>           <C>
Average balance during the year.....................    $559,344      $398,701      $202,833
Maximum month-end balance during the year...........     660,774       458,540       285,269
Weighted average rate during the year...............        5.75%         5.55%         6.04%
Weighted average rate at December 31................        5.82%         5.37%         5.48%
</TABLE>
 
     The Company has a commercial paper agreement with an unrelated financial
institution (Issuer) that provides for the Company to issue non-rated short-term
unsecured debt obligations at negotiated rates and terms, not to exceed
$25,000,000. In the event the agent is unable to place the Company's commercial
paper on a particular day, the proceeds are provided by overnight borrowings on
a line of credit with the same financial institution. The commercial paper
agreement was primarily established for the purpose of funding consumer finance
receivables and mortgage loans held for sale. This agreement may be terminated
at any time by written notice of either the Issuer or the Company.
 
NOTE 10--LONG-TERM BORROWINGS
 
     Long-term borrowings consisted of the following at December 31, 1997 and
1996:
 
<TABLE>
<CAPTION>
                                                                  1997          1996
                                                                  ----          ----
                                                                    (IN THOUSANDS)
<S>                                                             <C>           <C>
Term loan...................................................    $     --      $ 13,600
Federal Home Loan Bank borrowings...........................     117,195       111,514
Capital Trust preferred securities..........................      40,000            --
Other long-term borrowings..................................       1,930         6,498
                                                                --------      --------
          TOTAL LONG-TERM BORROWINGS........................    $159,125      $131,612
                                                                ========      ========
</TABLE>
 
     Several of the Company's subsidiary banks periodically borrowed additional
funds from the Federal Home Loan Bank in connection with the purchase of
mortgage-backed securities. The ending balance of the borrowings was
$117,195,000 and $111,514,000 at December 31, 1997 and 1996, respectively. The
average maturity of these borrowings at December 31, 1997 is 3.6 years, with a
weighted average borrowing rate of 5.64%.
 
     On March 31, 1997, the Company issued $40 million of capital securities
through AMCORE Capital Trust I ("Trust"), a statutory business trust. The
capital securities pay cumulative cash distributions semiannually at an annual
rate of 9.35%. The securities are redeemable from March 25, 2007 until March 25,
 
                                       44
<PAGE>   45
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
2017 at a declining rate of 104.6750% to 100% of the principal amount. After
March 25, 2017, they are redeemable at par until June 15, 2027 when redemption
is mandatory. Prior redemption is permitted under certain circumstances such as
changes in tax or regulatory capital rules. The proceeds of the capital
securities were invested by the Trust in junior subordinated debentures which
represents all of the assets of the Trust. The Company fully and unconditionally
guarantees the capital securities through the combined operation of the
debentures and other related documents. The Company's obligations under the
guarantee are unsecured and subordinate to senior and subordinated indebtedness
of the company.
 
     Other long-term borrowings include a non-interest bearing note from the
January 1993 acquisition of a local collection agency, which had a balance of
$1,930,000 and $2,231,000 at December 31, 1997 and 1996, respectively. The note
requires annual principal payments of $444,000 through 2002. The note was
discounted at an interest rate of 8.0%.
 
     Scheduled reductions of long-term borrowings are as follows:
 
<TABLE>
<CAPTION>
                                                       TOTAL
                                                       -----
                                                   (IN THOUSANDS)
<S>                                                <C>
1998...........................................       $    392
1999...........................................         28,169
2000...........................................         31,948
2001...........................................            498
2002...........................................         55,013
Thereafter.....................................         43,105
                                                      --------
          TOTAL................................       $159,125
                                                      ========
</TABLE>
 
NOTE 11--FINANCIAL INSTRUMENTS WITH OFF-BALANCE SHEET RISK
 
     The Company is a party to financial instruments with off-balance sheet risk
in the normal course of business to meet the financing needs of its customers
and to effectively manage its exposure to market risk.
 
     Credit risk is the possibility that the Company will incur a loss due to
the other party's failure to perform under its contractual obligations. The
Company's exposure to credit loss in the event of non-performance by the other
party with regard to commitments to extend credit and standby letters of credit
is represented by the contractual amount of those instruments. The Company uses
the same credit policies in making commitments and conditional obligations as it
does for actual extensions of credit. The credit risk involved for commitments
to extend credit and in issuing standby letters of credit is essentially the
same as that involved in extending loans to customers. The amount of collateral
obtained, if deemed necessary by the Company upon extension of credit, is based
on management's credit evaluation of the customer. Collateral held varies, but
may include accounts receivable, securities, inventory, property and equipment
and income-producing commercial properties.
 
     Market risk is the possibility that, due to changes in interest rates or
other economic conditions, the Company's net interest income will be adversely
affected. The financial instruments utilized by the Company to manage this risk
include interest rate swaps, floors and caps; and forward contracts. The
contract or notional amounts of these instruments reflect the extent of
involvement the Company has in particular classes of financial instruments. The
contract or notional amount of interest rate swap, floor and cap agreements and
forward contracts represent only limited exposure to credit risk.
 
                                       45
<PAGE>   46
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     A summary of the contract amount of the Company's exposure to off-balance
sheet risk as of December 31, 1997 and 1996, is as follows (in thousands):
 
<TABLE>
<CAPTION>
                                                                  1997          1996
                                                                  ----          ----
<S>                                                             <C>           <C>
Financial instruments whose contract amount represent credit
  risk only:
  Commitments to extend credit..............................    $437,942      $437,000
  Standby letters of credit.................................      54,494        46,247
Financial instruments whose contract or notional amount
  represent market risk only:
  Interest rate swap agreements.............................     270,000       145,000
  Interest rate floor agreements............................     145,000        50,000
  Interest rate cap agreements..............................      75,000            --
  Forward contracts.........................................      23,664        14,267
</TABLE>
 
     Commitments to extend credit are contractual agreements entered into with
customers as long as there is no violation of any condition established on the
contract. Commitments generally have fixed expiration dates or other termination
clauses and may require payment of a fee. Since many of the commitments are
expected to expire without being drawn upon, the total commitment amounts do not
necessarily represent future cash requirements.
 
     Standby letters of credit are conditional commitments issued by the Company
to guarantee the performance of a customer to a third party. Those guarantees
are primarily issued to support public and private borrowing arrangements,
including commercial paper, bond financing and similar transactions.
 
     The Company has no derivative financial instruments held or issued for
trading purposes. The derivative financial instruments with which the Company is
involved are utilized for purposes of asset/liability management to modify the
existing market risk characteristics of certain hedged assets and liabilities.
An interest rate swap agreement is the most common financial instrument used for
these purposes and involves the exchange of fixed and floating rate interest
payment obligations based on the underlying notional principal amounts. The
amounts potentially subject to market and credit risks are the streams of
interest payments under the agreements and not the notional principal amounts
used only to express the volume of the transactions. The Company's credit risk
on a swap agreement is limited to nonperformance of the counterparty's
obligations under the terms of the swap agreement. The Company deals exclusively
with counterparties that have high credit ratings, and based on management's
assessments, all counterparties were expected to meet any outstanding
obligations as of December 31, 1997.
 
                                       46
<PAGE>   47
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     Following is a table outlining the nature and terms of each swap agreement
as of December 31, 1997:
 
<TABLE>
<CAPTION>
                           NOTIONAL                                                        MATURITY
     TYPE OF SWAP       AMOUNT (000'S)               PAY                   RECEIVE           DATE
     ------------       --------------               ---                   -------         --------
<S>                     <C>               <C>                          <C>                 <C>
Fixed Rate............     $40,000             Fixed (6.050%)           3 Month LIBOR      09/05/98
Fixed Rate............      25,000             Fixed (5.255%)           3 Month LIBOR      03/08/99
Fixed Rate............      20,000             Fixed (6.458%)           3 Month LIBOR      05/15/01
Fixed Rate............      15,000             Fixed (5.720%)           3 Month LIBOR      10/11/01
Fixed Rate............      25,000             Fixed (8.520%)               PRIME          12/23/00
Fixed Rate............      70,000             Fixed (8.520%)               PRIME          07/15/01
Fixed Rate............       5,000             Fixed (8.410%)               PRIME          08/06/01
Fixed Rate............      20,000             Fixed (8.520%)               PRIME          09/22/01
Indexed Amortizing....      25,000        3 Month LIBOR minus 15 BP     Fixed (7.000%)     08/06/07
Indexed Amortizing....      15,000        3 Month LIBOR minus 15 BP     Fixed (7.000%)     08/27/07
Commercial Paper......       5,000             Fixed (5.980%)          Commercial Paper    05/21/98
Commercial Paper......       5,000             Fixed (5.825%)          Commercial Paper    10/09/98
(BP = basis points)
</TABLE>
 
     The fixed rate swap agreements totaling $100,000,000 where the Company
receives 3 month LIBOR, are used to hedge market risk associated with the
repurchase agreements used in the investment leveraging program. The fixed rate
swap agreements totaling $120,000,000 where the Company receives PRIME, are used
to hedge market risk associated with fixed rate loans. The indexed amortizing
swap agreements totaling $40,000,000 where the Company receives 7.000%, are used
to lower the Company's cost of deposits. The $10,000,000 of commercial paper
swap agreements was originally entered into to hedge the interest rate risk
associated with commercial paper borrowings. This commercial paper borrowing
arrangement has no outstanding balances payable, and these agreements are now
used to hedge repurchase agreements.
 
     The Company is also party to various interest rate floor contracts with a
notional amount totaling $145,000,000. Interest rate floor contracts totaling
$50,000,000 provides the Company with a market risk hedge on the mortgage-backed
security portfolio in the event of a significant decline in interest rates.
Interest rate floor contracts totaling $20,000,000 are used to hedge market risk
associated with mortgage servicing assets. The remaining $75,000,000 of interest
rate floor contracts and the corresponding $75,000,000 of interest rate caps
provide the Company with a market risk hedge on the Company's repurchase
agreements.
 
     Each of the interest rate swap agreements require a quarterly cash
settlement of the net difference between the calculated pay and receive amounts
on each transaction. The net difference between the calculated pay and receive
amounts is accrued on a monthly basis and recorded as an adjustment of the
interest income or expense of the asset or liability being hedged. Premiums paid
for the purchase of interest rate floor contracts are amortized over the
respective lives of the contracts. Each floor rate reprices quarterly and a cash
settlement is received from the counterparty and recorded as an adjustment to
interest income, if the indexed rate falls below the floor rate. Floors and caps
are similarly tied to the 3 month LIBOR. Any gains or losses on swap, floor, or
cap contracts closed out prior to the maturity date are recognized ratably over
the remaining life of the contract.
 
     Forward contracts provide for future delivery or purchase of securities or
interest rate instruments. The Company's affiliates enter into forward contracts
in connection with specific customer transactions and to minimize the market
risk exposure of mortgage banking activities.
 
     The Company periodically will sell options for the right to purchase
certain securities held in its investment portfolio to a bank or dealer. These
call option transactions are designed to reduce the total return volatility
associated with holding these assets and to yield additional fee income. The
type of risk associated with these transactions is opportunity cost risk. Any
option premium income generated by these transactions is
 
                                       47
<PAGE>   48
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
deferred and recorded upon either the expiration or exercise date of the option.
If the option is exercised by the purchaser, the premium income is recognized as
a component of the gain or loss on the underlying security. If the option
expires unexercised, the premium income is recognized as other non-interest
income. There were no call option agreements outstanding at December 31, 1997.
 
NOTE 12--RESTRICTIONS ON SUBSIDIARY DIVIDENDS, LOANS OR ADVANCES
 
     Under current banking law, the banking subsidiaries of the Company are
limited in the amount of dividends they can pay without obtaining prior approval
from bank regulatory agencies. As of December 31, 1997, approximately
$49,256,000 was available for payment to the Company without regulatory
approval.
 
     The subsidiaries are also limited as to the amount they may loan to the
Company unless such loans are collateralized by U.S. Treasury or agency
securities, a segregated deposit with the subsidiary or other specified
obligations. At December 31, 1997, the maximum amount available for transfer
from the subsidiaries to the Company in the form of loans approximated
$28,257,000.
 
NOTE 13--STOCK INCENTIVE AND EMPLOYEE BENEFIT PLANS
 
     At December 31, 1997, the Company has three stock-based compensation plans
which are described below. Grants under those plans are accounted for following
APB Opinion No. 25 and related interpretations.
 
     STOCK INCENTIVE PLANS. In 1995, stockholders approved the adoption of the
1995 Stock Incentive Plan (Plan). The Plan provides for the ability to grant
stock options, stock appreciation rights, performance units, and stock awards to
key employees. The total number of shares approved and available for issuance
under the Plan in its first year were 2.5% of the total shares of stock
outstanding as of the effective date and 1.5% of outstanding shares in each
subsequent Plan year not to exceed 525,000 in any year. Options to purchase
shares of common stock of the Company and performance units were granted to key
employees pursuant to both the Plan and previous stock incentive plans.
 
     Stock Options. Non-Qualified Stock Options issued generally become
exercisable six months after the date of grant at an option price equal to the
fair market value of the shares on the grant date. The following table presents
certain information with respect to stock options issued pursuant to these
incentive plans. All options outstanding at year end are exercisable.
 
<TABLE>
<CAPTION>
                                                 1997                   1996                   1995
                                          -------------------    -------------------    -------------------
                                                      AVERAGE                AVERAGE                AVERAGE
                                           SHARES      PRICE      SHARES      PRICE      SHARES      PRICE
                                           ------     -------     ------     -------     ------     -------
<S>                                       <C>         <C>        <C>         <C>        <C>         <C>
Options outstanding at beginning of
  year..................................  1,384,017   $11.04     1,139,776   $10.14     1,012,434   $ 9.33
Options granted.........................    295,875    18.50       350,625    13.33       274,164    12.03
Options exercised.......................   (258,602)   10.42       (98,134)    8.60      (146,822)    8.01
Options lapsed..........................    (15,867)   15.80        (8,250)   13.01            --       --
                                          ---------   ------     ---------   ------     ---------   ------
Options outstanding at end of year......  1,405,423   $12.68     1,384,017   $11.04     1,139,776   $10.14
                                          =========   ======     =========   ======     =========   ======
</TABLE>
 
     Performance Units. Performance Units (Units) granted entitle holders to
cash or stock payments if certain long term performance targets are met. The
payout range on all Units granted is $4.45 to $11.11 per unit. In addition, a
dividend is paid on each Unit at a rate equivalent to the rate of dividends paid
on each share of the Company's common stock. The expense related to these Units
for the years ended December 31,
 
                                       48
<PAGE>   49
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
1997, 1996 and 1995 was approximately $60,000, $354,000 and $567,000,
respectively. The following table presents certain information with respect to
issuances pursuant to these plans.
 
<TABLE>
<CAPTION>
                                                     1997                 1996                 1995
                                              ------------------    -----------------    -----------------
                                                         AVERAGE              AVERAGE              AVERAGE
                                               SHARES     PRICE     SHARES     PRICE     SHARES     PRICE
                                               ------    -------    ------    -------    ------    -------
<S>                                           <C>        <C>        <C>       <C>        <C>       <C>
Units outstanding at beginning of year......   336,568       --     330,879       --     315,612       --
Units granted...............................   113,253       --     104,298       --     122,163       --
Units paid..................................  (113,883)   $4.81     (98,609)   $4.45     (97,155)   $4.45
Units forfeited.............................   (53,552)      --           0       --      (9,741)      --
                                              --------    -----     -------    -----     -------    -----
Units outstanding at end of year............   282,386       --     336,568       --     330,879       --
                                              ========    =====     =======    =====     =======    =====
</TABLE>
 
     The following table presents a summary of issuances pursuant to these
incentive plans.
 
<TABLE>
<CAPTION>
                                                 1997                   1996                   1995
                                          -------------------    -------------------    -------------------
                                                      AVERAGE                AVERAGE                AVERAGE
                                           SHARES      PRICE      SHARES      PRICE      SHARES      PRICE
                                           ------     -------     ------     -------     ------     -------
<S>                                       <C>         <C>        <C>         <C>        <C>         <C>
Options outstanding at end of year......  1,405,423   $12.68     1,384,017   $11.04     1,139,776   $10.14
Units outstanding at end of year........    282,386       --       336,568       --       330,879       --
Available to grant under Plan at year
  end...................................     53,814       --        60,446       --       195,810       --
</TABLE>
 
     In accordance with APB Opinion No. 25, no compensation cost has been
recognized for stock option grants to employees issued pursuant to the Plan. Had
compensation cost for these grants been determined based on the grant date fair
values of awards (the method described in FAS No. 123, "Accounting for Stock-
Based Compensation"), reported net income and earnings per common share would
have been reduced to the pro forma amounts shown below:
 
     The fair value of each grant is estimated at the grant date using the
Black-Scholes option-pricing model with the following weighted-average
assumptions for grants in 1997, 1996 and 1995, respectively: dividend rates of
1.79%, 3.20% and 3.14%; price volatility of 69.95%, 21.71% and 33.96%; risk-free
interest rates of 6.64%, 6.34% and 6.22%; and expected lives of 6.5 for all
years.
 
<TABLE>
<CAPTION>
                                                    1997      1996         1995
                                                    ----      ----         ----
                                                           (IN THOUSANDS,
                                                       EXCEPT PER SHARE DATA)
<S>                                                <C>       <C>          <C>
Net Income:
  As reported....................................  $28,664   $31,876      $23,025
  Pro forma......................................   26,690    31,191       22,425
Basic earnings per share:
  As reported....................................  $  1.07   $  1.20      $  0.87
  Pro forma......................................     0.99      1.17         0.85
Diluted earnings per share:
  As reported....................................  $  1.05   $  1.18      $  0.86
  Pro forma......................................     0.97      1.16         0.84
</TABLE>
 
     DIRECTORS' STOCK PLANS. During 1989, the Company adopted the Restricted
Stock Plan for Non-Employee Directors (Stock Plan). The Stock Plan provides that
each current eligible non-employee director and each subsequently elected
non-employee director receive, in lieu of a cash retainer, shares of common
stock of the Company, the fair value of which is equal to three times the annual
retainer. The shares vest annually over a three-year period based upon the
anniversary date of the original award. The expense related to the Stock Plan
for the years ended December 31, 1997, 1996 and 1995 was approximately $370,000,
$467,000 and $280,000, respectively.
 
                                       49
<PAGE>   50
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     In addition, the Company pays a lifetime annual retainer to certain retired
directors. Effective January 1, 1993, the Company adopted FAS No. 106,
"Employers' Accounting for Postretirement Benefits Other Than Pensions" to
account for these benefits. This statement requires employers to recognize
postretirement benefits on an accrual basis rather than on a cash basis. The
expense in 1997, 1996 and 1995 related to this statement was $82,000, $107,000
and $86,000, respectively. The transition obligation, representing the present
value of future payments at the adoption of the statement, was approximately
$842,000 and is being amortized over a twenty year period.
 
     In 1994, stockholders approved the 1994 Stock Option Plan for Non-Employee
Directors (Option Plan). The Option Plan provides that each current eligible
non-employee director and each subsequently elected non-employee director
receive options to purchase common stock of the Company. Each option granted
under the Option Plan will have a ten-year term and will generally become
exercisable twelve months after the grant date at an option price equal to the
fair market value of the shares on the grant date. The following table presents
certain information with respect to stock options issued pursuant to the Option
Plan.
 
<TABLE>
<CAPTION>
                                                    1997                 1996                 1995
                                              -----------------    -----------------    -----------------
                                                        AVERAGE              AVERAGE              AVERAGE
                                              SHARES     PRICE     SHARES     PRICE     SHARES     PRICE
                                              ------    -------    ------    -------    ------    -------
<S>                                           <C>       <C>        <C>       <C>        <C>       <C>
Options outstanding at beginning of year....  130,500   $13.11      63,750   $12.87      13,500   $13.42
Options granted.............................   69,000    18.50      75,000    13.33      51,750   $12.75
Options exercised...........................   (6,000)   13.06          --       --          --       --
Options lapsed..............................     (750)   13.33      (8,250)   13.23      (1,500)   13.42
                                              -------   ------     -------   ------     -------   ------
Options outstanding at end of year..........  192,750   $19.67     130,500   $13.11      63,750   $12.87
                                              =======   ======     =======   ======     =======   ======
Available to grant under Plan at year end...  101,250       --     169,500       --     236,250       --
                                              =======   ======     =======   ======     =======   ======
</TABLE>
 
     OPTIONS SUMMARY. The following table presents certain information with
respect to issuances of stock options pursuant to all plans discussed above:
 
<TABLE>
<CAPTION>
                                                                           OPTIONS OUTSTANDING AND EXERCISABLE
                                                                    -------------------------------------------------
                                                                                  WEIGHTED-AVERAGE
                                                                      NUMBER         REMAINING       WEIGHTED-AVERAGE
RANGE OF EXERCISE PRICES                                            OUTSTANDING   CONTRACTUAL LIFE    EXERCISE PRICE
- ------------------------                                            -----------   ----------------   ----------------
<C>                         <S>                                     <C>           <C>                <C>
     $ 5.00 -  7.80         ......................................    240,739           3.0years          $ 6.88
       9.75 - 11.70         ......................................    199,525           4.8                10.11
      11.70 - 13.65         ......................................    806,300           6.9                13.07
      17.55 - 19.50         ......................................    351,609           9.2                18.52
</TABLE>
 
     EMPLOYEE BENEFIT PLANS. All subsidiaries of the Company participate in the
AMCORE Financial Security Plan (Security Plan), a qualified profit sharing plan
under Section 401(a) of the Internal Revenue Code. The Security Plan offers
participants a personal retirement account, profit sharing account and personal
savings account [401(k)]. The expense related to the Security Plan and other
similar plans from FSB and NBA for the years ended December 31, 1997, 1996 and
1995 was approximately $2,763,000, $3,248,000 and $2,374,000, respectively.
 
     In addition to the Security Plan, certain health care and life insurance
benefits are made available to active employees. The cost of these benefits is
expensed as incurred.
 
                                       50
<PAGE>   51
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 14--INCOME TAXES
 
     The components of income tax expense were as follows:
 
<TABLE>
<CAPTION>
                                                                     YEARS ENDED DECEMBER 31,
                                                                -----------------------------------
                                                                 1997          1996          1995
                                                                 ----          ----          ----
                                                                          (IN THOUSANDS)
<S>                                                             <C>           <C>           <C>
Currently paid or payable...................................    $12,735       $12,293       $ 8,947
Deferred....................................................     (3,817)         (132)       (1,742)
                                                                -------       -------       -------
          TOTAL.............................................    $ 8,918       $12,161       $ 7,205
                                                                =======       =======       =======
</TABLE>
 
     The effective tax rates on income for 1997, 1996, and 1995 were 23.7%,
27.6% and 23.8%, respectively. Income tax expense was less than the amounts
computed by applying the federal statutory rate of 35% due to the following:
 
<TABLE>
<CAPTION>
                                                                     YEARS ENDED DECEMBER 31,
                                                                -----------------------------------
                                                                 1997          1996          1995
                                                                 ----          ----          ----
                                                                          (IN THOUSANDS)
<S>                                                             <C>           <C>           <C>
Income tax at statutory rate................................    $13,154       $15,413       $10,581
Increase (decrease) resulting from:
  Tax-exempt income.........................................     (5,027)       (4,718)       (4,298)
  State income taxes, net of federal benefit................       (301)        1,346           785
  Non-deductible expenses, net..............................      1,581           356           546
  Other, net................................................       (489)         (236)         (409)
                                                                -------       -------       -------
          TOTAL.............................................    $ 8,918       $12,161       $ 7,205
                                                                =======       =======       =======
</TABLE>
 
     The tax effects of existing temporary differences that give rise to
significant portions of the deferred tax liabilities and deferred tax assets are
as follows:
 
<TABLE>
<CAPTION>
                                                                   AT DECEMBER 31,
                                                                ---------------------
                                                                 1997          1996
                                                                 ----          ----
                                                                   (IN THOUSANDS)
<S>                                                             <C>           <C>
Deferred tax assets:
  Deferred compensation.....................................    $ 4,094       $ 3,936
  Securities................................................         --         1,085
  Allowance for loan and lease losses.......................      7,784         6,664
  Other.....................................................      4,257           529
                                                                -------       -------
     Total deferred tax assets..............................    $16,135       $12,214
                                                                -------       -------
Deferred tax liabilities:
  Securities................................................    $ 5,895            --
  Premises and equipment....................................      4,946         5,571
  Other.....................................................      4,167         2,458
                                                                -------       -------
     Total deferred tax liabilities.........................    $15,008       $ 8,029
                                                                -------       -------
     TOTAL DEFERRED TAX ASSET...............................      1,127         4,185
Less: Tax effect of net unrealized (gain) loss on securities
     available for sale reflected in stockholders' equity...     (5,496)        1,379
                                                                -------       -------
     NET DEFERRED TAX ASSET.................................    $ 6,623       $ 2,806
                                                                =======       =======
</TABLE>
 
No valuation allowance was considered necessary.
 
                                       51
<PAGE>   52
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 15--EARNINGS PER SHARE
 
     In 1997, the Financial Accounting Standards Board issued Statement No. 128,
"Earnings per Share" (FAS No. 128). FAS No. 128 replaced the calculation of
primary and fully diluted earnings per share with basic and diluted earnings per
share. Unlike primary earnings per share, basic earnings per share excludes any
dilutive effects of options, warrants and convertible securities. Diluted
earnings per share is very similar to the previously reported fully diluted
earnings per share. All earnings per share amounts for all periods have been
presented, and where appropriate, restated to conform to the FAS No. 128
requirements.
 
     Basic earnings per share is computed by dividing net income for the year by
the weighted average number of shares outstanding of 26,862,000, 26,649,000 and
26,504,000 for 1997, 1996 and 1995, respectively.
 
     Diluted earnings per share is determined by dividing net income for the
year by the weighted average number of shares of common stock and common stock
equivalents outstanding. Common stock equivalents assume exercise of stock
options and use of proceeds to purchase treasury stock at the average market
price for the period. The weighted average shares outstanding were 27,405,000,
26,987,000 and 26,856,000 for 1997, 1996 and 1995, respectively.
 
NOTE 16--CAPITAL REQUIREMENTS
 
     The Company and its banking subsidiaries (Regulated Companies) are subject
to various regulatory capital requirements administered by the federal banking
agencies. Failure to meet 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, the Regulated Companies must meet
specific capital guidelines that involve quantitative measures of their assets,
liabilities, and certain off-balance-sheet items as calculated under regulatory
accounting practices. Their capital amounts and classification are also subject
to qualitative judgments by the regulators about components, risk weightings,
and other factors.
 
     Quantitative measures established by regulation to ensure capital adequacy
require the Regulated Companies to maintain minimum amounts and ratios (set
forth in the table below) of total and Tier I capital to risk-weighted assets,
and of Tier I capital to average assets. Management believes, as of December 31,
1997, that the Regulated Companies meet all capital adequacy requirements to
which it is subject.
 
     As of December 31, 1997, the most recent notification from the Office of
the Comptroller of the Currency categorized the Regulated Companies as well
capitalized under the regulatory framework for prompt corrective action. To be
categorized as well capitalized a company must maintain minimum total risk-
based, Tier I risk based and Tier I leverage ratios as set forth in the table.
There are no conditions or events since that notification that management
believes have changed the Regulated Companies category.
 
                                       52
<PAGE>   53
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
     The Company's and each significant subsidiary's actual capital amounts and
ratios are presented in the table.
 
<TABLE>
<CAPTION>
                                                                             FOR CAPITAL ADEQUACY PURPOSES
                                                                        ---------------------------------------
                                                        ACTUAL               MINIMUM          WELL CAPITALIZED
                                                   -----------------    -----------------    ------------------
                                                    AMOUNT     RATIO     AMOUNT     RATIO     AMOUNT     RATIO
                                                    ------     -----     ------     -----     ------     -----
<S>                                                <C>         <C>      <C>         <C>      <C>         <C>
As of December 31, 1997:
  Total Capital (to Risk Weighted Assets):
    CONSOLIDATED...............................    $326,271    14.38%   $181,574     >=8.00% $226,938    >=10.00%
                                                                                     
    AMCORE Bank N.A. Rockford..................     118,710    11.11      85,493     >=8.00   106,866    >=10.00
    AMCORE Bank N.A. Rock River Valley.........      55,270    14.61      30,267     >=8.00    37,834    >=10.00
  Tier 1 Capital (to Risk Weighted Assets):                                                                
    CONSOLIDATED...............................    $306,364    13.50%   $ 90,775     >=4.00% $136,163    >=6.00%
    AMCORE Bank N.A. Rockford..................     110,717    10.36      42,747     >=4.00    64,120    >=6.00
    AMCORE Bank N.A. Rock River Valley.........      51,731    13.67      15,134     >=4.00    22,700    >=6.00
  Tier 1 Capital (to Average Assets):                                                                      
    CONSOLIDATED...............................    $306,364     8.31%   $147,388     >=4.00% $184,235    >=5.00%
    AMCORE Bank N.A. Rockford..................     110,717     6.82      64,934     >=4.00    81,167    >=5.00
    AMCORE Bank N.A. Rock River Valley.........      51,731     7.65      27,044     >=4.00    33,806    >=5.00
As of December 31, 1996:                                                                                   
  Total Capital (to Risk Weighted Assets):                                                                 
    CONSOLIDATED...............................    $265,565    13.04%   $162,917     >=8.00% $203,647    >=10.00%
    AMCORE Bank N.A. Rockford..................      97,304    10.40      74,822     >=8.00    93,527    >=10.00
    AMCORE Bank N.A. Rock River Valley.........      51,202    14.88      27,526     >=8.00    34,407    >=10.00
  Tier 1 Capital (to Risk Weighted Assets):                                                                
    CONSOLIDATED...............................    $246,250    12.09%   $ 81,459     >=4.00% $122,188    >=6.00%
    AMCORE Bank N.A. Rockford..................      89,966     9.62      37,411     >=4.00    56,116    >=6.00
    AMCORE Bank N.A. Rock River Valley.........      47,968    13.94      13,763     >=4.00    20,644    >=6.00
  Tier 1 Capital (to Average Assets):                                                                      
    CONSOLIDATED...............................    $246,250     7.44%   $132,425     >=4.00% $165,531    >=5.00%
    AMCORE Bank N.A. Rockford..................      89,966     6.14      58,649     >=4.00    73,311    >=5.00
    AMCORE Bank N.A. Rock River Valley.........      47,968     8.52      22,519     >=4.00    28,149    >=5.00
</TABLE>
 
                                       53
<PAGE>   54
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
NOTE 17--CONDENSED FINANCIAL INFORMATION OF PARENT COMPANY
 
                    CONDENSED PARENT COMPANY BALANCE SHEETS
 
<TABLE>
<CAPTION>
                                                                  DECEMBER 31,
                                                              --------------------
                                                                1997        1996
                                                                ----        ----
                                                                 (IN THOUSANDS)
<S>                                                           <C>         <C>
ASSETS
Cash and cash equivalents...................................  $    955    $    230
Securities available for sale...............................       431         269
Securities held to maturity.................................        --         107
Short-term investments......................................    10,000       2,000
Due from subsidiaries.......................................       933       1,188
Loans to financial services subsidiaries....................    22,763      26,209
Investment in bank subsidiaries.............................   285,374     246,034
Investment in financial services subsidiaries...............     6,049       8,551
Premises and equipment, net.................................     2,888       2,791
Other assets................................................     8,008       5,073
                                                              --------    --------
  TOTAL ASSETS..............................................  $337,401    $292,452
                                                              --------    --------
LIABILITIES AND STOCKHOLDERS' EQUITY
LIABILITIES
Short-term borrowings.......................................  $     --    $ 14,455
Long-term borrowings........................................    43,168      15,831
Other liabilities...........................................     6,757       4,746
                                                              --------    --------
  TOTAL LIABILITIES.........................................  $ 49,925      35,032
                                                              --------    --------
STOCKHOLDERS' EQUITY
Preferred stock.............................................  $     --    $     --
Common stock................................................     6,152       6,152
Additional paid-in capital..................................    73,262      67,363
Retained earnings...........................................   206,235     191,484
Treasury stock and other....................................    (6,547)     (5,623)
Net unrealized gain (loss) on securities available for sale,
  net of taxes..............................................     8,374      (1,956)
                                                              --------    --------
  TOTAL STOCKHOLDERS' EQUITY................................  $287,476    $257,420
                                                              --------    --------
  TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY................  $337,401    $292,452
                                                              ========    ========
</TABLE>
 
                                       54
<PAGE>   55
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
                 CONDENSED PARENT COMPANY STATEMENTS OF INCOME
 
<TABLE>
<CAPTION>
                                                                YEARS ENDED DECEMBER 31,
                                                              -----------------------------
                                                               1997       1996       1995
                                                               ----       ----       ----
                                                                     (IN THOUSANDS)
<S>                                                           <C>        <C>        <C>
Income:
  Dividends from subsidiaries...............................  $17,749    $21,492    $14,740
  Interest income...........................................    2,284      1,260        484
  Management fees and other.................................   21,436     18,833     11,434
                                                              -------    -------    -------
     TOTAL INCOME...........................................  $41,469    $41,585    $26,658
                                                              -------    -------    -------
Expenses:
  Interest expense..........................................  $ 3,801    $ 2,090    $ 1,909
  Compensation expense and employee benefits................   14,455     12,846     10,187
  Professional fees.........................................    2,540      1,192      1,058
  Other.....................................................   12,388      8,871      6,917
                                                              -------    -------    -------
     TOTAL EXPENSES.........................................  $33,184    $24,999    $20,071
                                                              -------    -------    -------
Income before income tax benefits and equity in
  undistributed net income of subsidiaries..................  $ 8,285    $16,586    $ 6,587
  Income tax benefits.......................................   (3,231)    (2,195)    (3,592)
                                                              -------    -------    -------
Income before equity in undistributed net income of
  subsidiaries..............................................  $11,516    $18,781    $10,179
Equity in undistributed net income of subsidiaries..........   17,148     13,095     12,846
                                                              -------    -------    -------
     NET INCOME.............................................  $28,664    $31,876    $23,025
                                                              =======    =======    =======
</TABLE>
 
                                       55
<PAGE>   56
                    AMCORE FINANCIAL, INC. AND SUBSIDIARIES
 
           NOTES TO CONSOLIDATED FINANCIAL STATEMENTS -- (CONTINUED)
 
               CONDENSED PARENT COMPANY STATEMENTS OF CASH FLOWS
 
<TABLE>
<CAPTION>
                                                                    YEARS ENDED DECEMBER 31,
                                                              ------------------------------------
                                                                1997          1996          1995
                                                                ----          ----          ----
                                                                         (IN THOUSANDS)
<S>                                                           <C>           <C>           <C>
CASH FLOWS FROM OPERATING ACTIVITIES
Net income..................................................  $ 28,664      $ 31,876      $ 23,025
Adjustments to reconcile net income to net cash provided by
  operating activities:
     Depreciation and amortization..........................     1,531         1,026           837
     Non-employee directors compensation expense............       370           467           280
     Equity in undistributed net income of subsidiaries.....   (17,148)      (13,095)      (12,846)
     (Increase) decrease in due from subsidiaries...........       255          (831)          247
     (Increase) decrease in other assets....................    (2,935)          184          (553)
     Increase (decrease) in other liabilities...............     2,011        (1,089)        3,269
     Other, net.............................................       560           471           393
                                                              --------      --------      --------
          NET CASH PROVIDED BY OPERATING ACTIVITIES.........  $ 13,308      $ 19,009      $ 14,652
CASH FLOWS FROM INVESTING ACTIVITIES
Purchase of securities......................................   (14,071)         (345)         (101)
Proceeds from maturities of securities......................    14,197           101            30
Net (increase) decrease in short term investments...........    (8,000)       (2,000)        1,000
Dissolution of less-active state banking charters...........        96            --         2,000
Proceeds from sale of collection agency.....................       700            --            --
Net investment made in subsidiaries.........................   (10,788)           --        (1,000)
Loans to subsidiaries.......................................   (13,470)      (24,364)       (5,748)
Payments received on loans to subsidiaries..................    16,916         7,343           780
Transfer of premises and equipment to (from) affiliates.....      (114)        1,218            --
Premises and equipment expenditures.........................    (1,514)       (1,234)       (1,819)
                                                              --------      --------      --------
          NET CASH REQUIRED FOR INVESTING ACTIVITIES........  $(16,048)     $(19,281)     $ (4,858)
                                                              --------      --------      --------
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase (decrease) in short-term borrowings............   (14,455)       11,305         3,150
Proceeds from long-term borrowings..........................    41,238            --            --
Payment of long-term borrowings.............................   (14,044)       (3,844)       (5,444)
Dividends paid..............................................   (12,130)       (9,096)       (8,199)
Proceeds from the sale of common stock......................       430            --            --
Proceeds from exercise of incentive stock options...........     3,753           844         1,234
Purchase of treasury stock..................................    (1,327)           --            --
                                                              --------      --------      --------
          NET CASH PROVIDED BY (REQUIRED FOR) FINANCING
            ACTIVITIES......................................  $  3,465      $   (791)     $ (9,259)
                                                              --------      --------      --------
Net change in cash and cash equivalents.....................  $    725      $ (1,063)     $    535
Cash and cash equivalents:
  Beginning of year.........................................       230         1,293           758
                                                              --------      --------      --------
  End of period.............................................  $    955      $    230      $  1,293
                                                              ========      ========      ========
</TABLE>
 
                                       56
<PAGE>   57
 
                          INDEPENDENT AUDITOR'S REPORT
 
To the Board of Directors and Stockholders
AMCORE Financial, Inc.
Rockford, Illinois
 
     We have the audited the accompanying consolidated balance sheets of AMCORE
Financial, Inc. and subsidiaries as of December 31, 1997 and 1996, and the
related consolidated statements of income, stockholders' equity, and cash flows
for each of the years in the three year period ended December 31, 1997. These
financial statements are the responsibility of the Company's management. Our
responsibility is to express an opinion on these financial statements based on
our audits.
 
     We conducted our audits in accordance with generally accepted auditing
standards. Those standards require that we plan and perform the audit to obtain
reasonable assurance about whether the financial statements are free from
material misstatement. An audit includes examining, on a test basis, evidence
supporting the amounts and disclosures in the financial statements. An audit
also includes assessing the accounting principles used and significant estimates
made by management, as well as evaluating the overall financial statement
presentation. We believe that our audits provide a reasonable basis for our
opinion.
 
     In our opinion, the consolidated financial statements referred to above
present fairly, in all material respects, the financial position of AMCORE
Financial, Inc. and subsidiaries as of December 31, 1997 and 1996, and the
results of their operations and their cash flows for each of the years in the
three year period ended December 31, 1997, in conformity with generally accepted
accounting principles.
 
                                          [ LOGO ]

                                                   McGladrey & Pullen, LLP
 
Rockford, Illinois
January 19, 1998
 
                                       57
<PAGE>   58
 
         CONDENSED QUARTERLY EARNINGS & STOCK PRICE SUMMARY (UNAUDITED)
 
<TABLE>
<CAPTION>
                                                1997                                          1996
                              ----------------------------------------      ----------------------------------------
                               FIRST     SECOND      THIRD     FOURTH        FIRST     SECOND      THIRD     FOURTH
                              QUARTER    QUARTER    QUARTER    QUARTER      QUARTER    QUARTER    QUARTER    QUARTER
                              -------    -------    -------    -------      -------    -------    -------    -------
                                                      (IN THOUSANDS, EXCEPT PER SHARE DATA)
<S>                           <C>        <C>        <C>        <C>          <C>        <C>        <C>        <C>
Interest income.............  $61,274    $63,333    $68,130    $68,770      $54,432    $58,413    $60,637    $61,554
Interest expense............   33,926     35,523     39,666     39,845       29,102     32,051     33,517     34,232
                              -------    -------    -------    -------      -------    -------    -------    -------
Net interest income.........  $27,348    $27,810    $28,464    $28,925      $25,330    $26,362    $27,120    $27,322
Provision for loan losses...    1,915      1,936      2,673        521          993      1,066      2,296      1,073
Other income................   11,989     10,290     11,074     14,355        9,821      9,888     12,023     10,538
Other expense...............   26,034     33,792     24,704     31,098       24,625     24,386     25,265     24,663
                              -------    -------    -------    -------      -------    -------    -------    -------
Income before income
  taxes.....................  $11,388    $ 2,372    $12,161    $11,661      $ 9,533    $10,798    $11,582    $12,124
Income taxes................    3,149        340      3,114      2,315        2,635      3,038      3,257      3,231
                              -------    -------    -------    -------      -------    -------    -------    -------
Net Income..................  $ 8,239    $ 2,032    $ 9,047    $ 9,346      $ 6,898    $ 7,760    $ 8,325    $ 8,893
                              =======    =======    =======    =======      =======    =======    =======    =======
Per share data:
Basic earnings..............  $  0.31    $  0.07    $  0.34    $  0.35      $  0.26    $  0.29    $  0.31    $  0.34
Diluted earnings............  $  0.31    $  0.07    $  0.33    $  0.34      $  0.26    $  0.29    $  0.30    $  0.33
Dividends...................     0.10       0.11       0.12       0.12         0.09       0.10       0.08       0.11
Stock price ranges-high.....    19.50      19.33      24.00      25.94        14.50      14.17      14.17      18.17
                 -low.......    15.33      17.17      18.50      22.00        13.50      13.00      12.58      13.58
                 -close.....    18.83      18.17      22.75      25.13        13.91      13.17      13.67      17.83
</TABLE>
 
- ---------------
Quotes have been obtained from the National Association of Security Dealers.
These quotes do not reflect retail mark-ups, mark-downs or commissions nor are
they necessarily representative of actual transactions.
 
ITEM 9. CHANGES IN AND DISAGREEMENTS WITH ACCOUNTANTS ON ACCOUNTING AND
FINANCIAL DISCLOSURE
 
     None
 
                                    PART III
 
ITEM 10. DIRECTORS AND EXECUTIVE OFFICERS OF THE REGISTRANT
 
     (a) Directors of the Registrant. The Proxy Statement and Notice of 1998
Annual Meeting dated March 26, 1998 is incorporated herein by reference.
 
     (b) Executive Officers of the Registrant. The information is presented in
Item 1 of this document.
 
ITEM 11. EXECUTIVE COMPENSATION
 
     The Proxy Statement and Notice of 1998 Annual Meeting dated March 26, 1998
is incorporated herein by reference.
 
ITEM 12. SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS AND MANAGEMENT
 
     The Proxy Statement and Notice of 1998 Annual Meeting dated March 26, 1998
is incorporated herein by reference.
 
ITEM 13. CERTAIN RELATIONSHIPS AND RELATED TRANSACTIONS
 
     The Proxy Statement and Notice of 1998 Annual Meeting dated March 26, 1998
is incorporated herein by reference.
 
                                       58
<PAGE>   59
 
                                    PART IV
 
ITEM 14. EXHIBITS, FINANCIAL STATEMENT SCHEDULES AND REPORTS ON FORM 8-K
 
     (a)1. FINANCIAL STATEMENTS
 
     The following Consolidated Financial Statements of AMCORE are filed as a
part of this document under Item 8. Financial Statements and Supplementary Data.
 
     Consolidated Balance Sheets--December 31, 1997 and 1996
 
     Consolidated Statements of Income for the years ended December 31, 1997,
1996 and 1995
 
     Consolidated Statements of Stockholders' Equity for the years ended
December 31, 1997, 1996 and 1995
 
     Consolidated Statements of Cash Flows for the years ended December 31,
1997, 1996 and 1995
 
     Notes to Consolidated Financial Statements
 
     Independent Auditors' Report
 
     (a)2. FINANCIAL STATEMENT SCHEDULES
 
     All financial statement schedules have been included in the consolidated
financial statements or are either not applicable or not significant.
 
     (a)3. EXHIBITS
 
<TABLE>
       <S>     <C>
        3.     Amended and Restated Articles of Incorporation of AMCORE
               Financial, Inc. dated May 1, 1990 (Incorporated by reference
               to Exhibit 23 of AMCORE's Annual Report on Form 10-K for the
               year ended December 31, 1989).
        3.1    By-laws of AMCORE Financial, Inc. as amended May 17, 1990
               (Incorporated by reference to Exhibit 3.1 of AMCORE's Annual
               Report on Form 10-K for the year ended December 31, 1994).
        4      Rights Agreement dated February 21, 1996, between AMCORE
               Financial, Inc. and Firstar Trust Company (Incorporated by
               reference to AMCORE's Form 8-K as filed with the Commission
               on February 28, 1996).
       10.1    1995 Stock Incentive Plan (Incorporated by reference to
               Exhibit 22 of AMCORE's Annual Report on Form 10-K for the
               year ended December 31, 1994).
       10.2    AMCORE Financial, Inc. 1994 Stock Option Plan for
               Non-Employee Directors (Incorporated by reference to Exhibit
               23 of AMCORE's Annual Report on Form 10-K for the year ended
               December 31, 1993).
       10.3A   Amended and Restated Transitional Compensation Agreement
               dated June 1, 1996 between AMCORE Financial, Inc. and Robert
               J. Meuleman. (Incorporated by reference to Exhibit 10.3A of
               AMCORE's Quarterly Report on Form 10-Q for the quarter ended
               June 30, 1996.)
       10.3B   Amended and Restated Transitional Compensation Agreement
               dated June 1, 1996 between AMCORE Financial, Inc. and the
               following individuals: John R. Hecht, and James S. Waddell.
               (Incorporated by reference to Exhibit 10.3B of AMCORE's
               Quarterly Report on Form 10-Q for the quarter ended June 30,
               1996.)
       10.3C   Transitional Compensation Agreement dated June 1, 1996
               between AMCORE Financial, Inc. and Charles E. Gagnier.
               (Incorporated by reference to Exhibit 10.3C of AMCORE's
               Quarterly Report on Form 10-Q for the quarter ended June 30,
               1996.)
</TABLE>
 
                                       59
<PAGE>   60
<TABLE>
       <S>     <C>
       10.3D   Transitional Compensation Agreement dated June 1, 1996
               between AMCORE Financial, Inc. and the following
               individuals: William J. Hippensteel, Alan W. Kennebeck and
               James F. Warsaw. (Incorporated by reference to Exhibit 10.3D
               of AMCORE's Quarterly Report on Form 10-Q for the quarter
               ended June 30, 1996.)
       10.3E   Transitional Compensation Agreement dated May 21, 1997
               between AMCORE Financial, Inc. and Kenneth E. Edge.
               (Incorporated by reference to Exhibit 10.3E of AMCORE's
               Quarterly Report on Form 10-Q for the quarter ended
               September 30, 1997.)
       10.3F   Transitional compensation Agreement dated May 21, 1997
               between AMCORE Financial, Inc. and Charlie A. Zanck.
               (Incorporated by reference to Exhibit 10.3F of AMCORE's
               Quarterly Report on Form 10-Q for the quarter ended
               September 30, 1997.)
       10.4    Commercial Paper Placement Agreement dated November 10, 1995
               with M&I Marshall and Ilsley Bank (Incorporated by reference
               to Exhibit 10.6 to AMCORE's Annual Report on Form 10-K for
               the year ended December 31, 1995).
       10.5A   Executive Insurance Agreement dated March 1, 1996 between
               AFI and the following executives: Robert J. Meuleman and
               James S. Waddell (Incorporated by reference to Exhibit 10.6
               of AMCORE's Quarterly Report on Form 10-Q for the quarter
               ended March 31, 1996).
       10.5B   Executive Insurance Agreement dated May 21, 1997 between AFI
               and Kenneth E. Edge. (Incorporated by reference to Exhibit
               10.5B of AMCORE's Quarterly Report on Form 10-Q for the
               quarter ended September 30, 1997.)
       10.6    Indenture, dated as of March 25, 1997, between the Company
               and The First National Bank of Chicago (incorporated herein
               by reference to Exhibit 4.1 of the Company's registration
               statement on Form S-4, Registration No. 333-25375).
       10.7    Form of New Guarantee between the Company and The First
               National Bank of Chicago (incorporated herein by reference
               to Exhibit 4.7 of the Company's registration statement on
               Form S-4, Registration No. 333-25375).
       10.8    First Amendment to Loan Agreement with M & I Marshall and
               Ilsley Bank dated November 9, 1996. (Incorporated by
               reference to Exhibit 10.8 of AMCORE's Quarterly Report on
               Form 10-Q for the quarter ended September 30, 1997.)
       10.9    Second Amendment to Loan Agreement with M & I Marshall and
               Ilsley Bank dated September 29, 1997. (Incorporated by
               reference to Exhibit 10.9 of AMCORE's Quarterly Report on
               Form 10-Q for the quarter ended September 30, 1997.)
       13      1997 Summary Annual Report to Stockholders.
       21      Subsidiaries of the Registrant
       22      Proxy Statement and Notice of 1998 Annual Meeting
       24      Powers of Attorney
       27      Financial Data Schedule
</TABLE>
 
     (b) One report on Form 8-K was filed with the Commission and dated March 4,
1998 announcing the acquisition of Investors Management Group, Ltd.
(Incorporated by reference to AMCORE's Form 8-K as filed with the Commission on
March 4, 1998.)
 
                                       60
<PAGE>   61
 
                                   SIGNATURES
 
     Pursuant to the requirements of Section 13 or 15(d) of the Securities Act
of 1934, the Registrant has duly caused this report to be signed on its behalf
by the undersigned, thereunto duly authorized, in the City of Rockford, State of
Illinois, on this 26th day of March 1998.
 
                                                         AMCORE FINANCIAL, INC.
 
                                          By:               John
                                                           Hecht
 
                                            ------------------------------------
                                            John R. Hecht
                                            Executive Vice President and Chief
                                              Financial Officer
 
     Pursuant to the requirements of the Securities Act of 1934, this report has
been signed below on the 26th day of March, 1998 by the following persons on
behalf of the Registrant in the capacities indicated.
 
<TABLE>
<CAPTION>
                        NAME                                                   TITLE
                        ----                                                   -----
<C>                                                        <S>
 
                   Robert Meuleman
- -----------------------------------------------------      President and Chief Executive Officer
                 Robert J. Meuleman                          (principal executive officer)
 
                     John Hecht
- -----------------------------------------------------      Executive Vice President and Chief Financial
                    John R. Hecht                            Officer
                                                             (principal financial officer and principal
                                                             accounting officer)
</TABLE>
 
Directors: Milton R. Brown, Carl J. Dargene, Richard C. Dell, Robert A. Doyle,
           Lawrence E. Gloyd, John A. Halbrook, Frederick D. Hay, William R.
           McManaman, Robert J. Meuleman, Ted Ross, Robert J. Smuland, Jack D.
           Ward and Gary L. Watson
 
                                       61
 
<TABLE>
<C>                                                        <S>
                   Robert Meuleman
- -----------------------------------------------------
                 Robert J. Meuleman*
 
                     JOHN HECHT
- -----------------------------------------------------
                   John R. Hecht*
</TABLE>
 
- ------------
* Attorney in Fact*
 
                                       62

<PAGE>   1
- -

                          SUMMARY ANNUAL REPORT 1997








            The New Chemistry of Success By AMCORE Financial, Inc.
                                      
                              amcore financial











<PAGE>   2
What is the secret to AMCORE Financial's success? Chemistry.  The synergistic
combination of elements into a whole that is greater than the sum of its parts.
1997 has been a "landmark" year in which AMCORE became a true multi-state
institution. We are the tenth largest commercial bank in both Illinois and
Wisconsin. And, with the acquisition of Iowa's largest independent asset 
manager, Investors Management Group, we are now among the top 15% of asset 
managers in the country.

<PAGE>   3

        AMCORE Financial, Inc. is a northern Illinois-based bank holding
company with assets of $3.7 billion. Its holdings include ten subsidiary banks
operating in 57 locations. The company also has four primary financial services
subsidiaries: AMCORE Investment Group, N.A., which provides a full range of
trust, investment management, and brokerage services; AMCORE Mortgage, Inc.;
AMCORE Consumer Finance Company, Inc.; and AMCORE Insurance Group, Inc. AMCORE
common stock is listed on NASDAQ under the symbol "AMFI." Further information
about AMCORE can be found on our website at: http://www.AMCORE.com.
     
                                     RKFD
                                       
                                      IL
                                       
                                      1
                                       
        Diluted earnings per share were $1.05 in 1997, which included $0.24 of
merger and outsourcing related charges. The $1.29 per share from operations is
a 9.3 percent increase from the $1.18 reported for 1996. Dividends per share
totaled 45 cents, which represents an 18.4 percent annual growth rate for 1997
and the last five years.

        Book value per share ended 1997 at $10.68 and has increased 39.6
percent over the last five years. Average assets totaled $3.52 billion during
1997, an increase of 10.6 percent over 1996, and have grown at an annual rate
of 10.2 percent over the last five years. 

<TABLE>     
<CAPTION>       
                                1997       1996       1995      1994      1993
<S>                             <C>        <C>        <C>       <C>       <C>
Diluted Earnings Per Share      1.05       1.18       0.86      0.96      0.97
</TABLE>

Diluted Earnings Per Share
$1.05 in 1997
The grey line in 1997 and 1995 represents the adjustment made for merger and
other charges.
                                                                              
<PAGE>   4



<TABLE>
<CAPTION>
(in thousands, except per share data)             1997             1996      % Change
- ---------------------------------------------------------------------------------------
<S>                                         <C>             <C>               <C>
Operating Results:                           
- ---------------------------------------------------------------------------------------
  Net interest income                       $  112,547      $   106,134         6.04%
- ---------------------------------------------------------------------------------------
  Provision for loan and lease losses            7,045            5,428        29.79
- ---------------------------------------------------------------------------------------
  Non-interest income                           47,708           42,270        12.86
- ---------------------------------------------------------------------------------------
  Operating expense                            115,628           98,939        16.87
- ---------------------------------------------------------------------------------------
  Income taxes                                   8,918           12,161       -26.67
========================================================================================
  Net Income                                $   28,664      $    31,876       -10.08
========================================================================================                                
- ---------------------------------------------------------------------------------------
  Basic earnings per share                  $     1.07      $      1.20       -10.83%
- ---------------------------------------------------------------------------------------
  Diluted earnings per share                      1.05             1.18       -11.02
- ---------------------------------------------------------------------------------------
  Dividends per share                             0.45             0.38        18.42
- ---------------------------------------------------------------------------------------
  Average shares outstanding                    26,862           26,649         0.80
- ---------------------------------------------------------------------------------------
Performance Ratios: 
- ---------------------------------------------------------------------------------------
  Return on average equity (1)                   10.66%           13.14%       -2.48%
- ---------------------------------------------------------------------------------------
  Return on average assets (1)                    0.81             1.00        -0.19
- ---------------------------------------------------------------------------------------
  Net interest margin                             3.64             3.81        -0.17
- ---------------------------------------------------------------------------------------
  Core interest margin                            4.14             4.25        -0.11
- ---------------------------------------------------------------------------------------
  Total capital ratio                            14.38            13.04         1.34
- ---------------------------------------------------------------------------------------
  Leverage ratio                                  8.31             7.44         0.87
- ---------------------------------------------------------------------------------------

- ---------------------------------------------------------------------------------------
Year End Balances:                                      
- ---------------------------------------------------------------------------------------
  Total assets                              $3,667,690      $ 3,331,995        10.07%
- ---------------------------------------------------------------------------------------
  Loans and leases, net of unearned income   1,962,674        1,807,121         8.61
- ---------------------------------------------------------------------------------------
  Deposits                                   2,527,043        2,351,490         7.47
- ---------------------------------------------------------------------------------------
  Stockholder's equity                         287,476          257,420        11.68
- ---------------------------------------------------------------------------------------
Stock Price Information at Year End:                    
- ---------------------------------------------------------------------------------------
  Book value per share                          $10.68      $      9.64        10.79%
- ---------------------------------------------------------------------------------------
  Market value per share                         25.13            17.83        40.94
- ---------------------------------------------------------------------------------------
</TABLE>                                                         

                                                                              
                                                                              
(1)  The 1997 ratios excluding the impact of the $6.4 million, or $.24 per
share, after-tax merger related and information systems charges: return on
average equity 13.05%; return on average assets 1.00%

        F  I   N   A   N   C
         
   ***- A  M   C   O   R   E -***
                                       
        I  A   L,  I   N   C                               
                                                            

                             DIVIDENDS PER SHARE
                                $0.45 in 1997
                                 
<TABLE>     
<CAPTION>       
                                1997       1996       1995      1994      1993
<S>                             <C>        <C>        <C>       <C>       <C>
Dividends Per Share            $0.45      $0.38      $0.33     $0.31     $0.23
</TABLE>
       
                             BOOK VALUE PER SHARE
                                $10.68 in 1997

<TABLE>     
<CAPTION>       
                                1997       1996       1995      1994      1993
<S>                             <C>        <C>        <C>       <C>       <C>
Book Value Per Share           $10.68     $9.64      $9.10     $8.03     $7.65
</TABLE>

       

                             TOTAL AVERAGE ASSETS
                               $3,520.2 in 1997
                                (in Millions)

<TABLE>     
<CAPTION>       
                                1997          1996        1995         1994        1993
<S>                             <C>         <C>        <C>         <C>           <C>
Total Average Assets         $3,520,229   $3,181,646   $2,715,520   $2,504,516   $2,387,674
</TABLE>

       
<PAGE>   5
                                   SUCCESS
                                       
                                      A
                                       
                                 acquisition
                                       
                                      I
                                       
                                 integration

                                      T
                                       
                                  technology
                                       
                                      D
                                       
                               diversification
                                       
          Robert J. Meuleman, President and Chief Executive Officer

<PAGE>   6

                                       
                             Vision of the Future
                                       
FELLOW SHAREHOLDERS:    

        I'm pleased to report your company had an excellent year in 1997. Our
success directly contributed to the advancement of one of our major goals --
increasing shareholder value.

        We accomplished important objectives and we addressed difficult issues.
Here are some highlights:


* WE ENTERED NEW MARKETS AND BECAME A THREE-STATE INSTITUTION.
* WE INCREASED OUR ASSET SIZE 30 PERCENT TO $3.7 BILLION AND NOW RANK AMONG 
  THE TOP 100 BANK HOLDING COMPANIES IN THE COUNTRY.
* WE DIVESTED OURSELVES OF NON-CORE BUSINESSES, WHICH WILL HAVE AN IMPACT ON
  FUTURE EARNINGS.
* WE IMPROVED TECHNOLOGY TO ACCOMMODATE YEAR 2000 ISSUES, FUTURE GROWTH, AND
  COMPETITIVE CHALLENGES.
* WE REALIGNED OUR ORGANIZATION AND IMPROVED THE MANAGEMENT OF OUR SALES PROCESS
  TO REFLECT A STRONGER CUSTOMER FOCUS.

        All of these factors contribute to the increase in shareholder value and
position AMCORE as a strong financial services company. Book value per share has
increased 40 percent since 1993 and shareholders' equity has risen 42 percent to
$287 million. We are a leader in our peer group in database marketing, human
resources management, professional sales techniques and sophisticated 
profitability programs. However, a few key financial areas need improvement. As
1998 unfolds, we look forward to strengthening our financial performance and
achieving above average earnings growth.

        We made great progress in 1997. Operating income for the year rose 10
percent to $35.1 million, excluding merger and outsourcing charges. 

                                                                            5
<PAGE>   7


Basic earnings per share from operations increased 9 percent to $1.31.  Adjusted
return on equity for the year was 13.05 percent.  We remain committed to 
reaching our important objective of 15 percent ROE in the near future.

        The financial results represent only one measure of our efforts. The
real story of our success is in the strength of our strategies.

        We established a strong presence in key Midwest markets with the
Wisconsin acquisitions of First National Bancorp, Inc., Monroe, in April and
Country Bank Shares Corporation, Mt. Horeb, in July. Our Wisconsin banks have
over $550 million in assets, 14 locations and contributed $6.4 million in net
income in 1997. 

        Plans for a third Wisconsin acquisition, Midwest Federal Financial
Corp., Baraboo, with over $212 million in assets and nine offices, should be
completed in early 1998. AMCORE is the tenth largest commercial bank in the
state and will grow to $750 million in assets with 23 offices. 

        These acquisitions are natural extensions of our markets and open up new
sales opportunities. We are not just acquiring assets, but are acquiring new
markets and good people. By maintaining local boards and management, we can
respond quickly to the needs of the market. This philosophy has made us a buyer
of choice for banks looking for the benefits of belonging to a super community
bank. 

        Our strategy of concentrating on our core businesses and determining
which companies and products are most compatible with our long term goals
resulted in two major sales. Our bill collection agency, Rockford Mercantile,
was sold in December and the satellite dish receivable portfolio held by AMCORE
Consumer Finance Company was sold in January 1998. While the write-down
resulting from the latter sale decreased earnings by $3 million, after tax, the
absence of this portfolio should have a positive impact on future earnings. 

        Our asset management and trust business continues to  be a strong
operation and contributes nearly 40 percent of our total fee-based income. This
core business will be enhanced with the addition of Investors Management Group,
Iowa's largest independent asset management firm. IMG's fixed income expertise,
institutional account business and mutual fund administration complements
AMCORE's strong equity management and retail distribution system. 

        As we look ahead to 1998, we will continue to blend the banks with the
financial services companies. To improve the management of these core
businesses, we named a chief operating officer to oversee our investment,
insurance and banking operations. This better reflects our mission to become
"One Company, One Culture, Serving the needs of our customers better than anyone
else." By offering our customers all of our products and services at one stop,
we hope to capture a greater share of their business.


6
<PAGE>   8

        In order to develop deeper relationships with our customers, our
employees are learning professional sales techniques, gaining an understanding
of customer profitability, mastering Product Knowledge programs and using
state-of-the-art technology to better serve the customer. The achievements we
accomplished this year will produce many benefits and are the foundation for our
future success.

        In closing, I would like to thank you, our shareholders, directors,
customers and employees for your support.
                                       
At AMCORE, we are working on the superior execution of traditional skills as we
achieve above average earnings growth. This chemistry of success will create a
vision for the future as we expand and grow - serving the needs of our
customers better than anyone else.

          Robert J. Meuleman
President and Chief Executive Officer
       AMCORE Financial, Inc.
                                       
                                                        Robert J. Meuleman
                                                         President and CEO
                                       
         Kenneth E. Edge                                James S. Waddell       
Executive Vice President and COO                Executive Vice President and CAO
                                       
                                                       
                                                       
                                       
          John R. Hecht
Executive Vice President and CFO
                                       


                           office of the president
                                       
                                                                   7
                                       


<PAGE>   9
                                       
                               increase income
                                       
                                      +
                                       
                                 performance
                                       
                               reduce expenses
                                       


<PAGE>   10



                         Improving Our Profitability
                                       
        In 1997, AMCORE Financial, Inc., increased shareholder value by working
toward greater profitability, building the franchise and implementing core
business strategies.

        The company realigned the organization and improved the sales process to
reflect a stronger customer focus. The chief operating officer now oversees all
affiliate  companies. The goal is to optimize the distribution system for the
sale of all products and services.

        As a result, greater efficiencies were achieved as core business
revenues increased significantly. Net operating income in 1997 rose 10 percent
to $35.1 million, excluding merger and outsourcing charges. The efficiency ratio
fell to a record low of 57.2 percent in  the fourth quarter of 1997 and was 60
percent for the year, a 3 percentage point drop from the previous year. The
revenue growth was from increased lending activity due to improvements in the
sales process and a robust Midwestern economy. Loans outstanding rose 9 percent
to $2 billion in 1997. Most of the increase was in the commercial area, where
new professional sales techniques were implemented. Consequently, commercial
loans increased 14 percent or $138 million in 1997.

        Loan growth also was attributed to strong markets. Rockford, the
northwest Chicago suburbs, south central Wisconsin and Aledo all had commercial
loan growth above 12 percent. AMCORE experienced an 8.7 percent increase in
agricultural loans from $126.5 million in 1996 to $137.6 million in 1997. 


        Retail loans to consumers increased and mortgage originations were up 21
percent from the previous year to $193 million for 1997. This was the result of
low interest rates in  the fourth quarter, improved sales techniques and faster
application processing. 

                                                                        9
<PAGE>   11

        The mortgage loan approval process has been reduced to as little as five
minutes. Increased refinancing volume is expected to continue in 1998 due to the
low interest rate environment. Through technology, this can be handled without
adding staff. 

        The trust and asset management business also had an excellent year and
contributed 38 percent of total fee-based income. In 1997, trust and asset
management income increased 17 percent to $16.5 million. A strong sales effort
resulting in new business and continued strength in investment markets
contributed to the increase. 

        The acquisition of Investors Management Group, Des Moines, Iowa, is
expected to  continue the growth in trust and asset management revenues. IMG
excels in fixed  income products and institutional account business. This
complements AMCORE's  strong equity management team and retail distribution
system. Offering a wider selection of products to fit customers' investment
needs is expected to create increased sales. 

        In addition, the administration of the Vintage Mutual Funds will be
brought in-house, leading to significant savings and revenue opportunities. The
combined companies will have $3.7 billion in assets under management. 

        While internal growth has been an important part of AMCORE's
initiatives, its acquisition program also has strengthened the franchise.
Acquisitions are not just to acquire assets, but to acquire new markets,
distribution channels for existing products and good management. The
acquisitions of First National Bancorp, Monroe, WI, and Country Bank Shares
Corporation, Mt. Horeb, WI, have contributed $6.4 million to net income in 1997.
Further savings and revenue opportunities are expected in 1998 as the banks
become fully integrated into AMCORE's systems. 

        Early in 1998, the company will complete the acquisition of Midwest
Federal Financial, Baraboo. AMCORE's total bank assets then will approach $4
billion and in Wisconsin, the company will have over $750 million in assets and
23 locations.

        During 1997, core business strategies were reviewed. The bill collection
agency, Rockford Mercantile Agency, Inc., was sold at year-end at a small loss.
This was a business that  had good name recognition, but was not performing to
expectations and was not a good strategic fit.

        The Consumer Finance Company's satellite dish receivables were
transferred to held-for-sale and a $5 million pre-tax fair value charge against
earnings ($3 million net) was booked in the fourth quarter of 1997. The $15
million portfolio had represented a disproportionate share of charge-offs and
loan loss provisions. This portfolio was sold in January 1998.

        Although the company did not reach its 15 percent return on equity goal
in the fourth quarter, it is an important interim objective in 1998. Losses from
the satellite dish receivables portfolio, merger related charges and outsourcing
charges all impacted earnings in 1997. As a result, 

10
<PAGE>   12


net income dropped 10 percent to $28.7 million from $31.9 million in the 
previous year. Return on equity for the year was 13.05 percent after merger and 
data processing charges.

        Management's decision to address these issues should result in improved
earnings in the future. Income from core business operations was strong and was
overshadowed by these issues. For instance, although the decision to outsource
core bank data processing resulted in a $2.6 million after-tax charge in 1997,
the company expects lower total data processing costs over the next five years.
AMCORE also gains year 2000 compliant systems, use of current software releases
and a standardized platform to support the sales culture and help better
integrate acquisitions. 

        Strategically, 1997 was an important year. The new management 
structure, focus on customers, technology improvements and strong presence in
key Midwest markets are expected to drive future performance and increase
shareholder value.
                                       
Improved profitability and greater visibility for our company were two
priorities in 1997. Although it is difficult to directly correlate these        
activities with the stock performance, AMCORE Financial's stock price in 1997
rose a dramatic 41%.

                             CLOSING STOCK PRICE
                                $25.13 in 1997

<TABLE>     
<CAPTION>       
                                1997       1996       1995      1994      1993
<S>                             <C>        <C>        <C>       <C>       <C>
Closing Stock Per Share        25.13       17.83     13.50     12.50     12.92
</TABLE>
                                                                              


                                                                              11

<PAGE>   13
                                       
                                      E
                                       
                                     east
                                       
                                      S
                                       
                                    south
                                       
                                      N
                                       
                                    north

                                      W
                                       
                                     west
                                       
                                    growth

<PAGE>   14

                           Broadening Our Horizons
                                       
        AMCORE expanded to a multi-state franchise with a strong presence in key
Midwest markets, which include Illinois, Wisconsin and Iowa.

        The company's growth strategy is to grow internally by building strong
customer relationships and to grow externally through acquisitions.

        Plans are to reach $6 billion in bank assets by the year 2000, and to
increase assets under management. The company has made significant progress
toward these growth goals.

        Bank assets increased 30 percent to $3.7 billion and will approach $4
billion in early 1998 with the acquisition of Midwest Federal Financial, Inc.,
Baraboo, WI.

        Assets under management will nearly equal bank assets at $3.8 billion
with the addition of Investors Management Group, Des Moines, Iowa.

        AMCORE Mortgage, Inc., had a banner year in 1997. Mortgage originations
were $193 million, an increase of 21 percent from the previous year.

        Growth, internal and external, is a reflection of a vibrant Midwest
economy and improved sales skills. Jobless rates for many of AMCORE's markets
are below the national average of 5 percent.

        The Midwest economic resurgence is due to an influx of population and
strong growth in manufacturing, agriculture and service companies. Rural areas
are experiencing an increase in manufacturing and in agriculture production.
Metropolitan areas, which have been strong as manufacturing centers, are also
becoming service centers.

        AMCORE is uniquely situated to enjoy all the benefits of the Midwest's
healthy economy because its markets include both metropolitan and rural
communities. Here is an overview of AMCORE's markets.

ILLINOIS

        Rockford is Illinois' second largest city and the home of AMCORE's
headquarters. The market area has a population of 354,732, which is expected to


                                                                        13

<PAGE>   15
increase by 4 percent during the next five years to 370,191. Average household
income is $47,113. Unemployment is currently 4.7 percent.

        Manufacturing is still the dominant industry employing over 35 percent
of the work force. However, the service sector accounts for much of the job
growth and now employs 25.3 percent of the work force, up from 21.9 percent in
1990. A recent industry study ranked Rockford fourth in Illinois, Wisconsin and
Michigan in the number of high-tech jobs in emerging firms with under 1,000
employees.

        The Rockford retail sector employs over 15 percent of the work force.
The influx of large chain stores has established Rockford as an important retail
source for the surrounding communities.

        Rockford also is quickly becoming a Midwest distribution hub because of
its exceptional highway, air and rail access. Some of the companies that
established operations in the area include the UPS Midwest Air Sorting Hub, the
second-largest in the country, and a distribution center for Landstar Inway, a
national trucking firm.

        Rockford also made the list of "20 Best Cities for Small Businesses" in
the fourth annual ranking by Dun and Bradstreet and Entrepreneur magazine. The
UPS hub and access to financial assistance were cited as reasons for the high
ranking. The small business market is an important one for AMCORE and the bank
recently was awarded the designation of certified lender from the Small Business
Administration. This designation allows AMCORE to process SBA loans
significantly faster.

        The Northwest Chicago suburbs are a strong growth market for AMCORE. The
company has offices in Carpentersville, Elgin, McHenry, Woodstock and Crystal
Lake. McHenry County is one of the fastest growing counties in Illinois with a
population of 236,171, which is expected to increase 15 percent in the next five
years. The average household income is $62,254. The county added 2.8 million
square feet of new commercial and industrial businesses, which created 1,500 new
jobs.

        AMCORE's North Central and Rock River Valley banks are positioned to
take advantage of continued growth along the interstate corridors of 88, 39 and
80. The combined assets of these banks approach $1 billion or almost 30 percent
of the company's overall assets. Along with manufacturing and service
industries, agri-business is strong in this area which claims some of the most
fertile farmland in the country. As a result, AMCORE is now the third largest ag
lender in Illinois and 57th in the nation.

WISCONSIN

        AMCORE will have over $750 million in assets and 23 locations in
Wisconsin when the acquisition of Midwest Federal Financial, Corp., is completed
early in 1998. AMCORE's Wisconsin market will then encompass eight counties with
a total population of over 800,000. The largest city in the market is Madison in
Dane County. The county has a population of 398,136 which is expected to grow 4
percent over the next five years to 415,437. The area's unemployment rate is one
of the nation's lowest at 1.8 percent. Madison is Wisconsin's state capital and
is also home to the University of Wisconsin. Consequently, the area's major
employers are government/education, which employs 


14



<PAGE>   16

27 percent of the work force. The service sector employs 24 percent of the work 
force and manufacturing employs 11 percent. Dane County is ranked third in the 
state for dairy production. Other AMCORE markets with a strong agri-business 
sector are Clinton, Mt. Horeb, Montello and Argyle. 

        The Monroe market in Green County has a population of 33,042, which is
expected to increase 5 percent over the next five years. The average household
income is $42,140.

        AMCORE's acquisition of Midwest Federal expands the market north from
Dane County into Sauk, Columbia and Green Lake Counties. The employment base
includes food processing, plastics, agriculture and tourism. The population is
over 100,000 with a projected 10 year growth rate of 12 percent. A significant
portion of the population commutes to Madison and was attracted to the area by
housing costs, land availability and property tax savings.

IOWA

        With the acquisition of Investors Management Group, Des Moines, AMCORE
now has a presence in Iowa. The Des Moines market has a population of 431,273,
which is expected to grow 6 percent in five years. The average household income
is $53,871. Des Moines is the state capital and home to many service companies,
which employ 27 percent of the work force. Other employment sectors and the
percentage of the work force they employ include government, 17 percent;
finance, insurance, real estate, 12 percent; and manufacturing, 8 percent.

        The outlook for the Midwest economy remains strong. Diversifying its
industrial base and growing its service industries should continue to produce
low unemployment and strong wages in the region.
                                       
With our foray into interstate banking, we are broadening AMCORE's horizons
beyond the Illinois border. Our target communities fall within a 250 mile       
radius of Rockford. Our markets are a unique mix of metropolitan and rural
communities, such as Madison, Wisconsin and Aledo, Illinois. 


                                     MDSN
                                       
                                      WI
                                       
                                      19
 
                                    ALEDO
                                       
                                      IL
                                       
                                      7
                                       
                                                                       15


<PAGE>   17

                                   Customer
                                       
<PAGE>   18
                          Meeting The Needs Of Many
                                       
        AMCORE took a pivotal step this year. The emphasis now is on determining
customers' financial goals and selling them the products they need.

        The organizational structure was changed and all affiliate companies are
now under the direction of one chief operating officer. This restructuring
maximizes the use of all customer contact points for the sale of all products
and services. The goal is to build customer relationships that grow and become
more valuable with time.

        The switch from a product emphasis to a customer focus reinforces
AMCORE's mission statement: One Company, One Culture, Serving the financial
needs of our customers better than anyone else. Customers now have access to
products and services at any time and any place, whenever they need them.

        Along with the reorganization, professional sales techniques and    
sophisticated profitability programs were implemented. In 1997, all of the
commercial sales staff and managers completed sales management training. In
1998, the retail sales staff and their managers will complete the program.

        Through a team approach to selling, customers have one-stop shopping  
convenience and can choose from a variety of products and services through one
customer contact point. The objective is to increase all financial service
assets by building multiple product sales around listening to and fulfilling
customers' needs.

        While targeting customers' needs more accurately is one way to improve
earnings, the company also is determining which products and customer buying
habits lead to greater profitability. Servicing and retaining existing customers
leads to stronger revenues. Customer profitability programs identify customers
by tiers from most profitable to least profitable.

                                                                        17

<PAGE>   19

        The strategy for developing best customers is to capture a greater share
of their business through stronger one-on-one relationships. Customer
relationships become more profitable when sales staff determine which products
will best meet the customers' financial needs and lead to a profitable sale.
More efficient use of electronic delivery channels also is contributing to
profitability.

        The main objective throughout the coming year is to continue to blend
the banks and the financial services companies together. This is essential to
maintain customer loyalty and increase profitability. There is a company-wide
commitment to quality service. All employees, from back room proof operators to
the president and chief executive officer, understand the commitment required to
rank among high performance companies. After all, an organization is only as
strong as its people.

        Consequently, there is a renewed emphasis on training and development to
prepare employees for the challenges ahead. A new performance management system
facilitates goal setting and rewards achievements that are in-line with
corporate objectives so employees can better manage their careers and achieve
maximum performance and job satisfaction.

        Product Knowledge training continues to be a success. Over 365 employees
completed the program in 1997 and over the past three years, 510 employees have
been Product Knowledge certified.

        AMCORE strives to maintain and develop a distinct and diverse product
line. A strong asset management business differentiates AMCORE as a leading
financial services company. Vintage Mutual Funds had phenomenal growth in 1997.
Assets in the funds increased over 35 percent to $871 million. The Vintage
Equity Fund sustained a five-star rating from Morningstar for four consecutive
quarters. Assets in the equity fund increased nearly 55 percent to $390 million.

        The acquisition of Investors Management Group, Des Moines, IA, will
further strengthen this core business and complement AMCORE's strong equity
management team and retail distribution system. IMG's expertise in fixed-income
products and institutional account business will create new cross-sell
opportunities. Future savings will be realized when mutual fund families from
both organizations are combined and fund administration is brought in-house.

        In 1997, customers indicated a need for an alternative investment
product that reflected market rates. AMCORE launched a new product called AMDEX,
a high balance money market account tied to the 13 week U.S. Treasury Bill,
adjusted monthly. This product raised significant low cost core deposits in
1997.

        While developing and marketing quality products is always paramount,
customers need to access their accounts more efficiently and at less cost to the
company. To accomplish both growth and operational goals, technology needed to
be improved.

18

<PAGE>   20
        In August, a contract was signed to outsource core bank data processing
with ALLTEL, a leader in bank data processing based in Little Rock, AR, to
improve technology and control data processing costs.

        The arrangement with ALLTEL provides  year 2000 compliant systems, a
standardized platform and state-of-the-art data processing systems. Outsourcing
also allows the company to grow dramatically and redeploy capital to focus on
core businesses.

        An internal task force assessed the impact of year 2000 issues and will
have made  preparations for the millennium change by the end of 1998.

        AMCORE now has access to one of the best processing systems in the
business and can offer customers improved service and new products. As a result,
core operating costs will be reduced over the next five years. The conversion is
expected to be completed by third quarter 1998 for all of our Illinois banks and
by fourth quarter for all of our Wisconsin banks.

        As 1998 unfolds, the company expects to continue implementing quality
service and sales programs and improving operating efficiencies.
                                       
AMCORE's new chemistry of success includes the strategic blending together of   
the banks and the financial services companies to provide superior service to
our customers not just today, but throughout their lives.


                                                                              19

<PAGE>   21

                                     1997





                                  financials








<PAGE>   22

            Consolidated Financial Statements And Financial Review
                                       



<TABLE>
<CAPTION>

AMCORE Financial, Inc. and Subsidiaries                                  CONSOLIDATED BALANCE SHEETS
                                                                                 (in thousands)
                                                                               As of December 31, 
ASSETS                                                                          1997           1996
  <S>                                                                    <C>            <C>
  -------------------------------------------------------------------------------------------------
  Cash and cash equivalents                                              $   105,218    $   105,347
  -------------------------------------------------------------------------------------------------
  Federal funds sold and other short-term investments                          2,839         27,094
  -------------------------------------------------------------------------------------------------
  Loans held for sale                                                         29,869         11,730
  -------------------------------------------------------------------------------------------------
  Securities available for sale                                            1,441,593      1,213,957
  -------------------------------------------------------------------------------------------------
  Securities held to maturity (fair value of $15,611 in 1997; 
   $55,242 in 1996)                                                           15,423         54,548
  =================================================================================================
       Total Securities                                                    1,457,016      1,268,505
  -------------------------------------------------------------------------------------------------
  Loans and leases, net of unearned income                                 1,962,674      1,807,121
  -------------------------------------------------------------------------------------------------
  Allowance for loan and lease losses                                        (19,908)       (19,295)
  =================================================================================================
       Net Loans and Leases                                                1,942,766      1,787,826
  -------------------------------------------------------------------------------------------------
  Premises and equipment, net                                                 54,774         56,567
  -------------------------------------------------------------------------------------------------
  Intangible assets, net                                                      12,168         13,881
  -------------------------------------------------------------------------------------------------
  Other real estate owned                                                      1,668            920
  -------------------------------------------------------------------------------------------------
  Other assets                                                                61,372         60,125
  =================================================================================================
       Total Assets                                                      $ 3,667,690    $ 3,331,995
  =================================================================================================
                                                                        
LIABILITIES                                                             
  -------------------------------------------------------------------------------------------------
  Deposits:                                                             
  -------------------------------------------------------------------------------------------------
     Demand deposits                                                     $   915,954    $   841,085
  -------------------------------------------------------------------------------------------------
     Savings deposits                                                        170,882        192,608
  -------------------------------------------------------------------------------------------------
  Other time deposits                                                      1,440,207      1,317,797
  =================================================================================================

       Total Deposits                                                      2,527,043      2,351,490
  -------------------------------------------------------------------------------------------------
  Short-term borrowings                                                      647,509        549,081
  -------------------------------------------------------------------------------------------------
  Long-term borrowings                                                       159,125        131,612
  -------------------------------------------------------------------------------------------------
  Other liabilities                                                           46,537         42,392
  =================================================================================================
       Total Liabilities                                                 $ 3,380,214    $ 3,074,575
  =================================================================================================
                                                                        
STOCKHOLDERS' EQUITY                                                    
  -------------------------------------------------------------------------------------------------
  Preferred stock, $1 par value: authorized                             
      10,000,000 shares; none issued                                     $         -    $         -
  -------------------------------------------------------------------------------------------------
  Common stock, $.22 par value: authorized 45,000,000 shares; 
     issued 27,681,138; outstanding 26,922,604 in 1997, 26,706,883 in 1996     6,152          6,134
  -------------------------------------------------------------------------------------------------
  Additional paid-in capital                                                  73,262         68,047
  -------------------------------------------------------------------------------------------------
  Retained earnings                                                          206,235        191,485
  -------------------------------------------------------------------------------------------------
  Treasury stock and other                                                    (6,547)        (6,290)
  -------------------------------------------------------------------------------------------------
  Net unrealized gain (loss) on securities available for sale, net of taxes    8,374         (1,956)
  =================================================================================================

       Total Stockholders' Equity                                        $   287,476    $   257,420
  =================================================================================================

       Total Liabilities and Stockholders' Equity                        $ 3,667,690    $ 3,331,995
  =================================================================================================
</TABLE>



                                                                        21
                                       
<PAGE>   23
<TABLE>
<CAPTION>
AMCORE Financial, Inc. and Subsidiaries                   CONSOLIDATED STATEMENTS OF INCOME
                                                        (In thousands, except per share data)

                                                                Years ended December 31,
INTEREST INCOME                                                        1997      1996
  ===================================================================================
  <S>                                                             <C>       <C>
  Interest and fees on loans and leases                           $ 164,520 $ 152,974
  -----------------------------------------------------------------------------------
  Interest on securities                                             93,372    77,838
  -----------------------------------------------------------------------------------
  Interest on federal funds sold and other short-term investments       538     1,545
  -----------------------------------------------------------------------------------
  Interest and fees on mortgage loans held for sale                   3,077     2,679
  ===================================================================================
    Total Interest Income                                         $ 261,507 $ 235,036
  ===================================================================================

INTEREST EXPENSE
  ===================================================================================
  Interest on deposits                                            $ 101,075 $  93,197
  -----------------------------------------------------------------------------------
  Interest on short-term borrowings                                  38,998    26,044
  -----------------------------------------------------------------------------------
  Interest on long-term borrowings                                    8,887     9,661
  ===================================================================================
    Total Interest Expense                                        $ 148,960 $ 128,902
  ===================================================================================
    Net Interest Income                                           $ 112,547 $ 106,134
  ===================================================================================

  ===================================================================================
  Provision for loan and lease losses                                 7,045     5,428
  ===================================================================================
    Net Interest Income After Provision for Loan and Lease Losses $ 105,502 $ 100,706
  ===================================================================================

NON-INTEREST INCOME
  ===================================================================================
  Trust and asset management income                               $  16,451 $  14,100
  -----------------------------------------------------------------------------------
  Service charges on deposits                                         7,837     7,686
  -----------------------------------------------------------------------------------
  Mortgage revenues                                                   4,340     4,649
  -----------------------------------------------------------------------------------
  Insurance revenues                                                  2,239     2,224
  -----------------------------------------------------------------------------------
  Collection fee income                                               2,105     2,145
  -----------------------------------------------------------------------------------
  Other                                                              10,538     9,595
  ===================================================================================
    Total Non-Interest Income, Excluding Net Security Gains       $  43,510 $  40,399
  ===================================================================================
  Net realized security gains                                         4,198     1,871
  -----------------------------------------------------------------------------------

OPERATING EXPENSES
  ===================================================================================
  Personnel expense                                               $  58,858 $  56,061
  -----------------------------------------------------------------------------------
  Net occupancy expense                                               6,490     6,596
  -----------------------------------------------------------------------------------
  Equipment expense                                                  10,816     8,454
  -----------------------------------------------------------------------------------
  Professional fees                                                   6,366     3,150
  -----------------------------------------------------------------------------------
  Amortization of intangible assets                                   2,212     2,219
  -----------------------------------------------------------------------------------
  Fair value adjustment on loans held for sale                        4,955         -
  -----------------------------------------------------------------------------------
  Other                                                              25,931    22,459
  ===================================================================================
    Total Operating Expenses                                      $ 115,628 $  98,939
  ===================================================================================
  Income Before Income Taxes                                      $  37,582 $  44,037
  -----------------------------------------------------------------------------------
  Income taxes                                                        8,918    12,161
  ===================================================================================
    Net Income                                                    $  28,664 $  31,876
  ===================================================================================
  Basic Earnings Per Common Share                                 $    1.07 $    1.20
  -----------------------------------------------------------------------------------
  Diluted Earnings per Common Share                                    1.05      1.18
  -----------------------------------------------------------------------------------
  Dividends per Common Share                                           0.45      0.38
  -----------------------------------------------------------------------------------
  Average Common Shares Outstanding                                  26,862    26,649
  -----------------------------------------------------------------------------------
</TABLE>



22

<PAGE>   24

                               Financial Review
                                       
        The financial review focuses on key financial trends and results of
operations for years ended December 31, 1997 and 1996. A comprehensive
presentation of the financial statements and management's presentation of the
analysis of financial condition and  results of operations can be found in the
1997 Annual Report on Form 10-K filed with the Securities Exchange Commission.
All shareholders have been provided the 1998 Notice of Annual Meeting, 1997
Proxy and 1997 Annual Report on Form 10-K along with this Summary Annual
Report.

        The financial statements and this review have been restated to reflect
the April 18, 1997 merger with First National Bancorp, Inc. of Monroe,
Wisconsin, the July 16, 1997 merger with Country Bank Shares Corporation and
the September 17, 1997 three-for-two stock split.

EARNINGS SUMMARY

        AMCORE reported net income of $28.7 million for the year-end December 
31, 1997, a decline from the $31.9 million reported in 1996. The decline was
attributable to $6.4 million of after-tax charges  related to the two Wisconsin
mergers and the outsourcing of our core bank data processing. Excluding these
charges, AMCORE's net income from operations would have been $35.1 million, or
a 10.1% increase from the year of 1996.

        Diluted earnings per share were $1.05 in 1997 versus $1.18 in 1996.
Excluding the merger-related and core bank data processing charges, diluted
earnings per share would have been $1.29.

        AMCORE's earnings were also negatively impacted by the performance of
the satellite dish receivable portfolio in the Consumer  Finance subsidiary. As
a result of this portfolio, this subsidiary had a net loss of $4.2 million or
$.16 per share. Included in this loss is a $3.0 million after-tax adjustment to
fair value which was recorded when the satellite portfolio was transferred to
held for sale. This portfolio was sold on January 27, 1998.

        The return on average equity, excluding merger-related and core bank
data processing outsourcing charges was 13.05% in  1997 compared to 13.14% in
1996. The return on average assets was 1.00% for  1997 and 1996 when the
charges are excluded in calculating the 1997 ratio.

NET INTEREST INCOME

        Net interest income, AMCORE's primary source of revenue, is the
difference between interest fees earned on earning assets less interest expense
on interest bearing liabilities. Interest income on certain loans and
investment securities is not subject to Federal income tax. For analytical
purposes, net interest income is adjusted to a fully taxable equivalent (FTE)
basis. Net interest income (FTE) 

                           NET INTEREST INCOME-FTE
                         $121.7 in 1997 (In Millions)

<TABLE>     
<CAPTION>       
                                1997        1996        1995        1994       1993
<S>                             <C>        <C>        <C>        <C>         <C>
Net Interest Income-FTE       $121,781    $114,590    $104,913    $102,625   $101,251
</TABLE>



                                                                        23


<PAGE>   25

increased $7.2 million, to $121.8 million,  an increase of 6.3% from the $114.6 
million reported in 1996. The improvement in net interest income results 
primarily from a $341.8 million or 11.5% increase in average earning assets 
which was partially offset by a narrowing of the interest rate spread.

        The growth in average earning assets can be attributed to a $155.5
million or 9.1% increase in average loans and a $188.5 million increase in the
investment securities, mainly in the investment leveraging program. The
investment leveraging program, which is designed to better utilize  equity
capital, contributed approximately $9.1 million to net interest income in 1997,
an increase of $2.9 million over 1996. The securities are financed through the
use of wholesale funding sources such as repurchase agreements, brokered CD's
and Federal Home Loan Bank borrowings. The proceeds  of these borrowings are
invested principally in mortgage-backed and agency securities.

        The interest rate spread is the difference between the average rate
earned on earning assets less the average rate paid on interest bearing
deposits and borrowings. AMCORE's interest rate spread declined 22 basis points
to 3.00% in 1997. The interest rate margin, net interest income divided by
average earning assets, declined 17 basis points during 1997 to 3.64%. Both of
these  declines can be attributed to the increase in the investment leveraging
program, a change in the mix of interest bearing  deposits and the issuance of
$40.0 million of trust preferred securities.

        The interest rate spread on the investment securities in the leveraging
program was approximately 1.47%. The interest rate spread on all other earning
assets was approximately 3.38%. The core interest rate margin, which excludes
the effect of the investment leveraging program, was 4.14% in 1997, a decline
of 11 basis points from the core interest margin in 1996 of 4.25%.

        The mix of average interest bearing deposits changed in 1997 as higher
rate time deposits increased while lower rate saving deposits decreased. Time
deposits, mainly wholesale certificate of deposits, increased $99.3 million on
average and represented 65.4% of interest bearing deposits in 1997 compared to
64.0% in 1996. Savings deposits decreased $16.1 million on average and
represented 8.7% of interest bearing deposits in 1997 compared to 10.0% in
1996. 

        The $40.0 million of trust preferred securities are an important part
of the company's capital structure. These securities, which count towards Tier
1 regulatory capital, bear a higher rate than other interest bearing
liabilities; however, the interest is  tax deductible resulting in a lower
after-tax cost of capital.

PROVISION FOR LOAN AND LEASE LOSSES

        The provision for loan and lease losses was $7.0 million for 1997, an
increase of $1.6 million or 29.8% from the $5.4 million in 1996. The increase
is primarily attributable to the growth in loans during 1997 and the losses
associated with the satellite dish receivable portfolio. The net charge-offs
from this portfolio of loans represented 41.1% of total net charge-offs during
1997 and accounted for most of the $3.2 million  increase in net charge-offs.


24

<PAGE>   26


NON-INTEREST INCOME

        Total non-interest income is comprised primarily of fee based revenues
from trust and asset management, mortgage banking, brokerage, insurance and
collection agency services. Also, included in this category are fees from bank
services  primarily relating to deposits. Total non-interest income, excluding
net security gains, increased $3.1 million or 7.7% to $43.5 million in 1997.

                             NON-INTEREST INCOME
                         $47.7 in 1997 (In Millions)

<TABLE>     
<CAPTION>       
                                1997       1996       1995      1994      1993
<S>                             <C>        <C>        <C>       <C>       <C>
Non-Interest Income           $47,708    $42,270    $36,874    $33,891   $32,693
</TABLE>


        Trust and asset management income, the largest source of the fee based
revenues, totaled $16.5 million in 1997, an increase  of $2.4 million or 16.7%.
This increase is attributable to favorable market performance of trust
accounts, growth in our proprietary Vintage Mutual Funds and new trust
accounts. As of December 31, 1997, the AMCORE Vintage Mutual Funds totaled $871
million, an increase of $229 million or 35.7%, and trust assets under
administration totaled $2.9 billion.

        The increase in service charges on deposits of 2.0% relates to the
growth in demand deposits. Mortgage revenue declined as a result of a $742,000
write-down of mortgage servicing rights required by the adoption of Statement
of Financial Accounting Standards (FAS) No. 125 "Accounting for Transfers and
Servicing of Financial Assets and Extinguishments in Liabilities" which was
effective January 1, 1997. Excluding this writedown, mortgage revenues
increased 9.3% mainly as a result of a 21.1% increase in mortgage originations
to $192.8 million for the year 1997.

        Insurance revenues and collection agency commissions remained
relatively flat when comparing the year of 1997 to 1996. These lines of
business were re-evaluated during 1997. As a result, the collection agency was
sold at year-end 1997. The insurance agency was placed under the asset
management group where increased cross-sell opportunities should exist.

        Other income increased $943,000 when comparing the year of 1997 to
1996. This  increase is related primarily to increased ATM fees and brokerage
commissions.

OPERATING EXPENSES

        Total operating expense increased $16.7 million in 1997 due to the $5.0
million adjustment to fair value of satellite receivables, $4.9 million of
merger-related expenses and $4.3 million of expenses  related to outsourcing
core bank data processing. Excluding these charges, operating  expenses from
normal operations would have increased $2.8 million or 2.8%. The efficiency
ratio, excluding the above mentioned charges, improved to 60.0% as operating
revenues increased 8.0% during 1997.


                              EFFICIENCY RATIO*
                                 60% in 1997
                   *1997 and 1995 ratios have been adjusted
                     to exclude merger and other charges

<TABLE>     
<CAPTION>       
                                1997       1996       1995      1994      1993
<S>                             <C>        <C>        <C>       <C>       <C>
Efficiency Ratio *             60.02%     63.07%     69.30%    67.83%    66.92%
</TABLE>


                                                                        25

<PAGE>   27


        Personnel expense, which includes  compensation expense and employee    
benefits, is the largest component of operating expenses. Personnel expense
increased $2.8 million to $58.9 million in 1997, an increase of 5.0%. Excluding
the merger-related costs, the increase would have been $1.6 million or 2.8%.
The higher costs in 1997 were primarily caused by normal merit increases.

        Net occupancy and equipment expenses were $17.3 million for 1997, an
increase of $2.3 million. This increase results from $3.3 million of expenses
related to merger and core bank data processing outsourcing. Excluding these
expenses, these categories would have decreased as the benefits of
consolidating offices and core outsourcing were recognized.

        Professional fees increased $3.2 million to $6.4 million in 1997
primarily as a result of $2.5 million of merger-related expenses.

        Other  expenses were $25.9 million in 1997, an increase of $3.5
million. This included $1.9 million of expenses related to the mergers and
outsourcing. The primary cause of the remaining increase related to increased
communication expense and amortization of mortgage servicing rights. 

INCOME TAXES

        Income taxes were $8.9 million in 1997 compared to $12.2 million in
1996, a decrease of $3.3 million. The effective tax rate declined to 23.7% in
1997 from 27.6% in 1996. Both the actual dollar decrease and the decline in
effective tax rate are a result of lower income before tax and higher levels of
tax exempt income at both the federal and state levels.


BALANCE SHEET SUMMARY

        Total assets at the end of 1997 were $3.7 billion, an increase of
$335.7 million or 10.1% over 1996. The primary contributors to asset growth
during 1997 were increased loan demand and the growth of the investment
leveraging program. Total loans, net of unearned income, were $1.96 billion at
year-end 1997, an increase of $155.6 million or 8.6% over 1996, mostly in the
commercial, agricultural and commercial real estate portfolios. Total
securities were  $1.46 billion at the end of 1997, a $188.5 million or 14.9%
increase over 1996. This growth was  primarily in U.S. government agency and
mortgage-backed securities used in the investment leveraging program and
municipal securities.

                                AVERAGE LOANS
                        $1,867.3 in 1997 (In Millions)

<TABLE>     
<CAPTION>       
                                1997        1996          1995          1994          1993
<S>                             <C>         <C>         <C>          <C>           <C>
Average Loans               $1,867,355    $1,711,850    $1,557,375    $1,391,037    $1,274,200
</TABLE>

        Core deposits, which include demand deposits, consumer time deposits,
and savings deposits, are considered by management to be the primary and most
stable source of funding. Total core deposits were $2.11 billion at the end of
1997, an $87.7 million or 4.3% increase over the prior year-end. These core
deposits are supplemented by brokered deposits, time deposits from


26


<PAGE>   28

governmental entities, repurchase agreements and Federal Home Loan Bank 
borrowings.

        Brokered deposits, which now total  $222.4 million, increased $101.9
million to partially fund the growth in loans and a portion of the investment
leveraging program. Federal Home Loan Bank borrowings remained relatively flat,
increasing only $2.2 million to $187.9 million. Repurchase agreements increased
$86.7 million to $528.6 million to fund the remaining growth in the investment
leveraging program. The $40.0 million of trust preferred securities discussed
earlier are classified as long term debt.

ASSET QUALITY

        Total non-performing assets increased $8.3 million or 62.9% to end the
year at $21.5 million. Total non-performing assets represent only 0.59% of
total assets at December 31, 1997 compared to 0.40% in 1996. The increase in
non-performing assets was due to a $7.6 million increase in non-performing
loans, which included one agricultural related credit of $3.6 million.

        The allowance for loan and lease losses increased $613,000 or 3.2% to
$19.9 million. As of December 31, 1997, the allowance for loan and lease losses
represents 1.01% of total loans and 100% of non-performing loans.

CAPITAL

        Total stockholders' equity at December 31, 1997 was $287.5 million, an
increase of $30.1 million or 11.7%. Stockholders' equity includes an adjustment
to market value for securities classified as available for sale. The market
value of these securities increased $10.3 million during 1997.

        AMCORE paid $12.1 million in 1997 of cash dividends which represents
$.45 per share or a dividend payout ratio of 34.6%, excluding the core bank
data processing outsourcing and merger-related charges. This represents a 20.8%
increase from the $.38 per share paid in 1996. The book value per share
increased $1.04 per share to $10.68 at December 31, 1997.

        AMCORE is considered a well-capitalized institution based on regulatory
guidelines. AMCORE's leverage ratio of 8.31% at December 31, 1997 exceeds the
regulatory guideline of 5% for well-capitalized institutions. AMCORE's ratio of
Tier 1 capital at 13.50% and total risk based capital at 14.38% significantly
exceed the regulatory minimums as the table below indicates.
<TABLE>
<CAPTION>


(Dollar in thousands)                           DECEMBER 31, 1997        
                                                  AMOUNT           RATIO 
- ------------------------------------------------------------------------
<S>                                              <C>              <C>
Tier 1 Capital                                   $306,364         13.50% 
- ------------------------------------------------------------------------
Tier 1 Capital Minimum                             90,775          4.00% 
- ------------------------------------------------------------------------
AMOUNT IN EXCESS OF REGULATORY MINIMUM           $215,589          9.50% 
======================================================================== 
                                                                              
                                                  AMOUNT          RATIO    
- ------------------------------------------------------------------------
Total Capital                                    $326,271         14.38% 
- ------------------------------------------------------------------------
Total Capital Minimum                             181,574          8.00% 
- ------------------------------------------------------------------------
AMOUNT IN EXCESS OF REGULATORY MINIMUM           $144,697          6.38% 
========================================================================
</TABLE>



                                                                        27

<PAGE>   29

            Notice Of Annual Meeting And Stockholder Information
                                       
INDEPENDENT AUDITORS' REPORT

The Board of Directors and Stockholders
AMCORE Financial, Inc.
Rockford, Illinois

We have audited, in accordance with generally accepted auditing standards, the
consolidated balance sheets of AMCORE Financial, Inc. and subsidiaries as of
December 31, 1997 and 1996, and the related consolidated statements of income,
stockholders' equity and cash flows for each of the years in the three year
period ended December 31, 1997 (not presented herein); and in our report dated
January 19, 1998, we expressed an unqualified opinion on those consolidated
financial statements.

In our opinion, the information set forth in the consolidated balance sheets
and consolidated statements of income appearing on pages 21 and 22 is fairly
presented, in all material respects, in relation to the consolidated financial
statements from which it has been derived.


/s/ McGladrey & Pullen, LLP


Rockford, Illinois
January 19, 1998



ANNUAL MEETING

The annual meeting of the stockholders will be held at 5:30 p.m. on Tuesday,
May 5, 1998 at Cliffbreakers, 700 West Riverside Boulevard, Rockford, Illinois.

STOCK LISTING AND STOCK PRICE

Common stock of AMCORE Financial, Inc. is traded on the National Market System
of NASDAQ under the symbol "AMFI." The principal market makers as of December
31, 1997 were:

       Robert W. Baird & Co., Inc.     Herzog, Heine, Geduld, Inc.
       The Chicago Corporation         Howe Barnes Investments, Inc.
       Everen Securities               Principal Financial Securities, Inc.

The stock of AMCORE has been traded on NASDAQ since May 29, 1986. Prior to that
time, AMCORE was traded in the over-the-counter market.

FORM 10-K

A copy of the Annual Report to the Securities and Exchange Commission on Form
10-K will be furnished free of charge upon written request to John R. Hecht,
Executive Vice President and Chief Financial Officer, AMCORE Financial, Inc.,
501 Seventh Street, Rockford, Illinois 61104, (815) 961-7003.

The number of stockholders of record as of February 28, 1998 was approximately
6,500. Dividends are declared and paid quarterly, the amount of which is
dependent on a number of factors. Earnings, regulatory constraints, restrictive
covenants with lenders, equity requirements of subsidiaries as well as the debt
service requirements of AMCORE will determine, in large part, the amounts
AMCORE will pay as dividends. (See the Form 10-K Annual Report for more
information.)

Safeguard your AMCORE Financial, Inc. stock. If lost, the cost to the
shareholder for replacement is approximately 2 percent of the current market
value of the shares.

The stock transfer agent for AMCORE Financial, Inc. is:
     Firstar Trust Company
     1555 N. RiverCenter Drive
     Suite 301
     Milwaukee, Wisconsin  53212
     1-800-637-7549


28

<PAGE>   30
                                       
                               AMCORE Locations
                                       
IN ILLINOIS:
                                                                               
                                                                               
AMCORE BANK,  ALEDO                       Hennepin and Boyd Drive-Up           
                                          212 North Hennepin                   
Aledo Office and Drive-Up                 Dixon, Illinois  61021               
201 W. Main Street                                                             
Aledo, Illinois  61231                    Independence Court Office and Drive-Up
                                          101 Independence Court               
AMCORE BANK N.A.,  NORTH CENTRAL          Dixon, Illinois  61021               
                                                                               
Ashton Office and Drive-Up                Leaf River Office                    
803 Main Street                           104 W. Second Street                 
Ashton, Illinois  61006                   Leaf River, Illinois  61047          
                                                                               
Gridley Office and Drive-Up               Mt. Morris Office and Drive-Up       
325 Center Street                         2 W. Main Street                     
Gridley, Illinois  61744                  Mt. Morris, Illinois  61054          
                                                                               
Mendota Office and Drive-Up               Oregon Office                        
801 Washington Street                     122 North Fourth Street              
Mendota, Illinois  61342                  Oregon, Illinois  61061              
                                                                               
Mendota Data Center and Drive-Up          Rock Falls Office and Auto Bank      
609 Eighth Avenue                         941 First Avenue                     
Mendota, Illinois  61342                  Rock Falls, Illinois  61071          
                                                                               
Peru Office                               Sterling Office and Drive-Up         
1810 Fourth Street                        302 First Avenue                     
Peru, Illinois  61354                     Sterling, Illinois  61081            
                                                                               
Peru Drive-Up                             AMCORE BANK N.A.,  ROCKFORD          
2022 Fourth Street                                                             
Peru, Illinois  61354                     Seventh Street Corporate Office      
                                          501 Seventh Street                   
Peru EconoFoods Office                    Rockford, Illinois  61104            
1351 38th Street                                                               
Peru, Illinois  61354                     Alpine Village Office and Drive-Up   
                                          2510 S. Alpine Road                  
Princeton Office and Drive-Up             Rockford, Illinois  61108            
815 S. Main Street                                                             
Princeton, Illinois  61356                Belvidere Pacemaker Office and Drive-
                                          401 Southtowne Drive                 
Princeton North Office and Drive-Up       Belvidere, Illinois  61008           
1407 N. Main Street                                                            
Princeton, Illinois  61356                Brynwood Office and Drive-Up         
                                          2705 N. Mulford Road                 
Sheffield Office                          Rockford, Illinois  61114            
113 S. Main Street                                                             
Sheffield, Illinois  61361                Brynwood Hilander Office             
                                          2601 N. Mulford Road                 
Wyanet Office and Drive-Up                Rockford, Illinois  61114            
135 E. Main Street                                                             
Wyanet, Illinois  61379                   Carpentersville Office and Drive-Up  
                                          94 Kennedy Memorial Drive            
AMCORE BANK N.A.,  NORTHWEST              Carpentersville, Illinois  60110     
                                                                               
Crystal Lake Office and Drive-Up          Colonial Village Office and Drive-Up 
5100 Northwest Highway                    1480 S. Alpine Road                  
Crystal Lake, Illinois  60014             Rockford, Illinois  61108 
                                          
McHenry Office                                                                 
3922 W. Main Street                       East State Drive-Up                  
McHenry, Illinois 60050                   1201 E. State Street                 
                                          Rockford, Illinois  61108            
Northwood Drive-Up                                                             
2100 N. Seminary Avenue                   Elgin Office and Drive-Up            
Woodstock, Illinois  60098                1950 Big Timber Road                 
                                          Elgin, Illinois  60123               
Woodstock Office and Drive-Up                                                  
225 W. Jackson                            Freeport Cub Foods Office            
Woodstock, Illinois  60098                1512 S. West Avenue                  
                                          Freeport, Illinois  61032            
AMCORE BANK N.A.,  ROCK RIVER VALLEY                                           
                                          North Alpine Cub Foods Office        
Dixon Office and Drive-Up                 6550 N. Alpine Road                  
101 W. First Street                       Loves Park, Illinois  61111          
Dixon, Illinois  61021
                                          North Main Hilander Office   
                                          3710 N. Main Street          
                                          Rockford, Illinois  61103    
                              
                              
                                                                        29
                              
                              
<PAGE>   31
                              
Rochelle Eagle Office                  AMCORE BANK N.A., SOUTH CENTRAL        
320 Eagle Drive                                                               
Rochelle, Illinois  61068              Monroe Office                          
                                       1625 Tenth Street                      
Rochelle Office and Drive-Up           Monroe, Wisconsin 53566                
1010 Highway 251 South                                                        
Rochelle, Illinois  61068              Monroe Drive-Up                        
                                       1919 Tenth Street                      
Roscoe Hilander Office and Drive-Up    Monroe, Wisconsin 53566                
4844 Hononegah Road                                                           
Roscoe, Illinois  61073                New Glarus Office                      
                                       512 Highway 69                         
Rural Hilander Office                  New Glarus, Wisconsin 53574            
1715 Rural Street                                                             
Rockford, Illinois  61107              Belleville Office                      
                                       One W. Main Street                     
Sixth Street Drive-Up                  Belleville, Wisconsin 53508            
920 Fourth Avenue                                                             
Rockford, Illinois  61104              Hilldale Office                        
                                       3609 University Avenue                 
South Beloit Office and Drive-Up       Madison, Wisconsin 53705               
640 Blackhawk Boulevard                                                       
South Beloit, Illinois  61080          Odana Office                           
                                       6698 Odana Road                        
South Main Office and Drive-Up         Madison, Wisconsin 53719               
228 S. Main Street                                                            
Rockford, Illinois  61101              Verona Office                          
                                       610 W. Verona Avenue                   
IN WISCONSIN:                          Verona, Wisconsin 53593                
AMCORE BANK, ARGYLE                                                           
                                       AMCORE FINANCIAL SERVICES COMPANIES    
                                                                              
Argyle Office and Drive-Up             AMCORE Consumer Finance Company, Inc.  
321 Milwaukee Street                   262 N. Phelps Avenue                   
Argyle, Wisconsin 53504                Rockford, Illinois  61108              
                                       (815) 961-4941                         
Darlington Office                                                             
153 Wells Street                       AMCORE Financial Life Insurance Company
Darlington, Wisconsin 53530            AMCORE Financial Plaza                 
                                       501 Seventh Street                     
AMCORE BANK, CLINTON                   P.O. Box 1537                          
                                       Rockford, Illinois  61110-0037         
Clinton Office                         (815) 968-2241                         
214 Allen Street                                                              
Clinton, Wisconsin 53525               AMCORE Insurance Group, Inc.           
                                       640 Blackhawk Boulevard                
                                       South Beloit, Illinois  61080          
Clinton Office and Drive-Up            (815) 389-3451                         
500 Peck Avenue                                                               
Clinton, Wisconsin 53525               AMCORE Investment Group, N.A.          
                                       AMCORE Financial Plaza                 
Darien Office                          501 Seventh Street                     
218 N. Walworth Street                 P.O. Box 1537                          
Darien, Wisconsin 53114                Rockford, Illinois  61110-0037         
                                       (815) 961-7119                         
AMCORE BANK, MONTELLO                                                         
                                       AMCORE Investment Services, Inc.       
Montello Office                        AMCORE Financial Plaza                 
24 West Street                         501 Seventh Street                     
Montello, Wisconsin 53949              P.O. Box 1537                          
                                       Rockford, Illinois  61110-0037         
Westfield Office                       (815) 961-7049                         
326 Second Street                                                             
Westfield, Wisconsin 53964             AMCORE Mortgage, Inc.                  
                                       1021 N. Mulford Road                   
AMCORE BANK, MT. HOREB                 P.O. Box 1687                          
                                       Rockford, Illinois  61110-0187         
Mt. Horeb Office                       (815) 961-7200                         
100 S. First Street                                                           
Mt. Horeb, Wisconsin 53572             Investors Management Group, Ltd.       
                                       2203 Grand Avenue                      
Mt. Horeb Drive-Up                     Des Moines, Iowa 50312-5338            
1300 Business Hwy. 18-151 East         (515) 244-5426                         
Mt. Horeb, Wisconsin 53572                                                    
                                            Rockford Office:                  
                                            AMCORE Financial Plaza            
                                            501 Seventh Street                
                                            P.O.Box 1537                      
                                            Rockford, Illinois  61110-0037    
                                            (815) 961-7779                    
                                       
                                       
                                       
                                       
30

<PAGE>   32
                                       
                                       
Directors of AMCORE Financial, AMCORE Corporate Executive Staff and Corporate
Board Chairmen
                                       
DIRECTORS OF AMCORE FINANCIAL, INC.      Roger Reno, Esq.                       
                                         Chairman Emeritus                      
Milton R. Brown                          AMCORE Financial, Inc.                 
Chairman of the Board,                                                          
President & Chief Executive Officer      CORPORATE EXECUTIVE STAFF AND          
Suntec Industries Incorporated           CORPORATE BOARD CHAIRMEN               
                                                                                
Carl J. Dargene                          R. David Bitting                       
Chairman                                 Chairman of the Board                  
AMCORE Financial, Inc.                   President & Chief Executive Officer    
                                         AMCORE Bank, Aledo                     
Richard C. Dell                                                                 
Group President                          Patricia M. Bonavia                    
Newell Co.                               President                              
                                         AMCORE Investment Services, Inc.       
Robert A. Doyle                                                                 
President                                Carl J. Dargene                        
Yenom Development Company                Chairman                               
                                         AMCORE Financial, Inc.                 
Lawrence E. Gloyd                                                               
Chairman & Chief Executive Officer       Kenneth E. Edge                        
CLARCOR                                  Executive Vice President               
                                         & Chief Operating Officer              
John A. Halbrook                         AMCORE Financial, Inc.                 
Chairman & Chief Executive Officer                                              
Woodward Governor Company                Jay H. Evans                           
                                         President & Chief Investment Officer   
Frederick D. Hay                         Investors Management Group, Ltd.       
Senior Vice President                                                           
Snap-on Incorporated                     Lori A. Gaddis                         
                                         President                              
William R. McManaman                     AMCORE Insurance Group, Inc.           
Vice President & Chief                                                          
Financial Officer                        Charles E. Gagnier                     
Dean Foods Company                       Executive Vice President               
                                         Bank Mergers & Acquisitions            
Robert J. Meuleman                       AMCORE Financial, Inc.                 
President & Chief Executive Officer      Chairman                               
AMCORE Financial, Inc.                   AMCORE Bank N.A., Rockford             
                                                                                
Ted Ross                                 Ronald L. Georgeson                    
President                                President & Chief Executive Officer    
Ross Consulting, Inc.                    AMCORE Bank N.A., South Central        
                                                                                
Robert J. Smuland                        Peggy K. Groebner                      
Retired                                  President & Chief Executive Officer    
Sundstrand Corporation                   AMCORE Bank, Clinton                   
                                                                                
Jack D. Ward, Esq.                       Andrew Hartlieb                        
Reno, Zahm, Folgate,                     President & Chief Executive Officer    
Lindberg & Powell, Attorneys             AMCORE Bank N.A., Northwest            
                                                                                
Gary L. Watson                           John R. Hecht                          
President/Newspaper Division             Executive Vice President &             
Gannett Co., Inc.                        Chief Financial Officer                
                                         AMCORE Financial, Inc.                 
DIRECTORS EMERITI OF                                                            
AMCORE FINANCIAL, INC.                   Dwight G. Heckert                      
                                         Chairman of the Board &                
David A. Carlson                         Chief Executive Officer                
Retired Chairman                         AMCORE Bank N.A., North Central        
Carlson Roofing Company                                                         
                                         William T. Hippensteel                 
Thomas L. Clinton, Sr.                   Senior Vice President & Manager        
Chairman                                 Corporate Marketing                    
Clinton Electronics Corporation          AMCORE Financial, Inc.                 

C. Roger Greene
Retired Chairman
Rockford Clutch Division
Borg-Warner Corporation

Robert A. Henry, M.D.
President
The Visioneering Group
                                       
                                                                        31
                                       
<PAGE>   33

Leon Holschbach
President & Chief Operating Officer
AMCORE Bank N.A., North Central

Alan W. Kennebeck
Group Vice President
AMCORE Financial, Inc.
President & Chief Executive Officer
AMCORE Investment Group, N.A.

Jerry A. Lecklider
President & Chief Executive Officer
AMCORE Bank N.A., Rock River Valley

John K. Mathys
President & Chief Executive Officer
AMCORE Bank, Argyle

Joseph B. McGougan
President & Chief Executive Officer
AMCORE Mortgage, Inc.

Robert J. Meuleman
President & Chief Executive Officer
AMCORE Financial, Inc.

Donald L. Miller
President
AMCORE Consumer Finance Company, Inc.

Wayne Pivotto
President & Chief Executive Officer
AMCORE Bank, Montello

James S. Waddell
Executive Vice President &
Chief Administrative Officer
Corporate Secretary
AMCORE Financial, Inc.

James F. Warsaw
President & Chief Executive Officer
AMCORE Bank N.A., Rockford

Charie A. Zanck
Group Vice President
AMCORE Financial, Inc.



32


<PAGE>   1

EXHIBIT 21

                       SUBSIDIARIES OF THE REGISTRANT

<TABLE>
<CAPTION>
                                          Jurisdiction of    Percent of Capital
Name of Subsidiary                          Organization        Stock Owned
- ------------------                        ---------------    ------------------
<S>                                       <C>                      <C> 
AMCORE Bank N.A., Rockford                 United States            100% 
                                                                         
AMCORE Bank N.A., Rock River Valley        United States            100% 
                                                                         
AMCORE Bank N.A., Northwest                United States            100% 
                                                                         
AMCORE Bank N.A., North Central            United States            100% 
                                                                         
AMCORE Bank Aledo                          Illinois                 100% 
                                                                         
Country Bank Shares Corporation            Wisconsin                100% 
                                                                         
AMCORE Bank Mt. Horeb                      Wisconsin                100% 
                                                                         
AMCORE Bank Clinton                        Wisconsin                100% 
                                                                         
AMCORE Bank Montello                       Wisconsin                100% 
                                                                         
AMCORE Bank Argyle                         Wisconsin                100% 
                                                                         
First National Bancorp, Inc.               Wisconsin                100% 
                                                                         
AMCORE Bank N.A., South Central            United States            100% 
                                                                         
AMCORE Investment Group, N.A.              United States            100% 
                                                                         
AMCORE Mortgage, Inc.                      Nevada                   100% 
                                                                         
AMCORE Consumer Finance Company, Inc.      Nevada                   100% 

AMCORE Financial Life Insurance Company    Arizona                  100%  

AMCORE Capital Management, Inc.            Illinois                 100%

AMCORE Insurance Group, Inc.               Illinois                 100%

AMCORE Investment Banking, Inc.            Illinois                 100%  

AMCORE Investment Services, Inc.           Illinois                 100%

AMCORE Capital Trust I                     Deleware                 100%

FNI Corporation                            Nevada                   100%
                                                                        
CBSC-Mt. Horeb, Inc.                       Nevada                   100%
                                                                        
CBSC-Clinton, Inc.                         Nevada                   100%
                                                                        
CBSC-Montello, Inc.                        Nevada                   100%
                                                                        
CBSC-Argyle, Inc.                          Nevada                   100%
</TABLE>




<PAGE>   1
 
                                  AMCORE LOGO
 
                    NOTICE OF ANNUAL MEETING OF STOCKHOLDERS
 
                             TO BE HELD MAY 5, 1998
 
TO THE STOCKHOLDERS OF AMCORE FINANCIAL, INC.:
 
     The Annual Meeting of Stockholders of AMCORE Financial, Inc., a Nevada
corporation, will be held at Cliffbreakers, 700 West Riverside Boulevard,
Rockford, Illinois on May 5, 1998, at 5:30 p.m., Rockford time, for the
following purposes:
 
          1. To elect four directors;
 
          2. To ratify the appointment of McGladrey & Pullen, LLP as auditors;
             and
 
          3. To transact such other business as may properly come before the
             meeting or any adjournment thereof.
 
     Only stockholders of record at the close of business on March 16, 1998 are
entitled to notice of and to vote at the meeting or any adjournment of the
meeting.
 
     Stockholders are cordially invited to attend the Annual Meeting. However,
whether or not you expect to be present in person at the Annual Meeting, you are
requested to SIGN, DATE AND RETURN THE ENCLOSED PROXY in the enclosed addressed
envelope. The proxy may be revoked at any time before it is voted, provided that
written notice thereof has been given to the Secretary of the Company. If you
are present at the meeting, you may vote your shares in person and the proxy
will not be used.
 
     For further information concerning individuals nominated as directors, the
appointment of McGladrey & Pullen, LLP as auditors and the use of the proxy, you
are respectfully urged to read the Proxy Statement on the following pages.
 
                                           By order of the Board of Directors,
 
                                          JAMES WADDELL
                                                     James S. Waddell
                                                        Secretary
 
March 26, 1998
Rockford, Illinois
<PAGE>   2
 
                             AMCORE FINANCIAL, INC.
                               501 SEVENTH STREET
                            ROCKFORD, ILLINOIS 61104
 
                                 March 26, 1998
 
                                PROXY STATEMENT
 
     This proxy statement is furnished in connection with the solicitation of
proxies to be voted at the Annual Meeting of Stockholders of AMCORE Financial,
Inc. (Company), a Nevada corporation, to be held on May 5, 1998 at 5:30 p.m.,
Rockford time, at Cliffbreakers, 700 West Riverside Boulevard, Rockford,
Illinois and any adjournment thereof, and further to inform the stockholders
concerning the use of the proxy and the business to be transacted at the
meeting.
 
     The enclosed proxy is solicited by the Board of Directors of the Company.
The proxy may be revoked at any time before it is voted. Proxies may be revoked
by filing written notice of revocation with the Secretary of the Company before
the meeting or by attending the meeting and voting in person. The items
enumerated herein constitute the only business which the Board of Directors
intends to present or is informed that others will present at the meeting. The
proxy does, however, confer discretionary authority upon the persons named
therein, or their substitutes, with respect to any other business which may
properly come before the meeting. Stockholders are entitled to one vote for each
share. Only stockholders of record at the close of business on March 16, 1998
are entitled to notice of and to vote at the meeting.
 
     Pursuant to the Bylaws of the Company, a majority of the outstanding shares
of the Company entitled to vote, represented in person or by proxy, shall
constitute a quorum at the meeting. Directors shall be elected by a plurality of
the votes cast in the election of directors. Any action to be taken by a vote of
the stockholders, other than the election of directors, must be authorized by a
majority of the votes cast at a meeting of stockholders by the holders of shares
entitled to vote thereon. Under applicable Nevada law, in tabulating the vote,
broker non-votes will be disregarded and will have no effect on the outcome of
the vote.
 
     The expenses in connection with the solicitation of proxies will be borne
by the Company. Solicitation will be made by mail, but may in some cases also be
made by telephone or personal call by officers, directors or regular employees
of the Company who will not be specially compensated for such solicitation. This
proxy statement and the accompanying proxy are first being mailed or delivered
to stockholders on or about March 26, 1998.
 
                        ITEM 1 -- ELECTION OF DIRECTORS
 
     In the election of the Board of Directors, stockholders are entitled to one
vote for each common share owned by them for each of the four nominees. They may
not cumulate their votes. As of March 16, 1998, the Company had outstanding
27,130,467 shares of common stock.
 
     There are four Class III directors to be elected at the 1998 Annual
Meeting.
 
     Proxy votes not limited to the contrary will be cast for the election of
the nominees named below, but should any of such individuals unexpectedly become
unavailable for election, the proxies reserve the right to nominate and vote for
such other person or persons as they shall designate.
 
                                        1
<PAGE>   3
 
     The following sets forth the names, ages, principal occupations and other
information regarding the director nominees and those directors whose terms
continue after the meeting.
 
     Nominees for Class III directors whose terms will expire in 2001 are:
 
     Ted Ross--Director since 1982
 
Mr. Ross, age 66, is President of Ross Consulting, Inc., previously TRoss, Inc.
(financial consultants). He is a Director of Precision Products Group, Inc.
(manufacturer of tubes and springs), and a Director, Secretary and Treasurer of
Rockford Process Control, Inc. (manufacturer of weldments and institutional
hardware).
 
     Robert J. Smuland--Director since 1992
 
Mr. Smuland, age 62, was previously Executive Vice President and Chief Operating
Officer of Sundstrand Corporation, Aerospace (manufacturer of industrial and
aerospace products) until June 1996, and a Director of Sundstrand Corporation
until June 1996.
 
     Jack D. Ward--Director since 1995
 
Mr. Ward, age 45, is an Attorney at Law and Partner with the law firm of Reno,
Zahm, Folgate, Lindberg & Powell, and was previously a Director of AMCORE
Mortgage, Inc. until May 1995.
 
     Gary L. Watson--Director since 1987
 
Mr. Watson, age 52, is President of Newspaper Division, Gannett Co., Inc.
 
     Those directors whose terms do not expire this year are:
 
CLASS I (TERMS EXPIRE 1999)
 
     Lawrence E. Gloyd--Director since 1987
 
Mr. Gloyd, age 65, has been Chairman and Chief Executive Officer of CLARCOR
(diversified manufacturer) since March 1995 and is a Director of CLARCOR. He was
previously the Chairman, President and Chief Executive Officer of CLARCOR. He is
a Director of Thomas Industries, Inc. (manufacturer of lighting fixtures, pumps
and compressors), a Director of G.U.D. Holdings LTD (diversified manufacturer)
and a Director of Woodward Governor Company (manufacturer of controls for
various types of engines).
 
     John A. Halbrook--Director since 1997
 
Mr. Halbrook, age 53, has been Chairman and CEO of Woodward Governor Company
(manufacturer of controls for various types of engines) since January 1995. He
was previously President of Woodward Governor Company. Mr. Halbrook served as a
Director of AMCORE Investment Group, N.A. until November 1997.
 
     Frederick D. Hay--Director since 1997
 
Mr. Hay, age 53, has been Senior Vice President-Transportation of Snap-On
Incorporated (manufacturer of tools) since February 1996. He was previously
President of Interior Systems and Components Division at United Technologies
Automotive.
 
     Robert J. Meuleman--Director since 1995
 
Mr. Meuleman, age 58, has been President and Chief Executive Officer of the
Company since January 1996. He was previously Executive Vice President and Chief
Operating Officer, Banking Subsidiaries. He is a director of AMCORE Bank N.A.,
Rockford and a director of AMCORE Financial Life Insurance Company. Mr. Meuleman
was previously a Director of AMCORE Bank N.A., Rock River Valley until December
1996.
 
CLASS II (TERMS EXPIRE 2000)
 
     Milton R. Brown--Director since 1989
 
Mr. Brown, age 66, is Chairman, President and Chief Executive Officer of Suntec
Industries Incorporated (manufacturer of fuel unit components). He is a Director
of CLARCOR (diversified manufacturer).
                                        2
<PAGE>   4
 
     Carl J. Dargene--Director since 1982
 
Mr. Dargene, age 67, has been Chairman of the Board of Directors of the Company,
since May 1995. He retired in December 1995 as President and Chief Executive
Officer of the Company. He is Vice Chairman and Director of AMCORE Investment
Group, N.A. He is a Director of Woodward Governor Company (manufacturer of
controls for various types of engines) and of CLARCOR (diversified
manufacturer). He was previously Chairman of the Board of Directors for AMCORE
Bank N.A., Rockford until December 1996, a director of AMCORE Bank Dixon until
December 1993 and AMCORE Bank N.A., Northwest until March 1993.
 
     Richard C. Dell--Director since 1994
 
Mr. Dell, age 52, is Group President of Newell Company (diversified
manufacturer).
 
     William R. McManaman--Director since 1997
 
Mr. McManaman, age 50, has been Vice President--Finance and Chief Financial
Officer of Dean Foods Company since October 1995. He was previously Vice
President--Finance of Brunswick Corporation.
 
INFORMATION CONCERNING THE BOARD OF DIRECTORS AND ITS COMMITTEES
 
     The Company has an Executive Committee whose members are Messrs. Dargene,
Doyle, Gloyd, Meuleman and Ross. The Executive Committee exercises those powers
of the Board of Directors in the management of the Company which have been
delegated to it by the Board of Directors. The Executive Committee met six times
during 1997.
 
     The Company has an Audit Committee whose members are Messrs. Brown,
Halbrook, McManaman, Ward and Watson. Mr. Dargene serves as an ex-officio member
of this Committee. The duties of the Audit Committee are to review the proposed
scope of the annual audit and the results and recommendations of the independent
auditors upon completion of the annual audit; nominate a firm of independent
auditors to be submitted to the Board of Directors for approval and subsequent
ratification by stockholders at the annual meeting; recommend the compensation
of the independent auditors; review the Company's system of internal controls
and the performance of its internal auditors; and monitor compliance by
management with certain Company policies. The Audit Committee met three times
during 1997.
 
     The Company has an Investment Committee whose members are Messrs. Doyle,
Halbrook, McManaman, Meuleman, and Ross. Messrs. Dargene, Mr. Paul Donovan,
AMCORE Bank N.A., Rockford Director, Kenneth E. Edge, Jay H. Evans, President
and Chief Investment Officer, Investors Management Group, LTD, John R. Hecht ,
Executive Vice President and Chief Financial Officer of the Company, and James
F. Warsaw serve as ex-officio members of the committee. The Investment Committee
establishes the investment policies of the Company and its subsidiaries. During
1997, the Investment Committee met four times.
 
     The Company has a Compensation Committee whose members are Messrs. Dell,
Gloyd, Hay, and Smuland. Messrs. Dargene and Meuleman serve as ex-officio
members. The Compensation Committee advises the Company concerning its employee
compensation and benefit policies and administers the Company's Long-Term
Incentive Plan, 1992 Stock Incentive Plan and 1995 Stock Incentive Plan. The
Compensation Committee also administers the Restricted Stock Plan for
Non-Employee Directors of the Company and its Participating Subsidiaries and the
1994 Stock Option Plan for Non-Employee Directors. During 1997, the Compensation
Committee met four times. A report of the Compensation Committee is set forth on
page nine of this Proxy Statement.
 
     The Company has a Directors Affairs Committee whose members are Messrs.
Brown, Dell, Hay, Smuland and Ward. Messrs. Dargene and Meuleman serve as
ex-officio members of this Committee. The primary duties of the Directors
Affairs Committee are to provide nominations to the Board of Directors, make
recommendations regarding directors' remuneration, recommend policies for the
retirement of directors and fulfill other responsibilities as may be delegated
to it by the Board of Directors. The Directors Affairs Committee meets as
necessary. The Directors Affairs Committee did not meet during 1997.
 
     As of December 31, 1997, the Company had no other committees of the Board
of Directors.
                                        3
<PAGE>   5
 
     The Board of Directors met five times during 1997. All directors attended
at least 75% of the Board meetings and meetings held by all committees of the
Board on which they served during the period they were directors in 1997.
 
     Directors of the Company, other than Messrs. Dargene and Meuleman, earned
an annual retainer of $10,000 of the Company's common stock, pursuant to the
Non-Employee Director's Stock Plan, for services rendered to the Company as a
member of its Board of Directors. All non-employee directors earned a fee of
$750 for each Board and committee meeting attended during 1997. All non-employee
committee chairmen earned a one time fee of $1,000. Mr. Dargene was paid
$200,000 for services rendered as Chairman of the Board of Directors of the
Company in 1997 in addition to LTIP payouts of $135,289, $4,181 for
reimbursement during the year for taxes and $5,292 for all other compensation.
Messrs. David A. Carlson, Thomas L. Clinton, and C. Roger Greene, as Director
Emeriti, receive a lifetime retainer of $7,000 per year. Mr. Robert A. Doyle,
who will retire on May 5, 1998, and Dr. Robert A. Henry, as Director Emeriti,
will receive a lifetime retainer of $10,000 per year. All non-employee directors
were granted 1,500 common stock options on May 3, 1994 at $13.4167, 1,500
options on May 9, 1995 at $12.75, 1,500 options on May 15, 1996 at $13.3334 and
1,500 options on May 21, 1997 at $18.50 pursuant to the 1994 Stock Option Plan
for Non-Employee Directors.
 
SECURITY OWNERSHIP OF DIRECTORS AND OFFICERS
 
     The following tabulation sets forth the number of shares of common stock of
the Company beneficially owned by each of the directors and nominees for
election to the Board of Directors, by each named executive officer, and by all
directors and officers as a group as of March 1, 1998 and the percentage that
these shares bear to the total common stock outstanding on that date.
 
<TABLE>
<CAPTION>
                                                               AMOUNT OF SHARES          PERCENT OF
                  NAME OF BENEFICIAL OWNER                   BENEFICIALLY OWNED(1)         CLASS
                  ------------------------                   ---------------------       ----------
    <S>                                                      <C>                         <C>
    Milton R. Brown......................................    21,002(3)                      *
    Carl J. Dargene......................................    266,337(2)(3)(4)(5)            *
    Richard C. Dell......................................    7,802(3)                       *
    Robert A. Doyle......................................    48,017(2)(3)                   *
    Kenneth E. Edge......................................    70,407(3)(4)(5)                *
    Charles E. Gagnier...................................    129,250(2)(3)(4)(5)            *
    Lawrence E. Gloyd....................................    26,984(3)(6)                   *
    John A. Halbrook.....................................    3,929(3)                       *
    Frederick D. Hay.....................................    1,569                          *
    William R. McManaman.................................    2,049                          *
    Robert J. Meuleman...................................    242,755(2)(3)(4)               *
    Ted Ross.............................................    33,349(3)(6)                   *
    Robert J. Smuland....................................    28,976(3)                      *
    James S. Waddell.....................................    96,991(3)(4)(5)                *
    Jack D. Ward.........................................    8,590(3)                       *
    James F. Warsaw......................................    60,867(3)(4)                   *
    Gary L. Watson.......................................    18,205(3)(6)                   *
    All executive officers and directors (21 persons)....    1,255,249(2)(3)(4)(5)(6)       4.63%
</TABLE>
 
- ---------------
 *  The amount shown is less than 1% of the outstanding shares of such class.
 
(1) The information contained in this column is based upon information furnished
    to the Company by the persons named above or obtained from records of the
    Company. The nature of beneficial ownership for shares shown in this column
    is sole voting and investment power unless otherwise indicated herein.
 
(2) Includes shares held individually by certain family members of the directors
    and officers as follows: Carl J. Dargene--22,870 shares, Robert A.
    Doyle--5,197 shares, Charles E. Gagnier--1,986 shares, Robert J.
    Meuleman--23,911 shares, and all executive officers and directors--53,964
    shares.
 
(3) Includes shares which such person has a right to acquire within sixty days
    through the exercise of stock options as follows: Milton R. Brown--4,500
    shares, Carl J. Dargene--144,698 shares, Richard C. Dell--
 
                                        4
<PAGE>   6
 
    3,000 shares, Robert A. Doyle--4,500 shares, Kenneth E. Edge--48,750 shares,
    Charles E. Gagnier--104,317 shares, Lawrence E. Gloyd--4,500 shares, John A.
    Halbrook--1,500 shares, Robert J. Meuleman--162,031 shares, Ted Ross--4,500
    shares, Robert J. Smuland--4,500 shares, James S. Waddell--60,000 shares,
    Jack D. Ward--3,000 shares, James F. Warsaw--48,570 shares, Gary L.
    Watson--4,500 shares and all executive officers and directors--760,177
    shares.
 
(4) Includes shares held in trust with power to vote but without investment
    authority as follows: Carl J. Dargene--9,466 shares, Kenneth E. Edge--6,805
    shares, Charles E. Gagnier--5,228 shares, Robert J. Meuleman--10,078 shares,
    James S. Waddell--1,464 shares, James F. Warsaw--1,197 shares, and all
    executive officers and directors--45,931 shares.
 
(5) Includes shares held in joint tenancy with the spouses of certain of the
    directors and executive officers as to which voting and investment power is
    shared as follows: Carl J. Dargene--1,732 shares, Kenneth E. Edge--1,943
    shares, Charles E. Gagnier--6,936 shares, James S. Waddell--4,500 shares,
    and all executive officers and directors--32,281 shares.
 
(6) Includes shares held in trusts of which such persons are trustees having
    sole voting and investment power as follows: Lawrence E. Gloyd--6,924
    shares, Ted Ross--4,500 shares, Gary L. Watson--703 shares and all executive
    officers and directors--12,127 shares.
 
     Pursuant to Section 16 of the Exchange Act, the Company's officers,
directors and holders of more than ten percent of the Company's Capital Stock
are required to file reports of their trading in equity securities of the
Company with the Commission, the Company and the NASDAQ Stock Market. Based
solely on its review of the copies of such reports received by it, or written
representations from certain reporting persons that no reports on Form 5 were
required for those persons, the Company believes that during 1997 all filing
requirements applicable to its officers, directors and more than ten percent
shareholders were complied with.
 
BENEFICIAL OWNERSHIP BY CERTAIN PERSONS
 
     The following table lists the beneficial ownership of the Company's common
stock with respect to all persons, other than those listed above, known to the
Company as of March 1, 1998 to be the beneficial owner of more than five percent
of such common stock.
 
<TABLE>
<CAPTION>
                      NAME AND ADDRESS                         AMOUNT AND NATURE OF    PERCENT
                    OF BENEFICIAL OWNER                       BENEFICIAL INTEREST(1)   OF CLASS
                    -------------------                       ----------------------   --------
<S>                                                           <C>                      <C>
AMCORE Investment Group, N.A................................     2,574,298(2)(3)         9.49%
501 Seventh Street, Rockford, IL 61104
Roger Reno..................................................        1,594,032(4)         5.88%
2515 Chickadee Trail, Rockford, IL 61107
</TABLE>
 
- ---------------
(1) The information contained in this column is based upon information furnished
    to the Company by the persons named above or obtained from records of the
    Company.
 
(2) Includes 2,574,298 shares held by nominees acting on behalf of AMCORE
    Investment Group, N.A. Excludes 1,501,485 shares held as trustee of various
    trusts over which AMCORE Investment Group, N.A. has neither voting nor
    investment power, and as to which beneficial ownership is disclaimed on
    these shares. The nature of beneficial ownership for the shares shown in
    this column is as follows: sole voting power--2,546,958 shares, shared
    voting power--3,935 shares, no voting power--23,405 shares, sole investment
    power--2,100,902 shares, shared investment power--432,030 shares and no
    investment power--41,366 shares.
 
(3) Although there is no affirmative duty or obligation to do so, it is the
    general practice of AMCORE Investment Group, N.A. to solicit the direction
    of trust beneficiaries or grantors with regard to the voting of shares held
    in trust on all issues which are subject to vote by proxy. The shares are
    then voted as directed by the trust beneficiary or grantor.
 
(4) Includes 155,925 shares held in trusts for which trustee has sole voting and
    investment power, 2,007 shares held in trust with power to vote but without
    investment authority and 150,837 shares held individually by certain family
    members.
 
                                        5
<PAGE>   7
 
                             EXECUTIVE COMPENSATION
 
SUMMARY COMPENSATION TABLE
 
     The following table sets forth certain information regarding compensation
earned during each of the Company's last three fiscal years by the Company's
chief executive officer and each of the Company's four other most highly
compensated executive officers based on salary and bonus earned during the year
ended December 31, 1997:
 
<TABLE>
<CAPTION>
                                                                                                LONG TERM
                                                                                               COMPENSATION
                                                                                        --------------------------
                                                 ANNUAL COMPENSATION                      AWARDS         PAYOUTS          OTHER
                                   -----------------------------------------------      ----------      ----------      ---------
                                                                           OTHER
                                                                          ANNUAL        SECURITIES                      ALL OTHER
      NAME AND PRINCIPAL                                                  COMPEN-       UNDERLYING         LTIP          COMPEN-
           POSITION                YEAR    SALARY(1)    BONUS(1)(2)      SATION(3)       OPTIONS        PAYOUTS(4)      SATION(5)
      ------------------           ----    ---------    -----------      ---------      ----------      ----------      ---------
<S>                                <C>     <C>          <C>              <C>            <C>             <C>             <C>
Robert J. Meuleman.............    1997    $320,000      $ 17,336          $9,182         60,000         $ 35,608       $334,691
  President & Chief                1996     275,000       143,340           7,101         25,500          105,466        400,173
  Executive Officer                1995     250,000        42,044           7,091         19,500           86,740         48,679
Charles E. Gagnier.............    1997     181,100        43,730             618         10,500           12,341         39,441
  Executive Vice President         1996     181,100        58,492           2,116         13,500           50,323         40,024
  Bank Mergers & Acquisitions      1995     171,600        21,937           5,928         12,000           43,615         29,966
  Chairman of the Board of
  AMCORE Bank N.A., Rockford
James S. Waddell...............    1997     200,000        22,580             785         15,000           17,986         80,706
  Executive Vice President &       1996     170,000        65,896           1,211         18,000           43,933         88,461
  Chief Administrative Officer     1995     159,000        35,015           6,136         12,000            7,320         19,031
Kenneth E. Edge................    1997     180,000        24,447             254         15,000            6,820         68,759
  Executive Vice President &       1996     135,000        39,691             653         13,500            2,938         23,810
  Chief Operating Officer          1995     117,500         9,431           2,459          6,750               --         11,639
James F. Warsaw................    1997     160,000        31,432             163         10,500            3,699         20,048
  President & Chief Executive      1996     139,867        44,783             472         10,500               --         21,042
  Officer, AMCORE Bank N.A.,       1995     125,717         9,648           1,002          6,750               --         11,918
  Rockford
</TABLE>
 
- ---------------
(1) Compensation deferred pursuant to the Company's deferred compensation plan
    is included in Salary and Bonus totals.
 
(2) Reflects bonus earned during the year which was paid during the following
    year.
 
(3) These amounts represent reimbursements during the year for taxes.
 
(4) Reflects long term incentive plan payouts earned during the year and
    dividend equivalent payments made on all outstanding Performance Units.
 
(5) Amounts shown for 1997 consist of the following:
 
<TABLE>
<CAPTION>
                                                  MEULEMAN    GAGNIER    WADDELL     EDGE      WARSAW
                                                  --------    -------    -------     ----      ------
    <S>                                           <C>         <C>        <C>        <C>        <C>
    Value of life insurance premiums..........    $255,425    $    --    $44,577    $45,769    $    --
    Imputed income-group term life
      insurance...............................      7,399       4,422      3,302      1,759        934
    Above market interest on deferred
      compensation............................      6,792       5,385        810         --        235
    AMCORE Financial Security Plan............     12,400      12,400     12,400     12,400     12,400
    Company's contributions to Supplemental
      Retirement Plan.........................     52,675      17,234     19,617      8,831      6,479
                                                  --------    -------    -------    -------    -------
      Total other compensation................    $334,691    $39,441    $80,706    $68,759    $20,048
                                                  ========    =======    =======    =======    =======
</TABLE>
 
     The value of life insurance premiums for Messrs. Meuleman, Waddell and Edge
     include the value of premiums advanced by the Company under a split-dollar
     life insurance agreement with the Company. For further discussion of these
     agreements, see "Employee Agreements" on page eight. Prior year reported
     amounts include contributions to the security plan, supplemental retirement
     plan, above market interest on deferred compensation and group term life
     imputed income.
                                        6
<PAGE>   8
 
OPTION GRANTS
 
     The following table provides information related to options granted to the
named executive officers during 1997.
 
<TABLE>
<CAPTION>
                                              INDIVIDUAL GRANTS                         POTENTIAL NET REALIZABLE
                         -----------------------------------------------------------        VALUE AT ASSUMED
                           NUMBER OF                                                     ANNUAL RATES OF STOCK
                          SECURITIES       PERCENT OF                                    PRICE APPRECIATION FOR
                          UNDERLYING      TOTAL OPTIONS     EXERCISE                         OPTION TERM(1)
                            OPTIONS        GRANTED TO       PRICE PER     EXPIRATION    ------------------------
        NAME             GRANTED(2)(3)      EMPLOYEES      SHARE(2)(3)       DATE          5%            10%
        ----             -------------    -------------    -----------    ----------       --            ---
<S>                      <C>              <C>              <C>            <C>           <C>          <C>
Robert J. Meuleman...       60,000            20.9%          $18.50        5/21/07      $698,073     $1,769,054
Charles E. Gagnier...       10,500             3.7            18.50        5/21/07       122,163        309,584
James S. Waddell.....       15,000             5.2            18.50        5/21/07       174,518        442,264
Kenneth E. Edge......       15,000             5.2            18.50        5/21/07       174,518        442,264
James F. Warsaw......       10,500             3.7            18.50        5/21/07       122,163        309,584
</TABLE>
 
- ---------------
(1) Values are reported net of the option exercise price, but before taxes
    associated with exercise. These amounts represent certain assumed rates of
    appreciation only. Actual gains, if any, on stock option exercises are
    dependent on the future performance of the Common Stock, overall stock
    conditions and the optionholders' continued employment.
 
(2) Reflects options granted on May 21, 1997 to acquire shares of Common Stock
    pursuant to the 1995 Stock Incentive Plan.
 
(3) Options granted pursuant to the 1995 Stock Incentive Plan have an exercise
    price of not less than 100% of the fair market value of the Common Stock on
    the date of the grant. Options generally become exercisable in their
    entirety six months following the date of grant and remain exercisable for
    ten years after the date of the grant unless the optionee ceases to be an
    employee of the Company or its subsidiaries. The option exercise price may
    be paid in cash, shares of Common Stock having a fair market value equal to
    the exercise price, stock withholding or any combination of the above.
 
OPTION EXERCISES AND YEAR-END HOLDINGS
 
     The following table sets forth information with respect to the named
executives concerning the exercise of options during the last year and
unexercised options held as of December 31, 1997.
 
<TABLE>
<CAPTION>
                                                                                NUMBER OF
                                                                               SECURITIES       VALUE OF
                                                                               UNDERLYING     UNEXERCISED
                                                                               UNEXERCISED    IN-THE-MONEY
                                                     NUMBER OF                 OPTIONS AT      OPTIONS AT
                                                      SHARES                   YEAR END(1)    YEAR END(2)
                                                    ACQUIRED ON     VALUE      -----------    ------------
                      NAME                           EXERCISE      REALIZED    EXERCISABLE    EXERCISABLE
                      ----                          -----------    --------    -----------    -----------
<S>                                                 <C>            <C>         <C>            <C>
Robert J. Meuleman..............................          --             --      162,031       $1,807,387
Charles E. Gagnier..............................       9,653       $122,799      104,317        1,510,607
James S. Waddell................................          --             --       60,000          641,999
Kenneth E. Edge.................................       5,408         69,702       48,750          523,112
James F. Warsaw.................................    --......             --       48,570          567,824
</TABLE>
 
- ---------------
(1) Options granted to acquire shares of Common Stock pursuant to various stock
    incentive plans.
 
(2) The amounts shown reflect the value of unexercised options calculated by
    determining the difference between the closing price of the Company's Common
    Stock on the last day of the year ($25.125) and the applicable exercise
    price of such options.
 
                                        7
<PAGE>   9
 
LONG-TERM INCENTIVE PLAN AWARDS TABLE
 
     The following table sets forth information with respect to the named
executives concerning Performance Unit Awards granted during 1997 pursuant to
the Company's 1995 Stock Incentive Plan.
 
<TABLE>
<CAPTION>
                                                                            ESTIMATED FUTURE PAYOUTS UNDER
                                                                             NON-STOCK PRICE-BASED PLANS
                                            NUMBER OF                    ------------------------------------
                                           PERFORMANCE    PERFORMANCE    THRESHOLD     TARGET     OUTSTANDING
                 NAME                       UNITS(1)        PERIOD          13%         14%           15%
                 ----                      -----------    -----------    ---------     ------     -----------
<S>                                        <C>            <C>            <C>          <C>         <C>
Robert J. Meuleman.....................      32,160         3 years      $143,112     $214,507     $357,298
Charles E. Gagnier.....................       9,236         3 years        41,100       61,604      102,612
James S. Waddell.......................      15,000         3 years        66,750      100,050      166,650
Kenneth E. Edge........................       8,160         3 years        36,312       54,427       90,658
James F. Warsaw........................       8,160         3 years        36,312       54,427       90,658
</TABLE>
 
- ---------------
(1) Performance units were granted to certain executive officers on January 2,
    1997 pursuant to the 1995 Stock Incentive Plan. The holders of these
    performance units will be entitled to cash or stock payments, or a
    combination thereof, if certain performance targets are met during the three
    year period ending December 31, 1999. The holders are also entitled to
    dividend equivalent payments on these Performance Units. The target levels
    applicable to the Performance Units as shown in the table above are achieved
    if the average consolidated return on stockholders' equity (ROE) for the
    performance period is as shown above for each of the performance levels.
    Each Performance Unit shall be of no value unless at least the minimum level
    is achieved. If the Company achieves an average ROE in excess of the minimum
    performance level set forth above, each Performance Unit shall have the
    following values: $4.45 per unit for threshold performance, $6.67 per unit
    for target performance and $11.11 per unit for outstanding performance. It
    is the Company's intention to make incremental payments to executive
    officers for performance levels which are between these specified target
    levels.
 
EMPLOYEE AGREEMENTS
 
     On March 1, 1996, the Company entered into individual Executive Insurance
Agreements (each an "Agreement" and collectively the "Agreements") with the
following executives: Robert J. Meuleman and James S. Waddell. On May 21, 1997
the Company entered into an individual Executive Insurance Agreement with
Kenneth E. Edge. The Company purchased split-dollar life insurance policies for
the named executives pursuant to each Agreement. The Company may terminate any
such Agreement and receive its interest in the life insurance policy under
certain conditions, including termination of employment (other than due to
death, disability or retirement, unless such terminated employee becomes
affiliated with a competitor following any such termination due to disability or
retirement), provided the Company may not terminate any of the Agreements if
such termination of employment or affiliation occurs after a "change in control"
of the Company.
 
     The Company has entered into individual Transitional Compensation
Agreements with current executive officers and certain other key employees,
including Messrs. Robert J. Meuleman, James S. Waddell, Kenneth E. Edge, and one
other executive. If, during the three-year period following a change of control
of the Company (as defined in the agreements), the executive officer's
employment is ended through (1) termination by the Company without cause (as
defined in the agreements) or (2) termination by the executive officer for good
reason (as defined in the agreements) based upon a breach of the agreement by
the Company or a significant adverse change in the executive officer's
responsibilities, compensation or benefits, then a termination payment will be
made to the executive. The agreements provide that such payment will equal three
times the sum of the executive's then current annual salary and annual bonus. In
addition, Mr. Meuleman's agreement provides that, if any portion of the
termination payment is subject to an excise tax as an excess parachute payment,
as defined in the Internal Revenue Code Section 4999, the Company shall pay the
executive the amount necessary to offset the excise tax and any applicable taxes
on this additional payment. The agreements, other than Mr. Meuleman's, provide
that the total severance benefits are limited to the amount that can be received
without incurring any excise tax under the Internal Revenue Code
                                        8
<PAGE>   10
 
Section 4999. Additional provisions provide for the continuation, for three
years after termination, of welfare and other benefits to the executive and his
family unless termination is for cause. Upon a change of control of the Company,
the executive is entitled to a lump sum cash payment equivalent to the present
value of the projected benefits under certain supplemental retirement plans.
 
     The Company also entered into Transitional Compensation Agreements with
Charles E. Gagnier, James F. Warsaw and three other executive officers. These
agreements provide that if such executive's employment is terminated within one
year after a change in control of the Company either (i) by the Company other
than for "cause" or other than as a consequence of disability or retirement (all
as defined in such agreements) or (ii) by such executive for reasons relating to
a diminution of responsibilities, compensation or benefits or relocation
requiring a change in residence or a significant increase in travel, he will
receive: (a) lump sum payment equal to his monthly salary in effect at the date
of termination for a period of time determined pursuant to each agreement based
upon his salary, years of service and age at the time of his termination, and a
prorata portion of his annual bonus; (b) life, disability, accident and health
insurance as provided in the Company's insurance programs for a period of 24
months after termination of employment; and (c) certain perquisites and
outplacement services. The agreements provide for a commensurate reduction in
the amount of cash payments to be made to an executive under the agreement in
the event that (i) the payments fail to be deductible by the Company as a result
of Section 280G of the Internal Revenue Code of 1986, as amended or (ii) such
executive procures new employment during the period he is receiving severance
payments under the agreement. If these severance agreements had become operative
in December 1997, the maximum number of monthly payments payable to the
following individuals (subject to reduction as described in the previous
sentence) would have been approximately: Charles E. Gagnier, 48 months and James
F. Warsaw, 20 months.
 
     The Company provides a supplemental retirement plan (entitled "AMCORE
Non-Qualified Retirement Plan") for senior executive officers to maintain
certain levels of retirement benefits and maximize the effectiveness and
flexibility of compensation arrangements for participants in the AMCORE
Financial Security Plan (Security Plan). This is accomplished by crediting each
participating executive with contributions that would be made to the Security
Plan, but for certain limitations imposed by the Internal Revenue Code.
 
     In August 1997, the Company adopted a Transitional Compensation policy
(Policy) to provide severance pay for substantially all of the Company's
employees whose employment is terminated within one year following a change in
control (as defined in the Policy). The Policy provides for semi-monthly
payments, depending on employment status, equal to such employee's current
weekly or monthly salary for a period of time determined pursuant to the Policy
based upon his or her salary, years of service and age.
 
COMPENSATION COMMITTEE INTERLOCKS AND INSIDER PARTICIPATION
 
     Carl J. Dargene serves as an ex-officio member of the Compensation
Committee and is the Company's Chairman of the Board. Mr. Dargene also serves on
the board of CLARCOR and its Compensation Committee. Lawrence E. Gloyd, Chairman
and Chief Executive Officer of CLARCOR, also serves on the Company's
Compensation Committee. Mr. Dargene also serves on the board of Woodward
Governor Company and its Compensation Committee. Lawrence E. Gloyd, Director of
the Company, also serves on the board of Woodward Governor Company and its
Compensation Committee. John A. Halbrook, Chairman and Chief Executive Officer
of Woodward Governor Company, also serves as a Director of the Company.
 
REPORT OF THE COMPENSATION COMMITTEE
 
     The Compensation Committee of the Board of Directors reviews the Company's
compensation and benefit policies, including individual salaries of the
executive officers, and submits recommendations to the Board of Directors.
 
     The Company engages an internationally recognized compensation consulting
firm on a regular basis to assist the Compensation Committee and the Board of
Directors in formulating compensation policies and
 
                                        9
<PAGE>   11
 
determining appropriate compensation levels. This firm provides reports directly
to the Compensation Committee.
 
     Compensation received is one measure of the accomplishments and potential
of the employee, relative to peers. AMCORE believes that base compensation
should be competitive in the marketplace, but that incentive opportunities
should increase the amount of compensation available to key personnel. Incentive
opportunities should be tied to both quantitative and qualitative objectives
designed to enhance both short and long term shareholder value.
 
     Toward that end, it is the philosophy of management, supported by the
Compensation Committee, that senior management base pay should be at or near the
median for similar positions in the industry and that incentives for meeting
objectives should provide the opportunity for total compensation to reach the
75th percentile and beyond based on performance relative to industry and peer
applicable comparisons.
 
     AMCORE believes that incentives should not be disincentives. In the short
term, they should be achievable, but challenging, goals. When these goals are
achieved, they will increase compensation and set the basis for higher standards
as the next step.
 
Executive Officer Compensation
 
     Consistent with this philosophy, the Compensation Committee has established
a compensation program consisting of an annual base salary and the opportunity
to earn incentive compensation tied directly to the performance of the Company,
personal performance and increases in stockholder value. The Company's executive
compensation program in 1997 consisted of the following components:
 
     - Base Salary
 
     - Short-Term Incentive Plan
 
     - Intermediate-Term Incentive Plan
 
     - Long-Term Incentive Plan
 
     The Compensation Committee, working with the compensation consulting firm,
determines a range for the executive officers' base salaries in order to be
competitive and consistent with amounts paid to executives performing similar
functions in comparable companies. The objective is to determine the salary
ranges at a level within the third quartile of trailing twelve month activity of
the comparable companies. The amount of each executive's base salary is set
within the range based upon the performance of the Company, performance of
particular business units, the personal performance of such executive officers,
cost of living increases and such other factors as the Compensation Committee
and the Board of Directors deem appropriate.
 
     The short-term incentive component of each executive officer's compensation
is based upon participation in the Company's profit sharing plan, generally
available to all of the Company's employees, and a cash bonus, based upon a
maximum target amount assigned at the beginning of each year. Amounts payable
under the Company's profit sharing plan range between 0% and 6% of the executive
officer's total cash compensation, and are based upon the profitability of the
Company. The annual cash bonus targets range from 30% to 50% of the midpoint of
the base salaries of executive officers. The amount of targeted cash bonuses
payable to such officers are contingent upon the attainment of financial targets
such as consolidated or affiliate earnings which are established at the
beginning of the year, personal performance of the executive and, where
appropriate, attainment of earnings goals of the operating unit or units for
which the executive has responsibility. The targets may be adjusted from time to
time to take into account unforeseen or extraordinary events. Generally, if
certain minimum target financial results are not achieved, no annual incentive
will be paid.
 
     Generally, 10% of a targeted cash bonus will be paid upon the achievement
of at least 90% of such goals and will increase to 100% of such targeted cash
bonus upon the achievement of 110% or more of such goals (which include
objectives that are, in the judgment of the Compensation Committee, difficult to
attain). In 1997, the total short-term incentive payouts to executive officers
were approximately 35% of the maximum targets established under the plan.
 
                                       10
<PAGE>   12
 
     The intermediate-term incentive component of each executive officer's
compensation is based upon the award of performance units which provide for cash
or stock payouts, or a combination thereof, based upon the achievement by the
Company of targeted average consolidated returns on stockholders' equity over a
three year performance period. The holders are also entitled to dividend
equivalent payments on these performance units. The three target levels
applicable to the performance units granted are: Threshold 13% ROE, Target 14%
ROE and Outstanding 15% ROE. Each performance unit shall be of no value unless
at least the minimum performance level is achieved. If the Company achieves an
average ROE in excess of the minimum performance level set forth above, each
performance unit shall have the following values: $4.45 per unit for Threshold
performance, $6.67 per unit for Target performance and $11.11 per unit for
Outstanding performance. The minimum targeted average returns on equity of 13%
was not attained for the 1995 performance units expiring December 1997.
Therefore, no payouts were made pursuant to these units.
 
     The long-term incentive component of each executive officer's compensation
involves the award of stock options or stock awards pursuant to the AMCORE
Long-Term Incentive Plan and 1992 and 1995 Stock Incentive Plans. Long-term
incentives are provided to reward executives for achieving long-term strategic
goals and to provide a balance against overemphasis on short-term results.
Through stock ownership, executives' long-term incentives are tied to
stockholder value. The Compensation Committee recommends grants of annual awards
of stock options to executive officers at levels determined with reference to
fixed percentages up to 35% of base compensation subject to increases and
decreases based on individual performance.
 
Chief Executive Officer Compensation
 
     The compensation package for Mr. Robert J. Meuleman, who was the Chief
Executive Officer of the Company during 1997, was determined in the same manner
as for all other executive officers, except that Mr. Meuleman's short-term
incentive was based 100% on the Company's total performance without reference to
any particular business unit of the Company or personal objectives. For this
purpose, Company performance was measured by comparing the consolidated earnings
of the Company to earnings goals established by the Compensation Committee.
 
     Mr. Meuleman's base salary in 1997 was $320,000, which was in the lower
second quartile of his salary range, and his short-term bonus was $17,336, a
payout of 10% of the maximum, for a combined total of $337,336. During 1996, Mr.
Meuleman earned a base salary of $275,000 and short-term bonus of $143,340, for
a total of $418,340.
 
     The Compensation Committee believes that the executive team of the Company
will receive appropriate rewards under this program of corporate incentives, but
only if they achieve the performance goals established for them and the Company
and if they succeed in increasing stockholder value.
 
                                          Richard C. Dell
                                          Lawrence E. Gloyd
                                          Frederick D. Hay
                                          Robert J. Smuland
                                          Carl J. Dargene, Ex-officio member
                                          Robert J. Meuleman, Ex-officio member
 
                                       11
<PAGE>   13
 
                              COMPANY PERFORMANCE
 
     The graph below compares the cumulative total shareholder return on the
Common Stock of the Company for the last five years with the cumulative total
returns on the NASDAQ Stock Market Index and NASDAQ Bank Stocks Peer Index.
Cumulative total returns have been measured by dividing the sum of the
cumulative amount of dividends for the measurement period, assuming dividend
reinvestment, and the difference between the share price at the end and the
beginning of the measurement period by the share price at the beginning of the
measurement period.
 
                COMPARISON OF FIVE YEAR CUMULATIVE TOTAL RETURN
  (AMCORE FINANCIAL, INC., NASDAQ STOCK MARKET INDEX, NASDAQ BANK STOCK INDEX)
 

<TABLE>
<CAPTION>

NASDAQ BANK STOCK (PEER INDEX)


          1992           1993        1994        1995        1996        1997
     ------------------------------------------------------------------------
<S>       <C>         <C>         <C>         <C>         <C>         <C>
JAN                   103.885     115.915     117.447     169.593     235.843
FEB                   106.341     114.458     123.190     171.922     249.127
MAR                   110.647     112.662     124.405     175.863     240.130
APR                   106.135     116.305     127.853     174.956     245.531
MAY                   103.988     121.608     131.749     177.893     260.877
JUN                   106.932     121.613     137.351     178.770     279.447
JUL                   110.750     123.301     143.822     176.573     300.882
AUG                   113.699     126.452     151.541     188.803     298.427
SEP                   116.889     122.961     155.039     197.846     329.561
OCT                   115.181     119.267     157.561     206.606     331.202
NOV                   110.566     114.288     165.642     222.049     344.562
DEC       100.000     114.042     113.627     169.222     223.412     377.438

AVERAG    100.000     109.921     118.538     142.069     188.691     291.086

AMCORE FINANCIAL, INC. (COMPANY INDEX)

          1992           1993        1994        1995        1996        1997
     ------------------------------------------------------------------------
<S>       <C>         <C>         <C>         <C>         <C>         <C>
JAN                   122.093     143.478     140.418     159.823     187.341
FEB                   115.868     128.266     150.778     165.531     196.169
MAR                   112.357     117.427     143.333     160.068     223.076
APR                   105.335     148.139     143.333     153.359     211.231
MAY                    99.019     154.601     131.388     154.317     225.059
JUN                   106.092     154.601     138.896     152.653     216.387
JUL                   116.701     147.326     150.158     148.789     230.284
AUG                   118.773     161.877     153.912     154.586     236.239
SEP                   115.210     155.693     171.983     159.710     272.599
OCT                   130.651     142.871     170.093     161.658     281.586
NOV                   132.717     129.332     168.385     173.344     284.582
DEC       100.000     138.995     138.570     154.115     209.901     302.521

AVERAG    100.000     117.818     143.515     151.399     162.399     238.922


NASDAQ STOCK MARKET (MARKET INDEX)

          1992           1993        1994        1995        1996        1997
     ------------------------------------------------------------------------
<S>       <C>         <C>         <C>         <C>         <C>         <C>
JAN                   102.847     118.281     112.843     159.482     209.064
FEB                    99.010     117.177     118.811     165.552     197.505
MAR                   101.876     109.971     122.334     166.101     184.612
APR                    97.528     108.544     126.186     179.882     190.384
MAY                   103.354     108.809     129.442     188.141     211.969
JUN                   103.832     104.830     139.932     179.660     218.452
JUL                   103.954     106.980     150.218     163.658     241.510
AUG                   109.327     113.800     153.262     172.828     241.142
SEP                   112.583     113.509     156.787     186.048     255.404
OCT                   115.114     115.740     155.888     183.993     242.129
NOV                   111.682     111.900     159.549     195.367     243.326
DEC       100.000     114.796     112.214     158.699     195.192     239.527

AVERAG    100.000     106.325     111.813     140.329     177.992     222.919
</TABLE>
 
NOTES:
 
     A. The lines represent monthly index levels derived from compounded daily
        returns that include all dividends.
 
     B. The index level for all series was set to 100.0 as of December 31, 1992.

                                      
                                      12
<PAGE>   14
 
                          TRANSACTIONS WITH MANAGEMENT
 
     Directors and principal officers of the Company and their associates were
customers of, and had transactions with, the Company's subsidiaries in the
ordinary course of business during 1997. Comparable transactions may be expected
to take place in the future. All outstanding loans, commitments to loan,
transactions in repurchase agreements and certificates of deposit, and
depository relationships in the ordinary course of business, were on
substantially the same terms, including interest rates and collateral, as those
prevailing at the time for transactions with other persons, and, in the opinion
of management of the Company, did not involve more than the normal risk of
collectibility or present other unfavorable features. As of December 31, 1997,
various directors and officers of the Company were indebted to the Company's
subsidiaries in the amount of approximately $2,912,000. This amount represents
0.15 percent of the Company's subsidiaries' outstanding loans and 1.01 percent
of the Company's stockholders' equity as of that date. The maximum aggregate
amount of their indebtedness to the Company's subsidiaries during 1997 was
$3,536,000. As of December 31, 1997, associates of directors and officers of the
Company were not indebted to the Company's subsidiaries. Further, the Company's
subsidiaries have additional committed, but unfunded, lines of credit of
$9,819,000 to associates of directors and officers of the Company. The maximum
aggregate amount of such associates' indebtedness to the Company's subsidiaries
during 1997 was $2,903,000.
 
     The Board of Directors, on February 22, 1984, authorized the Executive
Committee to negotiate such agreements as may be necessary to accomplish stock
redemptions pursuant to Section 303 of the Internal Revenue Code to pay death
taxes of certain stockholders. Such redemptions will be conditioned upon any
requisite bank regulatory agency or debt covenant approvals. Bank holding
companies, such as the Company, are required to notify the Federal Reserve Board
prior to paying 10% or more of consolidated net worth to redeem shares over a
twelve-month period.
 
                  ITEM 2--APPOINTMENT OF INDEPENDENT AUDITORS
 
     McGladrey & Pullen, LLP have been appointed to serve as the independent
auditors for the Company and subsidiaries for the fiscal year ending December
31, 1998. This appointment is being submitted to the stockholders for
ratification. Representatives of the firm are expected to be present at the
Annual Meeting to respond to appropriate questions from stockholders and to have
the opportunity to make any statements they consider appropriate. In the event
the stockholders do not ratify the appointment of McGladrey & Pullen, LLP, the
selection of independent auditors will be determined by the Audit Committee and
the Board of Directors after careful consideration of all information submitted
by the stockholders.
 
     Accounting services rendered by McGladrey & Pullen, LLP during 1997
included the examination of the annual consolidated financial statements, review
of unaudited quarterly statements, assistance with Securities and Exchange
Commission filings, legally required special audits of subsidiaries, and
consultations in connection with various tax and accounting-related matters.
 
     During 1997, the Board of Directors reviewed and approved in advance or
ratified the scope of all of McGladrey & Pullen, LLP's professional services
rendered to the Company and related entities.
 
     THE BOARD OF DIRECTORS UNANIMOUSLY RECOMMENDS A VOTE FOR RATIFICATION OF
MCGLADREY & PULLEN, LLP AS AUDITORS FOR THE YEAR 1998.
 
                                       13
<PAGE>   15
 
               STOCKHOLDER PROPOSALS FOR THE 1997 ANNUAL MEETING
 
NOMINATIONS FOR THE BOARD OF DIRECTORS
 
     The Company's Bylaws provide that the notice of proposed stockholder
nominations for the election of directors must be timely and given to the
Secretary of the Company prior to the meeting at which directors are to be
elected. To be timely, notice must be received by the Company not less than 50
days nor more than 75 days prior to the meeting. The date of an annual meeting
of stockholders may be obtained from the Secretary of the Company when
determined by the Board of Directors.
 
     Notice to the Company from a stockholder who proposes to nominate a person
at the meeting for election as a director must contain certain information about
that person, including age, business and residence addresses and principal
occupation, the class and number of shares of the Company's stock beneficially
owned and such other information as would be required to be included in a proxy
statement soliciting proxies to nominate that person. The Company may also
require any proposed nominee to furnish other information reasonably required by
the Company to determine the proposed nominee's eligibility to serve as
director. If the chairman of the meeting of stockholders determines that a
person was not nominated in accordance with the foregoing procedures, such
person shall not be eligible for election as a director.
 
OTHER PROPOSALS
 
     Stockholders may submit proposals appropriate for stockholder action at the
Company's Annual Meeting consistent with the regulations of the Securities and
Exchange Commission. For proposals to be considered for inclusion in the Proxy
Statement for the 1998 Annual Meeting, they must be received by the Company no
later than November 30, 1998. Such proposals should be directed to AMCORE
Financial, Inc., Attention: Corporate Secretary, 501 Seventh Street, Rockford,
Illinois 61104.
 
                                           By order of the Board of Directors,
 
                                          James S. Waddell
                                                     James S. Waddell
                                                        Secretary
 
                                       14
<PAGE>   16

                            AMCORE FINANCIAL, INC.

 PROXY SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS OF AMCORE FINANCIAL, INC.
                    FOR THE ANNUAL MEETING ON MAY 5, 1998

     The undersigned holder of Common Stock of AMCORE Financial, Inc. hereby
appoints Robert J. Meuleman and James S. Waddell or each of them, with full
power of substitution, to act as proxy for and to vote the stock of the
undersigned at the Annual Meeting of Stockholders of AMCORE Financial, Inc. to
be held at Cliffbreakers, 700 West Riverside Blvd., Rockford, Illinois, at 5:30
p.m., Rockford time, on May 5, 1998 or any adjournment thereof.

     In their discretion, the proxies are authorized to vote upon other
business as may properly come before the meeting.  This proxy when properly
executed will be voted in the manner directed herein by the undersigned
stockholder.

IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED FOR PROPOSALS 1 AND 2.












             DETACH BELOW AND RETURN USING THE ENVELOPE PROVIDED

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

                  AMCORE FINANCIAL, INC. 1998 ANNUAL MEETING

1. ELECTION OF DIRECTORS:        1 - TED ROSS         2 - ROBERT J. SMULAND
                                 3 - JACK D. WARD     4 - GARY L. WATSON

   [ ]  FOR all nominees                    [ ] WITHHOLD AUTHORITY
        listed to the left (except              to vote for all nominees
        as specified below).                    listed to the left.

(Instructions: To withhold authority to vote for 
any indicated nominee, write the number(s) of the 
nominee(s) in the box provided to the right.) ------>[________________________]


2. Ratification of the appointment of McGladrey & Pullen, LLP as Independent
   auditors.

   [ ]  FOR             [ ]  AGAINST               [ ] ABSTAIN


Check appropriate box 
Indicate changes below:
Address Change?         [ ]    Name Change? [ ]



Date _______________________________     NO. OF SHARES



[___________________________________]

SIGNATURE(S) IN BOX

Please sign exactly as your name appears hereon.  When shares are held by joint
members, both should sign.  When signing as attorney, executor, administrator,
trustee or guardian, please give full title as such.  If a corporation, please
sign in full corporate name by President or other authorized officer.  If a
partnership, please sign in partnership name by an authorized person.





<PAGE>   1



                               POWER OF ATTORNEY




KNOW ALL MEN BY THESE PRESENTS, that each of the undersigned directors and
officers of AMCORE Financial, Inc., a Nevada corporation, which is about to
file an annual report for the year ended December 31, 1997 pursuant to Section
13 of 15(d) of the Securities Act of 1934 on Form 10-K with the Securities and
Exchange Commission, Washington, D.C., 20549 hereby constitutes and appoints
ROBERT J. MEULEMAN and JOHN R. HECHT, and each of them, his true and lawful
attorney-in-fact and agents with power of substitution and resubstitution, from
them and in their name, place and stead, in any and all capacities, to sign the
Company's Form 10-K and other documents in  connection therewith with the
Securities and Exchange Commission, granting unto the attorneys-in-fact and
agents, and each of them full power and authority to do and perform each and
every act and thing requisite and necessary to be done in and about the
premises, as fully to all intents and purposes as they might or could do in
person, thereby ratifying and confirming all that said attorney-in-fact and
agents or any of them, or their substitutes, may lawfully do or cause to be
done by virtue hereof.

IN WITNESS WHEREOF,  know that the undersigned as a director or officer has
hereunto set their hand as of this ___________________ day of March, 1998.




                                     ______________________________
                                     Signature                     



<TABLE> <S> <C>

<ARTICLE> 9
<MULTIPLIER> 1,000
       
<S>                             <C>
<PERIOD-TYPE>                   YEAR
<FISCAL-YEAR-END>                          DEC-31-1997
<PERIOD-START>                             JAN-01-1997
<PERIOD-END>                               DEC-31-1997
<CASH>                                         105,218
<INT-BEARING-DEPOSITS>                           2,206
<FED-FUNDS-SOLD>                                   633
<TRADING-ASSETS>                                     0
<INVESTMENTS-HELD-FOR-SALE>                  1,441,593
<INVESTMENTS-CARRYING>                          15,423
<INVESTMENTS-MARKET>                            15,611
<LOANS>                                      1,992,543
<ALLOWANCE>                                     19,908
<TOTAL-ASSETS>                               3,667,690
<DEPOSITS>                                   2,527,043
<SHORT-TERM>                                   647,509
<LIABILITIES-OTHER>                             46,537
<LONG-TERM>                                    159,125
                                0
                                          0
<COMMON>                                         6,152
<OTHER-SE>                                     281,324
<TOTAL-LIABILITIES-AND-EQUITY>               3,667,690
<INTEREST-LOAN>                                164,520
<INTEREST-INVEST>                               93,372
<INTEREST-OTHER>                                 3,615
<INTEREST-TOTAL>                               261,507
<INTEREST-DEPOSIT>                             101,075
<INTEREST-EXPENSE>                             148,960
<INTEREST-INCOME-NET>                          112,547
<LOAN-LOSSES>                                    7,045
<SECURITIES-GAINS>                               4,198
<EXPENSE-OTHER>                                115,628
<INCOME-PRETAX>                                 37,582
<INCOME-PRE-EXTRAORDINARY>                      28,664
<EXTRAORDINARY>                                      0
<CHANGES>                                            0
<NET-INCOME>                                    28,664
<EPS-PRIMARY>                                     1.07
<EPS-DILUTED>                                     1.05
<YIELD-ACTUAL>                                    3.64
<LOANS-NON>                                     19,491
<LOANS-PAST>                                     3,386
<LOANS-TROUBLED>                                   377
<LOANS-PROBLEM>                                 13,196
<ALLOWANCE-OPEN>                                19,295
<CHARGE-OFFS>                                    7,777
<RECOVERIES>                                     1,345
<ALLOWANCE-CLOSE>                               19,908
<ALLOWANCE-DOMESTIC>                            13,832
<ALLOWANCE-FOREIGN>                                  0
<ALLOWANCE-UNALLOCATED>                          6,076
<FN>
All information has been restated to reflect the mergers with First National
Bancorp, Inc. on April 18, 1997, Country Bank Shares Corporation on July 16,
1997, and the three-for-two stock split on September 17, 1997. The mergers were
accounted for as a pooling of interests.
</FN>
        

</TABLE>


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